import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import java.util.concurrent.locks.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
import java.math.*;
import x30_pkg.x30_util;
import static x30_pkg.x30_util.VF1;
import static x30_pkg.x30_util.l;
import static x30_pkg.x30_util.fail;
import static x30_pkg.x30_util.indexOf;
import static x30_pkg.x30_util.getOpt;
import static x30_pkg.x30_util.setOpt;
import static x30_pkg.x30_util.callOpt;
import static x30_pkg.x30_util.newWeakHashMap;
import static x30_pkg.x30_util.newDangerousWeakHashMap;
import static x30_pkg.x30_util.get;
import static x30_pkg.x30_util.get_raw;
import static x30_pkg.x30_util.assertTrue;
import static x30_pkg.x30_util.isHeadless;
import static x30_pkg.x30_util.isAndroid;
import static x30_pkg.x30_util.isTrue;
import x30_pkg.x30_util.DynamicObject;
import loadableUtils.utils;
import static loadableUtils.utils._threadInfo;
import static loadableUtils.utils._threadInheritInfo;
import static loadableUtils.utils._threadInfo_addMakerAndRetriever;
import static loadableUtils.utils.dm_currentModule;
import static loadableUtils.utils.dm_current_mandatory;
import static loadableUtils.utils.match;
import static loadableUtils.utils.getOpt_raw;
import static loadableUtils.utils.setOpt_raw;
import static loadableUtils.utils.getField;
import static loadableUtils.utils.fieldType;
import static loadableUtils.utils.format3;
import static loadableUtils.utils.vm_generalIdentityHashSet;
import static loadableUtils.utils.vm_generalHashMap;
import static loadableUtils.utils.vm_generalWeakSubMap;
import static loadableUtils.utils.bindToComponent;
import static loadableUtils.utils.struct;
import static loadableUtils.utils.structure;
import static loadableUtils.utils.loadPage;
import static loadableUtils.utils.loadPage_utf8;
import static loadableUtils.utils.loadPageSilentlyWithTimeout;
import static loadableUtils.utils.loadPageSilently;
import static loadableUtils.utils.loadSnippet;
import static loadableUtils.utils.loadSnippetQuietly;
import static loadableUtils.utils.sendToLocalBot;
import static loadableUtils.utils.sendToLocalBotOpt;
import static loadableUtils.utils.sendToLocalBotQuietly;
import static loadableUtils.utils.componentPopupMenu;
import static loadableUtils.utils.componentPopupMenu_top;
import static loadableUtils.utils.componentPopupMenu_initForComponent;
import static loadableUtils.utils.componentPopupMenu_getEvent;
import static loadableUtils.utils.listPopupMenu;
import static loadableUtils.utils.tablePopupMenu;
import static loadableUtils.utils.tablePopupMenuFirst;
import static loadableUtils.utils.rowSorter_setComparators;
import static loadableUtils.utils.sexyTableWithoutDrag;
import static loadableUtils.utils.dm_current_generic;
import static loadableUtils.utils.dm_current_mandatory_generic;
import static loadableUtils.utils.cset;
import static loadableUtils.utils.DynamicObject_loading;
import static loadableUtils.utils.concepts_unlisted;
import static loadableUtils.utils.makePopupMenuConditional;
import static loadableUtils.utils.makeConceptsTable_idWidth;
import static loadableUtils.utils.showConceptsTable_afterUpdate;
import static loadableUtils.utils.dynamicObjectIsLoading;
import static loadableUtils.utils.rethrow;
import static loadableUtils.utils.hasBot;
import static loadableUtils.utils.concepts_internStringsLongerThan;
import static loadableUtils.utils.concepts_setUnlistedByDefault;
import static loadableUtils.utils.realMC_tl;
import loadableUtils.utils.F0;
import loadableUtils.utils.F1;
import loadableUtils.utils.IF0;
import loadableUtils.utils.IF1;
import loadableUtils.utils.IVF1;
import loadableUtils.utils.IVF2;
import loadableUtils.utils.Matches;
import loadableUtils.utils.BetterLabel;
import loadableUtils.utils.SingleComponentPanel;
import loadableUtils.utils.Snippet;
import loadableUtils.utils.Q;
import loadableUtils.utils.ImageSurface;
import loadableUtils.utils.structure_Data;
import loadableUtils.utils.structure_ClassInfo;
import loadableUtils.utils.RGBImage;
import loadableUtils.utils.RGB;
import loadableUtils.utils.BWImage;
import loadableUtils.utils.MakesBufferedImage;
import loadableUtils.utils.MultiSet;
import loadableUtils.utils.Concept;
import loadableUtils.utils.Concepts;
import loadableUtils.utils.RC;
import loadableUtils.utils.IConceptIndex;
import loadableUtils.utils.IConceptCounter;
import loadableUtils.utils.IFieldIndex;
import loadableUtils.utils.Derefable;
import loadableUtils.utils.ImageSurfaceSelector;
import loadableUtils.utils.SimpleCRUD;
import loadableUtils.utils.PersistableThrowable;
import loadableUtils.utils.DynModule;
import loadableUtils.utils.DynPrintLog;
import loadableUtils.utils.DynObjectTable;
import loadableUtils.utils.DynImageSurface;
import loadableUtils.utils.DynCalculatedList;
import loadableUtils.utils.GlobalID;
import loadableUtils.utils.Rect;
import loadableUtils.utils.Pt;
import loadableUtils.utils.SynchronizedArrayList;
import loadableUtils.utils.SecretValue;
import loadableUtils.utils.HCRUD;
import loadableUtils.utils.HCRUD_Data;
import loadableUtils.utils.HCRUD_Concepts;
import loadableUtils.utils.ValueConverterForField;
import loadableUtils.utils.DefaultValueConverterForField;
import loadableUtils.utils.OrError;
import loadableUtils.utils.HTML;
import java.text.*;
import java.awt.datatransfer.StringSelection;
import java.text.NumberFormat;
import java.nio.charset.Charset;
import java.util.TimeZone;
import java.text.SimpleDateFormat;
import javax.imageio.metadata.*;
import javax.imageio.stream.*;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import javax.swing.undo.UndoManager;
import java.nio.file.Files;
import java.nio.file.Path;
import java.awt.geom.*;

class main {

  static public class BEACalculations {

    public GazelleBEA mod;

    public BEACalculations(GazelleBEA mod) {
      this.mod = mod;
    }

    transient public int liveOutputDelay = 1000;

    transient public double algoTimeout = 30.0;

    public void reactAllInputsWithSomePatterns() {
      for (BEAObject input : mod.beaObjectsOfType("input")) {
        ReactInputWithSomePatterns r = new ReactInputWithSomePatterns();
        r.input = input;
        r.ccOut = db_mainConcepts();
        r.max = 10;
        r.start();
        stepAllWithTimeout(10.0, r);
      }
    }

    public class ReactInputWithSomePatterns implements Steppable {

      public BEAObject input;

      public Concepts ccOut;

      public int max = 3, n;

      public Iterator<BEAObject> patterns;

      public void start() {
        n = countConceptsWhereIC(ccOut, BEAObject.class, "input", input, "type", "match");
        patterns = iterator(sortByConceptID(conceptsWhereIC(BEAObject.class, "type", "Pattern")));
      }

      public boolean step() {
        if (n >= max)
          return false;
        if (!patterns.hasNext())
          return false;
        if (reactInputWithPattern(input, patterns.next(), ccOut) != null)
          ++n;
        return true;
      }
    }

    public Map<String, String> matchInputWithPattern(BEAObject input, BEAObject pattern) {
      String text = getString("text", input);
      return matchInputWithPattern(text, pattern);
    }

    public Map<String, String> matchInputWithPattern(String text, BEAObject pattern) {
      String pat = getString("text", pattern);
      boolean punctuationOnly = isTrue_getOpt("punctuationOnly", pattern);
      if (pattern.typeIs("Syntactic Pattern"))
        return matchInputWithSyntacticPattern(text, pat, punctuationOnly);
      else if (eqic_gen(getOpt("subType", pattern), "PhraseCache"))
        return phraseCache(pat, text) ? litmap() : null;
      else
        return matchInputWithPattern(text, pat, punctuationOnly);
    }

    public Map<String, String> matchInputWithSyntacticPattern(String text, String pat) {
      return matchInputWithSyntacticPattern(text, pat, false);
    }

    public Map<String, String> matchInputWithSyntacticPattern(String text, String pat, boolean punctuationOnly) {
      pat = starsToAngleBracketedNumbers(pat);
      return matchInputWithPattern(text, pat, punctuationOnly);
    }

    public Map<String, String> matchInputWithPattern(String text, String pat) {
      return matchInputWithPattern(text, pat, false);
    }

    public Map<String, String> matchInputWithPattern(String text, String pat, boolean punctuationOnly) {
      Map<String, String> mapping = flexMatchAngleBracketVarsIC_honorPunctuation_first(pat, text);
      if (mapping != null || punctuationOnly)
        return mapping;
      return flexMatchAngleBracketVarsIC_first(pat, text);
    }

    public BEAObject reactInputWithPattern(BEAObject input, BEAObject pattern) {
      return reactInputWithPattern(input, pattern, db_mainConcepts());
    }

    public BEAObject reactInputWithPattern(BEAObject input, BEAObject pattern, Concepts ccOut) {
      if (input == null || pattern == null)
        return null;
      Map<String, String> mapping = matchInputWithPattern(input, pattern);
      if (mapping == null)
        return null;
      return cnew(ccOut, BEAObject.class, "type", "Match", "input", input, "pattern", pattern, "mapping", mapping);
    }

    public Object serveAnalyzeInput(GazelleBEA.Req req) {
      Concepts ccOut = new Concepts();
      BEAObject input = getConcept(BEAObject.class, parseLong(req.get("id")));
      if (input == null)
        input = cnew(ccOut, BEAObject.class, "type", "Input", "text", req.get("q"));
      String text = getString("text", input);
      ReactInputWithSomePatterns r = new ReactInputWithSomePatterns();
      r.input = input;
      r.ccOut = ccOut;
      r.max = 1000;
      r.start();
      stepAllWithTimeout(10.0, r);
      List matches = conceptsWhereIC(ccOut, BEAObject.class, "type", "Match");
      return h1_title("Analyze Input") + p("Input: " + b(htmlEncode(text))) + p(empty(matches) ? "No matches" : "Matches") + ul_htmlEncode(matches);
    }

    public Object serveQueryPage(GazelleBEA.Req req) {
      String q = req.get("q"), algorithm = req.get("algorithm");
      boolean dontRun = eq(req.get("dontRun"), "1");
      boolean liveOutput = eq(req.get("liveOutput"), "1");
      if (liveOutput)
        req.noSpam();
      if (eqic(algorithm, "process input"))
        algorithm = "Process new input v3";
      Map<String, IF0<Algorithm>> algorithms = litorderedmap("Process new input v3", (IF0) () -> new ProcessNewInput_v3(), "Process new input v2", (IF0) () -> new ProcessNewInput_v2(), "Process new input", (IF0) () -> new ProcessNewInput(), "Run pattern", (IF0) () -> new RunPattern(), "Find rewrites for match", (IF0) () -> new FindRewrites(), "Reverse input (test algorithm)", (IF0) () -> new ReverseInput(), "Timeout test", (IF0) () -> new TimeoutTest(), "Syntactic pattern from input", (IF0) () -> new SyntacticPatternFromInput(), "Apply all text functions", (IF0) () -> new ApplyTextFunctions(), "Find Path", (IF0) () -> new FindPath(), "Execute text query", (IF0) () -> new ExecuteTextQuery(), "Make syntactic patterns for all patterns in DB", (IF0) () -> new MakeSyntacticPatterns());
      String output = empty(algorithm) || dontRun ? null : doAlgorithm(algorithms, algorithm, q, liveOutput);
      if (liveOutput)
        return jsonEncode(litorderedmap("answer", output));
      String right = mod.html_loggedIn();
      String centered = htitle_h2(ahref(mod.baseLink + "/", "Gazelle BEA") + " Query") + hscript(replaceVars("\n          var sugLoading = false, sugTriggerAgain = false;\n\n          function sugTrigger() {\n            console.log(\"sugTrigger\");\n            if (sugLoading) { sugTriggerAgain = true; return; }\n\n            // get form data as JSON\n            \n            var data = {\n              \"liveOutput\" : \"1\",\n              \"q\": $(\"textarea[name=q]\").val(),\n              \"algorithm\": $(\"select[name=algorithm]\").val()\n            };\n            \n            const url = \"/query\";\n            console.log(\"Loading \" + url + \" with \" + data);\n            sugLoading = true;\n            $.post(url, data,\n              function(result) {\n                console.log(\"Suggestor result: \" + result);\n                const answer = !result ? \"\" : JSON.parse(result).answer;\n                if (answer) {\n                  $(\"#liveResult .sectionContents\").html(answer);\n                  $(\"#liveResult\").show();\n                } else\n                  $(\"#liveResult\").hide();\n                //$(\"#suggestorResult\").html(answer ? \"Suggestor says: \" + answer : \"\");\n              }\n            ).always(function() {\n              console.log(\"sug loading done\");\n              setTimeout(function() {\n                sugLoading = false;\n                if (sugTriggerAgain) { sugTriggerAgain = false; sugTrigger(); }\n              }, liveOutputDelay);\n            });\n          }\n\n          $(document).ready(function() {\n            $(\"textarea[name=q], input[name=q], select[name=algorithm]\").on('input propertychange change', sugTrigger);\n            sugTrigger();\n          });\n        ", "liveOutputDelay", liveOutputDelay)) + hform(p("Query (Ctrl+Enter): " + htextarea(q, "id", "mainInput", "name", "q", "class", "auto-expand", "style", "max-height: 10em; width: 300px; vertical-align: top", "onkeydown", "\n              if ((event.keyCode == 10 || event.keyCode == 13) && event.ctrlKey) $(this).closest('form').submit();\n            ") + hjs("$(document).ready(function() {\n              autoExpandTextArea(document.getElementById(\"mainInput\"));\n          });") + " &nbsp; Algorithm: " + hselect_list(keys(algorithms), algorithm, "name", "algorithm") + " &nbsp; " + hbutton("Go")));
      return hhtml(hhead(hmobilefix() + hsansserif() + loadJQuery2() + hjs_autoExpandingTextAreas() + mod.webSocketHeadStuff(req) + hNotificationPopups()) + hbody(div_alignRight(right) + div_center(centered) + htitledSectionWithDiv("Live Result", "", "id", "liveResult", "style", "display: none", "innerDivStyle", "max-height: 150px; overflow: auto") + (output == null ? "" : h3(algorithm) + output)));
    }

    public String doAlgorithm(Map<String, IF0<Algorithm>> algorithms, String algorithm, String q, boolean liveMode) {
      GazelleBEA.Req req = mod.currentReq.get();
      StringBufferWithMaxSize out = new StringBufferWithMaxSize(1000000);
      IF0<Algorithm> algo = lookupPossiblyCI(algorithms, algorithm);
      if (algo == null)
        out.append("Algorithm not found: " + algorithm);
      else {
        if (isB(evalWithTimeout(algoTimeout, new Runnable() {

          public void run() {
            try {
              AutoCloseable __3 = mod.enter();
              try {
                AutoCloseable __4 = tempSetTL(mod.currentReq, req);
                try {
                  Algorithm alg = algo.get();
                  alg.liveMode = liveMode;
                  alg.q = q;
                  alg.out = out;
                  alg.runIt();
                } finally {
                  _close(__4);
                }
              } finally {
                _close(__3);
              }
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "temp mod.enter();\n        temp tempSetTL(mod.currentReq, req);\n        Algori...";
          }
        })))
          out.append("\n[algorithm timeout]");
      }
      return str(out);
    }

    abstract public class Algorithm implements Runnable {

      public String q;

      public Appendable out;

      public boolean liveMode = false;

      public Concepts localConcepts;

      public List<Runnable> nonMatches;

      public void runLiveMode() {
      }

      public void appendHTML(String html) {
        appendHTML(this.out, html);
      }

      public void appendHTML(Appendable out, String html) {
        try {
          if (empty(html))
            return;
          html = wrapInDiv(html, "style", "margin-top: 0.5em");
          out.append(html).append("\n");
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public void appendText(String text) {
        appendText(this.out, text);
      }

      public void appendText(Appendable out, String text) {
        try {
          if (empty(text))
            return;
          out.append(hpre_htmlencode(rtrim(text)));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public void appendTextBold(String text) {
        appendTextBold(this.out, text);
      }

      public void appendTextBold(Appendable out, String text) {
        try {
          if (empty(text))
            return;
          out.append(b(hpre_htmlencode(rtrim(text))));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public void allowSuggestingAnswer(BEAObject input) {
        if (input == null)
          return;
        String text = input.text();
        String url = mod.baseLink + "/saveAnswer";
        appendHTML(hpostform("Suggest an answer to " + htmlEncode_quote(text) + ": " + htextarea(text, "id", "suggestAnswer", "name", "text", "class", "auto-expand", "style", "max-height: 10em; width: 300px; vertical-align: top") + hhidden("inputID", input.id) + hhidden("redirect", "") + " " + hsubmit("Save answer") + " [Optional rewrite type: " + hinputfield("rewriteType", "style", "width: 100px") + " ]", "action", url, "onsubmit", js_setRedirect()));
      }

      public void saveInput(String q) {
        Pair<BEAObject, Boolean> p = uniqCI2(BEAObject.class, "type", "Input", "text", q);
        if (p.b) {
          csetIfUnset(p.a, "createdBy", mod.user(mod.currentReq.get()));
          appendHTML("Input saved");
        }
      }

      public void runNonMatches() {
        if (nempty(nonMatches)) {
          appendHTML(hr());
          callFAll(nonMatches);
        }
      }

      public void runIt() {
        if (liveMode)
          runLiveMode();
        else
          run();
        runNonMatches();
      }
    }

    public class ReverseInput extends Algorithm {

      public void run() {
        appendText(reversed(q));
      }

      public void runLiveMode() {
        run();
      }
    }

    public class TimeoutTest extends Algorithm {

      public void run() {
        sleepSeconds(120);
      }
    }

    public class RunPattern extends Algorithm {

      public void run() {
        BEAObject pattern = mod.beaGet(parseFirstLong(q));
        if (pattern == null) {
          appendText("Pattern not found");
          return;
        }
        appendText("Pattern: " + pattern);
        for (BEAObject input : mod.beaList("Input")) {
          String text = input.text();
          Map<String, String> mapping = matchInputWithPattern(input, pattern);
          if (mapping == null)
            nonMatches.add(new Runnable() {

              public void run() {
                try {
                  appendText("Checking Input: " + input + " - No match");
                } catch (Exception __e) {
                  throw rethrow(__e);
                }
              }

              public String toString() {
                return "appendText(\"Checking Input: \" + input + \" - No match\");";
              }
            });
          else {
            String result = "\n" + indent(formatDoubleArrowMap_horizontallyAligned(mapping));
            appendText("Checking Input: " + input + result);
            allowStoringMatch(this, input, pattern, mapping);
          }
        }
      }
    }

    public class FindRewrites extends Algorithm {

      public void run() {
        BEAObject match = mod.beaGet(parseFirstLong(q));
        if (match == null || !match.typeIs("Match")) {
          appendText("Match not found");
          return;
        }
        BEAObject pattern = (BEAObject) (cget("pattern", match));
        BEAObject input = (BEAObject) (cget("input", match));
        Map<String, String> mapping = (Map<String, String>) (get("mapping", match));
        appendText("Match: " + match);
        appendText("Input: " + input);
        appendText("Pattern: " + pattern);
        appendText("Mapping:\n" + indent(formatDoubleArrowMap_horizontallyAligned(mapping)));
        appendRewrites(this, input, input.text(), pattern, match, mapping);
      }
    }

    public List<String> appendRewrites(Algorithm algo, BEAObject input, String inputText, BEAObject pattern, BEAObject match, Map<String, String> mapping) {
      Collection<BEAObject> rewrites = mod.beaBackRefs(pattern, "Rewrite");
      List<String> texts = new ArrayList();
      for (BEAObject r : rewrites) {
        String text = r.text();
        String textWithVars = text;
        if (pattern.typeIs("Syntactic pattern"))
          textWithVars = starsToAngleBracketedNumbers(text);
        String text2 = replaceAngleBracketVars_curly(textWithVars, mapping);
        algo.appendText(" Using pattern rewrite: " + text);
        algo.appendTextBold("    " + inputText + "\n" + " => " + text2);
        texts.add(text2);
        BEAObject existing = match == null || input == null ? null : conceptWhereIC(BEAObject.class, "type", "Rewrite", "input", input, "text", text2, "match", match, "patternRewrite", r, "label", "good");
        if (existing != null)
          algo.appendHTML("Rewrite exists: " + mod.beaLinkHTML(existing));
        else if (match != null && input != null)
          algo.appendHTML(hinlinepostform(hhiddenMulti("action", "create", "f_type", "Rewrite", "f_text", text2, "f_input", input.id, "metaInfo_input", "concept", "f_match", match.id, "metaInfo_match", "concept", "f_patternRewrite", r.id, "metaInfo_patternRewrite", "concept", "f_label", "good") + hbutton("Good rewrite"), "target", "_blank", "action", mod.crudLink(BEAObject.class)));
      }
      return texts;
    }

    public class ProcessNewInput extends Algorithm {

      public void run() {
        q = trim(q);
        BEAObject input = handleInput(this, q, false);
        for (BEAObject pattern : mod.beaListAny("Pattern", "Syntactic Pattern")) {
          Map<String, String> mapping = matchInputWithPattern(q, pattern);
          if (mapping == null)
            nonMatches.add(new Runnable() {

              public void run() {
                try {
                  appendText("Checking Pattern: " + pattern + " - No match");
                } catch (Exception __e) {
                  throw rethrow(__e);
                }
              }

              public String toString() {
                return "appendText(\"Checking Pattern: \" + pattern + \" - No match\");";
              }
            });
          else {
            String result = "\n" + indent(formatDoubleArrowMap_horizontallyAligned(mapping));
            appendText("Checking Pattern: " + pattern + result);
            if (input == null) {
            } else
              allowStoringMatch(this, input, pattern, mapping);
            appendRewrites(this, input, q, pattern, null, mapping);
          }
        }
      }
    }

    public class ProcessNewInput_v2 extends Algorithm {

      public void run() {
        q = trim(q);
        saveInput(q);
        BEAObject input = handleInput(this, q, false);
        if (input != null) {
          Collection<BEAObject> rewrites = mod.beaBackRefs(input, "Rewrite");
          BEAObject rewrite = random(rewrites);
          if (rewrite != null)
            appendHTML("My answer: " + b(htmlEncode2(rewrite.text())) + " " + ahref(mod.beaShortURL(rewrite), "[source]"));
        }
        allowSuggestingAnswer(input);
        for (BEAObject pattern : syntacticPatternsSortedBySpecificityDesc()) {
          {
            if (isTrue_getOpt("alwaysMatches", pattern))
              continue;
          }
          Map<String, String> mapping = matchInputWithPattern(q, pattern);
          if (mapping == null) {
            if (nonMatches != null)
              nonMatches.add(new Runnable() {

                public void run() {
                  try {
                    appendHTML("Checking Syntactic Pattern: " + mod.beaLinkHTML(pattern) + " - No match");
                  } catch (Exception __e) {
                    throw rethrow(__e);
                  }
                }

                public String toString() {
                  return "appendHTML(\"Checking Syntactic Pattern: \" + mod.beaLinkHTML(pattern) + \" - No...";
                }
              });
          } else {
            String result = "Grouped as: " + replaceAngleBracketVars_curly(starsToAngleBracketedNumbers(pattern.text()), mapping) + "\n" + indent(formatDoubleArrowMap_horizontallyAligned(mapping));
            appendHTML(hr());
            appendHTML("Checking Syntactic Pattern: " + mod.beaLinkHTML(pattern));
            appendText(result);
            BEAObject match = null;
            if (input == null) {
            } else
              match = allowStoringMatch(this, input, pattern, mapping);
            MultiMap<String, BEAObject> subInputRewrites = ciMultiMap();
            for (String subInput : uniquifyCI(values(mapping))) if (!eqic(subInput, q)) {
              BEAObject subInputObj = handleInput(this, subInput, "Sub-Input", true);
              if (subInputObj != null) {
                List<BEAObject> subRewrites = concatLists(conceptsWhereCI(BEAObject.class, "type", "Rewrite", "input", subInputObj), conceptsWhereCI(BEAObject.class, "type", "Rewrite", "isRewriteOf", subInputObj));
                for (BEAObject r : subRewrites) appendHTML("&nbsp; Sub-Rewrite found: " + r);
                subInputRewrites.putAll(subInput, subRewrites);
              }
            }
            appendRewrites(this, input, q, pattern, match, mapping);
            Map<String, String> rewrittenMapping = mapValues(mapping, s -> {
              BEAObject rewrite = random(subInputRewrites.get(s));
              return rewrite == null ? s : uncurly(rewrite.text());
            });
            String randomRewrite = replaceAngleBracketVars_curly(starsToAngleBracketedNumbers(pattern.text()), rewrittenMapping);
            if (neq(randomRewrite, q))
              appendText("Random rewrite from sub-inputs: " + randomRewrite);
          }
        }
      }
    }

    public class ProcessNewInput_v3 extends Algorithm {

      public void run() {
        q = trim(q);
        saveInput(q);
        BEAObject input = handleInput(this, q, false);
        HTMLTabs tabs = new HTMLTabs();
        {
          StringBuffer toTab = new StringBuffer();
          Algorithm alg = new ProcessNewInput_v2();
          alg.q = q;
          alg.out = toTab;
          alg.runIt();
          tabs.add("Match input with patterns", toTab);
        }
        {
          StringBuffer toTab = new StringBuffer();
          Algorithm alg = new SyntacticPatternFromInput();
          alg.q = q;
          alg.out = toTab;
          alg.runIt();
          tabs.add("Make syntactic pattern", toTab);
        }
        appendHTML(tabs.html());
      }
    }

    public BEAObject allowStoringMatch(Algorithm algo, BEAObject input, BEAObject pattern, Map<String, String> mapping) {
      BEAObject match = conceptWhereCI(BEAObject.class, "type", "Match", "pattern", pattern, "input", input, "mapping", mapping);
      if (match != null) {
        algo.appendHTML("Match exists: " + mod.beaLinkHTML(match));
        return match;
      }
      algo.appendHTML(joinWithSpace(storeMatchForm(input, pattern, "good"), storeMatchForm(input, pattern, "bad")));
      return null;
    }

    public String storeMatchForm(BEAObject input, BEAObject pattern, String label) {
      return hinlinepostform(hhiddenMulti("pattern", pattern.id, "input", input.id, "label", label, "redirect", "") + hbutton(firstToUpper(label) + " match"), "action", mod.baseLink + "/storeMatch", "onsubmit", js_setRedirect());
    }

    public class MakeSyntacticPatterns extends Algorithm implements Runnable {

      public void run() {
        for (BEAObject p : mod.beaList("Pattern")) {
          appendText(p + " => " + makeSyntacticPattern(p));
        }
      }
    }

    public String syntacticPatternText(BEAObject p) {
      return simpleSpacesTrim_javaTok(angleBracketVarsToStars(p.text()));
    }

    public BEAObject makeSyntacticPattern(BEAObject p) {
      if (p == null || !p.typeIs("Pattern") || empty(p.text()))
        return null;
      print("makeSyntacticPattern", p);
      String text = syntacticPatternText(p);
      BEAObject sp = uniqCI(BEAObject.class, "type", "Syntactic Pattern", "text", text);
      cset(p, "syntacticPattern", sp);
      return sp;
    }

    public BEAObject handleInput(Algorithm algo, String q, boolean showProcessLink) {
      return handleInput(algo, q, "Input", showProcessLink);
    }

    public BEAObject handleInput(Algorithm algo, String q, String desc, boolean showProcessLink) {
      algo.appendHTML((desc + ": ") + tt(htmlEncode(q)) + (!showProcessLink ? "" : " " + targetBlank(addParamsToURL(mod.baseLink + "/query", "q", q, "algorithm", "process input"), "Process")));
      BEAObject input = mod.findInput(q);
      algo.appendHTML(inputHTML(input, desc, q));
      return input;
    }

    public String inputHTML(BEAObject input, String q) {
      return inputHTML(input, "Input", q);
    }

    public String inputHTML(BEAObject input, String desc, String q) {
      return input != null ? (desc + " exists: ") + mod.beaLinkHTML(input) : !mod.requestAuthed() && !mod.allowAnonymousInputUpload ? null : hinlinepostform(hhiddenMulti("text", q, "redirect", "") + hbutton(("Save " + desc)), "action", mod.baseLink + "/saveInput", "onsubmit", js_setRedirect());
    }

    public String syntacticPatternLinkHTML(BEAObject obj, String text) {
      return syntacticPatternLinkHTML(obj, text, null);
    }

    public String syntacticPatternLinkHTML(BEAObject obj, String text, BEAObject fromInput) {
      String desc = "Syntactic pattern";
      return obj != null ? mod.beaLinkHTML(obj) : !mod.requestAuthed() ? null : hinlinepostform(hhiddenMulti("text", text, "fromInput", conceptIDOrNull(fromInput), "redirect", "") + hbutton(("Save " + (firstToLower(desc)))), "action", mod.baseLink + "/saveSyntacticPattern", "onsubmit", js_setRedirect());
    }

    public class SyntacticPatternFromInput extends Algorithm implements Runnable {

      public void run() {
        BEAObject input = handleInput(this, q, false);
        if (countTokens(q) > 10) {
          appendText("Input too long to extract syntactic patterns");
          return;
        }
        String q2 = dropPunctuation(q);
        List<Map> data = new ArrayList();
        for (String pat : sortedIC(gazelle_allSyntacticPatternsFromInput(q))) {
          Map<String, String> mapping = matchInputWithSyntacticPattern(q2, pat);
          BEAObject obj = conceptWhereIC(BEAObject.class, "type", "Syntactic Pattern", "text", pat);
          Map row = litorderedmap("Syntactic Pattern", htmlEncode2(pat), "In database", syntacticPatternLinkHTML(obj, pat, input));
          for (Map.Entry<? extends String, ? extends String> __1 : _entrySet(mapping)) {
            String key = __1.getKey();
            String val = __1.getValue();
            row.put("Argument " + key, htmlEncode2(val));
          }
          data.add(row);
        }
        appendHTML(print(htmlTable2_noHtmlEncode(data)));
      }
    }

    public class ApplyTextFunctions extends Algorithm {

      public void run() {
        q = trim(q);
        saveInput(q);
        BEAObject input = handleInput(this, q, false);
        localConcepts = db_mainConcepts();
        LinkedHashSet<BEAObject> objectsMade = new LinkedHashSet();
        for (BEAObject f : mod.beaList("JavaX Standard Function")) {
          try {
            String fName = getString("name", f);
            if (!isIdentifier(fName))
              continue;
            if (!isSafeStandardFunction(fName)) {
              {
                if (nonMatches != null)
                  nonMatches.add(new Runnable() {

                    public void run() {
                      try {
                        appendText("Function " + fName + " not safe");
                      } catch (Exception __e) {
                        throw rethrow(__e);
                      }
                    }

                    public String toString() {
                      return "appendText(\"Function \" + fName + \" not safe\");";
                    }
                  });
              }
              continue;
            }
            BEAObject o = cnew(localConcepts, BEAObject.class, "type", "Function Result", "function", f, "functionCalled", fName, "input", input, "calculating", true);
            objectsMade.add(o);
            try {
              Object holder = loadFunction_cached(fName);
              Object result = evalWithTimeoutOrFail(10.0, () -> call(holder, fName, q));
              if (!(result instanceof List) && isStringCollection(result))
                result = asList((Collection) result);
              if (result == null)
                cset(o, "resultType", "null");
              else if (result instanceof String)
                cset(o, "resultType", "string", "result", result);
              else if (isStringList(result))
                cset(o, "resultType", "list of strings", "result", result);
              else
                cset(o, "result", "other" + appendRoundBracketed(className(result)), "result", shorten(1000, str(result)));
            } catch (Throwable e) {
              cset(o, "resultType", "error", "error", getStackTrace(e));
            }
            cset(o, "calculating", null);
          } catch (Throwable __e) {
            _handleException(__e);
          }
        }
        appendHTML(h3("Results of function calls"));
        HCRUD crud = mod.makeCRUD(BEAObject.class, mod.currentReq.get());
        HCRUD_Concepts crudData = (HCRUD_Concepts) (crud.data);
        crudData.listConcepts_firstStep = () -> objectsMade;
        appendHTML(crud.renderTable(true));
      }
    }

    public class FindPath extends Algorithm {

      public BreadthFirstPathFinder_withLinkType<BEAObject, FieldIndicator> pathFinder = new BreadthFirstPathFinder_withLinkType();

      public BEAObject start, dest;

      public void run() {
        start = mod.beaGet(parseFirstLong(q));
        dest = mod.beaGet(parseSecondLong(q));
        if (start == null || dest == null) {
          appendText("Please supply object IDs of start and end");
          return;
        }
        appendHTML("Looking for path from " + mod.beaToHTML(start) + " to " + mod.beaToHTML(dest));
        pathFinder.getChildren = o -> cForwardAndBackRefsWithFieldIndicator(BEAObject.class, o);
        pathFinder.add(start);
        while (!pathFinder.nodeReached(dest) && pathFinder.step()) {
        }
        List<Pair<BEAObject, FieldIndicator>> path = pathFinder.examplePathWithTypes(start, dest);
        if (path == null)
          appendText("No path found!");
        else {
          appendHTML(b("Path found!"));
          appendHTML(ol(map(path, p -> {
            String html = mod.beaHTML(p.a);
            if (p.b == null)
              return html;
            String arrow = ifThenElse(p.b.forward, ">>", "<<");
            return html + " " + htmlEncode2(joinNemptiesWithSpace(arrow, p.b.field, arrow));
          })));
        }
      }
    }

    public class ExecuteTextQuery extends Algorithm {

      public void run() {
        saveInput(q = trim(q));
        appendHTML(h3("Result"));
        appendHTML(htmlEncode2(strOrEmpty(executeTextQuery(q))));
      }
    }

    public int patternSpecificity(BEAObject pattern) {
      return countWordsWithoutAngleBracketedAndStars(pattern.text());
    }

    public List<BEAObject> syntacticPatternsSortedBySpecificityDesc() {
      return sortedByCalculatedFieldDesc(__45 -> patternSpecificity(__45), mod.beaList("Syntactic Pattern"));
    }

    public Object executeTextQuery(String s) {
      Matches m = new Matches();
      if (match3_withIntsAndIDs("all references in field <id> of object <int>", s, m)) {
        Object value = cget(mod.beaGet(m.unq(1)), m.unq(0));
        return value instanceof Collection ? instancesOf(BEAObject.class, (Collection) value) : value instanceof BEAObject ? ll((BEAObject) value) : ll();
      }
      return new QueryNotUnderstood(s);
    }

    static public class QueryNotUnderstood implements IFieldsToList {

      public String s;

      public QueryNotUnderstood() {
      }

      public QueryNotUnderstood(String s) {
        this.s = s;
      }

      public String toString() {
        return shortClassName(this) + "(" + s + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof QueryNotUnderstood))
          return false;
        QueryNotUnderstood __5 = (QueryNotUnderstood) o;
        return eq(s, __5.s);
      }

      public int hashCode() {
        int h = 1528655894;
        h = boostHashCombine(h, _hashCode(s));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { s };
      }
    }
  }

  static public class GazelleBEA extends DynGazelleRocks {

    static public boolean _switchableField_mirrorBEAObjects = true;

    public boolean mirrorBEAObjects = false;

    static public boolean _switchableField_enableAutoRuns = true;

    public boolean enableAutoRuns = true;

    static public boolean _switchableField_enableNewBEAObjectNotis = true;

    public boolean enableNewBEAObjectNotis = true;

    transient public ReliableSingleThread_Multi<BEAObject> rstAutoRuns = new ReliableSingleThread_Multi<>(1000, __18 -> performAutoRuns(__18));

    transient public Q notificationQ;

    transient public ReliableSingleThread_Multi<BEAObject> rstDistributeNewObject = new ReliableSingleThread_Multi<>(1000, __19 -> distributeNewObject_impl(__19));

    transient public Set<BEAObject> newObjectsDistributed = weakSet();

    transient public BEACalculations calculations = new BEACalculations(this);

    transient public int newFieldsToShow = 3;

    transient public boolean allowAnonymousInputUpload = true;

    static public boolean _switchableField_maxInputLength = true;

    public int maxInputLength = 50000;

    public void init() {
      super.init();
      botName = heading = adminName = "Gazelle BEA";
      enableVars = true;
      showTalkToBotLink = true;
      phoneNumberSpecialInputField = false;
    }

    public void start() {
      storeBaseClassesInStructure = true;
      super.start();
      showCRUDToEveryone = true;
      if (!enabled)
        return;
      rstUpdateBEAMirrors.addAll(list(BEAObject.class));
      newObjectsDistributed.addAll(list(BEAObject.class));
      onIndividualConceptChange_notOnAllChanged(BEAObject.class, o -> {
        if (enableAutoRuns)
          rstAutoRuns.add(o);
        if (enableNewBEAObjectNotis && newObjectsDistributed.add(o))
          rstDistributeNewObject.add(o);
      });
      notificationQ = dm_startQ();
      dm_doEvery(30.0, new Runnable() {

        public void run() {
          try {
            print(new ConceptsRefChecker(db_mainConcepts()).runAndFixAll());
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "print(ConceptsRefChecker(db_mainConcepts()).runAndFixAll());";
        }
      });
    }

    public void makeIndices() {
      super.makeIndices();
      indexConceptFieldDesc(BEAObject.class, "_modified");
      indexConceptFieldIC(BEAObject.class, "type");
      indexConceptField(BEAObject.class, "input");
    }

    public List<Class> crudClasses(Req req) {
      return listPlus(super.crudClasses(req), BEAObject.class);
    }

    public String authFormHeading() {
      return h3("Gazelle BEA");
    }

    public void makeFramer(Req req) {
      super.makeFramer(req);
      req.framer.renderTitle = () -> h1(ahref(baseLink + "/", "Gazelle BEA") + " " + htmlEncode2(req.framer.title));
      req.framer.addInHead(hjs_autoExpandingTextAreas());
    }

    public <A extends Concept> HCRUD_Concepts<A> crudData(Class<A> c, Req req) {
      HCRUD_Concepts<A> cc = super.crudData(c, req);
      if (c == BEAObject.class) {
        cc.humanizeFieldNames = false;
        cc.convertConceptValuesToRefs = true;
        cc.itemName = () -> "BEA Object";
        cc.onCreate.add(o -> cset(o, "createdBy", currentUser()));
        cc.getObjectForDuplication = id -> {
          Map<String, Object> item = cc.getObjectForDuplication_base(id);
          item.put("creator", req.auth.user.get());
          item.put("createdFrom", getConcept(toLong(id)));
          return item;
        };
        cc.emptyObject = () -> {
          Map<String, Object> item = cc.emptyObject_base();
          item.put("type", "");
          return item;
        };
        Set<String> deletableRefs = litciset("Match");
        cc.objectCanBeDeleted = id -> all(findBackRefs(BEAObject.class, cc.conceptForID(id)), o -> contains(deletableRefs, o.type()));
        cc.actuallyDeleteConcept = o -> {
          deleteConcepts(filter(findBackRefs(BEAObject.class, o), o2 -> contains(deletableRefs, o2.type())));
          cdelete(o);
        };
      }
      return cc;
    }

    public <A extends Concept> HCRUD makeCRUD(Class<A> c, Req req, HTMLFramer1 framer) {
      HCRUD crud = super.makeCRUD(c, req, framer);
      HCRUD_Concepts data = (HCRUD_Concepts) (crud.data);
      crud.showOnlySelected = true;
      crud.showSearchField = true;
      if (data.customFilter == null)
        crud.descending = true;
      crud.cleanItemIDs = true;
      if (c == BEAObject.class) {
        crud.cellColumnToolTips = true;
        crud.unshownFields = litset("mirrorPost", "globalID");
        crud.showTextFieldsAsAutoExpandingTextAreas = true;
        HCRUD_Concepts cc = (HCRUD_Concepts) (crud.data);
        String typeFilter = req.get("type");
        if (nempty(typeFilter))
          cc.addCIFilter("type", typeFilter);
        crud.renderCmds = map -> {
          BEAObject o = getConcept(BEAObject.class, crud.itemIDAsLong(map));
          List<String> cmds = new ArrayList();
          if (nempty(o.text()))
            cmds.add(targetBlank(addParamsToURL(baseLink + "/query", "q", o.text(), "algorithm", "process input"), "Use text as query"));
          if (o.typeIs("Input")) {
            cmds.add(ahref(addParamsToURL(crudLink(BEAObject.class), "cmd", "new", "title", "Add Pattern For Input", "f_type", "Pattern", "f_text", getStringOpt("text", o), "f_shouldMatch", o.id, "metaInfo_shouldMatch", "concept"), "Add pattern"));
            cmds.add(ahref(appendParamsToURL(baseLink + "/query", "q", o.text(), "algorithm", "Apply all text functions"), "Apply all text functions"));
          }
          if (o.typeIs("Pattern"))
            cmds.add(ahref(appendParamsToURL(baseLink + "/query", "q", o.id, "algorithm", "Run pattern"), "Run pattern against all inputs"));
          if (o.typeIs("Match"))
            cmds.add(ahref(appendParamsToURL(baseLink + "/query", "q", o.id, "algorithm", "Find rewrites for match"), "Find rewrites"));
          cmds.add(ahref(addParamsToURL(baseLink + "/markUseful", "redirect", beaShortURL(o), "objectID", o.id), "Mark useful"));
          cmds.add(ahref(addParamsToURL(crudLink(BEAObject.class), "cmd", "new", "title", "Add Comment", "f_type", "Comment", "f_on", o.id, "f_text", "", "metaInfo_on", "concept"), "Add comment"));
          if (o.typeIsOneOf("Script", "Step in script") || eqic(beforeVerticalBar(o.type()), "Instruction"))
            cmds.add(ahref(addParamsToURL(baseLink + "/runInstruction", "instruction", o.id), "Run"));
          if (o.typeIs("Function Result") && eqic(cget("resultType", o), "string"))
            cmds.add(ahref(addParamsToURL(baseLink + "/convertResultToInput", "result", o.id), "Convert to input"));
          framer.addInHead(hjs_copyToClipboard());
          cmds.add(ahref_onClick(formatFunctionCall("copyToClipboard", jsQuote(o.globalIDStr())), "Copy global ID [" + o.globalIDStr() + "]"));
          return joinNemptiesWithVBar(crud.renderCmds_base(map), !o.typeIsOneOf("Input", "Pattern", "Syntactic Pattern") ? null : addRewriteHTML(o), hPopDownButton(cmds));
        };
        cc.massageItemMapForList = (item, map) -> {
          BEAObject o = (BEAObject) item;
          if (o.typeIs("Input")) {
            Collection<BEAObject> matches = objectsWhereCI(findBackRefs(o, BEAObject.class), "type", "match");
            ((Map) map).put("Best Matches", new HTML(hparagraphs(lmap(__46 -> matchDescHTML(__46), takeFirst(3, matches)))));
          }
          String idField = crud.idField();
          Object id = ((Map) map).get(idField);
          if (id instanceof String)
            ((Map) map).put(idField, new HTML(ahref(beaShortURL(o), id)));
          if (o.typeIs("Function Result")) {
            Object value = getOpt("result", o);
            ((Map) map).put("result", new HTML(javaValueToHTML(value)));
          }
        };
        crud.massageFormMatrix = (map, matrix) -> {
          for (int i = 1; i <= newFieldsToShow; i++) {
            String nf = "newField" + i;
            String refSelector = crud.renderInput((nf + "_conceptValue"), cc.makeConceptsComboBox((nf + "_conceptValue"), BEAObject.class), null) + hjs("$(\"[name=" + nf + "_conceptValue]\").hide()");
            List<String> types = ll("String", "BEAObject", "Bool");
            String typeSelector = hselect_list(types, "name", (nf + "_type"), "onchange", "\r\n                var value = this.value;\r\n                $(\"[name=" + nf + "_value]\").toggle(value != \"BEAObject\");\r\n                $(\"#" + nf + "_refBox\").toggle(value == \"BEAObject\");\r\n              ");
            matrix.add(ll("Add field:<br>" + htextfield((nf + "_name"), "title", "New field name"), htmlTable2_noHtmlEncode(ll(ll(htextfield((nf + "_value")), span(refSelector, "id", (nf + "_refBox"), "style", "display: none"), "Type", typeSelector)), "noHeader", true, "tableParams", litobjectarray("style", "width: 100%"))));
          }
        };
        crud.preprocessUpdateParams = params -> {
          params = cloneMap(params);
          params = mapValues(params, v -> eq(v, "") ? null : v);
          for (int i = 1; i <= max(newFieldsToShow, 10); i++) {
            String nf = "newField" + i;
            String name = params.get((nf + "_name")), type = params.get((nf + "_type")), refValue = params.get((nf + "_conceptValue")), value = params.get((nf + "_value"));
            if (eqic(type, "BEAObject")) {
              value = refValue;
              params.put("metaInfo_" + name, "concept");
            } else if (eqic(type, "Bool"))
              params.put("metaInfo_" + name, "bool");
            if (eq(value, ""))
              value = null;
            if (nempty(name))
              params.put(crud.fieldPrefix + name, value);
          }
          return params;
        };
      }
      return crud;
    }

    public Object serveBotFunction(Req req, String function, Map data, User user) {
      if (eq(function, "beaList")) {
        long changedAfter = toLong(data.get("changedAfter"));
        double pollFor = min(bot_maxPollSeconds, toLong(data.get("pollFor")));
        long startTime = sysNow();
        if (changedAfter > 0 && changedAfter == now())
          sleep(1);
        Collection<BEAObject> objects;
        while (true) {
          objects = changedAfter == 0 ? list(BEAObject.class) : conceptsWithFieldGreaterThan_sorted(BEAObject.class, "_modified", changedAfter);
          if (nempty(objects) || pollFor == 0 || elapsedSeconds_sysNow(startTime) >= pollFor)
            return serveJSON_breakAtLevels(2, "result", map(objects, obj -> litorderedmap("gid", str(obj.globalID()), "struct", obj.structureString())));
          sleep(bot_pollInterval);
        }
      }
      return super.serveBotFunction(req, function, data, user);
    }

    transient public ReliableSingleThread_Multi<BEAObject> rstUpdateBEAMirrors = new ReliableSingleThread_Multi<>(100, c -> c.updateMirrorPost());

    public Object serveOtherPage2(Req req) {
      printVars_str("serveOtherPage2", "uri", req.uri);
      {
        Object __17 = super.serveOtherPage2(req);
        if (__17 != null)
          return __17;
      }
      String uri = dropTrailingSlashIfNemptyAfterwards(req.uri);
      Matches m = new Matches();
      if (swic_notSame(uri, "/beaCRUD/", m))
        return renderBEAObjectTable(req, urldecode(m.rest()));
      if (eq(uri, "/inputs"))
        return renderBEAObjectTable(req, "input");
      if (eq(uri, "/syntacticPatternsWithoutRewrites")) {
        HCRUD crud = makeBEAObjectCRUD(req, "Syntactic Pattern");
        HCRUD_Concepts<BEAObject> data = (HCRUD_Concepts<BEAObject>) (crud.data);
        IF1 prev = data.customFilter;
        data.customFilter = list -> {
          list = filter(list, c -> empty(beaBackRefs(c, "Rewrite")));
          return postProcess(prev, list);
        };
        crud.customTitle = "Syntactic patterns without rewrites";
        return serveCRUD(req, BEAObject.class, crud);
      }
      if (eq(uri, "/inputsWithoutRewrites")) {
        HCRUD crud = makeBEAObjectCRUD(req, "input");
        HCRUD_Concepts<BEAObject> data = (HCRUD_Concepts<BEAObject>) (crud.data);
        IF1 prev = data.customFilter;
        data.customFilter = list -> {
          list = filter(list, c -> empty(beaBackRefs(c, "Rewrite")));
          return postProcess(prev, list);
        };
        crud.customTitle = "Inputs without rewrites";
        return serveCRUD(req, BEAObject.class, crud);
      }
      if (eq(uri, "/inputsWithoutMatches")) {
        HCRUD crud = makeBEAObjectCRUD(req, "input");
        HCRUD_Concepts<BEAObject> data = (HCRUD_Concepts<BEAObject>) (crud.data);
        IF1 prev = data.customFilter;
        data.customFilter = list -> {
          list = filter(list, c -> empty(beaBackRefs(c, "Match")));
          return postProcess(prev, list);
        };
        crud.customTitle = "Inputs without matches";
        return serveCRUD(req, BEAObject.class, crud);
      }
      if (eq(uri, "/patterns"))
        return renderBEAObjectTable(req, "pattern");
      if (eq(uri, "/syntacticPatterns"))
        return renderBEAObjectTable(req, "Syntactic Pattern");
      if (eq(uri, "/matches"))
        return renderBEAObjectTable(req, "match");
      if (eq(uri, "/rewrites"))
        return renderBEAObjectTable(req, "rewrite");
      if (eq(uri, "/aiTasks"))
        return renderBEAObjectTable(req, "AI Task");
      if (eq(uri, "/query"))
        return calculations.serveQueryPage(req);
      if (eq(uri, "/saveInput")) {
        String text = trim(req.get("text"));
        String info = trim(req.get("info"));
        if (empty(text))
          return subBot_serve500("Input empty");
        if (l(text) > maxInputLength)
          return subBot_serve500("Input too long");
        BEAObject input = uniqCI(BEAObject.class, "type", "Input", "text", text, "createdBy", user(req));
        if (nempty(info))
          uniqCI(BEAObject.class, "type", "Input Source", "input", input, "source", info);
        return hrefresh(or2(req.get("redirect"), baseLink + "/"));
      }
      if (eq(uri, "/markUseful")) {
        BEAObject o = beaGet(req.get("objectID"));
        if (o == null)
          return subBot_serve500("Object not found");
        uniqCI(BEAObject.class, "type", "Useful", "object", o, "createdBy", user(req));
        return hrefresh(or2(req.get("redirect"), baseLink + "/"));
      }
      if (eq(uri, "/saveAnswer")) {
        String text = trim(req.get("text"));
        String rewriteType = or2(trim(req.get("rewriteType")), "Suggested Answer");
        long inputID = toLong(req.get("inputID"));
        BEAObject input = beaGet(inputID);
        if (input == null)
          return subBot_serve500("Input not found");
        if (empty(text))
          return subBot_serve500("Text empty");
        if (l(text) > maxInputLength)
          return subBot_serve500("Text too long");
        uniqCI(BEAObject.class, "type", "Rewrite", "text", text, "isRewriteOf", input, "rewriteType", rewriteType, "createdBy", user(req));
        return hrefresh(or2(req.get("redirect"), baseLink + "/"));
      }
      if (!inMasterMode(req))
        return null;
      if (eq(uri, "/uploadInputs"))
        return serveUploadTexts(req, "Input");
      if (eq(uri, "/uploadPatterns"))
        return serveUploadTexts(req, "Pattern");
      if (eq(uri, "/analyzeInput"))
        return calculations.serveAnalyzeInput(req);
      if (eq(uri, "/allBEATypes")) {
        MultiSet<String> ms = asCIMultiSet(collect("type", list(BEAObject.class)));
        return h2_title("All BEA object types") + ul(mapPairs(multiSetToPairsByPopularity(ms), (type, count) -> {
          String _type = or2(type, "(no type)");
          return count + " " + ahref(baseLink + "/beaCRUD/" + urlencode(_type), htmlEncode2(_type));
        }));
      }
      if (eq(uri, "/storeMatch")) {
        BEAObject pattern = beaGet(req.get("pattern"));
        BEAObject input = beaGet(req.get("input"));
        String label = req.get("label");
        BEAObject match = calculations.reactInputWithPattern(input, pattern);
        if (match == null)
          return "Couldn't match";
        cset(match, "label", label);
        return hrefresh(or2(req.get("redirect"), beaObjectURL(match)));
      }
      if (eq(uri, "/saveSyntacticPattern")) {
        String text = req.get("text");
        BEAObject fromInput = beaGet(req.get("fromInput"));
        BEAObject pat = uniqCI(BEAObject.class, "type", "Syntactic Pattern", "text", text, "createdBy", user(req));
        csetIfUnset(pat, "fromInput", fromInput);
        if (fromInput != null)
          calculations.reactInputWithPattern(fromInput, pat);
        return hrefresh(or2(req.get("redirect"), baseLink + "/"));
      }
      if (eq(uri, "/runInstruction")) {
        BEAObject o = beaGet(req.get("instruction"));
        runInstruction(o);
        return hrefresh(beaObjectURL(o));
      }
      if (eq(uri, "/convertResultToInput")) {
        BEAObject result = beaGet(req.get("result"));
        if (result == null)
          return subBot_serve500("Object not found");
        String text = unquote(getString("result", result));
        if (l(text) > maxInputLength)
          return subBot_serve500("Input too long");
        BEAObject input = uniqCI(BEAObject.class, "type", "Input", "text", text);
        uniqCI(BEAObject.class, "type", "Input Source", "input", input, "source", result);
        return hrefresh(beaShortURL(input));
      }
      return null;
    }

    public HCRUD makeBEAObjectCRUD(Req req, String type) {
      HCRUD crud = makeCRUD(BEAObject.class, req);
      crud.baseLink = req.uri();
      HCRUD_Concepts data = (HCRUD_Concepts) (crud.data);
      data.itemName = () -> firstToUpper(type);
      data.addCIFilter("type", eqic(type, "(no type)") ? null : type);
      if (eqicOneOf(type, "Input", "Pattern", "AI Task")) {
        IF0<Map<String, Object>> prev = data.emptyObject;
        data.emptyObject = () -> {
          Map<String, Object> item = data.emptyObject_fallback(prev);
          item.put("text", "");
          return item;
        };
      }
      return crud;
    }

    public Object renderBEAObjectTable(Req req, String type) {
      HCRUD crud = makeBEAObjectCRUD(req, type);
      return serveCRUD(req, BEAObject.class, crud);
    }

    public Object serveUploadTexts(Req req, String type) {
      String inputs = req.get("text");
      List<String> output = new ArrayList();
      if (nempty(inputs)) {
        for (String text : tlft(inputs)) {
          Pair<BEAObject, Boolean> p = uniqCI2_sync(BEAObject.class, "type", type, "text", text);
          if (cget("uploadedBy", p.a) == null)
            cset(p.a, "uploadedBy", req.auth.user);
          output.add(type + " " + (p.b ? "added" : "exists") + " (ID " + p.a.id + "): " + text);
        }
      }
      return h2("Upload " + plural(type)) + hpostform(p(plural(type) + " (one per line):") + p(htextarea(inputs, "name", "text")) + pIfNempty(htmlEncode_nlToBR(lines(output))) + hsubmit("Upload " + plural(type)));
    }

    public Collection<BEAObject> beaObjectsOfType(String type) {
      return conceptsWhereCI(BEAObject.class, "type", type);
    }

    public void reactAllInputsWithSomePatterns() {
      calculations.reactAllInputsWithSomePatterns();
    }

    public String navDiv() {
      HCRUD crud = makeCRUD(BEAObject.class, currentReq.get());
      int inputsWithoutRewrites = countPred(beaList("Input"), c -> empty(beaBackRefs(c, "Rewrite")));
      int inputsWithoutMatches = countPred(beaList("Input"), c -> empty(beaBackRefs(c, "Match")));
      int syntacticPatternsWithoutRewrites = countPred(beaList("Syntactic Pattern"), c -> empty(beaBackRefs(c, "Rewrite")));
      return joinNemptiesWithVBar(beaNavLink("Input", crud), beaNavLink("Pattern", crud), beaNavLink("Syntactic Pattern", crud), ahref(baseLink + "/syntacticPatternsWithoutRewrites", n2(syntacticPatternsWithoutRewrites) + " Syntactic patterns w/o rewrites"), beaNavLink("Match", crud), beaNavLink("Rewrite", crud), beaNavLink("AI Task", crud), ahref(baseLink + "/query", "Query"), ahref(baseLink + "/inputsWithoutMatches", n2(inputsWithoutMatches) + " Inputs w/o matches"), ahref(baseLink + "/inputsWithoutRewrites", n2(inputsWithoutRewrites) + " Inputs w/o rewrites"), hPopDownButtonWithText("Bot Forum", navLinks("flat", true, "withStats", false)), hPopDownButton(ahref(baseLink + "/allBEATypes", "All object types"), ahref(baseLink + "/stats", "Stats"), !inMasterMode(currentReq.get()) ? null : ahref(baseLink + "/refchecker", "Reference checker")));
    }

    public String beaNavLink(String type, HCRUD crud) {
      return beaNavLink(type, crud, beaCount(type));
    }

    public String beaNavLink(String type, HCRUD crud, int count) {
      String plural = firstToLower(plural(type));
      String link = baseLink + "/" + camelCase(plural);
      return ahref(link, count + " " + firstToUpper(plural)) + (!crud.actuallyAllowCreate() ? "" : " " + ahref(addParamToURL(link, "cmd", "new"), "+"));
    }

    public String beaObjectURL(BEAObject o) {
      return conceptLink(o, currentReq.get());
    }

    public String matchDescHTML(BEAObject m) {
      try {
        BEAObject pat = cget("pattern", m);
        Map<String, String> mapping = (Map<String, String>) (cget("mapping", m));
        return ahref_undecorated(crudLink(m), htmlEncode2(quote(getString("text", pat))) + "<br>&nbsp; with " + renderEqualsCommaProperties(mapping));
      } catch (Throwable __e) {
        _handleException(__e);
      }
      return htmlEncode2(str(m));
    }

    public int beaCount(String type) {
      return countConceptsWhereCI(BEAObject.class, "type", type);
    }

    public Collection<BEAObject> beaList(String type) {
      return conceptsWhereCI(BEAObject.class, "type", type);
    }

    public Collection<BEAObject> beaListAny(String... types) {
      return concatLists(lmap(__47 -> beaList(__47), litciset(types)));
    }

    public BEAObject beaGet(long id) {
      return getConceptOpt(BEAObject.class, id);
    }

    public BEAObject beaGet(String id) {
      return beaGet(parseFirstLong(id));
    }

    public BEAObject cgetBEA(String field, BEAObject o) {
      return (BEAObject) cget(field, o);
    }

    public String beaLinkHTML(BEAObject o) {
      return o == null ? null : ahref(conceptLink(o), htmlEncode2_nlToBr(str(o)));
    }

    public String beaToHTML(BEAObject o) {
      return beaLinkHTML(o);
    }

    public String beaHTML(BEAObject o) {
      return beaLinkHTML(o);
    }

    public String beaShortURL(BEAObject o) {
      return o == null ? null : baseLink + "/" + o.id;
    }

    public Collection<BEAObject> beaBackRefs(BEAObject o, String type) {
      return objectsWhereCI(findBackRefs(BEAObject.class, o), "type", type);
    }

    public Object serveDefaultPage(Req req) {
      HTMLFramer1 framer = req.framer;
      framer.add(hcenter3(hsnippetimg_scaleToWidth(200, "#1102967", 200, 110, "title", "Gazelle"), "style", "margin-top: 100px"));
      return completeFrame(req);
    }

    public String html_loggedIn() {
      User user = user(currentReq.get());
      return user == null ? ahref(baseLink + "/", "Log in") : "Logged in as " + htmlEncode2(user.name);
    }

    public void distributeNewObject_impl(BEAObject o) {
      if (o.typeIs("Match"))
        return;
      distributeNotification("New object: " + o);
    }

    public void performAutoRuns(BEAObject o) {
      print("performAutoRuns", o);
      for (BEAObject autoRun : beaList("Auto Run")) {
        if (!isTrue(getOpt("enabled", autoRun))) {
          print("Not enabled: " + autoRun);
          continue;
        }
        String type = getString("onChangedObjectOfType", autoRun);
        if (!o.typeIs(type)) {
          print("Wrong type: " + type);
          continue;
        }
        print("Running " + autoRun);
        BEAObject procedure = (BEAObject) (cget("procedure", autoRun));
        String internalCode = getString("internalCode", procedure);
        print("internalCode", internalCode);
        if (eqic(internalCode, "convertInputToPattern")) {
          String text = o.text();
          if (!containsAngleBracketVars(text)) {
            print("No angle bracket vars");
            continue;
          }
          BEAObject p = uniqCI_returnIfNew(BEAObject.class, "type", "Pattern", "text", text);
          cset(p, "fromInput", o, "byProcedure", procedure, "byAutoRun", autoRun);
          print("p", p);
        } else if (eqic(internalCode, "makeSyntacticPattern")) {
          print("sp", calculations.makeSyntacticPattern(o));
        } else
          print("Unknown internal code");
      }
    }

    public BEAObject findInput(String text) {
      return conceptWhereIC(BEAObject.class, "type", "Input", "text", text);
    }

    public String addRewriteHTML(BEAObject o) {
      return ahref(addParamsToURL(crudLink(BEAObject.class), "cmd", "new", "title", "Add Rewrite", "f_type", "Rewrite", "f_text", getStringOpt("text", o), "f_isRewriteOf", o.id, "metaInfo_isRewriteOf", "concept"), "Add Rewrite");
    }

    public Object serveIntegerLink(Req req, long id) {
      BEAObject o = getConceptOpt(BEAObject.class, id);
      if (o != null)
        return htitle(str(o)) + hrefresh(conceptLink(o));
      return super.serveIntegerLink(req, id);
    }

    public void distributeTestNotification() {
      distributeNotification("It is " + localTimeWithSeconds());
    }

    public void distributeNotification(String text) {
      notificationQ.add(new Runnable() {

        public void run() {
          try {
            for (Pair<Object, WebSocketInfo> p : syncMapToPairs(webSockets)) {
              String jsCode = "window.createNotification({ theme: 'success', showDuration: 3000 })(" + jsonEncodeMap("message", text) + ");";
              call(p.a, "send", jsonEncodeMap("eval", jsCode));
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "/*for (User user)\r\n        if (nemptyAfterTrim(user.notificationSetting))\r\n  ...";
        }
      });
    }

    public void runInstruction(BEAObject o) {
      if (o == null)
        return;
      try {
        BEAObject instruction = o;
        if (o.typeIs("Step in script"))
          instruction = (BEAObject) cget(o, "instruction");
        if (instruction.typeIs("Instruction | List objects by type")) {
          saveInstructionResult(o, beaList(getString("typeToList", instruction)));
          return;
        }
        if (instruction.typeIs("Instruction | List object types")) {
          saveInstructionResult(o, distinctCIFieldValuesOfConcepts(BEAObject.class, "type"));
          return;
        }
        if (instruction.typeIs("Instruction | Filter list by text starting with")) {
          BEAObject scriptRun = cgetBEA("scriptRun", o);
          if (scriptRun == null)
            throw fail("Need to be run as part of script");
          List<BEAObject> steps = scriptRunSteps(scriptRun);
          int idx = indexOf(steps, o);
          if (idx < 0)
            throw fail("Step not found in script run");
          List<BEAObject> list = firstNotNull(map(reversed(takeFirst(steps, idx)), step -> optCast(List.class, cget("data", cgetBEA("result", step)))));
          String prefix = getString("prefix", instruction);
          List<BEAObject> filtered = filter(list, obj -> swic(obj.text(), prefix));
          saveInstructionResult(o, filtered);
          return;
        }
        if (instruction.typeIs("Script")) {
          BEAObject script = instruction;
          BEAObject scriptRun = cnew(BEAObject.class, "type", "Script Run", "script", script);
          int i = 0;
          List<BEAObject> steps = new ArrayList();
          while ((instruction = (BEAObject) cget(instruction, "step" + (++i))) != null) {
            BEAObject step = cnew(BEAObject.class, "type", "Step in script", "step", i, "scriptRun", scriptRun, "instruction", instruction);
            steps.add(step);
          }
          cset(scriptRun, "steps", steps);
          return;
        }
        cnew(BEAObject.class, "type", "Instruction Error", "instruction", o, "error", "Unknown instruction type");
      } catch (Throwable e) {
        cnew(BEAObject.class, "type", "Instruction Error", "instruction", o, "error", getStackTrace(e));
      }
    }

    public BEAObject saveInstructionResult(BEAObject instruction, Object data) {
      BEAObject result = cnew(BEAObject.class, "type", "Instruction Result", "instruction", instruction, "data", data);
      cset(instruction, "result", result);
      return result;
    }

    public List<BEAObject> scriptRunSteps(BEAObject scriptRun) {
      return (List) cget("steps", scriptRun);
    }
  }

  static public boolean _moduleClass_GazelleBEA = true;

  static public class BEAObject extends ConceptWithGlobalID {

    public Ref<UserPost> mirrorPost = new Ref();

    public void change() {
      super.change();
      ((GazelleBEA) botMod()).rstUpdateBEAMirrors.add(this);
    }

    public void delete() {
      cdelete(mirrorPost.get());
      super.delete();
    }

    public void updateMirrorPost() {
      GazelleBEA mod = (GazelleBEA) (botMod());
      if (isDeleted() || !mod.mirrorBEAObjects)
        return;
      if (!mirrorPost.has())
        cset(this, "mirrorPost", cnew(UserPost.class, "type", "BEA Object", "creator", mod.internalUser(), "botInfo", "BEA Mirror Bot"));
      String text = structureString();
      cset(mirrorPost.get(), "title", str(this), "text", text);
    }

    public String structureString() {
      String text = "Error";
      try {
        structure_Data data = new structure_Data() {

          public structure_ClassInfo newClass(Class c) {
            structure_ClassInfo info = super.newClass(c);
            if (c == Concept.Ref.class) {
              info.special = true;
              info.serializeObject = o -> {
                Concept cc = (Concept) (deref((Concept.Ref) o));
                if (cc instanceof BEAObject)
                  append("CRef(gid=" + quote(((BEAObject) cc).globalID()) + ")", 6);
                else if (cc != null)
                  append("CRef(id=" + cc.id + ")", 6);
                else
                  append("CRef", 1);
              };
            }
            return info;
          }

          public void setFields(structure_ClassInfo info, List<Field> fields) {
            if (isSubclassOf(info.c, BEAObject.class)) {
              removeAll(fields, getField(BEAObject.class, "refs"), getField(BEAObject.class, "backRefs"));
            }
            super.setFields(info, fields);
          }
        };
        String struct = structure(this, data);
        struct = dropLoadableUtilsPackageFromStruct(struct);
        text = indentStructureString_firstLevels(1, struct);
      } catch (Throwable __e) {
        _handleException(__e);
      }
      return text;
    }

    public String toString() {
      String type = strOrNull(cget("type", this));
      String s = super.toString();
      if (nempty(type)) {
        s = type + " " + id;
        if (eqic(type, "Match"))
          s += appendBracketed(strOrNull(getOpt("label", this))) + " " + getOpt("mapping", this) + appendBracketed(getOpt("input", this) + " + " + getOpt("pattern", this));
      }
      boolean enabled = eq(true, getOpt("enabled", this));
      if (enabled)
        s += " [enabled]";
      String text = or2(text(), getStringOpt("name", this));
      if (text != null)
        s += " " + quote(text);
      Object fc = getOpt("functionCalled", this);
      if (fc != null)
        s += " " + fc;
      return s;
    }

    public String type() {
      return getStringOpt("type", this);
    }

    public boolean typeIs(String type) {
      return eqic(type(), type);
    }

    public boolean typeIsOneOf(String... types) {
      return eqicOneOf(type(), types);
    }

    public String text() {
      return getStringOpt("text", this);
    }
  }

  static public String programID;

  static public void _onLoad_initUtils() {
    utils.__javax = javax();
  }

  static public void _onLoad_defaultClassFinder() {
    setDefaultClassFinder(new F1<String, Class>() {

      public Class get(String name) {
        Class c = findClass_fullName(name);
        if (c != null)
          return c;
        if (name.startsWith("main$"))
          return loadableUtils.utils.findClass_fullName("loadableUtils.utils" + name.substring(4));
        return null;
      }
    });
  }

  static public ThreadLocal<Boolean> dynamicObjectIsLoading_threadLocal() {
    return DynamicObject_loading;
  }

  static volatile public Concepts mainConcepts;

  static public Concepts db_mainConcepts() {
    if (mainConcepts == null)
      mainConcepts = newConceptsWithClassFinder(getDBProgramID());
    return mainConcepts;
  }

  static public void cleanMeUp_concepts() {
    if (db_mainConcepts() != null)
      db_mainConcepts().cleanMeUp();
  }

  static public void stepAllWithTimeout(double timeout, Steppable s) {
    if (s == null)
      return;
    long endTime = sysNow() + toMS(timeout);
    do {
      ping();
    } while (s.step() && sysNow() < endTime);
  }

  static public <A extends Concept> int countConceptsWhereIC(Concepts cc, Class<A> c, Object... params) {
    return countConceptsCI(cc, c, params);
  }

  static public <A extends Concept> int countConceptsWhereIC(Class<A> c, Object... params) {
    return countConceptsCI(c, params);
  }

  static public <A> Iterator<A> iterator(Iterable<A> c) {
    return c == null ? emptyIterator() : c.iterator();
  }

  static public <A extends Concept> List<A> sortByConceptID(Collection<A> l) {
    return sortConceptsByID(l);
  }

  static public <A extends Concept> List<A> conceptsWhereIC(Class<A> c, Object... params) {
    return conceptsWhereIC(db_mainConcepts(), c, params);
  }

  static public List<Concept> conceptsWhereIC(String c, Object... params) {
    return conceptsWhereIC(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> List<A> conceptsWhereIC(Concepts concepts, Class<A> c, Object... params) {
    params = expandParams(c, params);
    return filterConceptsIC(concepts.list(c), params);
  }

  static public List<Concept> conceptsWhereIC(Concepts concepts, String c, Object... params) {
    return filterConceptsIC(concepts.list(c), params);
  }

  static public String getString(Map map, Object key) {
    return map == null ? null : (String) map.get(key);
  }

  static public String getString(List l, int idx) {
    return (String) get(l, idx);
  }

  static public String getString(Object o, Object key) {
    if (o instanceof Map)
      return getString((Map) o, key);
    if (key instanceof String)
      return (String) getOpt(o, (String) key);
    throw fail("Not a string key: " + getClassName(key));
  }

  static public String getString(String key, Object o) {
    return getString(o, (Object) key);
  }

  static public boolean isTrue_getOpt(String field, Object o) {
    return isTrue(getOpt(field, o));
  }

  static public boolean eqic_gen(Object a, Object b) {
    return a instanceof String && b instanceof String && eqic((String) a, (String) b);
  }

  static public boolean phraseCache(String pattern, String s) {
    return mmo2_match(pattern, s);
  }

  static public boolean phraseCache(MMOPattern pattern, String s) {
    return mmo2_match(pattern, s);
  }

  static public IF1<String, Boolean> phraseCache(String pattern) {
    return phraseCache(mmo2_parsePattern(pattern));
  }

  static public IF1<String, Boolean> phraseCache(MMOPattern pattern) {
    return s -> phraseCache(pattern, s);
  }

  static public HashMap litmap(Object... x) {
    HashMap map = new HashMap();
    litmap_impl(map, x);
    return map;
  }

  static public void litmap_impl(Map map, Object... x) {
    if (x != null)
      for (int i = 0; i < x.length - 1; i += 2) if (x[i + 1] != null)
        map.put(x[i], x[i + 1]);
  }

  static public String starsToAngleBracketedNumbers(String s) {
    List<String> tok = javaTokWithAngleBrackets(s);
    int count = 0;
    for (int idx : indicesOf(tok, "*")) tok.set(idx, angleBracketed(str(++count)));
    return join(tok);
  }

  static public Map<String, String> flexMatchAngleBracketVarsIC_honorPunctuation_first(String pat, String input) {
    return grabValueAndCancel(new VF1<VF1<Map<String, String>>>() {

      public void get(VF1<Map<String, String>> onMatch) {
        try {
          flexMatchAngleBracketVarsIC_honorPunctuation_iterate(pat, input, onMatch);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "flexMatchAngleBracketVarsIC_honorPunctuation_iterate(pat, input, onMatch);";
      }
    });
  }

  static public Map<String, String> flexMatchAngleBracketVarsIC_first(String pat, String input) {
    return grabValueAndCancel(new VF1<VF1<Map<String, String>>>() {

      public void get(VF1<Map<String, String>> onMatch) {
        try {
          flexMatchAngleBracketVarsIC_iterate(pat, input, onMatch);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "flexMatchAngleBracketVarsIC_iterate(pat, input, onMatch);";
      }
    });
  }

  static public Concept cnew(String name, Object... values) {
    return cnew(db_mainConcepts(), name, values);
  }

  static public Concept cnew(Concepts concepts, String name, Object... values) {
    Class<? extends Concept> cc = findClass(name);
    concepts_unlisted.set(true);
    Concept c;
    try {
      c = cc != null ? nuObject(cc) : new Concept(name);
    } finally {
      concepts_unlisted.set(null);
    }
    concepts.register(c);
    csetAll(c, values);
    return c;
  }

  static public <A extends Concept> A cnew(Class<A> cc, Object... values) {
    return cnew(db_mainConcepts(), cc, values);
  }

  static public <A extends Concept> A cnew(Concepts concepts, Class<A> cc, Object... values) {
    concepts_unlisted.set(true);
    A c;
    try {
      c = nuObject(cc);
    } finally {
      concepts_unlisted.set(null);
    }
    concepts.register(c);
    csetAll(c, values);
    return c;
  }

  static public Concept getConcept(long id) {
    return db_mainConcepts().getConcept(id);
  }

  static public Concept getConcept(Concepts concepts, long id) {
    return concepts.getConcept(id);
  }

  static public <A extends Concept> A getConcept(Class<A> cc, long id) {
    return getConcept(db_mainConcepts(), cc, id);
  }

  static public <A extends Concept> A getConcept(Concepts concepts, Class<A> cc, long id) {
    Concept c = concepts.getConcept(id);
    if (c == null)
      return null;
    if (!isInstance(cc, c))
      throw fail("Can't convert concept: " + getClassName(c) + " -> " + getClassName(cc) + " (" + id + ")");
    return (A) c;
  }

  static public long parseLong(String s) {
    if (empty(s))
      return 0;
    return Long.parseLong(dropSuffix("L", s));
  }

  static public long parseLong(Object s) {
    return Long.parseLong((String) s);
  }

  static public String h1_title(String s) {
    return htitle_h1(s);
  }

  static public String p(Object contents, Object... params) {
    return hfulltag("p", contents, params) + "\n";
  }

  static public String b(Object contents, Object... params) {
    return tag("b", contents, params);
  }

  static public String htmlEncode(String s) {
    return htmlencode(s);
  }

  static public boolean empty(Collection c) {
    return c == null || c.isEmpty();
  }

  static public boolean empty(Iterable c) {
    return c == null || !c.iterator().hasNext();
  }

  static public boolean empty(CharSequence s) {
    return s == null || s.length() == 0;
  }

  static public boolean empty(Map map) {
    return map == null || map.isEmpty();
  }

  static public boolean empty(Object[] o) {
    return o == null || o.length == 0;
  }

  static public boolean empty(Object o) {
    if (o instanceof Collection)
      return empty((Collection) o);
    if (o instanceof String)
      return empty((String) o);
    if (o instanceof Map)
      return empty((Map) o);
    if (o instanceof Object[])
      return empty((Object[]) o);
    if (o instanceof byte[])
      return empty((byte[]) o);
    if (o == null)
      return true;
    throw fail("unknown type for 'empty': " + getType(o));
  }

  static public boolean empty(Iterator i) {
    return i == null || !i.hasNext();
  }

  static public boolean empty(double[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(float[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(int[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(long[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(byte[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(short[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(MultiSet ms) {
    return ms == null || ms.isEmpty();
  }

  static public boolean empty(MultiMap mm) {
    return mm == null || mm.isEmpty();
  }

  static public boolean empty(File f) {
    return getFileSize(f) == 0;
  }

  static public boolean empty(IntRange r) {
    return r == null || r.empty();
  }

  static public boolean empty(Chain c) {
    return c == null;
  }

  static public String ul_htmlEncode(String... list) {
    return ul_htmlEncode(asList(list));
  }

  static public String ul_htmlEncode(Collection list, Object... params) {
    return ul(map("htmlEncode2", allToString(list)), params);
  }

  static public boolean eq(Object a, Object b) {
    return a == b || a != null && b != null && a.equals(b);
  }

  static public boolean eqic(String a, String b) {
    if ((a == null) != (b == null))
      return false;
    if (a == null)
      return true;
    return a.equalsIgnoreCase(b);
  }

  static public boolean eqic(char a, char b) {
    if (a == b)
      return true;
    char u1 = Character.toUpperCase(a);
    char u2 = Character.toUpperCase(b);
    if (u1 == u2)
      return true;
    return Character.toLowerCase(u1) == Character.toLowerCase(u2);
  }

  static public LinkedHashMap litorderedmap(Object... x) {
    LinkedHashMap map = new LinkedHashMap();
    litmap_impl(map, x);
    return map;
  }

  static public String jsonEncode(Object o) {
    StringBuilder buf = new StringBuilder();
    jsonEncode(o, buf);
    return str(buf);
  }

  static public void jsonEncode(Object o, StringBuilder buf) {
    if (o == null)
      buf.append("null");
    else if (o instanceof String)
      buf.append(quote((String) o));
    else if (o instanceof Number || o instanceof Boolean)
      buf.append(o);
    else if (o instanceof Map) {
      Map map = (Map) o;
      buf.append("{");
      boolean first = true;
      for (Object key : keys(map)) {
        if (first)
          first = false;
        else
          buf.append(",");
        buf.append(quote((String) key));
        buf.append(":");
        jsonEncode(map.get(key), buf);
      }
      buf.append("}");
    } else if (o instanceof Collection) {
      Collection l = (Collection) o;
      buf.append("[");
      boolean first = true;
      for (Object element : l) {
        if (first)
          first = false;
        else
          buf.append(",");
        jsonEncode(element, buf);
      }
      buf.append("]");
    } else
      throw fail("Unknown object for JSON encoding: " + className(o));
  }

  static public String htitle_h2(String s) {
    return htitle_noEncode(dropTags(s)) + h2(s);
  }

  static public String ahref(String link, Object contents, Object... params) {
    return link == null ? str(contents) : href(link, contents, params);
  }

  static public String hscript(String script) {
    return hjavascript(script);
  }

  static public <A> String replaceVars(String s, Map<String, A> map) {
    return empty(map) ? s : join(replaceVars(javaTok(s), map));
  }

  static public <A> List<String> replaceVars(List<String> tok, Map<String, A> map) {
    if (empty(map))
      return tok;
    tok = cloneList(tok);
    for (Map.Entry<? extends String, ? extends Object> __0 : _entrySet(map)) {
      String var = __0.getKey();
      Object val = __0.getValue();
      jreplace(tok, var, str(val));
    }
    return tok;
  }

  static public String replaceVars(String s, Object... params) {
    return replaceVars(s, paramsToMap(params));
  }

  static public String hform(Object contents, Object... params) {
    return htag("form", contents, params);
  }

  static public String htextarea(String text, Object... params) {
    params = html_massageAutofocusParam(params);
    return hopeningTag("textarea", params) + htmlencode2(text) + "</textarea>";
  }

  static public String hjs(String script) {
    return hjavascript(script);
  }

  static public String hselect_list(Collection<String> entries, Object... params) {
    StringBuilder buf = new StringBuilder();
    String selected = null;
    if (odd(l(params))) {
      selected = str(first(params));
      params = dropFirst(params);
    }
    int i = indexOf(params, "allowEmpty");
    if (even(i)) {
      buf.append("<option></option>\n");
      params[i] = params[i + 1] = null;
    }
    if (nempty(entries))
      for (String k : entries) {
        String value = k;
        boolean isSelected = eq(selected, k);
        buf.append(hfulltag("option", htmlencode(str(or(value, ""))), "value", k, "selected", isSelected ? html_valueLessParam() : null)).append("\n");
      }
    return tag("select", buf, params) + "\n";
  }

  static public <A, B> Set<A> keys(Map<A, B> map) {
    return map == null ? new HashSet() : map.keySet();
  }

  static public Set keys(Object map) {
    return keys((Map) map);
  }

  static public <A> Set<A> keys(MultiSet<A> ms) {
    return ms.keySet();
  }

  static public <A, B> Set<A> keys(MultiMap<A, B> mm) {
    return mm.keySet();
  }

  static public <A, B> Set<A> keys(MultiSetMap<A, B> mm) {
    return mm.keySet();
  }

  static public String hbutton(String text, Object... params) {
    return hfulltag("button", text, params);
  }

  static public String hhtml(Object contents) {
    return containerTag("html", contents);
  }

  static public String hhead(Object contents) {
    return tag("head", contents);
  }

  static public String hmobilefix() {
    return "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">";
  }

  static public String hmobilefix(String html) {
    return hAddToHead(html, hmobilefix());
  }

  static public String hsansserif() {
    return hcss("body { font-family: Sans-Serif; }");
  }

  static public String loadJQuery2() {
    return "<script src=\"https://code.jquery.com/jquery-3.2.1.min.js\"></script>";
  }

  static public String hjs_autoExpandingTextAreas() {
    return hcss("\r\n      textarea.auto-expand {\r\n        max-height: 10em; vertical-align: top;\r\n      }\r\n    ") + hjs("\r\n    var autoExpandTextArea = function (field) {\r\n      field.style.height = \"1px\";\r\n      \r\n      // Get the computed styles for the element\r\n      var computed = window.getComputedStyle(field);\r\n      \r\n      var h = field.scrollHeight\r\n        + parseInt(computed.getPropertyValue('border-top-width'))\r\n        + parseInt(computed.getPropertyValue('border-bottom-width'));\r\n    \r\n      field.style.height = h + 'px';\r\n    };\r\n  \r\n    document.addEventListener('input', function (event) {\r\n      if (event.target.tagName.toLowerCase() !== 'textarea') return;\r\n      if (!event.target.classList.contains(\"auto-expand\")) return;\r\n      autoExpandTextArea(event.target);\r\n    }, false);\r\n  \r\n    $(document).ready(function() {\r\n      $(\"textarea.auto-expand\").each(function() { autoExpandTextArea(this); });\r\n    });\r\n  ");
  }

  static public String hNotificationPopups() {
    return hStylesheetSnippet_maxCache("#1029723") + hjssnippet_maxCache("#1029726") + hjs("\r\n      function successNotification(text) {\r\n        window.createNotification({ theme: 'success', showDuration: 3000 })({ message: text });\r\n      }\r\n      \r\n      function errorNotification(text) {\r\n        window.createNotification({ theme: 'error', showDuration: 3000 })({ message: text });\r\n      }\r\n    ");
  }

  static public String hbody(Object contents, Object... params) {
    return tag("body", contents, params);
  }

  static public String div_alignRight(Object contents, Object... params) {
    return div(contents, params_stylePlus(params, "text-align: right"));
  }

  static public String div_center(Object contents, Object... __) {
    return hcenter3(contents, __);
  }

  static public String htitledSectionWithDiv(String title, Object contents, Object... params) {
    String backgroundColor = "#fff";
    String labelStyle = "width: auto; float: top; position: relative; top: -.6em; left:15px; background-color: " + backgroundColor;
    String innerDivStyle = stringPar("innerDivStyle", params);
    params = dropParam("innerDivStyle", params);
    return div(htag("label", b("&nbsp;" + title + "&nbsp;"), "style", labelStyle) + div(contents, "style", joinNemptiesWithSemicolon(innerDivStyle, "padding-left: 15px"), "class", "sectionContents"), params_stylePlus("border: 2px solid", params));
  }

  static public String h3(String s, Object... params) {
    return tag("h3", s, params) + "\n";
  }

  static public <A> List<A> lookupPossiblyCI(MultiMap<String, A> map, String key) {
    return lookupPossiblyIgnoreCase(map, key);
  }

  static public <A> A lookupPossiblyCI(Map<String, A> map, String key) {
    return lookupPossiblyIgnoreCase(map, key);
  }

  static public <A, B> boolean isB(Either<A, B> e) {
    return eitherIsB(e);
  }

  static public Set<Thread> evalWithTimeout_inTime = synchroSet();

  static public Set<Thread> evalWithTimeout_allThreads = newWeakHashSet();

  static public ThreadLocal<String> evalWithTimeout_threadName = new ThreadLocal();

  static public Either<Object, Thread> evalWithTimeout(int timeoutMS, final Object r) {
    final Flag done = new Flag();
    final Flag doneWaiting = new Flag();
    final Var var = new Var();
    final Var<Throwable> error = new Var();
    Thread t = newThread(getAndClearThreadLocal(evalWithTimeout_threadName), new Runnable() {

      public void run() {
        try {
          try {
            try {
              var.set(callF(r));
            } finally {
              evalWithTimeout_allThreads.remove(currentThread());
            }
          } catch (Throwable e) {
            error.set(e);
            if (doneWaiting.isUp())
              printStackTrace(e);
          } finally {
            done.raise();
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "try {\r\n      try {\r\n        var.set(callF(r));\r\n      } finally {\r\n        ev...";
      }
    });
    beforeDelegatingToThread(t);
    try {
      startThread(t);
      evalWithTimeout_inTime.add(t);
      evalWithTimeout_allThreads.add(t);
      try {
        done.waitUntilUp(timeoutMS);
        doneWaiting.raise();
      } finally {
        evalWithTimeout_inTime.remove(t);
      }
      if (!done.isUp()) {
        print("Cancelling thread (timeout)");
        cancelAndInterruptThread(t);
        return either2(t);
      }
      if (error.get() != null)
        rethrow(error.get());
      return either1(var.get());
    } finally {
      afterDelegatingToThread(t);
    }
  }

  static public Either<Object, Thread> evalWithTimeout(double timeoutSeconds, final Object r) {
    return evalWithTimeout(toMS_int(timeoutSeconds), r);
  }

  static public <A> AutoCloseable tempSetTL(ThreadLocal<A> tl, A a) {
    return tempSetThreadLocal(tl, a);
  }

  static public void _close(AutoCloseable c) {
    if (c != null)
      try {
        c.close();
      } catch (Throwable e) {
        if (c instanceof javax.imageio.stream.ImageOutputStream)
          return;
        else
          throw rethrow(e);
      }
  }

  static public String str(Object o) {
    return o == null ? "null" : o.toString();
  }

  static public String str(char[] c) {
    return new String(c);
  }

  static public String wrapInDiv(String html, Object... __) {
    String tag = getTag(firstToken(htmlTok(html)));
    return eqicOneOf(tag, "div", "p") ? html : div(html, __);
  }

  static public String hpre_htmlencode(Object contents, Object... params) {
    return pre_htmlencode(contents, params);
  }

  public static String rtrim(String s) {
    if (s == null)
      return null;
    int i = s.length();
    while (i > 0 && " \t\r\n".indexOf(s.charAt(i - 1)) >= 0) --i;
    return i < s.length() ? s.substring(0, i) : s;
  }

  static public String hpostform(Object contents, Object... params) {
    return tag("form", contents, concatArrays(new Object[] { "method", "POST" }, params));
  }

  static public String htmlEncode_quote(Object o) {
    return htmlEncode2(quote(o));
  }

  static public String hhidden(String name, Object value, Object... params) {
    return tag("input", "", concatArrays(new Object[] { "type", "hidden", "name", name, "value", value }, params));
  }

  static public String hsubmit(String text, Object... params) {
    return tag("input", "", concatArrays(new Object[] { "type", "submit", "value", text }, params));
  }

  static public String hsubmit() {
    return hsubmit("Submit");
  }

  static public String hinputfield(String name, Object... params) {
    return htextinput(name, params);
  }

  static public String js_setRedirect() {
    return "$('input[name=redirect]').val(window.location.toString());";
  }

  static public <A extends Concept> Pair<A, Boolean> uniqCI2(Class<A> c, Object... params) {
    return uniqCI2(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> Pair<A, Boolean> uniqCI2(Concepts cc, Class<A> c, Object... params) {
    params = expandParams(c, params);
    A x = findConceptWhereCI(cc, c, params);
    if (x == null) {
      x = unlisted(c);
      csetAll(x, params);
      cc.register(x);
      return pair(x, true);
    }
    return pair(x, false);
  }

  static public void csetIfUnset(Concept c, String field, Object value) {
    if (cget(c, field) == null)
      cset(c, field, value);
  }

  static public boolean nempty(Collection c) {
    return !empty(c);
  }

  static public boolean nempty(CharSequence s) {
    return !empty(s);
  }

  static public boolean nempty(Object[] o) {
    return !empty(o);
  }

  static public boolean nempty(byte[] o) {
    return !empty(o);
  }

  static public boolean nempty(int[] o) {
    return !empty(o);
  }

  static public boolean nempty(Map m) {
    return !empty(m);
  }

  static public boolean nempty(Iterator i) {
    return i != null && i.hasNext();
  }

  static public boolean nempty(Object o) {
    return !empty(o);
  }

  static public boolean nempty(IntRange r) {
    return !empty(r);
  }

  static public String hr() {
    return tag("hr");
  }

  static public List callFAll(Collection l, Object... args) {
    return callF_all(l, args);
  }

  static public Class run(String progID, String... args) {
    Class main = hotwire(progID);
    callMain(main, args);
    return main;
  }

  static public <A> List<A> reversed(Iterable<A> l) {
    return reversedList(l);
  }

  static public <A> List<A> reversed(A[] l) {
    return reversedList(asList(l));
  }

  static public String reversed(String s) {
    return reversedString(s);
  }

  static public void sleepSeconds(double s) {
    if (s > 0)
      sleep(round(s * 1000));
  }

  static public long parseFirstLong(String s) {
    return parseLong(jextract("<int>", s));
  }

  static public int indent_default = 2;

  static public String indent(int indent) {
    return repeat(' ', indent);
  }

  static public String indent(int indent, String s) {
    return indent(repeat(' ', indent), s);
  }

  static public String indent(String indent, String s) {
    return indent + s.replace("\n", "\n" + indent);
  }

  static public String indent(String s) {
    return indent(indent_default, s);
  }

  static public List<String> indent(String indent, List<String> lines) {
    List<String> l = new ArrayList();
    if (lines != null)
      for (String s : lines) l.add(indent + s);
    return l;
  }

  static public String formatDoubleArrowMap_horizontallyAligned(Map map) {
    return formatDoubleArrowPairs_horizontallyAligned(mapToPairs(map));
  }

  static public <A> A cget(Object c, String field) {
    Object o = getOpt(c, field);
    if (o instanceof Concept.Ref)
      return (A) ((Concept.Ref) o).get();
    return (A) o;
  }

  static public <A> A cget(String field, Object c) {
    return cget(c, field);
  }

  static public String replaceAngleBracketVars_curly(String s, Map<String, String> map) {
    return replaceAngleBracketVars(s, mapValues(__48 -> curly(__48), map));
  }

  static public List<String> replaceAngleBracketVars_curly(List<String> tok, Map<String, String> map) {
    return replaceAngleBracketVars(tok, mapValues(__49 -> curly(__49), map));
  }

  static public String replaceAngleBracketVars_curly(String s, Object... params) {
    return replaceAngleBracketVars_curly(s, paramsToMap(params));
  }

  static public <A extends Concept> A conceptWhereIC(Class<A> c, Object... params) {
    return findConceptWhereCI(c, params);
  }

  static public Concept conceptWhereIC(String c, Object... params) {
    return findConceptWhereCI(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> A conceptWhereIC(Concepts concepts, Class<A> c, Object... params) {
    return findConceptWhereCI(concepts, c, params);
  }

  static public Concept conceptWhereIC(Concepts concepts, String c, Object... params) {
    return findConceptWhereCI(concepts, c, params);
  }

  static public String hinlinepostform(Object contents, Object... __) {
    return hpostform(contents, params_stylePlus(__, "display: inline"));
  }

  static public String hhiddenMulti(Object... params) {
    return mapPairsToLines(paramsToPairs(params), (k, v) -> hhidden(str(k), v));
  }

  static public String trim(String s) {
    return s == null ? null : s.trim();
  }

  static public String trim(StringBuilder buf) {
    return buf.toString().trim();
  }

  static public String trim(StringBuffer buf) {
    return buf.toString().trim();
  }

  static public Random random_random = new Random();

  static public int random(int n) {
    return random(random_random, n);
  }

  static public int random(int n, Random r) {
    return random(r, n);
  }

  static public int random(Random r, int n) {
    return n <= 0 ? 0 : r.nextInt(n);
  }

  static public double random(double max) {
    return random() * max;
  }

  static public double random() {
    return random_random.nextInt(100001) / 100000.0;
  }

  static public double random(double min, double max) {
    return min + random() * (max - min);
  }

  static public int random(int min, int max) {
    return min + random(max - min);
  }

  static public int random(int min, int max, Random r) {
    return random(r, min, max);
  }

  static public int random(Random r, int min, int max) {
    return min + random(r, max - min);
  }

  static public <A> A random(List<A> l) {
    return oneOf(l);
  }

  static public <A> A random(Collection<A> c) {
    if (c instanceof List)
      return random((List<A>) c);
    int i = random(l(c));
    return collectionGet(c, i);
  }

  static public int random(IntRange r) {
    return random(r.start, r.end);
  }

  static public String htmlEncode2(String s) {
    return htmlencode_noQuotes(s);
  }

  static public <A> MultiMap<String, A> ciMultiMap() {
    return caseInsensitiveMultiMap();
  }

  static public List<String> uniquifyCI(Collection<String> l) {
    TreeSet<String> set = ciSet();
    List<String> out = new ArrayList();
    for (String a : unnull(l)) if (set.add(a))
      out.add(a);
    return out;
  }

  static public <A, B> Collection<B> values(Map<A, B> map) {
    return map == null ? emptyList() : map.values();
  }

  static public Collection values(Object map) {
    return values((Map) map);
  }

  static public <A, B> Collection<B> values(MultiMap<A, B> mm) {
    return mm == null ? emptyList() : concatLists(values(mm.data));
  }

  static public <A> List<A> concatLists(Iterable<A>... lists) {
    List<A> l = new ArrayList();
    if (lists != null)
      for (Iterable<A> list : lists) addAll(l, list);
    return l;
  }

  static public <A> List<A> concatLists(Collection<? extends Iterable<A>> lists) {
    List<A> l = new ArrayList();
    if (lists != null)
      for (Iterable<A> list : lists) addAll(l, list);
    return l;
  }

  static public <A extends Concept> Collection<A> conceptsWhereCI(Class<A> c, Object... params) {
    return findConceptsWhereCI(c, params);
  }

  static public Collection<Concept> conceptsWhereCI(String c, Object... params) {
    return findConceptsWhereCI(c, params);
  }

  static public <A extends Concept> Collection<A> conceptsWhereCI(Concepts concepts, Class<A> c, Object... params) {
    return findConceptsWhereCI(concepts, c, params);
  }

  static public List<Concept> conceptsWhereCI(Concepts concepts, String c, Object... params) {
    return findConceptsWhereCI(concepts, c, params);
  }

  static public Map mapValues(Object func, Map map) {
    Map m = similarEmptyMap(map);
    for (Object key : keys(map)) m.put(key, callF(func, map.get(key)));
    return m;
  }

  static public <A, B, C> Map<A, C> mapValues(Map<A, B> map, IF1<B, C> f) {
    return mapValues(f, map);
  }

  static public <A, B, C> Map<A, C> mapValues(IF1<B, C> f, Map<A, B> map) {
    return mapValues((Object) f, map);
  }

  static public Map mapValues(Map map, Object func) {
    return mapValues(func, map);
  }

  static public String uncurly(String s) {
    return tok_unCurlyBracket(s);
  }

  static public boolean neq(Object a, Object b) {
    return !eq(a, b);
  }

  static public <A extends Concept> A conceptWhereCI(Class<A> c, Object... params) {
    return findConceptWhereCI(c, params);
  }

  static public Concept conceptWhereCI(String c, Object... params) {
    return findConceptWhereCI(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> A conceptWhereCI(Concepts concepts, Class<A> c, Object... params) {
    return findConceptWhereCI(concepts, c, params);
  }

  static public Concept conceptWhereCI(Concepts concepts, String c, Object... params) {
    return findConceptWhereCI(concepts, c, params);
  }

  static public String joinWithSpace(Iterable c) {
    return join(" ", c);
  }

  static public String joinWithSpace(String... c) {
    return join(" ", c);
  }

  static public String firstToUpper(String s) {
    if (empty(s))
      return s;
    return Character.toUpperCase(s.charAt(0)) + s.substring(1);
  }

  static public String simpleSpacesTrim_javaTok(String s) {
    return trim(simpleSpaces_javaTok(s));
  }

  static public String angleBracketVarsToStars(String s) {
    return angleBracketVarsToStars(s, null);
  }

  static public String angleBracketVarsToStars(String s, List<String> varNames_out) {
    List<String> tok = javaTokWithAngleBrackets(s);
    for (int idx : indicesOfAngleBracketVars(tok)) {
      {
        if (varNames_out != null)
          varNames_out.add(deAngleBracket(tok.get(idx)));
      }
      tok.set(idx, "*");
    }
    return join(tok);
  }

  static volatile public StringBuffer local_log = new StringBuffer();

  static volatile public Appendable print_log = local_log;

  static volatile public int print_log_max = 1024 * 1024;

  static volatile public int local_log_max = 100 * 1024;

  static public boolean print_silent = false;

  static public Object print_byThread_lock = new Object();

  static volatile public ThreadLocal<Object> print_byThread;

  static volatile public Object print_allThreads;

  static volatile public Object print_preprocess;

  static public void print() {
    print("");
  }

  static public <A> A print(String s, A o) {
    print((endsWithLetterOrDigit(s) ? s + ": " : s) + o);
    return o;
  }

  static public <A> A print(A o) {
    ping_okInCleanUp();
    if (print_silent)
      return o;
    String s = o + "\n";
    print_noNewLine(s);
    return o;
  }

  static public void print_noNewLine(String s) {
    try {
      Object f = getThreadLocal(print_byThread_dontCreate());
      if (f == null)
        f = print_allThreads;
      if (f != null)
        if (isFalse(f instanceof F1 ? ((F1) f).get(s) : callF(f, s)))
          return;
    } catch (Throwable e) {
      System.out.println(getStackTrace(e));
    }
    print_raw(s);
  }

  static public void print_raw(String s) {
    if (print_preprocess != null)
      s = (String) callF(print_preprocess, s);
    s = fixNewLines(s);
    Appendable loc = local_log;
    Appendable buf = print_log;
    int loc_max = print_log_max;
    if (buf != loc && buf != null) {
      print_append(buf, s, print_log_max);
      loc_max = local_log_max;
    }
    if (loc != null)
      print_append(loc, s, loc_max);
    System.out.print(s);
    vmBus_send("printed", mc(), s);
  }

  static public void print_autoRotate() {
  }

  static public <A extends Concept> A uniqCI(Class<A> c, Object... params) {
    return uniqueConcept(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> A uniqCI(Concepts cc, Class<A> c, Object... params) {
    AutoCloseable __1 = tempDBLock(cc);
    try {
      params = expandParams(c, params);
      A x = findConceptWhereCI(cc, c, params);
      if (x == null) {
        x = unlisted(c);
        csetAll(x, params);
        cc.register(x);
      }
      return x;
    } finally {
      _close(__1);
    }
  }

  static public void tt() {
    typeWriterConsole();
  }

  static public String tt(Object contents, Object... params) {
    return tag("tt", contents, params);
  }

  static public String targetBlank(String link, Object contents, Object... params) {
    return hrefBlank(link, contents, params);
  }

  static public String addParamsToURL(String url, Map params) {
    return appendQueryToURL(url, params);
  }

  static public String addParamsToURL(String url, Object... data) {
    return appendQueryToURL(url, data);
  }

  static public Long conceptIDOrNull(Concept c) {
    return c == null ? null : c.id;
  }

  static public String firstToLower(String s) {
    if (empty(s))
      return s;
    return Character.toLowerCase(s.charAt(0)) + s.substring(1);
  }

  static public int countTokens(String s) {
    return l(javaTokC(s));
  }

  static public int countTokens(List<String> tok) {
    return l(tok) / 2;
  }

  static public List<String> dropPunctuation_keep = ll("*", "<", ">");

  static public List<String> dropPunctuation(List<String> tok) {
    tok = new ArrayList<String>(tok);
    for (int i = 1; i < tok.size(); i += 2) {
      String t = tok.get(i);
      if (t.length() == 1 && !Character.isLetter(t.charAt(0)) && !Character.isDigit(t.charAt(0)) && !dropPunctuation_keep.contains(t)) {
        tok.set(i - 1, tok.get(i - 1) + tok.get(i + 1));
        tok.remove(i);
        tok.remove(i);
        i -= 2;
      }
    }
    return tok;
  }

  static public String dropPunctuation(String s) {
    return join(dropPunctuation(nlTok(s)));
  }

  static public List<String> sortedIC(Collection<String> l) {
    return sortedIgnoreCase(l);
  }

  static public Set<String> gazelle_allSyntacticPatternsFromInput(String input) {
    Chain<String> tokens = toChain(javaTokC(input));
    LinkedHashSet<String> out = new LinkedHashSet();
    gazelle_allSyntacticPatternsFromInput_collect(null, tokens, out);
    return out;
  }

  static public void gazelle_allSyntacticPatternsFromInput_collect(ReverseChain<String> prefix, Chain<String> tokens, Set<String> out) {
    ping();
    if (empty(tokens)) {
      out.add(joinWithSpace(asList(prefix)));
      return;
    }
    gazelle_allSyntacticPatternsFromInput_collect(chainPlus(prefix, first(tokens)), dropFirst(tokens), out);
    if (!eq(last(prefix), "*")) {
      ReverseChain<String> prefix2 = chainPlus(prefix, "*");
      Chain<String> tokens2 = tokens;
      while (!empty(tokens2)) {
        tokens2 = dropFirst(tokens2);
        gazelle_allSyntacticPatternsFromInput_collect(prefix2, tokens2, out);
      }
    }
  }

  static public <A, B> Set<Map.Entry<A, B>> _entrySet(Map<A, B> map) {
    return map == null ? Collections.EMPTY_SET : map.entrySet();
  }

  static public String htmlTable2_noHtmlEncode(Object data, Object... __) {
    return htmlTable2(data, paramsPlus(__, "htmlEncode", false));
  }

  static public boolean isIdentifier(String s) {
    return isJavaIdentifier(s);
  }

  static public boolean isSafeStandardFunction(String name) {
    return isCodeSafe(formatFunctionCall(name));
  }

  static public Class loadFunction_cached(String function) {
    return loadFunctions_cached(function);
  }

  static public <A> A evalWithTimeoutOrFail(int timeoutMS, F0<A> f) {
    return evalWithTimeoutOrException(timeoutMS, f);
  }

  static public <A> A evalWithTimeoutOrFail(double timeoutSeconds, F0<A> f) {
    return evalWithTimeoutOrException(timeoutSeconds, f);
  }

  static public <A> A evalWithTimeoutOrFail(int timeoutMS, IF0<A> f) {
    return evalWithTimeoutOrException(timeoutMS, f);
  }

  static public <A> A evalWithTimeoutOrFail(double timeoutSeconds, IF0<A> f) {
    return evalWithTimeoutOrException(timeoutSeconds, f);
  }

  static public void evalWithTimeoutOrFail(int timeoutMS, Runnable r) {
    evalWithTimeoutOrException(timeoutMS, runnableToF0(r));
  }

  static public void evalWithTimeoutOrFail(double timeoutSeconds, Runnable r) {
    evalWithTimeoutOrException(timeoutSeconds, runnableToF0(r));
  }

  static public Object callF(Object f, Object... args) {
    try {
      if (f instanceof String)
        return callMC((String) f, args);
      return x30_util.callF(f, args);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A callF(F0<A> f) {
    return f == null ? null : f.get();
  }

  static public <A> A callF(IF0<A> f) {
    return f == null ? null : f.get();
  }

  static public <A, B> B callF(F1<A, B> f, A a) {
    return f == null ? null : f.get(a);
  }

  static public <A, B> B callF(IF1<A, B> f, A a) {
    return f == null ? null : f.get(a);
  }

  static public <A, B, C> C callF(F2<A, B, C> f, A a, B b) {
    return f == null ? null : f.get(a, b);
  }

  static public <A> void callF(VF1<A> f, A a) {
    if (f != null)
      f.get(a);
  }

  static public Object callMC(String method, Object... args) {
    return call(mc(), method, args);
  }

  static public Object call(Object o) {
    return callF(o);
  }

  static public Object call(Object o, String method, Object... args) {
    return call_withVarargs(o, method, args);
  }

  static public boolean isStringCollection(Object o) {
    if (!(o instanceof Collection))
      return false;
    Collection l = (Collection) o;
    for (Object x : l) if (!(x instanceof String))
      return false;
    return true;
  }

  static public <A> ArrayList<A> asList(A[] a) {
    return a == null ? new ArrayList<A>() : new ArrayList<A>(Arrays.asList(a));
  }

  static public ArrayList<Integer> asList(int[] a) {
    if (a == null)
      return null;
    ArrayList<Integer> l = emptyList(a.length);
    for (int i : a) l.add(i);
    return l;
  }

  static public ArrayList<Long> asList(long[] a) {
    if (a == null)
      return null;
    ArrayList<Long> l = emptyList(a.length);
    for (long i : a) l.add(i);
    return l;
  }

  static public ArrayList<Float> asList(float[] a) {
    if (a == null)
      return null;
    ArrayList<Float> l = emptyList(a.length);
    for (float i : a) l.add(i);
    return l;
  }

  static public ArrayList<Double> asList(double[] a) {
    if (a == null)
      return null;
    ArrayList<Double> l = emptyList(a.length);
    for (double i : a) l.add(i);
    return l;
  }

  static public <A> ArrayList<A> asList(Iterable<A> s) {
    if (s instanceof ArrayList)
      return (ArrayList) s;
    ArrayList l = new ArrayList();
    if (s != null)
      for (A a : s) l.add(a);
    return l;
  }

  static public <A> ArrayList<A> asList(Producer<A> p) {
    ArrayList l = new ArrayList();
    A a;
    if (p != null)
      while ((a = p.next()) != null) l.add(a);
    return l;
  }

  static public <A> ArrayList<A> asList(Enumeration<A> e) {
    ArrayList l = new ArrayList();
    if (e != null)
      while (e.hasMoreElements()) l.add(e.nextElement());
    return l;
  }

  static public <A> ArrayList<A> asList(ReverseChain<A> c) {
    return c == null ? emptyList() : c.toList();
  }

  static public boolean isStringList(Object o) {
    if (!(o instanceof List))
      return false;
    List l = (List) o;
    for (Object x : l) if (!(x instanceof String))
      return false;
    return true;
  }

  static public String appendRoundBracketed(String b) {
    return empty(b) ? "" : "" + " (" + b + ")";
  }

  static public String appendRoundBracketed(String a, String b) {
    return empty(b) ? a : a + appendRoundBracketed(b);
  }

  static public String className(Object o) {
    return getClassName(o);
  }

  static public int shorten_default = 100;

  static public String shorten(CharSequence s) {
    return shorten(s, shorten_default);
  }

  static public String shorten(CharSequence s, int max) {
    return shorten(s, max, "...");
  }

  static public String shorten(CharSequence s, int max, String shortener) {
    if (s == null)
      return "";
    if (max < 0)
      return str(s);
    return s.length() <= max ? str(s) : subCharSequence(s, 0, min(s.length(), max - l(shortener))) + shortener;
  }

  static public String shorten(int max, CharSequence s) {
    return shorten(s, max);
  }

  static public String getStackTrace(Throwable throwable) {
    lastException(throwable);
    return getStackTrace_noRecord(throwable);
  }

  static public String getStackTrace_noRecord(Throwable throwable) {
    StringWriter writer = new StringWriter();
    throwable.printStackTrace(new PrintWriter(writer));
    return hideCredentials(writer.toString());
  }

  static public String getStackTrace() {
    return getStackTrace_noRecord(new Throwable());
  }

  static volatile public PersistableThrowable _handleException_lastException;

  static public List _handleException_onException = synchroList(ll("printStackTrace2"));

  static public void _handleException(Throwable e) {
    _handleException_lastException = persistableThrowable(e);
    Throwable e2 = innerException(e);
    if (e2.getClass() == RuntimeException.class && eq(e2.getMessage(), "Thread cancelled.") || e2 instanceof InterruptedException)
      return;
    for (Object f : cloneList(_handleException_onException)) try {
      callF(f, e);
    } catch (Throwable e3) {
      try {
        printStackTrace2(e3);
      } catch (Throwable e4) {
        System.out.println(getStackTrace(e3));
        System.out.println(getStackTrace(e4));
      }
    }
  }

  static public long parseSecondLong(String s) {
    List<String> tok = javaTokC(s);
    int i = 0;
    while (i < l(tok) && !isInteger(tok.get(i))) ++i;
    ++i;
    while (i < l(tok) && !isInteger(tok.get(i))) ++i;
    if (i < l(tok))
      return parseLong(tok.get(i));
    return 0;
  }

  static public <A extends Concept> Collection<Pair<A, FieldIndicator>> cForwardAndBackRefsWithFieldIndicator(Concept c, Class<A> type) {
    return concatLists_conservative(mapPairsB(cForwardRefsWithFieldNames(c, type), f -> new FieldIndicator(f, true)), mapPairsB(findBackRefsWithFieldNames(c, type), f -> new FieldIndicator(f, false)));
  }

  static public <A extends Concept> Collection<Pair<A, FieldIndicator>> cForwardAndBackRefsWithFieldIndicator(Class<A> type, Concept c) {
    return cForwardAndBackRefsWithFieldIndicator(c, type);
  }

  static public String ol(String... list) {
    return ol(asList(list));
  }

  static public String ol(List<String> list, Object... params) {
    StringBuilder buf = new StringBuilder();
    int i = indexOf(params, null);
    if (i == -1)
      i = l(params);
    for (String s : withoutNulls(list)) buf.append(tag("li", s, subArray(params, i + 1))).append("\n");
    return containerTag("ol", buf, subArray(params, 0, i)) + "\n";
  }

  static public List map(Iterable l, Object f) {
    return map(f, l);
  }

  static public List map(Object f, Iterable l) {
    List x = emptyList(l);
    if (l != null)
      for (Object o : l) x.add(callF(f, o));
    return x;
  }

  static public <A, B> List<B> map(Iterable<A> l, F1<A, B> f) {
    return map(f, l);
  }

  static public <A, B> List<B> map(F1<A, B> f, Iterable<A> l) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) x.add(callF(f, o));
    return x;
  }

  static public <A, B> List<B> map(IF1<A, B> f, Iterable<A> l) {
    return map(l, f);
  }

  static public <A, B> List<B> map(Iterable<A> l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) x.add(f.get(o));
    return x;
  }

  static public <A, B> List<B> map(IF1<A, B> f, A[] l) {
    return map(l, f);
  }

  static public <A, B> List<B> map(A[] l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) x.add(f.get(o));
    return x;
  }

  static public List map(Object f, Object[] l) {
    return map(f, asList(l));
  }

  static public List map(Object[] l, Object f) {
    return map(f, l);
  }

  static public List map(Object f, Map map) {
    return map(map, f);
  }

  static public List map(Map map, Object f) {
    List x = new ArrayList();
    if (map != null)
      for (Object _e : map.entrySet()) {
        Map.Entry e = (Map.Entry) _e;
        x.add(callF(f, e.getKey(), e.getValue()));
      }
    return x;
  }

  static public <A, B, C> List<C> map(Map<A, B> map, IF2<A, B, C> f) {
    return map(map, (Object) f);
  }

  static public <A> A ifThenElse(boolean b, A trueValue, A falseValue) {
    return b ? trueValue : falseValue;
  }

  static public String joinNemptiesWithSpace(String... strings) {
    return joinNempties(" ", strings);
  }

  static public String joinNemptiesWithSpace(Collection<String> strings) {
    return joinNempties(" ", strings);
  }

  static public String strOrEmpty(Object o) {
    return o == null ? "" : str(o);
  }

  static public int countWordsWithoutAngleBracketedAndStars(String s) {
    int n = 0;
    for (String t : javaTokWithAllPlusAngleBracketsC(s)) if (!isAngleBracketed(t) && !eq(t, "*"))
      ++n;
    return n;
  }

  static public <A> List<A> sortedByCalculatedFieldDesc(Collection<A> c, final Object f) {
    return sortByCalculatedFieldDesc(c, f);
  }

  static public <A> List<A> sortedByCalculatedFieldDesc(Object f, Collection<A> c) {
    return sortByCalculatedFieldDesc(f, c);
  }

  static public <A, B> List<A> sortedByCalculatedFieldDesc(Iterable<A> c, IF1<A, B> f) {
    return sortByCalculatedFieldDesc(c, f);
  }

  static public <A, B> List<A> sortedByCalculatedFieldDesc(IF1<A, B> f, Iterable<A> c) {
    return sortByCalculatedFieldDesc(f, c);
  }

  static public boolean match3_withIntsAndIDs(String pat, String s) {
    return match3_withIntsAndIDs(pat, s, null);
  }

  static public boolean match3_withIntsAndIDs(String pat, String s, Matches m) {
    List<String> tokPat = javaTokWithAllPlusAngleBrackets(pat);
    String pat2 = joinMap(tokPat, t -> eqOneOf(t, "<int>", "<id>") ? "*" : t);
    Matches m2 = m == null ? new Matches() : m;
    if (!match3(pat2, s, m2))
      return false;
    List<String> vars = filter(codeTokens(tokPat), t -> eqOneOf(t, "<int>", "<id>", "*"));
    for (int i = 0; i < l(vars); i++) {
      if (eq(vars.get(i), "<int>") && !isInteger(m2.get(i)) || eq(vars.get(i), "<id>") && !isIdentifier(m2.get(i)))
        return false;
    }
    return true;
  }

  static public <A> List<A> instancesOf(Iterable i, Class<A> c) {
    return collectInstances(i, c);
  }

  static public <A> List<A> instancesOf(Class<A> c, Iterable i) {
    return collectInstances(c, i);
  }

  static public <A> List<A> ll(A... a) {
    ArrayList l = new ArrayList(a.length);
    if (a != null)
      for (A x : a) l.add(x);
    return l;
  }

  static public String shortClassName(Object o) {
    if (o == null)
      return null;
    Class c = o instanceof Class ? (Class) o : o.getClass();
    String name = c.getName();
    return shortenClassName(name);
  }

  static public int boostHashCombine(int a, int b) {
    return a ^ (b + 0x9e3779b9 + (a << 6) + (a >> 2));
  }

  static public int _hashCode(Object a) {
    return a == null ? 0 : a.hashCode();
  }

  static public <A> Set<A> weakSet() {
    return synchroWeakHashSet();
  }

  static public <A extends Concept> List<A> list(Class<A> type) {
    return db_mainConcepts().list(type);
  }

  static public <A extends Concept> List<A> list(Concepts concepts, Class<A> type) {
    return concepts.list(type);
  }

  static public List<Concept> list(String type) {
    return db_mainConcepts().list(type);
  }

  static public List<Concept> list(Concepts concepts, String type) {
    return concepts.list(type);
  }

  static public <A extends Concept> void onIndividualConceptChange_notOnAllChanged(Class<A> type, IVF1<A> r) {
    onIndividualConceptChange_notOnAllChanged(db_mainConcepts(), type, r);
  }

  static public <A extends Concept> void onIndividualConceptChange_notOnAllChanged(Concepts cc, Class<A> type, IVF1<A> r) {
    if (r != null) {
      if (cc != null)
        cc.addConceptIndex(new IConceptIndex() {

          public void update(Concept c) {
            if (instanceOf(c, type))
              r.get((A) c);
          }

          public void remove(Concept c) {
          }
        });
    }
  }

  static public Q dm_startQ() {
    return dm_ownQ(startQ());
  }

  static public Q dm_startQ(String name) {
    return dm_ownQ(startQ(name));
  }

  static public FixedRateTimer dm_doEvery(long delay, final Object r) {
    return dm_ownTimer(doEvery(delay, delay, r));
  }

  static public FixedRateTimer dm_doEvery(long delay, long firstDelay, final Object r) {
    return dm_ownTimer(doEvery(delay, firstDelay, r));
  }

  static public FixedRateTimer dm_doEvery(double initialSeconds, double delaySeconds, final Object r) {
    return dm_ownTimer(doEvery(initialSeconds, delaySeconds, r));
  }

  static public FixedRateTimer dm_doEvery(double delaySeconds, final Object r) {
    return dm_ownTimer(doEvery(delaySeconds, r));
  }

  static public void indexConceptFieldDesc(Class<? extends Concept> c, String field) {
    indexConceptFieldDesc(db_mainConcepts(), c, field);
  }

  static public void indexConceptFieldDesc(Concepts concepts, Class<? extends Concept> c, String field) {
    if (!isConceptFieldIndexed(concepts, c, field))
      new ConceptFieldIndexDesc(concepts, c, field);
  }

  static public <A extends Concept> ConceptFieldIndexCI<A> indexConceptFieldIC(Class<A> c, String field) {
    return indexConceptFieldCI(c, field);
  }

  static public <A extends Concept> ConceptFieldIndexCI<A> indexConceptFieldIC(Concepts concepts, Class<A> c, String field) {
    return indexConceptFieldCI(concepts, c, field);
  }

  static public void indexConceptField(Class<? extends Concept> c, String field) {
    indexConceptField(db_mainConcepts(), c, field);
  }

  static public void indexConceptField(Concepts concepts, Class<? extends Concept> c, String field) {
    if (!isConceptFieldIndexed(concepts, c, field))
      new ConceptFieldIndex(concepts, c, field);
  }

  static public <A> List<A> listPlus(Collection<A> l, A... more) {
    return concatLists(l, asList(more));
  }

  static public String h1(String s, Object... params) {
    return hfulltag("h1", s, params);
  }

  static public long toLong(Object o) {
    if (o instanceof Number)
      return ((Number) o).longValue();
    if (o instanceof String)
      return parseLong((String) o);
    return 0;
  }

  static public TreeSet<String> litciset(String... items) {
    TreeSet<String> set = caseInsensitiveSet();
    for (String a : items) set.add(a);
    return set;
  }

  static public boolean all(Object pred, Iterable l) {
    if (l != null)
      for (Object o : l) if (!isTrue(callF(pred, o)))
        return false;
    return true;
  }

  static public <A> boolean all(Iterable<A> l, IF1<A, Boolean> f) {
    if (l != null)
      for (A a : l) if (!f.get(a))
        return false;
    return true;
  }

  static public <A> boolean all(IF1<A, Boolean> f, Iterable<A> l) {
    return all(l, f);
  }

  static public <A extends Concept> List<A> findBackRefs(Collection<? extends Concept> concepts, Class<A> type) {
    IdentityHashMap<A, Boolean> l = new IdentityHashMap();
    for (Concept c : concepts) if (c.backRefs != null)
      for (Concept.Ref r : c.backRefs) if (instanceOf(r.concept(), type))
        l.put((A) r.concept(), true);
    return asList(keys(l));
  }

  static public <A extends Concept> List<A> findBackRefs(Concept c, Class<A> type) {
    IdentityHashMap<A, Boolean> l = new IdentityHashMap();
    if (c != null && c.backRefs != null)
      for (Concept.Ref r : c.backRefs) if (instanceOf(r.concept(), type))
        l.put((A) r.concept(), true);
    return asList(keys(l));
  }

  static public <A extends Concept> List<A> findBackRefs(Class<A> type, Concept c) {
    return findBackRefs(c, type);
  }

  static public Collection<Concept> findBackRefs(Concept c) {
    return findBackRefs(c, Concept.class);
  }

  static public boolean contains(Collection c, Object o) {
    return c != null && c.contains(o);
  }

  static public boolean contains(Object[] x, Object o) {
    if (x != null)
      for (Object a : x) if (eq(a, o))
        return true;
    return false;
  }

  static public boolean contains(String s, char c) {
    return s != null && s.indexOf(c) >= 0;
  }

  static public boolean contains(String s, String b) {
    return s != null && s.indexOf(b) >= 0;
  }

  static public boolean contains(BitSet bs, int i) {
    return bs != null && bs.get(i);
  }

  static public <A> boolean contains(Producer<A> p, A a) {
    if (p != null && a != null)
      while (true) {
        A x = p.next();
        if (x == null)
          break;
        if (eq(x, a))
          return true;
      }
    return false;
  }

  static public void deleteConcepts(Collection conceptsOrIDs) {
    db_mainConcepts().deleteConcepts(asList(conceptsOrIDs));
  }

  static public <A extends Concept> List<A> deleteConcepts(Class<A> c, Object... params) {
    return deleteConcepts(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> List<A> deleteConcepts(Concepts cc, Class<A> c, Object... params) {
    List<A> l = asList(findConceptsWhere(cc, c, params));
    deleteConcepts(l);
    return l;
  }

  static public <A extends Concept> void deleteConcepts(Class<A> c, IF1<A, Boolean> pred) {
    deleteConcepts(db_mainConcepts(), c, pred);
  }

  static public <A extends Concept> void deleteConcepts(Concepts cc, Class<A> c, IF1<A, Boolean> pred) {
    deleteConcepts(filter(list(cc, c), pred));
  }

  static public List<Concept> deleteConcepts(Concepts cc) {
    return deleteConcepts(cc, Concept.class);
  }

  static public <A> List<A> filter(Iterable<A> c, Object pred) {
    if (pred instanceof F1)
      return filter(c, (F1<A, Boolean>) pred);
    List x = new ArrayList();
    if (c != null)
      for (Object o : c) if (isTrue(callF(pred, o)))
        x.add(o);
    return x;
  }

  static public List filter(Object pred, Iterable c) {
    return filter(c, pred);
  }

  static public <A, B extends A> List<B> filter(Iterable<B> c, F1<A, Boolean> pred) {
    List x = new ArrayList();
    if (c != null)
      for (B o : c) if (pred.get(o))
        x.add(o);
    return x;
  }

  static public <A, B extends A> List<B> filter(F1<A, Boolean> pred, Iterable<B> c) {
    return filter(c, pred);
  }

  static public <A, B extends A> List<B> filter(Iterable<B> c, IF1<A, Boolean> pred) {
    List x = new ArrayList();
    if (c != null)
      for (B o : c) if (pred.get(o))
        x.add(o);
    return x;
  }

  static public <A, B extends A> List<B> filter(B[] c, IF1<A, Boolean> pred) {
    List x = new ArrayList();
    if (c != null)
      for (B o : c) if (pred.get(o))
        x.add(o);
    return x;
  }

  static public <A, B extends A> List<B> filter(IF1<A, Boolean> pred, Iterable<B> c) {
    return filter(c, pred);
  }

  static public <A extends Concept> List<A> cdelete(Class<A> c, Object... params) {
    return deleteConcepts(c, params);
  }

  static public void cdelete(Concept c) {
    deleteConcept(c);
  }

  static public <A extends Concept> void cdelete(Collection<A> c) {
    for (A a : cloneList(c)) cdelete(a);
  }

  static public <A> HashSet<A> litset(A... items) {
    return lithashset(items);
  }

  static public String getStringOpt(Map map, Object key) {
    return map == null ? null : optCast(String.class, map.get(key));
  }

  static public String getStringOpt(List l, int idx) {
    return optCast(String.class, get(l, idx));
  }

  static public String getStringOpt(Object o, Object key) {
    if (o instanceof Map)
      return getStringOpt((Map) o, key);
    if (key instanceof String)
      return optCast(String.class, getOpt(o, (String) key));
    throw fail("Not a string key: " + getClassName(key));
  }

  static public String getStringOpt(String key, Object o) {
    return getStringOpt(o, (Object) key);
  }

  static public String appendParamsToURL(String url, Map params) {
    return appendQueryToURL(url, params);
  }

  static public String appendParamsToURL(String url, Object... data) {
    return appendQueryToURL(url, data);
  }

  static public String beforeVerticalBar(String s) {
    return trimSubstring(s, 0, smartIndexOf(s, '|'));
  }

  static public JavaScript hjs_copyToClipboard() {
    return new JavaScript("\r\n    const copyToClipboard = str => {\r\n      const el = document.createElement('textarea');\r\n      el.value = str;\r\n      el.setAttribute('readonly', '');\r\n      el.style.position = 'absolute';\r\n      el.style.left = '-9999px';\r\n      document.body.appendChild(el);\r\n      const selected =\r\n        document.getSelection().rangeCount > 0 ? document.getSelection().getRangeAt(0) : false;\r\n      el.select();\r\n      document.execCommand('copy');\r\n      document.body.removeChild(el);\r\n      if (selected) {\r\n        document.getSelection().removeAllRanges();\r\n        document.getSelection().addRange(selected);\r\n      }\r\n    };\r\n  ");
  }

  static public String ahref_onClick(String js, Object contents, Object... params) {
    return ahref_js(js, contents, params);
  }

  static public String formatFunctionCall(String fname, Object... args) {
    return fname + "(" + joinWithComma(allToString(args)) + ")";
  }

  static public String copyToClipboard(String text) {
    return copyTextToClipboard(text);
  }

  static public <A extends Image> A copyToClipboard(A image) {
    copyImageToClipboard(image);
    return image;
  }

  static public File copyToClipboard(File f) {
    return copyFileToClipboard(f);
  }

  static public String jsQuote(String s) {
    return javascriptQuote(s);
  }

  static public String joinNemptiesWithVBar(String... strings) {
    return joinNempties(" | ", strings);
  }

  static public String joinNemptiesWithVBar(Collection<String> strings) {
    return joinNempties(" | ", strings);
  }

  static public String hPopDownButton(String... entries) {
    String id = "dropdown-" + aGlobalID(), outerID = "outer-" + id;
    return hstyle(replaceDollarVars("\r\n    #$id ul {\r\n      list-style-type: none;\r\n      margin: 0;\r\n      padding: 0;\r\n      width: 200px;\r\n      background-color: #f1f1f1;\r\n    }\r\n    \r\n    #$id {\r\n      position: absolute;\r\n      display:none;\r\n      background-color: #f9f9f9;\r\n      width:auto;\r\n      height:200px;\r\n      overflow: auto;\r\n     \r\n      min-width: 160px;\r\n      box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);\r\n      \r\n      z-index: 99;\r\n      \r\n    }\r\n    \r\n    #$id li a {\r\n      display: block;\r\n      border-bottom: 1px solid #555;\r\n      color: #000;\r\n      padding: 8px 16px;\r\n      text-decoration: none;\r\n    }\r\n    \r\n    #$id li a:hover {\r\n      background-color: #3399ff;\r\n      color: white;\r\n    }  \r\n  ", "$id", id)) + hdiv(htmlEncode2(unicode_smallDownPointingTriangle()) + hdiv(ul(entries), "id", id), "style", "position: relative; display: inline-block; cursor: context-menu", "onclick", replaceDollarVars("\r\n      var x = document.getElementById($id);\r\n      x.style.display = window.getComputedStyle(x).display === \"none\" ? \"block\" : \"none\";\r\n    ", "$id", jsQuote(id)), "id", outerID) + hscript(replaceDollarVars("\r\n      if (typeof $ !== 'undefined')\r\n        $('body').click(function(e) {\r\n          if (!$(e.target).closest('#$outerID').length) {\r\n            $(\"#$id\").hide();\r\n          }\r\n        });\r\n    ", "id", id, "outerID", outerID));
  }

  static public String hPopDownButton(Collection<String> entries) {
    return hPopDownButton(toStringArray(entries));
  }

  static public <A> List<A> objectsWhereCI(Collection<A> c, Object... data) {
    return objectsWhereIC(c, data);
  }

  static public String hparagraphs(Collection<String> l) {
    return lines(lambdaMap(__50 -> p(__50), l));
  }

  static public <A, B> List<B> lmap(IF1<A, B> f, Iterable<A> l) {
    return lambdaMap(f, l);
  }

  static public <A, B> List<B> lmap(IF1<A, B> f, A[] l) {
    return lambdaMap(f, l);
  }

  static public <A> List<A> takeFirst(List<A> l, int n) {
    return l(l) <= n ? l : newSubListOrSame(l, 0, n);
  }

  static public <A> List<A> takeFirst(int n, List<A> l) {
    return takeFirst(l, n);
  }

  static public String takeFirst(int n, String s) {
    return substring(s, 0, n);
  }

  static public String takeFirst(String s, int n) {
    return substring(s, 0, n);
  }

  static public CharSequence takeFirst(int n, CharSequence s) {
    return subCharSequence(s, 0, n);
  }

  static public <A> List<A> takeFirst(int n, Iterable<A> i) {
    if (i == null)
      return null;
    List l = new ArrayList();
    Iterator<A> it = i.iterator();
    for (int _repeat_0 = 0; _repeat_0 < n; _repeat_0++) {
      if (it.hasNext())
        l.add(it.next());
      else
        break;
    }
    return l;
  }

  static public int[] takeFirst(int n, int[] a) {
    return takeFirstOfIntArray(n, a);
  }

  static public String javaValueToHTML(Object value) {
    return javaValueToHTML(value, identityHashSet());
  }

  static public String javaValueToHTML(Object value, Set seen) {
    if (!seen.add(value))
      return "see above";
    if (value instanceof String)
      return htmlEncode_quote(((String) value));
    else if (value instanceof List)
      return ol(map(((List) value), v -> javaValueToHTML(v, seen)));
    else
      return htmlEncode(shorten(str(value)));
  }

  static public String htextfield(String name, Object... params) {
    return htextinput(name, params);
  }

  static public String span(Object contents, Object... params) {
    return hfulltag("span", contents, params);
  }

  static public String span() {
    return span("");
  }

  static public Object[] litobjectarray(Object... l) {
    return litObjectArray(l);
  }

  static public <A, B> Map<A, B> cloneMap(Map<A, B> map) {
    if (map == null)
      return new HashMap();
    synchronized (map) {
      return map instanceof TreeMap ? new TreeMap((TreeMap) map) : map instanceof LinkedHashMap ? new LinkedHashMap(map) : new HashMap(map);
    }
  }

  static public <A, B> List<B> cloneMap(Iterable<A> l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : cloneList(l)) x.add(f.get(o));
    return x;
  }

  static public int max(int a, int b) {
    return Math.max(a, b);
  }

  static public int max(int a, int b, int c) {
    return max(max(a, b), c);
  }

  static public long max(int a, long b) {
    return Math.max((long) a, b);
  }

  static public long max(long a, long b) {
    return Math.max(a, b);
  }

  static public double max(int a, double b) {
    return Math.max((double) a, b);
  }

  static public float max(float a, float b) {
    return Math.max(a, b);
  }

  static public double max(double a, double b) {
    return Math.max(a, b);
  }

  static public int max(Collection<Integer> c) {
    int x = Integer.MIN_VALUE;
    for (int i : c) x = max(x, i);
    return x;
  }

  static public double max(double[] c) {
    if (c.length == 0)
      return Double.MIN_VALUE;
    double x = c[0];
    for (int i = 1; i < c.length; i++) x = Math.max(x, c[i]);
    return x;
  }

  static public float max(float[] c) {
    if (c.length == 0)
      return Float.MAX_VALUE;
    float x = c[0];
    for (int i = 1; i < c.length; i++) x = Math.max(x, c[i]);
    return x;
  }

  static public byte max(byte[] c) {
    byte x = -128;
    for (byte d : c) if (d > x)
      x = d;
    return x;
  }

  static public short max(short[] c) {
    short x = -0x8000;
    for (short d : c) if (d > x)
      x = d;
    return x;
  }

  static public int max(int[] c) {
    int x = Integer.MIN_VALUE;
    for (int d : c) if (d > x)
      x = d;
    return x;
  }

  static public int min(int a, int b) {
    return Math.min(a, b);
  }

  static public long min(long a, long b) {
    return Math.min(a, b);
  }

  static public float min(float a, float b) {
    return Math.min(a, b);
  }

  static public float min(float a, float b, float c) {
    return min(min(a, b), c);
  }

  static public double min(double a, double b) {
    return Math.min(a, b);
  }

  static public double min(double[] c) {
    double x = Double.MAX_VALUE;
    for (double d : c) x = Math.min(x, d);
    return x;
  }

  static public float min(float[] c) {
    float x = Float.MAX_VALUE;
    for (float d : c) x = Math.min(x, d);
    return x;
  }

  static public byte min(byte[] c) {
    byte x = 127;
    for (byte d : c) if (d < x)
      x = d;
    return x;
  }

  static public short min(short[] c) {
    short x = 0x7FFF;
    for (short d : c) if (d < x)
      x = d;
    return x;
  }

  static public int min(int[] c) {
    int x = Integer.MAX_VALUE;
    for (int d : c) if (d < x)
      x = d;
    return x;
  }

  static public long sysNow() {
    ping();
    return System.nanoTime() / 1000000;
  }

  static public long now_virtualTime;

  static public long now() {
    return now_virtualTime != 0 ? now_virtualTime : System.currentTimeMillis();
  }

  static volatile public boolean sleep_noSleep = false;

  static public void sleep(long ms) {
    ping();
    if (ms < 0)
      return;
    if (isAWTThread() && ms > 100)
      throw fail("Should not sleep on AWT thread");
    try {
      Thread.sleep(ms);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  static public void sleep() {
    try {
      if (sleep_noSleep)
        throw fail("nosleep");
      print("Sleeping.");
      sleepQuietly();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean conceptsWithFieldGreaterThan_sorted_verbose = false;

  static public <A extends Concept> Collection<A> conceptsWithFieldGreaterThan_sorted(Class<A> c, String field, Object value) {
    return conceptsWithFieldGreaterThan_sorted(db_mainConcepts(), c, field, value);
  }

  static public <A extends Concept> Collection<A> conceptsWithFieldGreaterThan_sorted(Concepts concepts, Class<A> c, String field, Object value) {
    IFieldIndex<A, Object> index = concepts.getFieldIndex(c, field);
    if (index instanceof ConceptFieldIndexDesc)
      return reverseInPlace(((ConceptFieldIndexDesc) index).objectsWithValueGreaterThan(value));
    if (conceptsWithFieldGreaterThan_sorted_verbose)
      print("conceptsWithFieldGreaterThan: table scan of " + c + " for field " + field);
    return sortByFieldInPlace(field, objectsWhereFieldGreaterThan(concepts.list(c), field, value));
  }

  static public double elapsedSeconds_sysNow(long time) {
    return elapsedSeconds(time);
  }

  static public Object serveJSON_breakAtLevels(int levels, Object... data) {
    return serveText(jsonEncode_breakAtLevels(levels, jsonPrepareData(data)));
  }

  static public void printVars_str(Object... params) {
    String s = "";
    if (odd(l(params))) {
      s = str(first(params));
      if (endsWithLetterOrDigit(s))
        s += ": ";
      params = dropFirst(params);
    }
    print(s + renderVars_str(params));
  }

  static public String dropTrailingSlashIfNemptyAfterwards(String s) {
    return l(s) > 1 ? dropSuffix("/", s) : s;
  }

  static public boolean swic_notSame(String a, String b) {
    return swic_notSame(a, b, null);
  }

  static public boolean swic_notSame(String a, String b, Matches m) {
    return l(a) > l(b) && swic(a, b, m);
  }

  static public String urldecode(String x) {
    try {
      return URLDecoder.decode(unnull(x), "UTF-8");
    } catch (UnsupportedEncodingException e) {
      throw new RuntimeException(e);
    }
  }

  static public <A> A postProcess(Object f, A a) {
    return callPostProcessor(f, a);
  }

  static public <A> A postProcess(IF1<A, A> f, A a) {
    return callPostProcessor(f, a);
  }

  static public Object subBot_serve500() {
    return call(getMainBot(), "serve500");
  }

  static public Object subBot_serve500(String msg) {
    return call(getMainBot(), "serve500", msg);
  }

  static public String hrefresh(String target) {
    return hrefresh(0, target);
  }

  static public String hrefresh(double seconds) {
    return hrefresh(seconds, "");
  }

  static public String hrefresh(double seconds, String target) {
    return tag("meta", "", "http-equiv", "refresh", "content", iceil(seconds) + (nempty(target) ? "; url=" + target : ""));
  }

  static public String or2(String a, String b) {
    return nempty(a) ? a : b;
  }

  static public String or2(String a, String b, String c) {
    return or2(or2(a, b), c);
  }

  static public MultiSet<String> asCIMultiSet(Iterable<String> l) {
    MultiSet<String> ms = new MultiSet();
    ms.map = ciMap();
    ms.addAll(l);
    return ms;
  }

  static public List collect(Iterable c, String field) {
    return collectField(c, field);
  }

  static public List collect(String field, Iterable c) {
    return collectField(c, field);
  }

  static public String h2_title(String s) {
    return htitle_h2(s);
  }

  static public String ul(String... list) {
    return ul(asList(list));
  }

  static public String ul(Collection list, Object... params) {
    StringBuilder buf = new StringBuilder();
    int i = indexOf(params, null);
    if (i == -1)
      i = l(params);
    for (Object s : withoutNulls(list)) buf.append(tag("li", s, subArray(params, i + 1))).append("\n");
    return containerTag("ul", buf, subArray(params, 0, i)) + "\n";
  }

  static public <A, B> IterableIterator<Pair<A, B>> mapPairs(Map<A, B> map) {
    final Iterator<Map.Entry<A, B>> it = map.entrySet().iterator();
    return iteratorFromFunction(new F0<Pair<A, B>>() {

      public Pair<A, B> get() {
        try {
          if (it.hasNext()) {
            Map.Entry<A, B> entry = it.next();
            return pair(entry.getKey(), entry.getValue());
          }
          return null;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "if (it.hasNext()) {\r\n      Map.Entry<A, B> entry = it.next();\r\n      ret pair...";
      }
    });
  }

  static public <A, B, C> List<C> mapPairs(Iterable<Pair<A, B>> l, IF2<A, B, C> f) {
    return mapPairsToList(l, f);
  }

  static public <A> List<Pair<A, Integer>> multiSetToPairsByPopularity(MultiSet<A> ms) {
    List<Pair<A, Integer>> l = new ArrayList();
    if (ms != null)
      for (A a : ms.highestFirst()) l.add(pair(a, ms.get(a)));
    return l;
  }

  static public String urlencode(String x) {
    try {
      return URLEncoder.encode(unnull(x), "UTF-8");
    } catch (UnsupportedEncodingException e) {
      throw new RuntimeException(e);
    }
  }

  static public String unquote(String s) {
    if (s == null)
      return null;
    if (startsWith(s, '[')) {
      int i = 1;
      while (i < s.length() && s.charAt(i) == '=') ++i;
      if (i < s.length() && s.charAt(i) == '[') {
        String m = s.substring(1, i);
        if (s.endsWith("]" + m + "]"))
          return s.substring(i + 1, s.length() - i - 1);
      }
    }
    if (s.length() > 1) {
      char c = s.charAt(0);
      if (c == '\"' || c == '\'') {
        int l = endsWith(s, c) ? s.length() - 1 : s.length();
        StringBuilder sb = new StringBuilder(l - 1);
        for (int i = 1; i < l; i++) {
          char ch = s.charAt(i);
          if (ch == '\\') {
            char nextChar = (i == l - 1) ? '\\' : s.charAt(i + 1);
            if (nextChar >= '0' && nextChar <= '7') {
              String code = "" + nextChar;
              i++;
              if ((i < l - 1) && s.charAt(i + 1) >= '0' && s.charAt(i + 1) <= '7') {
                code += s.charAt(i + 1);
                i++;
                if ((i < l - 1) && s.charAt(i + 1) >= '0' && s.charAt(i + 1) <= '7') {
                  code += s.charAt(i + 1);
                  i++;
                }
              }
              sb.append((char) Integer.parseInt(code, 8));
              continue;
            }
            switch(nextChar) {
              case '\"':
                ch = '\"';
                break;
              case '\\':
                ch = '\\';
                break;
              case 'b':
                ch = '\b';
                break;
              case 'f':
                ch = '\f';
                break;
              case 'n':
                ch = '\n';
                break;
              case 'r':
                ch = '\r';
                break;
              case 't':
                ch = '\t';
                break;
              case '\'':
                ch = '\'';
                break;
              case 'u':
                if (i >= l - 5) {
                  ch = 'u';
                  break;
                }
                int code = Integer.parseInt("" + s.charAt(i + 2) + s.charAt(i + 3) + s.charAt(i + 4) + s.charAt(i + 5), 16);
                sb.append(Character.toChars(code));
                i += 5;
                continue;
              default:
                ch = nextChar;
            }
            i++;
          }
          sb.append(ch);
        }
        return sb.toString();
      }
    }
    return s;
  }

  static public boolean eqicOneOf(String s, String... l) {
    for (String x : l) if (eqic(s, x))
      return true;
    return false;
  }

  static public List<String> tlft(String s) {
    return toLinesFullTrim(s);
  }

  static public List<String> tlft(File f) {
    return toLinesFullTrim(f);
  }

  static public <A extends Concept> Pair<A, Boolean> uniqCI2_sync(Class<A> c, final Object... params) {
    return uniqCI2_sync(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> Pair<A, Boolean> uniqCI2_sync(Concepts cc, Class<A> c, final Object... params) {
    return withDBLock(cc, new F0<Pair<A, Boolean>>() {

      public Pair<A, Boolean> get() {
        try {
          return uniqCI2(cc, c, params);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret uniqCI2(cc, c, params);";
      }
    });
  }

  static public String h2(String s, Object... params) {
    return tag("h2", s, params);
  }

  static public String plural(String s) {
    return getPlural(s);
  }

  static public String pIfNempty(String contents, Object... params) {
    return nempty(contents) ? p(contents, params) : "";
  }

  static public String htmlEncode_nlToBR(String s) {
    return htmlEncode_nlToBr(s);
  }

  static public String lines(Iterable lines) {
    return fromLines(lines);
  }

  static public String lines(Object[] lines) {
    return fromLines(asList(lines));
  }

  static public List<String> lines(String s) {
    return toLines(s);
  }

  static public int countPred(Iterable c, Object pred) {
    return nfilter(c, pred);
  }

  static public int countPred(Object pred, Iterable c) {
    return nfilter(pred, c);
  }

  static public <A> int countPred(Iterable<A> c, IF1<A, Boolean> pred) {
    return nfilter(c, pred);
  }

  static public String n2(long l) {
    return formatWithThousands(l);
  }

  static public String n2(Collection l) {
    return n2(l(l));
  }

  static public String n2(Map map) {
    return n2(l(map));
  }

  static public String n2(double l, String singular) {
    return n2(l, singular, singular + "s");
  }

  static public String n2(double l, String singular, String plural) {
    if (fraction(l) == 0)
      return n2((long) l, singular, plural);
    else
      return l + " " + plural;
  }

  static public String n2(long l, String singular, String plural) {
    return n_fancy2(l, singular, plural);
  }

  static public String n2(long l, String singular) {
    return n_fancy2(l, singular, singular + "s");
  }

  static public String n2(Collection l, String singular) {
    return n2(l(l), singular);
  }

  static public String n2(Collection l, String singular, String plural) {
    return n_fancy2(l, singular, plural);
  }

  static public String n2(Map m, String singular, String plural) {
    return n_fancy2(m, singular, plural);
  }

  static public String n2(Map m, String singular) {
    return n2(l(m), singular);
  }

  static public String n2(Object[] a, String singular) {
    return n2(l(a), singular);
  }

  static public String n2(Object[] a, String singular, String plural) {
    return n_fancy2(a, singular, plural);
  }

  static public String n2(MultiSet ms, String singular, String plural) {
    return n_fancy2(ms, singular, plural);
  }

  static public String hPopDownButtonWithText(String text, String... entries) {
    return (empty(text) ? "" : text + " ") + hPopDownButton(entries);
  }

  static public String hPopDownButtonWithText(String text, Collection<String> entries) {
    return hPopDownButtonWithText(text, asStringArray(entries));
  }

  static public String camelCase(List<String> words) {
    StringBuilder buf = new StringBuilder();
    for (int i = 0; i < l(words); i++) {
      String word = words.get(i);
      word = toLower(word);
      buf.append(i == 0 ? word : firstToUpper(word));
    }
    return str(buf);
  }

  static public String camelCase(String words) {
    return camelCase(words(words));
  }

  static public String addParamToURL(String url, Map params) {
    return appendQueryToURL(url, params);
  }

  static public String addParamToURL(String url, Object... data) {
    return appendQueryToURL(url, data);
  }

  static public String ahref_undecorated(String link, Object contents, Object... params) {
    return ahref_unstyled(link, contents, params);
  }

  static public String quote(Object o) {
    if (o == null)
      return "null";
    return quote(str(o));
  }

  static public String quote(String s) {
    if (s == null)
      return "null";
    StringBuilder out = new StringBuilder((int) (l(s) * 1.5 + 2));
    quote_impl(s, out);
    return out.toString();
  }

  static public void quote_impl(String s, StringBuilder out) {
    out.append('"');
    int l = s.length();
    for (int i = 0; i < l; i++) {
      char c = s.charAt(i);
      if (c == '\\' || c == '"')
        out.append('\\').append(c);
      else if (c == '\r')
        out.append("\\r");
      else if (c == '\n')
        out.append("\\n");
      else if (c == '\t')
        out.append("\\t");
      else if (c == '\0')
        out.append("\\0");
      else
        out.append(c);
    }
    out.append('"');
  }

  static public String renderEqualsCommaProperties(Map<String, String> map) {
    return joinWithComma(map(map, (key, value) -> key + "=" + value));
  }

  static public <A extends Concept> int countConceptsWhereCI(Concepts cc, Class<A> c, Object... params) {
    return countConceptsCI(cc, c, params);
  }

  static public <A extends Concept> int countConceptsWhereCI(Class<A> c, Object... params) {
    return countConceptsCI(c, params);
  }

  static public <A extends Concept> A getConceptOpt(Class<A> cc, long id) {
    return getConceptOpt(db_mainConcepts(), cc, id);
  }

  static public <A extends Concept> A getConceptOpt(Concepts concepts, Class<A> cc, long id) {
    return concepts == null ? null : optCast(cc, concepts.getConcept(id));
  }

  static public String htmlEncode2_nlToBr(String s) {
    return htmlEncode_nlToBr(s);
  }

  static public String hcenter3(Object contents, Object... __) {
    return tag("div", contents, params_stylePlus(__, "width: 100%; text-align: center"));
  }

  static public String hsnippetimg_scaleToWidth(int width, String imageID, int originalWidth, int originalHeight, Object... params) {
    return hsnippetimg(imageID, paramsPlus(params, "width", width, "height", calcHeight(originalWidth, originalHeight, width)));
  }

  static public boolean containsAngleBracketVars(String s) {
    List<String> tok = javaTokWithAngleBrackets(s);
    return nempty(indicesOfAngleBracketVars(tok));
  }

  static public <A extends Concept> A uniqCI_returnIfNew(Class<A> c, Object... params) {
    Pair<A, Boolean> p = uniqCI2(c, params);
    return p.b ? p.a : null;
  }

  static public <A extends Concept> A uniqCI_returnIfNew(Concepts cc, Class<A> c, Object... params) {
    Pair<A, Boolean> p = uniqCI2(cc, c, params);
    return p.b ? p.a : null;
  }

  static public String htitle(String title) {
    return hfulltag("title", htmlencode_noQuotes(title));
  }

  static public String localTimeWithSeconds(long time) {
    return simpleDateFormat_local("HH:mm:ss").format(time);
  }

  static public String localTimeWithSeconds() {
    return localTimeWithSeconds(now());
  }

  static public <A, B> List<Pair<A, B>> syncMapToPairs(Map<A, B> map) {
    if (map == null)
      return new ArrayList();
    synchronized (collectionMutex(map)) {
      return mapToPairs(map);
    }
  }

  static public String jsonEncodeMap(Object... __) {
    return jsonEncode(paramsToMap(__));
  }

  static public <A extends Concept> Collection<String> distinctCIFieldValuesOfConcepts(Class<A> c, String field) {
    return distinctCIFieldValuesOfConcepts(db_mainConcepts(), c, field);
  }

  static public <A extends Concept> Collection<String> distinctCIFieldValuesOfConcepts(Concepts concepts, Class<A> c, String field) {
    IFieldIndex<A, String> index = concepts.getCIFieldIndex(c, field);
    if (index != null)
      return index.allValues();
    Set<String> set = ciSet();
    for (A x : concepts.list(c)) set.add((String) getOpt(x, field));
    return set;
  }

  static public <A> A firstNotNull(Iterable<A> c) {
    Iterator<A> it = c.iterator();
    while (it.hasNext()) {
      A a = it.next();
      if (a != null)
        return a;
    }
    return null;
  }

  static public <A> A optCast(Class<A> c, Object o) {
    return isInstance(c, o) ? (A) o : null;
  }

  static public boolean swic(String a, String b) {
    return startsWithIgnoreCase(a, b);
  }

  static public boolean swic(String a, String b, Matches m) {
    if (!swic(a, b))
      return false;
    m.m = new String[] { substring(a, l(b)) };
    return true;
  }

  static public Object deref(Object o) {
    if (o instanceof Derefable)
      o = ((Derefable) o).get();
    return o;
  }

  static public boolean isSubclassOf(Class a, Class b) {
    return isSubclass(a, b);
  }

  static public <A> void removeAll(Collection<A> a, Collection<A> b) {
    if (a != null && b != null)
      a.removeAll(b);
  }

  static public <A, B> void removeAll(Map<A, B> a, Collection<A> b) {
    if (a != null && b != null)
      for (A x : b) a.remove(x);
  }

  static public <A, B extends A> boolean removeAll(Collection<A> c, B... b) {
    return c != null && b != null && c.removeAll(Arrays.asList(b));
  }

  static public <A, B> void removeAll(Map<A, B> a, A... b) {
    if (a != null && b != null)
      for (A x : b) a.remove(x);
  }

  static public String dropLoadableUtilsPackageFromStruct(String s) {
    String prefix = "loadableUtils.utils$";
    if (!contains(s, "loadableUtils.utils$"))
      return s;
    List<String> tok = javaTokForStructure(s);
    for (int i = 5; i < l(tok); i += 2) if (eqGet(tok, i - 4, "loadableUtils") && eqGet(tok, i - 2, "."))
      replaceTokens(tok, i - 4, i + 1, dropPrefix("utils$", tok.get(i)));
    return join(tok);
  }

  static public String indentStructureString_firstLevels(int levelsToIndent, String s) {
    if (s == null)
      return null;
    List<String> tok = javaTokForStructure(s);
    StringBuilder buf = new StringBuilder();
    int level = 0;
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (isOpeningBracket(t)) {
        int j = i + 5;
        if (containsClosingBracket(subList(tok, i + 2, i + 5))) {
          buf.append(joinSubList(tok, i, j));
          i = j - 1;
        } else {
          buf.append(t);
          ++level;
          if (level <= levelsToIndent)
            buf.append("\n").append(spaces(level * 2));
        }
      } else if (isClosingBracket(t)) {
        if (level-- <= levelsToIndent)
          buf.append("\n").append(spaces(level * 2));
        buf.append(t);
      } else if (eq(t, ",")) {
        buf.append(t);
        if (level <= levelsToIndent)
          buf.append("\n").append(spaces(level * 2));
        i++;
      } else
        buf.append(t);
    }
    return str(buf);
  }

  static public String strOrNull(Object o) {
    return o == null ? null : str(o);
  }

  static public String appendBracketed(Object o) {
    String b = strOrNull(o);
    return empty(b) ? "" : "" + " (" + b + ")";
  }

  static public String appendBracketed(String a, String b) {
    return a + appendBracketed(b);
  }

  static public Class javax() {
    return getJavaX();
  }

  static public void setDefaultClassFinder(Object cf) {
    _defaultClassFinder_value = cf;
  }

  static public HashMap<String, Class> findClass_fullName_cache = new HashMap();

  static public Class findClass_fullName(String name) {
    synchronized (findClass_fullName_cache) {
      if (findClass_fullName_cache.containsKey(name))
        return findClass_fullName_cache.get(name);
      Class c;
      try {
        c = Class.forName(name);
      } catch (ClassNotFoundException e) {
        c = null;
      }
      findClass_fullName_cache.put(name, c);
      return c;
    }
  }

  static public AutoCloseable tempInterceptPrintIfNotIntercepted(F1<String, Boolean> f) {
    return print_byThread().get() == null ? tempInterceptPrint(f) : null;
  }

  static public Throwable printStackTrace2(Throwable e) {
    print(getStackTrace2(e));
    return e;
  }

  static public void printStackTrace2() {
    printStackTrace2(new Throwable());
  }

  static public void printStackTrace2(String msg) {
    printStackTrace2(new Throwable(msg));
  }

  static public Object _defaultClassFinder_value = defaultDefaultClassFinder();

  static public Object _defaultClassFinder() {
    return _defaultClassFinder_value;
  }

  static public Concepts newConceptsWithClassFinder(String progID) {
    Concepts cc = new Concepts(progID);
    cc.classFinder = _defaultClassFinder();
    return cc;
  }

  static public String getDBProgramID_id;

  static public String getDBProgramID() {
    return nempty(getDBProgramID_id) ? getDBProgramID_id : programIDWithCase();
  }

  static public long toMS(double seconds) {
    return (long) (seconds * 1000);
  }

  static volatile public boolean ping_pauseAll = false;

  static public int ping_sleep = 100;

  static volatile public boolean ping_anyActions = false;

  static public Map<Thread, Object> ping_actions = newWeakHashMap();

  static public ThreadLocal<Boolean> ping_isCleanUpThread = new ThreadLocal();

  static public boolean ping() {
    if (ping_pauseAll || ping_anyActions)
      ping_impl(true);
    return true;
  }

  static public boolean ping_impl(boolean okInCleanUp) {
    try {
      if (ping_pauseAll && !isAWTThread()) {
        do Thread.sleep(ping_sleep); while (ping_pauseAll);
        return true;
      }
      if (ping_anyActions) {
        if (!okInCleanUp && !isTrue(ping_isCleanUpThread.get()))
          failIfUnlicensed();
        Object action = null;
        synchronized (ping_actions) {
          if (!ping_actions.isEmpty()) {
            action = ping_actions.get(currentThread());
            if (action instanceof Runnable)
              ping_actions.remove(currentThread());
            if (ping_actions.isEmpty())
              ping_anyActions = false;
          }
        }
        if (action instanceof Runnable)
          ((Runnable) action).run();
        else if (eq(action, "cancelled"))
          throw fail("Thread cancelled.");
      }
      return false;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A extends Concept> int countConceptsCI(Concepts cc, Class<A> c, Object... params) {
    if (empty(params))
      return countConcepts(cc, c);
    return l(conceptsWhereCI(cc, c, params));
  }

  static public <A extends Concept> int countConceptsCI(Class<A> c, Object... params) {
    return countConceptsCI(db_mainConcepts(), c, params);
  }

  static public Iterator emptyIterator() {
    return Collections.emptyIterator();
  }

  static public <A extends Concept> List<A> sortConceptsByID(Collection<A> l) {
    return sortedByCalculatedField(l, c -> c.id);
  }

  static public <A extends Concept> Object[] expandParams(Class<A> c, Object[] params) {
    if (l(params) == 1)
      params = new Object[] { singleFieldName(c), params[0] };
    else
      warnIfOddCount(params);
    return params;
  }

  static public <A extends Concept> List<A> filterConceptsIC(Collection<A> list, Object... params) {
    List<A> l = new ArrayList();
    if (list != null)
      for (A x : list) if (checkConceptFieldsIC(x, params))
        l.add(x);
    return l;
  }

  static public String getClassName(Object o) {
    return o == null ? "null" : o instanceof Class ? ((Class) o).getName() : o.getClass().getName();
  }

  static public boolean mmo2_match(MMOPattern pattern, String s) {
    return mmo2_match(pattern, s, false, false);
  }

  static public boolean mmo2_match(MMOPattern pattern, String s, boolean startOfLine, boolean endOfLine) {
    if (pattern == null)
      return false;
    String s2 = trim(s);
    if (pattern instanceof MMOPattern.StartOfLine)
      return mmo2_match(((MMOPattern.StartOfLine) pattern).p, s2, true, endOfLine);
    if (pattern instanceof MMOPattern.EndOfLine)
      return mmo2_match(((MMOPattern.EndOfLine) pattern).p, s2, startOfLine, true);
    if (pattern instanceof MMOPattern.Phrase) {
      String p = ((MMOPattern.Phrase) pattern).phrase;
      if (((MMOPattern.Phrase) pattern).quoted)
        return cicWithSmartWordBoundary(s2, p);
      if (startsWith(p, "#"))
        return eqic(p, s2);
      return match3_startOrEndOfLine(p, s2, startOfLine, endOfLine);
    }
    if (pattern instanceof MMOPattern.And)
      return all(((MMOPattern.And) pattern).l, pat -> mmo2_match(pat, s2, startOfLine, endOfLine));
    if (pattern instanceof MMOPattern.Or)
      return any(((MMOPattern.Or) pattern).l, pat -> mmo2_match(pat, s2, startOfLine, endOfLine));
    if (pattern instanceof MMOPattern.Not)
      return !mmo2_match(((MMOPattern.Not) pattern).p, s2, startOfLine, endOfLine);
    throw fail("what. " + pattern);
  }

  static public boolean mmo2_match(String pattern, String s) {
    return mmo2_match(mmo2_parsePattern(pattern), s);
  }

  static public MMOPattern mmo2_parsePattern(String s) {
    s = trim(tok_deRoundBracket(trim(s)));
    List<String> tok = javaTokWithBrackets(s);
    List<String> l = tok_splitAtComma(tok);
    if (l(l) > 1)
      return new MMOPattern.Or(lambdaMap(__51 -> mmo2_parsePattern(__51), l));
    l = tok_splitAtPlus(tok);
    if (l(l) > 1)
      return new MMOPattern.And(lambdaMap(__52 -> mmo2_parsePattern(__52), l));
    if (startsWith(s, "!"))
      return new MMOPattern.Not(mmo2_parsePattern(dropFirst(s)));
    if (startsWith(s, "^"))
      return new MMOPattern.StartOfLine(mmo2_parsePattern(dropFirst(s)));
    if (endsWith(s, "$"))
      return new MMOPattern.EndOfLine(mmo2_parsePattern(dropLast(s)));
    l = tok_splitAtAsterisk(tok);
    if (l(l) == 2)
      return new MMOPattern.Weighted(parseDouble(second(l)), mmo2_parsePattern(first(l)));
    return new MMOPattern.Phrase(unquote(s), isQuoted(s));
  }

  static public List<String> javaTokWithAngleBrackets(String s) {
    return tok_combineAngleBrackets_keep(javaTok(s));
  }

  static public <A> List<Integer> indicesOf(List<A> l, A a) {
    if (l == null)
      return null;
    if (l instanceof IContentsIndexedList)
      return intArrayToList(((IContentsIndexedList) l).indicesOf(a));
    if (l instanceof IContentsIndexedList2)
      return map(h -> ((HasIndex) h).idx, ((IContentsIndexedList2) l).indicesOf_treeSetOfHasIndex(a));
    List<Integer> x = new ArrayList();
    for (int i = 0; i < l(l); i++) if (eq(l.get(i), a))
      x.add(i);
    return x;
  }

  static public <A> List<Integer> indicesOf(String s, String x) {
    int i = -1;
    List<Integer> out = new ArrayList();
    while ((i = indexOf(s, x, i + 1)) >= 0) out.add(i);
    return out;
  }

  static public String angleBracketed(String s) {
    return angleBracket(s);
  }

  public static <A> String join(String glue, Iterable<A> strings) {
    if (strings == null)
      return "";
    if (strings instanceof Collection) {
      if (((Collection) strings).size() == 1)
        return str(first(((Collection) strings)));
    }
    StringBuilder buf = new StringBuilder();
    Iterator<A> i = strings.iterator();
    if (i.hasNext()) {
      buf.append(i.next());
      while (i.hasNext()) buf.append(glue).append(i.next());
    }
    return buf.toString();
  }

  public static String join(String glue, String... strings) {
    return join(glue, Arrays.asList(strings));
  }

  static public <A> String join(Iterable<A> strings) {
    return join("", strings);
  }

  static public <A> String join(Iterable<A> strings, String glue) {
    return join(glue, strings);
  }

  public static String join(String[] strings) {
    return join("", strings);
  }

  static public String join(String glue, Pair p) {
    return p == null ? "" : str(p.a) + glue + str(p.b);
  }

  static public <A> A grabValueAndCancel(VF1<VF1<A>> r) {
    Var<A> var = new Var();
    withCancelPoint(new VF1<CancelPoint>() {

      public void get(CancelPoint cp) {
        try {
          callF(r, new VF1<A>() {

            public void get(A a) {
              try {
                var.set(a);
                cancelTo(cp);
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "var.set(a); cancelTo(cp)";
            }
          });
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "callF(r, voidfunc(A a) { var.set(a); cancelTo(cp) });";
      }
    });
    return var.get();
  }

  static public void flexMatchAngleBracketVarsIC_honorPunctuation_iterate(String pat, String input, VF1<Map<String, String>> onMatch) {
    List<String> vars = new ArrayList();
    String starsPat = angleBracketVarsToStars(pat, vars);
    flexMatchIC_iterate(starsPat, javaTokWithBrackets(starsPat), javaTokWithBrackets(input), new VF1<Matches>() {

      public void get(Matches m) {
        try {
          Map<String, String> map = matchesToMapUsingVarList_ciMap(m, vars);
          if (map != null)
            callF(onMatch, map);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "SS map = matchesToMapUsingVarList_ciMap(m, vars);\r\n    if (map != null) callF...";
      }
    });
  }

  static public void flexMatchAngleBracketVarsIC_iterate(String pat, String input, VF1<Map<String, String>> onMatch) {
    List<String> vars = new ArrayList();
    String starsPat = angleBracketVarsToStars(pat, vars);
    flexMatchIC_iterate(starsPat, input, new VF1<Matches>() {

      public void get(Matches m) {
        try {
          Map<String, String> map = matchesToMapUsingVarList_ciMap(m, vars);
          if (map != null)
            callF(onMatch, map);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "SS map = matchesToMapUsingVarList_ciMap(m, vars);\r\n    if (map != null) callF...";
      }
    });
  }

  static public HashMap<String, Class> findClass_cache = new HashMap();

  static public Class findClass(String name) {
    synchronized (findClass_cache) {
      if (findClass_cache.containsKey(name))
        return findClass_cache.get(name);
      if (!isJavaIdentifier(name))
        return null;
      Class c;
      try {
        c = Class.forName("main$" + name);
      } catch (ClassNotFoundException e) {
        c = null;
      }
      findClass_cache.put(name, c);
      return c;
    }
  }

  static public Object nuObject(String className, Object... args) {
    try {
      return nuObject(classForName(className), args);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A nuObject(Class<A> c, Object... args) {
    try {
      if (args.length == 0)
        return nuObjectWithoutArguments(c);
      Constructor m = nuObject_findConstructor(c, args);
      makeAccessible(m);
      return (A) m.newInstance(args);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Constructor nuObject_findConstructor(Class c, Object... args) {
    for (Constructor m : c.getDeclaredConstructors()) {
      if (!nuObject_checkArgs(m.getParameterTypes(), args, false))
        continue;
      return m;
    }
    throw fail("Constructor " + c.getName() + getClasses(args) + " not found" + (args.length == 0 && (c.getModifiers() & java.lang.reflect.Modifier.STATIC) == 0 ? " - hint: it's a non-static class!" : ""));
  }

  static public boolean nuObject_checkArgs(Class[] types, Object[] args, boolean debug) {
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++) if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
      if (debug)
        System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
      return false;
    }
    return true;
  }

  static public int csetAll(Concept c, Object... values) {
    return cset(c, values);
  }

  static public int csetAll(Iterable<? extends Concept> l, Object... values) {
    int n = 0;
    for (Concept c : unnull(l)) n += cset(c, values);
    return n;
  }

  static public boolean isInstance(Class type, Object arg) {
    return type.isInstance(arg);
  }

  static public String dropSuffix(String suffix, String s) {
    return s.endsWith(suffix) ? s.substring(0, l(s) - l(suffix)) : s;
  }

  static public String htitle_h1(String s) {
    return htitle_noEncode(dropTags(s)) + h1(s);
  }

  static public String hfulltag(String tag) {
    return hfulltag(tag, "");
  }

  static public String hfulltag(String tag, Object contents, Object... params) {
    return hopeningTag(tag, params) + str(contents) + "</" + tag + ">";
  }

  static public String tag(String tag) {
    return htag(tag);
  }

  static public String tag(String tag, Object contents, Object... params) {
    return htag(tag, str(contents), params);
  }

  static public String tag(String tag, StringBuilder contents, Object... params) {
    return htag(tag, contents, params);
  }

  static public String tag(String tag, StringBuffer contents, Object... params) {
    return htag(tag, contents, params);
  }

  static public String htmlencode(Object o) {
    return htmlencode(str(o));
  }

  static public String htmlencode(String s) {
    if (s == null)
      return "";
    StringBuilder out = new StringBuilder(Math.max(16, s.length()));
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c > 127 || c == '"' || c == '<' || c == '>' || c == '&') {
        int cp = s.codePointAt(i);
        out.append("&#x");
        out.append(intToHex_flexLength(cp));
        out.append(';');
        i += Character.charCount(cp) - 1;
      } else
        out.append(c);
    }
    return out.toString();
  }

  static public String getType(Object o) {
    return getClassName(o);
  }

  static public long getFileSize(String path) {
    return path == null ? 0 : new File(path).length();
  }

  static public long getFileSize(File f) {
    return f == null ? 0 : f.length();
  }

  static public List<String> allToString(Iterable c) {
    List<String> l = new ArrayList();
    for (Object o : unnull(c)) l.add(str(o));
    return l;
  }

  static public List<String> allToString(Object[] c) {
    List<String> l = new ArrayList();
    for (Object o : unnull(c)) l.add(str(o));
    return l;
  }

  static public String asString(Object o) {
    return o == null ? null : o.toString();
  }

  static public String htitle_noEncode(String title) {
    return tag("title", title);
  }

  static public String dropTags(String html) {
    return dropAllTags(html);
  }

  static public List<String> dropTags(List<String> tok) {
    return dropAllTags(tok);
  }

  static public String href(String link, Object contents, Object... params) {
    if (link == null)
      return str(contents);
    return tag("a", contents, arrayPlus(params, "href", link));
  }

  static public String hjavascript(String script) {
    return tag("script", script, "type", "text/javascript");
  }

  static public int javaTok_n, javaTok_elements;

  static public boolean javaTok_opt = false;

  static public List<String> javaTok(String s) {
    ++javaTok_n;
    ArrayList<String> tok = new ArrayList();
    int l = s == null ? 0 : s.length();
    int i = 0;
    while (i < l) {
      int j = i;
      char c, d;
      while (j < l) {
        c = s.charAt(j);
        d = j + 1 >= l ? '\0' : s.charAt(j + 1);
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (c == '/' && d == '*') {
          do ++j; while (j < l && !regionMatches(s, j, "*/"));
          j = Math.min(j + 2, l);
        } else if (c == '/' && d == '/') {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      tok.add(javaTok_substringN(s, i, j));
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      d = i + 1 >= l ? '\0' : s.charAt(i + 1);
      if (c == '\'' && Character.isJavaIdentifierStart(d) && i + 2 < l && "'\\".indexOf(s.charAt(i + 2)) < 0) {
        j += 2;
        while (j < l && Character.isJavaIdentifierPart(s.charAt(j))) ++j;
      } else if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          int c2 = s.charAt(j);
          if (c2 == opener || c2 == '\n' && opener == '\'') {
            ++j;
            break;
          } else if (c2 == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\''));
      else if (Character.isDigit(c)) {
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
        if (j < l && s.charAt(j) == 'L')
          ++j;
      } else if (c == '[' && d == '[') {
        do ++j; while (j < l && !regionMatches(s, j, "]]"));
        j = Math.min(j + 2, l);
      } else if (c == '[' && d == '=' && i + 2 < l && s.charAt(i + 2) == '[') {
        do ++j; while (j + 2 < l && !regionMatches(s, j, "]=]"));
        j = Math.min(j + 3, l);
      } else
        ++j;
      tok.add(javaTok_substringC(s, i, j));
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    javaTok_elements += tok.size();
    return tok;
  }

  static public List<String> javaTok(List<String> tok) {
    return javaTokWithExisting(join(tok), tok);
  }

  static public <A> ArrayList<A> cloneList(Iterable<A> l) {
    return l instanceof Collection ? cloneList((Collection) l) : asList(l);
  }

  static public <A> ArrayList<A> cloneList(Collection<A> l) {
    if (l == null)
      return new ArrayList();
    synchronized (collectionMutex(l)) {
      return new ArrayList<A>(l);
    }
  }

  static public String jreplace(String s, String in, String out) {
    return jreplace(s, in, out, null);
  }

  static public String jreplace(String s, String in, String out, Object condition) {
    List<String> tok = javaTok(s);
    return jreplace(tok, in, out, condition) ? join(tok) : s;
  }

  static public boolean jreplace(List<String> tok, String in, String out) {
    return jreplace(tok, in, out, false, true, null);
  }

  static public boolean jreplace(List<String> tok, String in, String out, Object condition) {
    return jreplace(tok, in, out, false, true, condition);
  }

  static public boolean jreplace(List<String> tok, String in, String out, IF2<List<String>, Integer, Boolean> condition) {
    return jreplace(tok, in, out, (Object) condition);
  }

  static public boolean jreplace(List<String> tok, String in, String out, boolean ignoreCase, boolean reTok, Object condition) {
    String[] toks = javaTokForJFind_array(in);
    int lTokin = toks.length * 2 + 1;
    boolean anyChange = false;
    int i = -1;
    for (int n = 0; n < 10000; n++) {
      i = findCodeTokens(tok, i + 1, ignoreCase, toks, condition);
      if (i < 0)
        return anyChange;
      List<String> subList = tok.subList(i - 1, i + lTokin - 1);
      String expansion = jreplaceExpandRefs(out, subList);
      int end = i + lTokin - 2;
      clearAllTokens(tok, i, end);
      tok.set(i, expansion);
      if (reTok)
        reTok(tok, i, end);
      i = end;
      anyChange = true;
    }
    throw fail("woot? 10000! " + quote(in) + " => " + quote(out));
  }

  static public boolean jreplace_debug = false;

  static public Map paramsToMap(Object... params) {
    int n = l(params);
    if (l(params) == 1 && params[0] instanceof Map)
      return (Map) params[0];
    LinkedHashMap map = new LinkedHashMap();
    for (int i = 0; i + 1 < n; i += 2) mapPut(map, params[i], params[i + 1]);
    return map;
  }

  static public String htag(String tag) {
    return htag(tag, "");
  }

  static public String htag(String tag, Object contents, Object... params) {
    String openingTag = hopeningTag(tag, params);
    String s = str(contents);
    if (empty(s) && neqic(tag, "script"))
      return dropLast(openingTag) + "/>";
    return openingTag + s + "</" + tag + ">";
  }

  static public Object[] html_massageAutofocusParam(Object[] params) {
    Object autofocus = optPar("autofocus", params);
    return changeParam(params, "autofocus", eqOneOf(autofocus, true, 1, "1", "autofocus") ? html_valueLessParam() : null);
  }

  static public String hopeningTag(String tag, Map params) {
    return hopeningTag(tag, mapToParams(params));
  }

  static public String hopeningTag(String tag, Object... params) {
    StringBuilder buf = new StringBuilder();
    buf.append("<" + tag);
    params = unrollParams(params);
    for (int i = 0; i < l(params); i += 2) {
      String name = (String) get(params, i);
      Object val = get(params, i + 1);
      if (nempty(name) && val != null) {
        if (val == html_valueLessParam())
          buf.append(" " + name);
        else {
          String s = str(val);
          if (!empty(s))
            buf.append(" " + name + "=" + htmlQuote(s));
        }
      }
    }
    buf.append(">");
    return str(buf);
  }

  static public String htmlencode2(String s) {
    return htmlencode_noQuotes(s);
  }

  static public boolean odd(int i) {
    return (i & 1) != 0;
  }

  static public boolean odd(long i) {
    return (i & 1) != 0;
  }

  static public boolean odd(BigInteger i) {
    return odd(toInt(i));
  }

  static public Object first(Object list) {
    return first((Iterable) list);
  }

  static public <A> A first(List<A> list) {
    return empty(list) ? null : list.get(0);
  }

  static public <A> A first(A[] bla) {
    return bla == null || bla.length == 0 ? null : bla[0];
  }

  static public <A> A first(IterableIterator<A> i) {
    return first((Iterator<A>) i);
  }

  static public <A> A first(Iterator<A> i) {
    return i == null || !i.hasNext() ? null : i.next();
  }

  static public <A> A first(Iterable<A> i) {
    if (i == null)
      return null;
    Iterator<A> it = i.iterator();
    return it.hasNext() ? it.next() : null;
  }

  static public Character first(String s) {
    return empty(s) ? null : s.charAt(0);
  }

  static public Character first(CharSequence s) {
    return empty(s) ? null : s.charAt(0);
  }

  static public <A, B> A first(Pair<A, B> p) {
    return p == null ? null : p.a;
  }

  static public Byte first(byte[] l) {
    return empty(l) ? null : l[0];
  }

  static public String[] dropFirst(int n, String[] a) {
    return drop(n, a);
  }

  static public String[] dropFirst(String[] a) {
    return drop(1, a);
  }

  static public Object[] dropFirst(Object[] a) {
    return drop(1, a);
  }

  static public <A> List<A> dropFirst(List<A> l) {
    return dropFirst(1, l);
  }

  static public <A> List<A> dropFirst(int n, Iterable<A> i) {
    return dropFirst(n, toList(i));
  }

  static public <A> List<A> dropFirst(Iterable<A> i) {
    return dropFirst(toList(i));
  }

  static public <A> List<A> dropFirst(int n, List<A> l) {
    return n <= 0 ? l : new ArrayList(l.subList(Math.min(n, l.size()), l.size()));
  }

  static public <A> List<A> dropFirst(List<A> l, int n) {
    return dropFirst(n, l);
  }

  static public String dropFirst(int n, String s) {
    return substring(s, n);
  }

  static public String dropFirst(String s, int n) {
    return substring(s, n);
  }

  static public String dropFirst(String s) {
    return substring(s, 1);
  }

  static public <A> Chain<A> dropFirst(Chain<A> c) {
    return c == null ? null : c.next;
  }

  static public boolean even(int i) {
    return (i & 1) == 0;
  }

  static public boolean even(long i) {
    return (i & 1) == 0;
  }

  static public boolean even(BigInteger n) {
    return even(n.intValue());
  }

  static public <A> A or(A a, A b) {
    return a != null ? a : b;
  }

  static public Object html_valueLessParam_cache;

  static public Object html_valueLessParam() {
    if (html_valueLessParam_cache == null)
      html_valueLessParam_cache = html_valueLessParam_load();
    return html_valueLessParam_cache;
  }

  static public Object html_valueLessParam_load() {
    return new Object();
  }

  static public String containerTag(String tag) {
    return containerTag(tag, "");
  }

  static public String containerTag(String tag, Object contents, Object... params) {
    String openingTag = hopeningTag(tag, params);
    String s = str(contents);
    return openingTag + s + "</" + tag + ">";
  }

  static public String hAddToHead(String html, String tag) {
    List<String> tok = htmlTok(html);
    List<String> head = first(findContainerTag(tok, "head"));
    if (head == null)
      return tag + html;
    head.set(2, addLineBreak(tag) + head.get(2));
    return join(tok);
  }

  static public String hcss(Object contents) {
    return htag("style", contents);
  }

  static public String hStylesheetSnippet_maxCache(String snippetID) {
    return tag("link", "", "rel", "stylesheet", "type", "text/css", "href", snippetRawURL_maxCache(snippetID, "text/css"));
  }

  static public String hjssnippet_maxCache(String snippetID) {
    return hfulltag("script", "", "src", snippetRawURL_maxCache(snippetID, "text/javascript"));
  }

  static public String div(Object contents, Object... params) {
    return hfulltag("div", contents, params);
  }

  static public String div() {
    return div("");
  }

  static public BigInteger div(BigInteger a, BigInteger b) {
    return a.divide(b);
  }

  static public BigInteger div(BigInteger a, int b) {
    return a.divide(bigint(b));
  }

  static public Object[] params_stylePlus(Object[] params, String style) {
    return paramsPlus(params, "style", joinNemptiesWithSemicolon(stringPar("style", params), style));
  }

  static public Object[] params_stylePlus(String style, Object[] params) {
    return params_stylePlus(params, style);
  }

  static public String stringPar(Object[] params, String name) {
    return stringOptPar(params, name);
  }

  static public String stringPar(String name, Object[] params) {
    return stringOptPar(params, name);
  }

  static public String stringPar(String name, Map params) {
    return (String) optPar(name, params);
  }

  static public String stringPar(String name, Object[] params, String defaultValue) {
    return optPar(name, params, defaultValue);
  }

  static public Object[] dropParam(Object key, Object[] params) {
    return paramsWithout(params, key);
  }

  static public String joinNemptiesWithSemicolon(String... strings) {
    return joinNempties("; ", strings);
  }

  static public String joinNemptiesWithSemicolon(Collection<String> strings) {
    return joinNempties("; ", strings);
  }

  static public <A> List<A> lookupPossiblyIgnoreCase(MultiMap<String, A> map, String key) {
    if (map == null)
      return null;
    List<A> value = map.get(key);
    return !value.isEmpty() ? value : lookupIgnoreCase(map, key);
  }

  static public <A> A lookupPossiblyIgnoreCase(Map<String, A> map, String key) {
    if (map == null)
      return null;
    A value = map.get(key);
    return value != null ? value : lookupIgnoreCase(map, key);
  }

  static public <A, B> boolean eitherIsB(Either<A, B> e) {
    return e != null && e.isB();
  }

  static public <A> Set<A> synchroSet() {
    return synchroHashSet();
  }

  static public <A> Set<A> synchroSet(Set<A> set) {
    return Collections.synchronizedSet(set);
  }

  static public <A> Set<A> newWeakHashSet() {
    return synchroWeakHashSet();
  }

  static public Thread newThread(Object runnable) {
    return new Thread(_topLevelErrorHandling(toRunnable(runnable)));
  }

  static public Thread newThread(Object runnable, String name) {
    if (name == null)
      name = defaultThreadName();
    return new Thread(_topLevelErrorHandling(toRunnable(runnable)), name);
  }

  static public Thread newThread(String name, Object runnable) {
    return newThread(runnable, name);
  }

  static public <A> A getAndClearThreadLocal(ThreadLocal<A> tl) {
    A a = tl.get();
    tl.set(null);
    return a;
  }

  static public Thread currentThread() {
    return Thread.currentThread();
  }

  static public <A extends Throwable> A printStackTrace(A e) {
    print(getStackTrace(e));
    return e;
  }

  static public void printStackTrace() {
    printStackTrace(new Throwable());
  }

  static public void printStackTrace(String msg) {
    printStackTrace(new Throwable(msg));
  }

  static public void printStackTrace(String msg, Throwable e) {
    printStackTrace(new Throwable(msg, e));
  }

  static public List beforeDelegatingToThread_operations = synchroList();

  static public void beforeDelegatingToThread(Thread t) {
    for (Object op : cloneList(beforeDelegatingToThread_operations)) pcallF(op, t);
  }

  static public void beforeDelegatingToThread_do(Object f) {
    setAdd(beforeDelegatingToThread_operations, f);
  }

  static public Thread startThread(Object runnable) {
    return startThread(defaultThreadName(), runnable);
  }

  static public Thread startThread(String name, Object runnable) {
    runnable = wrapAsActivity(runnable);
    return startThread(newThread(toRunnable(runnable), name));
  }

  static public Thread startThread(Thread t) {
    _registerThread(t);
    t.start();
    return t;
  }

  static public void cancelAndInterruptThread(Thread t) {
    if (t == null)
      return;
    cancelThread(t);
    t.interrupt();
  }

  static public <A, B> Either<A, B> either2(B b) {
    return new Either(2, b);
  }

  static public <A, B> Either<A, B> either1(A a) {
    return new Either(1, a);
  }

  static public List afterDelegatingToThread_operations = synchroList();

  static public void afterDelegatingToThread(Thread t) {
    for (Object op : cloneList(afterDelegatingToThread_operations)) pcallF(op, t);
  }

  static public void afterDelegatingToThread_do(Object f) {
    setAdd(afterDelegatingToThread_operations, f);
  }

  static public int toMS_int(double seconds) {
    return toInt_checked((long) (seconds * 1000));
  }

  static public <A> AutoCloseable tempSetThreadLocal(final ThreadLocal<A> tl, A a) {
    if (tl == null)
      return null;
    final A prev = setThreadLocal(tl, a);
    return new AutoCloseable() {

      public String toString() {
        return "tl.set(prev);";
      }

      public void close() throws Exception {
        tl.set(prev);
      }
    };
  }

  static public String getTag(String s) {
    if (!startsWith(s, "<"))
      return null;
    int i = 1;
    if (charAt(s, i) == '/')
      ++i;
    while (" \t>/\0".indexOf(charAt(s, i)) < 0) ++i;
    return substring(s, 1, i);
  }

  static public String firstToken(String s) {
    return firstJavaToken(s);
  }

  static public String firstToken(List<String> tok) {
    return get(tok, 1);
  }

  static public List<String> htmlTok(String s) {
    return htmlcoarsetok(s);
  }

  static public String pre_htmlencode(Object contents, Object... params) {
    return pre(htmlencode_noQuotes(str(contents)), params);
  }

  static public Object[] concatArrays(Object[]... arrays) {
    int l = 0;
    for (Object[] a : arrays) l += l(a);
    Object[] x = new Object[l];
    int i = 0;
    for (Object[] a : arrays) if (a != null) {
      System.arraycopy(a, 0, x, i, l(a));
      i += l(a);
    }
    return x;
  }

  static public String htextinput(String name, Object... params) {
    Object value = "";
    if (odd(l(params))) {
      value = params[0];
      params = dropFirst(params);
    }
    params = html_massageAutofocusParam(params);
    return tag("input", "", concatArrays(new Object[] { "type", "text", "name", name, "value", value }, params));
  }

  static public String htextinput(String name) {
    return htextinput(name, "");
  }

  static public <A extends Concept> A findConceptWhereCI(Class<A> c, Object... params) {
    return findConceptWhereCI(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> A findConceptWhereCI(Concepts concepts, Class<A> c, Object... params) {
    params = expandParams(c, params);
    if (concepts.ciFieldIndices != null)
      for (int i = 0; i < l(params); i += 2) {
        IFieldIndex<A, Object> index = concepts.getCIFieldIndex(c, (String) params[i]);
        if (index != null) {
          for (A x : index.getAll(params[i + 1])) if (checkConceptFieldsIC(x, params))
            return x;
          return null;
        }
      }
    for (A x : concepts.list(c)) if (checkConceptFieldsIC(x, params))
      return x;
    return null;
  }

  static public Concept findConceptWhereCI(Concepts concepts, String c, Object... params) {
    for (Concept x : concepts.list(c)) if (checkConceptFieldsIC(x, params))
      return x;
    return null;
  }

  static public <A extends Concept> A unlisted(Class<A> c, Object... args) {
    concepts_unlisted.set(true);
    try {
      return nuObject(c, args);
    } finally {
      concepts_unlisted.set(null);
    }
  }

  static public Concept unlisted(String name, Object... args) {
    Class<? extends Concept> cc = findClass(name);
    concepts_unlisted.set(true);
    try {
      return cc != null ? nuObject(cc) : new Concept(name);
    } finally {
      concepts_unlisted.set(null);
    }
  }

  static public <A, B> Pair<A, B> pair(A a, B b) {
    return new Pair(a, b);
  }

  static public <A> Pair<A, A> pair(A a) {
    return new Pair(a, a);
  }

  static public List callF_all(Collection l, Object... args) {
    return map(l, f -> callF(f, args));
  }

  static public Class<?> hotwire(String src) {
    assertFalse(_inCore());
    Class j = getJavaX();
    if (isAndroid()) {
      synchronized (j) {
        List<File> libraries = new ArrayList<File>();
        File srcDir = (File) call(j, "transpileMain", src, libraries);
        if (srcDir == null)
          throw fail("transpileMain returned null (src=" + quote(src) + ")");
        Object androidContext = get(j, "androidContext");
        return (Class) call(j, "loadx2android", srcDir, src);
      }
    } else {
      Class c = (Class) (call(j, "hotwire", src));
      hotwire_copyOver(c);
      return c;
    }
  }

  static public <A> A callMain(A c, String... args) {
    callOpt(c, "main", new Object[] { args });
    return c;
  }

  static public void callMain() {
    callMain(mc());
  }

  static public <A> List<A> reversedList(Iterable<A> l) {
    List<A> x = cloneList(l);
    Collections.reverse(x);
    return x;
  }

  static public String reversedString(String s) {
    return reverseString(s);
  }

  static public long round(double d) {
    return Math.round(d);
  }

  static public String round(String s) {
    return roundBracket(s);
  }

  static public String jextract(String pat, String s) {
    return jextract(pat, javaTok(s));
  }

  static public String jextract(String pat, List<String> tok) {
    List<String> tokpat = javaTok(pat);
    jfind_preprocess(tokpat);
    int i = jfind(tok, tokpat);
    if (i < 0)
      return null;
    int j = i + l(tokpat) - 2;
    return joinSubList(tok, i, j);
  }

  static public String repeat(char c, int n) {
    n = Math.max(n, 0);
    char[] chars = new char[n];
    for (int i = 0; i < n; i++) chars[i] = c;
    return new String(chars);
  }

  static public <A> List<A> repeat(A a, int n) {
    n = Math.max(n, 0);
    List<A> l = new ArrayList(n);
    for (int i = 0; i < n; i++) l.add(a);
    return l;
  }

  static public <A> List<A> repeat(int n, A a) {
    return repeat(a, n);
  }

  static public <A> String formatDoubleArrowPairs_horizontallyAligned(List<Pair<A, A>> l) {
    return asciiSideBySideWithSeparator(" => ", ll(lines(pairsA(l)), lines(pairsB(l))));
  }

  static public <A, B> List<Pair<A, B>> mapToPairs(Map<A, B> map) {
    List<Pair<A, B>> l = new ArrayList();
    if (map != null)
      for (Map.Entry<A, B> e : map.entrySet()) l.add(pair(e.getKey(), e.getValue()));
    return l;
  }

  static public <A> String replaceAngleBracketVars(String s, Map<String, A> map) {
    return empty(map) ? s : join(replaceAngleBracketVars(javaTokWithAngleBrackets(s), map));
  }

  static public <A> List<String> replaceAngleBracketVars(List<String> tok, Map<String, A> map) {
    if (empty(map))
      return tok;
    tok = cloneList(tok);
    for (int i = 1; i < l(tok); i += 2) {
      String t = tok.get(i);
      if (isAngleBracketed(t)) {
        A t2 = map.get(t);
        if (t2 == null)
          t2 = map.get(deAngleBracket(t));
        if (t2 != null)
          tok.set(i, str(t2));
      }
    }
    return tok;
  }

  static public String replaceAngleBracketVars(String s, Object... params) {
    return replaceAngleBracketVars(s, paramsToMap(params));
  }

  static public String curly(String s) {
    return optionalCurlyBrace(s);
  }

  static public <A, B> String mapPairsToLines(Iterable<Pair<A, B>> l, IF2<A, B, String> f) {
    return lines(mapPairsToList(l, f));
  }

  static public <A> List<Pair<A, A>> paramsToPairs(A... params) {
    List<Pair<A, A>> l = emptyList(l(params) / 2);
    for (int i = 0; i + 1 < l(params); i += 2) l.add(pair(params[i], params[i + 1]));
    return l;
  }

  static public <A> A oneOf(List<A> l) {
    return empty(l) ? null : l.get(new Random().nextInt(l.size()));
  }

  static public char oneOf(String s) {
    return empty(s) ? '?' : s.charAt(random(l(s)));
  }

  static public String oneOf(String... l) {
    return oneOf(asList(l));
  }

  static public <A> A collectionGet(Collection<A> c, int idx) {
    if (c == null || idx < 0 || idx >= l(c))
      return null;
    if (c instanceof List)
      return listGet((List<A>) c, idx);
    Iterator<A> it = c.iterator();
    for (int i = 0; i < idx; i++) if (it.hasNext())
      it.next();
    else
      return null;
    return it.hasNext() ? it.next() : null;
  }

  static public String htmlencode_noQuotes(String s) {
    if (s == null)
      return "";
    StringBuilder out = new StringBuilder(Math.max(16, s.length()));
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c == '<')
        out.append("&lt;");
      else if (c == '>')
        out.append("&gt;");
      else if (c > 127 || c == '&') {
        int cp = s.codePointAt(i);
        out.append("&#x");
        out.append(intToHex_flexLength(cp));
        out.append(';');
        i += Character.charCount(cp) - 1;
      } else
        out.append(c);
    }
    return out.toString();
  }

  static public <A> MultiMap<String, A> caseInsensitiveMultiMap() {
    MultiMap<String, A> mm = new MultiMap();
    mm.data = caseInsensitiveMap();
    return mm;
  }

  static public TreeSet<String> ciSet() {
    return caseInsensitiveSet();
  }

  static public String unnull(String s) {
    return s == null ? "" : s;
  }

  static public <A> Collection<A> unnull(Collection<A> l) {
    return l == null ? emptyList() : l;
  }

  static public <A> List<A> unnull(List<A> l) {
    return l == null ? emptyList() : l;
  }

  static public int[] unnull(int[] l) {
    return l == null ? emptyIntArray() : l;
  }

  static public char[] unnull(char[] l) {
    return l == null ? emptyCharArray() : l;
  }

  static public double[] unnull(double[] l) {
    return l == null ? emptyDoubleArray() : l;
  }

  static public <A, B> Map<A, B> unnull(Map<A, B> l) {
    return l == null ? emptyMap() : l;
  }

  static public <A> Iterable<A> unnull(Iterable<A> i) {
    return i == null ? emptyList() : i;
  }

  static public <A> A[] unnull(A[] a) {
    return a == null ? (A[]) emptyObjectArray() : a;
  }

  static public BitSet unnull(BitSet b) {
    return b == null ? new BitSet() : b;
  }

  static public Pt unnull(Pt p) {
    return p == null ? new Pt() : p;
  }

  static public <A, B> Pair<A, B> unnull(Pair<A, B> p) {
    return p != null ? p : new Pair(null, null);
  }

  static public long unnull(Long l) {
    return l == null ? 0L : l;
  }

  static public ArrayList emptyList() {
    return new ArrayList();
  }

  static public ArrayList emptyList(int capacity) {
    return new ArrayList(max(0, capacity));
  }

  static public ArrayList emptyList(Iterable l) {
    return l instanceof Collection ? emptyList(((Collection) l).size()) : emptyList();
  }

  static public ArrayList emptyList(Object[] l) {
    return emptyList(l(l));
  }

  static public <A> ArrayList<A> emptyList(Class<A> c) {
    return new ArrayList();
  }

  static public <A, B extends A> void addAll(Collection<A> c, Iterable<B> b) {
    if (c != null && b != null)
      for (A a : b) c.add(a);
  }

  static public <A, B extends A> boolean addAll(Collection<A> c, Collection<B> b) {
    return c != null && b != null && c.addAll(b);
  }

  static public <A, B extends A> boolean addAll(Collection<A> c, B... b) {
    return c != null && b != null && c.addAll(Arrays.asList(b));
  }

  static public <A, B> Map<A, B> addAll(Map<A, B> a, Map<? extends A, ? extends B> b) {
    if (a != null)
      a.putAll(b);
    return a;
  }

  static public <A extends Concept> Collection<A> findConceptsWhereCI(Class<A> c, Object... params) {
    return findConceptsWhereCI(db_mainConcepts(), c, params);
  }

  static public List<Concept> findConceptsWhereCI(String c, Object... params) {
    return findConceptsWhereCI(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> Collection<A> findConceptsWhereCI(Concepts concepts, Class<A> c, Object... params) {
    Collection<A> l = findConceptsWhereCI_noParent(concepts, c, params);
    if (concepts.parent == null)
      return l;
    return concatCollections_conservative(l, findConceptsWhereCI(concepts.parent, c, params));
  }

  static public <A extends Concept> Collection<A> findConceptsWhereCI_noParent(Concepts concepts, Class<A> c, Object... params) {
    params = expandParams(c, params);
    if (concepts.ciFieldIndices != null)
      for (int i = 0; i < l(params); i += 2) {
        IFieldIndex<A, Object> index = concepts.getCIFieldIndex(c, (String) params[i]);
        if (index != null) {
          Collection<A> rawList = index.getAll(params[i + 1]);
          params = dropEntryFromParams(params, i);
          if (params == null)
            return rawList;
          List<A> l = new ArrayList();
          for (A x : rawList) if (checkConceptFieldsIC(x, params))
            l.add(x);
          return l;
        }
      }
    return filterConceptsIC(concepts.list(c), params);
  }

  static public List<Concept> findConceptsWhereCI(Concepts concepts, String c, Object... params) {
    return filterConceptsIC(concepts.list(c), params);
  }

  static public Map similarEmptyMap(Map m) {
    if (m instanceof TreeMap)
      return new TreeMap(((TreeMap) m).comparator());
    if (m instanceof LinkedHashMap)
      return new LinkedHashMap();
    return new HashMap();
  }

  static public String tok_unCurlyBracket(String s) {
    return isCurlyBraced(s) ? join(dropFirstThreeAndLastThree(javaTok(s))) : s;
  }

  static public String simpleSpaces_javaTok(String s) {
    return join(simpleSpaces(javaTok(s)));
  }

  static public List<Integer> indicesOfAngleBracketVars(List<String> tok) {
    List<Integer> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) if (isAngleBracketVar(tok.get(i)))
      l.add(i);
    return l;
  }

  static public String deAngleBracket(String s) {
    return isAngleBracketed(s) ? dropFirstAndLast(s) : s;
  }

  static public boolean endsWithLetterOrDigit(String s) {
    return s != null && s.length() > 0 && Character.isLetterOrDigit(s.charAt(s.length() - 1));
  }

  static public void ping_okInCleanUp() {
    if (ping_pauseAll || ping_anyActions)
      ping_impl(true);
  }

  static public Object getThreadLocal(Object o, String name) {
    ThreadLocal t = (ThreadLocal) (getOpt(o, name));
    return t != null ? t.get() : null;
  }

  static public <A> A getThreadLocal(ThreadLocal<A> tl) {
    return tl == null ? null : tl.get();
  }

  static public <A> A getThreadLocal(ThreadLocal<A> tl, A defaultValue) {
    return or(getThreadLocal(tl), defaultValue);
  }

  static public ThreadLocal<Object> print_byThread_dontCreate() {
    return print_byThread;
  }

  static public boolean isFalse(Object o) {
    return eq(false, o);
  }

  static public String fixNewLines(String s) {
    int i = indexOf(s, '\r');
    if (i < 0)
      return s;
    int l = s.length();
    StringBuilder out = new StringBuilder(l);
    out.append(s, 0, i);
    for (; i < l; i++) {
      char c = s.charAt(i);
      if (c != '\r')
        out.append(c);
      else {
        out.append('\n');
        if (i + 1 < l && s.charAt(i + 1) == '\n')
          ++i;
      }
    }
    return out.toString();
  }

  static public void print_append(Appendable buf, String s, int max) {
    try {
      synchronized (buf) {
        buf.append(s);
        if (buf instanceof StringBuffer)
          rotateStringBuffer(((StringBuffer) buf), max);
        else if (buf instanceof StringBuilder)
          rotateStringBuilder(((StringBuilder) buf), max);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void vmBus_send(String msg, Object... args) {
    Object arg = vmBus_wrapArgs(args);
    pcallFAll(vm_busListeners_live(), msg, arg);
    pcallFAll(vm_busListenersByMessage_live().get(msg), msg, arg);
  }

  static public void vmBus_send(String msg) {
    vmBus_send(msg, (Object) null);
  }

  static public Class mc() {
    return main.class;
  }

  static public <A extends Concept> A uniqueConcept(Class<A> c, Object... params) {
    return uniqueConcept(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> A uniqueConcept(Concepts cc, Class<A> c, Object... params) {
    AutoCloseable __1 = tempDBLock(cc);
    try {
      params = expandParams(c, params);
      A x = findConceptWhere(cc, c, params);
      if (x == null) {
        x = unlisted(c);
        csetAll(x, params);
        cc.register(x);
      }
      return x;
    } finally {
      _close(__1);
    }
  }

  static public AutoCloseable tempDBLock(Concepts concepts) {
    return tempLock(concepts.lock);
  }

  static public AutoCloseable tempDBLock() {
    return tempDBLock(db_mainConcepts());
  }

  static public void typeWriterConsole() {
    if (isHeadless())
      return;
    Font f = typeWriterFont();
    consoleFont(f);
    consoleInputFont(f);
  }

  static public String hrefBlank(String link, Object contents, Object... params) {
    return tag("a", contents, concatArrays(new Object[] { "href", link, "target", "_blank" }, params));
  }

  static public String appendQueryToURL(String url, Map params) {
    if (url == null)
      return null;
    String data = makePostData(params);
    if (empty(data))
      return url;
    int idx = smartIndexOf(url, '#');
    String url2 = takeFirst(url, idx);
    return url2 + (url2.contains("?") ? "&" : "?") + data + substring(url, idx);
  }

  static public String appendQueryToURL(String url, Object... data) {
    return appendQueryToURL(url, litmap(data));
  }

  static public List<String> javaTokC(String s) {
    if (s == null)
      return null;
    int l = s.length();
    ArrayList<String> tok = new ArrayList();
    int i = 0;
    while (i < l) {
      int j = i;
      char c, d;
      while (j < l) {
        c = s.charAt(j);
        d = j + 1 >= l ? '\0' : s.charAt(j + 1);
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (c == '/' && d == '*') {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (c == '/' && d == '/') {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      d = i + 1 >= l ? '\0' : s.charAt(i + 1);
      if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          if (s.charAt(j) == opener || s.charAt(j) == '\n') {
            ++j;
            break;
          } else if (s.charAt(j) == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || "'".indexOf(s.charAt(j)) >= 0));
      else if (Character.isDigit(c)) {
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
        if (j < l && s.charAt(j) == 'L')
          ++j;
      } else if (c == '[' && d == '[') {
        do ++j; while (j + 1 < l && !s.substring(j, j + 2).equals("]]"));
        j = Math.min(j + 2, l);
      } else if (c == '[' && d == '=' && i + 2 < l && s.charAt(i + 2) == '[') {
        do ++j; while (j + 2 < l && !s.substring(j, j + 3).equals("]=]"));
        j = Math.min(j + 3, l);
      } else
        ++j;
      tok.add(javaTok_substringC(s, i, j));
      i = j;
    }
    return tok;
  }

  static public List<String> nlTok(String s) {
    return javaTokPlusPeriod(s);
  }

  static public List<String> sortedIgnoreCase(Collection<String> c) {
    List<String> l = cloneList(c);
    Collections.sort(l, caseInsensitiveComparator());
    return l;
  }

  static public <A> Chain<A> toChain(Iterable<A> l) {
    Iterator<A> it = iterator(l);
    if (!it.hasNext())
      return null;
    Chain<A> c = new Chain<>(it.next());
    Chain<A> last = c;
    int size = 1;
    while (it.hasNext()) {
      ++size;
      Chain x = new Chain(it.next());
      last.next = x;
      last = x;
    }
    Chain<A> x = c;
    while (x != null) {
      x.size = size--;
      x = x.next;
    }
    return c;
  }

  static public <A> Chain<A> chainPlus(Chain<A> chain, A a) {
    return new Chain<A>(a, chain);
  }

  static public <A> ReverseChain<A> chainPlus(ReverseChain<A> chain, A a) {
    return new ReverseChain<A>(chain, a);
  }

  static public <A> A last(List<A> l) {
    return empty(l) ? null : l.get(l.size() - 1);
  }

  static public char last(String s) {
    return empty(s) ? '#' : s.charAt(l(s) - 1);
  }

  static public int last(int[] a) {
    return l(a) != 0 ? a[l(a) - 1] : 0;
  }

  static public double last(double[] a) {
    return l(a) != 0 ? a[l(a) - 1] : 0;
  }

  static public <A> A last(A[] a) {
    return l(a) != 0 ? a[l(a) - 1] : null;
  }

  static public <A> A last(Iterator<A> it) {
    A a = null;
    while (it.hasNext()) {
      ping();
      a = it.next();
    }
    return a;
  }

  static public <A> A last(Collection<A> l) {
    if (l == null)
      return null;
    if (l instanceof List)
      return (A) last(((List) l));
    if (l instanceof SortedSet)
      return (A) last(((SortedSet) l));
    Iterator<A> it = iterator(l);
    A a = null;
    while (it.hasNext()) {
      ping();
      a = it.next();
    }
    return a;
  }

  static public <A> A last(SortedSet<A> l) {
    return l == null ? null : l.last();
  }

  static public <A> A last(ReverseChain<A> l) {
    return l == null ? null : l.element;
  }

  static public ThreadLocal htmlTable2_cellEncoder = new ThreadLocal();

  static public String htmlTable2(Object data, Object... __) {
    boolean htmlEncode = optPar("htmlEncode", __, true);
    boolean useBr = boolPar("useBr", __);
    Map<String, Object[]> paramsByColName = (Map<String, Object[]>) (optPar("paramsByColName", __));
    Object[] tableParams = (Object[]) (optPar("tableParams", __));
    Object[] trParams = (Object[]) (optPar("trParams", __));
    Object[] tdParams = (Object[]) (optPar("tdParams", __));
    Map<String, String> replaceHeaders = (Map<String, String>) (optPar("replaceHeaders", __));
    boolean noHeader = boolPar("noHeader", __);
    List<List<String>> rows = new ArrayList();
    List<String> cols = new ContentsIndexedList();
    if (data instanceof List) {
      for (Object x : (List) data) {
        try {
          rows.add(dataToTable_makeRow(x, cols));
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
    } else if (data instanceof Map) {
      Map map = (Map) data;
      for (Object key : map.keySet()) {
        Object value = map.get(key);
        rows.add(litlist(structureOrText(key), structureOrText(value)));
      }
    } else
      print("Unknown data type: " + data);
    int w = 0;
    for (List<String> row : rows) w = max(w, l(row));
    StringBuilder buf = new StringBuilder();
    buf.append(hopeningtag("table", paramsPlus(tableParams, "border", html_valueLessParam())) + "\n");
    if (!noHeader) {
      buf.append("<tr>\n");
      for (String cell : padList(cols, w, "")) buf.append("  <th>" + htmlTable2_encodeCell(getOrKeep(replaceHeaders, cell), htmlEncode, useBr) + "</th>\n");
      buf.append("</tr>\n");
    }
    for (List<String> row : rows) {
      buf.append(hopeningtag("tr", trParams));
      int i = 0;
      for (String cell : padList(row, w, "")) {
        String col = get(cols, i++);
        Object[] params = paramsPlus(tdParams, mapGet(paramsByColName, col));
        buf.append("  " + tag("td", htmlTable2_encodeCell(cell, htmlEncode, useBr), params) + "\n");
      }
      buf.append("</tr>\n");
    }
    buf.append("</table>\n");
    return buf.toString();
  }

  static public String htmlTable2_encodeCell(String cell, boolean useHtmlEncode, boolean useBr) {
    if (htmlTable2_cellEncoder.get() != null)
      return (String) callF(htmlTable2_cellEncoder.get(), cell);
    if (useHtmlEncode)
      cell = htmlEncode2(cell);
    if (useBr)
      cell = nlToBr(cell);
    return cell;
  }

  static public Object[] paramsPlus(Object[] a1, Object... a2) {
    if (a2 == null)
      return a1;
    if (a1 == null)
      return a2;
    if (l(a1) == 1 && a1[0] instanceof Map)
      return new Object[] { mapPlus((Map) a1[0], a2) };
    assertEvenLength(a1);
    assertEvenLength(a2);
    Map map = paramsToOrderedMap(a1);
    int n = l(a2);
    for (int i = 0; i < n; i += 2) {
      Object key = a2[i];
      if (key != null)
        map.put(key, a2[i + 1]);
    }
    return mapToParams(map);
  }

  static public Object[] paramsPlus(Map a1, Object... a2) {
    return paramsPlus(new Object[] { a1 }, a2);
  }

  static public boolean isJavaIdentifier(String s) {
    if (empty(s) || !Character.isJavaIdentifierStart(s.charAt(0)))
      return false;
    for (int i = 1; i < s.length(); i++) if (!Character.isJavaIdentifierPart(s.charAt(i)))
      return false;
    return true;
  }

  static public boolean isCodeSafe(String code) {
    return isSafeCodeFragment(code);
  }

  static public HashMap<Set<String>, Class> loadFunctions_cache = new HashMap();

  static public Lock loadFunctions_cached_lock = lock();

  static public boolean loadFunctions_preferDiskCache = false;

  static public Class loadFunctions_cached(String... functions) {
    return loadFunctions_cached(asList(functions));
  }

  static public Class loadFunctions_cached(Collection<String> functions) {
    TreeSet<String> functionSet = new TreeSet<String>(functions);
    Lock __0 = loadFunctions_cached_lock;
    lock(__0);
    try {
      Class c = loadFunctions_cache.get(functionSet);
      if (c != null)
        return c;
      String transpilation = null;
      if (l(functions) == 1 && isSlowMachine()) {
        String snippetID = stdFunctions_cached().get(first(functions));
        if (nempty(snippetID)) {
          if (!isMD5(getUpToDateSnippetTranspilationMD5(snippetID)))
            print("Slow machine mode: " + snippetID + " transpilation not up to date");
          else {
            transpilation = getServerTranspiledWithoutLibs(snippetID);
            print("Loaded server transpilation: " + snippetID);
          }
        }
      }
      if (transpilation == null) {
        String cached = getTranspiledStandardFunctionsIfCached(functionSet);
        if (cached != null && (loadFunctions_preferDiskCache || standardFunctionsCacheUpToDate(functionSet)))
          transpilation = cached;
      }
      if (transpilation != null) {
        print("Loading " + joinWithPlus(functionSet));
        c = veryQuickJava_finish(transpilation, emptyList());
      }
      if (c == null)
        c = loadFunctions(functionSet);
      loadFunctions_cache.put(functionSet, c);
      assertNotNull(loadFunctions_cache.get(functionSet));
      return c;
    } finally {
      unlock(__0);
    }
  }

  static public void loadFunctions_cached_clearCache() {
    Lock __1 = loadFunctions_cached_lock;
    lock(__1);
    try {
      loadFunctions_cache.clear();
    } finally {
      unlock(__1);
    }
  }

  static public void _onLoad_loadFunctions_cached() {
    ownResource(vmBus_onMessage("refreshedTranspiler", new Runnable() {

      public void run() {
        try {
          loadFunctions_clearCache();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "loadFunctions_clearCache();";
      }
    }));
  }

  static public Object evalWithTimeoutOrException(final Object f, int timeoutMS) {
    return evalWithTimeoutOrException(timeoutMS, f);
  }

  static public Object evalWithTimeoutOrException(int timeoutMS, final Object f) {
    return eitherAOpt(evalWithTimeout(timeoutMS, f));
  }

  static public Object evalWithTimeoutOrException(double timeoutSeconds, final Object f) {
    return eitherAOpt(evalWithTimeout(timeoutSeconds, f));
  }

  static public <A> A evalWithTimeoutOrException(int timeoutMS, F0<A> f) {
    Either<Object, Thread> e = evalWithTimeout(timeoutMS, f);
    if (e.isA())
      return (A) e.a();
    throw fail(trim("Timeout after " + timeoutMS + " ms. " + unnull(stackTraceForThread(e.b()))));
  }

  static public <A> A evalWithTimeoutOrException(double timeoutSeconds, F0<A> f) {
    return evalWithTimeoutOrException(toMS_int(timeoutSeconds), f);
  }

  static public <A> A evalWithTimeoutOrException(int timeoutMS, IF0<A> f) {
    return evalWithTimeoutOrException(timeoutMS, if0ToF0(f));
  }

  static public <A> A evalWithTimeoutOrException(double timeoutSeconds, IF0<A> f) {
    return evalWithTimeoutOrException(timeoutSeconds, if0ToF0(f));
  }

  static public F0 runnableToF0(Runnable r) {
    return r == null ? null : new F0<Object>() {

      public Object get() {
        try {
          r.run();
          return null;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "r.run(); null;";
      }
    };
  }

  static public Object call_withVarargs(Object o, String method, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        Class c = (Class) o;
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findStaticMethod(method, args);
        if (me != null)
          return invokeMethod(me, null, args);
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          methodSearch: for (Method m : methods) {
            {
              if (!(m.isVarArgs()))
                continue;
            }
            {
              if (!(isStaticMethod(m)))
                continue;
            }
            Object[] newArgs = massageArgsForVarArgsCall(m, args);
            if (newArgs != null)
              return invokeMethod(m, null, newArgs);
          }
        throw fail("Method " + c.getName() + "." + method + "(" + joinWithComma(classNames(args)) + ") not found");
      } else {
        Class c = o.getClass();
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(method, args);
        if (me != null)
          return invokeMethod(me, o, args);
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          methodSearch: for (Method m : methods) {
            {
              if (!(m.isVarArgs()))
                continue;
            }
            Object[] newArgs = massageArgsForVarArgsCall(m, args);
            if (newArgs != null)
              return invokeMethod(m, o, newArgs);
          }
        throw fail("Method " + c.getName() + "." + method + "(" + joinWithComma(classNames(args)) + ") not found");
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public CharSequence subCharSequence(CharSequence s, int x) {
    return subCharSequence(s, x, s == null ? 0 : s.length());
  }

  static public CharSequence subCharSequence(CharSequence s, int x, int y) {
    if (s == null)
      return null;
    if (x < 0)
      x = 0;
    if (x >= s.length())
      return "";
    if (y < x)
      y = x;
    if (y > s.length())
      y = s.length();
    return s.subSequence(x, y);
  }

  static volatile public PersistableThrowable lastException_lastException;

  static public PersistableThrowable lastException() {
    return lastException_lastException;
  }

  static public void lastException(Throwable e) {
    lastException_lastException = persistableThrowable(e);
  }

  static public String hideCredentials(URL url) {
    return url == null ? null : hideCredentials(str(url));
  }

  static public String hideCredentials(String url) {
    try {
      if (startsWithOneOf(url, "http://", "https://") && isAGIBlueDomain(hostNameFromURL(url)))
        return url;
    } catch (Throwable e) {
      print("HideCredentials", e);
    }
    return url.replaceAll("([&?])(_pass|key|cookie)=[^&\\s\"]*", "$1$2=<hidden>");
  }

  static public String hideCredentials(Object o) {
    return hideCredentials(str(o));
  }

  static public <A> List<A> synchroList() {
    return Collections.synchronizedList(new ArrayList<A>());
  }

  static public <A> List<A> synchroList(List<A> l) {
    return Collections.synchronizedList(l);
  }

  static public PersistableThrowable persistableThrowable(Throwable e) {
    return e == null ? null : new PersistableThrowable(e);
  }

  static public Throwable innerException(Throwable e) {
    return getInnerException(e);
  }

  static public boolean isInteger(String s) {
    int n = l(s);
    if (n == 0)
      return false;
    int i = 0;
    if (s.charAt(0) == '-')
      if (++i >= n)
        return false;
    while (i < n) {
      char c = s.charAt(i);
      if (c < '0' || c > '9')
        return false;
      ++i;
    }
    return true;
  }

  static public <A> List<A> concatLists_conservative(List<A> a, List<A> b) {
    if (empty(a))
      return b;
    if (empty(b))
      return a;
    return concatLists(a, b);
  }

  static public <A> List<A> concatLists_conservative(Collection<A> a, Collection<A> b) {
    if (empty(a) && b instanceof List)
      return ((List) b);
    if (empty(b) && a instanceof List)
      return ((List) a);
    return concatLists(a, b);
  }

  static public <A, B, C> List<Pair<A, C>> mapPairsB(final Object f, Iterable<Pair<A, B>> l) {
    return mapPairB(f, l);
  }

  static public <A, B, C> List<Pair<A, C>> mapPairsB(F1<B, C> f, Iterable<Pair<A, B>> l) {
    return mapPairB(f, l);
  }

  static public <A, B, C> List<Pair<A, C>> mapPairsB(IF1<B, C> f, Iterable<Pair<A, B>> l) {
    return mapPairB(f, l);
  }

  static public <A, B, C> List<Pair<A, C>> mapPairsB(Iterable<Pair<A, B>> l, IF1<B, C> f) {
    return mapPairB(l, f);
  }

  static public <A extends Concept> List<Pair<A, String>> cForwardRefsWithFieldNames(Concept c, Class<A> type) {
    return mapNonNulls(scanConceptForRefsWithFieldNames(c), p -> isInstanceOf(derefRef(p.a), type) ? pair((A) derefRef(p.a), p.b) : null);
  }

  static public <A extends Concept> List<Pair<A, String>> findBackRefsWithFieldNames(Concept c, Class<A> type) {
    List<Pair<A, String>> l = new ArrayList();
    if (c != null && c.backRefs != null)
      for (Concept.Ref r : cloneList(c.backRefs)) if (instanceOf(r.concept(), type))
        l.add(pair((A) r.concept(), fieldNameForConceptLink(r.concept(), c)));
    return l;
  }

  static public <A> List<A> withoutNulls(Collection<A> l) {
    if (l instanceof List)
      if (!containsNulls(((List) l)))
        return ((List) l);
    List<A> l2 = new ArrayList();
    for (A a : l) if (a != null)
      l2.add(a);
    return l2;
  }

  static public <A, B> Map<A, B> withoutNulls(Map<A, B> map) {
    Map<A, B> map2 = similarEmptyMap(map);
    for (A a : keys(map)) if (a != null) {
      B b = map.get(a);
      if (b != null)
        map2.put(a, b);
    }
    return map2;
  }

  static public <A> List<A> withoutNulls(A[] l) {
    List<A> l2 = new ArrayList();
    if (l != null)
      for (A a : l) if (a != null)
        l2.add(a);
    return l2;
  }

  static public int[] subArray(int[] b, int start, int end) {
    int[] x = new int[end - start];
    System.arraycopy(b, start, x, 0, end - start);
    return x;
  }

  static public byte[] subArray(byte[] b, int start, int end) {
    start = max(start, 0);
    end = min(end, l(b));
    if (start >= end)
      return new byte[0];
    byte[] x = new byte[end - start];
    System.arraycopy(b, start, x, 0, end - start);
    return x;
  }

  static public short[] subArray(short[] b, int start, int end) {
    if (start <= 0 && end >= l(b))
      return b;
    short[] x = new short[end - start];
    System.arraycopy(b, start, x, 0, end - start);
    return x;
  }

  static public float[] subArray(float[] b, int start, int end) {
    float[] x = new float[end - start];
    System.arraycopy(b, start, x, 0, end - start);
    return x;
  }

  static public Object[] subArray(Object[] b, int start) {
    return subArray(b, start, l(b));
  }

  static public Object[] subArray(Object[] b, int start, int end) {
    start = max(start, 0);
    end = min(end, l(b));
    if (start >= end)
      return new Object[0];
    Object[] x = new Object[end - start];
    System.arraycopy(b, start, x, 0, end - start);
    return x;
  }

  static public String joinNempties(String sep, Object... strings) {
    return joinStrings(sep, strings);
  }

  static public String joinNempties(String sep, Iterable strings) {
    return joinStrings(sep, strings);
  }

  static public List<String> javaTokWithAllPlusAngleBracketsC(String s) {
    return codeTokens(javaTokWithAllPlusAngleBrackets(s));
  }

  static public boolean isAngleBracketed(String s) {
    return s.startsWith("<") && s.endsWith(">");
  }

  static public <A> List<A> sortByCalculatedFieldDesc(Collection<A> c, final Object f) {
    return sortByCalculatedFieldDesc_inPlace(cloneList(c), f);
  }

  static public <A> List<A> sortByCalculatedFieldDesc(Object f, Collection<A> c) {
    return sortByCalculatedFieldDesc(c, f);
  }

  static public <A, B> List<A> sortByCalculatedFieldDesc(Iterable<A> c, IF1<A, B> f) {
    List<A> l = cloneList(c);
    sort(l, new Comparator<A>() {

      public int compare(A a, A b) {
        return stdcompare(f.get(b), f.get(a));
      }
    });
    return l;
  }

  static public <A, B> List<A> sortByCalculatedFieldDesc(IF1<A, B> f, Iterable<A> c) {
    return sortByCalculatedFieldDesc(c, f);
  }

  static public List<String> javaTokWithAllPlusAngleBrackets(String s) {
    return tok_combineAngleBrackets_keep(javaTokWithAllBrackets(s));
  }

  static public String joinMap(Object f, Iterable l) {
    return join(map(f, l));
  }

  static public String joinMap(Iterable l, Object f) {
    return joinMap(f, l);
  }

  static public <A> String joinMap(Iterable<A> l, IF1<A, String> f) {
    return joinMap(f, l);
  }

  static public <A> String joinMap(IF1<A, String> f, Iterable<A> l) {
    return join(map(f, l));
  }

  static public <A, B> String joinMap(String separator, Map<A, B> map, IF2<A, B, String> f) {
    return join(separator, map(map, f));
  }

  static public boolean eqOneOf(Object o, Object... l) {
    for (Object x : l) if (eq(o, x))
      return true;
    return false;
  }

  static public boolean match3(String pat, String s) {
    return match3(pat, s, null);
  }

  static public boolean match3(String pat, String s, Matches matches) {
    if (pat == null || s == null)
      return false;
    return match3(pat, parse3_cachedInput(s), matches);
  }

  static public boolean match3(String pat, List<String> toks, Matches matches) {
    List<String> tokpat = parse3_cachedPattern(pat);
    return match3(tokpat, toks, matches);
  }

  static public boolean match3(List<String> tokpat, List<String> toks, Matches matches) {
    String[] m = match2(tokpat, toks);
    if (m == null)
      return false;
    if (matches != null)
      matches.m = m;
    return true;
  }

  static public List<String> codeTokens(List<String> tok) {
    return codeTokensOnly(tok);
  }

  static public <A> List<A> collectInstances(Iterable i, Class<A> c) {
    List l = new ArrayList();
    if (i == null)
      return l;
    c = primitiveToBoxedTypeOpt(c);
    for (Object o : i) if (isInstance(c, o))
      l.add(o);
    return l;
  }

  static public <A> List<A> collectInstances(Class<A> c, Iterable i) {
    return collectInstances(i, c);
  }

  static public String shortenClassName(String name) {
    if (name == null)
      return null;
    int i = lastIndexOf(name, "$");
    if (i < 0)
      i = lastIndexOf(name, ".");
    return i < 0 ? name : substring(name, i + 1);
  }

  static public <A> Set<A> synchroWeakHashSet() {
    return Collections.newSetFromMap((Map) newWeakHashMap());
  }

  static public boolean instanceOf(Object o, String className) {
    if (o == null)
      return false;
    String c = o.getClass().getName();
    return eq(c, className) || eq(c, "main$" + className);
  }

  static public boolean instanceOf(Object o, Class c) {
    if (c == null)
      return false;
    return c.isInstance(o);
  }

  static public boolean instanceOf(Class c, Object o) {
    return instanceOf(o, c);
  }

  static public Q dm_ownQ(Q q) {
    q.rst.enter = dm_rEnter(dm_current_mandatory());
    dm_ownResource(q);
    return q;
  }

  static public Q startQ() {
    return new Q();
  }

  static public Q startQ(String name) {
    return new Q(name);
  }

  static public void dm_ownTimer(Object resource, Object closerHelper) {
    call(dm_current_generic(), "ownTimer", resource, closerHelper);
  }

  static public <A> A dm_ownTimer(A resource) {
    call(dm_current_generic(), "ownTimer", resource);
    return resource;
  }

  static public FixedRateTimer doEvery(long delay, final Object r) {
    return doEvery(delay, delay, r);
  }

  static public FixedRateTimer doEvery(long delay, long firstDelay, final Object r) {
    FixedRateTimer timer = new FixedRateTimer(shorten(programID() + ": " + r, 80));
    timer.scheduleAtFixedRate(smartTimerTask(r, timer, toInt(delay)), toInt(firstDelay), toInt(delay));
    return vmBus_timerStarted(timer);
  }

  static public FixedRateTimer doEvery(double initialSeconds, double delaySeconds, final Object r) {
    return doEvery(toMS(delaySeconds), toMS(initialSeconds), r);
  }

  static public FixedRateTimer doEvery(double delaySeconds, final Object r) {
    return doEvery(toMS(delaySeconds), r);
  }

  static public boolean isConceptFieldIndexed(Class<? extends Concept> c, String field) {
    return isConceptFieldIndexed(db_mainConcepts(), c, field);
  }

  static public boolean isConceptFieldIndexed(Concepts concepts, Class<? extends Concept> c, String field) {
    return concepts.getFieldIndex(c, field) != null;
  }

  static public <A extends Concept> ConceptFieldIndexCI<A> indexConceptFieldCI(Class<A> c, String field) {
    return indexConceptFieldCI(db_mainConcepts(), c, field);
  }

  static public <A extends Concept> ConceptFieldIndexCI<A> indexConceptFieldCI(Concepts concepts, Class<A> c, String field) {
    ConceptFieldIndexCI<A> idx = getConceptFieldCIIndex(concepts, c, field);
    return idx != null ? idx : new ConceptFieldIndexCI(concepts, c, field);
  }

  static public TreeSet<String> caseInsensitiveSet() {
    return caseInsensitiveSet_treeSet();
  }

  static public TreeSet<String> caseInsensitiveSet(Collection<String> c) {
    return caseInsensitiveSet_treeSet(c);
  }

  static public <A> TreeSet<A> treeSet() {
    return new TreeSet();
  }

  static public <A extends Concept> Collection<A> findConceptsWhere(Class<A> c, Object... params) {
    return findConceptsWhere(db_mainConcepts(), c, params);
  }

  static public Collection<Concept> findConceptsWhere(String c, Object... params) {
    return findConceptsWhere(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> Collection<A> findConceptsWhere(Concepts concepts, Class<A> c, Object... params) {
    ping();
    params = expandParams(c, params);
    if (concepts.fieldIndices != null)
      for (int i = 0; i < l(params); i += 2) {
        IFieldIndex<A, Object> index = concepts.getFieldIndex(c, (String) params[i]);
        if (index != null) {
          Collection<A> rawList = index.getAll(params[i + 1]);
          params = dropEntryFromParams(params, i);
          if (params == null)
            return rawList;
          List<A> l = new ArrayList();
          for (A x : rawList) if (checkConceptFields(x, params))
            l.add(x);
          return l;
        }
      }
    return filterConcepts(concepts.list(c), params);
  }

  static public Collection<Concept> findConceptsWhere(Concepts concepts, String c, Object... params) {
    return filterConcepts(concepts.list(c), params);
  }

  static public void deleteConcept(long id) {
    db_mainConcepts().deleteConcept(id);
  }

  static public void deleteConcept(Concepts concepts, long id) {
    concepts.deleteConcept(id);
  }

  static public void deleteConcept(Concept c) {
    if (c != null)
      c.delete();
  }

  static public void deleteConcept(Concept.Ref ref) {
    if (ref != null)
      deleteConcept(ref.get());
  }

  static public <A> HashSet<A> lithashset(A... items) {
    HashSet<A> set = new HashSet();
    for (A a : items) set.add(a);
    return set;
  }

  static public String trimSubstring(String s, int x) {
    return trim(substring(s, x));
  }

  static public String trimSubstring(String s, int x, int y) {
    return trim(substring(s, x, y));
  }

  static public String trimSubstring(String s, IntRange r) {
    return trim(substring(s, r));
  }

  static public String trimSubstring(int x, String s) {
    return trimSubstring(s, x);
  }

  static public int smartIndexOf(String s, String sub, int i) {
    if (s == null)
      return 0;
    i = s.indexOf(sub, min(i, l(s)));
    return i >= 0 ? i : l(s);
  }

  static public int smartIndexOf(String s, int i, char c) {
    return smartIndexOf(s, c, i);
  }

  static public int smartIndexOf(String s, char c, int i) {
    if (s == null)
      return 0;
    i = s.indexOf(c, min(i, l(s)));
    return i >= 0 ? i : l(s);
  }

  static public int smartIndexOf(String s, String sub) {
    return smartIndexOf(s, sub, 0);
  }

  static public int smartIndexOf(String s, char c) {
    return smartIndexOf(s, c, 0);
  }

  static public <A> int smartIndexOf(List<A> l, A sub) {
    return smartIndexOf(l, sub, 0);
  }

  static public <A> int smartIndexOf(List<A> l, int start, A sub) {
    return smartIndexOf(l, sub, start);
  }

  static public <A> int smartIndexOf(List<A> l, A sub, int start) {
    int i = indexOf(l, sub, start);
    return i < 0 ? l(l) : i;
  }

  static public String ahref_js(String js, Object contents, Object... params) {
    return empty(js) ? str(contents) : ahref("#", contents, paramsPlus(params, "onclick", addSuffix(trim(js), ";") + " return false;"));
  }

  static public <A> String joinWithComma(Collection<A> c) {
    return join(", ", c);
  }

  static public String joinWithComma(String... c) {
    return join(", ", c);
  }

  static public String joinWithComma(Pair p) {
    return p == null ? "" : joinWithComma(str(p.a), str(p.b));
  }

  static public String copyTextToClipboard(Object _text) {
    String text = str(_text);
    StringSelection selection = new StringSelection(text);
    Toolkit.getDefaultToolkit().getSystemClipboard().setContents(selection, selection);
    vmBus_send("newClipboardContents", text);
    return text;
  }

  static public <A extends Image> A copyImageToClipboard(A img) {
    TransferableImage trans = new TransferableImage(img);
    Toolkit.getDefaultToolkit().getSystemClipboard().setContents(trans, null);
    vmBus_send("newClipboardContents", img);
    print("Copied image to clipboard (" + img.getWidth(null) + "*" + img.getHeight(null) + " px)");
    return img;
  }

  static public File copyFileToClipboard(File f) {
    if (f == null)
      return null;
    Toolkit.getDefaultToolkit().getSystemClipboard().setContents(new FileTransferable(f), null);
    vmBus_send("newClipboardContents", f);
    return f;
  }

  static public String javascriptQuote(String s) {
    return quote(s);
  }

  static public String aGlobalID() {
    return randomID(globalIDLength());
  }

  static public String aGlobalID(Random random) {
    return randomID(random, globalIDLength());
  }

  static public String hstyle(Object contents) {
    return hcss(contents);
  }

  static public String replaceDollarVars(String s, Object... params) {
    if (empty(params))
      return s;
    Map<String, Object> vars = mapKeys(__53 -> dropDollarPrefix(__53), (Map<String, Object>) litcimap(params));
    return replaceDollarVars_dyn(s, var -> strOrNull(vars.get(var)));
  }

  static public String hdiv(Object contents, Object... params) {
    return div(contents, params);
  }

  static public String unicode_smallDownPointingTriangle() {
    return charToString(0x25BE);
  }

  static public String[] toStringArray(Collection<String> c) {
    String[] a = new String[l(c)];
    Iterator<String> it = c.iterator();
    for (int i = 0; i < l(a); i++) a[i] = it.next();
    return a;
  }

  static public String[] toStringArray(Object o) {
    if (o instanceof String[])
      return (String[]) o;
    else if (o instanceof Collection)
      return toStringArray((Collection<String>) o);
    else
      throw fail("Not a collection or array: " + getClassName(o));
  }

  static public <A> List<A> objectsWhereIC(Collection<A> c, Object... data) {
    if (c == null)
      return null;
    List<A> l = new ArrayList();
    for (A x : c) if (checkFieldsIC(x, data))
      l.add(x);
    return l;
  }

  static public <A, B> List<B> lambdaMap(IF1<A, B> f, Iterable<A> l) {
    return map(l, f);
  }

  static public <A, B> List<B> lambdaMap(IF1<A, B> f, A[] l) {
    return map(l, f);
  }

  static public <A> List<A> newSubListOrSame(List<A> l, int startIndex) {
    return newSubListOrSame(l, startIndex, l(l));
  }

  static public <A> List<A> newSubListOrSame(List<A> l, int startIndex, int endIndex) {
    if (l == null)
      return null;
    int n = l(l);
    startIndex = max(0, startIndex);
    endIndex = min(n, endIndex);
    if (startIndex >= endIndex)
      return ll();
    if (startIndex == 0 && endIndex == n)
      return l;
    return cloneList(l.subList(startIndex, endIndex));
  }

  static public <A> List<A> newSubListOrSame(List<A> l, IntRange r) {
    return newSubListOrSame(l, r.start, r.end);
  }

  static public String substring(String s, int x) {
    return substring(s, x, strL(s));
  }

  static public String substring(String s, int x, int y) {
    if (s == null)
      return null;
    if (x < 0)
      x = 0;
    int n = s.length();
    if (y < x)
      y = x;
    if (y > n)
      y = n;
    if (x >= y)
      return "";
    return s.substring(x, y);
  }

  static public String substring(String s, IntRange r) {
    return r == null ? null : substring(s, r.start, r.end);
  }

  static public String substring(String s, CharSequence l) {
    return substring(s, l(l));
  }

  static public int[] takeFirstOfIntArray(int[] b, int n) {
    return subIntArray(b, 0, n);
  }

  static public int[] takeFirstOfIntArray(int n, int[] b) {
    return takeFirstOfIntArray(b, n);
  }

  static public <A> Set<A> identityHashSet() {
    return Collections.newSetFromMap(new IdentityHashMap());
  }

  static public Object[] litObjectArray(Object... l) {
    return l;
  }

  static public boolean isAWTThread() {
    if (isAndroid())
      return false;
    if (isHeadless())
      return false;
    return isAWTThread_awt();
  }

  static public boolean isAWTThread_awt() {
    return SwingUtilities.isEventDispatchThread();
  }

  static public Object sleepQuietly_monitor = new Object();

  static public void sleepQuietly() {
    try {
      assertFalse(isAWTThread());
      synchronized (sleepQuietly_monitor) {
        sleepQuietly_monitor.wait();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> List<A> reverseInPlace(List<A> l) {
    return reverseList(l);
  }

  static public <A> List<A> sortByFieldInPlace(List<A> l, String field) {
    sort(l, fieldComparator(field));
    return l;
  }

  static public <A> List<A> sortByFieldInPlace(String field, List<A> l) {
    return sortByFieldInPlace(l, field);
  }

  static public <A> List<A> objectsWhereFieldGreaterThan(Collection<A> c, String field, Object value) {
    List<A> l = new ArrayList();
    for (A x : unnull(c)) if (cmp(getOpt(x, field), value) > 0)
      l.add(x);
    return l;
  }

  static public double elapsedSeconds(long time) {
    return toSeconds(sysNow() - time);
  }

  static public Object serveText(Object s) {
    return call(getMainBot(), "serveByteArray", toUtf8(str(s)), "text/plain; charset=utf8");
  }

  static public String jsonEncode_breakAtLevels(int levels, Object o) {
    StringBuilder buf = new StringBuilder();
    jsonEncode_breakAtLevels(levels, o, buf, 1);
    return str(buf);
  }

  static public void jsonEncode_breakAtLevels(int levels, Object o, StringBuilder buf, int level) {
    if (o == null)
      buf.append("null");
    else if (o instanceof String)
      buf.append(quote((String) o));
    else if (o instanceof Number || o instanceof Boolean)
      buf.append(o);
    else if (o instanceof Map) {
      Map map = (Map) o;
      buf.append("{");
      boolean first = true;
      for (Object key : keys(map)) {
        if (first)
          first = false;
        else
          buf.append(",");
        if (level == 1)
          buf.append("\n" + spaces(level * 2));
        buf.append(quote((String) key));
        buf.append(":");
        jsonEncode_breakAtLevels(levels, map.get(key), buf, level + 1);
      }
      if (level <= levels)
        buf.append("\n" + spaces((level - 1) * 2));
      buf.append("}");
    } else if (o instanceof Collection) {
      Collection l = (Collection) o;
      buf.append("[");
      boolean first = true;
      for (Object element : l) {
        if (first)
          first = false;
        else
          buf.append(",");
        if (level <= levels)
          buf.append("\n" + spaces(level * 2));
        jsonEncode_breakAtLevels(levels, element, buf, level + 1);
      }
      if (level <= levels)
        buf.append("\n" + spaces((level - 1) * 2));
      buf.append("]");
    } else
      throw fail("Unknown object for JSON encoding: " + className(o));
  }

  static public Object jsonPrepareData(Object... data) {
    if (l(data) == 1)
      return data[0];
    return litorderedmap(data);
  }

  static public String renderVars_str(Object... params) {
    List<String> l = new ArrayList();
    for (int i = 0; i + 1 < l(params); i += 2) l.add(params[i] + "=" + params[i + 1]);
    return trim(joinWithComma(l));
  }

  static public <A> A callPostProcessor(Object f, A a) {
    return f == null ? a : (A) callF(f, a);
  }

  static public <A> A callPostProcessor(IF1<A, A> f, A a) {
    return f == null ? a : f.get(a);
  }

  static public Object mainBot;

  static public Object getMainBot() {
    return mainBot;
  }

  static public int iceil(double d) {
    return (int) Math.ceil(d);
  }

  static public <A> TreeMap<String, A> ciMap() {
    return caseInsensitiveMap();
  }

  static public List collectField(Iterable c, String field) {
    List l = new ArrayList();
    if (c != null)
      for (Object a : c) l.add(getOpt(a, field));
    return l;
  }

  static public List collectField(String field, Iterable c) {
    return collectField(c, field);
  }

  static public <A> IterableIterator<A> iteratorFromFunction(final Object f) {
    class IFF extends IterableIterator<A> {

      public A a;

      public boolean done = false;

      public boolean hasNext() {
        getNext();
        return !done;
      }

      public A next() {
        getNext();
        if (done)
          throw fail();
        A _a = a;
        a = null;
        return _a;
      }

      public void getNext() {
        if (done || a != null)
          return;
        a = (A) callF(f);
        done = a == null;
      }
    }
    ;
    return new IFF();
  }

  static public <A> IterableIterator<A> iteratorFromFunction(final F0<A> f) {
    return iteratorFromFunction_f0(f);
  }

  static public <A, B, C> List<C> mapPairsToList(Iterable<Pair<A, B>> l, F2<A, B, C> f) {
    List<C> x = emptyList(l);
    if (l != null)
      for (Pair<A, B> p : l) x.add(callF(f, p.a, p.b));
    return x;
  }

  static public <A, B, C> List<C> mapPairsToList(Iterable<Pair<A, B>> l, IF2<A, B, C> f) {
    List<C> x = emptyList(l);
    if (l != null)
      for (Pair<A, B> p : l) x.add(f.get(p.a, p.b));
    return x;
  }

  static public <A, B> List mapPairsToList(Object f, Iterable<Pair<A, B>> l) {
    List x = emptyList(l);
    if (l != null)
      for (Pair<A, B> p : l) x.add(callF(f, p.a, p.b));
    return x;
  }

  static public boolean startsWith(String a, String b) {
    return a != null && a.startsWith(unnull(b));
  }

  static public boolean startsWith(String a, char c) {
    return nemptyString(a) && a.charAt(0) == c;
  }

  static public boolean startsWith(String a, String b, Matches m) {
    if (!startsWith(a, b))
      return false;
    m.m = new String[] { substring(a, strL(b)) };
    return true;
  }

  static public boolean startsWith(List a, List b) {
    if (a == null || listL(b) > listL(a))
      return false;
    for (int i = 0; i < listL(b); i++) if (neq(a.get(i), b.get(i)))
      return false;
    return true;
  }

  static public boolean endsWith(String a, String b) {
    return a != null && a.endsWith(b);
  }

  static public boolean endsWith(String a, char c) {
    return nempty(a) && lastChar(a) == c;
  }

  static public boolean endsWith(String a, String b, Matches m) {
    if (!endsWith(a, b))
      return false;
    m.m = new String[] { dropLast(l(b), a) };
    return true;
  }

  static public List<String> toLinesFullTrim(String s) {
    List<String> l = new ArrayList();
    for (String line : toLines(s)) if (nempty(line = trim(line)))
      l.add(line);
    return l;
  }

  static public List<String> toLinesFullTrim(File f) {
    List<String> l = new ArrayList();
    for (String line : linesFromFile(f)) if (nempty(line = trim(line)))
      l.add(line);
    return l;
  }

  static public Object withDBLock(Object r) {
    Lock __0 = db_mainConcepts().lock;
    lock(__0);
    try {
      return callF(r);
    } finally {
      unlock(__0);
    }
  }

  static public <A> A withDBLock(F0<A> r) {
    return (A) withDBLock((Object) r);
  }

  static public Object withDBLock(Concepts concepts, Object r) {
    Lock __1 = concepts.lock;
    lock(__1);
    try {
      return callF(r);
    } finally {
      unlock(__1);
    }
  }

  static public <A> A withDBLock(Concepts concepts, F0<A> r) {
    return (A) withDBLock(concepts, (Object) r);
  }

  static public <A> A withDBLock(Concept concept, IF0<A> r) {
    return (A) withDBLock(concept._concepts, r);
  }

  static public List<String> getPlural_specials = ll("sheep", "fish");

  static public String getPlural(String s) {
    if (containsIgnoreCase(getPlural_specials, s))
      return s;
    if (ewic(s, "y"))
      return dropSuffixIgnoreCase("y", s) + "ies";
    if (ewicOneOf(s, "ss", "ch"))
      return s + "es";
    if (ewic(s, "s"))
      return s;
    return s + "s";
  }

  static public String htmlEncode_nlToBr(String s) {
    return nlToBr(htmlEncode2(s));
  }

  static public String fromLines(Iterable lines) {
    StringBuilder buf = new StringBuilder();
    if (lines != null)
      for (Object line : lines) buf.append(str(line)).append('\n');
    return buf.toString();
  }

  static public String fromLines(String... lines) {
    return fromLines(asList(lines));
  }

  static public IterableIterator<String> toLines(File f) {
    return linesFromFile(f);
  }

  static public List<String> toLines(String s) {
    List<String> lines = new ArrayList<String>();
    if (s == null)
      return lines;
    int start = 0;
    while (true) {
      int i = toLines_nextLineBreak(s, start);
      if (i < 0) {
        if (s.length() > start)
          lines.add(s.substring(start));
        break;
      }
      lines.add(s.substring(start, i));
      if (s.charAt(i) == '\r' && i + 1 < s.length() && s.charAt(i + 1) == '\n')
        i += 2;
      else
        ++i;
      start = i;
    }
    return lines;
  }

  static public int toLines_nextLineBreak(String s, int start) {
    int n = s.length();
    for (int i = start; i < n; i++) {
      char c = s.charAt(i);
      if (c == '\r' || c == '\n')
        return i;
    }
    return -1;
  }

  static public <A> int nfilter(Iterable<A> c, IF1<A, Boolean> pred) {
    return nfilter(pred, c);
  }

  static public <A> int nfilter(IF1<A, Boolean> pred, Iterable<A> c) {
    int n = 0;
    if (c != null)
      for (A o : c) if (pred.get(o))
        ++n;
    return n;
  }

  static public int nfilter(Iterable c, Object pred) {
    int n = 0;
    if (c != null)
      for (Object o : c) if (isTrue(callF(pred, o)))
        ++n;
    return n;
  }

  static public int nfilter(Object pred, Iterable c) {
    return nfilter(c, pred);
  }

  static public String formatWithThousands(long l) {
    return formatWithThousandsSeparator(l);
  }

  static public double fraction(double d) {
    return d % 1;
  }

  static public String n_fancy2(long l, String singular, String plural) {
    return formatWithThousandsSeparator(l) + " " + trim(l == 1 ? singular : plural);
  }

  static public String n_fancy2(Collection l, String singular, String plural) {
    return n_fancy2(l(l), singular, plural);
  }

  static public String n_fancy2(Map m, String singular, String plural) {
    return n_fancy2(l(m), singular, plural);
  }

  static public String n_fancy2(Object[] a, String singular, String plural) {
    return n_fancy2(l(a), singular, plural);
  }

  static public String n_fancy2(MultiSet ms, String singular, String plural) {
    return n_fancy2(l(ms), singular, plural);
  }

  static public String[] asStringArray(Collection<String> c) {
    return toStringArray(c);
  }

  static public String[] asStringArray(Object o) {
    return toStringArray(o);
  }

  static public String toLower(String s) {
    return s == null ? null : s.toLowerCase();
  }

  static public char toLower(char c) {
    return Character.toLowerCase(c);
  }

  static public List<String> words(String s) {
    return codeTokens(dropPunctuation(javaTok(s)));
  }

  static public String ahref_unstyled(String link, Object contents, Object... params) {
    if (link == null)
      return str(contents);
    return ahref(link, contents, paramsPlus(params, "style", unparseCSSParameter(mapPlus_noOverwrite(parseCSSParameter(stringPar("style", params)), "text-decoration", "none", "color", "inherit"))));
  }

  static public String hsnippetimg(String imageID, Object... params) {
    return himg(snippetImageLink(imageID), params);
  }

  static public int calcHeight(int w, int h, int newWidth) {
    return iround(doubleRatio(h, w) * newWidth);
  }

  static public SimpleDateFormat simpleDateFormat_local(String format) {
    SimpleDateFormat sdf = new SimpleDateFormat(format);
    sdf.setTimeZone(localTimeZone());
    return sdf;
  }

  static public Object collectionMutex(List l) {
    return l;
  }

  static public Object collectionMutex(Object o) {
    if (o instanceof List)
      return o;
    String c = className(o);
    if (eq(c, "java.util.TreeMap$KeySet"))
      c = className(o = getOpt(o, "m"));
    else if (eq(c, "java.util.HashMap$KeySet"))
      c = className(o = get_raw(o, "this$0"));
    if (eqOneOf(c, "java.util.TreeMap$AscendingSubMap", "java.util.TreeMap$DescendingSubMap"))
      c = className(o = get_raw(o, "m"));
    return o;
  }

  static public boolean startsWithIgnoreCase(String a, String b) {
    return regionMatchesIC(a, 0, b, 0, b.length());
  }

  static public boolean isSubclass(Class a, Class b) {
    return a != null && b != null && b.isAssignableFrom(a);
  }

  static public List<String> javaTokForStructure(String s) {
    return javaTok_noMLS(s);
  }

  static public boolean eqGet(List l, int i, Object o) {
    return eq(get(l, i), o);
  }

  static public <A, B> boolean eqGet(Map<A, B> map, A key, Object o) {
    return eq(mapGet(map, key), o);
  }

  static public void replaceTokens(List<String> tok, int i, int j, String s) {
    clearAllTokens(tok, i + 1, j);
    tok.set(i, s);
  }

  static public void replaceTokens(List<String> tok, String s) {
    clearAllTokens(tok, 1, l(tok));
    tok.set(0, s);
  }

  static public String dropPrefix(String prefix, String s) {
    return s == null ? null : s.startsWith(prefix) ? s.substring(l(prefix)) : s;
  }

  static public boolean isOpeningBracket(String s) {
    return eqOneOf(s, "(", "{", "[");
  }

  static public boolean containsClosingBracket(List<String> l) {
    return any(__54 -> isClosingBracket(__54), l);
  }

  static public <A> List<A> subList(List<A> l, int startIndex) {
    return subList(l, startIndex, l(l));
  }

  static public <A> List<A> subList(int startIndex, int endIndex, List<A> l) {
    return subList(l, startIndex, endIndex);
  }

  static public <A> List<A> subList(List<A> l, int startIndex, int endIndex) {
    if (l == null)
      return null;
    int n = l(l);
    startIndex = Math.max(0, startIndex);
    endIndex = Math.min(n, endIndex);
    if (startIndex >= endIndex)
      return ll();
    if (startIndex == 0 && endIndex == n)
      return l;
    return l.subList(startIndex, endIndex);
  }

  static public <A> List<A> subList(List<A> l, IntRange r) {
    return subList(l, r.start, r.end);
  }

  static public String joinSubList(List<String> l, int i, int j) {
    return join(subList(l, i, j));
  }

  static public String joinSubList(List<String> l, int i) {
    return join(subList(l, i));
  }

  static public String joinSubList(List<String> l, IntRange r) {
    return r == null ? null : joinSubList(l, r.start, r.end);
  }

  static public String spaces(int n) {
    return rep(' ', n);
  }

  static public boolean isClosingBracket(String s) {
    return eqOneOf(s, ")", "}", "]");
  }

  static public Class __javax;

  static public Class getJavaX() {
    try {
      return __javax;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public ThreadLocal<Object> print_byThread() {
    synchronized (print_byThread_lock) {
      if (print_byThread == null)
        print_byThread = new ThreadLocal();
    }
    return print_byThread;
  }

  static public AutoCloseable tempInterceptPrint(F1<String, Boolean> f) {
    return tempSetThreadLocal(print_byThread(), f);
  }

  static public String getStackTrace2(Throwable e) {
    return hideCredentials(getStackTrace(unwrapTrivialExceptionWraps(e)) + replacePrefix("java.lang.RuntimeException: ", "FAIL: ", hideCredentials(str(innerException2(e)))) + "\n");
  }

  static public Object defaultDefaultClassFinder() {
    return new F1<String, Class>() {

      public Class get(String name) {
        {
          Class c = findClass_fullName(name);
          if (c != null)
            return c;
        }
        if (name.startsWith("loadableUtils.utils$")) {
          Class c = findClass_fullName("main" + name.substring(19));
          if (c != null)
            return c;
        } else if (name.startsWith("main$")) {
          Class c = findClass_fullName("loadableUtils.utils" + name.substring(4));
          if (c != null)
            return c;
        }
        return null;
      }
    };
  }

  static public String programIDWithCase() {
    return nempty(caseID()) ? programID() + "/" + quoteUnlessIdentifierOrInteger(caseID()) : programID();
  }

  static public void failIfUnlicensed() {
    assertTrue("license off", licensed());
  }

  static public <A extends Concept> int countConcepts(Concepts concepts, Class<A> c, Object... params) {
    return concepts.countConcepts(c, params);
  }

  static public <A extends Concept> int countConcepts(Class<A> c, Object... params) {
    return db_mainConcepts().countConcepts(c, params);
  }

  static public int countConcepts() {
    return db_mainConcepts().countConcepts();
  }

  static public int countConcepts(String className) {
    return db_mainConcepts().countConcepts(className);
  }

  static public <A extends Concept> int countConcepts(Concepts concepts, String className) {
    return concepts.countConcepts(className);
  }

  static public int countConcepts(Concepts concepts) {
    return concepts.countConcepts();
  }

  static public <A> List<A> sortedByCalculatedField(Iterable<A> c, Object f) {
    return sortByCalculatedField(c, f);
  }

  static public <A> List<A> sortedByCalculatedField(Object f, Iterable<A> c) {
    return sortedByCalculatedField(c, f);
  }

  static public <A, B> List<A> sortedByCalculatedField(IF1<A, B> f, Iterable<A> c) {
    return sortedByCalculatedField(c, f);
  }

  static public <A, B> List<A> sortedByCalculatedField(Iterable<A> c, IF1<A, B> f) {
    List<A> l = cloneList(c);
    sort(l, new Comparator<A>() {

      public int compare(A a, A b) {
        return stdcompare(f.get(a), f.get(b));
      }
    });
    return l;
  }

  static public String singleFieldName(Class c) {
    Set<String> l = listFields(c);
    if (l(l) != 1)
      throw fail("No single field found in " + c + " (have " + n(l(l), "fields") + ")");
    return first(l);
  }

  static public void warnIfOddCount(Object... list) {
    if (odd(l(list)))
      printStackTrace("Odd list size: " + list);
  }

  static public boolean checkConceptFieldsIC(Concept x, Object... data) {
    for (int i = 0; i < l(data); i += 2) if (!eqicOrEq(cget(x, (String) data[i]), deref(data[i + 1])))
      return false;
    return true;
  }

  static public boolean cicWithSmartWordBoundary(String a, String b) {
    return containsRegexpIC(a, phraseToRegExp(b));
  }

  static public boolean match3_startOrEndOfLine(String pat, String s, boolean startOfLine, boolean endOfLine) {
    if (startOfLine)
      return endOfLine ? match3(pat, s) : matchStart(pat, s);
    else
      return endOfLine ? matchEnd(pat, s) : find3(pat, s);
  }

  static public <A> boolean any(Object pred, Iterable<A> l) {
    if (l != null)
      for (A a : l) if (isTrue(callF(pred, a)))
        return true;
    return false;
  }

  static public <A> boolean any(IF1<A, Boolean> pred, Iterable<A> l) {
    return any((Object) pred, l);
  }

  static public <A> boolean any(Iterable<A> l, IF1<A, Boolean> pred) {
    return any(pred, l);
  }

  static public <A> boolean any(A[] l, IF1<A, Boolean> pred) {
    if (l != null)
      for (A a : l) if (pred.get(a))
        return true;
    return false;
  }

  static public boolean any(Iterable<Boolean> l) {
    if (l != null)
      for (Boolean a : l) if (isTrue(a))
        return true;
    return false;
  }

  static public String tok_deRoundBracket(String s) {
    return tok_isRoundBracketed(s) ? join(dropFirstThreeAndLastThree(javaTok(s))) : s;
  }

  static public List<String> javaTokWithBrackets(String s) {
    return javaTokPlusBrackets(s);
  }

  static public List<String> tok_splitAtComma(String s) {
    return tok_splitAtComma(javaTok(s));
  }

  static public List<String> tok_splitAtComma(List<String> tok) {
    List<String> out = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      int j = smartIndexOf(tok, ",", i);
      out.add(joinSubList(tok, i + 1, j - 1));
      i = j;
    }
    return out;
  }

  static public List<String> tok_splitAtPlus(String s) {
    return tok_splitAtPlus(javaTokWithAllBrackets_cached(s));
  }

  static public List<String> tok_splitAtPlus(List<String> tok) {
    return splitAtTokens(tok, "+");
  }

  static public <A> A[] dropLast(A[] a) {
    return dropLast(a, 1);
  }

  static public <A> A[] dropLast(A[] a, int n) {
    if (a == null)
      return null;
    n = Math.min(n, a.length);
    A[] b = arrayOfSameType(a, a.length - n);
    System.arraycopy(a, 0, b, 0, b.length);
    return b;
  }

  static public <A> List<A> dropLast(List<A> l) {
    return subList(l, 0, l(l) - 1);
  }

  static public <A> List<A> dropLast(int n, List<A> l) {
    return subList(l, 0, l(l) - n);
  }

  static public <A> List<A> dropLast(Iterable<A> l) {
    return dropLast(asList(l));
  }

  static public String dropLast(String s) {
    return substring(s, 0, l(s) - 1);
  }

  static public String dropLast(String s, int n) {
    return substring(s, 0, l(s) - n);
  }

  static public String dropLast(int n, String s) {
    return dropLast(s, n);
  }

  static public List<String> tok_splitAtAsterisk(String s) {
    return tok_splitAtAsterisk(javaTokWithAllBrackets_cached(s));
  }

  static public List<String> tok_splitAtAsterisk(List<String> tok) {
    return splitAtTokens(tok, "*");
  }

  static public double parseDouble(String s) {
    return Double.parseDouble(s);
  }

  static public <A> A second(List<A> l) {
    return get(l, 1);
  }

  static public <A> A second(Iterable<A> l) {
    if (l == null)
      return null;
    Iterator<A> it = iterator(l);
    if (!it.hasNext())
      return null;
    it.next();
    return it.hasNext() ? it.next() : null;
  }

  static public <A> A second(A[] bla) {
    return bla == null || bla.length <= 1 ? null : bla[1];
  }

  static public <A, B> B second(Pair<A, B> p) {
    return p == null ? null : p.b;
  }

  static public <A> A second(Producer<A> p) {
    if (p == null)
      return null;
    if (p.next() == null)
      return null;
    return p.next();
  }

  static public char second(String s) {
    return charAt(s, 1);
  }

  static public <A, B> B second(Either<A, B> e) {
    return e == null ? null : e.bOpt();
  }

  static public boolean isQuoted(String s) {
    if (isNormalQuoted(s))
      return true;
    return isMultilineQuoted(s);
  }

  static public List<String> tok_combineAngleBrackets_keep(List<String> tok) {
    List<String> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && eq(t, "<")) {
        int j = findEndOfAngleBracketPart(tok, i);
        l.add(joinSubList(tok, i, j));
        i = j - 1;
      } else
        l.add(t);
    }
    return l;
  }

  static public <A> ArrayList<Integer> intArrayToList(int[] a) {
    if (a == null)
      return null;
    return intArrayToList(a, 0, a.length);
  }

  static public <A> ArrayList<Integer> intArrayToList(int[] a, int from, int to) {
    if (a == null)
      return null;
    ArrayList<Integer> l = new ArrayList<>(to - from);
    for (int i = from; i < to; i++) l.add(a[i]);
    return l;
  }

  static public String angleBracket(String s) {
    return "<" + s + ">";
  }

  static public void withCancelPoint(VF1<CancelPoint> r) {
    CancelPoint cp = newCancelPoint();
    try {
      try {
        callF(r, cp);
      } catch (Throwable e) {
        e = innerException(e);
        if (!(e instanceof CancelToCancelPoint && ((CancelToCancelPoint) e).cp == cp))
          rethrow(e);
      }
    } finally {
      _close(cp);
    }
  }

  static public void withCancelPoint(IVF1<CancelPoint> r) {
    CancelPoint cp = newCancelPoint();
    try {
      try {
        r.get(cp);
      } catch (Throwable e) {
        e = innerException(e);
        if (!(e instanceof CancelToCancelPoint && ((CancelToCancelPoint) e).cp == cp))
          rethrow(e);
      }
    } finally {
      _close(cp);
    }
  }

  static public RuntimeException cancelTo(CancelPoint cp) {
    if (cp.closed)
      throw fail("cancel point closed");
    throw new CancelToCancelPoint(cp);
  }

  static public boolean flexMatchIC_iterate_debug = false;

  static public boolean flexMatchIC_iterate_useTokenization = true;

  static public void flexMatchIC_iterate(String pat, String input, VF1<Matches> onMatch, Object... __) {
    if (flexMatchIC_iterate_debug)
      print("flexMatchIC_iterate " + pat + " / " + input);
    IF1<String, List<String>> tokenizer = optPar("tokenizer", __, __1 -> javaTokNPunctuation_plusAsterisk(__1));
    flexMatchIC_iterate(pat, callTokenizer(tokenizer, pat), callTokenizer(tokenizer, input), onMatch, __);
  }

  static public void flexMatchIC_iterate(String pat, List<String> tokPat, List<String> tokInput, VF1<Matches> onMatch, Object... __) {
    List<Integer> varIndices = flexMatchIC_getVarIndices(tokPat, tokInput);
    if (varIndices == null)
      return;
    if (flexMatchIC_iterate_debug)
      printStructs("varIndices", varIndices, "tokPat", tokPat, "tokInput", tokInput);
    List<List<String>> spreadInputs = ai_spreadCertainIndices_2(tokPat, tokInput, varIndices);
    for (List<String> tok : spreadInputs) {
      if (flexMatchIC_iterate_debug)
        print("Testing spread " + sfu(codeTokens(tokPat)) + " with input: " + sfu(codeTokens(tok)));
      Matches m = new Matches();
      if (flexMatchIC_iterate_useTokenization ? match3(tokPat, tok, m) : match(pat, tok, m)) {
        if (flexMatchIC_iterate_debug)
          print("Got match: " + m);
        callF(onMatch, m);
      }
    }
  }

  static public Map<String, String> matchesToMapUsingVarList_ciMap(Matches m, List<String> vars) {
    if (m == null)
      return null;
    Map<String, String> map = ciMap();
    int n = min(l(m.m), l(vars));
    for (int i = 0; i < n; i++) if (!strictPutIC(map, vars.get(i), m.get(i)))
      return null;
    return map;
  }

  static public Map<String, Class> classForName_cache = synchroHashMap();

  static public Class classForName(String name) {
    try {
      if (classForName_cache == null)
        return Class.forName(name);
      Class c = classForName_cache.get(name);
      if (c == null)
        classForName_cache.put(name, c = Class.forName(name));
      return c;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Map<Class, Constructor> nuObjectWithoutArguments_cache = newDangerousWeakHashMap();

  static public Object nuObjectWithoutArguments(String className) {
    try {
      return nuObjectWithoutArguments(classForName(className));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A nuObjectWithoutArguments(Class<A> c) {
    try {
      if (nuObjectWithoutArguments_cache == null)
        return (A) nuObjectWithoutArguments_findConstructor(c).newInstance();
      Constructor m = nuObjectWithoutArguments_cache.get(c);
      if (m == null)
        nuObjectWithoutArguments_cache.put(c, m = nuObjectWithoutArguments_findConstructor(c));
      return (A) m.newInstance();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Constructor nuObjectWithoutArguments_findConstructor(Class c) {
    for (Constructor m : c.getDeclaredConstructors()) if (empty(m.getParameterTypes())) {
      makeAccessible(m);
      return m;
    }
    throw fail("No default constructor found in " + c.getName());
  }

  static public Field makeAccessible(Field f) {
    try {
      f.setAccessible(true);
    } catch (Throwable e) {
      vmBus_send("makeAccessible_error", e, f);
    }
    return f;
  }

  static public Method makeAccessible(Method m) {
    try {
      m.setAccessible(true);
    } catch (Throwable e) {
      vmBus_send("makeAccessible_error", e, m);
    }
    return m;
  }

  static public Constructor makeAccessible(Constructor c) {
    try {
      c.setAccessible(true);
    } catch (Throwable e) {
      vmBus_send("makeAccessible_error", e, c);
    }
    return c;
  }

  static public List<Class> getClasses(Object[] array) {
    List<Class> l = emptyList(l(array));
    for (Object o : array) l.add(_getClass(o));
    return l;
  }

  static public boolean isInstanceX(Class type, Object arg) {
    if (type == boolean.class)
      return arg instanceof Boolean;
    if (type == int.class)
      return arg instanceof Integer;
    if (type == long.class)
      return arg instanceof Long;
    if (type == float.class)
      return arg instanceof Float;
    if (type == short.class)
      return arg instanceof Short;
    if (type == char.class)
      return arg instanceof Character;
    if (type == byte.class)
      return arg instanceof Byte;
    if (type == double.class)
      return arg instanceof Double;
    return type.isInstance(arg);
  }

  static public String intToHex_flexLength(int i) {
    return Integer.toHexString(i);
  }

  static public List<String> dropAllTags(List<String> tok) {
    List<String> list = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && t.startsWith("<")) {
        list.set(list.size() - 1, list.get(list.size() - 1) + tok.get(i + 1));
        ++i;
      } else
        list.add(t);
    }
    return list;
  }

  static public String dropAllTags(String html) {
    return join(dropAllTags(htmlcoarsetok(html)));
  }

  static public Object[] arrayPlus(Object[] a1, Object... a2) {
    return concatArrays(a1, a2);
  }

  static public boolean regionMatches(String a, int offsetA, String b, int offsetB, int len) {
    return a != null && b != null && a.regionMatches(offsetA, b, offsetB, len);
  }

  static public boolean regionMatches(String a, int offsetA, String b) {
    return regionMatches(a, offsetA, b, 0, l(b));
  }

  static public String javaTok_substringN(String s, int i, int j) {
    if (i == j)
      return "";
    if (j == i + 1 && s.charAt(i) == ' ')
      return " ";
    return s.substring(i, j);
  }

  static public String javaTok_substringC(String s, int i, int j) {
    return s.substring(i, j);
  }

  static public List<String> javaTokWithExisting(String s, List<String> existing) {
    ++javaTok_n;
    int nExisting = javaTok_opt && existing != null ? existing.size() : 0;
    ArrayList<String> tok = existing != null ? new ArrayList(nExisting) : new ArrayList();
    int l = s.length();
    int i = 0, n = 0;
    while (i < l) {
      int j = i;
      char c, d;
      while (j < l) {
        c = s.charAt(j);
        d = j + 1 >= l ? '\0' : s.charAt(j + 1);
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (c == '/' && d == '*') {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (c == '/' && d == '/') {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      if (n < nExisting && javaTokWithExisting_isCopyable(existing.get(n), s, i, j))
        tok.add(existing.get(n));
      else
        tok.add(javaTok_substringN(s, i, j));
      ++n;
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      d = i + 1 >= l ? '\0' : s.charAt(i + 1);
      if (c == '\'' && Character.isJavaIdentifierStart(d) && i + 2 < l && "'\\".indexOf(s.charAt(i + 2)) < 0) {
        j += 2;
        while (j < l && Character.isJavaIdentifierPart(s.charAt(j))) ++j;
      } else if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          if (s.charAt(j) == opener) {
            ++j;
            break;
          } else if (s.charAt(j) == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || "'".indexOf(s.charAt(j)) >= 0));
      else if (Character.isDigit(c)) {
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
        if (j < l && s.charAt(j) == 'L')
          ++j;
      } else if (c == '[' && d == '[') {
        do ++j; while (j + 1 < l && !s.substring(j, j + 2).equals("]]"));
        j = Math.min(j + 2, l);
      } else if (c == '[' && d == '=' && i + 2 < l && s.charAt(i + 2) == '[') {
        do ++j; while (j + 2 < l && !s.substring(j, j + 3).equals("]=]"));
        j = Math.min(j + 3, l);
      } else
        ++j;
      if (n < nExisting && javaTokWithExisting_isCopyable(existing.get(n), s, i, j))
        tok.add(existing.get(n));
      else
        tok.add(javaTok_substringC(s, i, j));
      ++n;
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    javaTok_elements += tok.size();
    return tok;
  }

  static public boolean javaTokWithExisting_isCopyable(String t, String s, int i, int j) {
    return t.length() == j - i && s.regionMatches(i, t, 0, j - i);
  }

  static public Map<String, String[]> javaTokForJFind_array_cache = synchronizedMRUCache(1000);

  static public String[] javaTokForJFind_array(String s) {
    String[] tok = javaTokForJFind_array_cache.get(s);
    if (tok == null)
      javaTokForJFind_array_cache.put(s, tok = codeTokensAsStringArray(jfind_preprocess(javaTok(s))));
    return tok;
  }

  static public int findCodeTokens(List<String> tok, String... tokens) {
    return findCodeTokens(tok, 1, false, tokens);
  }

  static public int findCodeTokens(List<String> tok, boolean ignoreCase, String... tokens) {
    return findCodeTokens(tok, 1, ignoreCase, tokens);
  }

  static public int findCodeTokens(List<String> tok, int startIdx, boolean ignoreCase, String... tokens) {
    return findCodeTokens(tok, startIdx, ignoreCase, tokens, null);
  }

  static public HashSet<String> findCodeTokens_specials = lithashset("*", "<quoted>", "<id>", "<int>", "\\*");

  static public int findCodeTokens_bails, findCodeTokens_nonbails;

  static public interface findCodeTokens_Matcher {

    public boolean get(String token);
  }

  static public int findCodeTokens(List<String> tok, int startIdx, boolean ignoreCase, String[] tokens, Object condition) {
    int end = tok.size() - tokens.length * 2 + 2, nTokens = tokens.length;
    int i = startIdx | 1;
    String firstToken = tokens[0];
    if (!ignoreCase && !findCodeTokens_specials.contains(firstToken)) {
      while (i < end && !firstToken.equals(tok.get(i))) i += 2;
    }
    findCodeTokens_Matcher[] matchers = new findCodeTokens_Matcher[nTokens];
    for (int j = 0; j < nTokens; j++) {
      String p = tokens[j];
      findCodeTokens_Matcher matcher;
      if (p.equals("*"))
        matcher = t -> true;
      else if (p.equals("<quoted>"))
        matcher = t -> isQuoted(t);
      else if (p.equals("<id>"))
        matcher = t -> isIdentifier(t);
      else if (p.equals("<int>"))
        matcher = t -> isInteger(t);
      else if (p.equals("\\*"))
        matcher = t -> t.equals("*");
      else if (ignoreCase)
        matcher = t -> eqic(p, t);
      else
        matcher = t -> t.equals(p);
      matchers[j] = matcher;
    }
    outer: for (; i < end; i += 2) {
      for (int j = 0; j < nTokens; j++) if (!matchers[j].get(tok.get(i + j * 2)))
        continue outer;
      if (condition == null || checkTokCondition(condition, tok, i - 1))
        return i;
    }
    return -1;
  }

  static public String jreplaceExpandRefs(String s, List<String> tokref) {
    if (!contains(s, '$'))
      return s;
    List<String> tok = javaTok(s);
    for (int i = 1; i < l(tok); i += 2) {
      String t = tok.get(i);
      if (t.startsWith("$") && isInteger(t.substring(1))) {
        String x = tokref.get(-1 + parseInt(t.substring(1)) * 2);
        tok.set(i, x);
      } else if (t.equals("\\")) {
        tok.set(i, "");
        i += 2;
      }
    }
    return join(tok);
  }

  static public void clearAllTokens(List<String> tok) {
    for (int i = 0; i < tok.size(); i++) tok.set(i, "");
  }

  static public void clearAllTokens(List<String> tok, int i, int j) {
    for (; i < j; i++) tok.set(i, "");
  }

  static public List<String> reTok(List<String> tok) {
    replaceCollection(tok, javaTok(tok));
    return tok;
  }

  static public List<String> reTok(List<String> tok, int i) {
    return reTok(tok, i, i + 1);
  }

  static public List<String> reTok(List<String> tok, int i, int j) {
    i = max(i & ~1, 0);
    j = min(l(tok), j | 1);
    if (i >= j)
      return tok;
    List<String> t = javaTok(joinSubList(tok, i, j));
    replaceListPart(tok, i, j, t);
    return tok;
  }

  static public List<String> reTok(List<String> tok, IntRange r) {
    if (r != null)
      reTok(tok, r.start, r.end);
    return tok;
  }

  static public <A, B> void mapPut(Map<A, B> map, A key, B value) {
    if (map != null && key != null && value != null)
      map.put(key, value);
  }

  static public <A, B> void mapPut(Map<A, B> map, Pair<A, B> p) {
    if (map != null && p != null)
      map.put(p.a, p.b);
  }

  static public boolean neqic(String a, String b) {
    return !eqic(a, b);
  }

  static public boolean neqic(char a, char b) {
    return !eqic(a, b);
  }

  static public <A> A optPar(ThreadLocal<A> tl, A defaultValue) {
    A a = tl.get();
    if (a != null) {
      tl.set(null);
      return a;
    }
    return defaultValue;
  }

  static public <A> A optPar(ThreadLocal<A> tl) {
    return optPar(tl, null);
  }

  static public Object optPar(Object[] params, String name) {
    return optParam(params, name);
  }

  static public Object optPar(String name, Object[] params) {
    return optParam(params, name);
  }

  static public Object optPar(String name, Map params) {
    return optParam(name, params);
  }

  static public <A> A optPar(Object[] params, String name, A defaultValue) {
    return optParam(params, name, defaultValue);
  }

  static public <A> A optPar(String name, Object[] params, A defaultValue) {
    return optParam(params, name, defaultValue);
  }

  static public Object[] changeParam(Object[] params, String name, Object value) {
    if (eq(optPar(params, name), value))
      return params;
    Map map = paramsToOrderedMap(params);
    map.put(name, value);
    return mapToParams(map);
  }

  static public Object[] mapToParams(Map map) {
    return mapToObjectArray(map);
  }

  static public Object[] unrollParams(Object[] params) {
    if (l(params) == 1 && params[0] instanceof Map)
      return mapToParams((Map) params[0]);
    return params;
  }

  static public String htmlQuote(String s) {
    return "\"" + htmlencode_forParams(s) + "\"";
  }

  static public int toInt(Object o) {
    if (o == null)
      return 0;
    if (o instanceof Number)
      return ((Number) o).intValue();
    if (o instanceof String)
      return parseInt(((String) o));
    if (o instanceof Boolean)
      return boolToInt(((Boolean) o));
    throw fail("woot not int: " + getClassName(o));
  }

  static public int toInt(long l) {
    if (l != (int) l)
      throw fail("Too large for int: " + l);
    return (int) l;
  }

  static public String[] drop(int n, String[] a) {
    n = Math.min(n, a.length);
    String[] b = new String[a.length - n];
    System.arraycopy(a, n, b, 0, b.length);
    return b;
  }

  static public Object[] drop(int n, Object[] a) {
    n = Math.min(n, a.length);
    Object[] b = new Object[a.length - n];
    System.arraycopy(a, n, b, 0, b.length);
    return b;
  }

  static public <A> ArrayList<A> toList(A[] a) {
    return asList(a);
  }

  static public ArrayList<Integer> toList(int[] a) {
    return asList(a);
  }

  static public <A> ArrayList<A> toList(Set<A> s) {
    return asList(s);
  }

  static public <A> ArrayList<A> toList(Iterable<A> s) {
    return asList(s);
  }

  static public List<List<String>> findContainerTag(List<String> tok, String tag) {
    List<List<String>> l = new ArrayList();
    for (int i = 1; i < l(tok); i += 2) if (isOpeningTag(tok.get(i), tag)) {
      int j, level = 1;
      for (j = i + 2; j < tok.size(); j += 2) if (isOpeningTag(tok.get(j), tag))
        ++level;
      else if (isTag(tok.get(j), "/" + tag)) {
        --level;
        if (level == 0) {
          l.add(tok.subList(i - 1, j + 2));
          break;
        }
      }
      i = j;
    }
    return l;
  }

  static public List<List<String>> findContainerTag(String html, String tag) {
    return findContainerTag(htmlTok(html), tag);
  }

  static public String addLineBreak(String s) {
    return addSuffix(s, "\n");
  }

  static public String snippetRawURL_maxCache(String snippetID) {
    return snippetRawURL_maxCache(snippetID, null);
  }

  static public String snippetRawURL_maxCache(String snippetID, String contentType) {
    return "https://botcompany.de/serve/" + psI(snippetID) + htmlQuery("ct", contentType, "maxCache", 1);
  }

  static public BigInteger bigint(String s) {
    return new BigInteger(s);
  }

  static public BigInteger bigint(long l) {
    return BigInteger.valueOf(l);
  }

  static public String stringOptPar(Object[] params, String name) {
    return (String) optPar(params, name);
  }

  static public Object[] paramsWithout(Object[] a1, Object... keys) {
    if (l(a1) == 1 && a1[0] instanceof Map)
      return new Object[] { mapMinus((Map) a1[0], keys) };
    Set set = lithashset(keys);
    List l = new ArrayList();
    int n = l(a1);
    for (int i = 0; i < n; i += 2) if (i == n - 1)
      l.add(a1[i]);
    else if (!set.contains(a1[i])) {
      l.add(a1[i]);
      l.add(a1[i + 1]);
    }
    return toObjectArray(l);
  }

  static public <A> A lookupIgnoreCase(Map<String, A> map, String key) {
    for (String s : map.keySet()) if (eqic(s, key))
      return map.get(s);
    return null;
  }

  static public <A> List<A> lookupIgnoreCase(MultiMap<String, A> map, String key) {
    for (String s : map.keySet()) if (eqic(s, key))
      return map.get(s);
    return litlist();
  }

  static public <A> Set<A> synchroHashSet() {
    return Collections.synchronizedSet(new HashSet<A>());
  }

  static public Runnable _topLevelErrorHandling(final Runnable runnable) {
    final Object info = _threadInfo();
    return new Runnable() {

      public void run() {
        try {
          try {
            _threadInheritInfo(info);
            runnable.run();
          } catch (Throwable __e) {
            _handleException(__e);
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pcall {\r\n      _threadInheritInfo(info);\r\n      runnable.run();\r\n    }";
      }
    };
  }

  static public Runnable toRunnable(final Object o) {
    if (o instanceof Runnable)
      return (Runnable) o;
    return new Runnable() {

      public void run() {
        try {
          callF(o);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "callF(o)";
      }
    };
  }

  static public String defaultThreadName_name;

  static public String defaultThreadName() {
    if (defaultThreadName_name == null)
      defaultThreadName_name = "A thread by " + programID();
    return defaultThreadName_name;
  }

  static public Object pcallF(Object f, Object... args) {
    return pcallFunction(f, args);
  }

  static public <A> A pcallF(F0<A> f) {
    try {
      return f == null ? null : f.get();
    } catch (Throwable __e) {
      return null;
    }
  }

  static public <A, B> B pcallF(F1<A, B> f, A a) {
    try {
      return f == null ? null : f.get(a);
    } catch (Throwable __e) {
      return null;
    }
  }

  static public <A> void pcallF(VF1<A> f, A a) {
    try {
      {
        if (f != null)
          f.get(a);
      }
    } catch (Throwable __e) {
      _handleException(__e);
    }
  }

  static public <A, B> B pcallF(IF1<A, B> f, A a) {
    try {
      return f == null ? null : f.get(a);
    } catch (Throwable __e) {
      return null;
    }
  }

  static public <A> boolean setAdd(Collection<A> c, A a) {
    if (c == null || c.contains(a))
      return false;
    c.add(a);
    return true;
  }

  static public Runnable wrapAsActivity(Object r) {
    return toRunnable(r);
  }

  static public Map<Thread, Boolean> _registerThread_threads;

  static public Object _onRegisterThread;

  static public Thread _registerThread(Thread t) {
    if (_registerThread_threads == null)
      _registerThread_threads = newWeakHashMap();
    _registerThread_threads.put(t, true);
    vm_generalWeakSubMap("thread2mc").put(t, weakRef(mc()));
    callF(_onRegisterThread, t);
    return t;
  }

  static public void _registerThread() {
    _registerThread(Thread.currentThread());
  }

  static public void cancelThread(Thread t) {
    if (t == null)
      return;
    ping();
    synchronized (ping_actions) {
      ping_actions.put(t, "cancelled");
      ping_anyActions = true;
    }
  }

  static public int toInt_checked(long l) {
    if (l != (int) l)
      throw fail("Too large for int: " + l);
    return (int) l;
  }

  static public <A> A setThreadLocal(ThreadLocal<A> tl, A value) {
    if (tl == null)
      return null;
    A old = tl.get();
    tl.set(value);
    return old;
  }

  static public char charAt(String s, int i) {
    return s != null && i >= 0 && i < s.length() ? s.charAt(i) : '\0';
  }

  static public String firstJavaToken(String s) {
    if (s == null)
      return null;
    int l = s.length();
    int j = 0;
    char c, d;
    while (j < l) {
      c = s.charAt(j);
      d = j + 1 >= l ? '\0' : s.charAt(j + 1);
      if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
        ++j;
      else if (c == '/' && d == '*') {
        do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
        j = Math.min(j + 2, l);
      } else if (c == '/' && d == '/') {
        do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
      } else
        break;
    }
    if (j >= l)
      return null;
    int i = j;
    c = s.charAt(i);
    d = i + 1 >= l ? '\0' : s.charAt(i + 1);
    if (c == '\'' || c == '"') {
      char opener = c;
      ++j;
      while (j < l) {
        if (s.charAt(j) == opener || s.charAt(j) == '\n') {
          ++j;
          break;
        } else if (s.charAt(j) == '\\' && j + 1 < l)
          j += 2;
        else
          ++j;
      }
    } else if (Character.isJavaIdentifierStart(c))
      do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || "'".indexOf(s.charAt(j)) >= 0));
    else if (Character.isDigit(c)) {
      do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      if (j < l && s.charAt(j) == 'L')
        ++j;
    } else if (c == '[' && d == '[') {
      do ++j; while (j + 1 < l && !s.substring(j, j + 2).equals("]]"));
      j = Math.min(j + 2, l);
    } else if (c == '[' && d == '=' && i + 2 < l && s.charAt(i + 2) == '[') {
      do ++j; while (j + 2 < l && !s.substring(j, j + 3).equals("]=]"));
      j = Math.min(j + 3, l);
    } else
      ++j;
    return quickSubstring(s, i, j);
  }

  static public List<String> htmlcoarsetok(String s) {
    List<String> tok = new ArrayList();
    int l = s == null ? 0 : s.length();
    int i = 0;
    while (i < l) {
      int j = i;
      char c;
      while (j < l) {
        if (s.charAt(j) != '<')
          ++j;
        else if (s.substring(j, Math.min(j + 4, l)).equals("<!--")) {
          j = j + 4;
          do ++j; while (j < l && !s.substring(j, Math.min(j + 3, l)).equals("-->"));
          j = Math.min(j + 3, l);
        } else {
          char d = charAt(s, j + 1);
          if (d == '/' || isLetter(d))
            break;
          else
            ++j;
        }
      }
      tok.add(s.substring(i, j));
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      if (c == '<') {
        ++j;
        while (j < l && s.charAt(j) != '>') ++j;
        if (j < l)
          ++j;
      }
      tok.add(s.substring(i, j));
      i = j;
    }
    if ((tok.size() & 1) == 0)
      tok.add("");
    return tok;
  }

  static public String pre(Object contents, Object... params) {
    return tag("pre", contents, params);
  }

  static public void assertFalse(Object o) {
    if (!(eq(o, false)))
      throw fail(str(o));
  }

  static public boolean assertFalse(boolean b) {
    if (b)
      throw fail("oops");
    return b;
  }

  static public boolean assertFalse(String msg, boolean b) {
    if (b)
      throw fail(msg);
    return b;
  }

  static public boolean _inCore() {
    return false;
  }

  static public List hotwire_copyOver_after = synchroList();

  static public void hotwire_copyOver(Class c) {
    for (String field : ll("print_log", "print_silent", "androidContext", "_userHome")) setOptIfNotNull(c, field, getOpt(mc(), field));
    setOptIfNotNull(c, "mainBot", getMainBot());
    setOpt(c, "creator_class", new WeakReference(mc()));
    pcallFAll(hotwire_copyOver_after, c);
  }

  static public String reverseString(String s) {
    return new StringBuilder(s).reverse().toString();
  }

  static public String roundBracket(String s) {
    return "(" + s + ")";
  }

  static public int jfind(String s, String in) {
    return jfind(javaTok(s), in);
  }

  static public int jfind(List<String> tok, String in) {
    return jfind(tok, 1, in);
  }

  static public int jfind(List<String> tok, int startIdx, String in) {
    return jfind(tok, startIdx, in, null);
  }

  static public int jfind(List<String> tok, String in, Object condition) {
    return jfind(tok, 1, in, condition);
  }

  static public int jfind(List<String> tok, String in, ITokCondition condition) {
    return jfind(tok, 1, in, condition);
  }

  static public int jfind(List<String> tok, int startIndex, String in, ITokCondition condition) {
    return jfind(tok, startIndex, in, toTokCondition(condition));
  }

  static public int jfind(List<String> tok, int startIdx, String in, Object condition) {
    return jfind(tok, startIdx, javaTokForJFind_array(in), condition);
  }

  static public int jfind(List<String> tok, List<String> tokin) {
    return jfind(tok, 1, tokin);
  }

  static public int jfind(List<String> tok, int startIdx, List<String> tokin) {
    return jfind(tok, startIdx, tokin, null);
  }

  static public int jfind(List<String> tok, int startIdx, String[] tokinC, Object condition) {
    return findCodeTokens(tok, startIdx, false, tokinC, condition);
  }

  static public int jfind(List<String> tok, int startIdx, List<String> tokin, Object condition) {
    return jfind(tok, startIdx, codeTokensAsStringArray(tokin), condition);
  }

  static public List<String> jfind_preprocess(List<String> tok) {
    for (String type : litlist("quoted", "id", "int")) replaceSublist(tok, ll("<", "", type, "", ">"), ll("<" + type + ">"));
    replaceSublist(tok, ll("\\", "", "*"), ll("\\*"));
    return tok;
  }

  static public String asciiSideBySideWithSeparator(String sep, List<String> texts) {
    if (empty(texts))
      return asciiSideBySide(texts);
    int rows = maxLineCount(texts);
    List<String> out = new ArrayList();
    for (int i = 0; i < l(texts); i++) {
      if (i != 0)
        out.add(repLine(rows, sep));
      out.add(texts.get(i));
    }
    return asciiSideBySide(out);
  }

  static public <A, B> List<A> pairsA(Collection<Pair<A, B>> l) {
    return firstOfPairs(l);
  }

  static public <A, B> List<B> pairsB(Collection<Pair<A, B>> l) {
    return secondOfPairs(l);
  }

  static public String optionalCurlyBrace(String s) {
    return isCurlyBraced(s) ? s : curlyBrace(s);
  }

  static public <A> A listGet(List<A> l, int idx) {
    return l != null && idx >= 0 && idx < l(l) ? l.get(idx) : null;
  }

  static public <A> TreeMap<String, A> caseInsensitiveMap() {
    return new TreeMap(caseInsensitiveComparator());
  }

  static public int[] emptyIntArray_a = new int[0];

  static public int[] emptyIntArray() {
    return emptyIntArray_a;
  }

  static public char[] emptyCharArray = new char[0];

  static public char[] emptyCharArray() {
    return emptyCharArray;
  }

  static public double[] emptyDoubleArray = new double[0];

  static public double[] emptyDoubleArray() {
    return emptyDoubleArray;
  }

  static public Map emptyMap() {
    return new HashMap();
  }

  static public Object[] emptyObjectArray_a = new Object[0];

  static public Object[] emptyObjectArray() {
    return emptyObjectArray_a;
  }

  static public <A> Collection<A> concatCollections_conservative(Collection<A> a, Collection<A> b) {
    if (empty(a))
      return b;
    if (empty(b))
      return a;
    return concatLists(a, b);
  }

  static public Object[] dropEntryFromParams(Object[] params, int i) {
    int n = l(params);
    if (i < 0 || i >= n)
      return params;
    if (n == 2)
      return null;
    Object[] p = new Object[n - 2];
    System.arraycopy(params, 0, p, 0, i);
    System.arraycopy(params, i + 2, p, i, n - i - 2);
    return p;
  }

  static public boolean isCurlyBraced(String s) {
    List<String> tok = tok_combineCurlyBrackets_keep(javaTok(s));
    return l(tok) == 3 && startsWithAndEndsWith(tok.get(1), "{", "}");
  }

  static public <A> List<A> dropFirstThreeAndLastThree(List<A> l) {
    return dropFirstAndLast(3, l);
  }

  static public List<String> simpleSpaces(List<String> tok) {
    tok = cloneList(tok);
    for (int i = 0; i < l(tok); i += 2) tok.set(i, tok.get(i).equals("") ? "" : " ");
    return tok;
  }

  static public String simpleSpaces(String s) {
    return join(simpleSpaces(nlTok(s)));
  }

  static public boolean isAngleBracketVar(String s) {
    return isAngleBracketed(s);
  }

  static public <A> List<A> dropFirstAndLast(int n, List<A> l) {
    return cloneSubList(l, n, l(l) - n);
  }

  static public <A> List<A> dropFirstAndLast(int m, int n, List<A> l) {
    return cloneSubList(l, m, l(l) - n);
  }

  static public <A> List<A> dropFirstAndLast(List<A> l) {
    return dropFirstAndLast(1, l);
  }

  static public String dropFirstAndLast(String s) {
    return substring(s, 1, l(s) - 1);
  }

  static public void rotateStringBuffer(StringBuffer buf, int max) {
    try {
      if (buf == null)
        return;
      synchronized (buf) {
        if (buf.length() <= max)
          return;
        try {
          int newLength = max / 2;
          int ofs = buf.length() - newLength;
          String newString = buf.substring(ofs);
          buf.setLength(0);
          buf.append("[...] ").append(newString);
        } catch (Exception e) {
          buf.setLength(0);
        }
        buf.trimToSize();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void rotateStringBuilder(StringBuilder buf, int max) {
    try {
      if (buf == null)
        return;
      synchronized (buf) {
        if (buf.length() <= max)
          return;
        try {
          int newLength = max / 2;
          int ofs = buf.length() - newLength;
          String newString = buf.substring(ofs);
          buf.setLength(0);
          buf.append("[...] ").append(newString);
        } catch (Exception e) {
          buf.setLength(0);
        }
        buf.trimToSize();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Object vmBus_wrapArgs(Object... args) {
    return empty(args) ? null : l(args) == 1 ? args[0] : args;
  }

  static public void pcallFAll(Collection l, Object... args) {
    if (l != null)
      for (Object f : cloneList(l)) pcallF(f, args);
  }

  static public void pcallFAll(Iterator it, Object... args) {
    while (it.hasNext()) pcallF(it.next(), args);
  }

  static public Set vm_busListeners_live_cache;

  static public Set vm_busListeners_live() {
    if (vm_busListeners_live_cache == null)
      vm_busListeners_live_cache = vm_busListeners_live_load();
    return vm_busListeners_live_cache;
  }

  static public Set vm_busListeners_live_load() {
    return vm_generalIdentityHashSet("busListeners");
  }

  static public Map<String, Set> vm_busListenersByMessage_live_cache;

  static public Map<String, Set> vm_busListenersByMessage_live() {
    if (vm_busListenersByMessage_live_cache == null)
      vm_busListenersByMessage_live_cache = vm_busListenersByMessage_live_load();
    return vm_busListenersByMessage_live_cache;
  }

  static public Map<String, Set> vm_busListenersByMessage_live_load() {
    return vm_generalHashMap("busListenersByMessage");
  }

  static public <A extends Concept> A findConceptWhere(Class<A> c, Object... params) {
    return findConceptWhere(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> A findConceptWhere(Concepts concepts, Class<A> c, Object... params) {
    ping();
    params = expandParams(c, params);
    if (concepts.fieldIndices != null)
      for (int i = 0; i < l(params); i += 2) {
        IFieldIndex<A, Object> index = concepts.getFieldIndex(c, (String) params[i]);
        if (index != null) {
          for (A x : index.getAll(params[i + 1])) if (checkConceptFields(x, params))
            return x;
          return null;
        }
      }
    for (A x : concepts.list(c)) if (checkConceptFields(x, params))
      return x;
    return null;
  }

  static public Concept findConceptWhere(Concepts concepts, String c, Object... params) {
    for (Concept x : concepts.list(c)) if (checkConceptFields(x, params))
      return x;
    return null;
  }

  static public AutoCloseable tempLock(Lock lock) {
    return tempLock("", lock);
  }

  static public AutoCloseable tempLock(String purpose, Lock lock) {
    if (lock == null)
      return null;
    lock(lock);
    return new AutoCloseable() {

      public String toString() {
        return "unlock(lock);";
      }

      public void close() throws Exception {
        unlock(lock);
      }
    };
  }

  static public Font typeWriterFont() {
    return typeWriterFont(iround(14 * getSwingFontScale()));
  }

  static public Font typeWriterFont(int size) {
    return new Font("Courier", Font.PLAIN, size);
  }

  static public void consoleFont(Font font) {
    callOpt(getConsoleTextArea_gen(), "setFont", font);
  }

  static public void consoleInputFont(final Font f) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            JTextField input = consoleInputField();
            if (input != null) {
              input.setFont(f);
              revalidateFrame(input);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "JTextField input = consoleInputField();\r\n    if (input != null) {\r\n      inpu...";
        }
      });
    }
  }

  static public String makePostData(Map<Object, Object> map) {
    StringBuilder buf = new StringBuilder();
    for (Map.Entry<Object, Object> e : map.entrySet()) {
      String key = (String) (e.getKey());
      Object val = e.getValue();
      if (val != null) {
        String value = str(val);
        if (nempty(buf))
          buf.append("&");
        buf.append(urlencode(key)).append("=").append(urlencode((value)));
      }
    }
    return str(buf);
  }

  static public String makePostData(Object... params) {
    StringBuilder buf = new StringBuilder();
    int n = l(params);
    for (int i = 0; i + 1 < n; i += 2) {
      String key = (String) (params[i]);
      Object val = params[i + 1];
      if (val != null) {
        String value = str(val);
        if (nempty(buf))
          buf.append("&");
        buf.append(urlencode(key)).append("=").append(urlencode((value)));
      }
    }
    return str(buf);
  }

  static public List<String> javaTokPlusPeriod(String s) {
    List<String> tok = new ArrayList<String>();
    if (s == null)
      return tok;
    int l = s.length();
    int i = 0;
    while (i < l) {
      int j = i;
      char c;
      String cc;
      while (j < l) {
        c = s.charAt(j);
        cc = s.substring(j, Math.min(j + 2, l));
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (cc.equals("/*")) {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (cc.equals("//")) {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      tok.add(s.substring(i, j));
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      cc = s.substring(i, Math.min(i + 2, l));
      if (c == (char) 0x201C || c == (char) 0x201D)
        c = '"';
      if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          char _c = s.charAt(j);
          if (_c == (char) 0x201C || _c == (char) 0x201D)
            _c = '"';
          if (_c == opener) {
            ++j;
            break;
          } else if (s.charAt(j) == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
        if (j - 1 >= i + 1) {
          tok.add(opener + s.substring(i + 1, j - 1) + opener);
          i = j;
          continue;
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\''));
      else if (Character.isDigit(c))
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      else if (cc.equals("[[")) {
        do ++j; while (j + 1 < l && !s.substring(j, j + 2).equals("]]"));
        j = Math.min(j + 2, l);
      } else if (cc.equals("[=") && i + 2 < l && s.charAt(i + 2) == '[') {
        do ++j; while (j + 2 < l && !s.substring(j, j + 3).equals("]=]"));
        j = Math.min(j + 3, l);
      } else if (s.substring(j, Math.min(j + 3, l)).equals("..."))
        j += 3;
      else if (c == '$' || c == '#')
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      else
        ++j;
      tok.add(s.substring(i, j));
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    return tok;
  }

  static public Comparator<String> caseInsensitiveComparator() {
    return betterCIComparator();
  }

  static public boolean boolPar(ThreadLocal<Boolean> tl) {
    return boolOptParam(tl);
  }

  static public boolean boolPar(Object[] __, String name) {
    return boolOptParam(__, name);
  }

  static public boolean boolPar(String name, Object[] __) {
    return boolOptParam(__, name);
  }

  static public boolean boolPar(String name, Map __) {
    return boolOptParam(name, __);
  }

  static public boolean boolPar(String name, Object[] params, boolean defaultValue) {
    return optParam(params, name, defaultValue);
  }

  static public void dataToTable_dynSet(List l, int i, Object s) {
    while (i >= l.size()) l.add("");
    l.set(i, s);
  }

  static public List dataToTable_makeRow(Object x, List<String> cols) {
    if (instanceOf(x, "DynamicObject"))
      x = get_raw(x, "fieldValues");
    if (x instanceof Map) {
      Map m = (Map) x;
      List row = new ArrayList();
      for (Object _field : keysWithoutHidden(m)) {
        String field = (String) _field;
        Object value = m.get(field);
        int col = cols.indexOf(field);
        if (col < 0) {
          cols.add(field);
          col = cols.size() - 1;
        }
        dataToTable_dynSet(row, col, dataToTable_wrapValue(value));
      }
      return row;
    }
    if (x instanceof List)
      return allToString(((List) x));
    return litlist(structureOrText(x));
  }

  static public Object dataToTable_wrapValue(Object o) {
    if (o instanceof BufferedImage)
      return o;
    if (o instanceof MakesBufferedImage)
      return ((MakesBufferedImage) o).getBufferedImage();
    if (o instanceof RGBImage)
      return o;
    if (o instanceof Boolean)
      return o;
    return structureOrTextForUser(o);
  }

  static public <A> ArrayList<A> litlist(A... a) {
    ArrayList l = new ArrayList(a.length);
    for (A x : a) l.add(x);
    return l;
  }

  static public String structureOrText(Object o) {
    return o instanceof String ? (String) o : structure(o);
  }

  static public String hopeningtag(String tag, Map params) {
    return hopeningTag(tag, params);
  }

  static public String hopeningtag(String tag, Object... params) {
    return hopeningTag(tag, params);
  }

  static public <A> List<A> padList(List<A> l, int w) {
    return padList(l, w, null);
  }

  static public <A> List<A> padList(List<A> l, int w, A a) {
    if (l(l) >= w)
      return l;
    List<A> x = cloneList(l);
    while (l(x) < w) x.add(a);
    return x;
  }

  static public <A> A getOrKeep(Map<A, ? extends A> map, A a) {
    if (map == null)
      return a;
    A v = map.get(a);
    return v != null ? v : a;
  }

  static public String tr(Object contents) {
    return tag("tr", contents);
  }

  static public <A, B> B mapGet(Map<A, B> map, A a) {
    return map == null || a == null ? null : map.get(a);
  }

  static public <A, B> B mapGet(A a, Map<A, B> map) {
    return map == null || a == null ? null : map.get(a);
  }

  static public String nlToBr(String s) {
    return s.replace("\n", "<br>\n");
  }

  static public <A, B> Map<A, B> mapPlus(Map<A, B> m, Object... data) {
    m = cloneMap(m);
    litmap_impl(m, data);
    return m;
  }

  static public Object[] assertEvenLength(Object[] a) {
    assertTrue(even(l(a)));
    return a;
  }

  static public LinkedHashMap paramsToOrderedMap(Object... params) {
    return asLinkedHashMap(paramsToMap(params));
  }

  static public boolean isSafeCodeFragment(String code) {
    return eq("safe", joinWithComma(getCodeFragmentSafety(code)));
  }

  static public void lock(Lock lock) {
    try {
      ping();
      if (lock == null)
        return;
      try {
        lock.lockInterruptibly();
      } catch (InterruptedException e) {
        Object reason = vm_threadInterruptionReasonsMap().get(currentThread());
        print("Locking interrupted! Reason: " + strOr(reason, "Unknown"));
        printStackTrace(e);
        rethrow(e);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void lock(Lock lock, String msg) {
    print("Locking: " + msg);
    lock(lock);
  }

  static public void lock(Lock lock, String msg, long timeout) {
    print("Locking: " + msg);
    lockOrFail(lock, timeout);
  }

  static public ReentrantLock lock() {
    return fairLock();
  }

  static public boolean isSlowMachine() {
    return eq("1", trimLoadTextFile(javaxDataDir("is-slow-machine.txt")));
  }

  static public Map<String, String> stdFunctions_cached_map;

  static public Lock stdFunctions_cached_lock = lock();

  static public Map<String, String> stdFunctions_cached() {
    Lock __0 = stdFunctions_cached_lock;
    lock(__0);
    try {
      if (stdFunctions_cached_map == null)
        stdFunctions_cached_map = stdFunctions_uncached();
      return stdFunctions_cached_map;
    } finally {
      unlock(__0);
    }
  }

  static synchronized public void stdFunctions_clearCache() {
    stdFunctions_cached_map = null;
  }

  static public boolean isMD5(String s) {
    return l(s) == 32 && isLowerHexString(s);
  }

  static public String getUpToDateSnippetTranspilationMD5(String snippetID) {
    try {
      return loadPageSilently(tb_mainServer() + "/tb-int/get-transpilation-md5.php?id=" + psI(snippetID) + standardCredentials_noCookies());
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String getServerTranspiledWithoutLibs(String snippetID) {
    return dropFirstLine(getServerTranspiled2(snippetID));
  }

  static public String getTranspiledStandardFunctionsIfCached(TreeSet<String> functionSet) {
    try {
      File f = transpiledStandardFunctions_file(functionSet);
      return loadTextFile(f);
    } catch (Throwable __e) {
      return null;
    }
  }

  static public boolean standardFunctionsCacheUpToDate(TreeSet<String> functionSet) {
    File f = transpiledStandardFunctions_file(functionSet);
    long date = recommendedTranspilationDateForStandardFunctions(functionSet);
    return date != 0 && f.lastModified() >= date;
  }

  static public String joinWithPlus(Collection<String> c) {
    return join("+", c);
  }

  static public String joinWithPlus(String... c) {
    return join("+", c);
  }

  static public Class veryQuickJava_finish(String src, List<String> libs) {
    libs = cloneList(libs);
    src = findTranslators2(src, libs);
    String dehlibs = join(" ", libs);
    File bytecode = null;
    bytecode = javaCompile_overInternalBot(src, dehlibs);
    return hotwireCore(concatLists(ll(bytecode), loadLibraries(libs)));
  }

  static public boolean loadFunctions_debug = false;

  static public Object loadFunctions_veryQuickJava;

  static public Class loadFunctions(String... functions) {
    return loadFunctions(asList(functions));
  }

  static public Class loadFunctions(Collection<String> functions, Object... __) {
    print("Compiling " + joinWithPlus(functions));
    TreeSet<String> functionSet = new TreeSet<String>(functions);
    StringBuilder buf = stringBuilder(appendNewLineIfNempty(stringPar("header", __)));
    for (String s : functionSet) buf.append("please include function " + assertIdentifier(s) + ".\n");
    long time = sysNow();
    Class c;
    if (loadFunctions_veryQuickJava != null)
      c = (Class) callF(loadFunctions_veryQuickJava, str(buf));
    else {
      veryQuickJava_transpiled.set("");
      c = veryQuickJava(str(buf));
      saveTranspiledStandardFunctions(functionSet, getAndClearThreadLocal(veryQuickJava_transpiled));
    }
    if (loadFunctions_debug)
      done2_always(time, "loadFunctions: " + join(" ", functions));
    return c;
  }

  static public <A> A assertNotNull(A a) {
    assertTrue(a != null);
    return a;
  }

  static public <A> A assertNotNull(String msg, A a) {
    assertTrue(msg, a != null);
    return a;
  }

  static public void unlock(Lock lock, String msg) {
    if (lock == null)
      return;
    lock.unlock();
    print("Unlocked: " + msg);
  }

  static public void unlock(Lock lock) {
    if (lock == null)
      return;
    lock.unlock();
  }

  static public void ownResource(AutoCloseable c) {
    _registerAutoCloseable(c);
  }

  static public <A> AutoCloseable vmBus_onMessage(final String msg, final VF1<A> onMessage) {
    Map<String, Set> map = vm_busListenersByMessage_live();
    synchronized (map) {
      Set listeners = map.get(msg);
      if (listeners == null)
        map.put(msg, listeners = syncIdentityHashSet());
      return tempAdd(listeners, new VF2<String, Object>() {

        public void get(String _msg, Object arg) {
          try {
            callF(onMessage, arg);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "callF(onMessage, arg)";
        }
      });
    }
  }

  static public <A, B> AutoCloseable vmBus_onMessage(String msg, final VF2<A, B> onMessage) {
    return vmBus_onMessage(msg, new VF1<Object[]>() {

      public void get(Object[] o) {
        try {
          callF(onMessage, first(o), second(o));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "callF(onMessage, first(o), second(o));";
      }
    });
  }

  static public <A, B> AutoCloseable vmBus_onMessage(String msg, final IVF2<A, B> onMessage) {
    return vmBus_onMessage(msg, new VF1<Object[]>() {

      public void get(Object[] o) {
        try {
          callF(onMessage, first(o), second(o));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "callF(onMessage, first(o), second(o));";
      }
    });
  }

  static public AutoCloseable vmBus_onMessage(String msg, Runnable onMessage) {
    return vmBus_onMessage(msg, runnableToVF1(onMessage));
  }

  static public void loadFunctions_clearCache() {
    callOptMC("loadFunctions_cached_clearCache");
  }

  static public <A, B> A eitherAOpt(Either<A, B> e) {
    return e != null && e.isA() ? e.a() : null;
  }

  static public String stackTraceForThread(Thread t) {
    return t == null ? null : lines(t.getStackTrace());
  }

  static public <A> F0<A> if0ToF0(IF0<A> f) {
    return f == null ? null : new F0<A>() {

      public A get() {
        try {
          return f.get();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret f.get();";
      }
    };
  }

  static final public Map<Class, _MethodCache> callOpt_cache = newDangerousWeakHashMap();

  static public Object callOpt_cached(Object o, String methodName, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        Class c = (Class) o;
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(methodName, args);
        if (me == null || (me.getModifiers() & Modifier.STATIC) == 0)
          return null;
        return invokeMethod(me, null, args);
      } else {
        Class c = o.getClass();
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(methodName, args);
        if (me == null)
          return null;
        return invokeMethod(me, o, args);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public _MethodCache callOpt_getCache(Class c) {
    synchronized (callOpt_cache) {
      _MethodCache cache = callOpt_cache.get(c);
      if (cache == null)
        callOpt_cache.put(c, cache = new _MethodCache(c));
      return cache;
    }
  }

  static public Object invokeMethod(Method m, Object o, Object... args) {
    try {
      try {
        return m.invoke(o, args);
      } catch (InvocationTargetException e) {
        throw rethrow(getExceptionCause(e));
      } catch (IllegalArgumentException e) {
        throw new IllegalArgumentException(e.getMessage() + " - was calling: " + m + ", args: " + joinWithSpace(classNames(args)));
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isStaticMethod(Method m) {
    return methodIsStatic(m);
  }

  static public Object[] massageArgsForVarArgsCall(Method m, Object[] args) {
    Class<?>[] types = m.getParameterTypes();
    int n = types.length - 1, nArgs = args.length;
    if (nArgs < n)
      return null;
    for (int i = 0; i < n; i++) if (!argumentCompatibleWithType(args[i], types[i]))
      return null;
    Class varArgType = types[n].getComponentType();
    for (int i = n; i < nArgs; i++) if (!argumentCompatibleWithType(args[i], varArgType))
      return null;
    Object[] newArgs = new Object[n + 1];
    arraycopy(args, 0, newArgs, 0, n);
    Object[] varArgs = arrayOfType(varArgType, nArgs - n);
    arraycopy(args, n, varArgs, 0, nArgs - n);
    newArgs[n] = varArgs;
    return newArgs;
  }

  static public List<String> classNames(Collection l) {
    return getClassNames(l);
  }

  static public List<String> classNames(Object[] l) {
    return getClassNames(Arrays.asList(l));
  }

  static public boolean startsWithOneOf(String s, String... l) {
    for (String x : l) if (startsWith(s, x))
      return true;
    return false;
  }

  static public boolean startsWithOneOf(String s, Matches m, String... l) {
    for (String x : l) if (startsWith(s, x, m))
      return true;
    return false;
  }

  static public boolean isAGIBlueDomain(String domain) {
    return domainIsUnder(domain, theAGIBlueDomain());
  }

  static public String hostNameFromURL(String url) {
    try {
      return new URL(url).getHost();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Throwable getInnerException(Throwable e) {
    if (e == null)
      return null;
    while (e.getCause() != null) e = e.getCause();
    return e;
  }

  static public Throwable getInnerException(Runnable r) {
    return getInnerException(getException(r));
  }

  static public <A, B, C> List<Pair<A, C>> mapPairB(final Object f, Iterable<Pair<A, B>> l) {
    return map(l, new F1<Pair<A, B>, Pair<A, C>>() {

      public Pair<A, C> get(Pair<A, B> p) {
        try {
          return p == null ? null : pair(p.a, (C) callF(f, p.b));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "p == null ? null : pair(p.a, (C) callF(f, p.b))";
      }
    });
  }

  static public <A, B, C> List<Pair<A, C>> mapPairB(final F1<B, C> f, Iterable<Pair<A, B>> l) {
    return mapPairB((Object) f, l);
  }

  static public <A, B, C> List<Pair<A, C>> mapPairB(final IF1<B, C> f, Iterable<Pair<A, B>> l) {
    return mapPairB((Object) f, l);
  }

  static public <A, B, C> List<Pair<A, C>> mapPairB(Iterable<Pair<A, B>> l, IF1<B, C> f) {
    return mapPairB((Object) f, l);
  }

  static public List mapNonNulls(Iterable l, Object f) {
    return mapNonNulls(f, l);
  }

  static public List mapNonNulls(Object f, Iterable l) {
    List x = new ArrayList();
    if (l != null)
      for (Object o : l) addIfNotNull(x, callF(f, o));
    return x;
  }

  static public List mapNonNulls(Object f, Object[] l) {
    List x = new ArrayList();
    if (l != null)
      for (Object o : l) addIfNotNull(x, callF(f, o));
    return x;
  }

  static public <A, B> List<B> mapNonNulls(Iterable<A> l, F1<A, B> f) {
    return mapNonNulls(f, l);
  }

  static public <A, B> List<B> mapNonNulls(F1<A, B> f, Iterable<A> l) {
    List x = new ArrayList();
    if (l != null)
      for (Object o : l) addIfNotNull(x, callF(f, o));
    return x;
  }

  static public <A, B> List<B> mapNonNulls(A[] l, IF1<A, B> f) {
    return mapNonNulls(f, l);
  }

  static public <A, B> List<B> mapNonNulls(Iterable<A> l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) addIfNotNull(x, f.get(o));
    return x;
  }

  static public <A, B> List<B> mapNonNulls(IF1<A, B> f, Iterable<A> l) {
    return mapNonNulls(l, f);
  }

  static public List<Pair<Concept.Ref, String>> scanConceptForRefsWithFieldNames(Concept c) {
    List<Pair<Concept.Ref, String>> refs = new ArrayList();
    if (c != null)
      for (Map.Entry<? extends String, ? extends Object> __0 : _entrySet(objectToMap(c))) {
        String field = __0.getKey();
        Object o = __0.getValue();
        if (o instanceof Concept.Ref)
          refs.add(pair(((Concept.Ref) o), field));
        else if (o instanceof Concept.RefL)
          for (int i = 0; i < l(((Concept.RefL) o).l); i++) refs.add(pair((Concept.Ref) ((Concept.RefL) o).l.get(i), field + "[" + (i + 1) + "]"));
      }
    return refs;
  }

  static public boolean isInstanceOf(Object o, Class type) {
    return type.isInstance(o);
  }

  static public Object derefRef(Object o) {
    if (o instanceof Concept.Ref)
      o = ((Concept.Ref) o).get();
    return o;
  }

  static public <A extends Concept> A derefRef(Concept.Ref<A> r) {
    return r == null ? null : r.get();
  }

  static public String fieldNameForConceptLink(Concept from, Concept to) {
    for (Pair<Concept.Ref, String> p : scanConceptForRefsWithFieldNames(from)) if (derefRef(p.a) == to)
      return p.b;
    return null;
  }

  static public boolean containsNulls(Collection c) {
    return contains(c, null);
  }

  static public String joinStrings(String sep, Object... strings) {
    return joinStrings(sep, Arrays.asList(strings));
  }

  static public String joinStrings(String sep, Iterable strings) {
    StringBuilder buf = new StringBuilder();
    for (Object o : unnull(strings)) {
      String s = strOrNull(o);
      if (nempty(s)) {
        if (nempty(buf))
          buf.append(sep);
        buf.append(s);
      }
    }
    return str(buf);
  }

  static public <A> List<A> sortByCalculatedFieldDesc_inPlace(List<A> l, final Object f) {
    sort(l, new Comparator<A>() {

      public int compare(A b, A a) {
        return stdcompare((Object) callF(f, a), (Object) callF(f, b));
      }
    });
    return l;
  }

  static public <A> List<A> sortByCalculatedFieldDesc_inPlace(Object f, List<A> c) {
    return sortByCalculatedFieldDesc_inPlace(c, f);
  }

  static public <T> void sort(T[] a, Comparator<? super T> c) {
    if (a != null)
      Arrays.sort(a, c);
  }

  static public <T> void sort(T[] a) {
    if (a != null)
      Arrays.sort(a);
  }

  static public void sort(int[] a) {
    if (a != null)
      Arrays.sort(a);
  }

  static public <T> void sort(List<T> a, Comparator<? super T> c) {
    if (a != null)
      Collections.sort(a, c);
  }

  static public void sort(List a) {
    if (a != null)
      Collections.sort(a);
  }

  static public int stdcompare(Number a, Number b) {
    return cmp(a, b);
  }

  static public int stdcompare(String a, String b) {
    return cmp(a, b);
  }

  static public int stdcompare(long a, long b) {
    return a < b ? -1 : a > b ? 1 : 0;
  }

  static public int stdcompare(Object a, Object b) {
    return cmp(a, b);
  }

  static public List<String> javaTokWithAllBrackets(String s) {
    return javaTokPlusBrackets2(s);
  }

  static public Map<String, List<String>> parse3_cachedInput_cache = synchronizedMRUCache(1000);

  static public List<String> parse3_cachedInput(String s) {
    List<String> tok = parse3_cachedInput_cache.get(s);
    if (tok == null)
      parse3_cachedInput_cache.put(s, tok = parse3(s));
    return tok;
  }

  static public Map<String, List<String>> parse3_cachedPattern_cache = synchronizedMRUCache(1000);

  static synchronized public List<String> parse3_cachedPattern(String s) {
    List<String> tok = parse3_cachedPattern_cache.get(s);
    if (tok == null)
      parse3_cachedPattern_cache.put(s, tok = parse3(s));
    return tok;
  }

  static public String[] match2(List<String> pat, List<String> tok) {
    int i = pat.indexOf("...");
    if (i < 0)
      return match2_match(pat, tok);
    pat = new ArrayList<String>(pat);
    pat.set(i, "*");
    while (pat.size() < tok.size()) {
      pat.add(i, "*");
      pat.add(i + 1, "");
    }
    return match2_match(pat, tok);
  }

  static public String[] match2_match(List<String> pat, List<String> tok) {
    List<String> result = new ArrayList<String>();
    if (pat.size() != tok.size()) {
      return null;
    }
    for (int i = 1; i < pat.size(); i += 2) {
      String p = pat.get(i), t = tok.get(i);
      if (eq(p, "*"))
        result.add(t);
      else if (!equalsIgnoreCase(unquote(p), unquote(t)))
        return null;
    }
    return result.toArray(new String[result.size()]);
  }

  static public List<String> codeTokensOnly(List<String> tok) {
    int n = l(tok);
    List<String> l = emptyList(n / 2);
    for (int i = 1; i < n; i += 2) l.add(tok.get(i));
    return l;
  }

  static public Class primitiveToBoxedTypeOpt(Class type) {
    return or(primitiveToBoxedType(type), type);
  }

  static public int lastIndexOf(String a, String b) {
    return a == null || b == null ? -1 : a.lastIndexOf(b);
  }

  static public int lastIndexOf(String a, char b) {
    return a == null ? -1 : a.lastIndexOf(b);
  }

  static public <A> int lastIndexOf(List<A> l, int i, A a) {
    if (l == null)
      return -1;
    for (i = min(l(l), i) - 1; i >= 0; i--) if (eq(l.get(i), a))
      return i;
    return -1;
  }

  static public <A> int lastIndexOf(List<A> l, A a) {
    if (l == null)
      return -1;
    for (int i = l(l) - 1; i >= 0; i--) if (eq(l.get(i), a))
      return i;
    return -1;
  }

  static public F0<AutoCloseable> dm_rEnter(final DynModule mod) {
    return mod == null ? null : new F0<AutoCloseable>() {

      public AutoCloseable get() {
        try {
          return mod.enter();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret mod.enter();";
      }
    };
  }

  static public <A extends AutoCloseable> A dm_ownResource(A resource) {
    dm_currentModuleMandatory().ownResource(resource);
    return resource;
  }

  static public String programID() {
    return getProgramID();
  }

  static public String programID(Object o) {
    return getProgramID(o);
  }

  static public TimerTask smartTimerTask(Object r, java.util.Timer timer, long delay) {
    return new SmartTimerTask(r, timer, delay, _threadInfo());
  }

  static public class SmartTimerTask extends TimerTask implements IFieldsToList {

    public Object r;

    public java.util.Timer timer;

    public long delay;

    public Object threadInfo;

    public SmartTimerTask() {
    }

    public SmartTimerTask(Object r, java.util.Timer timer, long delay, Object threadInfo) {
      this.threadInfo = threadInfo;
      this.delay = delay;
      this.timer = timer;
      this.r = r;
    }

    public String toString() {
      return shortClassName(this) + "(" + r + ", " + timer + ", " + delay + ", " + threadInfo + ")";
    }

    public Object[] _fieldsToList() {
      return new Object[] { r, timer, delay, threadInfo };
    }

    public long lastRun;

    public void run() {
      if (!licensed())
        timer.cancel();
      else {
        _threadInheritInfo(threadInfo);
        AutoCloseable __1 = tempActivity(r);
        try {
          lastRun = fixTimestamp(lastRun);
          long now = now();
          if (now >= lastRun + delay * 0.9) {
            lastRun = now;
            if (eq(false, pcallF(r)))
              timer.cancel();
          }
        } finally {
          _close(__1);
        }
      }
    }
  }

  static public <A> A vmBus_timerStarted(A timer) {
    vmBus_send("timerStarted", timer, costCenter());
    return timer;
  }

  static public <A extends Concept> ConceptFieldIndexCI<A> getConceptFieldCIIndex(Class<A> c, String field) {
    return getConceptFieldCIIndex(db_mainConcepts(), c, field);
  }

  static public <A extends Concept> ConceptFieldIndexCI<A> getConceptFieldCIIndex(Concepts concepts, Class<A> c, String field) {
    return (ConceptFieldIndexCI) concepts.getCIFieldIndex(c, field);
  }

  static public TreeSet<String> caseInsensitiveSet_treeSet() {
    return new TreeSet(caseInsensitiveComparator());
  }

  static public TreeSet<String> caseInsensitiveSet_treeSet(Collection<String> c) {
    return toCaseInsensitiveSet_treeSet(c);
  }

  static public boolean checkConceptFields(Concept x, Object... data) {
    for (int i = 0; i < l(data); i += 2) if (neq(cget(x, (String) data[i]), deref(data[i + 1])))
      return false;
    return true;
  }

  static public <A extends Concept> List<A> filterConcepts(List<A> list, Object... params) {
    if (empty(params))
      return list;
    List<A> l = new ArrayList();
    for (A x : list) if (checkConceptFields(x, params))
      l.add(x);
    return l;
  }

  static public String addSuffix(String s, String suffix) {
    return s == null || s.endsWith(suffix) ? s : s + suffix;
  }

  static public int randomID_defaultLength = 12;

  static public String randomID(int length) {
    return makeRandomID(length);
  }

  static public String randomID(Random r, int length) {
    return makeRandomID(r, length);
  }

  static public String randomID() {
    return randomID(randomID_defaultLength);
  }

  static public String randomID(Random r) {
    return randomID(r, randomID_defaultLength);
  }

  static public int globalIDLength() {
    return 16;
  }

  static public Map mapKeys(Object func, Map map) {
    Map m = similarEmptyMap(map);
    for (Object key : keys(map)) m.put(callF(func, key), map.get(key));
    return m;
  }

  static public Map mapKeys(Map map, Object func) {
    return mapKeys(func, map);
  }

  static public <A, B, C> Map<B, C> mapKeys(Map<A, C> map, IF1<A, B> func) {
    return mapKeys(map, (Object) func);
  }

  static public <A, B, C> Map<B, C> mapKeys(IF1<A, B> func, Map<A, C> map) {
    return mapKeys(map, func);
  }

  static public String dropDollarPrefix(String s) {
    return dropPrefix("$", s);
  }

  static public TreeMap litcimap(Object... x) {
    return litCIMap(x);
  }

  static public String replaceDollarVars_dyn(String s, IF1<String, String> f) {
    if (f == null)
      return s;
    return regexpReplaceIC(s, "\\$(\\w+)", matcher -> {
      String var = matcher.group(1);
      String val = f.get(var);
      return val == null ? matcher.group() : str(val);
    });
  }

  static public String charToString(char c) {
    return String.valueOf(c);
  }

  static public String charToString(int c) {
    return String.valueOf((char) c);
  }

  static public boolean checkFieldsIC(Object x, Object... data) {
    for (int i = 0; i < l(data); i += 2) if (!eqicOrEq(getOpt(x, (String) data[i]), data[i + 1]))
      return false;
    return true;
  }

  static public int strL(String s) {
    return s == null ? 0 : s.length();
  }

  static public int[] subIntArray(int[] b, int start) {
    return subIntArray(b, start, l(b));
  }

  static public int[] subIntArray(int[] b, int start, int end) {
    start = max(start, 0);
    end = min(end, l(b));
    if (start == 0 && end == l(b))
      return b;
    if (start >= end)
      return new int[0];
    int[] x = new int[end - start];
    System.arraycopy(b, start, x, 0, end - start);
    return x;
  }

  static public int[] subIntArray(int[] a, IntRange r) {
    return r == null ? null : subIntArray(a, r.start, r.end);
  }

  static public <A> List<A> reverseList(List<A> l) {
    Collections.reverse(l);
    return l;
  }

  static public <A> Comparator<A> fieldComparator(final String field) {
    return new Comparator<A>() {

      public int compare(A a, A b) {
        return cmp(getOpt(a, field), getOpt(b, field));
      }
    };
  }

  static public int cmp(Number a, Number b) {
    return a == null ? b == null ? 0 : -1 : cmp(a.doubleValue(), b.doubleValue());
  }

  static public int cmp(double a, double b) {
    return a < b ? -1 : a == b ? 0 : 1;
  }

  static public int cmp(int a, int b) {
    return a < b ? -1 : a == b ? 0 : 1;
  }

  static public int cmp(long a, long b) {
    return a < b ? -1 : a == b ? 0 : 1;
  }

  static public int cmp(Object a, Object b) {
    if (a == null)
      return b == null ? 0 : -1;
    if (b == null)
      return 1;
    return ((Comparable) a).compareTo(b);
  }

  static public double toSeconds(long ms) {
    return ms / 1000.0;
  }

  static public String toSeconds(long ms, int digits) {
    return formatDouble(toSeconds(ms), digits);
  }

  static public double toSeconds(double ms) {
    return ms / 1000.0;
  }

  static public String toSeconds(double ms, int digits) {
    return formatDouble(toSeconds(ms), digits);
  }

  static public byte[] toUtf8(String s) {
    try {
      return s.getBytes(utf8charset());
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> IterableIterator<A> iteratorFromFunction_f0(final F0<A> f) {
    class IFF2 extends IterableIterator<A> {

      public A a;

      public boolean done = false;

      public boolean hasNext() {
        getNext();
        return !done;
      }

      public A next() {
        getNext();
        if (done)
          throw fail();
        A _a = a;
        a = null;
        return _a;
      }

      public void getNext() {
        if (done || a != null)
          return;
        a = f.get();
        done = a == null;
      }
    }
    ;
    return new IFF2();
  }

  static public boolean nemptyString(String s) {
    return s != null && s.length() > 0;
  }

  static public int listL(Collection l) {
    return l == null ? 0 : l.size();
  }

  static public char lastChar(String s) {
    return empty(s) ? '\0' : s.charAt(l(s) - 1);
  }

  static public CloseableIterableIterator<String> linesFromFile(File f) {
    try {
      if (!f.exists())
        return emptyCloseableIterableIterator();
      if (ewic(f.getName(), ".gz"))
        return linesFromReader(utf8bufferedReader(newGZIPInputStream(f)));
      return linesFromReader(utf8bufferedReader(f));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public CloseableIterableIterator<String> linesFromFile(String path) {
    return linesFromFile(newFile(path));
  }

  static public boolean containsIgnoreCase(Collection<String> l, String s) {
    if (l != null)
      for (String x : l) if (eqic(x, s))
        return true;
    return false;
  }

  static public boolean containsIgnoreCase(String[] l, String s) {
    if (l != null)
      for (String x : l) if (eqic(x, s))
        return true;
    return false;
  }

  static public boolean containsIgnoreCase(String s, char c) {
    return indexOfIgnoreCase(s, String.valueOf(c)) >= 0;
  }

  static public boolean containsIgnoreCase(String a, String b) {
    return indexOfIgnoreCase(a, b) >= 0;
  }

  static public boolean ewic(String a, String b) {
    return endsWithIgnoreCase(a, b);
  }

  static public boolean ewic(String a, String b, Matches m) {
    return endsWithIgnoreCase(a, b, m);
  }

  static public String dropSuffixIgnoreCase(String suffix, String s) {
    return ewic(s, suffix) ? s.substring(0, l(s) - l(suffix)) : s;
  }

  static public boolean ewicOneOf(String s, String... l) {
    if (s != null)
      for (String x : l) if (ewic(s, x))
        return true;
    return false;
  }

  static public String formatWithThousandsSeparator(long l) {
    return NumberFormat.getInstance(new Locale("en_US")).format(l);
  }

  static public String unparseCSSParameter(Map<String, String> map) {
    return joinWithSemicolon(map(map, new F2<String, String, String>() {

      public String get(String key, String value) {
        try {
          return key + ": " + value;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "key + \": \" + value";
      }
    }));
  }

  static public <A, B> Map<A, B> mapPlus_noOverwrite(Map<A, B> m, Object... data) {
    m = cloneMap(m);
    litmap_impl_noOverwrite(m, data);
    return m;
  }

  static public Map<String, String> parseCSSParameter(String s) {
    Map<String, String> map = new LinkedHashMap();
    for (String x : trimAll(splitAt(s, ";"))) {
      List<String> y = trimAll(splitAtColon(x));
      if (l(y) == 2)
        map.put(first(y), second(y));
    }
    return map;
  }

  static public String himg(String src, Object... params) {
    return tag("img", "", arrayPlus(params, "src", isSnippetID(src) ? snippetImageLink(src) : src));
  }

  static public String snippetImageLink(String snippetID) {
    return snippetImageURL(snippetID);
  }

  static public int iround(double d) {
    return (int) Math.round(d);
  }

  static public int iround(Number n) {
    return iround(toDouble(n));
  }

  static public double doubleRatio(double x, double y) {
    return y == 0 ? 0 : x / y;
  }

  static public TimeZone localTimeZone() {
    return getTimeZone(standardTimeZone());
  }

  static public boolean regionMatchesIC(String a, int offsetA, String b, int offsetB, int len) {
    return a != null && a.regionMatches(true, offsetA, b, offsetB, len);
  }

  static public List<String> javaTok_noMLS(String s) {
    ArrayList<String> tok = new ArrayList();
    int l = s == null ? 0 : s.length();
    int i = 0, n = 0;
    while (i < l) {
      int j = i;
      char c, d;
      while (j < l) {
        c = s.charAt(j);
        d = j + 1 >= l ? '\0' : s.charAt(j + 1);
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (c == '/' && d == '*') {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (c == '/' && d == '/') {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      tok.add(javaTok_substringN(s, i, j));
      ++n;
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      d = i + 1 >= l ? '\0' : s.charAt(i + 1);
      if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          int c2 = s.charAt(j);
          if (c2 == opener || c2 == '\n' && opener == '\'') {
            ++j;
            break;
          } else if (c2 == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ++j; while (j < l && Character.isJavaIdentifierPart(s.charAt(j)));
      else if (Character.isDigit(c)) {
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
        if (j < l && s.charAt(j) == 'L')
          ++j;
      } else
        ++j;
      tok.add(javaTok_substringC(s, i, j));
      ++n;
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    return tok;
  }

  static public String rep(int n, char c) {
    return repeat(c, n);
  }

  static public String rep(char c, int n) {
    return repeat(c, n);
  }

  static public <A> List<A> rep(A a, int n) {
    return repeat(a, n);
  }

  static public <A> List<A> rep(int n, A a) {
    return repeat(n, a);
  }

  static public Throwable unwrapTrivialExceptionWraps(Throwable e) {
    if (e == null)
      return e;
    while (e.getClass() == RuntimeException.class && e.getCause() != null && eq(e.getMessage(), str(e.getCause()))) e = e.getCause();
    return e;
  }

  static public String replacePrefix(String prefix, String replacement, String s) {
    if (!startsWith(s, prefix))
      return s;
    return replacement + substring(s, l(prefix));
  }

  static public Throwable innerException2(Throwable e) {
    if (e == null)
      return null;
    while (empty(e.getMessage()) && e.getCause() != null) e = e.getCause();
    return e;
  }

  static volatile public String caseID_caseID;

  static public String caseID() {
    return caseID_caseID;
  }

  static public void caseID(String id) {
    caseID_caseID = id;
  }

  static public String quoteUnlessIdentifierOrInteger(String s) {
    return quoteIfNotIdentifierOrInteger(s);
  }

  static volatile public boolean licensed_yes = true;

  static public boolean licensed() {
    if (!licensed_yes)
      return false;
    ping_okInCleanUp();
    return true;
  }

  static public void licensed_off() {
    licensed_yes = false;
  }

  static public <A> List<A> sortByCalculatedField(Iterable<A> c, final Object f) {
    List<A> l = cloneList(c);
    sort(l, new Comparator<A>() {

      public int compare(A a, A b) {
        return stdcompare(callF(f, a), callF(f, b));
      }
    });
    return l;
  }

  static public Set<String> listFields(Object c) {
    TreeSet<String> fields = new TreeSet();
    for (Field f : _getClass(c).getDeclaredFields()) fields.add(f.getName());
    return fields;
  }

  static public String n(long l, String name) {
    return l + " " + trim(l == 1 ? singular(name) : getPlural(name));
  }

  static public String n(Collection l, String name) {
    return n(l(l), name);
  }

  static public String n(Map m, String name) {
    return n(l(m), name);
  }

  static public String n(Object[] a, String name) {
    return n(l(a), name);
  }

  static public String n(MultiSet ms, String name) {
    return n(l(ms), name);
  }

  static public boolean eqicOrEq(Object a, Object b) {
    return a instanceof String && b instanceof String ? eqic((String) a, (String) b) : eq(a, b);
  }

  static public boolean containsRegexpIC(String s, String pat) {
    return compileRegexpIC(pat).matcher(s).find();
  }

  static public String phraseToRegExp(String b) {
    return (startsWithLetterOrDigit(b) ? "\\b" : "") + regexpQuote(b) + (endsWithLetterOrDigit(b) ? "\\b" : "");
  }

  static public boolean matchStart(String pat, String s) {
    return matchStart(pat, s, null);
  }

  static public boolean matchStart(String pat, String s, Matches matches) {
    if (s == null)
      return false;
    return matchStart(pat, parse3_cachedInput(s), matches);
  }

  static public boolean matchStart(String pat, List<String> toks, Matches matches) {
    if (toks == null)
      return false;
    List<String> tokpat = parse3_cachedPattern(pat);
    if (toks.size() < tokpat.size())
      return false;
    String[] m = match2(tokpat, toks.subList(0, tokpat.size()));
    if (m == null)
      return false;
    if (matches != null) {
      matches.m = new String[m.length + 1];
      arraycopy(m, matches.m);
      matches.m[m.length] = joinSubList(toks, tokpat.size(), toks.size());
    }
    return true;
  }

  static public boolean matchEnd(String pat, String s) {
    return matchEnd(pat, s, null);
  }

  static public boolean matchEnd(String pat, String s, Matches matches) {
    if (s == null)
      return false;
    List<String> tokpat = parse3(pat), toks = parse3(s);
    if (toks.size() < tokpat.size())
      return false;
    String[] m = match2(tokpat, takeLast(l(tokpat), toks));
    if (m == null)
      return false;
    if (matches != null) {
      matches.m = new String[m.length + 1];
      arraycopy(m, matches.m);
      matches.m[m.length] = join(dropLast(l(tokpat), toks));
    }
    return true;
  }

  static public boolean find3(String pat, String s) {
    return find3(pat, s, null);
  }

  static public boolean find3(String pat, String s, Matches matches) {
    return find3(pat, parse3_cachedInput(s), matches);
  }

  static public boolean find3(String pat, List<String> toks, Matches matches) {
    List<String> tokpat = parse3_cachedPattern(pat);
    String[] m = find2(tokpat, toks);
    if (m == null)
      return false;
    if (matches != null)
      matches.m = m;
    return true;
  }

  static public boolean tok_isRoundBracketed(String s) {
    List<String> tok = tok_combineRoundBrackets_keep(javaTok(s));
    return l(tok) == 3 && startsWithAndEndsWith(tok.get(1), "(", ")");
  }

  static public List<String> javaTokPlusBrackets(String s) {
    return tok_combineRoundOrCurlyBrackets_keep(javaTok(s));
  }

  static public Map<String, List<String>> javaTokWithAllBrackets_cached_cache = synchronizedMRUCache(defaultTokenizerCacheSize());

  static public List<String> javaTokWithAllBrackets_cached(String s) {
    List<String> tok = javaTokWithAllBrackets_cached_cache.get(s);
    if (tok == null)
      javaTokWithAllBrackets_cached_cache.put(s, tok = javaTokWithAllBrackets(s));
    return tok;
  }

  static public List<String> splitAtTokens(String s, List<String> tokens) {
    return splitAtTokens(javaTok(s), tokens);
  }

  static public List<String> splitAtTokens(List<String> tok, List<String> tokens) {
    List<String> l = new ArrayList();
    int i = 0;
    while (i < l(tok)) {
      int j = indexOfSubList(tok, tokens, i);
      if (i >= l(tok))
        break;
      if (j < 0)
        j = l(tok);
      l.add(trimJoin(tok.subList(i, j)));
      i = j + l(tokens);
    }
    return l;
  }

  static public List<String> splitAtTokens(List<String> tok, String... tokens) {
    List<String> l = new ArrayList();
    int i = 0;
    while (i < l(tok)) {
      int j = indexOfSubList(tok, tokens, i);
      if (i >= l(tok))
        break;
      if (j < 0)
        j = l(tok);
      l.add(trimJoin(tok.subList(i, j)));
      i = j + l(tokens);
    }
    return l;
  }

  static public <A> A[] arrayOfSameType(A[] a, int n) {
    return newObjectArrayOfSameType(a, n);
  }

  static public boolean isNormalQuoted(String s) {
    int l = l(s);
    if (!(l >= 2 && s.charAt(0) == '"' && lastChar(s) == '"'))
      return false;
    int j = 1;
    while (j < l) if (s.charAt(j) == '"')
      return j == l - 1;
    else if (s.charAt(j) == '\\' && j + 1 < l)
      j += 2;
    else
      ++j;
    return false;
  }

  static public boolean isMultilineQuoted(String s) {
    if (!startsWith(s, "["))
      return false;
    int i = 1;
    while (i < s.length() && s.charAt(i) == '=') ++i;
    return i < s.length() && s.charAt(i) == '[';
  }

  static public int findEndOfAngleBracketPart(List<String> cnc, int i) {
    int j = i + 2, level = 1;
    while (j < cnc.size()) {
      if (eq(cnc.get(j), "<"))
        ++level;
      else if (eq(cnc.get(j), ">"))
        --level;
      if (level == 0)
        return j + 1;
      ++j;
    }
    return cnc.size();
  }

  static public CancelPoint newCancelPoint() {
    return new CancelPoint();
  }

  static public List<String> javaTokNPunctuation_plusAsterisk(String s) {
    List<String> tok = javaTok(s);
    for (int i = 1; i < l(tok); i += 2) {
      int j = i;
      String t;
      while (j < l(tok) && l(t = tok.get(j)) == 1 && !Character.isLetterOrDigit(t.charAt(0)) && t.charAt(0) != '*') j += 2;
      if (j > i)
        replaceSubList(tok, i - 1, j, ll(joinSubList(tok, i - 1, j)));
    }
    return tok;
  }

  static public List<String> callTokenizer(Object tokenizer, String s) {
    return (List<String>) callF(tokenizer, s);
  }

  static public List<Integer> flexMatchIC_getVarIndices(List<String> tokPat, List<String> tokInput) {
    List<Integer> varIndices = new ArrayList();
    for (int i = 1; i < l(tokPat); i += 2) {
      String t = tokPat.get(i);
      if (eq(t, "*"))
        varIndices.add(i);
      else if (isIdentifier(t) && !cicAtOddPosition(tokInput, t)) {
        return null;
      }
    }
    return varIndices;
  }

  static public void printStructs(Object... params) {
    print(renderStructs(params));
  }

  static public List<List<String>> ai_spreadCertainIndices_2(List<String> tokPat, List<String> tokS, List<Integer> indices) {
    int extra = (l(tokS) - l(tokPat)) / 2;
    if (extra < 0 || empty(indices))
      return emptyList();
    List<List<String>> results = new ArrayList();
    for (List<Integer> spread : allSpreads(extra, l(indices))) {
      List<String> tok = new ArrayList();
      int pos = 0, iSpread = 0, iIndices = 0;
      for (int i = 0; i < l(tokPat); i++) if (!eq(get(indices, iIndices), i))
        tok.add(tokS.get(pos++));
      else {
        ++iIndices;
        int take = spread.get(iSpread++) * 2;
        tok.add(joinSubList(tokS, pos, pos + take + 1));
        pos += take + 1;
      }
      results.add(tok);
    }
    return results;
  }

  static public String sfu(Object o) {
    return structureForUser(o);
  }

  static public <A> boolean strictPutIC(Map<A, String> map, A key, String value) {
    if (!(map != null && key != null && value != null))
      return true;
    String old = map.get(key);
    if (old == null) {
      map.put(key, value);
      return true;
    }
    return eqic(old, value);
  }

  static public Map synchroHashMap() {
    return Collections.synchronizedMap(new HashMap());
  }

  static public Class<?> _getClass(String name) {
    try {
      return Class.forName(name);
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static public Class _getClass(Object o) {
    return o == null ? null : o instanceof Class ? (Class) o : o.getClass();
  }

  static public Class _getClass(Object realm, String name) {
    try {
      return getClass(realm).getClassLoader().loadClass(classNameToVM(name));
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static public <A, B> Map<A, B> synchronizedMRUCache(int maxSize) {
    return synchroMap(new MRUCache(maxSize));
  }

  static public String[] codeTokensAsStringArray(List<String> tok) {
    int n = max(0, (l(tok) - 1) / 2);
    String[] out = new String[n];
    for (int i = 0; i < n; i++) out[i] = tok.get(i * 2 + 1);
    return out;
  }

  static public boolean checkTokCondition(Object condition, List<String> tok, int i) {
    if (condition instanceof TokCondition)
      return ((TokCondition) condition).get(tok, i);
    return checkCondition(condition, tok, i);
  }

  static public int parseInt(String s) {
    return emptyString(s) ? 0 : Integer.parseInt(s);
  }

  static public int parseInt(char c) {
    return Integer.parseInt(str(c));
  }

  static public <A> void replaceCollection(Collection<A> dest, Collection<A> src) {
    if (dest == src)
      return;
    dest.clear();
    if (src != null)
      dest.addAll(src);
  }

  static public void replaceListPart(List l, int i, int j, List l2) {
    replaceSublist(l, i, j, l2);
  }

  static public <A> A optParam(ThreadLocal<A> tl, A defaultValue) {
    return optPar(tl, defaultValue);
  }

  static public <A> A optParam(ThreadLocal<A> tl) {
    return optPar(tl);
  }

  static public Object optParam(String name, Map params) {
    return mapGet(params, name);
  }

  static public <A> A optParam(Object[] opt, String name, A defaultValue) {
    int n = l(opt);
    if (n == 1 && opt[0] instanceof Map) {
      Map map = (Map) (opt[0]);
      return map.containsKey(name) ? (A) map.get(name) : defaultValue;
    }
    if (!even(l(opt)))
      throw fail("Odd parameter length");
    for (int i = 0; i < l(opt); i += 2) if (eq(opt[i], name))
      return (A) opt[i + 1];
    return defaultValue;
  }

  static public Object optParam(Object[] opt, String name) {
    return optParam(opt, name, null);
  }

  static public Object optParam(String name, Object[] params) {
    return optParam(params, name);
  }

  static public Object[] mapToObjectArray(Map map) {
    List l = new ArrayList();
    for (Object o : keys(map)) {
      l.add(o);
      l.add(map.get(o));
    }
    return toObjectArray(l);
  }

  static public Object[] mapToObjectArray(Object f, Collection l) {
    int n = l(l);
    Object[] array = new Object[n];
    if (n != 0) {
      Iterator it = iterator(l);
      for (int i = 0; i < n; i++) array[i] = callF(f, it.next());
    }
    return array;
  }

  static public Object[] mapToObjectArray(Object f, Object[] l) {
    int n = l(l);
    Object[] array = new Object[n];
    for (int i = 0; i < n; i++) array[i] = callF(f, l[i]);
    return array;
  }

  static public <A> Object[] mapToObjectArray(Collection<A> l, IF1<A, Object> f) {
    return mapToObjectArray(f, l);
  }

  static public <A> Object[] mapToObjectArray(A[] l, IF1<A, Object> f) {
    return mapToObjectArray(f, l);
  }

  static public ThreadLocal<Boolean> htmlencode_forParams_useV2 = new ThreadLocal();

  static public String htmlencode_forParams(String s) {
    if (s == null)
      return "";
    if (isTrue(htmlencode_forParams_useV2.get()))
      return htmlencode_forParams_v2(s);
    StringBuilder out = new StringBuilder(Math.max(16, s.length()));
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c > 127 || c == '"' || c == '<' || c == '>') {
        out.append("&#");
        out.append((int) c);
        out.append(';');
      } else
        out.append(c);
    }
    return out.toString();
  }

  static public int boolToInt(boolean b) {
    return b ? 1 : 0;
  }

  static public boolean isOpeningTag(String token, String tag) {
    return isTag(token, tag) && !token.endsWith("/>");
  }

  static public boolean isOpeningTag(String token) {
    return token.startsWith("<") && token.endsWith(">") && !token.endsWith("/>") && isLetter(token.charAt(1));
  }

  static public boolean isTag(String token, String tag) {
    return token.regionMatches(true, 0, "<" + tag + " ", 0, tag.length() + 2) || token.regionMatches(true, 0, "<" + tag + ">", 0, tag.length() + 2);
  }

  static public long psI(String snippetID) {
    return parseSnippetID(snippetID);
  }

  static public String htmlQuery(Map params) {
    return empty(params) ? "" : "?" + makePostData(params);
  }

  static public String htmlQuery(Object... data) {
    return empty(data) ? "" : "?" + makePostData(data);
  }

  static public <A, B> Map<A, B> mapMinus(Map<A, B> map, Object... keys) {
    if (empty(keys))
      return map;
    Map<A, B> m2 = cloneMap(map);
    for (Object key : keys) m2.remove(key);
    return m2;
  }

  static public Object[] toObjectArray(Collection c) {
    List l = asList(c);
    return l.toArray(new Object[l.size()]);
  }

  static public Object pcallFunction(Object f, Object... args) {
    try {
      return callFunction(f, args);
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return null;
  }

  static public <A> WeakReference<A> weakRef(A a) {
    return newWeakReference(a);
  }

  static public String quickSubstring(String s, int i, int j) {
    if (i == j)
      return "";
    return s.substring(i, j);
  }

  static public boolean isLetter(char c) {
    return Character.isLetter(c);
  }

  static public void setOptIfNotNull(Object o, String field, Object value) {
    if (value != null)
      setOpt(o, field, value);
  }

  static public TokCondition toTokCondition(ITokCondition condition) {
    return condition == null ? null : new TokCondition() {

      public boolean get(List<String> tok, int i) {
        return condition.get(tok, i);
      }
    };
  }

  static public <A> List<A> replaceSublist(List<A> l, List<A> x, List<A> y) {
    if (x == null)
      return l;
    int i = 0;
    while (true) {
      i = indexOfSubList(l, x, i);
      if (i < 0)
        break;
      replaceSublist(l, i, i + l(x), y);
      i += l(y);
    }
    return l;
  }

  static public <A> List<A> replaceSublist(List<A> l, int fromIndex, int toIndex, List<A> y) {
    int n = y.size(), toIndex_new = fromIndex + n;
    if (toIndex_new < toIndex) {
      removeSubList(l, toIndex_new, toIndex);
      copyListPart(y, 0, l, fromIndex, n);
    } else {
      copyListPart(y, 0, l, fromIndex, toIndex - fromIndex);
      if (toIndex_new > toIndex)
        l.addAll(toIndex, subList(y, toIndex - fromIndex));
    }
    return l;
  }

  static public <A> List<A> replaceSublist(List<A> l, IntRange r, List<A> y) {
    return replaceSublist(l, r.start, r.end, y);
  }

  static public String asciiSideBySide(List<String> texts) {
    if (l(texts) < 2)
      return unnull(first(texts));
    if (l(texts) > 2)
      return asciiSideBySide(ll(asciiSideBySide(dropLast(texts)), last(texts)));
    List<String> l1 = lines(first(texts)), l2 = lines(second(texts));
    int col1 = maxStringLength(l1), n = max(l(l1), l(l2));
    StringBuilder buf = new StringBuilder();
    for (int i = 0; i < n; i++) buf.append(rpad(unnull(get(l1, i)), col1)).append(unnull(get(l2, i))).append("\n");
    return str(buf);
  }

  static public int maxLineCount(Collection<String> l) {
    int n = 0;
    if (l != null)
      for (String s : l) n = max(n, countLines(s));
    return n;
  }

  static public String repLine(int n, String s) {
    return lines(rep(n, s));
  }

  static public <A, B> List<A> firstOfPairs(Collection<Pair<A, B>> l) {
    List<A> out = new ArrayList();
    for (Pair<A, B> p : unnull(l)) out.add(firstOfPair(p));
    return out;
  }

  static public <A, B> List<B> secondOfPairs(Collection<Pair<A, B>> l) {
    return lambdaMap(__55 -> secondOfPair(__55), l);
  }

  static public String curlyBrace(String s) {
    return "{" + s + "}";
  }

  static public List<String> tok_combineCurlyBrackets_keep(List<String> tok) {
    List<String> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && eq(t, "{")) {
        int j = findEndOfCurlyBracketPart(tok, i);
        l.add(joinSubList(tok, i, j));
        i = j - 1;
      } else
        l.add(t);
    }
    return l;
  }

  static public boolean startsWithAndEndsWith(String s, String prefix, String suffix) {
    return startsWith(s, prefix) && endsWith(s, suffix);
  }

  static public <A> List<A> cloneSubList(List<A> l, int startIndex, int endIndex) {
    return newSubList(l, startIndex, endIndex);
  }

  static public <A> List<A> cloneSubList(List<A> l, int startIndex) {
    return newSubList(l, startIndex);
  }

  static public float getSwingFontScale() {
    return or((Float) vm_generalMap_get("swingFontScale_value"), 1f);
  }

  static public Object getConsoleTextArea_gen() {
    return getOpt(get(getJavaX(), "console"), "textArea");
  }

  static public Object swing(Object f) {
    return swingAndWait(f);
  }

  static public <A> A swing(F0<A> f) {
    return (A) swingAndWait(f);
  }

  static public <A> A swing(IF0<A> f) {
    return (A) swingAndWait(f);
  }

  static public JTextField consoleInputField() {
    Object console = get(getJavaX(), "console");
    return (JTextField) getOpt(console, "tfInput");
  }

  static public void revalidateFrame(Component c) {
    revalidate(getFrame(c));
  }

  static public betterCIComparator_C betterCIComparator_instance;

  static public betterCIComparator_C betterCIComparator() {
    if (betterCIComparator_instance == null)
      betterCIComparator_instance = new betterCIComparator_C();
    return betterCIComparator_instance;
  }

  final static public class betterCIComparator_C implements Comparator<String> {

    public int compare(String s1, String s2) {
      if (s1 == null)
        return s2 == null ? 0 : -1;
      if (s2 == null)
        return 1;
      int n1 = s1.length();
      int n2 = s2.length();
      int min = Math.min(n1, n2);
      for (int i = 0; i < min; i++) {
        char c1 = s1.charAt(i);
        char c2 = s2.charAt(i);
        if (c1 != c2) {
          c1 = Character.toUpperCase(c1);
          c2 = Character.toUpperCase(c2);
          if (c1 != c2) {
            c1 = Character.toLowerCase(c1);
            c2 = Character.toLowerCase(c2);
            if (c1 != c2) {
              return c1 - c2;
            }
          }
        }
      }
      return n1 - n2;
    }
  }

  static public boolean boolOptParam(ThreadLocal<Boolean> tl) {
    return isTrue(optPar(tl));
  }

  static public boolean boolOptParam(Object[] __, String name) {
    return isTrue(optParam(__, name));
  }

  static public boolean boolOptParam(String name, Object[] __) {
    return boolOptParam(__, name);
  }

  static public boolean boolOptParam(String name, Map __) {
    return isTrue(optPar(name, __));
  }

  static public <A, B> List<A> keysWithoutHidden(Map<A, B> map) {
    return filter(keys(map), new F1<Object, Boolean>() {

      public Boolean get(Object o) {
        try {
          return !eq(o, "[hidden]") && !isStringStartingWith(o, "[hidden] ");
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "!eq(o, \"[hidden]\") && !isStringStartingWith(o, \"[hidden] \")";
      }
    });
  }

  static public String structureOrTextForUser(Object o) {
    return o == null ? "" : o instanceof String ? (String) o : structureForUser(o);
  }

  static public <A, B> LinkedHashMap<A, B> asLinkedHashMap(Map<A, B> map) {
    if (map instanceof LinkedHashMap)
      return (LinkedHashMap) map;
    LinkedHashMap<A, B> m = new LinkedHashMap();
    if (map != null)
      synchronized (collectionMutex(map)) {
        m.putAll(map);
      }
    return m;
  }

  static public Collection<String> getCodeFragmentSafety(String code) {
    Map<String, String> map = codeAnalysis_identifierSafetyMap();
    Set<String> identifiers = tok_allIdentifiers(code);
    Collection<String> tags = treeSet();
    for (String id : identifiers) {
      String tag;
      if (codeAnalysis_isSafeIdentifier(id))
        tag = "safe";
      else
        tag = or2(map.get(id), "?");
      tags.addAll(tokSplitAtComma(tag));
    }
    tags = simplifySafetyTags(tags);
    if (empty(tags))
      tags.add("safe");
    return tags;
  }

  static public Map<Thread, Object> vm_threadInterruptionReasonsMap() {
    return vm_generalWeakSubMap("Thread interruption reasons");
  }

  static public String strOr(Object o, String ifNull) {
    return o == null ? ifNull : str(o);
  }

  static public void lockOrFail(Lock lock, long timeout) {
    try {
      ping();
      if (!lock.tryLock(timeout, TimeUnit.MILLISECONDS)) {
        String s = "Couldn't acquire lock after " + timeout + " ms.";
        if (lock instanceof ReentrantLock) {
          ReentrantLock l = (ReentrantLock) lock;
          s += " Hold count: " + l.getHoldCount() + ", owner: " + call(l, "getOwner");
        }
        throw fail(s);
      }
      ping();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public ReentrantLock fairLock() {
    return new ReentrantLock(true);
  }

  static public String trimLoadTextFile(String fileName) {
    return loadTextFile_trim(fileName);
  }

  static public String trimLoadTextFile(File f, String defaultContents) {
    return loadTextFile_trim(f, defaultContents);
  }

  static public String trimLoadTextFile(File fileName) {
    return loadTextFile_trim(fileName);
  }

  static public String trimLoadTextFile(String fileName, String defaultContents) {
    return loadTextFile_trim(fileName, defaultContents);
  }

  static public File javaxDataDir_dir;

  static public File javaxDataDir() {
    return javaxDataDir_dir != null ? javaxDataDir_dir : new File(userHome(), "JavaX-Data");
  }

  static public File javaxDataDir(String... subs) {
    return newFile(javaxDataDir(), subs);
  }

  static public Map<String, String> stdFunctions_uncached() {
    return stdFunctions_uncached(new HashMap());
  }

  static public Map<String, String> stdFunctions_uncached(Map<String, String> map) {
    parseStdFunctionsList(loadSnippetSilently("#1006654"), map);
    parseStdFunctionsList(loadSnippetSilently("#761"), map);
    return map;
  }

  static public boolean isLowerHexString(String s) {
    for (int i = 0; i < l(s); i++) {
      char c = s.charAt(i);
      if (c >= '0' && c <= '9' || c >= 'a' && c <= 'f') {
      } else
        return false;
    }
    return true;
  }

  static public String tb_mainServer_default = "http://code.botcompany.de:8081";

  static public Object tb_mainServer_override;

  static public String tb_mainServer() {
    if (tb_mainServer_override != null)
      return (String) callF(tb_mainServer_override);
    return trim(loadTextFile(tb_mainServer_file(), tb_mainServer_default));
  }

  static public File tb_mainServer_file() {
    return getProgramFile("#1001638", "mainserver.txt");
  }

  static public boolean tb_mainServer_isDefault() {
    return eq(tb_mainServer(), tb_mainServer_default);
  }

  static public String standardCredentials_noCookies() {
    return standardCredentials() + "&noCookies=1";
  }

  static public String dropFirstLine(String text) {
    if (text == null)
      return null;
    int i = text.indexOf('\n');
    return i >= 0 ? text.substring(i + 1) : "";
  }

  static public boolean getServerTranspiled2_allowLocalFallback = true, getServerTranspiled2_localFallbackVerbose = true;

  static public Map<String, String> getServerTranspiled2_tempCache;

  static public String getServerTranspiled2(String id) {
    IResourceLoader rl = vm_getResourceLoader();
    if (rl != null)
      return rl.getTranspiled(id);
    return getServerTranspiled2_noResourceLoader(id);
  }

  static public String getServerTranspiled2_noResourceLoader(String id) {
    id = fsIOpt(id);
    String transpiled = mapGet(getServerTranspiled2_tempCache, id);
    if (transpiled != null)
      return transpiled;
    transpiled = loadCachedTranspilation(id);
    String md5 = null;
    if (machineIsOffline() || isOfflineMode() || isLocalSnippet(id))
      return transpiled;
    if (transpiled != null)
      md5 = md5(transpiled);
    String transpiledSrc;
    try {
      transpiledSrc = getServerTranspiled(formatSnippetID(id), md5);
    } catch (Throwable e) {
      if (!getServerTranspiled2_allowLocalFallback)
        rethrow(e);
      printExceptionShort(e);
      if (getServerTranspiled2_localFallbackVerbose)
        print("Fallback to local code");
      return transpiled;
    }
    if (eq(transpiledSrc, "SAME")) {
      if (!isTrue(loadPage_silent.get()))
        print("SAME");
      return mapPut_returnValue(getServerTranspiled2_tempCache, id, transpiled);
    }
    return mapPut_returnValue(getServerTranspiled2_tempCache, id, transpiledSrc);
  }

  static public File transpiledStandardFunctions_file(TreeSet<String> functionSet) {
    String name = uniqueFileNameUsingMD5_80_v2(join("+", functionSet));
    File dir = javaxCachesDir("Transpiled Standard Functions");
    saveTextFileUnlessExists(newFile(dir, name + ".functions"), lines(functionSet));
    return newFile(dir, name + ".java");
  }

  static public String loadTextFile(String fileName) {
    return loadTextFile(fileName, null);
  }

  static public String loadTextFile(File f, String defaultContents) {
    return loadTextFile(f, defaultContents, "UTF-8");
  }

  static public String loadTextFile(File f, String defaultContents, String encoding) {
    try {
      checkFileNotTooBigToRead(f);
      if (f == null || !f.exists())
        return defaultContents;
      FileInputStream fileInputStream = new FileInputStream(f);
      InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, encoding);
      return loadTextFile(inputStreamReader);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  public static String loadTextFile(File fileName) {
    return loadTextFile(fileName, null);
  }

  static public String loadTextFile(String fileName, String defaultContents) {
    return fileName == null ? defaultContents : loadTextFile(newFile(fileName), defaultContents);
  }

  static public String loadTextFile(Reader reader) throws IOException {
    StringBuilder builder = new StringBuilder();
    try {
      char[] buffer = new char[1024];
      int n;
      while (-1 != (n = reader.read(buffer))) builder.append(buffer, 0, n);
    } finally {
      reader.close();
    }
    return str(builder);
  }

  static public long recommendedTranspilationDateForStandardFunctions(Collection<String> sfNames) {
    long date = 0;
    for (String name : sfNames) {
      long d = recommendedTranspilationDateForStandardFunction(name);
      if (d == 0)
        return 0;
      date = max(date, d);
    }
    return date;
  }

  static public String findTranslators2(String src, List<String> libsOut) {
    return join(findTranslators2(javaTok(src), libsOut));
  }

  static public List<String> findTranslators2(List<String> tok, List<String> libsOut) {
    int i;
    while ((i = jfind(tok, "!<int>")) >= 0) {
      setAdd(libsOut, tok.get(i + 2));
      clearTokens(tok, i, i + 3);
    }
    return tok;
  }

  static public File javaCompile_overInternalBot(String src) {
    return javaCompile_overInternalBot(src, "");
  }

  static synchronized public File javaCompile_overInternalBot(String src, String dehlibs) {
    return CompilerBot.compile(src, dehlibs);
  }

  static public Class hotwireCore(List<File> files) {
    try {
      JavaXClassLoader classLoader = hotwire_makeClassLoader(files);
      Class<?> theClass = classLoader.loadClass("main");
      setOpt(theClass, "__javax", getJavaX());
      if (getOpt(theClass, "programID") == null)
        setOpt(theClass, "programID", "#3999999");
      if (!_inCore())
        hotwire_copyOver(theClass);
      return theClass;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public List<File> loadLibraries(List<String> snippetIDs) {
    return map("loadLibrary", snippetIDs);
  }

  static public StringBuilder stringBuilder(String s) {
    return new StringBuilder(unnull(s));
  }

  static public String appendNewLineIfNempty(String s) {
    return empty(s) ? "" : s + "\n";
  }

  static public String assertIdentifier(String s) {
    return assertIsIdentifier(s);
  }

  static public String assertIdentifier(String msg, String s) {
    return assertIsIdentifier(msg, s);
  }

  static public Class veryQuickJava(CharSequence mainJava) {
    return veryQuickJava3(str(mainJava));
  }

  static public void saveTranspiledStandardFunctions(TreeSet<String> functionSet, String transpiledSrc) {
    try {
      saveTextFile(transpiledStandardFunctions_file(functionSet), transpiledSrc);
    } catch (Throwable __e) {
      _handleException(__e);
    }
  }

  static public long done2_always(long startTime, String desc) {
    long time = sysNow() - startTime;
    saveTiming_noPrint(time);
    print(desc + " [" + time + " ms]");
    return time;
  }

  static public long done2_always(String desc, long startTime) {
    return done2_always(startTime, desc);
  }

  static public long done2_always(long startTime) {
    return done2_always(startTime, "");
  }

  static public Set<AutoCloseable> _registerAutoCloseable_set = synchroHashSet();

  static public void _registerAutoCloseable(AutoCloseable c) {
    addIfNotNull(_registerAutoCloseable_set, c);
  }

  static public void cleanMeUp__registerAutoCloseable() {
    closeAutoCloseables(getAndClearList(_registerAutoCloseable_set));
  }

  static public <A> Set<A> syncIdentityHashSet() {
    return (Set) synchronizedSet(identityHashSet());
  }

  static public <A> AutoCloseable tempAdd(final Collection<A> l, final A a) {
    if (l == null || l.contains(a))
      return null;
    l.add(a);
    return new AutoCloseable() {

      public String toString() {
        return "l.remove(a);";
      }

      public void close() throws Exception {
        l.remove(a);
      }
    };
  }

  static public <A> A third(List<A> l) {
    return _get(l, 2);
  }

  static public <A> A third(Iterable<A> l) {
    if (l == null)
      return null;
    Iterator<A> it = iterator(l);
    for (int _repeat_0 = 0; _repeat_0 < 2; _repeat_0++) {
      if (!it.hasNext())
        return null;
      it.next();
    }
    return it.hasNext() ? it.next() : null;
  }

  static public <A> A third(Producer<A> p) {
    if (p == null)
      return null;
    for (int _repeat_1 = 0; _repeat_1 < 2; _repeat_1++) {
      if (p.next() == null)
        return null;
    }
    return p.next();
  }

  static public <A> A third(A[] bla) {
    return bla == null || bla.length <= 2 ? null : bla[2];
  }

  static public <A> VF1<A> runnableToVF1(final Runnable r) {
    return r == null ? null : new VF1<A>() {

      public void get(A a) {
        try {
          r.run();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "r.run()";
      }
    };
  }

  static public Object callOptMC(String method, Object... args) {
    return callOpt(mc(), method, args);
  }

  static public Throwable getExceptionCause(Throwable e) {
    Throwable c = e.getCause();
    return c != null ? c : e;
  }

  static public boolean methodIsStatic(Method m) {
    return (m.getModifiers() & Modifier.STATIC) != 0;
  }

  static public boolean argumentCompatibleWithType(Object arg, Class type) {
    return arg == null ? !type.isPrimitive() : isInstanceX(type, arg);
  }

  static public void arraycopy(Object[] a, Object[] b) {
    if (a != null && b != null)
      arraycopy(a, 0, b, 0, Math.min(a.length, b.length));
  }

  static public void arraycopy(Object src, int srcPos, Object dest, int destPos, int n) {
    if (n != 0)
      System.arraycopy(src, srcPos, dest, destPos, n);
  }

  static public <A> A[] arrayOfType(Class<A> type, int n) {
    return makeArray(type, n);
  }

  static public <A> A[] arrayOfType(int n, Class<A> type) {
    return arrayOfType(type, n);
  }

  static public List<String> getClassNames(Collection l) {
    List<String> out = new ArrayList();
    if (l != null)
      for (Object o : l) out.add(o == null ? null : getClassName(o));
    return out;
  }

  static public boolean domainIsUnder(String domain, String mainDomain) {
    return eqic(domain, mainDomain) || ewic(domain, "." + mainDomain);
  }

  static public String theAGIBlueDomain() {
    return "agi.blue";
  }

  static public Throwable getException(Runnable r) {
    try {
      callF(r);
      return null;
    } catch (Throwable e) {
      return e;
    }
  }

  static public <A> boolean addIfNotNull(Collection<A> l, A a) {
    return a != null && l != null & l.add(a);
  }

  static public <A> void addIfNotNull(MultiSet<A> ms, A a) {
    if (a != null && ms != null)
      ms.add(a);
  }

  static public Map<String, Object> objectToMap(Object o) {
    try {
      if (o instanceof Map)
        return (Map) o;
      TreeMap<String, Object> map = new TreeMap();
      Class c = o.getClass();
      while (c != Object.class) {
        Field[] fields = c.getDeclaredFields();
        for (final Field field : fields) {
          if ((field.getModifiers() & Modifier.STATIC) != 0)
            continue;
          field.setAccessible(true);
          final Object value = field.get(o);
          if (value != null)
            map.put(field.getName(), value);
        }
        c = c.getSuperclass();
      }
      if (o instanceof DynamicObject)
        putAll(map, ((DynamicObject) o).fieldValues);
      return map;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public List<Map<String, Object>> objectToMap(Iterable l) {
    if (l == null)
      return null;
    List x = new ArrayList();
    for (Object o : l) x.add(objectToMap(o));
    return x;
  }

  static public List<String> javaTokPlusBrackets2(String s) {
    return tok_combineRoundCurlySquareBrackets_keep(javaTok(s));
  }

  static public List<String> parse3(String s) {
    return dropPunctuation(javaTokPlusPeriod(s));
  }

  static public boolean equalsIgnoreCase(String a, String b) {
    return eqic(a, b);
  }

  static public boolean equalsIgnoreCase(char a, char b) {
    return eqic(a, b);
  }

  static public Class primitiveToBoxedType(Class type) {
    if (type == boolean.class)
      return Boolean.class;
    if (type == int.class)
      return Integer.class;
    if (type == long.class)
      return Long.class;
    if (type == float.class)
      return Float.class;
    if (type == short.class)
      return Short.class;
    if (type == char.class)
      return Character.class;
    if (type == byte.class)
      return Byte.class;
    if (type == double.class)
      return Double.class;
    return null;
  }

  static public DynModule dm_currentModuleMandatory() {
    return dm_current_mandatory();
  }

  static public String getProgramID() {
    return nempty(programID) ? formatSnippetIDOpt(programID) : "?";
  }

  static public String getProgramID(Class c) {
    String id = (String) getOpt(c, "programID");
    if (nempty(id))
      return formatSnippetID(id);
    return "?";
  }

  static public String getProgramID(Object o) {
    return getProgramID(getMainClass(o));
  }

  static public AutoCloseable tempActivity(Object r) {
    return null;
  }

  static public long fixTimestamp(long timestamp) {
    return timestamp > now() ? 0 : timestamp;
  }

  static public Object costCenter() {
    return mc();
  }

  static public TreeSet<String> toCaseInsensitiveSet_treeSet(Iterable<String> c) {
    if (isCISet(c))
      return (TreeSet) c;
    TreeSet<String> set = caseInsensitiveSet_treeSet();
    addAll(set, c);
    return set;
  }

  static public TreeSet<String> toCaseInsensitiveSet_treeSet(String... x) {
    TreeSet<String> set = caseInsensitiveSet_treeSet();
    addAll(set, x);
    return set;
  }

  static public String makeRandomID(int length) {
    return makeRandomID(length, defaultRandomGenerator());
  }

  static public String makeRandomID(int length, Random random) {
    char[] id = new char[length];
    for (int i = 0; i < id.length; i++) id[i] = (char) ((int) 'a' + random.nextInt(26));
    return new String(id);
  }

  static public String makeRandomID(Random r, int length) {
    return makeRandomID(length, r);
  }

  static public TreeMap litCIMap(Object... x) {
    TreeMap map = caseInsensitiveMap();
    litmap_impl(map, x);
    return map;
  }

  static public String regexpReplaceIC(String s, String pat, Object f) {
    return regexReplaceIC(s, pat, f);
  }

  static public String regexpReplaceIC(String s, String pat, IF1<Matcher, String> f) {
    return regexReplaceIC(s, pat, f);
  }

  static public String formatDouble(double d, int digits) {
    String format = digits <= 0 ? "0" : "0." + rep(digits, '#');
    return decimalFormatEnglish(format, d);
  }

  static public Charset utf8charset_cache;

  static public Charset utf8charset() {
    if (utf8charset_cache == null)
      utf8charset_cache = utf8charset_load();
    return utf8charset_cache;
  }

  static public Charset utf8charset_load() {
    return Charset.forName("UTF-8");
  }

  static public CloseableIterableIterator emptyCloseableIterableIterator_instance = new CloseableIterableIterator() {

    public Object next() {
      throw fail();
    }

    public boolean hasNext() {
      return false;
    }
  };

  static public <A> CloseableIterableIterator<A> emptyCloseableIterableIterator() {
    return emptyCloseableIterableIterator_instance;
  }

  static public CloseableIterableIterator<String> linesFromReader(Reader r) {
    final BufferedReader br = bufferedReader(r);
    return iteratorFromFunction_f0_autoCloseable(new F0<String>() {

      public String get() {
        try {
          return readLineFromReaderWithClose(br);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret readLineFromReaderWithClose(br);";
      }
    }, _wrapIOCloseable(r));
  }

  static public BufferedReader utf8bufferedReader(InputStream in) {
    try {
      return bufferedReader(_registerIOWrap(new InputStreamReader(in, "UTF-8"), in));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public BufferedReader utf8bufferedReader(File f) {
    try {
      return utf8bufferedReader(newFileInputStream(f));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public GZIPInputStream newGZIPInputStream(File f) {
    return gzInputStream(f);
  }

  static public GZIPInputStream newGZIPInputStream(InputStream in) {
    return gzInputStream(in);
  }

  static public File newFile(File base, String... names) {
    for (String name : names) base = new File(base, name);
    return base;
  }

  static public File newFile(String name) {
    return name == null ? null : new File(name);
  }

  static public File newFile(String base, String... names) {
    return newFile(newFile(base), names);
  }

  static public int indexOfIgnoreCase(List<String> a, String b) {
    return indexOfIgnoreCase(a, b, 0);
  }

  static public int indexOfIgnoreCase(List<String> a, String b, int i) {
    int n = a == null ? 0 : a.size();
    for (; i < n; i++) if (eqic(a.get(i), b))
      return i;
    return -1;
  }

  static public int indexOfIgnoreCase(String a, String b) {
    return indexOfIgnoreCase_manual(a, b);
  }

  static public int indexOfIgnoreCase(String a, String b, int i) {
    return indexOfIgnoreCase_manual(a, b, i);
  }

  static public boolean endsWithIgnoreCase(String a, String b) {
    int la = l(a), lb = l(b);
    return la >= lb && regionMatchesIC(a, la - lb, b, 0, lb);
  }

  static public boolean endsWithIgnoreCase(String a, String b, Matches m) {
    if (!endsWithIgnoreCase(a, b))
      return false;
    if (m != null)
      m.m = new String[] { substring(a, 0, l(a) - l(b)) };
    return true;
  }

  static public <A> String joinWithSemicolon(Iterable<A> l) {
    return join("; ", l);
  }

  static public void litmap_impl_noOverwrite(Map map, Object... x) {
    if (x != null)
      for (int i = 0; i < x.length - 1; i += 2) putIfNotThere(map, x[i], x[i + 1]);
  }

  static public List<String> trimAll(Collection<String> l) {
    List<String> l2 = new ArrayList();
    if (l != null)
      for (String s : l) l2.add(trim(s));
    return l2;
  }

  static public List<String> splitAt(String s, String splitter) {
    if (empty(splitter))
      return null;
    List<String> parts = new ArrayList();
    int i = 0;
    if (s != null)
      while (i < l(s)) {
        int j = indexOf(s, splitter, i);
        if (j < 0)
          j = l(s);
        parts.add(substring(s, i, j));
        i = j + l(splitter);
      }
    return parts;
  }

  static public List<String> splitAtColon(String s) {
    return empty(s) ? emptyList() : asList(s.split(":"));
  }

  public static boolean isSnippetID(String s) {
    try {
      parseSnippetID(s);
      return true;
    } catch (RuntimeException e) {
      return false;
    }
  }

  static public String snippetImageURL(long snippetID) {
    return snippetImageURL(fsI(snippetID));
  }

  static public String snippetImageURL(String snippetID) {
    return snippetImageURL(snippetID, "png");
  }

  static public String snippetImageURL(String snippetID, String contentType) {
    if (snippetID == null || isURL(snippetID))
      return snippetID;
    long id = parseSnippetID(snippetID);
    String url;
    if (isImageServerSnippet(id))
      url = imageServerLink(id);
    else
      url = "https://botcompany.de/img/" + id;
    return url;
  }

  static public double toDouble(Object o) {
    if (o instanceof Number)
      return ((Number) o).doubleValue();
    if (o instanceof BigInteger)
      return ((BigInteger) o).doubleValue();
    if (o instanceof String)
      return parseDouble(((String) o));
    if (o == null)
      return 0.0;
    throw fail(o);
  }

  static public TimeZone getTimeZone(String name) {
    return TimeZone.getTimeZone(name);
  }

  static public String standardTimeZone_name = "Europe/Berlin";

  static public String standardTimeZone() {
    return standardTimeZone_name;
  }

  static public File loadLibrary(String snippetID) {
    return loadBinarySnippet(snippetID);
  }

  static public String quoteIfNotIdentifierOrInteger(String s) {
    if (s == null)
      return null;
    return isJavaIdentifier(s) || isInteger(s) ? s : quote(s);
  }

  static public Map<String, String> singular_specials = litmap("children", "child", "images", "image", "chess", "chess");

  static public Set<String> singular_specials2 = litciset("time", "machine", "line", "rule");

  static public String singular(String s) {
    if (s == null)
      return null;
    {
      String __1 = singular_specials.get(s);
      if (!empty(__1))
        return __1;
    }
    if (singular_specials2.contains(dropSuffix("s", afterLastSpace(s))))
      return dropSuffix("s", s);
    if (s.endsWith("ness"))
      return s;
    if (s.endsWith("ges"))
      return dropSuffix("s", s);
    if (endsWith(s, "bases"))
      return dropLast(s);
    s = dropSuffix("es", s);
    s = dropSuffix("s", s);
    return s;
  }

  static public Map<String, java.util.regex.Pattern> compileRegexpIC_cache = syncMRUCache(10);

  static public java.util.regex.Pattern compileRegexpIC(String pat) {
    java.util.regex.Pattern p = compileRegexpIC_cache.get(pat);
    if (p == null) {
      try {
        compileRegexpIC_cache.put(pat, p = java.util.regex.Pattern.compile(pat, Pattern.CASE_INSENSITIVE));
      } catch (PatternSyntaxException e) {
        throw rethrow(wrapPatternSyntaxException(e));
      }
    }
    return p;
  }

  static public boolean startsWithLetterOrDigit(String s) {
    return nempty(s) && Character.isLetterOrDigit(s.charAt(0));
  }

  static public String regexpQuote(String s) {
    return s.length() == 0 ? "" : Pattern.quote(s);
  }

  static public <A> List<A> takeLast(List<A> l, int n) {
    return newSubList(l, l(l) - n);
  }

  static public <A> List<A> takeLast(int n, List<A> l) {
    return takeLast(l, n);
  }

  static public String takeLast(int n, String s) {
    return substring(s, l(s) - n);
  }

  static public String takeLast(String s, int n) {
    return substring(s, l(s) - n);
  }

  static public String[] find2(List<String> pat, List<String> tok) {
    for (int idx = 0; idx < tok.size(); idx += 2) {
      String[] result = find2(pat, tok, idx);
      if (result != null)
        return result;
    }
    return null;
  }

  static public String[] find2(List<String> pat, List<String> tok, int idx) {
    if (idx + pat.size() > tok.size())
      return null;
    List<String> result = new ArrayList();
    for (int i = 1; i < pat.size(); i += 2) {
      String p = pat.get(i), t = tok.get(idx + i);
      if (eq(p, "*"))
        result.add(t);
      else if (!p.equalsIgnoreCase(t))
        return null;
    }
    return toStringArray(result);
  }

  static public List<String> tok_combineRoundBrackets_keep(List<String> tok) {
    List<String> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && eq(t, "(")) {
        int j = findEndOfBracketPart(tok, i);
        l.add(joinSubList(tok, i, j));
        i = j - 1;
      } else
        l.add(t);
    }
    return l;
  }

  static public List<String> tok_combineRoundOrCurlyBrackets_keep(List<String> tok) {
    List<String> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && eqOneOf(t, "{", "(")) {
        int j = findEndOfBracketPart(tok, i);
        l.add(joinSubList(tok, i, j));
        i = j - 1;
      } else
        l.add(t);
    }
    return l;
  }

  static public int defaultTokenizerCacheSize() {
    return 1000;
  }

  static public <A> int indexOfSubList(List<A> x, List<A> y) {
    return indexOfSubList(x, y, 0);
  }

  static public <A> int indexOfSubList(List<A> x, List<A> y, int i) {
    outer: for (; i + l(y) <= l(x); i++) {
      for (int j = 0; j < l(y); j++) if (neq(x.get(i + j), y.get(j)))
        continue outer;
      return i;
    }
    return -1;
  }

  static public <A> int indexOfSubList(List<A> x, A[] y, int i) {
    outer: for (; i + l(y) <= l(x); i++) {
      for (int j = 0; j < l(y); j++) if (neq(x.get(i + j), y[j]))
        continue outer;
      return i;
    }
    return -1;
  }

  static public String trimJoin(List<String> s) {
    return trim(join(s));
  }

  static public <A> A[] newObjectArrayOfSameType(A[] a) {
    return newObjectArrayOfSameType(a, a.length);
  }

  static public <A> A[] newObjectArrayOfSameType(A[] a, int n) {
    return (A[]) Array.newInstance(a.getClass().getComponentType(), n);
  }

  static public List<String> replaceSubList(List<String> l, List<String> x, List<String> y) {
    return replaceSublist(l, x, y);
  }

  static public <A> List<A> replaceSubList(List<A> l, int fromIndex, int toIndex, List<A> y) {
    return replaceSublist(l, fromIndex, toIndex, y);
  }

  static public boolean cicAtOddPosition(List<String> l, String s) {
    int n = l(l);
    for (int i = 1; i < n; i += 2) if (eqic(l.get(i), s))
      return true;
    return false;
  }

  static public String renderStructs(Object... params) {
    List<String> l = new ArrayList();
    if (odd(l(params)))
      l.add(addSuffix(str(first(params)), ":"));
    for (int i = l(params) & 1; i + 1 < l(params); i += 2) l.add(params[i] + "=" + sfu(params[i + 1]));
    return joinWithSpace(l);
  }

  static public class allSpreads_Data {

    public int n;

    public List<Integer> collecting;
  }

  static public class allSpreads_StackEntry {

    public int remaining, take;

    public int position;

    public Object step(List<allSpreads_StackEntry> stack, allSpreads_Data d) {
      if (position == 0) {
        if (l(d.collecting) >= d.n - 1) {
          List<Integer> result = listPlus(d.collecting, remaining);
          popLast(stack);
          return result;
        }
        position++;
      }
      if (position == 1) {
        if (take <= remaining) {
          d.collecting.add(take);
          allSpreads_StackEntry e = new allSpreads_StackEntry();
          e.remaining = remaining - take;
          stack.add(e);
          position++;
        } else
          popLast(stack);
      } else if (position == 2) {
        removeLast(d.collecting);
        take++;
        position = 1;
      }
      return null;
    }
  }

  static public IterableIterator<List<Integer>> allSpreads(final int toSpread, final int buckets) {
    final allSpreads_Data d = new allSpreads_Data();
    d.n = buckets;
    d.collecting = new ArrayList();
    final List<allSpreads_StackEntry> stack = new ArrayList();
    allSpreads_StackEntry e = new allSpreads_StackEntry();
    e.remaining = toSpread;
    stack.add(e);
    return iff(new F0<Object>() {

      public Object get() {
        try {
          while (nempty(stack)) {
            ping();
            {
              Object __1 = last(stack).step(stack, d);
              if (__1 != null)
                return __1;
            }
          }
          return endMarker();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "while (nempty(stack)) {\r\n      ping();\r\n      try object last(stack).step(sta...";
      }
    });
  }

  static public String structureForUser(Object o) {
    return beautifyStructure(struct_noStringSharing(o));
  }

  static public Class<?> getClass(String name) {
    try {
      return Class.forName(name);
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static public Class getClass(Object o) {
    return o instanceof Class ? (Class) o : o.getClass();
  }

  static public Class getClass(Object realm, String name) {
    try {
      try {
        return getClass(realm).getClassLoader().loadClass(classNameToVM(name));
      } catch (ClassNotFoundException e) {
        return null;
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String classNameToVM(String name) {
    return name.replace(".", "$");
  }

  static public Map synchroMap() {
    return synchroHashMap();
  }

  static public <A, B> Map<A, B> synchroMap(Map<A, B> map) {
    return Collections.synchronizedMap(map);
  }

  static public boolean checkCondition(Object condition, Object... args) {
    return isTrue(callF(condition, args));
  }

  static public <A> boolean checkCondition(IF1<A, Boolean> condition, A arg) {
    return isTrue(callF(condition, arg));
  }

  static public boolean emptyString(String s) {
    return s == null || s.length() == 0;
  }

  static public String htmlencode_forParams_v2(String s) {
    if (s == null)
      return "";
    StringBuilder out = new StringBuilder(Math.max(16, s.length()));
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c > 127 || c == '"' || c == '<' || c == '>' || c == '&') {
        out.append("&#");
        out.append((int) c);
        out.append(';');
      } else
        out.append(c);
    }
    return out.toString();
  }

  public static long parseSnippetID(String snippetID) {
    long id = Long.parseLong(shortenSnippetID(snippetID));
    if (id == 0)
      throw fail("0 is not a snippet ID");
    return id;
  }

  static public Object callFunction(Object f, Object... args) {
    return callF(f, args);
  }

  static public <A> WeakReference<A> newWeakReference(A a) {
    return a == null ? null : new WeakReference(a);
  }

  static public void removeSubList(List l, int from, int to) {
    if (l != null)
      subList(l, from, to).clear();
  }

  static public void removeSubList(List l, int from) {
    if (l != null)
      subList(l, from).clear();
  }

  static public <A, B extends A> void copyListPart(List<B> a, int i1, List<A> b, int i2, int n) {
    if (a == null || b == null)
      return;
    for (int i = 0; i < n; i++) b.set(i2 + i, a.get(i1 + i));
  }

  static public int maxStringLength(Collection<String> l) {
    int n = 0;
    if (l != null)
      for (String s : l) n = max(n, l(s));
    return n;
  }

  static public String rpad(String s, int l) {
    return rpad(s, l, ' ');
  }

  static public String rpad(String s, int l, char c) {
    return lengthOfString(s) >= l ? s : s + rep(c, l - lengthOfString(s));
  }

  static public String rpad(int l, String s) {
    return rpad(s, l);
  }

  static public int countLines(String s) {
    return l(toLines(s));
  }

  static public <A, B> A firstOfPair(Pair<A, B> p) {
    return p == null ? null : p.a;
  }

  static public <A, B> B secondOfPair(Pair<A, B> p) {
    return p == null ? null : p.b;
  }

  static public int findEndOfCurlyBracketPart(List<String> cnc, int i) {
    int j = i + 2, level = 1;
    while (j < cnc.size()) {
      if (eq(cnc.get(j), "{"))
        ++level;
      else if (eq(cnc.get(j), "}"))
        --level;
      if (level == 0)
        return j + 1;
      ++j;
    }
    return cnc.size();
  }

  static public <A> List<A> newSubList(List<A> l, int startIndex, int endIndex) {
    return cloneList(subList(l, startIndex, endIndex));
  }

  static public <A> List<A> newSubList(List<A> l, int startIndex) {
    return cloneList(subList(l, startIndex));
  }

  static public Object vm_generalMap_get(Object key) {
    return vm_generalMap().get(key);
  }

  static public void swingAndWait(Runnable r) {
    try {
      if (isAWTThread())
        r.run();
      else
        EventQueue.invokeAndWait(addThreadInfoToRunnable(r));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Object swingAndWait(final Object f) {
    if (isAWTThread())
      return callF(f);
    else {
      final Var result = new Var();
      swingAndWait(new Runnable() {

        public void run() {
          try {
            result.set(callF(f));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "result.set(callF(f));";
        }
      });
      return result.get();
    }
  }

  static public <A extends Component> A revalidate(final A c) {
    if (c == null || !c.isShowing())
      return c;
    {
      swing(new Runnable() {

        public void run() {
          try {
            c.revalidate();
            c.repaint();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "// magic combo to actually relayout and repaint\r\n    c.revalidate();\r\n    c.r...";
        }
      });
    }
    return c;
  }

  static public void revalidate(JFrame f) {
    revalidate((Component) f);
  }

  static public void revalidate(JInternalFrame f) {
    revalidate((Component) f);
  }

  static public JFrame getFrame(final Object _o) {
    return swing(new F0<JFrame>() {

      public JFrame get() {
        try {
          Object o = _o;
          if (o instanceof ButtonGroup)
            o = first(buttonsInGroup((ButtonGroup) o));
          if (!(o instanceof Component))
            return null;
          Component c = (Component) o;
          while (c != null) {
            if (c instanceof JFrame)
              return (JFrame) c;
            c = c.getParent();
          }
          return null;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "O o = _o;\r\n    if (o instanceof ButtonGroup) o = first(buttonsInGroup((Button...";
      }
    });
  }

  static public boolean isStringStartingWith(Object o, String prefix) {
    return o instanceof String && ((String) o).startsWith(prefix);
  }

  static public Map<String, String> codeAnalysis_identifierSafetyMap() {
    return mechHashMap("JavaX Identifier Safety");
  }

  static public Set<String> tok_allIdentifiers(String s) {
    return new HashSet<String>(filter(__56 -> isIdentifier(__56), javaTokC(s)));
  }

  static public boolean codeAnalysis_isSafeIdentifier(String id) {
    return startsWith(id, "$");
  }

  static public List<String> tokSplitAtComma(String s) {
    List<String> tok = javaTok(s);
    List<String> l = new ArrayList();
    while (l(tok) > 1) {
      int i = smartIndexOf(tok, ",");
      l.add(trim(join(subList(tok, 0, i))));
      tok = subList(tok, i + 1);
    }
    return l;
  }

  static public List<String> simplifySafetyTags(Collection<String> tags) {
    List<String> l = uniquifyList(tags);
    if (l.contains("safe") && containsAnythingNeq(l, "safe"))
      return listMinus(l, "safe");
    return l;
  }

  static public String simplifySafetyTags(String tags) {
    List<String> l = tokSplitAtComma(tags);
    Collection<String> l2 = simplifySafetyTags(l);
    return l(l2) != l(l) ? joinWithComma(l2) : tags;
  }

  static public String loadTextFile_trim(String fileName) {
    return trim(loadTextFile(fileName));
  }

  static public String loadTextFile_trim(File f, String defaultContents) {
    return trim(loadTextFile(f, defaultContents));
  }

  static public String loadTextFile_trim(File fileName) {
    return trim(loadTextFile(fileName));
  }

  static public String loadTextFile_trim(String fileName, String defaultContents) {
    return trim(loadTextFile(fileName, defaultContents));
  }

  static public String _userHome;

  static public String userHome() {
    if (_userHome == null)
      return actualUserHome();
    return _userHome;
  }

  static public File userHome(String path) {
    return new File(userDir(), path);
  }

  static public Map<String, String> parseStdFunctionsList(String snippetSrc) {
    return parseStdFunctionsList(snippetSrc, new LinkedHashMap());
  }

  static public Map<String, String> parseStdFunctionsList(String snippetSrc, Map<String, String> map) {
    List<String> tok = javaTok(snippetSrc);
    int i = findCodeTokens(tok, "standardFunctions", "=", "litlist", "(");
    int opening = i + 6;
    int closing = indexOf(tok, ")", opening) - 1;
    for (i = opening + 2; i < closing; i += 4) {
      String[] f = unquote(tok.get(i)).split("/");
      map.put(f[1], f[0]);
    }
    return map;
  }

  static public String loadSnippetSilently(Snippet s) {
    return loadSnippetQuietly(s);
  }

  static public String loadSnippetSilently(String snippetID) {
    return loadSnippetQuietly(snippetID);
  }

  static public File getProgramFile(String progID, String fileName) {
    if (new File(fileName).isAbsolute())
      return new File(fileName);
    return new File(getProgramDir(progID), fileName);
  }

  static public File getProgramFile(String fileName) {
    return getProgramFile(getProgramID(), fileName);
  }

  static public String standardCredentials() {
    String user = standardCredentialsUser();
    String pass = standardCredentialsPass();
    if (nempty(user) && nempty(pass))
      return "&_user=" + urlencode(user) + "&_pass=" + urlencode(pass);
    return "";
  }

  static public IResourceLoader vm_getResourceLoader() {
    return proxy(IResourceLoader.class, vm_generalMap_get("_officialResourceLoader"));
  }

  static public String fsIOpt(String s) {
    return formatSnippetIDOpt(s);
  }

  static public String loadCachedTranspilation(String id) {
    try {
      return loadTextFilePossiblyGZipped(getCachedTranspilationFile(id));
    } catch (Throwable __e) {
      return null;
    }
  }

  static public boolean machineIsOffline() {
    return isFalse(callF(vmGeneralMap_get("areWeOnline")));
  }

  static public boolean isOfflineMode() {
    return eq("1", trim(loadProgramTextFile("#1005806", "offline-mode")));
  }

  static public boolean isLocalSnippet(String snippetID) {
    return isLocalSnippetID(snippetID);
  }

  static public boolean isLocalSnippet(long snippetID) {
    return isLocalSnippetID(snippetID);
  }

  static public String md5(String text) {
    try {
      if (text == null)
        return "-";
      return bytesToHex(md5_impl(toUtf8(text)));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String md5(byte[] data) {
    if (data == null)
      return "-";
    return bytesToHex(md5_impl(data));
  }

  static public byte[] md5_impl(byte[] data) {
    try {
      return MessageDigest.getInstance("MD5").digest(data);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String md5(File file) {
    return md5OfFile(file);
  }

  static public String getServerTranspiled(String snippetID) {
    return getServerTranspiled(snippetID, null);
  }

  static public boolean getServerTranspiled_printStackTrace = false;

  static public String getServerTranspiled(String snippetID, String expectedMD5) {
    try {
      if (getServerTranspiled_printStackTrace)
        printStackTrace();
      long id = parseSnippetID(snippetID);
      String text = loadPage_utf8(tb_mainServer() + "/tb-int/get-transpiled.php?raw=1&withlibs=1&id=" + id + "&utf8=1" + (l(expectedMD5) > 1 ? "&md5=" + urlencode(expectedMD5) : "") + standardCredentials());
      if (nempty(text) && neq(text, "SAME"))
        saveTranspiledCode(snippetID, text);
      return text;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String formatSnippetID(String id) {
    return "#" + parseSnippetID(id);
  }

  static public String formatSnippetID(long id) {
    return "#" + id;
  }

  static public void printExceptionShort(Throwable e) {
    printExceptionShort("", e);
  }

  static public void printExceptionShort(String prefix, Throwable e) {
    print(prefix, exceptionToStringShort(e));
  }

  static public <A, B> B mapPut_returnValue(Map<A, B> map, A key, B value) {
    mapPut(map, key, value);
    return value;
  }

  static public String uniqueFileNameUsingMD5_80_v2(String fullName) {
    return uniqueFileNameUsingMD5_80_v2(fullName, md5(fullName));
  }

  static public String uniqueFileNameUsingMD5_80_v2(String fullName, String md5) {
    return takeFirst(80 - 33, fileNameEncode(fullName)) + " - " + md5;
  }

  static public File javaxCachesDir_dir;

  static public File javaxCachesDir() {
    return javaxCachesDir_dir != null ? javaxCachesDir_dir : new File(userHome(), "JavaX-Caches");
  }

  static public File javaxCachesDir(String sub) {
    return newFile(javaxCachesDir(), sub);
  }

  static public void saveTextFileUnlessExists(File f, String contents) {
    if (f != null && !f.exists())
      saveTextFile(f, contents);
  }

  static public ThreadLocal<VF1<File>> checkFileNotTooBigToRead_tl = new ThreadLocal();

  static public void checkFileNotTooBigToRead(File f) {
    callF(checkFileNotTooBigToRead_tl.get(), f);
  }

  static public long recommendedTranspilationDateForStandardFunction(String sfName) {
    return toLong(mechMap("Recommended SF Transpilation Date").get(sfName));
  }

  static public void clearTokens(List<String> tok) {
    clearAllTokens(tok);
  }

  static public void clearTokens(List<String> tok, int i, int j) {
    clearAllTokens(tok, i, j);
  }

  static public void clearTokens(List<String> tok, IntRange r) {
    clearAllTokens(tok, r.start, r.end);
  }

  static public JavaXClassLoader hotwire_makeClassLoader(List<File> files) {
    Collection<String> toShare = hotwire_classesToShare();
    return nempty(toShare) ? new JavaXClassLoaderWithParent2(null, files, myClassLoader(), cloneList(toShare)) : new JavaXClassLoader(null, files);
  }

  static public String assertIsIdentifier(String s) {
    if (!isIdentifier(s))
      throw fail("Not an identifier: " + quote(s));
    return s;
  }

  static public String assertIsIdentifier(String msg, String s) {
    if (!isIdentifier(s))
      throw fail(msg + " - Not an identifier: " + quote(s));
    return s;
  }

  static public boolean veryQuickJava_silent = true;

  static public boolean veryQuickJava_useCompilerBot = true;

  static public ThreadLocal<String> veryQuickJava_transpiled = new ThreadLocal();

  static public Object veryQuickJava3_cacheFunction;

  static public Class veryQuickJava3(String mainJava) {
    return veryQuickJava3(mainJava, emptyList());
  }

  static public Class veryQuickJava3(String mainJava, List<String> libs) {
    Class c = (Class) (callF(veryQuickJava3_cacheFunction, mainJava, libs));
    if (c != null)
      return c;
    transpileRaw_silent = veryQuickJava_silent;
    String src = transpileRaw(mainJava);
    if (empty(src)) {
      printWithIndent("JAVAX> ", mainJava);
      throw fail("Transpiler returned empty result");
    }
    if (veryQuickJava_transpiled.get() != null)
      veryQuickJava_transpiled.set(src);
    return veryQuickJava_finish(src, libs);
  }

  static public File saveTextFile(String fileName, String contents) throws IOException {
    CriticalAction action = beginCriticalAction("Saving file " + fileName + " (" + l(contents) + " chars)");
    try {
      File file = new File(fileName);
      mkdirsForFile(file);
      String tempFileName = fileName + "_temp";
      File tempFile = new File(tempFileName);
      if (contents != null) {
        if (tempFile.exists())
          try {
            String saveName = tempFileName + ".saved." + now();
            copyFile(tempFile, new File(saveName));
          } catch (Throwable e) {
            printStackTrace(e);
          }
        FileOutputStream fileOutputStream = newFileOutputStream(tempFile.getPath());
        OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream, "UTF-8");
        PrintWriter printWriter = new PrintWriter(outputStreamWriter);
        printWriter.print(contents);
        printWriter.close();
      }
      if (file.exists() && !file.delete())
        throw new IOException("Can't delete " + fileName);
      if (contents != null)
        if (!tempFile.renameTo(file))
          throw new IOException("Can't rename " + tempFile + " to " + file);
      vmBus_send("wroteFile", file);
      return file;
    } finally {
      action.done();
    }
  }

  static public File saveTextFile(File fileName, String contents) {
    try {
      saveTextFile(fileName.getPath(), contents);
      return fileName;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public ThreadLocal<Long> saveTiming_last = new ThreadLocal();

  static public void saveTiming(long ms) {
    print(ms + " ms");
    saveTiming_noPrint(ms);
  }

  static public void saveTiming_noPrint(long ms) {
    saveTiming_last.set(ms);
  }

  static public void closeAutoCloseables(Collection<AutoCloseable> l) {
    if (l != null)
      for (AutoCloseable c : l) {
        try {
          c.close();
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
  }

  static public <A> List<A> getAndClearList(Collection<A> l) {
    if (l == null)
      return emptyList();
    synchronized (collectionMutex(l)) {
      List<A> out = cloneList(l);
      l.clear();
      return out;
    }
  }

  static public <A> Set<A> synchronizedSet() {
    return synchroHashSet();
  }

  static public <A> Set<A> synchronizedSet(Set<A> set) {
    return Collections.synchronizedSet(set);
  }

  static public <A> A _get(List<A> l, int idx) {
    return l != null && idx >= 0 && idx < l(l) ? l.get(idx) : null;
  }

  static public Object _get(Object o, String field) {
    return get(o, field);
  }

  static public Object _get(String field, Object o) {
    return get(o, field);
  }

  static public <A> A _get(A[] l, int idx) {
    return idx >= 0 && idx < l(l) ? l[idx] : null;
  }

  static public <A> A[] makeArray(Class<A> type, int n) {
    return (A[]) Array.newInstance(type, n);
  }

  static public <A, B> Map<A, B> putAll(Map<A, B> a, Map<? extends A, ? extends B> b) {
    if (a != null && b != null)
      a.putAll(b);
    return a;
  }

  static public <A, B> MultiMap<A, B> putAll(MultiMap<A, B> a, Map<? extends A, ? extends B> b) {
    if (a != null)
      a.putAll((Map) b);
    return a;
  }

  static public <A, B> Map<A, B> putAll(Map<A, B> a, Object... b) {
    if (a != null)
      litmap_impl(a, b);
    return a;
  }

  static public List<String> tok_combineRoundCurlySquareBrackets_keep(List<String> tok) {
    List<String> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && eqOneOf(t, "{", "(", "[")) {
        int j = findEndOfBracketPart2(tok, i);
        l.add(joinSubList(tok, i, j));
        i = j - 1;
      } else
        l.add(t);
    }
    return l;
  }

  static public String formatSnippetIDOpt(String s) {
    return isSnippetID(s) ? formatSnippetID(s) : s;
  }

  static public Class getMainClass() {
    return mc();
  }

  static public Class getMainClass(Object o) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class && eq(((Class) o).getName(), "x30"))
        return (Class) o;
      ClassLoader cl = (o instanceof Class ? (Class) o : o.getClass()).getClassLoader();
      return cl == null ? null : cl.loadClass("main");
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isCISet(Iterable<String> l) {
    return l instanceof TreeSet && ((TreeSet) l).comparator() == caseInsensitiveComparator();
  }

  static public Random defaultRandomGenerator() {
    return ThreadLocalRandom.current();
  }

  static public String regexReplaceIC(String s, String pat, Object f) {
    return regexReplace(regexpMatcherIC(pat, s), f);
  }

  static public String decimalFormatEnglish(String format, double d) {
    return new java.text.DecimalFormat(format, new java.text.DecimalFormatSymbols(Locale.ENGLISH)).format(d);
  }

  static public BufferedReader bufferedReader(Reader r) {
    return bufferedReader(r, 8192);
  }

  static public BufferedReader bufferedReader(Reader r, int bufSize) {
    return r instanceof BufferedReader ? (BufferedReader) r : _registerIOWrap(new BufferedReader(r, bufSize), r);
  }

  static public <A> CloseableIterableIterator<A> iteratorFromFunction_f0_autoCloseable(final F0<A> f, final AutoCloseable closeable) {
    class IFF2 extends CloseableIterableIterator<A> {

      public A a;

      public boolean done = false;

      public boolean hasNext() {
        getNext();
        return !done;
      }

      public A next() {
        getNext();
        if (done)
          throw fail();
        A _a = a;
        a = null;
        return _a;
      }

      public void getNext() {
        if (done || a != null)
          return;
        a = f.get();
        done = a == null;
      }

      public void close() throws Exception {
        if (closeable != null)
          closeable.close();
      }
    }
    ;
    return new IFF2();
  }

  static public String readLineFromReaderWithClose(BufferedReader r) {
    try {
      String s = r.readLine();
      if (s == null)
        r.close();
      return s;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public AutoCloseable _wrapIOCloseable(final AutoCloseable c) {
    return c == null ? null : new AutoCloseable() {

      public String toString() {
        return "c.close();\r\n    _registerIO(c, null, false);";
      }

      public void close() throws Exception {
        c.close();
        _registerIO(c, null, false);
      }
    };
  }

  static public <A> A _registerIOWrap(A wrapper, Object wrapped) {
    return wrapper;
  }

  static public FileInputStream newFileInputStream(File path) throws IOException {
    return newFileInputStream(path.getPath());
  }

  static public FileInputStream newFileInputStream(String path) throws IOException {
    FileInputStream f = new FileInputStream(path);
    _registerIO(f, path, true);
    return f;
  }

  static public int gzInputStream_defaultBufferSize = 65536;

  static public GZIPInputStream gzInputStream(File f) {
    try {
      return gzInputStream(new FileInputStream(f));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public GZIPInputStream gzInputStream(File f, int bufferSize) {
    try {
      return gzInputStream(new FileInputStream(f), bufferSize);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public GZIPInputStream gzInputStream(InputStream in) {
    return gzInputStream(in, gzInputStream_defaultBufferSize);
  }

  static public GZIPInputStream gzInputStream(InputStream in, int bufferSize) {
    try {
      return _registerIOWrap(new GZIPInputStream(in, gzInputStream_defaultBufferSize), in);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int indexOfIgnoreCase_manual(String a, String b) {
    return indexOfIgnoreCase_manual(a, b, 0);
  }

  static public int indexOfIgnoreCase_manual(String a, String b, int i) {
    int la = strL(a), lb = strL(b);
    if (la < lb)
      return -1;
    int n = la - lb;
    loop: for (; i <= n; i++) {
      for (int j = 0; j < lb; j++) {
        char c1 = a.charAt(i + j), c2 = b.charAt(j);
        if (!eqic(c1, c2))
          continue loop;
      }
      return i;
    }
    return -1;
  }

  static public <A, B> void putIfNotThere(Map<A, B> map, A key, B value) {
    if (map != null && key != null && value != null && !map.containsKey(key))
      map.put(key, value);
  }

  static public String fsI(String id) {
    return formatSnippetID(id);
  }

  static public String fsI(long id) {
    return formatSnippetID(id);
  }

  static public boolean isURL(String s) {
    return startsWithOneOf(s, "http://", "https://", "file:");
  }

  static public boolean isImageServerSnippet(long id) {
    return id >= 1100000 && id < 1200000;
  }

  static public String imageServerLink(String md5OrID) {
    if (possibleMD5(md5OrID))
      return "https://botcompany.de/images/md5/" + md5OrID;
    return imageServerLink(parseSnippetID(md5OrID));
  }

  static public String imageServerLink(long id) {
    return "https://botcompany.de/images/" + id;
  }

  static public File loadBinarySnippet(String snippetID) {
    IResourceLoader rl = vm_getResourceLoader();
    if (rl != null)
      return rl.loadLibrary(snippetID);
    return loadBinarySnippet_noResourceLoader(snippetID);
  }

  static public File loadBinarySnippet_noResourceLoader(String snippetID) {
    try {
      long id = parseSnippetID(snippetID);
      if (isImageServerSnippet(id))
        return loadImageAsFile(snippetID);
      File f = DiskSnippetCache_getLibrary(id);
      if (fileSize(f) == 0)
        f = loadDataSnippetToFile_noResourceLoader(snippetID);
      return f;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String afterLastSpace(String s) {
    return s == null ? null : substring(s, s.lastIndexOf(' ') + 1);
  }

  static public <A, B> Map<A, B> syncMRUCache(int size) {
    return synchroMap(new MRUCache(size));
  }

  static public RuntimeException wrapPatternSyntaxException(PatternSyntaxException e) {
    if (e == null)
      return null;
    String pat = e.getPattern();
    int i = e.getIndex();
    return new RuntimeException("Regular expression error between " + multiLineQuoteWithSpaces(substring(pat, 0, i)) + " and " + multiLineQuoteWithSpaces(substring(pat, i)) + " - " + e.getMessage());
  }

  static public int findEndOfBracketPart(List<String> cnc, int i) {
    int j = i + 2, level = 1;
    while (j < cnc.size()) {
      if (eqOneOf(cnc.get(j), "{", "("))
        ++level;
      else if (eqOneOf(cnc.get(j), "}", ")"))
        --level;
      if (level == 0)
        return j + 1;
      ++j;
    }
    return cnc.size();
  }

  static public <A> A popLast(List<A> l) {
    return liftLast(l);
  }

  static public <A> List<A> popLast(int n, List<A> l) {
    return liftLast(n, l);
  }

  static public void removeLast(List l) {
    if (!l.isEmpty())
      l.remove(l(l) - 1);
  }

  static public void removeLast(List l, int n) {
    removeSubList(l, l(l) - n);
  }

  static public void removeLast(int n, List l) {
    removeLast(l, n);
  }

  static public <A> IterableIterator<A> iff(Object f) {
    return iteratorFromFunction_withEndMarker(f);
  }

  static public IterableIterator iff(F0 f) {
    return iteratorFromFunction_withEndMarker(f);
  }

  static public <A> IterableIterator iff(IF0 f) {
    return iteratorFromFunction_withEndMarker(f);
  }

  static public Object endMarker() {
    return iteratorFromFunction_endMarker;
  }

  static public String beautifyStructure(String s) {
    List<String> tok = javaTokForStructure(s);
    structure_addTokenMarkers(tok);
    jreplace(tok, "lhm", "");
    return join(tok);
  }

  static public String struct_noStringSharing(Object o) {
    structure_Data d = new structure_Data();
    d.noStringSharing = true;
    return structure(o, d);
  }

  static public String shortenSnippetID(String snippetID) {
    if (snippetID.startsWith("#"))
      snippetID = snippetID.substring(1);
    String httpBlaBla = "http://tinybrain.de/";
    if (snippetID.startsWith(httpBlaBla))
      snippetID = snippetID.substring(httpBlaBla.length());
    return "" + parseLong(snippetID);
  }

  static public int lengthOfString(String s) {
    return s == null ? 0 : s.length();
  }

  static public Map vm_generalMap_map;

  static public Map vm_generalMap() {
    if (vm_generalMap_map == null)
      vm_generalMap_map = (Map) get(javax(), "generalMap");
    return vm_generalMap_map;
  }

  static public Runnable addThreadInfoToRunnable(final Object r) {
    final Object info = _threadInfo();
    return info == null ? asRunnable(r) : new Runnable() {

      public void run() {
        try {
          _inheritThreadInfo(info);
          callF(r);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "_inheritThreadInfo(info); callF(r);";
      }
    };
  }

  static public List<AbstractButton> buttonsInGroup(ButtonGroup g) {
    if (g == null)
      return ll();
    return asList(g.getElements());
  }

  static public Map<String, Pair<String, Map<String, String>>> mechHashMap_cache = synchroMap();

  static public Map<String, String> mechHashMap(String listName) {
    Pair<String, Map<String, String>> p = mechHashMap_cache.get(listName);
    String text = mechList_raw(listName);
    if (p != null && eq(p.a, text))
      return p.b;
    String parsing = first(mechList_opt(listName + " | Parsing"));
    p = pair(text, (Map<String, String>) (parsing != null ? asHashMap((Map<String, String>) callAndMake(parsing, text)) : parseDoubleArrowMap(new HashMap(), tlft(text))));
    mechHashMap_cache.put(listName, p);
    return p.b;
  }

  static public <A> List<A> uniquifyList(Collection<A> l) {
    if (l == null)
      return null;
    if (l(l) < 2)
      return asList(l);
    HashSet<A> set = new HashSet();
    List<A> out = new ArrayList();
    for (A a : l) if (set.add(a))
      out.add(a);
    return out;
  }

  static public <A> boolean containsAnythingNeq(Collection<A> l, A a) {
    for (A x : unnull(l)) if (neq(x, a))
      return true;
    return false;
  }

  static public <A> List<A> listMinus(Collection<A> l, Object... stuff) {
    if (l == null)
      return null;
    List l2 = similarEmptyList(l);
    Set set = lithashset(stuff);
    for (Object o : l) if (!set.contains(o))
      l2.add(o);
    return l2;
  }

  static public String actualUserHome_value;

  static public String actualUserHome() {
    if (actualUserHome_value == null) {
      if (isAndroid())
        actualUserHome_value = "/storage/emulated/0/";
      else
        actualUserHome_value = System.getProperty("user.home");
    }
    return actualUserHome_value;
  }

  static public File actualUserHome(String sub) {
    return newFile(new File(actualUserHome()), sub);
  }

  static public File userDir() {
    return new File(userHome());
  }

  static public File userDir(String path) {
    return new File(userHome(), path);
  }

  static public File getProgramDir() {
    return programDir();
  }

  static public File getProgramDir(String snippetID) {
    return programDir(snippetID);
  }

  static public String standardCredentialsUser() {
    return trim(loadTextFile(oneOfTheFiles(javaxSecretDir("tinybrain-username"), userDir(".tinybrain/username"))));
  }

  static public String standardCredentialsPass() {
    return trim(loadTextFile(oneOfTheFiles(javaxSecretDir("tinybrain-userpass"), userDir(".tinybrain/userpass"))));
  }

  static public <A> A proxy(Class<A> intrface, final Object target) {
    if (target == null)
      return null;
    if (isInstance(intrface, target))
      return (A) target;
    return (A) java.lang.reflect.Proxy.newProxyInstance(intrface.getClassLoader(), new Class[] { intrface }, new proxy_InvocationHandler(target));
  }

  static public <A> A proxy(Object target, Class<A> intrface) {
    return proxy(intrface, target);
  }

  static public String loadTextFilePossiblyGZipped(String fileName) {
    return loadTextFilePossiblyGZipped(fileName, null);
  }

  static public String loadTextFilePossiblyGZipped(String fileName, String defaultContents) {
    File gz = new File(fileName + ".gz");
    return gz.exists() ? loadGZTextFile(gz) : loadTextFile(fileName, defaultContents);
  }

  static public String loadTextFilePossiblyGZipped(File fileName) {
    return loadTextFilePossiblyGZipped(fileName, null);
  }

  static public String loadTextFilePossiblyGZipped(File fileName, String defaultContents) {
    return loadTextFilePossiblyGZipped(fileName.getPath(), defaultContents);
  }

  static public File getCachedTranspilationFile(String id) {
    return newFile(getCodeProgramDir(id), "Transpilation");
  }

  static public Object vmGeneralMap_get(Object key) {
    return vm_generalMap_get(key);
  }

  static public String loadProgramTextFile(String name) {
    return loadTextFile(getProgramFile(name));
  }

  static public String loadProgramTextFile(String progID, String name) {
    return loadTextFile(getProgramFile(progID, name));
  }

  static public String loadProgramTextFile(String progID, String name, String defaultText) {
    return loadTextFile(getProgramFile(progID, name), defaultText);
  }

  static public boolean isLocalSnippetID(String snippetID) {
    return isSnippetID(snippetID) && isLocalSnippetID(psI(snippetID));
  }

  static public boolean isLocalSnippetID(long snippetID) {
    return snippetID >= 1000 && snippetID <= 9999;
  }

  public static String bytesToHex(byte[] bytes) {
    return bytesToHex(bytes, 0, bytes.length);
  }

  public static String bytesToHex(byte[] bytes, int ofs, int len) {
    StringBuilder stringBuilder = new StringBuilder(len * 2);
    for (int i = 0; i < len; i++) {
      String s = "0" + Integer.toHexString(bytes[ofs + i]);
      stringBuilder.append(s.substring(s.length() - 2, s.length()));
    }
    return stringBuilder.toString();
  }

  static public boolean md5OfFile_verbose = false;

  static public String md5OfFile(String path) {
    return md5OfFile(newFile(path));
  }

  static public String md5OfFile(File f) {
    try {
      if (!f.exists())
        return "-";
      if (md5OfFile_verbose)
        print("Getting MD5 of " + f);
      MessageDigest md5 = MessageDigest.getInstance("MD5");
      FileInputStream in = new FileInputStream(f);
      try {
        byte[] buf = new byte[65536];
        int l;
        while (true) {
          l = in.read(buf);
          if (l <= 0)
            break;
          md5.update(buf, 0, l);
        }
        return bytesToHex(md5.digest());
      } finally {
        _close(in);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void saveTranspiledCode(String progID, String code) {
    File dir = getCodeProgramDir(progID);
    new File(dir, "Transpilation").delete();
    saveGZTextFile(new File(dir, "Transpilation.gz"), code);
  }

  static public String exceptionToStringShort(Throwable e) {
    lastException(e);
    e = getInnerException(e);
    String msg = hideCredentials(unnull(e.getMessage()));
    if (msg.indexOf("Error") < 0 && msg.indexOf("Exception") < 0)
      return baseClassName(e) + prependIfNempty(": ", msg);
    else
      return msg;
  }

  static public String fileNameEncode_safeChars = " ()[]#,!";

  static public String fileNameEncode(String s) {
    StringBuilder buf = new StringBuilder();
    int n = l(s);
    for (int i = 0; i < n; i++) {
      char c = s.charAt(i);
      if (contains(fileNameEncode_safeChars, c))
        buf.append(c);
      else
        buf.append(urlencode(str(c)));
    }
    return str(buf);
  }

  static public Map<String, String> mechMap(String listName) {
    return mechMapCI(listName);
  }

  static public Set<String> hotwire_classesToShare = synchroSet();

  static public Set<String> hotwire_classesToShare() {
    return hotwire_classesToShare;
  }

  static public ClassLoader myClassLoader() {
    return _getClass(mc()).getClassLoader();
  }

  static public boolean transpileRaw_silent = true;

  static public boolean transpileRaw_useDiskCache = false;

  static public Class transpileRaw_trans;

  static public boolean transpileRaw_mine = true;

  static public boolean transpileRaw_verySilent = false;

  static public boolean transpileRaw_dontCopyFromCreator = false;

  static public Lock transpileRaw_lock = lock();

  static public ThreadLocal<Boolean> transpileRaw_asInclude = new ThreadLocal();

  static public String transpileRaw(String mainJava) {
    return transpileRaw(mainJava, false, transpileRaw_useDiskCache);
  }

  static public String transpileRaw(String mainJava, boolean fragment) {
    return transpileRaw(mainJava, fragment, transpileRaw_useDiskCache);
  }

  static public String transpileRaw(String mainJava, boolean fragment, boolean useDiskCache) {
    mainJava = dropTranslators(mainJava);
    if (!transpileRaw_dontCopyFromCreator)
      transpileRaw_copyFromCreator();
    Lock __0 = transpileRaw_lock;
    lock(__0);
    try {
      File cacheFile = null;
      if (useDiskCache) {
        cacheFile = new File(javaxCodeDir(), "Transpilations/" + uniqueFileNameUsingMD5_80_v2(mainJava) + ".java");
        {
          String __3 = loadTextFile(cacheFile);
          if (!empty(__3))
            return __3;
        }
      }
      AutoCloseable __4 = transpileRaw_verySilent ? null : tempLoadingAnim("Transpiling...");
      try {
        transpileRaw_translator();
        setOpt(transpileRaw_trans, "localStuffOnly", fragment);
        setOpt(transpileRaw_trans, "asInclude", isTrue(transpileRaw_asInclude.get()));
        set(transpileRaw_trans, "mainJava", mainJava);
        set(transpileRaw_trans, "print_byThread", print_byThread);
        if (!transpileRaw_verySilent)
          print("Running translator " + getOpt(transpileRaw_trans, "programID"));
        callMain(transpileRaw_trans);
        String main = (String) (get(transpileRaw_trans, "mainJava"));
        if (useDiskCache) {
          saveTextFile(new File(cacheFile.getPath() + "x"), mainJava);
          saveTextFile(cacheFile, main);
        }
        return main;
      } finally {
        _close(__4);
      }
    } finally {
      unlock(__0);
    }
  }

  static public Class transpileRaw_translator() {
    if (transpileRaw_trans == null) {
      transpileRaw_trans = hotwireSharingLibraries_silently(defaultJavaXTranslatorID());
      transpileRaw_mine = true;
      makeDependent(transpileRaw_trans);
    }
    setOpt(transpileRaw_trans, "print_silent", transpileRaw_silent);
    return transpileRaw_trans;
  }

  static public void transpileRaw_copyFromCreator() {
    Lock __1 = transpileRaw_lock;
    lock(__1);
    try {
      if (transpileRaw_trans != null)
        return;
      Object c = creator();
      if (c == null)
        return;
      Class trans = (Class) (getOpt(c, "transpileRaw_trans"));
      Lock lock = (Lock) (getOpt(c, "transpileRaw_lock"));
      if (trans != null && lock != null) {
        print("Using creator's transpiler: " + getProgramID(c) + " => " + programID());
        transpileRaw_lock = lock;
        transpileRaw_trans = trans;
        transpileRaw_mine = false;
      }
    } finally {
      unlock(__1);
    }
  }

  static public void cleanMeUp_transpileRaw() {
    if (transpileRaw_mine)
      cleanUp(transpileRaw_trans);
    transpileRaw_trans = null;
  }

  static public <A> A printWithIndent(A o) {
    return printIndent(o);
  }

  static public <A> A printWithIndent(String indent, A o) {
    return printIndent(indent, o);
  }

  static public void printWithIndent(int indent, Object o) {
    printIndent(indent, o);
  }

  static public List<CriticalAction> beginCriticalAction_inFlight = synchroList();

  static public class CriticalAction {

    public String description;

    public CriticalAction() {
    }

    public CriticalAction(String description) {
      this.description = description;
    }

    public void done() {
      beginCriticalAction_inFlight.remove(this);
    }
  }

  static public CriticalAction beginCriticalAction(String description) {
    ping();
    CriticalAction c = new CriticalAction(description);
    beginCriticalAction_inFlight.add(c);
    return c;
  }

  static public void cleanMeUp_beginCriticalAction() {
    int n = 0;
    while (nempty(beginCriticalAction_inFlight)) {
      int m = l(beginCriticalAction_inFlight);
      if (m != n) {
        n = m;
        try {
          print("Waiting for " + n2(n, "critical actions") + ": " + join(", ", collect(beginCriticalAction_inFlight, "description")));
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
      sleepInCleanUp(10);
    }
  }

  public static File mkdirsForFile(File file) {
    File dir = file.getParentFile();
    if (dir != null) {
      dir.mkdirs();
      if (!dir.isDirectory())
        if (dir.isFile())
          throw fail("Please delete the file " + f2s(dir) + " - it is supposed to be a directory!");
        else
          throw fail("Unknown IO exception during mkdirs of " + f2s(file));
    }
    return file;
  }

  public static String mkdirsForFile(String path) {
    mkdirsForFile(new File(path));
    return path;
  }

  static public File copyFile(File src, File dest) {
    try {
      FileInputStream inputStream = new FileInputStream(src.getPath());
      FileOutputStream outputStream = newFileOutputStream(dest.getPath());
      try {
        copyStream(inputStream, outputStream);
        inputStream.close();
      } finally {
        outputStream.close();
      }
      return dest;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public FileOutputStream newFileOutputStream(File path) throws IOException {
    return newFileOutputStream(path.getPath());
  }

  static public FileOutputStream newFileOutputStream(String path) throws IOException {
    return newFileOutputStream(path, false);
  }

  static public FileOutputStream newFileOutputStream(File path, boolean append) throws IOException {
    return newFileOutputStream(path.getPath(), append);
  }

  static public FileOutputStream newFileOutputStream(String path, boolean append) throws IOException {
    mkdirsForFile(path);
    FileOutputStream f = new FileOutputStream(path, append);
    _registerIO(f, path, true);
    return f;
  }

  static public int findEndOfBracketPart2(List<String> cnc, int i) {
    int j = i + 2, level = 1;
    while (j < cnc.size()) {
      if (eqOneOf(cnc.get(j), "{", "(", "["))
        ++level;
      else if (eqOneOf(cnc.get(j), "}", ")", "]"))
        --level;
      if (level == 0)
        return j + 1;
      ++j;
    }
    return cnc.size();
  }

  static public String regexReplace(String s, String pat, Object f) {
    Matcher m = Pattern.compile(pat).matcher(s);
    return regexReplace(m, f);
  }

  static public String regexReplace(Matcher m, Object f) {
    StringBuffer buf = new StringBuffer();
    while (m.find()) m.appendReplacement(buf, m.quoteReplacement(str(callF(f, m))));
    m.appendTail(buf);
    return str(buf);
  }

  static public String regexReplace(String s, String pat, IF1<Matcher, String> f) {
    return regexReplace(s, pat, (Object) f);
  }

  static public Matcher regexpMatcherIC(String pat, String s) {
    return compileRegexpIC(pat).matcher(unnull(s));
  }

  static public void _registerIO(Object object, String path, boolean opened) {
  }

  static public boolean possibleMD5(String s) {
    return isMD5(s);
  }

  static public Object iteratorFromFunction_endMarker = new Object();

  static public <A> IterableIterator<A> iteratorFromFunction_withEndMarker(final Object f) {
    class IFF extends IterableIterator<A> {

      public A a;

      public boolean have, done;

      public boolean hasNext() {
        getNext();
        return !done;
      }

      public A next() {
        getNext();
        if (done)
          throw fail();
        A _a = a;
        a = null;
        have = false;
        return _a;
      }

      public void getNext() {
        if (done || have)
          return;
        Object o = callF(f);
        if (o == iteratorFromFunction_endMarker) {
          done = true;
          return;
        }
        a = (A) o;
        have = true;
      }
    }
    ;
    return new IFF();
  }

  static public <A> IterableIterator<A> iteratorFromFunction_withEndMarker(final F0 f) {
    return iteratorFromFunction_withEndMarker_f0(f);
  }

  static public File loadImageAsFile(String snippetIDOrURL) {
    try {
      if (isURL(snippetIDOrURL))
        throw fail("not implemented");
      if (!isSnippetID(snippetIDOrURL))
        throw fail("Not a URL or snippet ID: " + snippetIDOrURL);
      String snippetID = "" + parseSnippetID(snippetIDOrURL);
      File file = imageSnippetCacheFile(snippetID);
      if (fileSize(file) > 0)
        return file;
      String imageURL = snippetImageURL_noHttps(snippetID);
      System.err.println("Loading image: " + imageURL);
      byte[] data = loadBinaryPage(imageURL);
      saveBinaryFile(file, data);
      return file;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public File DiskSnippetCache_file(long snippetID) {
    return new File(getGlobalCache(), "data_" + snippetID + ".jar");
  }

  public static File DiskSnippetCache_getLibrary(long snippetID) throws IOException {
    File file = DiskSnippetCache_file(snippetID);
    return file.exists() ? file : null;
  }

  public static void DiskSnippetCache_putLibrary(long snippetID, byte[] data) throws IOException {
    saveBinaryFile(DiskSnippetCache_file(snippetID), data);
  }

  static public byte[] loadDataSnippetImpl(String snippetID) throws IOException {
    byte[] data;
    try {
      URL url = new URL(dataSnippetLink(snippetID));
      print("Loading library: " + hideCredentials(url));
      try {
        data = loadBinaryPage(url.openConnection());
      } catch (RuntimeException e) {
        data = null;
      }
      if (data == null || data.length == 0) {
        url = new URL(tb_mainServer() + "/blobs/" + parseSnippetID(snippetID));
        print("Loading library: " + hideCredentials(url));
        data = loadBinaryPage(url.openConnection());
      }
      print("Bytes loaded: " + data.length);
    } catch (FileNotFoundException e) {
      throw new IOException("Binary snippet #" + snippetID + " not found or not public");
    }
    return data;
  }

  static public long fileSize(String path) {
    return getFileSize(path);
  }

  static public long fileSize(File f) {
    return getFileSize(f);
  }

  static public File loadDataSnippetToFile(String snippetID) {
    try {
      IResourceLoader rl = vm_getResourceLoader();
      if (rl != null)
        return rl.loadLibrary(snippetID);
      return loadDataSnippetToFile_noResourceLoader(snippetID);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public File loadDataSnippetToFile_noResourceLoader(String snippetID) {
    try {
      snippetID = fsI(snippetID);
      File f = DiskSnippetCache_file(parseSnippetID(snippetID));
      List<URL> urlsTried = new ArrayList();
      List<Throwable> errors = new ArrayList();
      try {
        URL url = addAndReturn(urlsTried, new URL(dataSnippetLink(snippetID)));
        print("Loading library: " + hideCredentials(url));
        try {
          loadBinaryPageToFile(openConnection(url), f);
          if (fileSize(f) == 0)
            throw fail();
        } catch (Throwable e) {
          errors.add(e);
          url = addAndReturn(urlsTried, new URL(tb_mainServer() + "/blobs/" + psI(snippetID)));
          print(e);
          print("Trying other server: " + hideCredentials(url));
          loadBinaryPageToFile(openConnection(url), f);
          print("Got bytes: " + fileSize(f));
        }
        if (fileSize(f) == 0)
          throw fail();
        System.err.println("Bytes loaded: " + fileSize(f));
      } catch (Throwable e) {
        errors.add(e);
        throw fail("Binary snippet " + snippetID + " not found or not public. URLs tried: " + allToString(urlsTried) + ", errors: " + allToString(errors));
      }
      return f;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String multiLineQuoteWithSpaces(String s) {
    return multiLineQuote(" " + s + " ");
  }

  static public <A> A liftLast(List<A> l) {
    if (empty(l))
      return null;
    int i = l(l) - 1;
    A a = l.get(i);
    l.remove(i);
    return a;
  }

  static public <A> List<A> liftLast(int n, List<A> l) {
    int i = l(l) - n;
    List<A> part = cloneSubList(l, i);
    removeSubList(l, i);
    return part;
  }

  static public String structure_addTokenMarkers(String s) {
    return join(structure_addTokenMarkers(javaTokForStructure(s)));
  }

  static public List<String> structure_addTokenMarkers(List<String> tok) {
    TreeSet<Integer> refs = new TreeSet();
    for (int i = 1; i < l(tok); i += 2) {
      String t = tok.get(i);
      if (t.startsWith("t") && isInteger(t.substring(1)))
        refs.add(parseInt(t.substring(1)));
    }
    if (empty(refs))
      return tok;
    for (int i : refs) {
      int idx = i * 2 + 1;
      if (idx >= l(tok))
        continue;
      String t = "";
      if (endsWithLetterOrDigit(tok.get(idx - 1)))
        t = " ";
      tok.set(idx, t + "m" + i + " " + tok.get(idx));
    }
    return tok;
  }

  static public Runnable asRunnable(Object o) {
    return toRunnable(o);
  }

  static public void _inheritThreadInfo(Object info) {
    _threadInheritInfo(info);
  }

  static public ExpiringMap2<String, String> mechList_raw_cache = new ExpiringMap2(10000).setMap(ciMap());

  static public Lock mechList_raw_lock = lock();

  static public int mechList_raw_timeout = 60000;

  static public String mechList_raw(String name) {
    try {
      Lock __0 = mechList_raw_lock;
      lock(__0);
      try {
        if (empty(name))
          return "";
        String src = mechList_raw_cache.get(name);
        if (src != null)
          return src;
        src = mechList_raw_fresh(name);
        if (src != null)
          mechList_raw_cache.put(name, src);
        return src;
      } finally {
        unlock(__0);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public VF2<String, Object> mechList_raw_listener = new VF2<String, Object>() {

    public void get(String msg, Object arg) {
      try {
        if (eq(msg, "mechChange") && arg instanceof String) {
          mechList_raw_cache.remove((String) arg);
        }
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public String toString() {
      return "if (eq(msg, 'mechChange) && arg instanceof S) {\r\n    //print(\"Got change noti...";
    }
  };

  static public void _onLoad_mechList_raw() {
    add(vm_busListeners_live(), mechList_raw_listener);
  }

  static public void cleanMeUp_mechList_raw() {
    remove(vm_busListeners_live(), mechList_raw_listener);
  }

  static public List<String> mechList_opt(String name) {
    return mechList_opt_tlft(name);
  }

  static public <A, B> HashMap<A, B> asHashMap(Map<A, B> map) {
    if (map instanceof HashMap)
      return (HashMap) map;
    HashMap<A, B> m = new HashMap(l(map));
    m.putAll(map);
    return m;
  }

  static public Object callAndMake(String functionName, Object... args) {
    return callAndMake_orDirect(functionName, args);
  }

  static public Map<String, String> parseDoubleArrowMap(Map<String, String> map, List<String> l) {
    for (String s : l) {
      List<String> x = splitAtDoubleArrow_bothDirections(s);
      if (l(x) == 2)
        map.put(first(x), second(x));
    }
    return map;
  }

  static public List similarEmptyList(Collection m) {
    return new ArrayList();
  }

  static public File programDir_mine;

  static public File programDir() {
    return programDir(getProgramID());
  }

  static public File programDir(String snippetID) {
    boolean me = sameSnippetID(snippetID, programID());
    if (programDir_mine != null && me)
      return programDir_mine;
    File dir = new File(javaxDataDir(), formatSnippetIDOpt(snippetID));
    if (me) {
      String c = caseID();
      if (nempty(c))
        dir = newFile(dir, c);
    }
    return dir;
  }

  static public File programDir(String snippetID, String subPath) {
    return new File(programDir(snippetID), subPath);
  }

  static public File oneOfTheFiles(String... paths) {
    if (paths != null)
      for (String path : paths) if (fileExists(path))
        return newFile(path);
    return null;
  }

  static public File oneOfTheFiles(File... files) {
    return oneOfTheFiles(asList(files));
  }

  static public File oneOfTheFiles(Iterable<File> files) {
    if (files != null)
      for (File f : files) if (fileExists(f))
        return f;
    return null;
  }

  static public File javaxSecretDir_dir;

  static public File javaxSecretDir() {
    return javaxSecretDir_dir != null ? javaxSecretDir_dir : new File(userHome(), "JavaX-Secret");
  }

  static public File javaxSecretDir(String sub) {
    return newFile(javaxSecretDir(), sub);
  }

  static public String loadGZTextFile(File file) {
    try {
      if (!file.isFile())
        return null;
      ping();
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      InputStream fis = new FileInputStream(file);
      try {
        GZIPInputStream gis = newGZIPInputStream(fis);
        byte[] buffer = new byte[1024];
        int len;
        while ((len = gis.read(buffer)) != -1) baos.write(buffer, 0, len);
        baos.close();
        return fromUtf8(baos.toByteArray());
      } finally {
        _close(fis);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public File getCodeProgramDir() {
    return getCodeProgramDir(getProgramID());
  }

  static public File getCodeProgramDir(String snippetID) {
    return new File(javaxCodeDir(), formatSnippetID(snippetID));
  }

  static public File getCodeProgramDir(long snippetID) {
    return getCodeProgramDir(formatSnippetID(snippetID));
  }

  static public void saveGZTextFile(File file, String contents) {
    saveGZTextFile(file, contents, "UTF-8");
  }

  static public void saveGZTextFile(File file, String contents, String encoding) {
    try {
      File parentFile = file.getParentFile();
      if (parentFile != null)
        parentFile.mkdirs();
      String tempFileName = file.getPath() + "_temp";
      File tempFile = new File(tempFileName);
      if (contents != null) {
        if (tempFile.exists())
          try {
            String saveName = tempFileName + ".saved." + now();
            copyFile(tempFile, new File(saveName));
          } catch (Throwable e) {
            printStackTrace(e);
          }
        FileOutputStream fileOutputStream = newFileOutputStream(tempFile.getPath());
        GZIPOutputStream gos = new GZIPOutputStream(fileOutputStream);
        OutputStreamWriter outputStreamWriter = new OutputStreamWriter(gos, encoding);
        PrintWriter printWriter = new PrintWriter(outputStreamWriter);
        printWriter.print(contents);
        printWriter.close();
        gos.close();
        fileOutputStream.close();
      }
      if (file.exists() && !file.delete())
        throw new IOException("Can't delete " + file.getPath());
      if (contents != null)
        if (!tempFile.renameTo(file))
          throw new IOException("Can't rename " + tempFile + " to " + file);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String baseClassName(String className) {
    return substring(className, className.lastIndexOf('.') + 1);
  }

  static public String baseClassName(Object o) {
    return baseClassName(getClassName(o));
  }

  static public String prependIfNempty(String prefix, String s) {
    return empty(s) ? unnull(s) : prefix + s;
  }

  static public Map<String, Pair<String, Map<String, String>>> mechMapCI_cache = synchroMap();

  static public Map<String, String> mechMapCI(String listName) {
    Pair<String, Map<String, String>> p = mechMapCI_cache.get(listName);
    String text = mechList_raw(listName);
    if (p != null && eq(p.a, text))
      return p.b;
    String parsing = first(mechList_opt(listName + " | Parsing"));
    Map<String, String> map;
    if (parsing == null)
      map = parseDoubleArrowMapCI(tlft(text));
    else
      map = asCIMap((Map<String, String>) callMC(parsing, text));
    p = pair(text, map);
    mechMapCI_cache.put(listName, p);
    return p.b;
  }

  static public String dropTranslators(String src) {
    return findTranslators2(src, null);
  }

  static public List<String> dropTranslators(List<String> tok) {
    return findTranslators2(tok, null);
  }

  static public File javaxCodeDir_dir;

  static public File javaxCodeDir() {
    return javaxCodeDir_dir != null ? javaxCodeDir_dir : new File(userHome(), "JavaX-Code");
  }

  static public File javaxCodeDir(String sub) {
    return newFile(javaxCodeDir(), sub);
  }

  static public <A> AutoCloseable tempLoadingAnim(String msg) {
    return tempDisposeWindow(loadingAnim(msg));
  }

  static public <A> A set(A o, String field, Object value) {
    if (o == null)
      return null;
    if (o instanceof Class)
      set((Class) o, field, value);
    else
      try {
        Field f = set_findField(o.getClass(), field);
        makeAccessible(f);
        smartSet(f, o, value);
      } catch (Exception e) {
        throw new RuntimeException(e);
      }
    return o;
  }

  static public void set(Class c, String field, Object value) {
    if (c == null)
      return;
    try {
      Field f = set_findStaticField(c, field);
      makeAccessible(f);
      smartSet(f, null, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  static public Field set_findStaticField(Class<?> c, String field) {
    Class _c = c;
    do {
      for (Field f : _c.getDeclaredFields()) if (f.getName().equals(field) && (f.getModifiers() & java.lang.reflect.Modifier.STATIC) != 0)
        return f;
      _c = _c.getSuperclass();
    } while (_c != null);
    throw new RuntimeException("Static field '" + field + "' not found in " + c.getName());
  }

  static public Field set_findField(Class<?> c, String field) {
    Class _c = c;
    do {
      for (Field f : _c.getDeclaredFields()) if (f.getName().equals(field))
        return f;
      _c = _c.getSuperclass();
    } while (_c != null);
    throw new RuntimeException("Field '" + field + "' not found in " + c.getName());
  }

  static public Class<?> hotwireSharingLibraries_silently(String progID) {
    AutoCloseable __1 = temp_loadPage_silent();
    try {
      return hotwireSharingLibraries(progID);
    } finally {
      _close(__1);
    }
  }

  static public String defaultJavaXTranslatorID_value = "#759";

  static public String defaultJavaXTranslatorID() {
    return defaultJavaXTranslatorID_value;
  }

  static public Object makeDependent_postProcess;

  static public void makeDependent(Object c) {
    if (c == null)
      return;
    assertTrue("Not a class", c instanceof Class);
    dependentClasses();
    hotwire_classes.add(new WeakReference(c));
    Object local_log = getOpt(mc(), "local_log");
    if (local_log != null)
      setOpt(c, "local_log", local_log);
    Object print_byThread = getOpt(mc(), "print_byThread");
    if (print_byThread != null)
      setOpt(c, "print_byThread", print_byThread);
    callF(makeDependent_postProcess, c);
  }

  static public WeakReference<Object> creator_class;

  static public Object creator() {
    return creator_class == null ? null : creator_class.get();
  }

  static public boolean cleanUp_interruptThreads = false;

  static public void cleanUp(Object c) {
    if (c == null)
      return;
    if (c instanceof AutoCloseable) {
      close_pcall(((AutoCloseable) c));
      return;
    }
    if (c instanceof java.util.Timer) {
      ((java.util.Timer) c).cancel();
      return;
    }
    if (c instanceof Collection) {
      cleanUp((Collection) c);
      return;
    }
    if (c instanceof Map) {
      for (Object o : keys((Map) c)) cleanUp(o);
      for (Object o : values((Map) c)) cleanUp(o);
      ((Map) c).clear();
      return;
    }
    try {
      preCleanUp(c);
      setOpt(c, "ping_pauseAll", false);
      innerCleanUp(c);
      List androids = (List) getOpt(c, "record_list");
      for (Object android : unnull(androids)) pcallOpt(android, "dispose");
      List<WeakReference> classes = (List<WeakReference>) (getOpt(c, "hotwire_classes"));
      if (classes != null)
        for (WeakReference cc : classes) {
          try {
            cleanUp(cc.get());
          } catch (Throwable __e) {
            _handleException(__e);
          }
        }
      if (cleanUp_interruptThreads) {
        List<Thread> threads = registeredThreads(c);
        if (nempty(threads)) {
          print("cleanUp: Interrupting " + n2(threads, "thread") + ": " + joinWithComma(allToString(threads)));
          interruptThreads(threads);
        }
      }
    } catch (Throwable __e) {
      _handleException(__e);
    }
    setOpt(c, "cleaningUp_flag", false);
    if (c instanceof Class && ((Class) c).getName().equals("main"))
      retireClassLoader(((Class) c).getClassLoader());
  }

  static public void cleanUp(Collection l) {
    if (l == null)
      return;
    for (Object c : l) cleanUp(c);
    l.clear();
  }

  static public <A> A printIndent(A o) {
    print(indentx(str(o)));
    return o;
  }

  static public <A> A printIndent(String indent, A o) {
    print(indentx(indent, str(o)));
    return o;
  }

  static public void printIndent(int indent, Object o) {
    print(indentx(indent, str(o)));
  }

  static public void sleepInCleanUp(long ms) {
    try {
      if (ms < 0)
        return;
      Thread.sleep(ms);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String f2s(File f) {
    return f == null ? null : f.getAbsolutePath();
  }

  static public String f2s(String s) {
    return f2s(newFile(s));
  }

  static public String f2s(java.nio.file.Path p) {
    return p == null ? null : f2s(p.toFile());
  }

  static public void copyStream(InputStream in, OutputStream out) {
    try {
      byte[] buf = new byte[65536];
      while (true) {
        int n = in.read(buf);
        if (n <= 0)
          return;
        out.write(buf, 0, n);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean loadBufferedImage_useImageCache = true;

  static public BufferedImage loadBufferedImage(String snippetIDOrURLOrFile) {
    try {
      ping();
      if (snippetIDOrURLOrFile == null)
        return null;
      if (isURL(snippetIDOrURLOrFile))
        return imageIO_readURL(snippetIDOrURLOrFile);
      if (isAbsolutePath(snippetIDOrURLOrFile))
        return loadBufferedImage(new File(snippetIDOrURLOrFile));
      if (!isSnippetID(snippetIDOrURLOrFile))
        throw fail("Not a URL or snippet ID or file: " + snippetIDOrURLOrFile);
      String snippetID = "" + parseSnippetID(snippetIDOrURLOrFile);
      IResourceLoader rl = vm_getResourceLoader();
      if (rl != null)
        return loadBufferedImage(rl.loadLibrary(snippetID));
      File dir = imageSnippetsCacheDir();
      if (loadBufferedImage_useImageCache) {
        dir.mkdirs();
        File file = new File(dir, snippetID + ".png");
        if (file.exists() && file.length() != 0)
          try {
            return ImageIO.read(file);
          } catch (Throwable e) {
            e.printStackTrace();
          }
      }
      String imageURL = snippetImageURL_http(snippetID);
      print("Loading image: " + imageURL);
      BufferedImage image = imageIO_readURL(imageURL);
      if (loadBufferedImage_useImageCache) {
        File tempFile = new File(dir, snippetID + ".tmp." + System.currentTimeMillis());
        ImageIO.write(image, "png", tempFile);
        tempFile.renameTo(new File(dir, snippetID + ".png"));
      }
      return image;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public BufferedImage loadBufferedImage(File file) {
    try {
      return file.isFile() ? ImageIO.read(file) : null;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Map<String, String> parseDoubleLeftArrowMapCI_tlft(String s) {
    return parseDoubleLeftArrowMapCI(tlft(s));
  }

  static public <A> IterableIterator<A> iteratorFromFunction_withEndMarker_f0(final F0<A> f) {
    class IFF2 extends IterableIterator<A> {

      public A a;

      public boolean have, done;

      public boolean hasNext() {
        getNext();
        return !done;
      }

      public A next() {
        getNext();
        if (done)
          throw fail();
        A _a = a;
        a = null;
        have = false;
        return _a;
      }

      public void getNext() {
        if (done || have)
          return;
        Object o = f.get();
        if (o == iteratorFromFunction_endMarker) {
          done = true;
          return;
        }
        a = (A) o;
        have = true;
      }
    }
    ;
    return new IFF2();
  }

  static public File imageSnippetCacheFile(String snippetID) {
    File dir = imageSnippetsCacheDir();
    if (!loadBufferedImage_useImageCache)
      return null;
    return new File(dir, parseSnippetID(snippetID) + ".png");
  }

  static public String snippetImageURL_noHttps(String snippetID) {
    return snippetImageURL_noHttps(snippetID, "png");
  }

  static public String snippetImageURL_noHttps(String snippetID, String contentType) {
    return snippetImageURL(snippetID, contentType).replace("https://www.botcompany.de:8443/", "http://www.botcompany.de:8080/").replace("https://botcompany.de/", "http://botcompany.de/");
  }

  static public ThreadLocal<Map<String, List<String>>> loadBinaryPage_responseHeaders = new ThreadLocal();

  static public ThreadLocal<Map<String, String>> loadBinaryPage_extraHeaders = new ThreadLocal();

  static public byte[] loadBinaryPage(String url) {
    try {
      print("Loading " + url);
      return loadBinaryPage(loadPage_openConnection(new URL(url)));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public byte[] loadBinaryPage(URLConnection con) {
    try {
      Map<String, String> extraHeaders = getAndClearThreadLocal(loadBinaryPage_extraHeaders);
      setHeaders(con);
      for (String key : keys(extraHeaders)) con.setRequestProperty(key, extraHeaders.get(key));
      return loadBinaryPage_noHeaders(con);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public byte[] loadBinaryPage_noHeaders(URLConnection con) {
    try {
      ByteArrayOutputStream buf = new ByteArrayOutputStream();
      InputStream inputStream = con.getInputStream();
      loadBinaryPage_responseHeaders.set(con.getHeaderFields());
      long len = 0;
      try {
        len = con.getContentLength();
      } catch (Throwable e) {
        printStackTrace(e);
      }
      int n = 0;
      while (true) {
        int ch = inputStream.read();
        if (ch < 0)
          break;
        buf.write(ch);
        if (++n % 100000 == 0)
          println("  " + n + (len != 0 ? "/" + len : "") + " bytes loaded.");
      }
      inputStream.close();
      return buf.toByteArray();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  public static byte[] saveBinaryFile(String fileName, byte[] contents) {
    try {
      File file = new File(fileName);
      File parentFile = file.getParentFile();
      if (parentFile != null)
        parentFile.mkdirs();
      String tempFileName = fileName + "_temp";
      FileOutputStream fileOutputStream = newFileOutputStream(tempFileName);
      fileOutputStream.write(contents);
      fileOutputStream.close();
      if (file.exists() && !file.delete())
        throw new IOException("Can't delete " + fileName);
      if (!new File(tempFileName).renameTo(file))
        throw new IOException("Can't rename " + tempFileName + " to " + fileName);
      vmBus_send("wroteFile", file);
      return contents;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public byte[] saveBinaryFile(File fileName, byte[] contents) {
    return saveBinaryFile(fileName.getPath(), contents);
  }

  static public File getGlobalCache() {
    File file = new File(javaxCachesDir(), "Binary Snippets");
    file.mkdirs();
    return file;
  }

  static public String dataSnippetLink(String snippetID) {
    long id = parseSnippetID(snippetID);
    if (id >= 1100000 && id < 1200000)
      return imageServerURL() + id;
    if (id >= 1200000 && id < 1300000) {
      String pw = muricaPassword();
      if (empty(pw))
        throw fail("Please set 'murica password by running #1008829");
      return "https://botcompany.de/files/" + id + "?_pass=" + pw;
    }
    return fileServerURL() + "/" + id;
  }

  static public <B, A extends B> A addAndReturn(Collection<B> c, A a) {
    if (c != null)
      c.add(a);
    return a;
  }

  static public void loadBinaryPageToFile(String url, File file) {
    try {
      print("Loading " + url);
      loadBinaryPageToFile(openConnection(new URL(url)), file);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void loadBinaryPageToFile(URLConnection con, File file) {
    try {
      setHeaders(con);
      loadBinaryPageToFile_noHeaders(con, file);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void loadBinaryPageToFile_noHeaders(URLConnection con, File file) {
    try {
      File ftemp = new File(f2s(file) + "_temp");
      FileOutputStream buf = newFileOutputStream(mkdirsFor(ftemp));
      try {
        InputStream inputStream = con.getInputStream();
        long len = 0;
        try {
          len = con.getContentLength();
        } catch (Throwable e) {
          printStackTrace(e);
        }
        String pat = "  {*}" + (len != 0 ? "/" + len : "") + " bytes loaded.";
        copyStreamWithPrints(inputStream, buf, pat);
        inputStream.close();
        buf.close();
        file.delete();
        renameFile_assertTrue(ftemp, file);
      } finally {
        if (buf != null)
          buf.close();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public URLConnection openConnection(String url) {
    try {
      return openConnection(new URL(url));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public URLConnection openConnection(URL url) {
    try {
      ping();
      callOpt(javax(), "recordOpenURLConnection", str(url));
      return url.openConnection();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String multiLineQuote(String s) {
    for (int i = 0; ; i++) {
      String closer = "]" + rep('=', i) + "]";
      if (!contains(s, closer))
        return "[" + rep('=', i) + "[" + s + closer;
    }
  }

  static public String mechList_raw_fresh(String name) {
    return mechList_opt_raw_fresh(name);
  }

  static public void add(BitSet bs, int i) {
    bs.set(i);
  }

  static public <A> boolean add(Collection<A> c, A a) {
    return c != null && c.add(a);
  }

  static public void add(Container c, Component x) {
    addToContainer(c, x);
  }

  static public <A> void remove(List<A> l, int i) {
    if (l != null && i >= 0 && i < l(l))
      l.remove(i);
  }

  static public <A> void remove(Collection<A> l, A a) {
    if (l != null)
      l.remove(a);
  }

  static public List<String> mechList_opt_tlft(String name) {
    return mechList_opt_tlft_cached(name);
  }

  static public Object callAndMake_orDirect(String functionName, List args) {
    return callAndMake_orDirect(functionName, toObjectArray(args));
  }

  static public Object callAndMake_orDirect(String functionName, Object... args) {
    if (functionName == null)
      return null;
    if (hasMethod(mc(), functionName, args))
      return callMC(functionName, args);
    else
      return makeAndCall_cached(functionName, args);
  }

  static public List<String> splitAtDoubleArrow_bothDirections(String s) {
    return splitAtDoubleArrow_bothDirections(javaTok(s));
  }

  static public List<String> splitAtDoubleArrow_bothDirections(List<String> tok) {
    List<String> l = splitAtDoubleArrow(tok);
    if (l(l) != 2)
      l = reversedList(splitAtDoubleLeftArrow(tok));
    return l;
  }

  static public boolean sameSnippetID(String a, String b) {
    if (!isSnippetID(a) || !isSnippetID(b))
      return false;
    return parseSnippetID(a) == parseSnippetID(b);
  }

  static public boolean fileExists(String path) {
    return path != null && new File(path).exists();
  }

  static public boolean fileExists(File f) {
    return f != null && f.exists();
  }

  static public String fromUtf8(byte[] bytes) {
    try {
      return bytes == null ? null : new String(bytes, utf8charset());
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Map<String, String> parseDoubleArrowMapCI(List<String> l) {
    return parseDoubleArrowMap((Map) ciMap(), l);
  }

  static public Map<String, String> parseDoubleArrowMapCI(String s) {
    return parseDoubleArrowMapCI_tlft(s);
  }

  static public <B> TreeMap<String, B> asCIMap(Map<String, B> map) {
    return asCaseInsensitiveMap(map);
  }

  static public <A> AutoCloseable tempDisposeWindow(final Window w) {
    return new AutoCloseable() {

      public void close() {
        disposeWindow(w);
      }
    };
  }

  static public JWindow loadingAnim() {
    return showLoadingAnimation();
  }

  static public JWindow loadingAnim(String text) {
    return showLoadingAnimation(text);
  }

  static public void smartSet(Field f, Object o, Object value) throws Exception {
    try {
      f.set(o, value);
    } catch (Exception e) {
      Class type = f.getType();
      if (type == int.class && value instanceof Long)
        value = ((Long) value).intValue();
      if (type == LinkedHashMap.class && value instanceof Map) {
        f.set(o, asLinkedHashMap((Map) value));
        return;
      }
      try {
        if (f.getType() == Concept.Ref.class) {
          f.set(o, ((Concept) o).new Ref((Concept) value));
          return;
        }
        if (o instanceof Concept.Ref) {
          f.set(o, ((Concept.Ref) o).get());
          return;
        }
      } catch (Throwable _e) {
      }
      throw e;
    }
  }

  static public AutoCloseable temp_loadPage_silent() {
    return tempSetThreadLocal(loadPage_silent, true);
  }

  static public Class<?> hotwireSharingLibraries(String progID) {
    try {
      Pair<File, String> p = CompilerBot.compileSnippet2(progID);
      File jar = p.a;
      assertTrue(f2s(jar), jar.isFile());
      List<File> files = ll(jar);
      String dehlibs = unnull(loadTextFileFromZip(jar, "libraries"));
      List<File> myLibraries = myLibraryFiles();
      Matcher matcher = Pattern.compile("\\d+").matcher(dehlibs);
      while (matcher.find()) {
        String libID = matcher.group();
        File lib = loadLibrary(libID);
        if (myLibraries.contains(lib)) {
        } else {
          files.add(lib);
        }
      }
      JavaXClassLoaderWithParent classLoader = new JavaXClassLoaderWithParent(progID, files, myClassLoader());
      return hotwire_finish(classLoader, progID, p.b);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public List<Class> dependentClasses() {
    return cleanUpAndGetWeakReferencesList(hotwire_classes);
  }

  static public void close_pcall(AutoCloseable c) {
    if (c != null) {
      try {
        c.close();
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public void preCleanUp(Object c) {
    if (c instanceof Collection) {
      for (Object o : ((Collection) c)) preCleanUp(o);
      return;
    }
    callOpt(c, "licensed_off");
    setOpt(c, "ping_anyActions", true);
    setOpt(c, "cleaningUp_flag", true);
  }

  static public void innerCleanUp(Object c) {
    if (!isFalse(pcallOpt(c, "cleanMeUp")))
      for (String name : sorted(methodsStartingWith(c, "cleanMeUp_"))) try {
        callOpt(c, name);
      } catch (Throwable e) {
        print("Error cleaning up: " + programID(c));
        _handleException(e);
      }
  }

  static public void innerCleanUp() {
    innerCleanUp(mc());
  }

  static public Object pcallOpt(Object o, String method, Object... args) {
    try {
      return callOpt(o, method, args);
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return null;
  }

  static public List<Thread> registeredThreads(Object o) {
    Map<Thread, Boolean> map = (Map<Thread, Boolean>) (getOpt(o, "_registerThread_threads"));
    if (map == null)
      return ll();
    map.size();
    synchronized (map) {
      return asList(keys(map));
    }
  }

  static public List<Thread> registeredThreads() {
    _registerThread_threads.size();
    return asList(keys(_registerThread_threads));
  }

  static public void interruptThreads(Collection<Thread> threads) {
    for (Thread t : unnull(threads)) interruptThread(t);
  }

  static public void interruptThreads(Class mainClass) {
    interruptThreads(registeredThreads(mainClass));
  }

  static public void retireClassLoader(ClassLoader cl) {
    if (isJavaXClassLoader(cl))
      setOptAll(cl, "retired", true, "retiredMarker", new DefunctClassLoader());
  }

  static public String indentx(String s) {
    return indentx(indent_default, s);
  }

  static public String indentx(int n, String s) {
    return dropSuffix(repeat(' ', n), indent(n, s));
  }

  static public String indentx(String indent, String s) {
    return dropSuffix(indent, indent(indent, s));
  }

  static public List<WeakReference<Class>> hotwire_classes = synchroList();

  static public Class<?> hotwireDependent(String src) {
    Class c = hotwire(src);
    makeDependent(c);
    return c;
  }

  static public BufferedImage imageIO_readURL(String url) {
    try {
      return ImageIO.read(new URL(url));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isAbsolutePath(String s) {
    return s != null && new File(s).isAbsolute();
  }

  static public boolean isAbsolutePath(File f) {
    return f != null && f.isAbsolute();
  }

  static public File imageSnippetsCacheDir() {
    return javaxCachesDir("Image-Snippets");
  }

  static public String snippetImageURL_http(String snippetID) {
    return snippetImageURL_http(snippetID, "png");
  }

  static public String snippetImageURL_http(String snippetID, String contentType) {
    return replacePrefix("https://", "http://", snippetImageURL(snippetID, contentType)).replace(":8443", ":8080");
  }

  static public Map<String, String> parseDoubleLeftArrowMapCI(List<String> l) {
    return parseDoubleLeftArrowMap((Map) ciMap(), l);
  }

  static public int loadPage_defaultTimeout = 60000;

  static public ThreadLocal<String> loadPage_charset = new ThreadLocal();

  static public boolean loadPage_allowGzip = true, loadPage_debug;

  static public boolean loadPage_anonymous = false;

  static public int loadPage_verboseness = 100000;

  static public int loadPage_retries = 1;

  static public ThreadLocal<Boolean> loadPage_silent = new ThreadLocal();

  static volatile public int loadPage_forcedTimeout;

  static public ThreadLocal<Integer> loadPage_forcedTimeout_byThread = new ThreadLocal();

  static public ThreadLocal<Map<String, List<String>>> loadPage_responseHeaders = new ThreadLocal();

  static public ThreadLocal<Map<String, String>> loadPage_extraHeaders = new ThreadLocal();

  static public ThreadLocal<Long> loadPage_sizeLimit = new ThreadLocal();

  public static String loadPageSilently(String url) {
    try {
      return loadPageSilently(new URL(loadPage_preprocess(url)));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  public static String loadPageSilently(URL url) {
    try {
      if (!networkAllowanceTest(str(url)))
        throw fail("Not allowed: " + url);
      IOException e = null;
      for (int tries = 0; tries < loadPage_retries; tries++) try {
        URLConnection con = loadPage_openConnection(url);
        return loadPage(con, url);
      } catch (IOException _e) {
        e = _e;
        if (loadPageThroughProxy_enabled) {
          print("Trying proxy because of: " + e);
          try {
            return loadPageThroughProxy(str(url));
          } catch (Throwable e2) {
            print("  " + exceptionToStringShort(e2));
          }
        } else if (loadPage_debug)
          print(exceptionToStringShort(e));
        if (tries < loadPage_retries - 1)
          sleepSeconds(1);
      }
      throw e;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String loadPage_preprocess(String url) {
    if (url.startsWith("tb/"))
      url = tb_mainServer() + "/" + url;
    if (url.indexOf("://") < 0)
      url = "http://" + url;
    return url;
  }

  static public String loadPage(String url) {
    try {
      url = loadPage_preprocess(url);
      if (!isTrue(loadPage_silent.get()))
        printWithTime("Loading: " + hideCredentials(url));
      return loadPageSilently(new URL(url));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String loadPage(URL url) {
    return loadPage(url.toExternalForm());
  }

  static public String loadPage(URLConnection con, URL url) throws IOException {
    return loadPage(con, url, true);
  }

  static public String loadPage(URLConnection con, URL url, boolean addHeaders) throws IOException {
    Map<String, String> extraHeaders = getAndClearThreadLocal(loadPage_extraHeaders);
    Long limit = optPar(loadPage_sizeLimit);
    if (addHeaders)
      try {
        if (!loadPage_anonymous)
          setHeaders(con);
        if (loadPage_allowGzip)
          con.setRequestProperty("Accept-Encoding", "gzip");
        con.setRequestProperty("X-No-Cookies", "1");
        for (String key : keys(extraHeaders)) con.setRequestProperty(key, extraHeaders.get(key));
      } catch (Throwable e) {
      }
    vm_generalSubMap("URLConnection per thread").put(currentThread(), con);
    loadPage_responseHeaders.set(con.getHeaderFields());
    InputStream in = null;
    try {
      in = urlConnection_getInputStream(con);
      if (loadPage_debug)
        print("Put stream in map: " + currentThread());
      String contentType = con.getContentType();
      if (contentType == null) {
        throw new IOException("Page could not be read: " + hideCredentials(url));
      }
      String charset = loadPage_charset == null ? null : loadPage_charset.get();
      if (charset == null)
        charset = loadPage_guessCharset(contentType);
      if ("gzip".equals(con.getContentEncoding())) {
        if (loadPage_debug)
          print("loadPage: Using gzip.");
        in = newGZIPInputStream(in);
      }
      Reader r;
      try {
        r = new InputStreamReader(in, unquote(charset));
      } catch (UnsupportedEncodingException e) {
        print(toHex(utf8(charset)));
        throw e;
      }
      boolean silent = isTrue(loadPage_silent.get());
      StringBuilder buf = new StringBuilder();
      int n = 0;
      while (limit == null || n < limit) {
        ping();
        int ch = r.read();
        if (ch < 0)
          break;
        buf.append((char) ch);
        ++n;
        if (!silent && (n % loadPage_verboseness) == 0)
          print("  " + n + " chars read");
      }
      return buf.toString();
    } finally {
      if (loadPage_debug)
        print("loadPage done");
      vm_generalSubMap("URLConnection per thread").remove(currentThread());
      if (in != null)
        in.close();
    }
  }

  static public String loadPage_guessCharset(String contentType) {
    Matcher m = regexpMatcher("text/[a-z]+;\\s*charset=([^\\s]+)\\s*", contentType);
    String match = m.matches() ? m.group(1) : null;
    if (loadPage_debug)
      print("loadPage: contentType=" + contentType + ", match: " + match);
    return or(match, "UTF-8");
  }

  static public URLConnection loadPage_openConnection(URL url) {
    URLConnection con = openConnection(url);
    int timeout = toInt(loadPage_forcedTimeout_byThread.get());
    if (timeout == 0)
      timeout = loadPage_forcedTimeout;
    if (timeout != 0)
      setURLConnectionTimeouts(con, loadPage_forcedTimeout);
    else
      setURLConnectionDefaultTimeouts(con, loadPage_defaultTimeout);
    return con;
  }

  static public void setHeaders(URLConnection con) throws IOException {
    String computerID = getComputerID_quick();
    if (computerID != null)
      try {
        con.setRequestProperty("X-ComputerID", computerID);
        con.setRequestProperty("X-OS", System.getProperty("os.name") + " " + System.getProperty("os.version"));
      } catch (Throwable e) {
      }
  }

  static public <A> A println(A a) {
    return print(a);
  }

  static public String imageServerURL() {
    return or2(trim(loadTextFile(javaxDataDir("image-server-url.txt"))), "http://botcompany.de/images/raw/");
  }

  static volatile public boolean muricaPassword_pretendNotAuthed = false;

  static public String muricaPassword() {
    if (muricaPassword_pretendNotAuthed)
      return null;
    return trim(loadTextFile(muricaPasswordFile()));
  }

  static public String fileServerURL() {
    return "https://botcompany.de/files";
  }

  public static File mkdirsFor(File file) {
    return mkdirsForFile(file);
  }

  static public void copyStreamWithPrints(InputStream in, OutputStream out, String pat) {
    try {
      byte[] buf = new byte[65536];
      int total = 0;
      while (true) {
        int n = in.read(buf);
        if (n <= 0)
          return;
        out.write(buf, 0, n);
        if ((total + n) / 100000 > total / 100000)
          print(pat.replace("{*}", str(roundDownTo(100000, total))));
        total += n;
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void renameFile_assertTrue(File a, File b) {
    try {
      if (!a.exists())
        throw fail("Source file not found: " + f2s(a));
      if (b.exists())
        throw fail("Target file exists: " + f2s(b));
      mkdirsForFile(b);
      if (!a.renameTo(b))
        throw fail("Can't rename " + f2s(a) + " to " + f2s(b));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String mechList_opt_raw_fresh(String name) {
    Object readMode = mechMode().readMode;
    if (readMode instanceof File) {
      String md5Name = uniqueFileNameUsingMD5_80_v2(upper(name));
      return loadTextFileFromZipFile((File) readMode, md5Name);
    }
    boolean useLocal = false, useRemote = true;
    if (eq(readMode, "mergeLocalAndRemote"))
      useLocal = true;
    else if (eq(readMode, "local")) {
      useLocal = true;
      useRemote = false;
    }
    String s = "";
    if (useRemote) {
      if (eq(mechMode().readMode, "localCopies"))
        s = unnull(loadTextFile(remoteMechListMirrorFile(name)));
      else
        s = serverMechList_raw_fresh(name, true);
    }
    if (useLocal)
      s = appendNewLineIfNempty(s) + localMechList_opt_raw_fresh(name);
    return s;
  }

  static public void addToContainer(Container a, Component... b) {
    if (a == null)
      return;
    {
      swing(new Runnable() {

        public void run() {
          try {
            for (Component c : unnull(b)) if (c != null)
              a.add(c);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "for (Component c : unnull(b))\r\n      if (c != null) \r\n        a.add(c);";
        }
      });
    }
  }

  static public Map<String, MechListDependentCache<List<String>>> mechList_opt_tlft_cached_cache = ciMap();

  static public Lock mechList_opt_tlft_cached_lock = lock();

  static public List<String> mechList_opt_tlft_cached(String name) {
    MechListDependentCache<List<String>> listCache;
    {
      Lock __0 = mechList_opt_tlft_cached_lock;
      lock(__0);
      try {
        listCache = mechList_opt_tlft_cached_cache.get(name);
        if (listCache == null)
          mechList_opt_tlft_cached_cache.put(name, listCache = new MechListDependentCache(name, new F1<String, List<String>>() {

            public List<String> get(String x) {
              try {
                return tlft(x);
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "tlft(x)";
            }
          }));
      } finally {
        unlock(__0);
      }
    }
    return listCache.get();
  }

  static public boolean hasMethod(Object o, String method, Object... args) {
    return findMethod_cached(o, method, args) != null;
  }

  static public ThreadLocal makeAndCall_initChild = new ThreadLocal();

  static public Object makeAndCall_cached(String functionName, Object... args) {
    Class c = loadFunctions_cached(functionName);
    AutoCloseable closer = (AutoCloseable) (callF(makeAndCall_initChild.get(), c));
    AutoCloseable __1 = closer;
    try {
      return preciseCall(c, functionName, args);
    } finally {
      _close(__1);
    }
  }

  static public List<String> splitAtDoubleArrow(String s) {
    return splitAtDoubleArrow(javaTok(s));
  }

  static public List<String> splitAtDoubleArrow(List<String> tok) {
    List<String> l = new ArrayList();
    int i = 0;
    while (i < l(tok)) {
      int j = indexOfSubList(tok, splitAtDoubleArrow_tok(), i);
      if (j < 0)
        j = l(tok);
      l.add(trimJoin(tok.subList(i, j)));
      i = j + 3;
    }
    return l;
  }

  static public List<String> splitAtDoubleLeftArrow(String s) {
    return splitAtDoubleLeftArrow(javaTok(s));
  }

  static public List<String> splitAtDoubleLeftArrow(List<String> tok) {
    List<String> l = new ArrayList();
    int i = 0;
    while (i < l(tok)) {
      int j = indexOfSubList(tok, ll("<", "", "="), i);
      if (i >= l(tok))
        break;
      if (j < 0)
        j = l(tok);
      l.add(trimJoin(tok.subList(i, j)));
      i = j + 3;
    }
    return l;
  }

  static public Map<String, String> parseDoubleArrowMapCI_tlft(String s) {
    return parseDoubleArrowMapCI(tlft(s));
  }

  static public <B> TreeMap<String, B> asCaseInsensitiveMap(Map<String, B> map) {
    if (isCIMap(map))
      return (TreeMap) map;
    TreeMap<String, B> m = ciMap();
    putAll(m, map);
    return m;
  }

  static public void disposeWindow(final Window window) {
    if (window != null) {
      swing(new Runnable() {

        public void run() {
          try {
            window.dispatchEvent(new WindowEvent(window, WindowEvent.WINDOW_CLOSING));
            myFrames_list.remove(window);
            window.dispose();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "window.dispatchEvent(new WindowEvent(window, WindowEvent.WINDOW_CLOSING)); //...";
        }
      });
    }
  }

  static public void disposeWindow(final Component c) {
    disposeWindow(getWindow(c));
  }

  static public void disposeWindow(Object o) {
    if (o != null)
      disposeWindow(((Component) o));
  }

  static public void disposeWindow() {
    disposeWindow(heldInstance(Component.class));
  }

  static public JWindow showLoadingAnimation() {
    return showLoadingAnimation("Hold on user...");
  }

  static public JWindow showLoadingAnimation(String text) {
    try {
      return showAnimationInTopRightCorner("#1003543", text);
    } catch (Throwable __e) {
      return null;
    }
  }

  static public String loadTextFileFromZip(File inZip, String fileName) {
    return loadTextFileFromZipFile(inZip, fileName);
  }

  static public List<File> myLibraryFiles() {
    return (List<File>) get(myClassLoader(), "files");
  }

  static public Class hotwire_finish(ClassLoader classLoader, String progID, String javaSource) {
    return hotwire_finish(classLoader, progID, javaSource, "main");
  }

  static public Class hotwire_finish(ClassLoader classLoader, String progID, String javaSource, String mainClass) {
    try {
      Class<?> theClass = classLoader.loadClass(mainClass);
      Class j = getJavaX();
      setOpt(theClass, "myJavaSource_code", javaSource);
      synchronized (j) {
        call(j, "setVars", theClass, progID);
        callOpt(j, "addInstance", progID, theClass);
      }
      hotwire_copyOver(theClass);
      vmBus_send("hotwireFinished", theClass, mc());
      return theClass;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> List<A> cleanUpAndGetWeakReferencesList(List<WeakReference<A>> l) {
    if (l == null)
      return null;
    synchronized (l) {
      List<A> out = new ArrayList();
      for (int i = 0; i < l(l); i++) {
        A a = l.get(i).get();
        if (a == null)
          l.remove(i--);
        else
          out.add(a);
      }
      return out;
    }
  }

  static public <A> List<A> sorted(Collection<A> c, final Object comparator) {
    List<A> l = cloneList(c);
    sort(l, makeComparator(comparator));
    return l;
  }

  static public <A> List<A> sorted(Collection<A> c) {
    List<A> l = cloneList(c);
    sort(l);
    return l;
  }

  static public List<String> methodsStartingWith(Object o, final String prefix) {
    return filter(allMethodNames(o), new F1<String, Object>() {

      public Object get(String s) {
        try {
          return startsWith(s, prefix);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "startsWith(s, prefix)";
      }
    });
  }

  static public boolean interruptThread_verbose = false;

  static public void interruptThread(Thread t) {
    if (t == null)
      return;
    if (interruptThread_verbose)
      print("Interrupting thread " + t);
    vm_threadInterruptionReasonsMap().put(t, getStackTrace());
    t.interrupt();
    URLConnection c = (URLConnection) (vm_generalSubMap("URLConnection per thread").get(t));
    if (c != null) {
      try {
        print("Closing URLConnection of interrupted thread.");
        call(c, "disconnect");
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public boolean isJavaXClassLoader(ClassLoader cl) {
    return startsWithOneOf(className(cl), "main$JavaXClassLoader", "x30$JavaXClassLoader");
  }

  static public void setOptAll(Object o, Map<String, Object> fields) {
    if (fields == null)
      return;
    for (String field : keys(fields)) setOpt(o, field, fields.get(field));
  }

  static public void setOptAll(Object o, Object... values) {
    warnIfOddCount(values);
    for (int i = 0; i + 1 < l(values); i += 2) {
      String field = (String) values[i];
      Object value = values[i + 1];
      setOpt(o, field, value);
    }
  }

  static public Map<JFrame, Boolean> myFrames_list = weakHashMap();

  static public List<JFrame> myFrames() {
    return swing(new F0<List<JFrame>>() {

      public List<JFrame> get() {
        try {
          return keysList(myFrames_list);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret keysList(myFrames_list);";
      }
    });
  }

  static public Map<String, String> parseDoubleLeftArrowMap(Map<String, String> map, List<String> l) {
    for (String s : l) {
      List<String> x = splitAtDoubleLeftArrow(s);
      if (l(x) == 2)
        map.put(second(x), first(x));
    }
    return map;
  }

  static public boolean networkAllowanceTest(String url) {
    return isAllowed("networkAllowanceTest", url);
  }

  static final public boolean loadPageThroughProxy_enabled = false;

  static public String loadPageThroughProxy(String url) {
    return null;
  }

  static public <A> A printWithTime(A a) {
    return printWithTime("", a);
  }

  static public <A> A printWithTime(String s, A a) {
    print(hmsWithColons() + ": " + s, a);
    return a;
  }

  static public Map vm_generalSubMap(Object name) {
    synchronized (get(javax(), "generalMap")) {
      Map map = (Map) (vm_generalMap_get(name));
      if (map == null)
        vm_generalMap_put(name, map = synchroMap());
      return map;
    }
  }

  static public InputStream urlConnection_getInputStream(URLConnection con) throws IOException {
    UnknownHostException lastException = null;
    for (int _repeat_0 = 0; _repeat_0 < 2; _repeat_0++) {
      try {
        if (con instanceof HttpURLConnection)
          if (((HttpURLConnection) con).getResponseCode() == 500)
            throw new IOException(joinNemptiesWithColonSpace("Server code 500", tryToReadErrorStreamFromURLConnection(((HttpURLConnection) con))));
        return con.getInputStream();
      } catch (UnknownHostException e) {
        lastException = e;
        print("Retrying because of: " + e);
        continue;
      }
    }
    throw lastException;
  }

  static public String toHex(byte[] bytes) {
    return bytesToHex(bytes);
  }

  static public String toHex(byte[] bytes, int ofs, int len) {
    return bytesToHex(bytes, ofs, len);
  }

  static public byte[] utf8(String s) {
    return toUtf8(s);
  }

  static public Matcher regexpMatcher(String pat, String s) {
    return compileRegexp(pat).matcher(unnull(s));
  }

  static public URLConnection setURLConnectionTimeouts(URLConnection con, long timeout) {
    con.setConnectTimeout(toInt(timeout));
    con.setReadTimeout(toInt(timeout));
    if (con.getConnectTimeout() != timeout || con.getReadTimeout() != timeout)
      print("Warning: Timeouts not set by JDK.");
    return con;
  }

  static public URLConnection setURLConnectionDefaultTimeouts(URLConnection con, long timeout) {
    if (con.getConnectTimeout() == 0) {
      con.setConnectTimeout(toInt(timeout));
      if (con.getConnectTimeout() != timeout)
        print("Warning: URL connect timeout not set by JDK.");
    }
    if (con.getReadTimeout() == 0) {
      con.setReadTimeout(toInt(timeout));
      if (con.getReadTimeout() != timeout)
        print("Warning: URL read timeout not set by JDK.");
    }
    return con;
  }

  static public String getComputerID_quick() {
    return computerID();
  }

  static public File muricaPasswordFile() {
    return new File(javaxSecretDir(), "murica/muricaPasswordFile");
  }

  static public int roundDownTo(int n, int x) {
    return x / n * n;
  }

  static public long roundDownTo(long n, long x) {
    return x / n * n;
  }

  static public MechMode mechMode_value = new MechMode();

  static public MechMode mechMode() {
    return mechMode_value;
  }

  static public String upper(String s) {
    return s == null ? null : s.toUpperCase();
  }

  static public char upper(char c) {
    return Character.toUpperCase(c);
  }

  static public String loadTextFileFromZipFile(File inZip, String fileName) {
    try {
      if (!fileExists(inZip))
        return null;
      try {
        ZipFile zip = new ZipFile(inZip);
        try {
          return loadTextFileFromZipFile(zip, fileName);
        } finally {
          _close(zip);
        }
      } catch (Throwable e) {
        throw fail(f2s(inZip), e);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String loadTextFileFromZipFile(ZipFile zip, String fileName) {
    try {
      ZipEntry entry = zip.getEntry(fileName);
      if (entry == null)
        return null;
      InputStream fin = zip.getInputStream(entry);
      try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        copyStream(fin, baos);
        return fromUTF8(baos.toByteArray());
      } finally {
        _close(fin);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public File remoteMechListMirrorFile(String listName) {
    return newFile(remoteMechListMirrorsDir(), uniqueFileNameUsingMD5_80_v2(upper(listName)));
  }

  static public boolean serverMechList_raw_fresh_verbose = false;

  static public String serverMechList_raw_fresh(String name) {
    return serverMechList_raw_fresh(name, false);
  }

  static public String serverMechList_raw_fresh(String name, boolean opt) {
    Lock __0 = downloadLock();
    lock(__0);
    try {
      String text = null;
      try {
        text = loadTextFile(remoteMechListMirrorFile(name));
      } catch (Throwable __e) {
        _handleException(__e);
      }
      Object[] params = muricaCredentialsPlus("md5", md5OrNull(text), "l", l(text), "opt", opt ? 1 : 0, "withStatus", 1);
      String url = "http://butter.botcompany.de:8080/mech/raw/list-text/" + urlencode(name);
      String page = postPageSilently(url, params);
      Map map = jsonDecodeMap(page);
      boolean same = eq(map.get("Same"), true);
      boolean appended = eq(map.get("Appended"), true);
      saveTextFile(remoteMechListMirrorMetaFile(name), struct(getMultipleKeys(map, "Name", "Status")));
      if (!same) {
        if (appended)
          text += (String) map.get("Text");
        else
          text = (String) map.get("Text");
        saveTextFile(remoteMechListMirrorFile(name), text);
        File nameFile = remoteMechListMirrorNameFile(name);
        if (!fileExists(nameFile)) {
          String actualName = or((String) map.get("Name"), name);
          saveTextFile(nameFile, actualName);
        }
      }
      if (serverMechList_raw_fresh_verbose)
        print("Mech list " + name + ": " + (appended ? "appended" : same ? "same" : "downloaded") + ": " + n2(countLines(text), "line"));
      if (!same)
        vmBus_send("remoteMechListMirrorChanged", name);
      return text;
    } finally {
      unlock(__0);
    }
  }

  static public String localMechList_opt_raw_fresh(String name) {
    return unnull(loadTextFile(localMechListFile(name)));
  }

  static public Method findMethod_cached(Object o, String method, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        _MethodCache cache = callOpt_getCache(((Class) o));
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          for (Method m : methods) if (isStaticMethod(m) && findMethod_checkArgs(m, args, false))
            return m;
        return null;
      } else {
        _MethodCache cache = callOpt_getCache(o.getClass());
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          for (Method m : methods) if (findMethod_checkArgs(m, args, false))
            return m;
        return null;
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean preciseCall_debug = false;

  static public Object preciseCall(Object o, String method, Object... args) {
    try {
      if (o instanceof Class) {
        _MethodCache cache = callOpt_getCache(((Class) o));
        List<Method> methods = cache.cache.get(method);
        Lowest<Method> best = new Lowest();
        if (methods != null)
          for (Method m : methods) {
            {
              if (!(isStaticMethod(m)))
                continue;
            }
            int score = methodApplicabilityScore(m, args);
            if (score < Integer.MAX_VALUE) {
              if (preciseCall_debug)
                print("Method score: " + m + " " + score);
              best.put(m, score);
            }
          }
        Method m = best.get();
        if (m != null)
          return invokeMethod(m, null, args);
        return call_withVarargs(((Class) o), method, args);
      } else
        throw todo();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public List<String> splitAtDoubleArrow_tok;

  static public List<String> splitAtDoubleArrow_tok() {
    if (splitAtDoubleArrow_tok == null)
      splitAtDoubleArrow_tok = ll("=", "", ">");
    return splitAtDoubleArrow_tok;
  }

  static public boolean isCIMap(Map m) {
    return m instanceof TreeMap && ((TreeMap) m).comparator() == caseInsensitiveComparator();
  }

  static public Window getWindow(Object o) {
    if (!(o instanceof Component))
      return null;
    Component c = (Component) o;
    while (c != null) {
      if (c instanceof Window)
        return (Window) c;
      c = c.getParent();
    }
    return null;
  }

  static public <A> A heldInstance(Class<A> c) {
    List<Object> l = holdInstance_l.get();
    for (int i = l(l) - 1; i >= 0; i--) {
      Object o = l.get(i);
      if (isInstanceOf(o, c))
        return (A) o;
    }
    throw fail("No instance of " + className(c) + " held");
  }

  static public boolean showAnimationInTopRightCorner_alwaysOnTop = true;

  static public boolean showAnimationInTopRightCorner_on = true;

  static public JWindow showAnimationInTopRightCorner(String imageID, String text) {
    if (isHeadless() || !showAnimationInTopRightCorner_on)
      return null;
    return showAnimationInTopRightCorner(imageIcon(imageID), text);
  }

  static public JWindow showAnimationInTopRightCorner(final Image image, final String text) {
    if (image == null || isHeadless() || !showAnimationInTopRightCorner_on)
      return null;
    return showAnimationInTopRightCorner(imageIcon(image), text);
  }

  static public JWindow showAnimationInTopRightCorner(final ImageIcon imageIcon, final String text) {
    if (isHeadless() || !showAnimationInTopRightCorner_on)
      return null;
    return (JWindow) swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          JLabel label = new JLabel(imageIcon);
          if (nempty(text)) {
            label.setText(text);
            label.setVerticalTextPosition(SwingConstants.BOTTOM);
            label.setHorizontalTextPosition(SwingConstants.CENTER);
          }
          final JWindow window = showInTopRightCorner(label);
          onClick(label, new Runnable() {

            public void run() {
              try {
                window.dispose();
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "window.dispose()";
            }
          });
          if (showAnimationInTopRightCorner_alwaysOnTop)
            window.setAlwaysOnTop(true);
          return window;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JLabel label = new JLabel(imageIcon);\r\n    if (nempty(text)) {\r\n      label.s...";
      }
    });
  }

  static public JWindow showAnimationInTopRightCorner(final String imageID) {
    return showAnimationInTopRightCorner(imageID, "");
  }

  static public JWindow showAnimationInTopRightCorner(String imageID, double seconds) {
    return showAnimationInTopRightCorner(imageID, "", seconds);
  }

  static public JWindow showAnimationInTopRightCorner(String imageID, String text, double seconds) {
    if (isHeadless())
      return null;
    return disposeWindowAfter(iround(seconds * 1000), showAnimationInTopRightCorner(imageID, text));
  }

  static public JWindow showAnimationInTopRightCorner(BufferedImage img, String text, double seconds) {
    return disposeWindowAfter(iround(seconds * 1000), showAnimationInTopRightCorner(img, text));
  }

  static public Comparator makeComparator(final Object f) {
    if (f instanceof Comparator)
      return (Comparator) f;
    return new Comparator() {

      public int compare(Object a, Object b) {
        return (Integer) callF(f, a, b);
      }
    };
  }

  static public List<String> allMethodNames(Object o) {
    Class c = _getClass(o);
    TreeSet<String> names = new TreeSet();
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) names.add(m.getName());
      c = c.getSuperclass();
    }
    return asList(names);
  }

  static public ThreadLocal<List<Object>> holdInstance_l = new ThreadLocal();

  static public AutoCloseable holdInstance(Object o) {
    if (o == null)
      return null;
    listThreadLocalAdd(holdInstance_l, o);
    return new AutoCloseable() {

      public void close() {
        listThreadLocalPopLast(holdInstance_l);
      }
    };
  }

  static public <A, B> Map<A, B> weakHashMap() {
    return newWeakHashMap();
  }

  static public <A, B> List<A> keysList(Map<A, B> map) {
    return cloneListSynchronizingOn(keys(map), map);
  }

  static public <A> List<A> keysList(MultiSet<A> ms) {
    return ms == null ? null : keysList(ms.map);
  }

  static volatile public Object isAllowed_function;

  static volatile public boolean isAllowed_all = true;

  static public boolean isAllowed(String askingMethod, Object... args) {
    Object f = vm_generalMap_get("isAllowed_function");
    if (f != null && !isTrue(callF(f, askingMethod, args)))
      return false;
    return isAllowed_all || isTrue(callF(isAllowed_function, askingMethod, args));
  }

  static public String hmsWithColons() {
    return hmsWithColons(now());
  }

  static public String hmsWithColons(long time) {
    return new SimpleDateFormat("HH:mm:ss").format(time);
  }

  static public Object vm_generalMap_put(Object key, Object value) {
    return mapPutOrRemove(vm_generalMap(), key, value);
  }

  static public String joinNemptiesWithColonSpace(String... strings) {
    return joinNempties(": ", strings);
  }

  static public String joinNemptiesWithColonSpace(Collection<String> strings) {
    return joinNempties(": ", strings);
  }

  static public String tryToReadErrorStreamFromURLConnection(URLConnection conn) {
    try {
      if (conn instanceof HttpURLConnection)
        return stream2string(((HttpURLConnection) conn).getErrorStream());
      return null;
    } catch (Throwable __e) {
      return null;
    }
  }

  static public Map<String, java.util.regex.Pattern> compileRegexp_cache = syncMRUCache(10);

  static public java.util.regex.Pattern compileRegexp(String pat) {
    java.util.regex.Pattern p = compileRegexp_cache.get(pat);
    if (p == null) {
      compileRegexp_cache.put(pat, p = java.util.regex.Pattern.compile(pat));
    }
    return p;
  }

  static public String _computerID;

  static public Lock computerID_lock = lock();

  public static String computerID() {
    if (_computerID == null) {
      Lock __0 = computerID_lock;
      lock(__0);
      try {
        if (_computerID != null)
          return _computerID;
        File file = computerIDFile();
        _computerID = loadTextFile(file.getPath());
        if (_computerID == null) {
          _computerID = loadTextFile(userDir(".tinybrain/computer-id"));
          if (_computerID == null)
            _computerID = makeRandomID(12, new SecureRandom());
          saveTextFile(file, _computerID);
        }
      } finally {
        unlock(__0);
      }
    }
    return _computerID;
  }

  static public String fromUTF8(byte[] bytes) {
    return fromUtf8(bytes);
  }

  static public File remoteMechListMirrorsDir() {
    return javaxDataDir("Remote Mech Lists");
  }

  static public Lock downloadLock_lock = fairLock();

  static public Lock downloadLock() {
    return downloadLock_lock;
  }

  static public Object[] muricaCredentialsPlus(Object... params) {
    return concatArrays(muricaCredentials(), params);
  }

  static public String md5OrNull(String s) {
    return s == null ? null : md5(s);
  }

  static public String postPageSilently(String url, Object... params) {
    return doPostSilently(litmap(params), url);
  }

  static public Map jsonDecodeMap(String s) {
    Object o = jsonDecode(s);
    if (o instanceof List && empty((List) o))
      return new HashMap();
    if (o instanceof Map)
      return (Map) o;
    else
      throw fail("Not a JSON map: " + s);
  }

  static public File remoteMechListMirrorMetaFile(String listName) {
    return javaxDataDir("Remote Mech Lists/" + uniqueFileNameUsingMD5_80_v2(upper(listName)) + ".meta");
  }

  static public <A, B> Map<A, B> getMultipleKeys(Map<A, B> map, A... keys) {
    Map<A, B> map2 = similarEmptyMap(map);
    if (map != null)
      for (A key : keys) map2.put(key, map.get(key));
    return map2;
  }

  static public File remoteMechListMirrorNameFile(String listName) {
    return javaxDataDir("Remote Mech Lists/" + uniqueFileNameUsingMD5_80_v2(upper(listName)) + ".name");
  }

  static public File localMechListFile(String listName) {
    return newFile(localMechListsDir(), uniqueFileNameUsingMD5_80_v2(listName) + ".text");
  }

  static public Method findMethod(Object o, String method, Object... args) {
    return findMethod_cached(o, method, args);
  }

  static public boolean findMethod_checkArgs(Method m, Object[] args, boolean debug) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++) if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
      if (debug)
        System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
      return false;
    }
    return true;
  }

  static public int methodApplicabilityScore(Method m, Object[] args) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length)
      return Integer.MAX_VALUE;
    int score = 0;
    for (int i = 0; i < types.length; i++) {
      Object a = args[i];
      Class c = types[i];
      if (a == null)
        ++score;
      else if (c == a.getClass()) {
      } else if (isInstanceX(c, a))
        ++score;
      else
        return Integer.MAX_VALUE;
    }
    return score;
  }

  static public RuntimeException todo() {
    throw new RuntimeException("TODO");
  }

  static public RuntimeException todo(Object msg) {
    throw new RuntimeException("TODO: " + msg);
  }

  static public int imageIcon_cacheSize = 10;

  static public boolean imageIcon_verbose = false;

  static public Map<String, ImageIcon> imageIcon_cache;

  static public Lock imageIcon_lock = lock();

  static public ThreadLocal<Boolean> imageIcon_fixGIF = new ThreadLocal();

  static public ImageIcon imageIcon(String imageID) {
    try {
      if (imageID == null)
        return null;
      Lock __0 = imageIcon_lock;
      lock(__0);
      try {
        if (imageIcon_cache == null)
          imageIcon_cache = new MRUCache(imageIcon_cacheSize);
        imageID = fsI(imageID);
        ImageIcon ii = imageIcon_cache.get(imageID);
        if (ii == null) {
          if (imageIcon_verbose)
            print("Loading image icon: " + imageID);
          File f = loadBinarySnippet(imageID);
          Boolean b = imageIcon_fixGIF.get();
          if (!isFalse(b))
            ii = new ImageIcon(loadBufferedImageFixingGIFs(f));
          else
            ii = new ImageIcon(f.toURI().toURL());
        } else
          imageIcon_cache.remove(imageID);
        imageIcon_cache.put(imageID, ii);
        return ii;
      } finally {
        unlock(__0);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public ImageIcon imageIcon(File f) {
    try {
      return new ImageIcon(f.toURI().toURL());
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public ImageIcon imageIcon(Image img) {
    return new ImageIcon(img);
  }

  static public ImageIcon imageIcon(RGBImage img) {
    return imageIcon(img.getBufferedImage());
  }

  static public JWindow showInTopRightCorner(Component c) {
    return swing(() -> {
      JWindow w = new JWindow();
      w.add(c);
      w.pack();
      moveToTopRightCorner(w);
      w.setVisible(true);
      return w;
    });
  }

  static public <A extends JComponent> A onClick(final A c, final Object runnable) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            c.addMouseListener(new MouseAdapter() {

              public void mouseClicked(MouseEvent e) {
                callF(runnable, e);
              }
            });
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "c.addMouseListener(new MouseAdapter {\r\n      public void mouseClicked(MouseEv...";
        }
      });
    }
    return c;
  }

  static public void onClick(JButton btn, final Object runnable) {
    onEnter(btn, runnable);
  }

  static public <A extends Window> A disposeWindowAfter(int delay, final A w) {
    if (w != null)
      swingLater(delay, new Runnable() {

        public void run() {
          try {
            w.dispose();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "w.dispose();";
        }
      });
    return w;
  }

  static public <A extends Window> A disposeWindowAfter(A w, double seconds) {
    return disposeWindowAfter(toMS_int(seconds), w);
  }

  static public <A extends Window> A disposeWindowAfter(double seconds, A w) {
    return disposeWindowAfter(w, seconds);
  }

  static public <A> void listThreadLocalAdd(ThreadLocal<List<A>> tl, A a) {
    List<A> l = tl.get();
    if (l == null)
      tl.set(l = new ArrayList());
    l.add(a);
  }

  static public <A> A listThreadLocalPopLast(ThreadLocal<List<A>> tl) {
    List<A> l = tl.get();
    if (l == null)
      return null;
    A a = popLast(l);
    if (empty(l))
      tl.set(null);
    return a;
  }

  static public <A> ArrayList<A> cloneListSynchronizingOn(Collection<A> l, Object mutex) {
    if (l == null)
      return new ArrayList();
    synchronized (mutex) {
      return new ArrayList<A>(l);
    }
  }

  static public <A, B> B mapPutOrRemove(Map<A, B> map, A key, B value) {
    if (map != null && key != null)
      if (value != null)
        return map.put(key, value);
      else
        return map.remove(key);
    return null;
  }

  static public String stream2string(InputStream in) {
    return utf8streamToString(in);
  }

  static public File computerIDFile() {
    return javaxDataDir("Basic Info/computer-id.txt");
  }

  static public Object[] muricaCredentials() {
    String pass = muricaPassword();
    return nempty(pass) ? new Object[] { "_pass", pass } : new Object[0];
  }

  static public String doPostSilently(Map urlParameters, String url) {
    return doPostSilently(makePostData(urlParameters), url);
  }

  static public String doPostSilently(String urlParameters, String url) {
    doPost_silently.set(true);
    return doPost(urlParameters, url);
  }

  static public boolean jsonDecode_useOrderedMaps = true;

  static public Object jsonDecode(final String text) {
    final List<String> tok = jsonTok(text);
    if (l(tok) == 1)
      return null;
    class Y {

      public int i = 1;

      public Object parse() {
        String t = tok.get(i);
        if (t.startsWith("\"") || t.startsWith("'")) {
          String s = unquote(tok.get(i));
          i += 2;
          return s;
        }
        if (t.equals("{"))
          return parseMap();
        if (t.equals("["))
          return this.parseList();
        if (t.equals("null")) {
          i += 2;
          return null;
        }
        if (t.equals("false")) {
          i += 2;
          return false;
        }
        if (t.equals("true")) {
          i += 2;
          return true;
        }
        boolean minus = false;
        if (t.equals("-")) {
          minus = true;
          i += 2;
          t = get(tok, i);
        }
        if (isInteger(t)) {
          int j = i;
          i += 2;
          if (eqOneOf(get(tok, i), ".", "e", "E")) {
            while (isInteger(get(tok, i)) || eqOneOf(get(tok, i), ".", "e", "E", "-")) i += 2;
            double d = parseDouble(joinSubList(tok, j, i - 1));
            if (minus)
              d = -d;
            return d;
          } else {
            long l = parseLong(t);
            if (minus)
              l = -l;
            return l != (int) l ? (Object) new Long(l) : new Integer((int) l);
          }
        }
        throw new RuntimeException("Unknown token " + (i + 1) + ": " + t + ": " + text);
      }

      public Object parseList() {
        consume("[");
        List list = new ArrayList();
        while (!tok.get(i).equals("]")) {
          list.add(parse());
          if (tok.get(i).equals(","))
            i += 2;
        }
        consume("]");
        return list;
      }

      public Object parseMap() {
        consume("{");
        Map map = jsonDecode_useOrderedMaps ? new LinkedHashMap() : new TreeMap();
        while (!tok.get(i).equals("}")) {
          String key = unquote(tok.get(i));
          i += 2;
          consume(":");
          Object value = parse();
          map.put(key, value);
          if (tok.get(i).equals(","))
            i += 2;
        }
        consume("}");
        return map;
      }

      public void consume(String s) {
        if (!tok.get(i).equals(s)) {
          String prevToken = i - 2 >= 0 ? tok.get(i - 2) : "";
          String nextTokens = join(tok.subList(i, Math.min(i + 4, tok.size())));
          throw fail(quote(s) + " expected: " + prevToken + " " + nextTokens + " (" + i + "/" + tok.size() + ")");
        }
        i += 2;
      }
    }
    return new Y().parse();
  }

  static public File localMechListsDir() {
    return javaxDataDir("Mech Lists");
  }

  static public boolean loadBufferedImageFixingGIFs_debug = false;

  static public ThreadLocal<Var<byte[]>> loadBufferedImageFixingGIFs_output = new ThreadLocal();

  static public Image loadBufferedImageFixingGIFs(File file) {
    try {
      if (!file.exists())
        return null;
      if (!isGIF(file))
        return ImageIO.read(file);
      if (loadBufferedImageFixingGIFs_debug)
        print("loadBufferedImageFixingGIFs" + ": checking gif");
      ImageReader reader = ImageIO.getImageReadersByFormatName("gif").next();
      reader.setInput(ImageIO.createImageInputStream(file));
      int numImages = reader.getNumImages(true);
      IIOMetadata imageMetaData = reader.getImageMetadata(0);
      String metaFormatName = imageMetaData.getNativeMetadataFormatName();
      boolean foundBug = false;
      for (int i = 0; i < numImages && !foundBug; i++) {
        IIOMetadataNode root = (IIOMetadataNode) reader.getImageMetadata(i).getAsTree(metaFormatName);
        int nNodes = root.getLength();
        for (int j = 0; j < nNodes; j++) {
          org.w3c.dom.Node node = root.item(j);
          if (node.getNodeName().equalsIgnoreCase("GraphicControlExtension")) {
            String delay = ((IIOMetadataNode) node).getAttribute("delayTime");
            if (Integer.parseInt(delay) == 0) {
              foundBug = true;
            }
            break;
          }
        }
      }
      if (loadBufferedImageFixingGIFs_debug)
        print("loadBufferedImageFixingGIFs" + ": " + f2s(file) + " foundBug=" + foundBug);
      Image image;
      if (!foundBug) {
        image = Toolkit.getDefaultToolkit().createImage(f2s(file));
      } else {
        ByteArrayOutputStream baoStream = new ByteArrayOutputStream();
        {
          ImageOutputStream ios = ImageIO.createImageOutputStream(baoStream);
          try {
            ImageWriter writer = ImageIO.getImageWriter(reader);
            writer.setOutput(ios);
            writer.prepareWriteSequence(null);
            for (int i = 0; i < numImages; i++) {
              BufferedImage frameIn = reader.read(i);
              IIOMetadataNode root = (IIOMetadataNode) reader.getImageMetadata(i).getAsTree(metaFormatName);
              int nNodes = root.getLength();
              for (int j = 0; j < nNodes; j++) {
                org.w3c.dom.Node node = root.item(j);
                if (node.getNodeName().equalsIgnoreCase("GraphicControlExtension")) {
                  String delay = ((IIOMetadataNode) node).getAttribute("delayTime");
                  if (Integer.parseInt(delay) == 0) {
                    ((IIOMetadataNode) node).setAttribute("delayTime", "10");
                  }
                  break;
                }
              }
              IIOMetadata metadata = writer.getDefaultImageMetadata(new ImageTypeSpecifier(frameIn), null);
              metadata.setFromTree(metadata.getNativeMetadataFormatName(), root);
              IIOImage frameOut = new IIOImage(frameIn, null, metadata);
              writer.writeToSequence(frameOut, writer.getDefaultWriteParam());
            }
            writer.endWriteSequence();
          } finally {
            _close(ios);
          }
        }
        byte[] data = baoStream.toByteArray();
        setVar(loadBufferedImageFixingGIFs_output.get(), data);
        if (loadBufferedImageFixingGIFs_debug)
          print("Data size: " + l(data));
        image = Toolkit.getDefaultToolkit().createImage(data);
      }
      return image;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int moveToTopRightCorner_inset = 20;

  static public <A extends Component> A moveToTopRightCorner(A a) {
    return moveToTopRightCorner(moveToTopRightCorner_inset, moveToTopRightCorner_inset, a);
  }

  static public <A extends Component> A moveToTopRightCorner(int insetX, int insetY, A a) {
    Window w = getWindow(a);
    if (w != null)
      w.setLocation(getScreenSize().width - w.getWidth() - insetX, insetY);
    return a;
  }

  static public JTextField onEnter(final JTextField tf, final Object action) {
    if (action == null || tf == null)
      return tf;
    tf.addActionListener(new java.awt.event.ActionListener() {

      public void actionPerformed(java.awt.event.ActionEvent _evt) {
        try {
          tf.selectAll();
          callF(action);
        } catch (Throwable __e) {
          messageBox(__e);
        }
      }
    });
    return tf;
  }

  static public JButton onEnter(JButton btn, final Object action) {
    if (action == null || btn == null)
      return btn;
    btn.addActionListener(actionListener(action));
    return btn;
  }

  static public JList onEnter(JList list, Object action) {
    list.addKeyListener(enterKeyListener(rCallOnSelectedListItem(list, action)));
    return list;
  }

  static public JComboBox onEnter(final JComboBox cb, final Object action) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            if (cb.isEditable()) {
              JTextField text = (JTextField) cb.getEditor().getEditorComponent();
              onEnter(text, action);
            } else {
              cb.getInputMap().put(KeyStroke.getKeyStroke("ENTER"), "enter");
              cb.getActionMap().put("enter", abstractAction("", new Runnable() {

                public void run() {
                  try {
                    cb.hidePopup();
                    callF(action);
                  } catch (Exception __e) {
                    throw rethrow(__e);
                  }
                }

                public String toString() {
                  return "cb.hidePopup(); callF(action);";
                }
              }));
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (cb.isEditable()) {\r\n      JTextField text = (JTextField) cb.getEditor().g...";
        }
      });
    }
    return cb;
  }

  static public JTable onEnter(final JTable table, final Object action) {
    table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "Enter");
    table.getActionMap().put("Enter", new AbstractAction() {

      public void actionPerformed(ActionEvent e) {
        callF(action, table.getSelectedRow());
      }
    });
    return table;
  }

  static public JTextField onEnter(Object action, JTextField tf) {
    return onEnter(tf, action);
  }

  static public void swingLater(long delay, final Object r) {
    javax.swing.Timer timer = new javax.swing.Timer(toInt(delay), actionListener(wrapAsActivity(r)));
    timer.setRepeats(false);
    timer.start();
  }

  static public void swingLater(Object r) {
    SwingUtilities.invokeLater(toRunnable(r));
  }

  static public String utf8streamToString(InputStream in) {
    return readerToString(utf8bufferedReader(in));
  }

  static public ThreadLocal<Boolean> doPost_silently = new ThreadLocal();

  static public ThreadLocal<Long> doPost_timeout = new ThreadLocal();

  static public ThreadLocal<Map<String, String>> doPost_extraHeaders = new ThreadLocal();

  static public String doPost(Map urlParameters, String url) {
    return doPost(makePostData(urlParameters), url);
  }

  static public String doPost(String urlParameters, String url) {
    try {
      URL _url = new URL(url);
      ping();
      return doPost(urlParameters, _url.openConnection(), _url);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String doPost(String urlParameters, URLConnection conn, URL url) {
    try {
      boolean silently = isTrue(optParam(doPost_silently));
      Long timeout = optParam(doPost_timeout);
      Map<String, String> extraHeaders = optPar(doPost_extraHeaders);
      setHeaders(conn);
      for (String key : keys(extraHeaders)) {
        conn.setRequestProperty(key, extraHeaders.get(key));
      }
      int l = lUtf8(urlParameters);
      if (!silently)
        print("Sending POST request: " + hideCredentials(url) + " (" + l + " bytes)");
      if (timeout != null)
        setURLConnectionTimeouts(conn, timeout);
      ((HttpURLConnection) conn).setRequestMethod("POST");
      conn.setDoOutput(true);
      conn.setRequestProperty("Content-Length", str(l));
      OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
      writer.write(urlParameters);
      writer.flush();
      String contents = loadPage_utf8(conn, url, false);
      writer.close();
      return contents;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public List<String> jsonTok(String s) {
    List<String> tok = new ArrayList();
    int l = l(s);
    int i = 0;
    while (i < l) {
      int j = i;
      char c;
      String cc;
      while (j < l) {
        c = s.charAt(j);
        cc = s.substring(j, Math.min(j + 2, l));
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (cc.equals("/*")) {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (cc.equals("//")) {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      tok.add(s.substring(i, j));
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          if (s.charAt(j) == opener) {
            ++j;
            break;
          } else if (s.charAt(j) == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
      } else if (Character.isLetter(c))
        do ++j; while (j < l && Character.isLetter(s.charAt(j)));
      else if (Character.isDigit(c))
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      else
        ++j;
      tok.add(s.substring(i, j));
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    return tok;
  }

  static public byte[] isGIF_magic = bytesFromHex("47494638");

  static public boolean isGIF(byte[] data) {
    return byteArrayStartsWith(data, isGIF_magic);
  }

  static public boolean isGIF(File f) {
    return isGIF(loadBeginningOfBinaryFile(f, l(isGIF_magic)));
  }

  static public <A> void setVar(IVar<A> v, A value) {
    if (v != null)
      v.set(value);
  }

  static public Dimension getScreenSize() {
    return Toolkit.getDefaultToolkit().getScreenSize();
  }

  static public void messageBox(final String msg) {
    if (headless())
      print(msg);
    else {
      swing(new Runnable() {

        public void run() {
          try {
            JOptionPane.showMessageDialog(null, msg, "JavaX", JOptionPane.INFORMATION_MESSAGE);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "JOptionPane.showMessageDialog(null, msg, \"JavaX\", JOptionPane.INFORMATION_MES...";
        }
      });
    }
  }

  static public void messageBox(Throwable e) {
    printStackTrace(e);
    messageBox(hideCredentials(innerException2(e)));
  }

  static public ActionListener actionListener(final Object runnable) {
    return actionListener(runnable, null);
  }

  static public ActionListener actionListener(final Object runnable, final Object instanceToHold) {
    if (runnable instanceof ActionListener)
      return (ActionListener) runnable;
    final Object info = _threadInfo();
    return new java.awt.event.ActionListener() {

      public void actionPerformed(java.awt.event.ActionEvent _evt) {
        try {
          _threadInheritInfo(info);
          AutoCloseable __1 = holdInstance(instanceToHold);
          try {
            callF(runnable);
          } finally {
            _close(__1);
          }
        } catch (Throwable __e) {
          messageBox(__e);
        }
      }
    };
  }

  static public KeyListener enterKeyListener(final Object action) {
    return new KeyAdapter() {

      public void keyPressed(KeyEvent ke) {
        if (ke.getKeyCode() == KeyEvent.VK_ENTER)
          pcallF(action);
      }
    };
  }

  static public Runnable rCallOnSelectedListItem(final JList list, final Object action) {
    return new Runnable() {

      public void run() {
        try {
          pcallF(action, getSelectedItem(list));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pcallF(action, getSelectedItem(list))";
      }
    };
  }

  static public AbstractAction abstractAction(String name, final Object runnable) {
    return new AbstractAction(name) {

      public void actionPerformed(ActionEvent evt) {
        pcallF(runnable);
      }
    };
  }

  static public String readerToString(Reader r) {
    try {
      try {
        StringBuilder buf = new StringBuilder();
        int n = 0;
        while (true) {
          int ch = r.read();
          if (ch < 0)
            break;
          buf.append((char) ch);
          ++n;
        }
        return buf.toString();
      } finally {
        r.close();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int lUtf8(String s) {
    return l(utf8(s));
  }

  static public byte[] bytesFromHex(String s) {
    return hexToBytes(s);
  }

  static public boolean byteArrayStartsWith(byte[] a, byte[] b) {
    if (a == null || b == null)
      return false;
    if (a.length < b.length)
      return false;
    for (int i = 0; i < b.length; i++) if (a[i] != b[i])
      return false;
    return true;
  }

  static public byte[] loadBeginningOfBinaryFile(File file, int maxBytes) {
    return loadBinaryFilePart(file, 0, maxBytes);
  }

  static public boolean headless() {
    return isHeadless();
  }

  static public String getSelectedItem(JList l) {
    return (String) l.getSelectedValue();
  }

  static public String getSelectedItem(JComboBox cb) {
    return strOrNull(cb.getSelectedItem());
  }

  static public byte[] hexToBytes(String s) {
    if (odd(l(s)))
      throw fail("Hex string has odd length: " + quote(shorten(10, s)));
    int n = l(s) / 2;
    byte[] bytes = new byte[n];
    for (int i = 0; i < n; i++) {
      int a = parseHexChar(s.charAt(i * 2));
      int b = parseHexChar(s.charAt(i * 2 + 1));
      if (a < 0 || b < 0)
        throw fail("Bad hex byte: " + quote(substring(s, i * 2, i * 2 + 2)) + " at " + i * 2 + "/" + l(s));
      bytes[i] = (byte) ((a << 4) | b);
    }
    return bytes;
  }

  static public byte[] loadBinaryFilePart(File file, long start, long end) {
    try {
      RandomAccessFile raf = new RandomAccessFile(file, "r");
      int n = toInt(min(raf.length(), end - start));
      byte[] buffer = new byte[n];
      try {
        raf.seek(start);
        raf.readFully(buffer, 0, n);
        return buffer;
      } finally {
        raf.close();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int parseHexChar(char c) {
    if (c >= '0' && c <= '9')
      return charDiff(c, '0');
    if (c >= 'a' && c <= 'f')
      return charDiff(c, 'a') + 10;
    if (c >= 'A' && c <= 'F')
      return charDiff(c, 'A') + 10;
    return -1;
  }

  static public int charDiff(char a, char b) {
    return (int) a - (int) b;
  }

  static public int charDiff(String a, char b) {
    return charDiff(stringToChar(a), b);
  }

  static public char stringToChar(String s) {
    if (l(s) != 1)
      throw fail("bad stringToChar: " + s);
    return firstChar(s);
  }

  static public char firstChar(String s) {
    return s.charAt(0);
  }

  static abstract public class VF2<A, B> {

    abstract public void get(A a, B b);
  }

  static public class Var<A> implements IVar<A> {

    public Var() {
    }

    public Var(A v) {
      this.v = v;
    }

    public A v;

    public synchronized void set(A a) {
      if (v != a) {
        v = a;
        notifyAll();
      }
    }

    public synchronized A get() {
      return v;
    }

    public synchronized boolean has() {
      return v != null;
    }

    public synchronized void clear() {
      v = null;
    }

    public String toString() {
      return str(get());
    }
  }

  static public class DefunctClassLoader {
  }

  static public interface ITokCondition {

    public boolean get(List<String> tok, int i);
  }

  static abstract public class TokCondition {

    abstract public boolean get(List<String> tok, int i);
  }

  static public class ConceptsRefChecker {

    public Concepts cc;

    public List<Err> errors = new ArrayList();

    static public class Err {
    }

    static public class ErrNoBackRef extends Err implements IFieldsToList {

      static final public String _fieldOrder = "ref dest";

      public Concept.Ref ref;

      public Concept dest;

      public ErrNoBackRef() {
      }

      public ErrNoBackRef(Concept.Ref ref, Concept dest) {
        this.dest = dest;
        this.ref = ref;
      }

      public String toString() {
        return shortClassName(this) + "(" + ref + ", " + dest + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof ErrNoBackRef))
          return false;
        ErrNoBackRef __1 = (ErrNoBackRef) o;
        return eq(ref, __1.ref) && eq(dest, __1.dest);
      }

      public int hashCode() {
        int h = -1351603866;
        h = boostHashCombine(h, _hashCode(ref));
        h = boostHashCombine(h, _hashCode(dest));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { ref, dest };
      }
    }

    static public class ErrSuperfluousBackRef extends Err implements IFieldsToList {

      static final public String _fieldOrder = "ref dest";

      public Concept.Ref ref;

      public Concept dest;

      public ErrSuperfluousBackRef() {
      }

      public ErrSuperfluousBackRef(Concept.Ref ref, Concept dest) {
        this.dest = dest;
        this.ref = ref;
      }

      public String toString() {
        return shortClassName(this) + "(" + ref + ", " + dest + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof ErrSuperfluousBackRef))
          return false;
        ErrSuperfluousBackRef __2 = (ErrSuperfluousBackRef) o;
        return eq(ref, __2.ref) && eq(dest, __2.dest);
      }

      public int hashCode() {
        int h = 1840777816;
        h = boostHashCombine(h, _hashCode(ref));
        h = boostHashCombine(h, _hashCode(dest));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { ref, dest };
      }
    }

    static public class ErrDuplicateRef extends Err implements IFieldsToList {

      public Concept c;

      public ErrDuplicateRef() {
      }

      public ErrDuplicateRef(Concept c) {
        this.c = c;
      }

      public String toString() {
        return shortClassName(this) + "(" + c + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof ErrDuplicateRef))
          return false;
        ErrDuplicateRef __3 = (ErrDuplicateRef) o;
        return eq(c, __3.c);
      }

      public int hashCode() {
        int h = 1148352877;
        h = boostHashCombine(h, _hashCode(c));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { c };
      }
    }

    static public class ErrNullRef extends Err implements IFieldsToList {

      public Concept c;

      public ErrNullRef() {
      }

      public ErrNullRef(Concept c) {
        this.c = c;
      }

      public String toString() {
        return shortClassName(this) + "(" + c + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof ErrNullRef))
          return false;
        ErrNullRef __4 = (ErrNullRef) o;
        return eq(c, __4.c);
      }

      public int hashCode() {
        int h = 209467527;
        h = boostHashCombine(h, _hashCode(c));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { c };
      }
    }

    static public class ErrMissingRef extends Err implements IFieldsToList {

      public Concept c;

      public Concept.Ref ref;

      public ErrMissingRef() {
      }

      public ErrMissingRef(Concept c, Concept.Ref ref) {
        this.ref = ref;
        this.c = c;
      }

      public String toString() {
        return shortClassName(this) + "(" + c + ", " + ref + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof ErrMissingRef))
          return false;
        ErrMissingRef __5 = (ErrMissingRef) o;
        return eq(c, __5.c) && eq(ref, __5.ref);
      }

      public int hashCode() {
        int h = 1969969266;
        h = boostHashCombine(h, _hashCode(c));
        h = boostHashCombine(h, _hashCode(ref));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { c, ref };
      }
    }

    static public class ErrSuperfluousRef extends Err implements IFieldsToList {

      public Concept c;

      public Concept.Ref ref;

      public ErrSuperfluousRef() {
      }

      public ErrSuperfluousRef(Concept c, Concept.Ref ref) {
        this.ref = ref;
        this.c = c;
      }

      public String toString() {
        return shortClassName(this) + "(" + c + ", " + ref + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof ErrSuperfluousRef))
          return false;
        ErrSuperfluousRef __6 = (ErrSuperfluousRef) o;
        return eq(c, __6.c) && eq(ref, __6.ref);
      }

      public int hashCode() {
        int h = 762378943;
        h = boostHashCombine(h, _hashCode(c));
        h = boostHashCombine(h, _hashCode(ref));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { c, ref };
      }
    }

    static public class ErrDanglingSource extends Err implements IFieldsToList {

      static final public String _fieldOrder = "ref dest";

      public Concept.Ref ref;

      public Concept dest;

      public ErrDanglingSource() {
      }

      public ErrDanglingSource(Concept.Ref ref, Concept dest) {
        this.dest = dest;
        this.ref = ref;
      }

      public String toString() {
        return shortClassName(this) + "(" + ref + ", " + dest + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof ErrDanglingSource))
          return false;
        ErrDanglingSource __7 = (ErrDanglingSource) o;
        return eq(ref, __7.ref) && eq(dest, __7.dest);
      }

      public int hashCode() {
        int h = 666937292;
        h = boostHashCombine(h, _hashCode(ref));
        h = boostHashCombine(h, _hashCode(dest));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { ref, dest };
      }
    }

    static public class ErrDanglingDestination extends Err implements IFieldsToList {

      static final public String _fieldOrder = "ref dest";

      public Concept.Ref ref;

      public Concept dest;

      public ErrDanglingDestination() {
      }

      public ErrDanglingDestination(Concept.Ref ref, Concept dest) {
        this.dest = dest;
        this.ref = ref;
      }

      public String toString() {
        return shortClassName(this) + "(" + ref + ", " + dest + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof ErrDanglingDestination))
          return false;
        ErrDanglingDestination __8 = (ErrDanglingDestination) o;
        return eq(ref, __8.ref) && eq(dest, __8.dest);
      }

      public int hashCode() {
        int h = -1158731011;
        h = boostHashCombine(h, _hashCode(ref));
        h = boostHashCombine(h, _hashCode(dest));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { ref, dest };
      }
    }

    public ConceptsRefChecker() {
    }

    public ConceptsRefChecker(Concepts cc) {
      this.cc = cc;
    }

    public List<Err> run() {
      errors.clear();
      if (cc == null)
        return errors;
      Collection<Concept> concepts = cc.allConcepts();
      print("Checking " + nConcepts(concepts));
      for (Concept c : concepts) try {
        Object badElement = firstElementNotSubclassing(c.backRefs, Concept.Ref.class);
        if (badElement != null) {
          print("Bad element in backRefs of " + c + ": " + badElement);
          continue;
        }
        for (Concept.Ref ref : cloneList(c.backRefs)) {
          if (ref.get() != c)
            errors.add(new ErrSuperfluousBackRef(ref, c));
          if (ref.concept()._concepts != cc)
            errors.add(new ErrDanglingSource(ref, c));
        }
        badElement = firstElementNotSubclassing(c.refs, Concept.Ref.class);
        if (badElement != null) {
          print("Bad element in backRefs of " + c + ": " + badElement);
          continue;
        }
        List<Concept.Ref> refs = cloneList(c.refs);
        if (!allUnique(refs))
          errors.add(new ErrDuplicateRef(c));
        if (contains(refs, null))
          errors.add(new ErrNullRef(c));
        refs = nonNulls(refs);
        Collection<Concept.Ref> actualRefs = scanConceptForRefs(c);
        for (Concept.Ref ref : listMinusSet(refs, actualRefs)) errors.add(new ErrSuperfluousRef(c, ref));
        for (Concept.Ref ref : listMinusSet(actualRefs, refs)) errors.add(new ErrMissingRef(c, ref));
        for (Concept.Ref ref : refs) if (ref.has()) {
          if (!contains(ref.get().backRefs, ref))
            errors.add(new ErrNoBackRef(ref, c));
          if (ref.get()._concepts != cc)
            errors.add(new ErrDanglingDestination(ref, c));
        }
      } catch (Throwable e) {
        _handleException(e);
        print("Error processing concept " + c);
      }
      return errors;
    }

    public List<Err> errors() {
      return errors;
    }

    public String fixAll() {
      List<String> out = new ArrayList();
      for (Err err : reversed(cloneAndClear(errors))) {
        try {
          out.add("Processing " + err);
          if (err instanceof ErrNoBackRef) {
            ((ErrNoBackRef) err).ref.index();
            out.add("  reference added");
          } else if (err instanceof ErrSuperfluousRef) {
            ((ErrSuperfluousRef) err).ref.unindexAndDrop();
            out.add("  reference dropped");
          } else if (err instanceof ErrDanglingSource) {
            ((ErrDanglingSource) err).ref.get()._removeBackRef(((ErrDanglingSource) err).ref);
            out.add("  reference removed from destination");
          } else if (err instanceof ErrDanglingDestination) {
            ((ErrDanglingDestination) err).ref.get()._removeBackRef(((ErrDanglingDestination) err).ref);
            out.add("  reference removed from destination");
          } else if (err instanceof ErrMissingRef) {
            ((ErrMissingRef) err).ref.registerRef();
            out.add("  reference registered");
          } else
            out.add("  TODO - fix not implemented");
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
      return lines(out);
    }

    public String runAndFixAll() {
      run();
      return fixAll();
    }
  }

  static public class CancelToCancelPoint extends QuickException {

    public CancelPoint cp;

    public CancelToCancelPoint(CancelPoint cp) {
      this.cp = cp;
    }
  }

  final static public class ConceptFieldIndexDesc<A extends Concept, Val> implements IConceptIndex, IFieldIndex<A, Val>, IConceptCounter {

    public Class<A> cc;

    public String field;

    public HashMap<A, Val> objectToValue = new HashMap();

    public MultiSetMap<Val, A> valueToObject;

    public ConceptFieldIndexDesc() {
      valueToObject = treeMultiSetMap(reverseOrder());
    }

    public ConceptFieldIndexDesc(Class<A> cc, String field) {
      this(db_mainConcepts(), cc, field);
    }

    public ConceptFieldIndexDesc(Concepts concepts, Class<A> cc, String field) {
      this();
      this.field = field;
      this.cc = cc;
      concepts.addConceptIndex(this);
      for (A c : list(concepts, cc)) updateImpl(c);
      concepts.addFieldIndex(cc, field, this);
    }

    public void update(Concept c) {
      if (!isInstance(cc, c))
        return;
      updateImpl(c);
    }

    synchronized public void updateImpl(Concept c) {
      Val newValue = (Val) (cget(c, field));
      Val oldValue = objectToValue.get(c);
      if (newValue == null || newValue != oldValue) {
        valueToObject.remove(oldValue, (A) c);
        valueToObject.put(newValue, (A) c);
        objectToValue.put((A) c, newValue);
      }
    }

    public synchronized void remove(Concept c) {
      if (!isInstance(cc, c))
        return;
      Val value = (Val) (cget(c, field));
      objectToValue.remove(c);
      valueToObject.remove(value, (A) c);
    }

    synchronized public A get(Val value) {
      return valueToObject.getFirst(value);
    }

    public synchronized Collection<A> getAll(Val value) {
      return valueToObject.get(value);
    }

    public synchronized List<Val> allValues() {
      return cloneKeys_noSync(valueToObject.data);
    }

    public IterableIterator<A> objectIterator() {
      return navigableMultiSetMapValuesIterator_concurrent(valueToObject, this);
    }

    public synchronized MultiSet<Val> allValues_multiSet() {
      return multiSetMapToMultiSet(valueToObject);
    }

    public Class<? extends Concept> conceptClass() {
      return cc;
    }

    public int countConcepts() {
      return l(objectToValue);
    }

    public Collection<Concept> allConcepts() {
      return (Collection) keys(objectToValue);
    }

    public Object mutex() {
      return this;
    }

    synchronized public List<A> objectsWithValueGreaterThan(Object value) {
      SortedMap<Object, Set<A>> subMap = ((SortedMap<Object, Set<A>>) valueToObject.data).headMap(value);
      return concatLists(values(subMap));
    }
  }

  static public class FixedRateTimer extends java.util.Timer {

    public FixedRateTimer() {
      this(false);
    }

    public FixedRateTimer(boolean daemon) {
      this(defaultTimerName(), daemon);
    }

    public FixedRateTimer(String name) {
      this(name, false);
    }

    public FixedRateTimer(String name, boolean daemon) {
      super(name, daemon);
      _registerTimer(this);
    }

    public List<Entry> entries = synchroList();

    static public class Entry implements IFieldsToList {

      public TimerTask task;

      public long firstTime;

      public long period;

      public Entry() {
      }

      public Entry(TimerTask task, long firstTime, long period) {
        this.period = period;
        this.firstTime = firstTime;
        this.task = task;
      }

      public String toString() {
        return shortClassName(this) + "(" + task + ", " + firstTime + ", " + period + ")";
      }

      public Object[] _fieldsToList() {
        return new Object[] { task, firstTime, period };
      }
    }

    public void scheduleAtFixedRate(TimerTask task, long delay, long period) {
      entries.add(new Entry(task, now() + delay, period));
      super.scheduleAtFixedRate(task, delay, period);
    }

    public void cancel() {
      entries.clear();
      super.cancel();
    }

    public int purge() {
      entries.clear();
      return super.purge();
    }

    public FixedRateTimer changeRate(int newPeriod) {
      Object r = ((SmartTimerTask) first(entries).task).r;
      cancel();
      return doEvery(newPeriod, r);
    }
  }

  static public class ConceptFieldIndex<A extends Concept, Val> implements IConceptIndex, IFieldIndex<A, Val>, IConceptCounter {

    public Class<A> cc;

    public String field;

    public HashMap<A, Val> objectToValue = new HashMap();

    public MultiSetMap<Val, A> valueToObject = new MultiSetMap();

    public ConceptFieldIndex() {
    }

    public ConceptFieldIndex(Class<A> cc, String field) {
      this(db_mainConcepts(), cc, field);
    }

    public ConceptFieldIndex(Concepts concepts, Class<A> cc, String field) {
      this.field = field;
      this.cc = cc;
      concepts.addConceptIndex(this);
      for (A c : list(concepts, cc)) updateImpl(c);
      concepts.addFieldIndex(cc, field, this);
    }

    public void update(Concept c) {
      if (!isInstance(cc, c))
        return;
      updateImpl(c);
    }

    synchronized public void updateImpl(Concept c) {
      Val newValue = (Val) (cget(c, field));
      Val oldValue = objectToValue.get(c);
      if (newValue == null || newValue != oldValue) {
        valueToObject.remove(oldValue, (A) c);
        valueToObject.put(newValue, (A) c);
        objectToValue.put((A) c, newValue);
      }
    }

    public synchronized void remove(Concept c) {
      if (!isInstance(cc, c))
        return;
      Val value = (Val) (cget(c, field));
      objectToValue.remove(c);
      valueToObject.remove(value, (A) c);
    }

    synchronized public A get(Val value) {
      return valueToObject.getFirst(value);
    }

    public synchronized Collection<A> getAll(Val value) {
      return valueToObject.get(value);
    }

    public synchronized List<Val> allValues() {
      return cloneKeys_noSync(valueToObject.data);
    }

    public synchronized MultiSet<Val> allValues_multiSet() {
      return multiSetMapToMultiSet(valueToObject);
    }

    public Class<? extends Concept> conceptClass() {
      return cc;
    }

    public int countConcepts() {
      return l(objectToValue);
    }

    public Collection<Concept> allConcepts() {
      return (Collection) keys(objectToValue);
    }
  }

  static abstract public class IterableIterator<A> implements Iterator<A>, Iterable<A> {

    public Iterator<A> iterator() {
      return this;
    }

    public void remove() {
      unsupportedOperation();
    }
  }

  static abstract public class F2<A, B, C> {

    abstract public C get(A a, B b);
  }

  static public class Flag implements Runnable {

    public boolean up = false;

    public synchronized boolean raise() {
      if (!up) {
        up = true;
        notifyAll();
        return true;
      } else
        return false;
    }

    public synchronized void waitUntilUp() {
      while (!up) {
        try {
          wait();
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }

    public synchronized void waitUntilUp(long timeout) {
      if (!up) {
        try {
          wait(timeout);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }

    public synchronized boolean isUp() {
      return up;
    }

    public boolean get() {
      return isUp();
    }

    public String toString() {
      return isUp() ? "up" : "down";
    }

    public void waitForThisOr(Flag otherFlag) {
      try {
        while (!isUp() && !otherFlag.isUp()) Thread.sleep(50);
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public void run() {
      raise();
    }
  }

  final static public class ContentsIndexedList<A> extends RandomAccessAbstractList<A> implements IContentsIndexedList<A>, IContentsIndexedList2<A> {

    public Map<A, TreeSet<Elem<A>>> index = new HashMap();

    final public ArrayList<Elem<A>> list = new ArrayList();

    final static public class Elem<A> extends HasIndex {

      public A s;

      public String toString() {
        return "Elem " + quote(s) + "@" + idx;
      }
    }

    public ContentsIndexedList() {
    }

    public ContentsIndexedList(Map<A, TreeSet<Elem<A>>> index) {
      this.index = index;
    }

    public ContentsIndexedList(Collection<A> l) {
      addAll(l);
    }

    public A get(int i) {
      return list.get(i).s;
    }

    public int size() {
      return list.size();
    }

    public A set(int i, A s) {
      Elem<A> t = list.get(i);
      A old = t.s;
      if (eq(old, s))
        return old;
      removeFromIdx(t);
      t.s = s;
      addToIdx(t);
      return old;
    }

    public boolean add(A s) {
      ++modCount;
      Elem<A> t = new Elem();
      t.s = s;
      t.idx = size();
      list.add(t);
      addToIdx(t);
      return true;
    }

    public void add(int i, A s) {
      ++modCount;
      Elem<A> t = new Elem();
      t.s = s;
      t.idx = i;
      list.add(i, t);
      reorder(i + 1);
      addToIdx(t);
    }

    public boolean addAll(int i, Collection<? extends A> l) {
      int n = l.size();
      if (n == 0)
        return false;
      ++modCount;
      List<Elem<A>> l2 = emptyList(n);
      int j = i;
      for (A s : l) {
        Elem<A> t = new Elem();
        t.s = s;
        t.idx = j++;
        l2.add(t);
      }
      list.addAll(i, l2);
      reorder(i + n);
      for (Elem<A> t : l2) addToIdx(t);
      return true;
    }

    public A remove(int i) {
      ++modCount;
      Elem<A> t = list.get(i);
      removeFromIdx(t);
      list.remove(i);
      reorder(i);
      return t.s;
    }

    public void reorder(int fromIdx) {
      int n = size();
      for (int i = fromIdx; i < n; i++) list.get(i).idx = i;
    }

    public void removeFromIdx(Elem<A> t) {
      TreeSet<Elem<A>> idx = index.get(t.s);
      idx.remove(t);
      if (idx.isEmpty())
        index.remove(t.s);
    }

    public void addToIdx(Elem<A> t) {
      TreeSet<Elem<A>> idx = index.get(t.s);
      if (idx == null)
        index.put(t.s, idx = new TreeSet());
      idx.add(t);
    }

    @Override
    public int indexOf(Object s) {
      TreeSet<Elem<A>> l = index.get(s);
      return l == null ? -1 : first(l).idx;
    }

    @Override
    public int lastIndexOf(Object s) {
      TreeSet<Elem<A>> l = index.get(s);
      return l == null ? -1 : last(l).idx;
    }

    @Override
    public boolean contains(Object s) {
      return index.containsKey(s);
    }

    public void clear() {
      ++modCount;
      index.clear();
      list.clear();
    }

    public void removeRange(int fromIndex, int toIndex) {
      if (fromIndex == toIndex)
        return;
      ++modCount;
      for (int i = fromIndex; i < toIndex; i++) removeFromIdx(list.get(i));
      list.subList(fromIndex, toIndex).clear();
      reorder(fromIndex);
    }

    public int[] indicesOf(Object o) {
      TreeSet<Elem<A>> idx = index.get(o);
      if (idx == null)
        return emptyIntArray();
      int[] a = new int[idx.size()];
      int i = 0;
      for (Elem<A> t : idx) a[i++] = t.idx;
      return a;
    }

    public TreeSet<HasIndex> indicesOf_treeSetOfHasIndex(Object o) {
      return (TreeSet) index.get(o);
    }
  }

  static public class FileTransferable implements Transferable {

    public List<File> files = new ArrayList();

    public FileTransferable(File f) {
      files.add(f);
    }

    public FileTransferable(List<File> files) {
      this.files = files;
    }

    public DataFlavor[] getTransferDataFlavors() {
      return new DataFlavor[] { DataFlavor.javaFileListFlavor };
    }

    public boolean isDataFlavorSupported(DataFlavor flavor) {
      return eq(flavor, DataFlavor.javaFileListFlavor);
    }

    public Object getTransferData(DataFlavor flavor) {
      return files;
    }
  }

  static public class StringBufferWithMaxSize implements Appendable {

    public int maxSize;

    public StringBuilder buf = new StringBuilder();

    public StringBufferWithMaxSize(int maxSize) {
      this.maxSize = maxSize;
    }

    public Appendable append(char c) {
      return append(str(c));
    }

    public Appendable append(CharSequence csq, int start, int end) {
      return append(csq.subSequence(start, end));
    }

    public int size() {
      return l(buf);
    }

    public synchronized Appendable append(CharSequence csq) {
      if (full())
        return this;
      int n = l(csq);
      if (size() + n > maxSize)
        buf.append(subCharSequence(csq, maxSize - size()));
      else
        buf.append(csq);
      return this;
    }

    public boolean full() {
      return size() >= maxSize;
    }

    synchronized public String toString() {
      return str(buf);
    }
  }

  static abstract public class CloseableIterableIterator<A> extends IterableIterator<A> implements AutoCloseable {

    public void close() throws Exception {
    }
  }

  static public class ExpiringMap2<A, B> extends AbstractMap<A, B> {

    public Map<A, Pair<Long, B>> byKey = new HashMap();

    public PriorityBlockingQueue<Pair<Long, A>> queue = new PriorityBlockingQueue();

    public long standardExpiryTime;

    public boolean renewOnOverwrite = true, renewOnGet;

    public Object onChange;

    public ExpiringMap2() {
    }

    public ExpiringMap2(long standardExpiryTime) {
      this.standardExpiryTime = standardExpiryTime;
    }

    public ExpiringMap2(long standardExpiryTime, Object onChange) {
      this.onChange = onChange;
      this.standardExpiryTime = standardExpiryTime;
    }

    synchronized public boolean clean() {
      boolean changes = false;
      Pair<Long, A> p;
      while ((p = queue.peek()) != null && sysTime() >= p.a) {
        p = queue.poll();
        Pair<Long, B> v = byKey.get(p.b);
        if (v != null) {
          byKey.remove(p.b);
          changes = true;
          change();
        }
      }
      return changes;
    }

    public void change() {
      callF(onChange);
    }

    synchronized public B put(A a, B b) {
      clean();
      long timeout = sysTime() + standardExpiryTime;
      Pair<Long, B> p = byKey.get(a);
      if (p != null && renewOnOverwrite)
        queue.remove(new Pair(p.a, a));
      byKey.put(a, pair(timeout, b));
      change();
      if (p == null || renewOnOverwrite)
        queue.add(new Pair(timeout, a));
      return pairB(p);
    }

    synchronized public B remove(Object a) {
      clean();
      Pair<Long, B> p = byKey.get(a);
      if (p == null)
        return null;
      queue.remove(new Pair(p.a, a));
      byKey.remove(a);
      change();
      return p.b;
    }

    synchronized public B get(Object a) {
      clean();
      Pair<Long, B> p = byKey.get(a);
      if (renewOnGet && p != null) {
        queue.remove(new Pair(p.a, a));
        long timeout = sysTime() + standardExpiryTime;
        byKey.put((A) a, pair(timeout, p.b));
        queue.add(new Pair(timeout, a));
      }
      return pairB(p);
    }

    synchronized public Set<Map.Entry<A, B>> entrySet() {
      clean();
      return synchronizedSet(mapValues("pairB", byKey).entrySet());
    }

    synchronized public Set<A> keySet() {
      clean();
      return synchronizedSet(byKey.keySet());
    }

    synchronized public int size() {
      clean();
      return byKey.size();
    }

    public void setStandardExpiryTime(long ms) {
      standardExpiryTime = ms;
    }

    synchronized public ExpiringMap2<A, B> setMap(Map innerMap) {
      byKey = innerMap;
      return this;
    }
  }

  static public interface IFieldsToList {

    public Object[] _fieldsToList();
  }

  static public interface IF2<A, B, C> {

    public C get(A a, B b);
  }

  static public class ConceptFieldIndexCI<A extends Concept> implements IConceptIndex, IFieldIndex<A, String>, IConceptCounter {

    public Class<A> cc;

    public String field;

    public HashMap<A, String> objectToValue = new HashMap();

    public MultiSetMap<String, A> valueToObject = ciMultiSetMap();

    public ConceptFieldIndexCI() {
    }

    public ConceptFieldIndexCI(Class<A> cc, String field) {
      this(db_mainConcepts(), cc, field);
    }

    public ConceptFieldIndexCI(Concepts concepts, Class<A> cc, String field) {
      this.field = field;
      this.cc = cc;
      concepts.addConceptIndex(this);
      for (A c : list(concepts, cc)) updateImpl(c);
      concepts.addCIFieldIndex(cc, field, this);
    }

    public void update(Concept c) {
      if (!isInstance(cc, c))
        return;
      updateImpl(c);
    }

    synchronized public void updateImpl(Concept c) {
      String newValue = (String) (cget(c, field));
      String oldValue = objectToValue.get(c);
      if (newValue == null || newValue != oldValue) {
        valueToObject.remove(oldValue, (A) c);
        valueToObject.put(newValue, (A) c);
        objectToValue.put((A) c, newValue);
      }
    }

    public synchronized void remove(Concept c) {
      if (!isInstance(cc, c))
        return;
      String value = (String) (cget(c, field));
      objectToValue.remove(c);
      valueToObject.remove(value, (A) c);
    }

    synchronized public A get(String value) {
      return valueToObject.getFirst(value);
    }

    public synchronized List<A> getAll(String value) {
      return cloneList(valueToObject.get(value));
    }

    public Class<? extends Concept> conceptClass() {
      return cc;
    }

    public int countConcepts() {
      return l(objectToValue);
    }

    public Collection<Concept> allConcepts() {
      return (Collection) keys(objectToValue);
    }

    public synchronized List<String> allValues() {
      return cloneKeys_noSync(valueToObject.data);
    }

    public synchronized MultiSet<String> allValues_multiSet() {
      return multiSetMapToMultiSet(valueToObject);
    }

    public IterableIterator<A> objectIterator() {
      return navigableMultiSetMapValuesIterator(valueToObject);
    }
  }

  static public interface IVar<A> extends IF0<A> {

    public void set(A a);

    public A get();

    default public boolean has() {
      return get() != null;
    }

    default public void clear() {
      set(null);
    }
  }

  static public class MechMode implements IFieldsToList {

    public Object readMode;

    public Object writeMode;

    public MechMode() {
    }

    public MechMode(Object readMode, Object writeMode) {
      this.writeMode = writeMode;
      this.readMode = readMode;
    }

    public String toString() {
      return shortClassName(this) + "(" + readMode + ", " + writeMode + ")";
    }

    public boolean equals(Object o) {
      if (!(o instanceof MechMode))
        return false;
      MechMode __1 = (MechMode) o;
      return eq(readMode, __1.readMode) && eq(writeMode, __1.writeMode);
    }

    public int hashCode() {
      int h = -866263200;
      h = boostHashCombine(h, _hashCode(readMode));
      h = boostHashCombine(h, _hashCode(writeMode));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { readMode, writeMode };
    }
  }

  final static public class _MethodCache {

    final public Class c;

    final public HashMap<String, List<Method>> cache = new HashMap();

    public _MethodCache(Class c) {
      this.c = c;
      _init();
    }

    public void _init() {
      Class _c = c;
      while (_c != null) {
        for (Method m : _c.getDeclaredMethods()) if (!isAbstract(m) && !reflection_isForbiddenMethod(m))
          multiMapPut(cache, m.getName(), makeAccessible(m));
        _c = _c.getSuperclass();
      }
      for (Class intf : allInterfacesImplementedBy(c)) for (Method m : intf.getDeclaredMethods()) if (m.isDefault() && !reflection_isForbiddenMethod(m))
        multiMapPut(cache, m.getName(), makeAccessible(m));
    }

    public Method findMethod(String method, Object[] args) {
      try {
        List<Method> m = cache.get(method);
        if (m == null)
          return null;
        int n = m.size();
        for (int i = 0; i < n; i++) {
          Method me = m.get(i);
          if (call_checkArgs(me, args, false))
            return me;
        }
        return null;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public Method findStaticMethod(String method, Object[] args) {
      try {
        List<Method> m = cache.get(method);
        if (m == null)
          return null;
        int n = m.size();
        for (int i = 0; i < n; i++) {
          Method me = m.get(i);
          if (isStaticMethod(me) && call_checkArgs(me, args, false))
            return me;
        }
        return null;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }
  }

  static public String passwordSalt() {
    File f = programSecretFile("password-salt");
    if (fileExists(f))
      return loadTextFile(f);
    File global = javaxSecretDir("password-salt");
    if (fileExists(global))
      return loadTextFile(global);
    return loadTextFileOrCreateWithRandomID(f);
  }

  static public class PostReferenceable extends Concept {
  }

  static public class User extends PostReferenceable {

    static final public String _fieldOrder = "name passwordMD5 contact isMaster botToken";

    public String name;

    public SecretValue<String> passwordMD5;

    public String contact;

    public boolean isMaster = false;

    public SecretValue<String> botToken = aSecretGlobalID();

    public String toString() {
      return nempty(name) ? "User " + name : super.toString();
    }

    public String notificationSetting;
  }

  static public class UserCreatedObject extends PostReferenceable {

    static final public String _fieldOrder = "creator botInfo";

    public Ref<User> creator = new Ref();

    public String botInfo;
  }

  static public class UserPost extends UserCreatedObject {

    public String type, title, text;

    public boolean isPublic = true, hidden;

    public boolean creating = false;

    public long xmodified;

    public long bumped;

    static public List<String> fieldsToSaveOnDelete = ll("id", "text", "title", "type", "creatorID", "postRefs", "postRefTags", "hidden", "isPublic", "created", "_modified", "xmodified", "botInfo", "creating");

    public String text() {
      return text;
    }

    public RefL<PostReferenceable> postRefs = new RefL();

    public List<String> postRefTags = new ArrayList();

    static public String _fieldOrder = "title text type postRefs isPublic";

    public String toString() {
      String content = nempty(title) ? shorten(title) : escapeNewLines(shorten(text));
      return content + " [by " + author() + "]";
    }

    public boolean isReply() {
      return nempty(postRefs);
    }

    public boolean isBotPost() {
      return nempty(botInfo);
    }

    public boolean isMasterMade() {
      return creator.has() && creator.get().isMaster;
    }

    public String author() {
      String author = userName(creator.get());
      if (isBotPost())
        author += "'s bot " + quote(botInfo);
      return author;
    }

    public void change() {
      super.change();
      ((DynGazelleRocks) botMod()).distributePostChanges(this);
    }

    public List<Pair<PostReferenceable, String>> postRefsWithTags() {
      return zipTwoListsToPairs_lengthOfFirst(postRefs, postRefTags);
    }

    public List<PostReferenceable> postRefsWithTag(String tag) {
      return pairsAWhereB(postRefsWithTags(), t -> eqic_unnull(t, tag));
    }

    public UserPost primaryRefPost() {
      return optCast(UserPost.class, first(postRefsWithTag("")));
    }

    public void _setModified(long modified) {
      super._setModified(modified);
      setXModified(modified);
    }

    public void bump() {
      bumped = now();
      _change_withoutUpdatingModifiedField();
      for (UserPost p : syncInstancesOf(UserPost.class, postRefs)) p.setXModified();
    }

    public long modifiedOrBumped() {
      return max(_modified, bumped);
    }

    public void setXModified() {
      setXModified(now());
    }

    public void setXModified(long modified) {
      boolean changed = modified > xmodified;
      xmodified = modified;
      _change_withoutUpdatingModifiedField();
      if (changed)
        ((DynGazelleRocks) botMod()).distributePostChanges(this);
    }

    public void _backRefsModified() {
      super._backRefsModified();
      setXModified(now());
    }

    public int distanceToUserPost() {
      int n = 0;
      UserPost post = this;
      while (post != null && n < 100) {
        if (!post.isBotPost())
          return n;
        post = post.primaryRefPost();
      }
      return -1;
    }

    public boolean isJavaXCode() {
      return eqicOrSwicPlusSpace(type, "JavaX Code");
    }
  }

  abstract static public class DynGazelleRocks extends DynNewBot2 {

    transient public boolean inlineSearch = false;

    static public boolean _switchableField_webPushEnabled = true;

    public boolean webPushEnabled = true;

    static public boolean _switchableField_showPostStats = true;

    public boolean showPostStats = false;

    static public boolean _switchableField_showSuggestorBot = true;

    public boolean showSuggestorBot = true;

    static public boolean _switchableField_showMetaBotOnEveryPage = true;

    public boolean showMetaBotOnEveryPage = true;

    static public boolean _switchableField_delayAfterSuggestion = true;

    public int delayAfterSuggestion = 1000;

    static public boolean _switchableField_defaultBotPost = true;

    public int defaultBotPost = 238410;

    static public boolean _switchableField_teamPostID = true;

    public long teamPostID;

    static public boolean _switchableField_favIconID = true;

    public long favIconID;

    static public boolean _switchableField_gazelleBotURL = true;

    public String gazelleBotURL = "https://gazellebot.botcompany.de";

    transient public double systemLoad;

    transient public long processSize;

    public void init() {
      dm_require("#1017856/SystemLoad");
      dm_vmBus_onMessage("systemLoad", new VF1<Double>() {

        public void get(Double load) {
          try {
            if (setField("systemLoad", load))
              distributeDivChanges("serverLoadRightHemi");
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (setField(systemLoad := load))\r\n        distributeDivChanges(\"serverLoadRi...";
        }
      });
      dm_vmBus_onMessage("processSize", new VF1<Long>() {

        public void get(Long processSize) {
          try {
            if (setField("processSize", processSize))
              distributeDivChanges("memRightHemi");
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (setField(+processSize))\r\n        distributeDivChanges(\"memRightHemi\");";
        }
      });
      botName = heading = adminName = "gazelle.rocks";
      templateID = "#1030086";
      cssID = "237267";
      enableUsers = true;
      useWebSockets = true;
      showRegisterLink = true;
      showTalkToBotLink = false;
      alwaysRedirectToHttps = true;
      redirectOnLogout = true;
      showFullErrors = true;
      inlineSearch = true;
      lockWhileDoingBotActions = false;
      passwordSalt();
    }

    public void makeIndices() {
      super.makeIndices();
      indexConceptFieldCI(User.class, "name");
      indexConceptFieldDesc(UserPost.class, "xmodified");
      indexConceptFieldDesc(UserPost.class, "_modified");
      indexConceptFieldCI(UserPost.class, "botInfo");
    }

    public void start() {
      init();
      super.start();
      db_mainConcepts().modifyOnCreate = true;
      printConceptIndices();
      onConceptsChange(new Runnable() {

        public int postCount = countConcepts(UserPost.class);

        public void run() {
          int count = countConcepts(UserPost.class);
          if (count != postCount) {
            postCount = count;
            distributeDivChanges("postCount");
          }
        }
      });
      internalUser();
    }

    public void requestServed() {
      distributeDivChanges("webRequestsRightHemi");
    }

    public class WebSocketInfo {

      public String uri;

      public Map<String, String> params;

      public Set<Pair<String, Object>> liveDivs = new HashSet();
    }

    transient public Map<Object, WebSocketInfo> webSockets = syncWeakHashMap();

    public void cleanMeUp_webSockets() {
      closeAllKeysAndClear((Map) webSockets);
    }

    public void handleWebSocket(Object ws) {
      set(ws, "onClose", new Runnable() {

        public void run() {
          try {
            webSockets.remove(ws);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "webSockets.remove(ws)";
        }
      });
      set(ws, "onOpen", new Runnable() {

        public void run() {
          try {
            AutoCloseable __6 = enter();
            try {
              String uri = (String) (rcall("getUri", ws));
              Map<String, String> params = (Map<String, String>) (rcall("getParms", ws));
              print("WebSocket opened! uri: " + uri + ", params: " + params);
              WebSocketInfo info = new WebSocketInfo();
              info.uri = uri;
              info.params = params;
              webSockets.put(ws, info);
              long objectID = toLong(params.get("objectID"));
              long modified = toLong(params.get("modified"));
              if (objectID != 0) {
                UserPost c = getConceptOpt(UserPost.class, objectID);
                print("Modification: " + c.xmodified + " / " + c._modified + " / " + modified);
                if (c != null && c.xmodified > modified)
                  reloadBody(ws);
              }
            } finally {
              _close(__6);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "temp enter();   \r\n      String uri =  (String) (rcall getUri(ws));\r\n      Map...";
        }
      });
      setFieldToIVF1Proxy(ws, "onMessage", msg -> {
        AutoCloseable __7 = enter();
        try {
          try {
            WebSocketInfo info = webSockets.get(ws);
            if (info == null)
              return;
            String data = rcall_string("getTextPayload", msg);
            Map map = jsonDecodeMap(data);
            Object div = map.get("liveDiv");
            if (div instanceof String) {
              String contentDesc = ((String) div);
              syncAdd(info.liveDivs, pair(((String) div), (Object) contentDesc));
              reloadDiv(ws, ((String) div), calcDivContent(contentDesc));
            }
          } catch (Throwable __e) {
            _handleException(__e);
          }
        } finally {
          _close(__7);
        }
      });
    }

    public String serveRegisterForm(Map<String, String> params) {
      String user = trim(params.get("user"));
      String pw = trim(params.get("f_pw"));
      String pw2 = trim(params.get("pw2"));
      String redirect = params.get("redirect");
      String contact = trim(params.get("contact"));
      redirect = dropParamFromURL(redirect, "logout");
      if (empty(redirect))
        redirect = baseLink + "/";
      List<String> msgs = new ArrayList();
      if (nempty(user) || nempty(pw)) {
        Lock __1 = dbLock();
        lock(__1);
        try {
          if (empty(user))
            msgs.add("Please enter a user name");
          else if (l(user) < 4)
            msgs.add("Minimum user name length: 4 characters");
          else if (l(user) > 30)
            msgs.add("Maximum user name length: 30 characters");
          else if (hasConceptIC(User.class, "name", user))
            msgs.add("This user exists, please choose a different name");
          if (regexpContainsIC("[^a-z0-9\\-\\.]", user))
            msgs.add("Bad characters in user name (please use only a-z, 0-9, - and .)");
          if (empty(pw))
            msgs.add("Please enter a password");
          else if (l(pw) < 6)
            msgs.add("Minimum password length: 6 characters");
          if (neq(pw, pw2))
            msgs.add("Passwords don't match");
          if (empty(msgs)) {
            cnew(User.class, "name", user, "passwordMD5", new SecretValue(hashPW(pw)), "contact", contact);
            return hrefresh(5.0, redirect) + "User " + user + " created! Redirecting...";
          }
        } finally {
          unlock(__1);
        }
      }
      return hhtml(hhead(htitle("Register new user") + hsansserif() + hmobilefix() + hresponstable()) + hbody(hfullcenter(h3_htmlEncode(adminName + " | Register new user") + hpostform(hhidden("redirect", redirect) + tag("table", (empty(msgs) ? "" : tr(td() + td() + td(htmlEncode2_nlToBr(lines_rtrim(msgs))))) + tr(td_valignTop("Choose a user name:") + td_valignTop(hinputfield("user", user) + "<br>" + "(Minimum length 4. Characters allowed: a-z, 0-9, - and .)")) + tr(td_valignTop("Choose a password:") + td_valignTop(hpassword("f_pw", pw) + "<br>" + "(Minimum length 6 characters)")) + tr(td_valignTop("Repeat the password please:") + td(hpassword("pw2", pw2))) + tr(td_valignTop("Way to contact you (e.g. e-mail) - optional:") + td(hinputfield("contact", contact))) + tr(td() + td(hsubmit("Register"))), "class", "responstable"), "action", baseLink + "/register"))));
    }

    public boolean calcMasterAuthed(Req req) {
      return super.calcMasterAuthed(req) || req.auth != null && req.auth.user.has() && req.auth.user.get().isMaster;
    }

    public Object serveOtherPage(Req req) {
      String uri = req.uri;
      Matches m = new Matches();
      if (eq(uri, "/register"))
        return serveRegisterForm(req.params);
      if (eq(uri, "/becomeMaster") && req.auth != null && req.auth.user != null) {
        String pw = trim(req.params.get("masterPW"));
        if (eq(pw, realPW())) {
          cset(req.auth.user, "isMaster", true);
          return "You are master, " + req.auth.user + "!";
        }
        if (nempty(pw))
          return "Bad master PW";
        return hhtml(hhead(htitle("Become master") + hsansserif() + hmobilefix() + hresponstable()) + hbody(hfullcenter(h3_htmlEncode(adminName + " | Become master") + hpostform(tag("table", tr(td_valignTop("You are:") + td_valignTop(htmlEncode2(req.auth.user.get().name))) + tr(td_valignTop("Enter the master password:") + td_valignTop(hpassword("masterPW", pw))) + tr(td() + td(hsubmit("Become master user"))), "class", "responstable"), "action", baseLink + "/becomeMaster"))));
      }
      if (swic(uri, "/text/", m)) {
        long id = parseLong(m.rest());
        UserPost post = getConceptOpt(UserPost.class, id);
        if (post == null)
          return serve404("Post with ID " + id + " not found");
        if (!post.isPublic)
          return serve404("Post is not public");
        String ct = req.params.get("ct");
        Object response = nempty(ct) ? serveWithContentType(post.text(), ct) : serveText(post.text());
        if (eq(ct, "text/javascript"))
          addHeader("Service-Worker-Allowed", "/", response);
        return response;
      }
      if (swic(uri, "/postRefs/", m)) {
        long id = parseLong(m.rest());
        UserPost post = getConceptOpt(UserPost.class, id);
        if (post == null)
          return serve404("Post with ID " + id + " not found");
        if (!post.isPublic)
          return serve404("Post is not public");
        return serveJSON(lmap(__57 -> conceptID(__57), post.postRefs));
      }
      if (swic(uri, "/postRefsWithTags/", m)) {
        long id = parseLong(m.rest());
        UserPost post = getConceptOpt(UserPost.class, id);
        if (post == null)
          return serve404("Post with ID " + id + " not found");
        if (!post.isPublic)
          return serve404("Post is not public");
        return serveJSON(map(post.postRefsWithTags(), p -> litorderedmap("id", conceptID(p.a), "as", p.b)));
      }
      String uri2 = dropSlashPrefix(uri);
      if (isInteger(uri2)) {
        long id = parseLong(uri2);
        {
          Object __4 = serveIntegerLink(req, id);
          if (__4 != null)
            return __4;
        }
      }
      {
        Object __5 = serveOtherPage2(req);
        if (__5 != null)
          return __5;
      }
      return super.serveOtherPage(req);
    }

    static public boolean _switchableField_bot_maxPollSeconds = true;

    public double bot_maxPollSeconds = 600;

    static public boolean _switchableField_bot_pollInterval = true;

    public int bot_pollInterval = 500;

    public Object serveOtherPage2(Req req) {
      Matches m = new Matches();
      String uri = dropTrailingSlashIfNemptyAfterwards(req.uri);
      if (eq(uri, "/admin"))
        return hrefresh(baseLink + "/crud/Sequence");
      if (eq(uri, "/latestPost")) {
        UserPost post = highestConceptByField(UserPost.class, "created");
        if (post == null)
          return serve404("No posts in database");
        return servePost(post, req);
      }
      if (eq(uri, "/latestModifiedPost")) {
        UserPost post = highestConceptByField(UserPost.class, "_modified");
        if (post == null)
          return serve404("No posts in database");
        return servePost(post, req);
      }
      if (eq(uri, "/rootPosts")) {
        Collection<UserPost> posts = sortedByConceptIDDesc(filter(list(UserPost.class), post -> empty(post.postRefs)));
        framer().navBeforeTitle = true;
        framer().title = "Root Posts";
        framer().add(ul(lmap(__94 -> postToHTMLWithDate(__94), posts)));
        return framer().render();
      }
      if (eq(uri, "/allPosts")) {
        Collection<UserPost> posts = sortedByConceptIDDesc(list(UserPost.class));
        framer().navBeforeTitle = true;
        framer().title = "All Posts";
        framer().add(ul(lmap(__95 -> postToHTMLWithDate(__95), posts)));
        return framer().render();
      }
      if (eq(uri, "/latestPosts")) {
        Collection<UserPost> posts = takeFirst(50, sortedByConceptIDDesc(list(UserPost.class)));
        framer().navBeforeTitle = true;
        framer().title = "Latest Posts & Replies";
        framer().add(ul(lmap(__96 -> postToHTMLWithDate(__96), posts)));
        return framer().render();
      }
      if (eq(uri, "/latestModifiedPosts")) {
        Collection<UserPost> posts = takeFirst(50, sortedByFieldDesc("_modified", list(UserPost.class)));
        framer().navBeforeTitle = true;
        framer().title = "Latest Modified Posts & Replies";
        framer().add(ul(lmap(__97 -> postToHTMLWithDate(__97), posts)));
        return framer().render();
      }
      if (eq(uri, "/mainPosts")) {
        Collection<UserPost> posts = takeFirst(50, sortedByConceptID(conceptsWhereCI(UserPost.class, "type", "Main")));
        framer().navBeforeTitle = true;
        framer().title = "Main Posts";
        framer().add(ul(lmap(__98 -> postToHTMLWithDate(__98), posts)));
        return framer().render();
      }
      if (swic(uri, "/html/", m) && isInteger(m.rest())) {
        long id = parseLong(m.rest());
        return serveHTMLPost(id);
      }
      if (swic(uri, "/htmlEmbedded/", m) && isInteger(m.rest())) {
        long id = parseLong(m.rest());
        UserPost post = getConcept(UserPost.class, id);
        if (post == null)
          return serve404("Post not found");
        HTMLFramer1 framer = framer();
        framer.title = "[" + post.id + "] " + or2(post.title, shorten(post.text));
        framer.add(hcomment("Post begins here") + "\n" + post.text + "\n" + hcomment("Post ends here"));
        return framer.render();
      }
      if (swic(uri, "/css/", m) && isInteger(m.rest())) {
        long id = parseLong(m.rest());
        UserPost post = getConcept(UserPost.class, id);
        if (post == null)
          return serve404("Post not found");
        return serveWithContentType(post.text, "text/css");
      }
      if (eq(uri, "/search")) {
        framer().navBeforeTitle = true;
        String q = trim(req.params.get("q"));
        framer().title = joinNemptiesWithColon("Search", q);
        framer().add(hcomment("cookie: " + req.webRequest.cookie()));
        framer().add(hform(hinputfield("q", q, "autofocus", true) + " " + hsubmit("Search")));
        framer().add(p(small("Search help: If you search for multiple words, they can appear in any order in the text. An underscore matches any character. Plus means space. Post titles, texts and types are searched.")));
        if (nempty(q)) {
          ScoredSearcher<UserPost> searcher = new ScoredSearcher<>(q);
          long id = parseLongOpt_pcall(q);
          for (UserPost post : list(UserPost.class)) searcher.add(post, (post.id == id ? 4 : 0) + searcher.score(post.title) * 3 + searcher.score(post.text) * 2 + searcher.score(post.type) + searcher.score(joinWithSpace(post.postRefTags)) * 0.5);
          List<UserPost> posts = searcher.get();
          framer().add(p(b(addPlusToCount(searcher.maxResults, l(posts), nPosts(posts)) + " found for " + htmlEncode2(q))));
          framer().add(ul(lmap(__99 -> postToHTMLWithDate(__99), posts)));
        }
        return framer().render();
      }
      if (eq(uri, "/jstree/replies")) {
        UserPost post = getConcept(UserPost.class, parseLong(req.params.get("post")));
        if (post == null)
          return serveJSON(ll());
        Collection<UserPost> refs = referencingPosts(post);
        return serveJSON(map(refs, p -> litorderedmap("id", p.id, "text", postToHTMLWithDate(post), "children", nempty(referencingPosts(p)) ? true : null, "type", "root")));
      }
      if (startsWith(uri, "/touchPost/", m)) {
        long id = parseLong(m.rest());
        UserPost post = getConcept(UserPost.class, id);
        if (post == null)
          return serve404("Post not found");
        if (!canEditPost(post))
          return "You are not authorized to do this";
        touchConcept(post);
        return hscript("setTimeout('history.go(-1)', 1000);") + "Post " + post.id + " touched";
      }
      if (startsWith(uri, "/hidePost/", m)) {
        long id = parseLong(m.rest());
        UserPost post = getConcept(UserPost.class, id);
        if (post == null)
          return serve404("Post not found");
        if (!canEditPost(post))
          return "You are not authorized to do this";
        cset(post, "hidden", true);
        return hrefresh(postLink(post));
      }
      if (startsWith(uri, "/unhidePost/", m)) {
        long id = parseLong(m.rest());
        UserPost post = getConcept(UserPost.class, id);
        if (post == null)
          return serve404("Post not found");
        if (!canEditPost(post))
          return "You are not authorized to do this";
        cset(post, "hidden", false);
        return hrefresh(postLink(post));
      }
      if (startsWith(uri, "/markSafe/", m)) {
        long id = parseLong(m.rest());
        UserPost post = getConcept(UserPost.class, id);
        if (post == null)
          return serve404("Post not found");
        UserPost codePost = optCast(UserPost.class, first(post.postRefs));
        if (codePost == null)
          return "Code post not found";
        if (!canEditPost(codePost))
          return "You are not authorized to do this";
        uniqCI(UserPost.class, "creator", currentUser(), "text", "Mark safe", "postRefs", ll(post));
        sleepSeconds(6);
        touchConcept(codePost);
        return hrefresh(postLink(codePost));
      }
      if (eq(uri, "/mirrorAllConversations")) {
        if (!req.masterAuthed)
          return serveAuthForm(rawLink(uri));
        for (Conversation c : list(Conversation.class)) rstUpdateMirrorPosts.add(c);
        return "OK";
      }
      if (startsWith(uri, "/mirrorConversation/", m)) {
        if (!req.masterAuthed)
          return serveAuthForm(rawLink(uri));
        long id = parseLong(m.rest());
        Conversation conv = getConcept(Conversation.class, id);
        if (conv == null)
          return "Conversation not found";
        conv.updateMirrorPost();
        return "Mirror post updated (" + htmlEncode2(str(conv.mirrorPost.get())) + ")";
      }
      if (eqic(uri, "/favicon.ico"))
        return serveFavIcon();
      if (startsWith(uri, "/bot/")) {
        String json = req.params.get("json");
        Map data = new HashMap();
        if (nempty(json))
          data = jsonDecodeMap(json);
        data.putAll(withoutKey("json", req.params));
        String userName = (String) (data.get("_user"));
        if (userName == null)
          return serveJSON("error", "Need _user");
        String botToken = (String) (data.get("_botToken"));
        if (botToken == null)
          return serveJSON("error", "Need _botToken");
        User user = conceptWhereIC(User.class, "name", userName);
        if (user == null)
          return serveJSON("error", "User not found");
        if (!eq(botToken, getVar(user.botToken)))
          return serveJSON("error", "Wrong bot token");
        req.webRequest.noSpam();
        String function = dropPrefix("/bot/", uri);
        if (eq(function, "authTest"))
          return serveJSON("status", "You are authorized as " + user.name);
        if (eq(function, "postCount"))
          return serveJSON("result", countConcepts(UserPost.class));
        if (eq(function, "listPosts")) {
          List<String> fields = unnull(stringToStringListOpt(__115 -> tok_identifiersInOrder(__115), data.get("fields")));
          if (!fields.contains("id"))
            fields.add(0, "id");
          long changedAfter = toLong(data.get("changedAfter"));
          long repliesTo = toLong(data.get("repliesTo"));
          double pollFor = min(bot_maxPollSeconds, toLong(data.get("pollFor")));
          long startTime = sysNow();
          if (changedAfter > 0 && changedAfter == now())
            sleep(1);
          Collection<UserPost> posts;
          while (true) {
            if (repliesTo != 0) {
              posts = referencingPosts(getConcept(UserPost.class, repliesTo));
              if (changedAfter != 0)
                posts = objectsWhereFieldGreaterThan(posts, "_modified", changedAfter);
            } else {
              posts = changedAfter == 0 ? list(UserPost.class) : conceptsWithFieldGreaterThan_sorted(UserPost.class, "_modified", changedAfter);
            }
            if (nempty(posts) || pollFor == 0 || elapsedSeconds_sysNow(startTime) >= pollFor)
              return serveJSON_breakAtLevels(2, "result", map(posts, post -> mapToValues(fields, field -> getPostFieldForBot(post, field))));
            sleep(bot_pollInterval);
          }
        }
        if (eq(function, "createPost")) {
          Either<Object[], String> e = createPostArgs(user, data);
          if (e.isB())
            return serveJSON("error", e.b());
          Pair<UserPost, Boolean> post = uniq2(UserPost.class, e.a());
          if (!post.b)
            post.a.bump();
          return serveJSON("status", post.b ? "Post created" : "Post existed already, bumped", "postID", post.a.id);
        }
        if (eq(function, "editPost")) {
          long postID = toLong(data.get("postID"));
          UserPost post = getConcept(UserPost.class, postID);
          if (post == null)
            return serveJSON("error", "Post " + postID + " not found");
          Either<Object[], String> e = createPostArgs(user, data);
          if (e.isB())
            return serveJSON("error", e.b());
          int changes = cset(post, e.a());
          return serveJSON(changes > 0 ? "Post updated" : "Post updated, no changes", "postID", postID);
        }
        if (eq(function, "deletePosts")) {
          List<Long> ids = allToLong(tok_integersInOrder((String) data.get("ids")));
          List<String> results = new ArrayList();
          List<String> errors = new ArrayList();
          for (long id : unnull(ids)) {
            UserPost post = getConceptOpt(UserPost.class, id);
            if (post == null)
              errors.add("Post " + id + " not found");
            else {
              if (!user.isMaster && neq(post.creator.get(), user))
                errors.add("Can't delete post " + id + " from other user");
              else {
                deletePost(post);
                results.add("Post " + id + " deleted");
              }
            }
          }
          return serveJSON(litorderedmap("results", results, "errors", errors));
        }
        return serveBotFunction(req, function, data, user);
      }
      if (teamPostID != 0 && eq(uri, "/team"))
        return serveHTMLPost(teamPostID);
      if (startsWith(uri, "/history/", m)) {
        long id = parseLong(m.rest());
        UserPost post = getConcept(UserPost.class, id);
        if (post == null)
          return serve404("Post not found");
        return servePostHistory(post);
      }
      if (startsWith(uri, "/htmlBot/", m)) {
        long id = parseLong(m.rest());
        UserPost post = getConcept(UserPost.class, id);
        if (post == null)
          return serve404("Post not found");
        return loadPage(htmlBotURLOnBotServer(id));
      }
      if (eq(uri, "/deletedPosts")) {
        CloseableIterableIterator<String> lines = linesFromFile(deletedPostsFile());
        try {
          List<Map> posts = new ArrayList();
          while (lines.hasNext()) {
            String line = lines.next();
            if (isProperlyQuoted(line)) {
              Map map = safeUnstructureMap(unquote(line));
              posts.add(onlyKeys(map, "id", "title", "type"));
            }
          }
          return serveText("Deleted posts:\n" + lines(lmap(__100 -> struct(__100), posts)));
        } finally {
          _close(lines);
        }
      }
      if (eq(uri, "/formToPost")) {
        User user = currentUser();
        if (user == null)
          serve500("Please log in first");
        Map<String, String> params = cloneMap(req.params);
        String type = or2(getAndRemove(params, "_type"), "Form Input");
        String title = getAndRemove(params, "_title");
        List<UserPost> postRefs = map(id -> getConceptOpt(UserPost.class, parseLong(id)), tok_integersInOrder(getAndRemove(params, "_postRefs")));
        List<String> postRefTags = lines(getAndRemove(params, "_postRefTags"));
        String text = sortLinesAlphaNumIC(mapToLines(params, (k, v) -> urlencode(k) + "=" + urlencode(v)));
        Pair<UserPost, Boolean> p = uniq2(UserPost.class, "creator", user, "text", text, "type", type, "title", title, "postRefs", postRefs, "postRefTags", postRefTags);
        return (p.b ? "Post " + p.a.id + " created" : "Post " + p.a.id + " exists") + hrefresh(2.0, "/" + p.a.id);
      }
      if (eq(uri, "/webPushSubscribe")) {
        Map<String, Object> data = jsonDecodeMap(mapGet(req.webRequest.files(), "postData"));
        printVars_str("webPushSubscribe", "data", data);
        cnew(WebPushSubscription.class, "data", data, "clientIP", req.webRequest.clientIP());
        return serveJSON(litmap("message", "success"));
      }
      if (eq(uri, "/webPushNotify")) {
        if (!req.masterAuthed)
          return serveAuthForm(rawLink(uri));
        String msg = or2(req.params.get("msg"), "Hello user. It is " + localTimeWithSeconds() + " on the server");
        WebPushSubscription sub = getConcept(WebPushSubscription.class, toLong(req.params.get("webPushSubID")));
        if (sub == null)
          return serve404("webPushSubID not found");
        String mod = dm_require("#1030463/WebPushKeyManager");
        dm_call(mod, "sendNotification", sub.data, msg);
        return "Push message sent";
      }
      if (eq(uri, "/hashPW") && req.masterAuthed)
        return hashPW(req.params.get("pw"));
      return null;
    }

    public Object servePostHistory(UserPost post) {
      return serveText(unquoteAllLines(loadTextFile(postHistoryFile(post))));
    }

    public Either<Object[], String> createPostArgs(User user, Map data) {
      String text = (String) (data.get("text"));
      String type = (String) (data.get("type"));
      String title = (String) (data.get("title"));
      String botInfo = or2((String) data.get("botInfo"), "Made by bot");
      List<String> postRefTags = unnull(lines((String) data.get("refTags")));
      List<UserPost> postRefs = new ArrayList();
      Object _refs = data.get("refs");
      if (_refs instanceof String)
        for (String s : tok_integersInOrder(((String) _refs))) {
          UserPost ref = getConcept(UserPost.class, parseLong(s));
          if (ref == null)
            return eitherB("Post " + s + " not found");
          postRefs.add(ref);
        }
      if (empty(text) && empty(title))
        return eitherB("Need either a text or a title");
      boolean isPublic = eqOneOf(data.get("isPublic"), null, true, "1", "t", "true");
      return eitherA(litparams("creator", user, "text", text, "type", type, "title", title, "isPublic", isPublic, "botInfo", botInfo, "postRefs", postRefs, "postRefTags", postRefTags));
    }

    public Object serveBotFunction(Req req, String function, Map data, User user) {
      return serveJSON("error", "You are logged in correctly but function is unknown: " + function);
    }

    public Object servePost(UserPost post, Req req) {
      if (!post.isPublic)
        return serve404("Post is not public");
      HTMLFramer1 framer = framer();
      framer.add(hjs("webSocketQuery = " + jsQuote("?objectID=" + post.id + "&modified=" + post.xmodified) + ";\n" + "if (ws != null) ws.url = ws.url.split(\"?\")[0] + webSocketQuery;"));
      framer.title = "[" + post.id + "] " + or2(post.title, shorten(post.text));
      framer.add(p("By " + htmlEncode2(post.author()) + ". " + renderConceptDate(post)));
      if (nempty(post.type))
        framer.add(p("Post type: " + htmlEncode2(post.type)));
      List<String> actions = new ArrayList();
      if (eqic(post.type, "HTML"))
        actions.add(targetBlank("/html/" + post.id, "Show as HTML page"));
      if (eqic(post.type, "HTML (embedded)"))
        actions.add(targetBlank("/htmlEmbedded/" + post.id, "Show as HTML page"));
      if (eqicOneOf(post.type, "JavaX Code (HTML Bot)", "JavaX Code (Live Home Page)"))
        actions.add(targetBlank(htmlBotURL(post.id), "Show as HTML page"));
      if (eqic(post.type, "Conversation HTML"))
        actions.add(targetBlank("/demo?cookie=htmlDemo&_autoOpenBot=1&chatContentsPost=" + post.id, "Show in chat box"));
      if (canEditPost(post)) {
        actions.add(ahref(conceptEditLink(post), "Edit post"));
        actions.add(ahref(touchLink(post), "Touch post"));
        actions.add(post.hidden ? ahref(unhideLink(post), "Unhide post") : ahref(hideLink(post), "Hide post"));
      }
      actions.add(ahref(replyLink(post), "Reply"));
      actions.add(ahref(conceptDuplicateLink(post), "Duplicate"));
      actions.add(ahref(conceptEditLink(post, "onlyFields", "title"), "Rename"));
      if (postHasHistory(post))
        actions.add(ahref("/history/" + post.id, "History"));
      actions.add(ahref(baseLink + "/text/" + post.id, "Raw Text"));
      if (post.isJavaXCode()) {
        actions.add(targetBlank(simulateBotLink(post), "Talk to this bot"));
        actions.add(ahref(gazelleBotURL + "/transpilation/" + post.id, "Show Java transpilation"));
      }
      framer.add(p_vbar(actions));
      List<PostReferenceable> postRefs = cloneList(post.postRefs);
      if (nempty(postRefs)) {
        framer.add(p("In reference to:"));
        List<Pair<PostReferenceable, String>> l = post.postRefsWithTags();
        framer.add(ul(mapPairsToList(l, (ref, as) -> htmlEncode2(as) + " " + objectToHTML(ref))));
      }
      String text = post.text;
      String html = null;
      if (post.isJavaXCode()) {
        try {
          JavaXHyperlinker hl = new JavaXHyperlinker();
          hl.targetBlank = true;
          html = hl.codeToHTML(text);
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
      if (html == null)
        html = htmlEncodeWithLinking(post.text);
      if (eq(req.params.get("showLineFeeds"), "1"))
        html = html_showLineFeedsForPRE(html);
      framer.add(div(sourceCodeToHTML_noEncode(html), "style", hstyle_sourceCodeLikeInRepo()));
      Collection<UserPost> refs = referencingPosts(post);
      refs = reversed(refs);
      Pair<List<UserPost>, List<UserPost>> p = filterAntiFilter(refs, post2 -> !post2.hidden);
      if (nempty(p.a)) {
        framer.add(p("Referenced by posts (latest first):"));
        UserPost latestCodeSafetyPost = highestBy(p2 -> p2.modifiedOrBumped(), filter(p.a, p2 -> eqic(p2.botInfo, "Code Safety Checker")));
        framer.add(ul(map(p.a, p2 -> {
          String html2 = htmlEncode2(squareBracketIfNempty(getPostRefTag(p2, post))) + " " + objectToHTML(p2);
          if (p2 == latestCodeSafetyPost && cic(p2.text, "Unknown identifiers:"))
            html2 += " " + hbuttonLink("/markSafe/" + p2.id, htmlEncode2("Mark safe"));
          return html2;
        })));
      }
      if (nempty(p.b)) {
        framer.add(p("Referenced by hidden posts:"));
        framer.add(ul(map(p.b, p2 -> htmlEncode2(squareBracketIfNempty(getPostRefTag(p2, post))) + " " + objectToHTML(p2))));
      }
      if (showPostStats) {
        String stats = nLines(countLines(post.text)) + ", distance to user post: " + post.distanceToUserPost();
        framer.add(p_alignRight(small(span_title(stats, "Post stats"))));
      }
      return framer.render();
    }

    public String getPostRefTag(UserPost a, UserPost b) {
      return get(a.postRefTags, indexOf(a.postRefs, b));
    }

    public String htmlEncodeWithLinking(String text) {
      String html = htmlEncode2(text);
      return regexpReplace(html, gazelle_postMentionRegexp(), matcher -> {
        UserPost post = getConceptOpt(UserPost.class, parseLong(matcher.group(1)));
        return post == null ? matcher.group() : ahref(postLink(post), matcher.group());
      });
    }

    public List<UserPost> referencingPosts(UserPost post) {
      return sortedByCalculatedField(p -> p.modifiedOrBumped(), instancesOf(UserPost.class, allBackRefs(post)));
    }

    public List<UserPost> referencingPostsWithTag(UserPost post, String tag) {
      return filter(referencingPosts(post), p -> eqic_unnull(getPostRefTag(p, post), tag));
    }

    public String serveAuthForm(String redirect) {
      return hAddToHead(super.serveAuthForm(redirect), hInitWebSocket());
    }

    public String authFormMoreContent() {
      return navDiv();
    }

    public String navDiv() {
      return div_vbar(navLinks(), "style", "margin-bottom: 0.5em");
    }

    public Object handleAuth(Req req, String cookie) {
      String name = trim(req.params.get("user")), pw = trim(req.params.get("pw"));
      if (nempty(name) && nempty(pw) && nempty(cookie)) {
        Domain authDomain;
        User user = conceptWhereCI(User.class, "name", name);
        if (user == null)
          return errorMsg("User " + htmlEncode2(name) + " not found");
        if (!eq(getVar(user.passwordMD5), hashPW(pw)))
          return errorMsg("Bad password, please try again");
        cset(uniq(AuthedDialogID.class, "cookie", cookie), "restrictedToDomain", null, "master", user.isMaster, "user", user);
        String redirect = req.params.get("redirect");
        if (nempty(redirect))
          return hrefresh(redirect);
      }
      return null;
    }

    public Object serve2(Req req) {
      if (req.auth != null)
        cset(req.auth, "userMode", false);
      return super.serve2(req);
    }

    public String hashPW(String pw) {
      return md5(pw + passwordSalt());
    }

    public boolean inMasterMode(Req req) {
      return req.masterAuthed && !req.auth.userMode;
    }

    public Map<String, Object> filtersForClass(Class c, Req req) {
      if (c == UserPost.class) {
        if (req.auth != null && !inMasterMode(req))
          return litmap("creator", req.auth.user.get());
      }
      return super.filtersForClass(c, req);
    }

    public String loggedInUserDesc(Req req) {
      return req.auth == null ? "not logged in" : req.auth.user.get() == null ? (req.masterAuthed ? "master user" : "weird user") : "user " + req.auth.user.get().name;
    }

    public <A extends Concept> HCRUD_Concepts<A> crudData(Class<A> c, Req req) {
      HCRUD_Concepts<A> cc = super.crudData(c, req);
      if (c == UserPost.class) {
        cc.useDynamicComboBoxes = true;
        cc.lsMagic = true;
        cc.itemName = () -> "Post";
        cc.dropEmptyListValues = false;
        if (eq(req.params.get("noace"), "1"))
          cc.addRenderer("text", new HCRUD_Data.TextArea(80, 20));
        else
          cc.addRenderer("text", new HCRUD_Data.AceEditor(80, 20));
        cc.addRenderer("postRefTags", new HCRUD_Data.FlexibleLengthList(new HCRUD_Data.TextField(20)));
        cc.addRenderer("type", new HCRUD_Data.ComboBox(true, itemPlus("", userPostTypesByPopularity())));
        cc.fieldHelp("type", "Type of post (any format, optional)", "title", "Title for this post (any format, optional)", "text", "Text contents of this post (any format)", "nameInRepo", "Name in repository (not really used yet)", "botInfo", "Info on which bot made this post (if any)");
        cc.massageItemMapForList = (item, map) -> {
          applyFunctionToValue(__101 -> shorten(__101), map, "text", "title", "type", "nameInRepo");
          List<PostReferenceable> refs = ((UserPost) item).postRefs;
          map.put("postRefs", new HTML(joinWithBR(lmap(__58 -> objectToHTML(__58), refs))));
        };
        cc.getObject = id -> {
          Map<String, Object> map = cc.getObject_base(id);
          List refs = (List) (map.get("postRefs"));
          List tags = (List) (map.get("postRefTags"));
          print("counts:" + l(refs) + "/" + l(tags));
          map.put("postRefTags", padList(tags, l(refs), ""));
          return map;
        };
        cc.emptyObject = () -> {
          Map<String, Object> item = cc.emptyObject_base();
          item.put("creator", req.auth.user.get());
          return item;
        };
        cc.getObjectForDuplication = id -> {
          Map<String, Object> item = cc.getObjectForDuplication_base(id);
          item.put("creator", req.auth.user.get());
          UserPost post = getConcept(UserPost.class, toLong(id));
          List postRefs = cloneList((List) item.get("postRefs"));
          List<String> tags = cloneList((List) item.get("postRefTags"));
          for (int i = 0; i < l(tags); i++) if (eqic(tags.get(i), "created from")) {
            remove(postRefs, i);
            tags.remove(i--);
          }
          int idx = l(postRefs);
          postRefs.add(post);
          listSet(tags, idx, "created from");
          item.put("postRefs", postRefs);
          item.put("postRefTags", tags);
          print("tags", tags);
          return item;
        };
        cc.fieldsToHideInCreationForm = litset("hidden", "creating");
        cc.lockDB = true;
        cc.afterUpdate = (post, oldValues) -> {
          Map<String, Object> newValues = cgetAll_cloneLists(post, keys(oldValues));
          for (Map.Entry<? extends String, ? extends Object> __0 : _entrySet(newValues)) {
            String field = __0.getKey();
            Object newVal = __0.getValue();
            Object oldVal = oldValues.get(field);
            if (eq(oldVal, newVal)) {
              printVars_str("field", field, "oldVal", oldVal);
              continue;
            }
            IF1 f = o -> o instanceof Concept ? ((Concept) o).id : null;
            Object oldValForLog = defaultMetaTransformer().transform(f, oldVal);
            Object newValForLog = defaultMetaTransformer().transform(f, newVal);
            Map logEntry = litorderedmap("date", now(), "field", field, "oldVal", oldValForLog, "newVal", newValForLog);
            printStruct("logEntry", logEntry);
            logStructure(postHistoryFile(((UserPost) post)), logEntry);
          }
        };
        cc.actuallyDeleteConcept = post -> deletePost(((UserPost) post));
      }
      return cc;
    }

    public <A extends Concept> HCRUD makeCRUD(Class<A> c, Req req) {
      HCRUD crud = super.makeCRUD(c, req);
      if (c == UserPost.class) {
        crud.refreshAfterCommand = (params, msgs) -> {
          UserPost post = getConcept(UserPost.class, toLong(crud.objectIDToHighlight));
          return post != null ? hrefresh(postLink(post)) : crud.refreshAfterCommand_base(params, msgs);
        };
        crud.renderCmds = map -> {
          UserPost post = getConcept(UserPost.class, toLong(crud.itemID(map)));
          return joinNemptiesWithVBar(crud.renderCmds_base(map), ahref(postLink(post), "Show post"), ahref(touchLink(post), "Touch", "title", "Mark post as modified so it is looked at by bots again"));
        };
        crud.uneditableFields = litset("xmodified", "creating", "bumped");
        if (showSuggestorBot)
          crud.moreSelectizeOptions = name -> ", onChange: function() { console.log(\"selectize onChange\"); sugTrigger(); }";
        crud.showQuickSaveButton = true;
        crud.massageFormMatrix = (map, matrix) -> {
          int idx1 = indexOfPred(matrix, row -> cic(first(row), "Post Refs"));
          int idx2 = indexOfPred(matrix, row -> cic(first(row), "Post Ref Tags"));
          if (idx1 < 0 || idx2 < 0)
            return;
          List<String> row1 = matrix.get(idx1), row2 = matrix.get(idx2);
          row1.set(1, hcrud_mergeTables(row1.get(1), row2.get(1), "as"));
          matrix.remove(idx2);
          if (showSuggestorBot) {
            List<String> entries = ((HCRUD_Concepts) crud.data).comboBoxItems(conceptsWhereIC(UserPost.class, "type", "JavaX Code (Post Edit Suggestor)"));
            String js = hscript(replaceVars("\r\n            const suggestorSelector = $(\"[name=suggestorID]\");\r\n            var sugLoading = false, sugTriggerAgain = false;\r\n\r\n            function sugTrigger() {\r\n              //console.log(\"sugTrigger\");\r\n              if (sugLoading) { sugTriggerAgain = true; return; }\r\n\r\n              const sugText = suggestorSelector.text();\r\n              //console.log(\"sugText=\" + sugText);\r\n              const sugMatch = sugText.match(/\\d+/);\r\n              if (!sugMatch) {\r\n                //$(\"#suggestorResult\").html(\"\");\r\n                $(\"#suggestorResult\").hide();\r\n                return;\r\n              }\r\n              const suggestorID = sugMatch[0];\r\n\r\n              // get form data as JSON\r\n              \r\n              var data = {};\r\n              $(suggestorSelector).closest(\"form\").serializeArray().map(function(x){data[x.name] = x.value;});\r\n              const json = JSON.stringify(data);\r\n              console.log(\"JSON: \" + json);\r\n              \r\n              const url = \"" + gazelleBotURL + "/chatBotReply/\" + suggestorID;\r\n              console.log(\"Loading \" + url);\r\n              sugLoading = true;\r\n              $.post(url, {q : json},\r\n                function(result) {\r\n                  console.log(\"Suggestor result: \" + result);\r\n                  const answer = !result ? \"\" : JSON.parse(result).answer;\r\n                  if (answer) {\r\n                    $(\"#suggestorResult .sectionContents\").html(answer);\r\n                    $(\"#suggestorResult\").show();\r\n                  } else\r\n                    $(\"#suggestorResult\").hide();\r\n                  //$(\"#suggestorResult\").html(answer ? \"Suggestor says: \" + answer : \"\");\r\n                }\r\n              ).always(function() {\r\n                console.log(\"sug loading done\");\r\n                setTimeout(function() {\r\n                  sugLoading = false;\r\n                  if (sugTriggerAgain) { sugTriggerAgain = false; sugTrigger(); }\r\n                }, delayAfterSuggestion);\r\n              });\r\n            }\r\n\r\n            $(document).ready(function() {\r\n              $(\"input[type=text], input[type=hidden], textarea, select\").on('input propertychange change', sugTrigger);\r\n              sugTrigger();\r\n            });\r\n            suggestorSelector.change(sugTrigger);\r\n          ", "delayAfterSuggestion", delayAfterSuggestion));
            long defaultSuggestor = parseFirstLong(userDefaults(req.auth.user.get()).get("Default Suggestor Bot"));
            String selectedSuggestor = firstWhereFirstLongIs(entries, defaultSuggestor);
            matrix.add(0, ll("Suggestor Bot", crud.addHelpText("Choose a bot to assist you in editing this post [feature in development]", p_alignRight(crud.renderComboBox("suggestorID", selectedSuggestor, entries, false))) + htitledSectionWithDiv("Suggestion", "", "id", "suggestorResult", "style", "display: none", "innerDivStyle", "max-height: 150px; overflow: auto") + js));
          }
        };
        crud.flexibleLengthListLeeway = 3;
      }
      if (c == User.class) {
        crud.allowCreate = false;
        crud.uneditableFields = litset("passwordMD5");
      }
      return crud;
    }

    public String authFormHeading() {
      return h3_htmlEncode("Welcome to the Gazelle AI System") + p(hsnippetimg_scaleToWidth(200, "#1101482", 425, 257, "title", "Gazelle"));
    }

    public void makeFramer(Req req) {
      super.makeFramer(req);
      req.framer.renderTitle = () -> h1(ahref(baseLink + "/", himgsnippet("#1102967", "style", "height: 1em; vertical-align: bottom", "title", "Gazelle.rocks Logo")) + " " + htmlEncode2(req.framer.title));
      req.framer.add(navDiv());
      if (showMetaBotOnEveryPage && !eq(req.params.get("_reloading"), "1"))
        req.framer.willRender.add(new Runnable() {

          public void run() {
            try {
              req.framer.add(hscript("var botConfig = \"codePost=" + defaultBotPost + "\"; ") + hjssrc(baseLink + "/script"));
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "req.framer.add(hscript(\"var botConfig = \\\"codePost=\" + defaultBotPost + \"\\\"; ...";
          }
        });
    }

    public HTMLFramer1 framer() {
      Req req = currentReq.get();
      if (req.framer == null)
        makeFramer(req);
      return req.framer;
    }

    public String postLink(UserPost post) {
      return objectLink(post);
    }

    public String postLink(long postID) {
      return objectLink(getConcept(UserPost.class, postID));
    }

    public String touchLink(UserPost post) {
      return baseLink + "/touchPost/" + post.id;
    }

    public String hideLink(UserPost post) {
      return baseLink + "/hidePost/" + post.id;
    }

    public String unhideLink(UserPost post) {
      return baseLink + "/unhidePost/" + post.id;
    }

    public String objectLink(Concept c) {
      return baseLink + "/" + c.id;
    }

    public String objectToHTML(Concept c) {
      return c == null ? "-" : ahref(objectLink(c), htmlEncode2(str(c)));
    }

    public String postToHTMLWithDate(UserPost post) {
      return post == null ? "" : objectToHTML(post) + " " + span(htmlEncode2(renderHowLongAgoPlusModified(post.created, post._modified)), "style", "color: #888");
    }

    public boolean canEditPost(UserPost post) {
      User user = currentUser();
      return user != null && (user.isMaster || user == post.creator.get());
    }

    public User currentUser() {
      Req req = currentReq.get();
      return req != null && req.auth != null ? req.auth.user.get() : null;
    }

    public String replyLink(UserPost post) {
      return appendQueryToURL(crudLink(UserPost.class), "cmd", "new", "fList_postRefs_0", post == null ? null : post.id);
    }

    public String newPostLink() {
      return replyLink(null);
    }

    public List<String> navLinks(Object... __) {
      return gazelle_navLinks(baseLink, inlineSearch && !eq(currentReq.get().uri, "/search") ? "" : null, paramsPlus(__, "withTeam", teamPostID != 0));
    }

    public List<Class> botCmdClasses() {
      return ll();
    }

    public List<Class> crudClasses(Req req) {
      List<Class> l = super.crudClasses(req);
      l = listMinusSet(l, hiddenCrudClasses());
      l.add(UserPost.class);
      l.add(UploadedImage.class);
      if (req.masterAuthed) {
        l.add(User.class);
        if (webPushEnabled)
          l.add(WebPushSubscription.class);
      }
      return l;
    }

    public Set<Class> hiddenCrudClasses() {
      return litset(Lead.class, ConversationFeedback.class, Domain.class, UserKeyword.class, UploadedSound.class, Settings.class);
    }

    public Object getPostFieldForBot(UserPost post, String field) {
      if (eq(field, "creatorID"))
        return post.creator.get().id;
      if (eq(field, "creatorName"))
        return post.creator.get().name;
      if (eq(field, "creatorIsMaster"))
        return post.creator.get().isMaster;
      if (eq(field, "postRefs"))
        return lmap(__59 -> conceptID(__59), post.postRefs);
      return cget(post, field);
    }

    public void deletePost(UserPost post) {
      if (post == null)
        return;
      print("Deleting post " + post);
      Lock __2 = dbLock();
      lock(__2);
      try {
        long filePos = l(deletedPostsFile());
        logStructure(deletedPostsFile(), mapToValues(UserPost.fieldsToSaveOnDelete, field -> getPostFieldForBot(post, field)));
        for (Pair<PostReferenceable, String> p : post.postRefsWithTags()) if (p.a instanceof UserPost)
          logStructure(deletedRepliesFile((UserPost) p.a), litorderedmap("tag", p.b, "id", post.id, "filePos", filePos, "type", post.type));
        cdelete(post);
      } finally {
        unlock(__2);
      }
    }

    public File deletedPostsFile() {
      return programFile("deleted-posts.log");
    }

    public Object serveHTMLPost(long id) {
      UserPost post = getConcept(UserPost.class, id);
      if (post == null)
        return serve404("Post " + id + " not found");
      return post.text;
    }

    transient public ReliableSingleThread_Multi<UserPost> rstDistributePostChanges = new ReliableSingleThread_Multi<>(1000, __10 -> distributePostChanges_impl(__10));

    public void distributePostChanges(UserPost post) {
      rstDistributePostChanges.add(post);
    }

    public void distributePostChanges_impl(UserPost post) {
      AutoCloseable __8 = enter();
      try {
        String uri = "/" + post.id;
        for (Pair<Object, WebSocketInfo> p : syncMapToPairs(webSockets)) {
          if (eq(p.b.uri, uri))
            reloadBody(p.a);
        }
        if (eqic(post.type, "Line Labels")) {
          UserPost parent = post.primaryRefPost();
          print("Line labels post " + post.id + ", parent=" + parent);
          updateLineLabels(parent);
        }
      } finally {
        _close(__8);
      }
    }

    public void updateLineLabels(UserPost post) {
      try {
        if (post == null || !eqic(post.type, "Detailed Conversation Mirror"))
          return;
        print("Looking at conversation mirror " + post.id + " - " + post.title);
        long convID = toLong(regexpFirstGroupIC("Conversation (\\d+) with details", post.title));
        Conversation conv = getConcept(Conversation.class, convID);
        if (conv == null)
          return;
        print("updateLineLabels " + convID + " / " + post.id);
        MultiMap<Pair<Long, String>, String> labels = new MultiMap();
        for (UserPost p : referencingPostsWithTag(post, "")) if (eqic(p.type, "Line Labels")) {
          try {
            Map map = safeUnstructMapAllowingClasses(p.text(), Pair.class);
            print("Got labels map: " + map);
            putAll(labels, map);
          } catch (Throwable __e) {
            _handleException(__e);
          }
        }
        boolean change = false;
        for (Msg msg : cloneList(conv.msgs)) {
          List<String> lbls = uniquifyAndSortAlphaNum(allToUpper(labels.get(pair(msg.time, msg.text))));
          if (nempty(lbls))
            print("Got labels: " + lbls);
          if (!eq(msg.labels, lbls)) {
            msg.labels = lbls;
            change = true;
          }
        }
        if (change)
          conv.incReloadCounter();
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }

    public void reloadBody(Object ws) {
      print("Reloading body through WebSocket");
      String jsCode = " {\r\n      const loc = new URL(document.location);\r\n      const params = new URLSearchParams(loc.search);\r\n      params.set('_reloading', '1');\r\n      loc.search = params;\r\n      console.log(\"Getting: \" + loc);\r\n      $.get(loc, function(html) {\r\n        var bodyHtml = /<body.*?>([\\s\\S]*)<\\/body>/.exec(html)[1];\r\n        if (bodyHtml) {\r\n          //$(\"body\").html(bodyHtml);\r\n          $('body > *:not(.chatbot)').remove();\r\n          $(\"body\").prepend(bodyHtml);\r\n        }\r\n      });\r\n    } ";
      dm_call(ws, "send", jsonEncode(litmap("eval", jsCode)));
    }

    transient public ReliableSingleThread_Multi<String> rstDistributeDivChanges = new ReliableSingleThread_Multi<>(1000, __11 -> distributeDivChanges_impl(__11), new F0<AutoCloseable>() {

      public AutoCloseable get() {
        try {
          return enter();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret enter();";
      }
    });

    public void distributeDivChanges(String contentDesc) {
      rstDistributeDivChanges.add(contentDesc);
    }

    public void distributeDivChanges_impl(String contentDesc) {
      AutoCloseable __9 = enter();
      try {
        String content = null;
        for (Pair<Object, WebSocketInfo> p : syncMapToPairs(webSockets)) {
          for (String div : asForPairsWithB(p.b.liveDivs, contentDesc)) {
            if (content == null)
              content = calcDivContent(contentDesc);
            if (content == null) {
              print("No content for " + contentDesc);
              return;
            }
            reloadDiv(p.a, div, content);
          }
        }
      } finally {
        _close(__9);
      }
    }

    public void reloadDiv(Object ws, String div, String content) {
      String jsCode = replaceDollarVars(" $(\"#\" + $div).html($content);", "div", jsQuote(div), "content", jsQuote(content));
      dm_call(ws, "send", jsonEncode(litmap("eval", jsCode)));
    }

    public String calcDivContent(String contentDesc) {
      if (eq(contentDesc, "postCount"))
        return nPosts(countConcepts(UserPost.class));
      if (eq(contentDesc, "webRequestsRightHemi"))
        return n2(requestsServed);
      if (eq(contentDesc, "serverLoadRightHemi"))
        return formatDoubleX(systemLoad, 1);
      if (eq(contentDesc, "memRightHemi"))
        return str_toM(processSize);
      return null;
    }

    public int countUserPosts() {
      return countConcepts(UserPost.class, "botInfo", null) + countConcepts(UserPost.class, "botInfo", "");
    }

    public int countBotPosts() {
      return countConcepts(UserPost.class) - countUserPosts();
    }

    public Collection<UserPost> allUserPosts() {
      return filter(list(UserPost.class), p -> !p.isBotPost());
    }

    public List<String> userPostTypesByPopularity() {
      return listToTopTenCI(map(allUserPosts(), p -> p.type));
    }

    public void startMainScript(Conversation conv) {
      UserPost post = getConceptOpt(UserPost.class, parseLong(mapGet(conv.botConfig, "codePost")));
      if (post != null) {
        CustomBotStep step = uniq(CustomBotStep.class, "codePostID", post.id);
        if (executeStep(step, conv))
          nextStep(conv);
      } else
        super.startMainScript(conv);
    }

    public String simulateBotLink(UserPost post) {
      return appendQueryToURL(baseLink + "/demo", "_botConfig", makePostData("codePost", post.id), "_newConvCookie", 1, "_autoOpenBot", 1);
    }

    @Override
    public boolean isRequestFromBot(Req req) {
      return startsWith(req.uri, "/bot/");
    }

    public User internalUser() {
      return uniqCI(User.class, "name", "internal");
    }

    transient public ReliableSingleThread_Multi<Conversation> rstUpdateMirrorPosts = new ReliableSingleThread_Multi<>(100, c -> c.updateMirrorPost());

    public File postHistoryFile(UserPost post) {
      return programFile("Post Histories/" + post.id + ".log");
    }

    public boolean postHasHistory(UserPost post) {
      return fileNempty(postHistoryFile(post));
    }

    public File deletedRepliesFile(UserPost post) {
      return programFile("Deleted Replies/" + post.id + ".log");
    }

    public <A extends Concept> String makeClassNavItem(Class<A> c, Req req) {
      String html = super.makeClassNavItem(c, req);
      if (c == UserPost.class)
        html += " " + roundBracket(n2(countUserPosts()) + " from users, " + n2(countBotPosts()) + " from bots");
      return html;
    }

    @Override
    public String modifyTemplateBeforeDelivery(String html, Req req) {
      String contentsPostID = req.params.get("chatContentsPost");
      if (nempty(contentsPostID)) {
        html = html.replace("#N#", "99999");
        html = html.replace("chatBot_interval = 1000", "chatBot_interval = 3600*1000");
        html = html.replace("#INCREMENTALURL#", baseLink + "/text/" + contentsPostID + "?");
      }
      return html;
    }

    public String headingForReq(Req req) {
      String codePost = decodeHQuery(req.params.get("_botConfig")).get("codePost");
      if (nempty(codePost)) {
        UserPost post = getConcept(UserPost.class, parseLong(codePost));
        return post == null ? null : post.title;
      }
      return null;
    }

    public UserPost homePagePost() {
      return firstThat(p -> p.isMasterMade(), conceptsWhereIC(UserPost.class, "type", "JavaX Code (Live Home Page)"));
    }

    public String serveHomePage() {
      try {
        UserPost post = homePagePost();
        if (post != null)
          return loadPage(htmlBotURLOnBotServer(post.id));
      } catch (Throwable __e) {
        _handleException(__e);
      }
      return null;
    }

    public String htmlBotURL(long postID) {
      return baseLink + "/htmlBot/" + postID;
    }

    public String htmlBotURLOnBotServer(long postID) {
      return gazelleBotURL + "/htmlBot/" + postID;
    }

    public UserPost userDefaultsPost(User user) {
      return conceptWhereIC(UserPost.class, "creator", user, "type", "My Defaults");
    }

    public Map<String, String> userDefaults(User user) {
      UserPost post = userDefaultsPost(user);
      return post == null ? emptyMap() : parseColonPropertyCIMap(post.text);
    }

    public Object serveFavIcon() {
      if (favIconID != 0) {
        UploadedFile f = getConcept(UploadedFile.class, favIconID);
        if (f != null)
          return serveFile(f.theFile(), faviconMimeType());
        return serve404();
      }
      return serveFile(loadLibrary("#1400439"), faviconMimeType());
    }

    public String cssURL() {
      return gazelle_textURL(parseLong(cssID));
    }

    public String getText(long postID) {
      UserPost post = getConcept(UserPost.class, postID);
      return post == null ? null : post.text();
    }

    @Override
    public void addThingsAboveCRUDTable(Req req, Class c, List<String> aboveTable) {
      if (c == User.class)
        aboveTable.add(p(ahref(baseLink + "/register", "Register new user")));
    }

    public User user(Req req) {
      if (req == null)
        return null;
      AuthedDialogID auth = req.auth;
      return auth == null ? null : auth.user();
    }

    public Object serveIntegerLink(Req req, long id) {
      UserPost post = getConceptOpt(UserPost.class, id);
      if (post == null)
        return serve404("Post with ID " + id + " not found");
      return servePost(post, req);
    }
  }

  static public class CustomBotStep extends BotStep implements IInputHandler {

    public long codePostID;

    public String toString() {
      return "CustomBotStep " + codePostID;
    }

    public boolean run(Conversation conv) {
      String answer;
      try {
        Map result = (Map) (postJSONPage(replyURL(), "initial", 1, "cookie", conv.cookie));
        answer = (String) result.get("answer");
      } catch (Throwable e) {
        _handleException(e);
        answer = "Error: " + e.getMessage();
      }
      conv.add(new Msg(false, answer));
      cset(conv, "inputHandler", this);
      return false;
    }

    public String replyURL() {
      return ((DynGazelleRocks) botMod()).gazelleBotURL + "/chatBotReply/" + codePostID;
    }

    public boolean handleInput(String s, Conversation conv) {
      String answer;
      try {
        Map result = (Map) (postJSONPage(replyURL(), "q", s, "cookie", conv.cookie));
        answer = (String) result.get("answer");
      } catch (Throwable e) {
        _handleException(e);
        answer = "Error: " + e.getMessage();
      }
      conv.add(new Msg(false, answer));
      return true;
    }
  }

  static public String userName(User user) {
    return user != null ? user.name : "?";
  }

  static public class WebPushSubscription extends Concept {

    public String clientIP;

    public Map<String, Object> data;
  }

  static public class Chain<A> implements Iterable<A> {

    public A element;

    public Chain<A> next;

    public int size;

    public Chain() {
    }

    public Chain(A element) {
      this.element = element;
      size = 1;
    }

    public Chain(A element, Chain<A> next) {
      this.next = next;
      this.element = element;
      size = next != null ? next.size + 1 : 1;
    }

    public String toString() {
      return str(toList());
    }

    public ArrayList<A> toList() {
      ArrayList<A> l = emptyList(size);
      Chain<A> c = this;
      while (c != null) {
        l.add(c.element);
        c = c.next;
      }
      return l;
    }

    public Iterator<A> iterator() {
      return toList().iterator();
    }
  }

  static public class ConceptWithGlobalID extends Concept implements IHasGlobalID {

    public GlobalID globalID = aGlobalIDObjUnlessLoading();

    public GlobalID globalID() {
      return globalID;
    }

    public String globalIDStr() {
      return strOrNull(globalID);
    }

    public String prependGlobalID(String s) {
      return globalID == null ? s : "[" + globalID + "] " + s;
    }
  }

  static public class MechListDependentCache<A> extends Cache<A> {

    public String listName, lastListContents;

    public MechListDependentCache() {
    }

    public MechListDependentCache(String listName, Object maker) {
      this.maker = maker;
      this.listName = listName;
    }

    public A make() {
      return (A) callF(maker, lastListContents);
    }

    public A get() {
      if (hasLock(lock))
        return value;
      {
        String listContents = mL_raw(listName);
        Lock __0 = lock;
        lock(__0);
        try {
          if (!eqOrSame(listContents, lastListContents))
            clear();
          lastListContents = listContents;
        } finally {
          unlock(__0);
        }
      }
      return super.get();
    }
  }

  static public class MultiMap<A, B> {

    public Map<A, List<B>> data = new HashMap<A, List<B>>();

    public MultiMap() {
    }

    public MultiMap(boolean useTreeMap) {
      if (useTreeMap)
        data = new TreeMap();
    }

    public MultiMap(MultiMap<A, B> map) {
      putAll(map);
    }

    public MultiMap(Map<A, List<B>> data) {
      this.data = data;
    }

    public void put(A key, B value) {
      synchronized (data) {
        List<B> list = data.get(key);
        if (list == null)
          data.put(key, list = _makeEmptyList());
        list.add(value);
      }
    }

    public void add(A key, B value) {
      put(key, value);
    }

    public void addAll(A key, Collection<B> values) {
      putAll(key, values);
    }

    public void addAllIfNotThere(A key, Collection<B> values) {
      synchronized (data) {
        for (B value : values) setPut(key, value);
      }
    }

    public void setPut(A key, B value) {
      synchronized (data) {
        if (!containsPair(key, value))
          put(key, value);
      }
    }

    public boolean containsPair(A key, B value) {
      synchronized (data) {
        return get(key).contains(value);
      }
    }

    public void putAll(A key, Collection<B> values) {
      synchronized (data) {
        if (nempty(values))
          getActual(key).addAll(values);
      }
    }

    public void putAll(Iterable<Pair<A, B>> pairs) {
      synchronized (data) {
        for (Pair<A, B> p : unnull(pairs)) put(p.a, p.b);
      }
    }

    public void removeAll(A key, Collection<B> values) {
      synchronized (data) {
        for (B value : values) remove(key, value);
      }
    }

    public List<B> get(A key) {
      synchronized (data) {
        List<B> list = data.get(key);
        return list == null ? Collections.<B>emptyList() : list;
      }
    }

    public List<B> getOpt(A key) {
      synchronized (data) {
        return data.get(key);
      }
    }

    public List<B> getActual(A key) {
      synchronized (data) {
        List<B> list = data.get(key);
        if (list == null)
          data.put(key, list = _makeEmptyList());
        return list;
      }
    }

    public void clean(A key) {
      synchronized (data) {
        List<B> list = data.get(key);
        if (list != null && list.isEmpty())
          data.remove(key);
      }
    }

    public Set<A> keySet() {
      synchronized (data) {
        return data.keySet();
      }
    }

    public Set<A> keys() {
      synchronized (data) {
        return data.keySet();
      }
    }

    public void remove(A key) {
      synchronized (data) {
        data.remove(key);
      }
    }

    public void remove(A key, B value) {
      synchronized (data) {
        List<B> list = data.get(key);
        if (list != null) {
          list.remove(value);
          if (list.isEmpty())
            data.remove(key);
        }
      }
    }

    public void clear() {
      synchronized (data) {
        data.clear();
      }
    }

    public boolean containsKey(A key) {
      synchronized (data) {
        return data.containsKey(key);
      }
    }

    public B getFirst(A key) {
      synchronized (data) {
        List<B> list = get(key);
        return list.isEmpty() ? null : list.get(0);
      }
    }

    public void addAll(MultiMap<A, B> map) {
      putAll(map);
    }

    public void putAll(MultiMap<A, B> map) {
      synchronized (data) {
        for (A key : map.keySet()) putAll(key, map.get(key));
      }
    }

    public void putAll(Map<A, B> map) {
      synchronized (data) {
        if (map != null)
          for (Map.Entry<A, B> e : map.entrySet()) put(e.getKey(), e.getValue());
      }
    }

    public int keysSize() {
      synchronized (data) {
        return l(data);
      }
    }

    public int size() {
      synchronized (data) {
        int n = 0;
        for (List l : data.values()) n += l(l);
        return n;
      }
    }

    public List<A> reverseGet(B b) {
      synchronized (data) {
        List<A> l = new ArrayList();
        for (A key : data.keySet()) if (data.get(key).contains(b))
          l.add(key);
        return l;
      }
    }

    public Map<A, List<B>> asMap() {
      synchronized (data) {
        return cloneMap(data);
      }
    }

    public boolean isEmpty() {
      synchronized (data) {
        return data.isEmpty();
      }
    }

    public List<B> _makeEmptyList() {
      return new ArrayList();
    }

    public Collection<List<B>> allLists() {
      synchronized (data) {
        return new ArrayList(data.values());
      }
    }

    public Collection<List<B>> values() {
      return allLists();
    }

    public List<B> allValues() {
      return concatLists(data.values());
    }

    public Object mutex() {
      return data;
    }

    public String toString() {
      return "mm" + str(data);
    }
  }

  static public class HTMLTabs {

    public String id = "tabs_" + aGlobalID();

    public List<Tab> tabs = new ArrayList();

    public class Tab {

      public String id = aGlobalID();

      public String label;

      public String contents;

      public Tab(String label, String contents) {
        this.contents = contents;
        this.label = label;
      }
    }

    public String css() {
      return "\r\n      .tab-selectors {\r\n        background: #add8e6;\r\n        display: flex;\r\n      }\r\n      \r\n      .tab-selector {\r\n        flex: 1;\r\n        cursor: pointer;\r\n      }\r\n      \r\n      .tab-selectors .selected {\r\n        font-weight: bold;\r\n      }\r\n    ";
    }

    public String html() {
      return hcss(css()) + div(div(mapToLines(tabs, tab -> div(tab.label, "class", "tab-selector" + stringIf(tab == first(tabs), " selected"), "onclick", "$(" + jsQuote("#" + id + " .tab-selector") + ").removeClass('selected'); " + "$(this).addClass('selected'); " + "$(" + jsQuote("#" + id + " .tab-page") + ").hide(); " + "$(" + jsQuote("#" + tab.id) + ").show();")), "class", "tab-selectors") + mapToLines(tabs, tab -> div(tab.contents, "class", "tab-page", "style", tab == first(tabs) ? "" : "display: none", "id", tab.id)), "id", id, "class", "tabs-container");
    }

    public void add(String label, Object contents) {
      tabs.add(new Tab(label, strOrNull(contents)));
    }
  }

  static public class Lowest<A> {

    public A best;

    public double score;

    transient public Object onChange;

    synchronized public boolean isNewBest(double score) {
      return best == null || score < this.score;
    }

    synchronized public double bestScore() {
      return best == null ? Double.NaN : score;
    }

    public double score() {
      return bestScore();
    }

    synchronized public float floatScore() {
      return best == null ? Float.NaN : (float) score;
    }

    synchronized public float floatScoreOr(float defaultValue) {
      return best == null ? defaultValue : (float) score;
    }

    public boolean put(A a, double score) {
      boolean change = false;
      synchronized (this) {
        if (a != null && isNewBest(score)) {
          best = a;
          this.score = score;
          change = true;
        }
      }
      if (change)
        pcallF(onChange);
      return change;
    }

    synchronized public void clear() {
      best = null;
      score = 0;
    }

    synchronized public A get() {
      return best;
    }

    synchronized public boolean has() {
      return best != null;
    }

    synchronized public Pair<A, Double> pair() {
      return best == null ? null : new Pair(best, bestScore());
    }

    public String toString() {
      return "Score " + formatDouble_significant2(score, 4) + ": " + best;
    }
  }

  static public class JavaScript extends Var<String> {

    public JavaScript() {
    }

    public JavaScript(String src) {
      super(src);
    }

    public String javaScriptSource() {
      return get();
    }

    public String toString() {
      return hjs(get());
    }
  }

  static public interface IResourceLoader {

    public String loadSnippet(String snippetID);

    public String getTranspiled(String snippetID);

    public int getSnippetType(String snippetID);

    public String getSnippetTitle(String snippetID);

    public File loadLibrary(String snippetID);

    default public File pathToJavaXJar() {
      return pathToJavaxJar_noResourceLoader();
    }

    default public File getSnippetJar(String snippetID, String transpiledSrc) {
      return null;
    }
  }

  static public class BreadthFirstPathFinder_withLinkType<A, B> implements Steppable {

    public LinkedList<A> queue = new LinkedList();

    public MultiMap<A, Pair<A, B>> links = new MultiMap();

    public IF1<A, Collection<Pair<A, B>>> getChildren;

    public BreadthFirstPathFinder_withLinkType() {
    }

    public BreadthFirstPathFinder_withLinkType(IF1<A, Collection<Pair<A, B>>> getChildren) {
      this.getChildren = getChildren;
    }

    public BreadthFirstPathFinder_withLinkType(IF1<A, Collection<Pair<A, B>>> getChildren, A startNode) {
      this.getChildren = getChildren;
      add(startNode);
    }

    public void add(A a) {
      add(a, null, null);
    }

    public void add(A a, A prev, B linkType) {
      if (!links.containsKey(a)) {
        links.put(a, prev == null ? null : pair(prev, linkType));
        queue.add(a);
      }
    }

    public boolean step() {
      ping();
      if (empty(queue))
        return false;
      A a = popFirst(queue);
      for (Pair<A, B> link : unnull(getChildren.get(a))) add(link.a, a, link.b);
      return true;
    }

    public boolean nodeReached(A a) {
      return links.containsKey(a);
    }

    public Collection<A> getBackLinks(A a) {
      return pairsA(links.get(a));
    }

    public Collection<Pair<A, B>> getBackLinksWithTypes(A a) {
      return links.get(a);
    }

    public List<Pair<A, B>> examplePathWithTypes(A start, A dest) {
      List<Pair<A, B>> path = new ArrayList();
      A node = dest;
      path.add(pair(node, null));
      while (node != start) {
        ping();
        Pair<A, B> link = first(getBackLinksWithTypes(node));
        if (link == null)
          return null;
        path.add(link);
        node = link.a;
      }
      return reversed(path);
    }
  }

  static public class Either<A, B> {

    public byte which;

    public Object value;

    public Either() {
    }

    public Either(int which, Object value) {
      this.which = (byte) which;
      this.value = value;
    }

    public boolean isA() {
      return which == 1;
    }

    public boolean isB() {
      return which == 2;
    }

    public A a() {
      if (which != 1)
        _failMe();
      return (A) value;
    }

    public B b() {
      if (which != 2)
        _failMe();
      return (B) value;
    }

    public A aOpt() {
      return which != 1 ? null : (A) value;
    }

    public B bOpt() {
      return which != 2 ? null : (B) value;
    }

    public void _failMe() {
      throw fail("Either object is of wrong type: " + shortClassName(value));
    }

    public String toString() {
      return "Either" + (isA() ? "A" : "B") + "(" + value + ")";
    }
  }

  static public class ReliableSingleThread_Multi<A> {

    public IVF1<A> processObject;

    public int delay;

    public ReliableSingleThread_Multi(IVF1<A> processObject) {
      this.processObject = processObject;
    }

    public ReliableSingleThread_Multi(int delay, IVF1<A> processObject) {
      this.processObject = processObject;
      this.delay = delay;
    }

    public ReliableSingleThread_Multi(int delay, IVF1<A> processObject, F0<AutoCloseable> enter) {
      this.processObject = processObject;
      this.delay = delay;
      setEnter(enter);
    }

    public Set<A> changedObjects = synchroSet();

    public ReliableSingleThread rst = new ReliableSingleThread(new Runnable() {

      public void run() {
        try {
          process();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "process();";
      }
    });

    public void add(A a) {
      if (changedObjects.add(a))
        rst.trigger();
    }

    public void addAll(Iterable<A> l) {
      for (A a : unnull(l)) add(a);
    }

    final public void process() {
      sleep(delay);
      for (A object : syncCloneAndClearList(changedObjects)) pcallF(processObject, object);
    }

    public void setEnter(F0<AutoCloseable> enter) {
      rst.enter = enter;
    }
  }

  static public interface Steppable {

    public boolean step();
  }

  static public class proxy_InvocationHandler implements InvocationHandler {

    public Object target;

    public proxy_InvocationHandler() {
    }

    public proxy_InvocationHandler(Object target) {
      this.target = target;
    }

    public Object invoke(Object proxy, Method method, Object[] args) {
      return call(target, method.getName(), unnull(args));
    }
  }

  static public class MMOPattern {

    static public class Phrase extends MMOPattern implements IFieldsToList {

      public String phrase;

      public boolean quoted = false;

      public Phrase() {
      }

      public Phrase(String phrase, boolean quoted) {
        this.quoted = quoted;
        this.phrase = phrase;
      }

      public String toString() {
        return shortClassName(this) + "(" + phrase + ", " + quoted + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof Phrase))
          return false;
        Phrase __1 = (Phrase) o;
        return eq(phrase, __1.phrase) && eq(quoted, __1.quoted);
      }

      public int hashCode() {
        int h = -1905095975;
        h = boostHashCombine(h, _hashCode(phrase));
        h = boostHashCombine(h, _hashCode(quoted));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { phrase, quoted };
      }
    }

    static public class And extends MMOPattern implements IFieldsToList {

      public List<MMOPattern> l;

      public And() {
      }

      public And(List<MMOPattern> l) {
        this.l = l;
      }

      public String toString() {
        return shortClassName(this) + "(" + l + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof And))
          return false;
        And __2 = (And) o;
        return eq(l, __2.l);
      }

      public int hashCode() {
        int h = 65975;
        h = boostHashCombine(h, _hashCode(l));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { l };
      }
    }

    static public class Or extends MMOPattern implements IFieldsToList {

      public List<MMOPattern> l;

      public Or() {
      }

      public Or(List<MMOPattern> l) {
        this.l = l;
      }

      public String toString() {
        return shortClassName(this) + "(" + l + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof Or))
          return false;
        Or __3 = (Or) o;
        return eq(l, __3.l);
      }

      public int hashCode() {
        int h = 2563;
        h = boostHashCombine(h, _hashCode(l));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { l };
      }
    }

    static public class Not extends MMOPattern implements IFieldsToList {

      public MMOPattern p;

      public Not() {
      }

      public Not(MMOPattern p) {
        this.p = p;
      }

      public String toString() {
        return shortClassName(this) + "(" + p + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof Not))
          return false;
        Not __4 = (Not) o;
        return eq(p, __4.p);
      }

      public int hashCode() {
        int h = 78515;
        h = boostHashCombine(h, _hashCode(p));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { p };
      }
    }

    static public class Weighted extends MMOPattern implements IFieldsToList {

      static final public String _fieldOrder = "weight p";

      public double weight;

      public MMOPattern p;

      public Weighted() {
      }

      public Weighted(double weight, MMOPattern p) {
        this.p = p;
        this.weight = weight;
      }

      public String toString() {
        return shortClassName(this) + "(" + weight + ", " + p + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof Weighted))
          return false;
        Weighted __5 = (Weighted) o;
        return weight == __5.weight && eq(p, __5.p);
      }

      public int hashCode() {
        int h = -446368457;
        h = boostHashCombine(h, _hashCode(weight));
        h = boostHashCombine(h, _hashCode(p));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { weight, p };
      }
    }

    static public class StartOfLine extends MMOPattern implements IFieldsToList {

      public MMOPattern p;

      public StartOfLine() {
      }

      public StartOfLine(MMOPattern p) {
        this.p = p;
      }

      public String toString() {
        return shortClassName(this) + "(" + p + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof StartOfLine))
          return false;
        StartOfLine __6 = (StartOfLine) o;
        return eq(p, __6.p);
      }

      public int hashCode() {
        int h = -326863539;
        h = boostHashCombine(h, _hashCode(p));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { p };
      }
    }

    static public class EndOfLine extends MMOPattern implements IFieldsToList {

      public MMOPattern p;

      public EndOfLine() {
      }

      public EndOfLine(MMOPattern p) {
        this.p = p;
      }

      public String toString() {
        return shortClassName(this) + "(" + p + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof EndOfLine))
          return false;
        EndOfLine __7 = (EndOfLine) o;
        return eq(p, __7.p);
      }

      public int hashCode() {
        int h = -810372346;
        h = boostHashCombine(h, _hashCode(p));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { p };
      }
    }
  }

  static public class CompilerBot {

    static public boolean verbose = false;

    static public File compileSnippet(String snippetID) {
      return compileSnippet(snippetID, "");
    }

    static public Pair<File, String> compileSnippet2(String snippetID) {
      return compileSnippet2(snippetID, "");
    }

    static public File compileSnippet(String snippetID, String javaTarget) {
      return compileSnippet2(snippetID, javaTarget).a;
    }

    static public Pair<File, String> compileSnippet2(String snippetID, String javaTarget) {
      String transpiledSrc = getServerTranspiled2(snippetID);
      if (transpiledSrc == null)
        throw fail("Snippet not found or not public: " + snippetID);
      int i = transpiledSrc.indexOf('\n');
      String libs = transpiledSrc.substring(0, Math.max(0, i));
      if (verbose)
        print("Compiling snippet: " + snippetID + ". Libs: " + libs);
      transpiledSrc = transpiledSrc.substring(i + 1);
      return pair(compile(transpiledSrc, libs, javaTarget, snippetID), transpiledSrc);
    }

    static public File compile(String src) {
      return compile(src, "");
    }

    static public File compile(String src, String libs) {
      return compile(src, libs, null);
    }

    static public File compile(String src, String dehlibs, String javaTarget) {
      return compile(src, dehlibs, javaTarget, null);
    }

    static public File compile(String src, String dehlibs, String javaTarget, String progID) {
      if (verbose)
        print("Compiling " + l(src) + " chars");
      String md5 = md5(dehlibs + "\n" + src + "\n" + fsIOpt(progID));
      File jar = getJarFile(md5);
      if (jar == null || jar.length() <= 22) {
        List<String> mainClass = findMainClass(javaTok(src));
        boolean canRename = mainClass != null && useDummyMainClasses() && isSnippetID(progID) && !tok_classHasModifier(mainClass, "public");
        if (verbose)
          print("useRenaming: " + useDummyMainClasses() + ", canRename: " + canRename + ", progID: " + progID);
        javaCompileToJar_optionalRename(src, dehlibs, jar, canRename ? progID : null, progID);
      } else {
        if (verbose)
          print("Getting classes from cache (" + jar.getAbsolutePath() + ", " + jar.length() + " bytes)");
        touchFile(jar);
      }
      return jar;
    }

    static public File getJarFile(String md5) {
      assertTrue(isMD5(md5));
      String sub = "JavaX-Caches/#1002203/" + md5 + ".jar";
      File f = actualUserDir(sub);
      return fileExists(f) ? f : userDir(sub);
    }
  }

  static public class Pair<A, B> implements Comparable<Pair<A, B>> {

    public A a;

    public B b;

    public Pair() {
    }

    public Pair(A a, B b) {
      this.b = b;
      this.a = a;
    }

    public int hashCode() {
      return hashCodeFor(a) + 2 * hashCodeFor(b);
    }

    public boolean equals(Object o) {
      if (o == this)
        return true;
      if (!(o instanceof Pair))
        return false;
      Pair t = (Pair) o;
      return eq(a, t.a) && eq(b, t.b);
    }

    public String toString() {
      return "<" + a + ", " + b + ">";
    }

    public int compareTo(Pair<A, B> p) {
      if (p == null)
        return 1;
      int i = ((Comparable<A>) a).compareTo(p.a);
      if (i != 0)
        return i;
      return ((Comparable<B>) b).compareTo(p.b);
    }
  }

  static public class HTMLFramer1 {

    public String title;

    public List<NavItem> navItems = new ArrayList();

    public List<String> contents = new ArrayList();

    public LinkedHashSet<String> headElements = new LinkedHashSet();

    public boolean navBeforeTitle = false;

    public List<Runnable> willRender = new ArrayList();

    static public class NavItem implements IFieldsToList {

      static final public String _fieldOrder = "link html targetBlank";

      public String link;

      public String html;

      public NavItem() {
      }

      public NavItem(String link, String html) {
        this.html = html;
        this.link = link;
      }

      public String toString() {
        return shortClassName(this) + "(" + link + ", " + html + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof NavItem))
          return false;
        NavItem __1 = (NavItem) o;
        return eq(link, __1.link) && eq(html, __1.html);
      }

      public int hashCode() {
        int h = -900864330;
        h = boostHashCombine(h, _hashCode(link));
        h = boostHashCombine(h, _hashCode(html));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { link, html };
      }

      public boolean targetBlank = false;
    }

    transient public IF0<String> render;

    public String render() {
      return render != null ? render.get() : render_base();
    }

    final public String render_fallback(IF0<String> _f) {
      return _f != null ? _f.get() : render_base();
    }

    public String render_base() {
      callFAll(willRender);
      return hhtml(hhead(htitle(title) + lines(headElements)) + hbody((navBeforeTitle ? renderNav() + renderTitle() : renderTitle() + renderNav()) + lines(contents)));
    }

    transient public IF0<String> renderTitle;

    public String renderTitle() {
      return renderTitle != null ? renderTitle.get() : renderTitle_base();
    }

    final public String renderTitle_fallback(IF0<String> _f) {
      return _f != null ? _f.get() : renderTitle_base();
    }

    public String renderTitle_base() {
      return h1(htmlEncode2(title));
    }

    transient public IF0<String> renderNav;

    public String renderNav() {
      return renderNav != null ? renderNav.get() : renderNav_base();
    }

    final public String renderNav_fallback(IF0<String> _f) {
      return _f != null ? _f.get() : renderNav_base();
    }

    public String renderNav_base() {
      if (empty(navItems))
        return "";
      return p(joinWithVBar(map(navItems, ni -> ahref_possiblyTargetBlank(ni.link, ni.html, ni.targetBlank))));
    }

    public void addNavItem(String html) {
      navItems.add(new NavItem(null, html));
    }

    public void addNavItem(String link, String html, Object... __) {
      navItems.add(setAll(new NavItem(link, html), filterParams(__, "targetBlank")));
    }

    public void addInHead(Object html) {
      headElements.add(str(html));
    }

    public void add(Object html) {
      addIfNempty(contents, strOrEmpty(html));
    }
  }

  static public class JavaXClassLoader extends URLClassLoader {

    public String progID;

    public List<File> files;

    public Set<String> triedToLoad = synchroSet();

    public Set<Class> loadedClasses = synchroSet();

    public boolean retired = false;

    public Object retiredMarker;

    public JavaXClassLoader(String progID, List<File> files) {
      this(progID, files, getSystemClassLoader());
    }

    public JavaXClassLoader(String progID, List<File> files, ClassLoader parent) {
      super(new URL[0], parent);
      this.progID = progID;
      this.files = files;
      {
        try {
          for (File f : files) addURL(f.toURI().toURL());
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }
      fixACCInClassLoader(this);
    }

    public Class<?> findClass(String name) throws ClassNotFoundException {
      boolean triedBefore = !triedToLoad.add(name);
      try {
        Class<?> c = super.findClass(name);
        loadedClasses.add(c);
        if (eq(name, "main"))
          callOpt(javax(), "registerAMainClass", c);
        return c;
      } catch (ClassNotFoundException e) {
        throw new ClassNotFoundException("Class " + name + " not found in " + joinWithComma(map("f2s", files)) + " (progID=" + progID + ")" + (triedBefore ? ", tried to load before" : ""), e);
      }
    }

    public String toString() {
      return "JavaXClassLoader[" + systemHashCodeHex(this) + "] - " + progID;
    }
  }

  static public class JavaXClassLoaderWithParent extends JavaXClassLoader {

    public ClassLoader virtualParent;

    public JavaXClassLoaderWithParent(String progID, List<File> files, ClassLoader virtualParent) {
      super(progID, files);
      this.virtualParent = virtualParent;
    }

    public Class<?> findClass(String name) throws ClassNotFoundException {
      if (virtualParent != null && !eq(name, "main") && !name.startsWith("main$")) {
        try {
          return virtualParent.loadClass(name);
        } catch (ClassNotFoundException e) {
        }
      }
      return super.findClass(name);
    }
  }

  static public class CancelPoint implements AutoCloseable {

    volatile public boolean closed = false;

    public void close() {
      closed = true;
    }
  }

  static public class MRUCache<A, B> extends LinkedHashMap<A, B> {

    public int maxSize = 10;

    public MRUCache() {
    }

    public MRUCache(int maxSize) {
      this.maxSize = maxSize;
    }

    public boolean removeEldestEntry(Map.Entry eldest) {
      return size() > maxSize;
    }

    public Object _serialize() {
      return ll(maxSize, cloneLinkedHashMap(this));
    }

    static public MRUCache _deserialize(List l) {
      MRUCache m = new MRUCache();
      m.maxSize = (int) first(l);
      m.putAll((LinkedHashMap) second(l));
      return m;
    }
  }

  static public class TransferableImage implements Transferable {

    public Image i;

    public TransferableImage(Image i) {
      this.i = i;
    }

    public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
      if (flavor.equals(DataFlavor.imageFlavor) && i != null) {
        return i;
      } else {
        throw new UnsupportedFlavorException(flavor);
      }
    }

    public DataFlavor[] getTransferDataFlavors() {
      DataFlavor[] flavors = new DataFlavor[1];
      flavors[0] = DataFlavor.imageFlavor;
      return flavors;
    }

    public boolean isDataFlavorSupported(DataFlavor flavor) {
      DataFlavor[] flavors = getTransferDataFlavors();
      for (int i = 0; i < flavors.length; i++) {
        if (flavor.equals(flavors[i])) {
          return true;
        }
      }
      return false;
    }
  }

  static public class FieldIndicator implements IFieldsToList {

    public String field;

    public boolean forward = false;

    public FieldIndicator() {
    }

    public FieldIndicator(String field, boolean forward) {
      this.forward = forward;
      this.field = field;
    }

    public String toString() {
      return shortClassName(this) + "(" + field + ", " + forward + ")";
    }

    public boolean equals(Object o) {
      if (!(o instanceof FieldIndicator))
        return false;
      FieldIndicator __1 = (FieldIndicator) o;
      return eq(field, __1.field) && eq(forward, __1.forward);
    }

    public int hashCode() {
      int h = 698778197;
      h = boostHashCombine(h, _hashCode(field));
      h = boostHashCombine(h, _hashCode(forward));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { field, forward };
    }
  }

  static public class JavaXClassLoaderWithParent2 extends JavaXClassLoader {

    public ClassLoader virtualParent;

    public List<String> classesToSkip;

    public JavaXClassLoaderWithParent2(String progID, List<File> files, ClassLoader virtualParent, List<String> classesToSkip) {
      super(progID, files);
      this.virtualParent = virtualParent;
      this.classesToSkip = classesToSkip;
    }

    public Class<?> findClass(String name) throws ClassNotFoundException {
      if (shouldDelegate(name)) {
        Class<?> c = virtualParent.loadClass(name);
        if (c != null)
          return c;
      }
      return super.findClass(name);
    }

    public boolean shouldDelegate(String name) {
      for (String s : classesToSkip) if (eq(name, s) || startsWith(name, s + "$"))
        return true;
      return false;
    }
  }

  static public class ReverseChain<A> implements Iterable<A> {

    public A element;

    public ReverseChain<A> prev;

    public int size;

    public ReverseChain() {
    }

    public ReverseChain(ReverseChain<A> prev, A element) {
      this.element = element;
      this.prev = prev;
      if (prev == null)
        size = 1;
      else {
        prev.check();
        size = prev.size + 1;
      }
    }

    public void check() {
      if (size < 1)
        throw fail("You called the ReverseChain default constructor. Don't do that");
    }

    public String toString() {
      return str(toList());
    }

    public ArrayList<A> toList() {
      check();
      ArrayList<A> l = emptyList(size);
      for (int i = 0; i < size; i++) l.add(null);
      int i = size;
      ReverseChain<A> c = this;
      while (c != null) {
        l.set(--i, c.element);
        c = c.prev;
      }
      return l;
    }

    public Iterator<A> iterator() {
      return toList().iterator();
    }
  }

  static public class MultiSetMap<A, B> {

    public Map<A, Set<B>> data = new HashMap<A, Set<B>>();

    public int size;

    public MultiSetMap() {
    }

    public MultiSetMap(boolean useTreeMap) {
      if (useTreeMap)
        data = new TreeMap();
    }

    public MultiSetMap(MultiSetMap<A, B> map) {
      putAll(map);
    }

    public MultiSetMap(Map<A, Set<B>> data) {
      this.data = data;
    }

    public boolean put(A key, B value) {
      synchronized (data) {
        Set<B> set = data.get(key);
        if (set == null)
          data.put(key, set = _makeEmptySet());
        if (!set.add(value))
          return false;
        {
          ++size;
          return true;
        }
      }
    }

    public boolean add(A key, B value) {
      return put(key, value);
    }

    public void addAll(A key, Collection<B> values) {
      synchronized (data) {
        putAll(key, values);
      }
    }

    public void addAllIfNotThere(A key, Collection<B> values) {
      synchronized (data) {
        for (B value : values) setPut(key, value);
      }
    }

    public void setPut(A key, B value) {
      synchronized (data) {
        if (!containsPair(key, value))
          put(key, value);
      }
    }

    public boolean containsPair(A key, B value) {
      synchronized (data) {
        return get(key).contains(value);
      }
    }

    public void putAll(A key, Collection<B> values) {
      synchronized (data) {
        for (B value : values) put(key, value);
      }
    }

    public void removeAll(A key, Collection<B> values) {
      synchronized (data) {
        for (B value : values) remove(key, value);
      }
    }

    public Set<B> get(A key) {
      synchronized (data) {
        Set<B> set = data.get(key);
        return set == null ? Collections.<B>emptySet() : set;
      }
    }

    public Set<B> getOpt(A key) {
      synchronized (data) {
        return data.get(key);
      }
    }

    public Set<B> getActual(A key) {
      synchronized (data) {
        Set<B> set = data.get(key);
        if (set == null)
          data.put(key, set = _makeEmptySet());
        return set;
      }
    }

    public void clean(A key) {
      synchronized (data) {
        Set<B> list = data.get(key);
        if (list != null && list.isEmpty())
          data.remove(key);
      }
    }

    public Set<A> keySet() {
      synchronized (data) {
        return data.keySet();
      }
    }

    public Set<A> keys() {
      synchronized (data) {
        return data.keySet();
      }
    }

    public void remove(A key) {
      synchronized (data) {
        size -= l(data.get(key));
        data.remove(key);
      }
    }

    public void remove(A key, B value) {
      synchronized (data) {
        Set<B> set = data.get(key);
        if (set != null) {
          if (set.remove(value)) {
            --size;
            if (set.isEmpty())
              data.remove(key);
          }
        }
      }
    }

    public void clear() {
      synchronized (data) {
        data.clear();
        size = 0;
      }
    }

    public boolean containsKey(A key) {
      synchronized (data) {
        return data.containsKey(key);
      }
    }

    public B getFirst(A key) {
      synchronized (data) {
        return first(get(key));
      }
    }

    public void addAll(MultiSetMap<A, B> map) {
      putAll(map);
    }

    public void putAll(MultiSetMap<A, B> map) {
      synchronized (data) {
        for (A key : map.keySet()) putAll(key, map.get(key));
      }
    }

    public void putAll(Map<A, B> map) {
      synchronized (data) {
        if (map != null)
          for (Map.Entry<A, B> e : map.entrySet()) put(e.getKey(), e.getValue());
      }
    }

    public int keysSize() {
      synchronized (data) {
        return l(data);
      }
    }

    public int size() {
      synchronized (data) {
        return size;
      }
    }

    public int getSize(A key) {
      return l(data.get(key));
    }

    public int count(A key) {
      return getSize(key);
    }

    public Set<A> reverseGet(B b) {
      synchronized (data) {
        Set<A> l = new HashSet();
        for (A key : data.keySet()) if (data.get(key).contains(b))
          l.add(key);
        return l;
      }
    }

    public Map<A, Set<B>> asMap() {
      synchronized (data) {
        return cloneMap(data);
      }
    }

    public boolean isEmpty() {
      synchronized (data) {
        return data.isEmpty();
      }
    }

    public Set<B> _makeEmptySet() {
      return new HashSet();
    }

    public Collection<Set<B>> allLists() {
      synchronized (data) {
        return new HashSet(data.values());
      }
    }

    public List<B> allValues() {
      return concatLists(values(data));
    }

    public Object mutex() {
      return data;
    }

    public String toString() {
      return "mm" + str(data);
    }

    public Pair<A, B> firstEntry() {
      if (empty(data))
        return null;
      Map.Entry<A, Set<B>> entry = data.entrySet().iterator().next();
      return pair(entry.getKey(), first(entry.getValue()));
    }
  }

  static public class JavaXHyperlinker {

    public boolean targetBlank = false;

    public Map<String, String> shortFor = litmap("BigInt", "BIgInteger", "$1", "m.unq(0)", "$2", "m.unq(1)", "$3", "m.unq(2)", "LS", "List<String>", "sclass", "static class", "asclass", "abstract static class", "svoid", "static void", "SS", "Map<String, String>", "S", "String", "ret", "return", "L", "List", "Cl", "Collection", "O", "Object", "sO", "static Object", "sS", "static String", "fO", "final Object", "fS", "final String", "sS", "static String", "sbool", "static boolean", "fbool", "final boolean", "bool", "boolean", "Int", "Integer", "cast", "casting to the type required on the left-hand side", "°", "()", "ItIt", "IterableIterator", "ES", "Ext<S> (string plus extended information)", "CloseableItIt", "CloseableIterableIterator", "LPairS", "List<Pair<String>>", "ISegmenter", "IF1<BufferedImage, L<Rect>>");

    public String explFunc = "anonymous function declaration (similar to Java 8 lambdas)";

    public String explPNoconsole = "Main program including Substance L&F, started in non-AWT thread, hiding the console";

    public Map<String, String> tokenExplanations = litmap("~.", "short for accessing a field or calling a method by reflection", "beaConcept", "a BEA concept is just a concept (database-enabled Java class) derived from BEAObject (the AGI base class)", "== null ?:", "short for: == null ? null :", "p-exp {", "main program with automatic upgrade", "mapLike", "a function that takes a global function name as first argument and can be called like this: <mapLikeFunction> <otherFunction>(...)", "mapMethodLike", "a function that takes a method or field name as first argument and can be called like this: <mapMethodLikeFunction> <methodOrFieldName>(...)", "func(", explFunc, "func{", explFunc, "voidfunc", "anonymous function declaration without return value (similar to Java 8 lambdas)", "ctex", "ctex rethrows exceptions as RuntimeExceptions so you don't have to declare them", "p {", "short for: public static void main(String[] args)", "p-experiment {", "Main program with a nice big console & auto-restart", "p-substance {", "Main program including Substance L&F, started in AWT thread", "p-subst {", "Main program including Substance L&F, started in non-AWT thread", "p-noconsole {", explPNoconsole, "pn {", explPNoconsole, "answer {", "Answer function - static S answer(S s) { new Matches m; ...; null; }", "time {", "Run the code block and print how long it took", "cprint {", "A module with default class name derived from DynPrintLog", "semiauto {", "In a semiauto block, JavaX automatically adds a ; to (almost) every line", "autosemi {", "In an autosemi block, JavaX automatically adds a ; to (almost) every line", "Clusters", "Clusters<A> is short for Map<A, Collection<A>>", "temp", "temp is like try (...) extending to the end of the current block", "pcall {", "protected call - try { ... } catch { print exception }", "r {", "r { ... } is short for: new Runnable() { public void run() { ... } }", "runnable {", "runnable { ... } is short for: new Runnable() { public void run() { ... } }", "pcall-short {", "protected call, shorter output - try { ... } catch { printShortException }", "LPair<", "LPair<...> is short for: L<Pair<...>>", "visualize {", "Visualisation method for an OS module; returns a Swing component", "visualize as", "define a visualization for the module", "enhanceFrame {", "Method that changes properties of an OS module's frame", "run {", "short for: public void run()", "start {", "Method that is run when an OS module is loaded", "enter {", "Methods in a module should be marked 'enter' for bookkeeping", "vf<", "reference to function as voidfunc", "compact module", "try to save memory by reusing code between modules", "cmodule", "cmodule = compact module for Stefan's OS. compact = try to save memory by reusing code between modules", "cmodule2", "cmodule2 = compact module for Stefan's OS (newer version). compact = try to save memory by reusing code between modules", "rThread {", "Runnable in a new thread", "shit(", "short for: return with print", "shit:", "short for: return with print", ":=", "the := operator translates to a simple comma, but converts an identifier on its left-hand side into a string", "noeq", "don't auto-generate equals+hashCode methods", "for single (", "for single is for ping + singletonUnlessNull", "selfType", "selfType is replaced with the enclosing class's name", "runnable class", "short for: class X implementing Runnable { run { ... }}");

    public Map<String, String> sc, sf;

    public StringTree2<String> tokenExplanationsTree;

    public JavaXHyperlinker() {
      clearCaches();
      tokenExplanationsTree = stringTree2_javaTok(tokenExplanations);
    }

    public String codeToHTML(String code) {
      return codeToHTML(code, true);
    }

    public String codeToHTML(String code, boolean real) {
      List<String> tok = javaTok(code);
      Map<Integer, String> links = new HashMap();
      Map<Integer, String> explanations = new HashMap();
      putMultipleKeys(explanations, allPlus(4, jfindAll(tok, "void <id> q {")), "Function will execute in module's queue");
      Matches m = new Matches();
      for (int i = 1; i < l(tok); i += 2) {
        String t = tok.get(i);
        String prev = get(tok, i - 2), prevPrev = get(tok, i - 4);
        String next = get(tok, i + 2);
        String sfID = sf.get(t);
        if (startsWith(t, "lambda", m) && isInteger(m.rest()) && isIdentifier(next))
          explanations.put(i, ("lambda reference to a " + (m.rest()) + "-argument function"));
        if (eq(t, "methodLambda0") && isIdentifier(next))
          explanations.put(i, ("short for: x -> x." + next + "() (with a fresh variable instead of x)"));
        if (eq(t, "swappable") && isIdentifier(next))
          explanations.put(i, "swappable functions can be exchanged per object instance");
        if (eq(t, "autoDispose") && isIdentifier(next))
          explanations.put(i, "autoDispose adds a cleanMeUp method that properly disposes of this variable");
        if (eq(t, "virtual") && isIdentifier(next))
          explanations.put(i, "\"virtual\" represents a type that is not visible in this realm, so it is transpiled to just Object");
        if (eq(t, "concept") && isIdentifier(next))
          explanations.put(i, "A concept is like a Java class, but persistable");
        if (eq(t, "flexeq") && isIdentifier(next))
          explanations.put(i, "flexeq is a fix for records inside parameterized classes");
        if (eq(t, "switchable") && isIdentifier(next))
          explanations.put(i, "A field that can be changed through the module's popup menu");
        if (eq(t, "embedded") && isIdentifier(next))
          explanations.put(i, "\"embedded\" allows you to put a function where they would not normally be allowed");
        if (eq(t, "visual") && isIdentifier(next))
          explanations.put(i, "short definition of the visualize() function");
        if (eq(t, "dm_q") && isIdentifier(next))
          explanations.put(i, "Function reference delegating to module queue");
        if (eq(t, "!") && isIdentifier(prev) && neq(next, "="))
          explanations.put(i, "! is short for .get()");
        if (eq(t, "#") && isIdentifier(next))
          explanations.put(i, "#<name> makes an identifier local to the scope");
        if (eq(t, "f") && isIdentifier(next))
          explanations.put(i, "f <name> references a static function in the main class");
        if (eq(t, "r") && isIdentifier(next))
          explanations.put(i, "short for: r { " + next + "() }");
        if (eqOneOf(t, "rThread", "rThreadEnter") && isIdentifier(next))
          explanations.put(i, "short for: " + t + " { " + next + "() }");
        if (eq(t, "dispose") && isIdentifier(next))
          explanations.put(i, "short for: cleanUp(" + next + "); " + next + " = null;");
        if (eq(t, "*") && eq(next, "("))
          explanations.put(i, "Short syntax for a constructor declaration");
        if (eq(t, "thread") && eq(next, "{"))
          explanations.put(i, "Start a new thread with the following code");
        if (eq(t, "module") && isIdentifier(next))
          explanations.put(i, "A module is a class that can be loaded in Stefan's OS");
        if (eq(t, "record") && isIdentifier(next))
          explanations.put(i, "A record is a value-based class");
        if (eq(t, "srecord") && isIdentifier(next))
          explanations.put(i, "An srecord is a static value-based class");
        if (eqOneOf(t, "cached", "simplyCached") && isIdentifier(next))
          explanations.put(i, "A function that caches its return value");
        if (eq(t, "thread") && isQuoted(next))
          explanations.put(i, "Start a new thread with the following name & code");
        if (eq(t, "if") && isQuoted(next)) {
          try {
            List<String> tok2 = tok_subListWithoutBorderNTokens(tok, i, i + 3);
            tok_expandIfQuoted(tok2);
            explanations.put(i, "short for: " + join(tok2));
          } catch (Throwable __e) {
            _handleException(__e);
          }
        }
        if (eq(t, "html") && eq(next, "{"))
          explanations.put(i, "short for: static Object html(String uri, final Map<String, String> params) ctex {");
        if (eq(t, "try") && eq(next, "answer"))
          doublePut(explanations, i, i + 2, "\"try answer\" returns the expression if it isn't null or empty");
        if (isSingleQuoteIdentifier(t))
          explanations.put(i, "string constant, " + quote(fromSingleQuoteIdentifier(t)));
        if (eq(t, "event") && isIdentifier(next))
          explanations.put(i, "declare a function called " + next + "() plus helpers for adding listeners");
        if (eqOneOf(t, "null", "false", "true", "this") && eq(next, ";") && tok_tokenBeforeLonelyReturnValue(tok, i - 2))
          doublePut(explanations, i, i + 2, "short for: return " + t + ";");
        String e = shortFor.get(t);
        if (e != null)
          mapPut(explanations, i, "short for: " + e);
        if (!explanations.containsKey(i) && sfID != null) {
          if (eqOneOf(prev, "f", "r", "rThread") || startsWith(prev, "lambda") || isIdentifier(next) && eqGet(tok, i + 4, "(") || eqOneOf(next, "(", "°") && (neq(prev, ".") || eq(prevPrev, "main") && neq(get(tok, i - 6), ".")) || eq(prev, "{") && eq(next, "}") && eq(prevPrev, "postProcess") || eq(prev, ":") && eq(prevPrev, ":"))
            links.put(i, sfID);
        }
        List<String> fewTokens = codeTokens(subList(tok, i - 1, i + 2 * 5));
        Pair<String, Integer> p = stringTreeLeafValue2(tokenExplanationsTree, fewTokens);
        if (p != null) {
          int lastCodeToken = i + p.b * 2 - 2;
          if (eq(get(tok, lastCodeToken), "{"))
            lastCodeToken -= 2;
          mapPutInRange(explanations, i, lastCodeToken + 1, p.a);
        }
        if (isQuoted(t) && eq(prev, "(") && isIdentifier(prevPrev) && isMechFunction(prevPrev))
          mapPut(links, i, neatMechListURL(unquote(t)));
        String id = sc.get(t);
        if (id != null)
          links.put(i, id);
      }
      StringBuilder out = new StringBuilder();
      Map<String, String> titles = getSnippetTitles(filter(__60 -> isSnippetID(__60), values(links)));
      for (int i = 0; i < l(tok); i++) {
        String t = tok.get(i), id = links.get(i), ex = explanations.get(i);
        if (empty(t))
          continue;
        if (t.startsWith("[[") && t.endsWith("]]")) {
          String explanation = "[[...]] denotes a multi-line string constant (as in Lua)";
          out.append(dottedSpan("[[", explanation));
          String inner = htmlencode(dropPrefix("[[", dropSuffix("]]", t)));
          out.append(span(inner, "style", "background-color: #77FF77"));
          out.append(dottedSpan("]]", explanation));
          continue;
        }
        if (t.startsWith("[=[") && t.endsWith("]=]")) {
          String explanation = "[=[...]=] denotes a multi-line string constant (as in Lua)";
          out.append(dottedSpan("[=[", explanation));
          String inner = htmlencode(dropPrefix("[=[", dropSuffix("]=]", t)));
          out.append(span(inner, "style", "background-color: #77FF77"));
          out.append(dottedSpan("]=]", explanation));
          continue;
        }
        String enc = htmlencode(t);
        out.append(id != null ? ahref(makeLink(real, id), enc, "title", isSnippetID(id) ? titles.get(fsI(id)) : ex, "style", "text-decoration: none; color: black; border-bottom: dotted 1px", "target", targetBlank ? "_blank" : null) : ex != null ? dottedSpan(enc, ex) : enc);
      }
      String html = str(out);
      html = dynamize_noEncode(html);
      return html;
    }

    public String makeLink(boolean real, String id) {
      if (isURL(id))
        return id;
      if (real)
        return longSnippetLink(id);
      return "/" + psI(id);
    }

    public void clearCaches() {
      stdFunctions_clearCache();
      sc = standardClassesMap();
      sf = stdFunctions_cached();
    }

    public boolean isMechFunction(String s) {
      return startsWithOneOf(s, "mech", "mL");
    }
  }

  static public interface IContentsIndexedList<A> extends List<A> {

    public int[] indicesOf(Object o);
  }

  abstract static public class RandomAccessAbstractList<A> extends AbstractList<A> implements RandomAccess {
  }

  static public class Not<A> implements IFieldsToList, Transformable, Visitable {

    public A a;

    public Not() {
    }

    public Not(A a) {
      this.a = a;
    }

    public String toString() {
      return shortClassName(this) + "(" + a + ")";
    }

    public boolean equals(Object o) {
      if (!(o instanceof Not))
        return false;
      Not __0 = (Not) o;
      return eq(a, __0.a);
    }

    public int hashCode() {
      int h = 78515;
      h = boostHashCombine(h, _hashCode(a));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { a };
    }

    public Object transformUsing(IF1 f) {
      return new Not((A) f.get(a));
    }

    public void visitUsing(IVF1 f) {
      f.get(a);
    }

    public Boolean get(Object o) {
      return not((Boolean) callF(a, o));
    }
  }

  static public interface IHasGlobalID {

    public GlobalID globalID();
  }

  static public class QuickException extends RuntimeException {

    public Throwable fillInStackTrace() {
      return this;
    }

    public QuickException() {
    }

    public QuickException(Throwable e) {
      super(e);
    }

    public QuickException(String msg) {
      super(msg);
    }

    public QuickException(String msg, Throwable e) {
      super(msg, e);
    }
  }

  static public interface IContentsIndexedList2<A> extends List<A> {

    public TreeSet<HasIndex> indicesOf_treeSetOfHasIndex(Object o);
  }

  static public class Worker extends Concept {

    public String loginName, displayName;

    public boolean available = false;

    public long lastOnline;

    public Ref<AbstractBotImage> image = new Ref();

    static public String _fieldOrder = "loginName displayName";

    public String renderAsHTML() {
      return htmlEncode2(loginName + " (display name: " + displayName + ")");
    }
  }

  abstract static public class DynNewBot2 extends DynPrintLogAndEnabled {

    public void setEleu(Object eleu) {
      mainBot = eleu;
    }

    public int maxRefsToShow = 5;

    volatile public long requestsServed;

    transient public String templateID = "#1029809";

    static public String cssID = "#1029808";

    transient public String botName = "DynNewBot2";

    transient public String heading = "DynNewBot2";

    transient public String adminName = "DynNewBot2 Admin";

    transient public String botImageID = "#1102935";

    transient public String userImageID = "#1102803";

    transient public String chatHeaderImageID = "#1102802";

    transient public String timeZone = ukTimeZone_string();

    transient public String baseLink = "";

    transient public boolean newDesign = true;

    transient public boolean ariaLiveTrick = false;

    transient public boolean ariaLiveTrick2 = true;

    public class WorkerChat {

      public int workerLongPollTick = 200;

      public int workerLongPollMaxWait = 1000 * 30;

      public long lastWorkerRequested;

      public String mainAdminLink = "/";

      public Object html(DynNewBot2.Req req) {
        Map<String, String> params = req.params;
        String uri = req.uri, uri2 = appendSlash(uri);
        boolean requestAuthed = req.auth != null;
        Conversation conv = req.conv;
        if (startsWith(uri2, "/worker/")) {
          if (!req.webRequest.isHttps())
            return subBot_serveRedirect("https://" + req.webRequest.domain() + req.uri + htmlQuery(req.params));
          if (!requestAuthed)
            return serveAuthForm(params.get("uri"));
          if (nempty(params.get("turnBotOn")))
            conv.turnBotOn();
          return serveWorkerPage(req);
        }
        return null;
      }

      public String serveWorkerPage(DynNewBot2.Req req) {
        AuthedDialogID auth = req.auth;
        Conversation conv = req.conv;
        String uri = req.uri;
        Map<String, String> params = req.params;
        String cookie = conv.cookie;
        String uri2 = afterLastSlash(uri);
        if (eq(uri2, "availableWorkers"))
          return "Available workers: " + or2(joinWithComma(map(workersAvailable(), w -> w.renderAsHTML())), "-");
        if (nempty(params.get("workerLogOut")))
          cset(auth, "loggedIn", null);
        if (auth.loggedIn != null && nempty(params.get("workerAvailableBox")))
          if (cset_trueIfChanged(auth.loggedIn, "available", nempty(params.get("workerAvailable"))))
            noteConversationChange();
        if (nempty(params.get("acceptConversation"))) {
          if (conv.worker == null) {
            cset(conv, "worker", auth.loggedIn);
            conv.turnBotOff();
          }
        }
        String loginID = params.get("workerLogIn");
        if (nempty(loginID))
          cset(auth, "loggedIn", getConcept(Worker.class, parseLong(loginID)));
        Map map = prependEmptyOptionForHSelect(mapToOrderedMap(conceptsSortedByFieldCI(Worker.class, "loginName"), w -> pair(w.id, w.loginName)));
        if (auth.loggedIn == null)
          return hsansserif() + p("You are not logged in as a worker") + hpostform("Log in as: " + hselect("workerLogIn", map, conceptID(auth.loggedIn)) + " " + hsubmit("OK"), "action", botMod().baseLink + "/worker");
        if (eq(uri2, "conversation")) {
          if (conv == null)
            return "Conversation not found";
          String onOffURL = botMod().baseLink + "/worker/botOnOff" + hquery("cookie", cookie) + "&on=";
          return hsansserif() + loadJQuery() + hhidden("cookie", cookie) + hpostform(hhidden("cookie", cookie) + p(renderBotStatus(conv)) + p(conv.botOn ? hsubmit("Accept conversation", "name", "acceptConversation") : hsubmit("Turn bot back on", "name", "turnBotOn")), "action", botMod().baseLink + "/worker/innerFrameSet", "target", "innerFrameSet") + hscriptsrc(botMod().baseLink + "/script" + hquery("workerMode", 1, "cookie", conv.cookie));
        }
        if (eq(uri2, "conversations")) {
          cset(auth.loggedIn, "lastOnline", now());
          boolean poll = eq("1", params.get("poll"));
          String content = "";
          if (poll) {
            long seenChange = parseLong(params.get("lastChange"));
            vmBus_send("chatBot_startingWorkerPoll", mc(), conv);
            long start = sysNow();
            List msgs;
            boolean first = true;
            while (licensed() && sysNow() < start + workerLongPollMaxWait && lastConversationChange == seenChange) sleep(workerLongPollTick);
            printVars_str("lastWorkerRequested", lastWorkerRequested, "seenChange", seenChange);
            if (lastWorkerRequested > seenChange)
              content = hscript("\r\n            window.parent.parent.frames[0].sendDesktopNotification(\"A worker is requested!\", { action: function() { window.focus(); } });\r\n            window.parent.parent.frames[0].playWorkerRequestedSound();\r\n          ");
          }
          long pingThreshold = now() - activeConversationTimeout();
          List<Conversation> convos = sortByCalculatedFieldDesc(c -> c.lastMsgTime(), conceptsWithFieldGreaterThan(Conversation.class, "lastPing", pingThreshold));
          content += hhiddenWithID("lastConversationChange", lastConversationChange) + tag("table", hsimpletableheader("IP", "Country", "Bot/worker status", "Last change", "Last messages") + mapToLines(convos, c -> {
            List<Msg> lastMsgs = lastTwo(c.msgs);
            String style = c == conv ? "background: #90EE90" : null;
            String convLink = botMod().baseLink + "/worker/innerFrameSet" + hquery("cookie", c.cookie);
            return tag("tr", td(ahref(convLink, c.ip, "target", "innerFrameSet")) + td(getCountry(c)) + td(renderBotStatus(c)) + td(renderHowLongAgo(c.lastMsgTime())) + td(ahref(convLink, hparagraphs(lambdaMap(__102 -> renderMsgForWorkerChat(__102), lastMsgs)), "target", "innerFrameSet", "style", "text-decoration: none")), "style", style);
          }), "class", "responstable");
          if (poll)
            return content;
          String incrementalURL = botMod().baseLink + "/worker/conversations?poll=1&lastChange=";
          return hhtml(hhead(hsansserif() + loadJQuery() + hscript_clickableRows()) + hbody(h3(botName) + hpostform("Logged in as " + htmlEncode2(auth.loggedIn.loginName) + " (display name: " + htmlEncode2(auth.loggedIn.displayName) + ")" + hhidden("workerAvailableBox", 1) + " &nbsp; " + hcheckboxWithText("workerAvailable", "I am available", auth.loggedIn.available, "onclick", "form.submit()") + " &nbsp; " + hsubmit("Log out", "name", "workerLogOut"), "target", "innerFrameSet", "action", botMod().baseLink + "/worker/innerFrameSet") + p("Available workers: " + b(or2(joinWithComma(map(workersAvailable(), w -> w.displayName)), "none"))) + h3("Active conversations") + hcss_responstable() + hdivWithID("contentArea", content) + hscript("\r\n          function poll_start() {\r\n            var lastChange = $(\"#lastConversationChange\").val();\r\n            if (!lastChange)\r\n              setTimeout(poll_start, 1000);\r\n            else {\r\n              var url = \"#INCREMENTALURL#\" + lastChange;\r\n              console.log(\"Loading \" + url);\r\n              $.get(url, function(src) {\r\n                if (src.match(/^ERROR/)) console.log(src);\r\n                else {\r\n                  console.log(\"Loaded \" + src.length + \" chars\");\r\n                  $(\"#contentArea\").html(src);\r\n                }\r\n                setTimeout(poll_start, 1000);\r\n              }, 'text')\r\n                .fail(function() {\r\n                  console.log(\"Rescheduling after fail\");\r\n                  setTimeout(poll_start, 1000);\r\n                });\r\n            }\r\n          }\r\n          poll_start();\r\n        ".replace("#INCREMENTALURL#", incrementalURL))));
        }
        if (eq(uri2, "notificationArea"))
          return hhtml(hhead(hsansserif() + loadJQuery()) + hbody(hdesktopNotifications() + div(small(span(hbutton("CLICK HERE to enable notification sounds!"), "id", "enableSoundsBtn") + " | " + span("", "id", "notiStatus")), "style", "float: right") + hscript("\r\n          function enableSounds() {\r\n            document.removeEventListener('click', enableSounds);\r\n            $(\"#enableSoundsBtn\").html(\"Notification sounds enabled\");\r\n          }\r\n          document.addEventListener('click', enableSounds);\r\n          \r\n          if (window.workerRequestedSound == null) {\r\n            console.log(\"Loading worker requested sound\");\r\n            window.workerRequestedSound = new Audio(\"https://botcompany.de/files/1400404/worker-requested.mp3\");\r\n          }\r\n          \r\n          function playWorkerRequestedSound() {\r\n            console.log(\"Playing worker requested sound\");\r\n            window.workerRequestedSound.play();\r\n          }\r\n          window.playWorkerRequestedSound = playWorkerRequestedSound;\r\n\r\n        ")));
        if (eq(uri2, "innerFrameSet"))
          return hhtml(hhead_title("Worker Chat [" + auth.loggedIn.loginName + "]") + hframeset_cols("*,*", tag("frame", "", "name", "conversations", "src", botMod().baseLink + "/worker/conversations" + hquery("cookie", cookie)) + tag("frame", "", "name", "conversation", "src", conv == null ? null : botMod().baseLink + "/worker/conversation" + hquery("cookie", cookie))));
        return hhtml(hhead_title("Worker Chat [" + auth.loggedIn.loginName + "]") + hframeset_rows("50,*", tag("frame", "", "name", "notificationArea", "src", botMod().baseLink + "/worker/notificationArea") + tag("frame", "", "name", "innerFrameSet", "src", conv == null ? null : botMod().baseLink + "/worker/innerFrameSet" + hquery("cookie", cookie))));
      }

      public String renderMsgForWorkerChat(Msg msg) {
        return (msg.fromWorker != null ? htmlEncode2(msg.fromWorker.displayName) : msg.fromUser ? "User" : "Bot") + ": " + b(htmlEncode2If(shouldHtmlEncodeMsg(msg), msg.text));
      }

      public Collection<Worker> workersAvailable() {
        long timestamp = now() - workerLongPollMaxWait - 10000;
        return filter(list(Worker.class), w -> w.available && w.lastOnline >= timestamp);
      }

      public boolean anyWorkersAvailable() {
        return nempty(workersAvailable());
      }

      public String renderBotStatus(Conversation conv) {
        return "Bot is " + b(conv.botOn ? "on" : "off") + "<br>" + "Assigned worker: " + b(conv.worker == null ? "none" : conv.worker.displayName);
      }
    }

    transient public WorkerChat workerChat = new WorkerChat();

    transient public ReliableSingleThread rstBotActions = dm_rst(this, new Runnable() {

      public void run() {
        try {
          botActions();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "botActions();";
      }
    });

    transient public String defaultHeaderColorLeft = "#2a27da";

    transient public String defaultHeaderColorRight = "#00ccff";

    transient public boolean enableUsers = false;

    transient public boolean useWebSockets = false;

    transient public boolean showRegisterLink = false;

    transient public boolean showTalkToBotLink = false;

    transient public boolean alwaysRedirectToHttps = false;

    transient public boolean redirectOnLogout = false;

    transient public boolean showFullErrors = false;

    transient public boolean lockWhileDoingBotActions = false;

    transient public boolean standardButtonsAsSymbols = false;

    transient public boolean enableVars = false;

    transient public boolean enableAvatars = false;

    transient public boolean enableRandomActions = false;

    transient public boolean recordExecutionsAndInputs = true;

    transient public boolean phoneNumberSpecialInputField = true;

    transient public boolean enableRadioButtons = false;

    transient public boolean newDialogAfterWindowClosed = false;

    transient public boolean showJoiningConversation = false;

    transient public boolean quickRadioButtons = false;

    transient public boolean useDynamicComboBoxes = false;

    transient public boolean prefixPrintsWithConvID = true;

    transient public boolean enableUndoStates = false;

    transient public boolean showCRUDToEveryone = false;

    transient public boolean showOnlySelectedObject = false;

    transient public boolean storeBaseClassesInStructure = false;

    public String mailSenderInfo;

    transient public int typingTimeshift = 2000;

    transient public ThreadLocal<Req> currentReq = new ThreadLocal();

    transient volatile public Scorer consistencyCheckResults;

    transient public Lock statsLock = lock();

    transient public Map<String, String> specialPurposes = litcimap("bad email address", "Please enter a valid e-mail address", "bad phone number", "Please enter a valid phone number");

    public void start() {
      super.start();
      dm_setModuleName(botName);
      dm_assertFirstSibling();
      concepts_setUnlistedByDefault(true);
      standardTimeZone();
      standardTimeZone_name = timeZone;
      print("DB program ID: " + dbProgramID());
      realPW();
      pWebChatBot();
      dm_doEvery(60.0, new Runnable() {

        public void run() {
          try {
            cleanConversations();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "cleanConversations();";
        }
      });
      rstBotActions.trigger();
    }

    public void indexAllLinkableClasses() {
      ensureConceptClassesAreIndexed(allLinkableClasses());
    }

    public JComponent visualize() {
      JComponent _c = super.visualize();
      addToControlArea(jPopDownButton_noText(popDownButtonEntries()));
      return _c;
    }

    public Object[] popDownButtonEntries() {
      return litobjectarray("Show/edit master password...", runnableThread(new Runnable() {

        public void run() {
          try {
            AutoCloseable __23 = enter();
            try {
              editMasterPassword();
            } finally {
              _close(__23);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "temp enter();  editMasterPassword();";
        }
      }), "Show/edit mail sender info...", runnableThread(new Runnable() {

        public void run() {
          try {
            AutoCloseable __24 = enter();
            try {
              editMailSenderInfo();
            } finally {
              _close(__24);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "temp enter();  editMailSenderInfo();";
        }
      }));
    }

    static public class Req {

      public IWebRequest webRequest;

      public String uri;

      public Map<String, String> params;

      public AuthedDialogID auth;

      public Domain authDomainObj;

      public String authDomain;

      public HTMLFramer1 framer;

      public boolean masterAuthed = false;

      public Conversation conv;

      public String uri() {
        return uri;
      }

      public Map<String, String> params() {
        return params;
      }

      public boolean requestAuthed() {
        return auth != null;
      }

      public String get(String param) {
        return webRequest.get(param);
      }

      public void markNoSpam() {
        webRequest.noSpam();
      }

      public void noSpam() {
        markNoSpam();
      }
    }

    public boolean calcMasterAuthed(Req req) {
      return req.auth != null && req.auth.master;
    }

    public Object html(IWebRequest request) {
      AutoCloseable __18 = enter();
      try {
        try {
          return html2(request);
        } catch (Throwable e) {
          printStackTrace(e);
          return serve500(showFullErrors ? getStackTrace(e) : "Error.");
        }
      } finally {
        _close(__18);
      }
    }

    public void requestServed() {
    }

    public Object html2(IWebRequest request) {
      htmlencode_forParams_useV2();
      {
        Lock __2 = statsLock;
        lock(__2);
        try {
          requestsServed++;
          change();
          requestServed();
        } finally {
          unlock(__2);
        }
      }
      String uri = request.uri();
      Map<String, String> params = request.params();
      Req req = new Req();
      req.webRequest = request;
      req.uri = uri;
      req.params = params;
      if (alwaysRedirectToHttps) {
        Object __10 = redirectToHttps(req);
        if (__10 != null)
          return __10;
      }
      if (eq(params.get("_newConvCookie"), "1"))
        return hrefresh(appendQueryToURL(req.uri, mapPlus(mapMinus(req.params, "_newConvCookie"), "cookie", "test_" + aGlobalID())));
      String cookie = request.cookie();
      boolean workerMode = nempty(params.get("workerMode")) || startsWith(uri, "/worker");
      String domain = request.domain(), _domain = domain;
      saveDeliveredDomain(domain);
      Domain domainObj = findDomainObj(domain);
      String convCookie = params.get("cookie");
      Conversation conv = isRequestFromBot(req) ? null : nempty(convCookie) ? getConv(convCookie) : nempty(cookie) ? getConv(cookie) : null;
      req.conv = conv;
      AutoCloseable tempThing = conv == null || !prefixPrintsWithConvID ? null : temp_printPrefix("Conv " + conv.cookie + ": ");
      AutoCloseable __19 = tempThing;
      try {
        AutoCloseable __20 = tempSetTL(currentReq, req);
        try {
          String botConfig = params.get("_botConfig");
          Map<String, String> botConfigParams = decodeURIParams(botConfig);
          String simulatedDomain = botConfigParams.get("domain");
          Domain domainObj2 = nempty(simulatedDomain) ? findDomainObj(simulatedDomain) : domainObj;
          if (nempty(botConfigParams))
            cset(conv, "botConfig", botConfigParams);
          if (conv != null && !workerMode)
            if (cset_trueIfChanged(conv, "ip", request.clientIP(), "domain", domain, "domainObj", domainObj2)) {
              calcCountry(conv);
              initAvatar(conv);
            }
          {
            Object __11 = handleAuth(req, cookie);
            if (__11 != null)
              return __11;
          }
          Matches m = new Matches();
          if (startsWith(uri, "/worker-image/", m)) {
            long id = parseLong(m.rest());
            return subBot_serveFile_maxCache(workerImageFile(id), "image/jpeg");
          }
          if (startsWith(uri, "/uploaded-image/", m)) {
            long id = parseLong(m.rest());
            UploadedImage img = getConcept(UploadedImage.class, id);
            return img == null ? serve404() : subBot_serveFile_maxCache(img.imageFile(), "image/jpeg");
          }
          if (startsWith(uri, "/uploaded-sound/", m)) {
            long id = parseLong(m.rest());
            UploadedSound sound = getConcept(UploadedSound.class, id);
            return sound == null ? serve404() : subBot_serveFile_maxCache(sound.soundFile(), mp3mimeType());
          }
          if (startsWith(uri, "/uploaded-file/", m)) {
            long id = parseLong(dropAfterSlash(m.rest()));
            UploadedFile f = getConcept(UploadedFile.class, id);
            return f == null ? serve404() : subBot_serveFile_maxCache(f.theFile(), or2(params.get("ct"), or2(trim(f.mimeType), binaryMimeType())));
          }
          AuthedDialogID auth = authObject(cookie);
          if (eq(params.get("logout"), "1")) {
            cdelete(auth);
            if (redirectOnLogout)
              return hrefresh(req.uri);
            auth = null;
          }
          req.auth = auth;
          boolean requestAuthed = auth != null;
          boolean masterAuthed = req.masterAuthed = calcMasterAuthed(req);
          Domain authDomainObj = !requestAuthed ? null : auth.restrictedToDomain.get();
          req.authDomainObj = authDomainObj;
          String authDomain = !requestAuthed ? null : auth.domain();
          req.authDomain = authDomain;
          if (requestAuthed)
            req.markNoSpam();
          {
            Object __12 = serve2(req);
            if (__12 != null)
              return __12;
          }
          makeFramer(req);
          HTMLFramer1 framer = req.framer;
          if (requestAuthed || showCRUDToEveryone) {
            Object __13 = serveCRUD(req);
            if (__13 != null)
              return __13;
          }
          if (!requestAuthed && settings().talkToBotOnlyWithAuth)
            return serveAuthForm(params.get("uri"));
          if (eq(uri, "/emoji-picker/index.js"))
            return withHeader(subBot_maxCacheHeaders(serveInputStream(bufferedFileInputStream(loadLibrary("#1400436")), "text/javascript")));
          if (eq(uri, "/emoji-picker-test"))
            return loadSnippet("#1029870");
          if (eq(uri, "/logs")) {
            if (!masterAuthed)
              return serveAuthForm(rawLink(uri));
            return webChatBotLogsHTML2(rawLink(uri), params);
          }
          if (eq(uri, "/refchecker")) {
            if (!masterAuthed)
              return serveAuthForm(rawLink(uri));
            ConceptsRefChecker refChecker = new ConceptsRefChecker(db_mainConcepts());
            List errors = refChecker.run();
            if (eq(params.get("fix"), "1"))
              return serveText(refChecker.fixAll());
            else
              return serveText(jsonEncode_breakAtLevels(2, litorderedmap("errors", allToString(errors))));
          }
          if (eq(uri, "/backupDBNow")) {
            if (!masterAuthed)
              return serveAuthForm(rawLink(uri));
            return serveText("Backed up DB as " + fileInfo(backupConceptsNow()));
          }
          if (eq(uri, "/auth-only")) {
            if (!requestAuthed)
              return serveAuthForm(params.get("uri"));
            return "";
          }
          if (eq(uri, "/leads-api"))
            return serveLeadsAPI(request);
          if (workerChat != null) {
            Object __14 = workerChat.html(req);
            if (__14 != null)
              return __14;
          }
          String message = trim(params.get("btn"));
          if (empty(message))
            message = trim(params.get("message"));
          if (match("new dialog", message)) {
            Lock __3 = dbLock();
            lock(__3);
            try {
              conv.newDialog();
              message = null;
            } finally {
              unlock(__3);
            }
          }
          if (eqic(message, "!toggle notifications")) {
            cset(conv, "notificationsOn", !conv.notificationsOn);
            message = null;
          }
          if (eqic(message, "!undo states")) {
            conv.add(new Msg(false, n2(conv.undoStates, "undo state")));
            message = null;
          }
          this.conv.set(conv);
          if (nempty(message) && !lastUserMessageWas(conv, message)) {
            Lock __4 = dbLock();
            lock(__4);
            try {
              print("Adding message: " + message);
              possiblyTriggerNewDialog(conv);
              if (workerMode) {
                Msg msg = new Msg(false, message);
                msg.fromWorker = auth.loggedIn;
                conv.add(msg);
              } else {
                conv.add(new Msg(true, message));
                addScheduledAction(new OnUserMessage(conv));
              }
            } finally {
              unlock(__4);
            }
          }
          String testMode = params.get("testMode");
          if (nempty(testMode)) {
            print("Setting testMode", testMode);
            cset(conv, "testMode", eq("1", testMode));
          }
          if (eq(uri, "/msg"))
            return withHeader("OK");
          if (eq(uri, "/typing")) {
            if (workerMode) {
              conv.botTyping = now();
              print(conv.botTyping + " Bot typing in: " + conv.cookie);
            } else {
              conv.userTyping = now();
              print(conv.userTyping + " User typing in: " + conv.cookie);
            }
            return withHeader("OK");
          }
          if (eq(uri, "/renderMessages")) {
            long msgTime = parseLong(params.get("msgTime"));
            List<Msg> msgs = conv.allMsgs();
            if (msgTime != 0)
              msgs = filter(msgs, msg -> msg.time == msgTime);
            StringBuilder buf = new StringBuilder();
            renderMessages(conv, buf, msgs, msg -> false);
            return hhtml_title_body(nMessages(msgs), hstylesheetsrc(cssURL()) + p(nMessages(msgs) + " found") + buf);
          }
          if (eq(uri, "/incremental")) {
            if (newDialogAfterWindowClosed && !conv.isActive()) {
              print("Clearing conversation, timed out");
              Lock __5 = dbLock();
              lock(__5);
              try {
                conv.newDialog();
              } finally {
                unlock(__5);
              }
            }
            long start = sysNow(), start2 = now();
            print("start2", start2);
            cset(conv, "lastPing", now());
            possiblyTriggerNewDialog(conv);
            int a = parseInt(params.get("a"));
            int reloadCounter = conv.reloadCounter;
            List<Msg> msgs;
            boolean first = true;
            int timeout = toInt(req.params.get("timeout"));
            long endTime = start + (timeout <= 0 || timeout > longPollMaxWait / 1000 ? longPollMaxWait : timeout * 1000L);
            while (licensed() && sysNow() < endTime) {
              int as = conv.archiveSize();
              msgs = cloneSubList(conv.msgs, a - as);
              boolean reloadTriggered = conv.reloadCounter > reloadCounter;
              boolean actuallyNewDialog = a < as;
              boolean newDialog = actuallyNewDialog || reloadTriggered;
              if (newDialog)
                msgs = cloneList(conv.msgs);
              long typing = workerMode ? conv.userTyping : conv.botTyping;
              boolean otherPartyTyping = typing >= start2 - typingTimeshift;
              boolean anyEvent = nempty(msgs) || newDialog || otherPartyTyping;
              if (!anyEvent) {
                if (first) {
                  first = false;
                }
                sleep(longPollTick);
              } else {
                if (eq(req.params.get("json"), "1"))
                  return serveJSON_breakAtLevels(2, litorderedmap("n", conv.allCount(), "newDialog", trueOrNull(newDialog), "otherPartyTyping", trueOrNull(otherPartyTyping), "msgs", map(msgs, msg -> litorderedmap("time", msg.time, "fromUser", msg.fromUser, "fromWorker", msg.fromWorker == null ? null : msg.fromWorker.displayName, "text", msg.text, "labels", msg.labels))));
                StringBuilder buf = new StringBuilder();
                if (newDialog) {
                  String l = or2_trim(domainObj2.headerColorLeft, defaultDomain().headerColorLeft, defaultHeaderColorLeft), r = or2_trim(domainObj2.headerColorRight, defaultDomain().headerColorRight, defaultHeaderColorRight);
                  buf.append(hcss(".chat_header { background: linear-gradient(135deg, " + hexColorToCSSRGB(l) + " 0%, " + hexColorToCSSRGB(r) + " 100%); }"));
                  buf.append(hscript("$('#chatBot_notiToggleText').text(" + jsQuote("Turn " + (conv.notificationsOn ? "off" : "on") + " notifications") + ");"));
                  if (showJoiningConversation) {
                    buf.append(hscript("$('#otherSideTyping .joining').html(" + jsQuote(nameOfBotSide(conv) + " now joining conversation...") + ");" + "setTimeout(function() { $('#otherSideTyping .joining').html(''); }, 5000);"));
                  }
                }
                if (otherPartyTyping) {
                  buf.append(hscript("showTyping(" + jsQuote(conv.botImg()) + ");"));
                }
                renderMessages(conv, buf, msgs);
                if (ariaLiveTrick2 && !workerMode) {
                  Msg msg = lastBotMsg(msgs);
                  if (msg != null) {
                    String author = msg.fromWorker != null ? htmlEncode2(msg.fromWorker.displayName) : botName;
                    buf.append(hscript("$(\"#screenreadertrick\").html(" + jsQuote(author + " says: " + msg.text) + ");"));
                  }
                }
                if (a != 0 && anyInterestingMessages(msgs, workerMode))
                  buf.append(hscript(stringIf(conv.notificationsOn, "window.playChatNotification();\n") + "window.setTitleStatus(" + jsQuote((workerMode ? "User" : botName) + " says…") + ");"));
                String html = str(buf);
                return withHeader("<!-- " + conv.allCount() + " " + (newDialog ? actuallyNewDialog ? "NEW DIALOG " : "NO NOTIFY NEW DIALOG " : "") + "-->\n" + html);
              }
            }
            return withHeader("");
          }
          if (eqOneOf(uri, "/script", "/demo")) {
            Lock __6 = dbLock();
            lock(__6);
            try {
              String myTemplateID = templateID;
              String templateIDParam = req.params.get("templateID");
              if (nempty(templateIDParam) && allowedTemplateID(templateIDParam))
                myTemplateID = templateIDParam;
              String html = loadSnippet_cached(myTemplateID);
              String botLayout = req.params.get("botLayout");
              String layout = or2(botLayout, defaultBotLayout());
              html = modifyTemplateBeforeDelivery(html, req);
              String heading = or2(headingForReq(req), or2(trim(domainObj2.botName), this.heading));
              String botImg = botImageForDomain(domainObj);
              UploadedSound sound = settings().notificationSound.get();
              String notificationSound = sound != null ? sound.soundURL() : defaultNotificationSound();
              String miscParam = workerMode ? "workerMode=1&" : "";
              if (nempty(botLayout))
                miscParam += "botLayout=" + urlencode(botLayout) + "&";
              String incrementalURL = baseLink + "/incremental?" + miscParam + "a=";
              String typingURL = baseLink + "/typing?" + miscParam;
              String msgURL = baseLink + "/msg?" + miscParam + "message=";
              if (eqic(layout, "sahil")) {
                html = replaceDollarVars(html, "incrementalURL", incrementalURL, "typingURL", typingURL, "msgURL", msgURL, "n", 0, "notificationSound", notificationSound, "workerMode", workerMode, "heading", heading, "botImg", botImg);
              } else {
                String langlinks = "<!-- langlinks here -->";
                if (html.contains(langlinks))
                  html = html.replace(langlinks, ahref(rawLink("eng"), "English") + " | " + ahref(rawLink("deu"), "German"));
                html = html.replace("#COUNTRY#", lower(conv.country));
                html = html.replace("#BOTIMG#", botImg);
                html = html.replace("#N#", "0");
                html = html.replace("#INCREMENTALURL#", incrementalURL);
                html = html.replace("#MSGURL#", msgURL);
                html = html.replace("#TYPINGURL#", typingURL);
                html = html.replace("#CSS_ID#", psI_str(cssID));
                if (ariaLiveTrick || ariaLiveTrick2)
                  html = html.replace("aria-live=\"polite\">", ">");
                html = html.replace("#OTHERSIDE#", workerMode ? "User" : "Representative");
                if (nempty(params.get("debug")))
                  html = html.replace("var showActions = false;", "var showActions = true;");
                html = html.replace("#AUTOOPEN#", jsBool(workerMode || eq(params.get("_autoOpenBot"), "1") || botAutoOpen(domainObj2)));
                html = html.replace("#BOT_ON#", jsBool(botOn() || eq(uri, "/demo")));
                html = html.replace("$HEADING", heading);
                html = html.replace("#WORKERMODE", jsBool(workerMode));
                html = html.replace("#NOTIFICATIONSOUND#", notificationSound);
                html = html.replace("<!-- MSGS HERE -->", "");
                html = hreplaceTitle(html, heading);
              }
              if (eq(uri, "/demo"))
                return hhtml(hhead(htitle(heading) + loadJQuery2()) + hbody(hjavascript(html)));
              else
                return withHeader(subBot_serveJavaScript(html));
            } finally {
              unlock(__6);
            }
          }
          {
            Object __15 = serveOtherPage(req);
            if (__15 != null)
              return __15;
          }
          if (eq(uri, "/")) {
            Object __16 = serveHomePage();
            if (__16 != null)
              return __16;
          }
          if (!startsWith(uri, "/crud/")) {
            UploadedFile fileToServe = conceptWhere(UploadedFile.class, "liveURI", urldecode(dropSlashPrefix(uri)));
            if (fileToServe != null)
              return subBot_serveFile(fileToServe.theFile(), nempty(fileToServe.mimeType) ? fileToServe.mimeType : guessMimeTypeFromFileName(afterLastSlash(fileToServe.liveURI)));
          }
          if (!requestAuthed)
            return serveAuthForm(params.get("uri"));
          if (masterAuthed && eq(uri, "/dialogTree")) {
            BotStep step = getConcept(BotStep.class, toLong(params.get("stepID")));
            if (step == null)
              return serve404("Step not found");
            return hhtml_head_title_body("Dialog Tree for " + step, hmobilefix() + hsansserif() + h2("Dialog Tree") + hcss_linkColorInherit() + hcss("\r\n            .dialogTree li { margin-top: 0.8em; }\r\n          ") + renderDialogTree(step));
          }
          if (eq(uri, "/thoughts"))
            return serveThoughts(req);
          if (masterAuthed && eq(uri, "/search"))
            return serveSearch(req);
          if (eq(uri, "/leads-csv")) {
            String text = leadsToCSV(conceptsWhere(Lead.class, mapToParams(filtersForClass(Lead.class, req))));
            String name = "bot-leads" + (authDomainObj == null ? "" : "-" + replace(str(authDomainObj), "/", "-")) + "-" + ymd_minus_hm() + ".csv";
            return serveCSVWithFileName(name, text);
          }
          if (eq(uri, "/cleanConversations") && masterAuthed) {
            cleanConversations();
            return hrefresh(baseLink + "/crud/Conversation");
          }
          if (eq(uri, "/deleteDeliveredDomains") && masterAuthed) {
            deleteDeliveredDomains();
            return hrefresh(baseLink + "/crud/DeliveredDomain");
          }
          if (eq(uri, "/emojis")) {
            framer.title = "Emoji List";
            framer.contents.add(htmlTable2(map(emojiShortNameMap(), (code, emoji) -> litorderedmap("Shortcode", code, "Emoji", emoji))));
          }
          if (eq(uri, "/embedCode")) {
            String goDaddyEmbedCode = "";
            framer.title = "Embed Code";
            framer.contents.add(h2("Chat bot embed code") + (empty(goDaddyEmbedCode) ? "" : h3("GoDaddy Site Builder") + p("Add an HTML box with this code:") + pre(htmlEncode2(goDaddyEmbedCode)) + h3("Other")) + p("Add this code in front of your " + tt(htmlEncode2("</body>")) + " tag:") + pre(htmlEncode2(hjavascript_src_withType("https://" + request.domain() + baseLink + "/script"))));
          }
          if (eq(uri, "/stats")) {
            long us = db_mainConcepts().uncompressedSize;
            framer.add(htableRaw2(llNonNulls(ll("Concepts", n2(conceptCount())), ll("DB size on disk", htmlEncode2(toK_str(fileSize(conceptsFile())))), us == 0 ? null : ll("DB size uncompressed", htmlEncode2(toK_str(us))), ll("DB load time", htmlEncode2(renderDBLoadTime())), ll("DB save time", htmlEncode2(renderDBSaveTime())), ll("Last saved", htmlEncode2(renderHowLongAgo(db_mainConcepts().lastSaveWas)))), ll("class", "responstable"), null, null));
          }
          if (eq(uri, "/unpackToWeb") && req.masterAuthed) {
            UploadedFile file = getConcept(UploadedFile.class, parseLong(req.params.get("fileID")));
            if (file == null)
              return serve404("File not found");
            String path = unnull(req.params.get("path"));
            File zipFile = file.theFile();
            int changes = 0;
            for (String filePath : listZIP(zipFile)) {
              String liveURI = appendSlash(path) + filePath;
              UploadedFile entry = uniq(UploadedFile.class, "liveURI", liveURI);
              byte[] data = loadBinaryFromZip(zipFile, filePath);
              if (!fileContentsIs(entry.theFile(), data)) {
                ++changes;
                saveBinaryFile(entry.theFile(), data);
                touchConcept(entry);
              }
            }
            return "Unpacked, " + nChanges(changes);
          }
          {
            Object __17 = serveDefaultPage(req);
            if (__17 != null)
              return __17;
          }
          return completeFrame(req);
        } finally {
          _close(__20);
        }
      } finally {
        _close(__19);
      }
    }

    public Object serveDefaultPage(Req req) {
      return null;
    }

    public Object completeFrame(Req req) {
      HTMLFramer1 framer = req.framer;
      if (req.requestAuthed()) {
        if (settings().enableWorkerChat)
          framer.addNavItem(baseLink + "/worker", "Worker chat");
        framer.addNavItem(baseLink + "?logout=1", "Log out");
      }
      return framer.render();
    }

    public Object serve2(Req req) {
      return null;
    }

    public Object serveOtherPage(Req req) {
      return null;
    }

    public <A> A getDomainValue(Domain domainObj, IF1<Domain, A> getter, A defaultValue) {
      if (domainObj != null) {
        A val = getter.get(domainObj);
        if (val != null)
          return val;
      }
      {
        A val = getter.get(defaultDomain());
        if (val != null)
          return val;
      }
      return defaultValue;
    }

    public void makeFramer(Req req) {
      HTMLFramer1 framer = new HTMLFramer1();
      req.framer = framer;
      framer.title = adminName + " " + squareBracket(loggedInUserDesc(req));
      framer.addInHead(hsansserif() + hmobilefix() + hresponstable() + hcss_responstableForForms());
      framer.addInHead(loadJQuery2());
      framer.addInHead(hjs_selectize());
      framer.addInHead(hjs_copyToClipboard());
      framer.addInHead(hNotificationPopups());
      framer.addInHead(hcss_linkColorInherit());
      if (useWebSockets)
        framer.addInHead(webSocketHeadStuff(req));
      if (showTalkToBotLink)
        framer.addNavItem(simulateDomainLink(req.authDomain), "Talk to bot", "targetBlank", true);
      List<Class> classes = crudClasses(req);
      List<Class> cmdClasses = req.masterAuthed ? botCmdClasses() : null;
      for (Class c : classes) framer.addNavItem(makeClassNavItem(c, req));
      if (nempty(cmdClasses))
        framer.contents.add(p("Bot actions: " + joinWithVBar(map(cmdClasses, c -> makeClassNavItem(c, req)))));
    }

    public <A extends Concept> HCRUD makeCRUD(Class<A> c, Req req) {
      return makeCRUD(c, req, req.framer);
    }

    public <A extends Concept> HCRUD makeCRUD(Class<A> c, Req req, HTMLFramer1 framer) {
      HCRUD_Concepts data = crudData(c, req);
      data.referencesBlockDeletion = true;
      String search = trim(req.get("search"));
      data.customFilter = crudSearchFilter(req, data, search);
      HCRUD crud = new HCRUD(crudLink(c), data);
      crud.searchQuery = search;
      crud.params = req.params;
      crud.buttonsOnTop = neqOneOf(c, UploadedFile.class, UploadedSound.class, UploadedImage.class);
      crud.haveJQuery = crud.haveSelectizeJS = true;
      crud.sortable = true;
      crud.paginate = true;
      crud.paginator.step = 25;
      crud.cmdsLeft = true;
      crud.showCheckBoxes = true;
      crud.tableClass = "responstable";
      crud.formTableClass = "responstableForForms";
      if (!req.requestAuthed())
        crud.disableAllMutationRights();
      crud.renderValue_inner = value -> {
        if (isConceptList(value)) {
          List<Concept> l = (List<Concept>) value;
          return joinMap(l, ref -> p(ahref(conceptLink(ref), htmlEncode_nlToBr_withIndents(str(ref)))));
        }
        String html = crud.renderValue_inner_base(value);
        if (value instanceof Concept)
          return ahref(conceptLink(((Concept) value)), html);
        return html;
      };
      if (c == Conversation.class) {
        crud.nav = () -> joinNemptiesWithVBar(crud.nav_base(), ahref(baseLink + "/cleanConversations", "Clean list"));
        crud.unshownFields = litset("oldDialogs", "worker", "botOn", "lastPing", "cookie", "form", "testMode", "userMessageProcessed", "newDialogTriggered");
      }
      if (c == DeliveredDomain.class || c == Conversation.class || c == Lead.class || c == ConversationFeedback.class)
        crud.allowCreate = crud.allowEdit = false;
      if (c == Settings.class) {
        crud.singleton = countConcepts(Settings.class) == 1;
        if (!settings().multiLanguageMode)
          crud.unshownFields = litset("defaultLanguage");
        {
          if (framer != null)
            framer.add(p(joinNemptiesWithVBar(ahref(baseLink + "/emojis", "Emojis"), ahref(baseLink + "/stats", "Stats"), ahref(baseLink + "/embedCode", "Embed Code"))));
        }
      }
      if (c == Lead.class) {
        if (framer != null)
          framer.add(p(ahref(baseLink + "/leads-csv", "Export as CSV")));
      }
      if (c == BotOutgoingQuestion.class) {
        crud.unlistedFields = litset("multipleChoiceSeparator", "placeholder");
        if (!enableRadioButtons)
          crud.unlistedFields.add("radioButtons");
        crud.massageFormMatrix = (map, matrix) -> {
          int idx = indexOfPred(matrix, row -> cic(first(row), "Actions"));
          BotOutgoingQuestion item = getConcept(BotOutgoingQuestion.class, toLong(map.get(crud.idField())));
          if (item == null)
            return;
          if (idx < 0)
            return;
          List<String> row = matrix.get(idx);
          row.set(1, hcrud_mergeTables(row.get(1), tag("table", map(s -> tr(td() + td(htmlEncode2(s))), item.buttons)), "for:"));
        };
      }
      data.addFilters(filtersForClass(c, req));
      if (c == Domain.class) {
        crud.renderCmds = map -> {
          Domain dom = getConcept(Domain.class, toLong(crud.itemID(map)));
          return joinNemptiesWithVBar(crud.renderCmds_base(map), targetBlank(simulateDomainLink(dom.domainAndPath), "Talk to bot"));
        };
        {
          if (framer != null)
            framer.add(p("See also the " + ahref(crudLink(DeliveredDomain.class), "list of domains the bot was delivered on")));
        }
      }
      if (c == DeliveredDomain.class) {
        crud.nav = () -> joinNemptiesWithVBar(crud.nav_base(), ahref("/deleteDeliveredDomains", "Delete all"));
        crud.renderCmds = map -> {
          DeliveredDomain dom = getConcept(DeliveredDomain.class, toLong(crud.itemID(map)));
          return joinNemptiesWithVBar(crud.renderCmds_base(map), targetBlank(simulateDomainLink(dom.domain), "Talk to bot"));
        };
      }
      if (c == UploadedImage.class) {
        crud.massageFormMatrix = (map, matrix) -> {
          UploadedImage item = getConcept(UploadedImage.class, toLong(crud.itemID(map)));
          addInFront(matrix, ll("Upload image", hjs_imgUploadBase64Encoder() + himageupload("id", "imgUploader") + hhiddenWithIDAndName("f_img_base64")));
        };
        crud.formParameters = () -> paramsPlus(crud.formParameters_base(), "onsubmit", "return submitWithImageConversion(this)");
      }
      if (c == UploadedSound.class) {
        crud.massageFormMatrix = (map, matrix) -> {
          UploadedSound item = getConcept(UploadedSound.class, toLong(crud.itemID(map)));
          matrix.add(ll("Upload MP3", hjs_fileUploadBase64Encoder() + hmp3upload("id", "fileUploader") + hhiddenWithIDAndName("f_file_base64")));
        };
        crud.formParameters = () -> litparams("onsubmit", "return submitWithFileConversion(this)");
      }
      if (c == UploadedFile.class) {
        crud.massageFormMatrix = (map, matrix) -> {
          UploadedFile item = getConcept(UploadedFile.class, toLong(crud.itemID(map)));
          matrix.add(ll("Upload File", hjs_fileUploadBase64Encoder() + hfileupload("id", "fileUploader") + hhiddenWithIDAndName("f_file_base64") + hjs("\r\n            $(\"input[name=thefile]\").change(function(e) {\r\n              var name = e.target.files[0].name;\r\n              if (name)\r\n                $(\"input[name=f_name]\").val(name);              \r\n            });\r\n           ")));
        };
        crud.formParameters = () -> litparams("onsubmit", "return submitWithFileConversion(this)");
      }
      if (isSubclassOf(c, BotStep.class)) {
        crud.renderCmds = map -> {
          BotStep step = getConcept(BotStep.class, toLong(crud.itemID(map)));
          return joinNemptiesWithVBar(crud.renderCmds_base(map), targetBlank(simulateScriptLink(step), "Test in bot"), hPopDownButton(targetBlank(baseLink + "/dialogTree?stepID=" + step.id, "Show Dialog Tree")));
        };
        {
          if (framer != null)
            framer.add(p("See also the " + ahref(crudLink(DeliveredDomain.class), "list of domains the bot was delivered on")));
        }
      }
      if (c == Worker.class) {
        crud.unshownFields = litset("lastOnline");
        crud.uneditableFields = litset("available", "lastOnline");
      }
      crud.postProcessTableRow = (item, rendered) -> {
        long id = crud.itemIDAsLong(item);
        Concept concept = getConcept(id);
        if (concept == null)
          return rendered;
        Collection<Concept> refs = allBackRefs(concept);
        if (empty(refs))
          return rendered;
        refs = sortedByConceptID(refs);
        String rts = req.get("refsToShow");
        int refsToShow = empty(rts) ? maxRefsToShow : parseInt(rts);
        int more = l(refs) - refsToShow;
        return mapPlus(rendered, span_title("Where is this object used", "References"), joinMap(takeFirst(refsToShow, refs), ref -> p(ahref(conceptLink(ref), htmlEncode_nlToBr_withIndents(str(ref))))) + (more <= 0 ? "" : "<br>" + ahref(addParamsToURL(crudLink(concept), "refsToShow", 10000), "+" + more + " more")));
      };
      return crud;
    }

    public boolean isLinkableConcept(Concept c, Req req) {
      return req != null && c != null && contains(allLinkableClasses(req), _getClass(c));
    }

    public String crudLink(Concept c) {
      return conceptLink(c, currentReq.get());
    }

    public String conceptLink(Concept c) {
      return conceptLink(c, null);
    }

    public String conceptLink(Concept c, Req req) {
      if (req != null && !isLinkableConcept(c, req))
        return null;
      return c == null ? null : appendQueryToURL(crudLink(c.getClass()), "selectObj", c.id, "showOnlySelected", showOnlySelectedObject ? "1" : null) + "#obj" + c.id;
    }

    public String conceptEditLink(Concept c, Object... __) {
      return c == null ? null : appendQueryToURL(crudLink(c.getClass()), paramsPlus(__, "edit", c.id));
    }

    public String conceptDuplicateLink(Concept c) {
      return c == null ? null : appendQueryToURL(crudLink(c.getClass()), "duplicate", c.id);
    }

    public <A extends Concept> String makeClassNavItem(Class<A> c, Req req) {
      HCRUD_Concepts<A> data = crudData(c, req);
      HCRUD crud = makeCRUD(c, req, null);
      Map filters = filtersForClass(c, req);
      int count = countConcepts(c, mapToParams(filters));
      return (crud.singleton ? "" : n2(count) + " ") + ahref(crudLink(c), count == 1 ? data.itemName() : data.itemNamePlural()) + (!crud.actuallyAllowCreate() ? "" : " " + ahref(crud.newLink(), "+", "title", "Create New " + data.itemName()));
    }

    public Collection<Class> allLinkableClasses() {
      Req req = new Req();
      req.masterAuthed = true;
      return allLinkableClasses(req);
    }

    public Collection<Class> allLinkableClasses(Req req) {
      return joinSets(crudClasses(req), botCmdClasses());
    }

    public List<Class> botCmdClasses() {
      return dynNewBot2_botCmdClasses();
    }

    public List<Class> dynNewBot2_botCmdClasses() {
      List<Class> l = ll(BotMessage.class, UploadedImage.class, BotImage.class, BotOutgoingQuestion.class, BotPause.class, Sequence.class);
      if (enableRandomActions)
        l.add(BotRandomAction.class);
      if (settings().multiLanguageMode)
        l.add(BotSwitchLanguage.class);
      return l;
    }

    public List<Class> crudClasses(Req req) {
      return dynNewBot2_crudClasses(req);
    }

    public List<Class> dynNewBot2_crudClasses(Req req) {
      if (req == null ? null : req.masterAuthed) {
        List<Class> l = ll(Conversation.class, Lead.class, ConversationFeedback.class, Domain.class, UserKeyword.class, UploadedSound.class, UploadedFile.class);
        if (enableAvatars)
          l.add(Avatar.class);
        l.add(Settings.class);
        if (settings().multiLanguageMode)
          l.add(Language.class);
        if (settings().enableWorkerChat)
          l.add(Worker.class);
        if (recordExecutionsAndInputs)
          addAll(l, ExecutedStep.class, InputHandled.class);
        return l;
      } else
        return ll(Conversation.class, Lead.class, ConversationFeedback.class);
    }

    public Map<String, Object> filtersForClass(Class c, Req req) {
      if (c == Conversation.class && req.authDomainObj != null)
        return litmap("domainObj", req.authDomainObj);
      if (eqOneOf(c, Lead.class, ConversationFeedback.class) && req.authDomainObj != null)
        return litmap("domain", req.authDomainObj);
      return null;
    }

    public String crudLink(Class c) {
      return baseLink + "/crud/" + shortName(c);
    }

    public <A extends Concept> HCRUD_Concepts<A> crudData(Class<A> c, Req req) {
      HCRUD_Concepts<A> cc = new HCRUD_Concepts<>(c);
      if (useDynamicComboBoxes)
        cc.useDynamicComboBoxes = true;
      if (eq(req.get("dynamicComboBoxes"), "1"))
        cc.useDynamicComboBoxes = true;
      cc.trimAllSingleLineValues = true;
      cc.fieldHelp("comment", "Put any comment about this object here");
      cc.itemName = () -> replaceIfEquals(dropPrefix("Bot ", cc.itemName_base()), "Jump Button", "Button");
      cc.valueConverter = new DefaultValueConverterForField() {

        public OrError<Object> convertValue(Object object, Field field, Object value) {
          print("convertValue " + field + " " + className(value));
          if (value instanceof String && eq(field.getGenericType(), type_LS())) {
            print("tlft");
            return new OrError(tlft((String) value));
          }
          return super.convertValue(object, field, value);
        }
      };
      if (c == InputHandled.class) {
        cc.itemNamePlural = () -> "Inputs Handled";
      }
      if (c == Domain.class) {
        cc.fieldHelp("domainAndPath", "without http:// or https://", "botName", "Bot name for this domain (optional)", "headerColorLeft", "Hex color for left end of header gradient (optional)", "headerColorRight", "Hex color for right end of header gradient (optional)", "autoOpenBot", "Open the bot when page is loaded", "password", "A separate password for people who can see only this domain", "pageRegexp", "A Java-style regular expression that filters which page the bot is shown on");
        cc.massageItemMapForList = (item, map) -> {
          map.put("domainAndPath", new HTML(b(htmlEncode2(((Domain) item).domainAndPath))));
          map.put("password", new SecretValue(map.get("password")));
        };
      }
      if (c == BotOutgoingQuestion.class) {
        cc.dropEmptyListValues = false;
        cc.addRenderer("displayText", new HCRUD_Data.TextArea(80, 10));
        cc.addRenderer("buttons", new HCRUD_Data.TextArea(80, 10, o -> lines_rtrim((List) o)));
        cc.fieldHelp("displayText", displayTextHelp(), "key", "Internal key for question (any format, can be empty, put \"-\" to disable storing answer)", "defaultValue", "What the input field is prefilled with", "placeholder", "A text the empty input field shows as a hint", "buttons", "Buttons to offer as standard answers (one per line, use | to add a shortened version submitted as user input)", "allowFreeText", "Can user enter free text in addition to clicking a button?", "multipleChoice", "Can user select multiple buttons?", "optional", "Can user skip the question by entering nothing?", "multipleChoiceSeparator", "Internal field, just leave as it is", "answerCheck", "Select this to validate user's answer against a pattern", "buttonActions", "Optional actions (one for each button in the list above)", "radioButtons", "Show buttons as radio buttons");
        cc.addRenderer("answerCheck", new HCRUD_Data.ComboBox("", "email address", "phone number"));
        cc.massageItemMapForList = (item, map) -> {
          map.put("buttons", new HTML(ol_htmlEncode(((BotOutgoingQuestion) item).buttons)));
          map.put("buttonActions", new HTML(ul(map(((BotOutgoingQuestion) item).buttonActions, action -> ahref(conceptLink(action), htmlEncode2_nlToBr(str(action)))))));
        };
      }
      if (c == UserKeyword.class) {
        cc.fieldHelp("language", "Language that this keyword matches in (optional)", "pattern", targetBlank("http://code.botcompany.de:8081/getraw.php?id=1030319", "'PhraseCache'") + " matching pattern (most important field)", "examples", "Example inputs that should be matched (one per line, optional)", "counterexamples", "Example inputs that should be NOT matched (one per line, optional)", "action", "What bot does when input is matched", "enabled", "Uncheck to disable this keyword", "priority", "If set, this keyword overrides other input handlers (e.g. from outgoing questions)", "precedence", "Precedence over other keywords (higher value = match first)");
        for (String field : ll("examples", "counterexamples")) cc.addRenderer(field, new HCRUD_Data.TextArea(80, 5, o -> lines_rtrim((List) o)));
        cc.massageItemMapForList = (item, map) -> {
          map.put("examples", lines_rtrim(((UserKeyword) item).examples));
          map.put("counterexamples", lines_rtrim(((UserKeyword) item).counterexamples));
        };
      }
      if (c == Settings.class) {
        cc.fieldHelp("mainDomainName", "Domain where bot is hosted (to correctly send image and sound links)", "botTypingDelay", "Delay in seconds before bot sends message, base value", "botTypingDelayPerWord", "Delay in seconds before bot sends message, per word", "botTypingMaxDelay", "Delay in seconds before bot sends message, max value", "preferredCountryCodes", "Country codes to display first in list (e.g. \"+1, +91\")", "notificationSound", "Bot message notification sound (can leave empty, then we use the " + ahref(defaultNotificationSound(), "default sound"), "talkToBotOnlyWithAuth", "Show bot only to authorized persons", "mailLeadsTo", "Where to send a mail when a new lead occurs (addresses separated by comma)", "leadMailSubject", "Subject for lead notification mails");
      }
      if (c == Conversation.class)
        cc.massageItemMapForList = (item, map) -> {
          replaceMap(map, litorderedmap("id", map.get("id"), "IP", map.get("ip"), "started", formatLocalDateWithMinutes(((Conversation) item).created), "country", map.get("country"), "msgs", lines_rtrim(((Conversation) item).msgs), "avatar", map.get("avatar"), "answers", htmlEncode2(renderColonProperties(((Conversation) item).answers)), "stack", new HTML(ol(cloneMap(((Conversation) item).stack, activeSeq -> htmlEncode2(str(activeSeq)))))));
        };
      if (c == BotMessage.class) {
        cc.addRenderer("text", new HCRUD_Data.TextArea(80, 10));
        cc.addRenderer("specialPurpose", new HCRUD_Data.ComboBox(itemPlus("", keys(specialPurposes))));
        cc.fieldHelp("text", displayTextHelp(), "specialPurpose", "Special occasion when to display this message", "disableInput", "Check to disable user input while this message is showing");
      }
      if (c == Form.class)
        cc.massageItemMapForList = (item, map) -> {
          map.put("steps", pnlToStringWithEmptyLines_rtrim(((Form) item).steps));
        };
      if (c == Sequence.class)
        cc.massageItemMapForList = (item, map) -> {
          map.put("steps", new HTML(ol(map(((Sequence) item).steps, step -> ahref(conceptLink(step), htmlEncode2_nlToBr(str(step)))))));
        };
      if (c == BotImage.class)
        cc.massageItemMapForList = (item, map) -> {
          String url = ((BotImage) item).imageURL();
          if (isURL(url))
            map.put("Image Preview", new HTML(himg(url, "style", hcrud_imagePreviewStyle())));
          map.put(cc.fieldNameToHTML("imageURL"), new HTML(htmlEncode2(url) + " " + himgsnippet("#1101381", "onclick", "copyToClipboard(" + jsQuote(url) + "); " + "window.createNotification({ theme: 'success', showDuration: 3000 })({ message: " + jsQuote("Image URL copied to clipboard") + "});")));
        };
      if (c == UploadedImage.class) {
        cc.massageItemMapForList = (item, map) -> {
          String url = ((UploadedImage) item).imageURL();
          File f = ((UploadedImage) item).imageFile();
          map.put("Image Size", toK_str(fileSize(f)));
          if (fileSize(f) > 0)
            map.put("Image Preview", new HTML(himg(url, "style", hcrud_imagePreviewStyle())));
        };
        IVF2 massageItemMapForUpdate_old = cc.massageItemMapForUpdate;
        cc.massageItemMapForUpdate = (item, map) -> {
          cc.massageItemMapForUpdate_fallback(massageItemMapForUpdate_old, item, map);
          String base64 = (String) map.get("img_base64");
          print("Got base64 data: " + l(base64));
          if (nempty(base64)) {
            File f = ((UploadedImage) item).imageFile();
            saveFileVerbose(f, base64decode(base64));
          }
          map.remove("img_base64");
        };
      }
      if (c == UploadedSound.class) {
        cc.massageItemMapForList = (item, map) -> {
          String url = ((UploadedSound) item).soundURL();
          File f = ((UploadedSound) item).soundFile();
          map.put("Sound Size", toK_str(fileSize(f)));
          if (fileSize(f) > 0)
            map.put("Test Sound", new HTML(ahref(url, "Test Sound")));
        };
        IVF2 massageItemMapForUpdate_old = cc.massageItemMapForUpdate;
        cc.massageItemMapForUpdate = (item, map) -> {
          cc.massageItemMapForUpdate_fallback(massageItemMapForUpdate_old, item, map);
          String base64 = (String) map.get("file_base64");
          print("Got base64 data: " + l(base64));
          if (nempty(base64)) {
            File f = ((UploadedSound) item).soundFile();
            saveFileVerbose(f, base64decode(base64));
          }
          map.remove("file_base64");
        };
      }
      if (c == UploadedFile.class) {
        cc.fieldHelp("name", "Also used as file name when downloading", "mimeType", "Content type (MIME type) for this file (optional)");
        cc.massageItemMapForList = (item, map) -> {
          String url = ((UploadedFile) item).downloadURL();
          File f = ((UploadedFile) item).theFile();
          map.put("File Size", toK_str(fileSize(f)));
          if (fileSize(f) > 0)
            map.put("Download", new HTML(ahref(url, "Download")));
        };
        IVF2 massageItemMapForUpdate_old = cc.massageItemMapForUpdate;
        cc.massageItemMapForUpdate = (item, map) -> {
          cc.massageItemMapForUpdate_fallback(massageItemMapForUpdate_old, item, map);
          String base64 = (String) map.get("file_base64");
          print("Got base64 data: " + l(base64));
          if (nempty(base64)) {
            File f = ((UploadedFile) item).theFile();
            saveFileVerbose(f, base64decode(base64));
          }
          map.remove("file_base64");
        };
      }
      if (c == Worker.class) {
        cc.massageItemMapForList = (item, map) -> {
          AbstractBotImage image = ((Worker) item).image.get();
          if (image != null)
            map.put("Image Preview", new HTML(himg(image.imageURL(), "style", hcrud_imagePreviewStyle())));
        };
      }
      if (c == Avatar.class) {
        cc.fieldHelp("shift", "hours when avatar is active, e.g. 8-18 (leave empty if always on shift, put 0-0 if never on shift)");
        cc.massageItemMapForList = (item, map) -> {
          map.put("On Shift Now", ((Avatar) item).onShift());
        };
      }
      return cc;
    }

    public Map<Class, String> crudHelp() {
      return litmap(DeliveredDomain.class, "This list is filled by the bot with the domains it was delivered on. " + "Some may be bogus, we write down whatever the browser sends.");
    }

    public void saveDeliveredDomain(String domain) {
      if (empty(domain))
        return;
      uniqCI(DeliveredDomain.class, "domain", beforeColonOrAll(domain));
    }

    public void cleanConversations() {
      withDBLock(new Runnable() {

        public void run() {
          try {
            cdelete(filter(list(Conversation.class), c -> l(c.msgs) <= 1 && elapsedSeconds_timestamp(c.created) >= 60 & c.lastPing == 0));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "cdelete(filter(list(Conversation), c -> l(c.msgs) <= 1\r\n        && elapsedSec...";
        }
      });
    }

    public void deleteDeliveredDomains() {
      cdelete(DeliveredDomain.class);
    }

    public Object serveThoughts(Req req) {
      HTMLFramer1 framer = new HTMLFramer1();
      framer.addInHead(hsansserif() + hmobilefix());
      framer.add(div_floatRight(hbutton("Reload", "onclick", "location.reload()")));
      framer.add(h2("Bot Thoughts"));
      if (req.conv == null)
        framer.add("No conversation");
      else {
        framer.add(p("Conversation cookie: " + req.conv.cookie));
        Conversation conv = req.conv;
        framer.add(h3("Stack"));
        framer.add(empty(conv.stack) ? p("empty") : ol(lmap(__61 -> htmlEncode2_gen(__61), reversed(conv.stack))));
      }
      return framer.render();
    }

    public Object serveSearch(Req req) {
      makeFramer(req);
      HTMLFramer1 framer = req.framer;
      framer.add("Search here");
      return framer.render();
    }

    transient public boolean debug = false;

    public Domain findDomainObj(String domain) {
      Domain domainObj = conceptWhereCI(Domain.class, "domainAndPath", domain);
      if (domainObj == null)
        domainObj = defaultDomain();
      return domainObj;
    }

    public Domain defaultDomain() {
      return uniqCI(Domain.class, "domainAndPath", "<default>");
    }

    transient public int longPollTick = 200;

    transient public int longPollMaxWait = 1000 * 30;

    transient public int activeConversationSafetyMargin = 30000;

    transient public Set<String> specialButtons = litciset("Cancel", "Back", "Abbrechen", "Zurück");

    public String dbStats() {
      Collection<Conversation> all = list(Conversation.class);
      int nRealConvos = countPred(all, c -> l(c.msgs) > 1);
      return nConversations(nRealConvos);
    }

    public String realPW() {
      return loadTextFileOrCreateWithRandomID(realPWFile());
    }

    public File realPWFile() {
      return secretProgramFile("password.txt");
    }

    public String serveAuthForm(String redirect) {
      redirect = dropParamFromURL(redirect, "logout");
      if (empty(redirect))
        redirect = baseLink + "/";
      return hhtml(hhead(htitle(botName + ": Log-In") + hsansserif() + hmobilefix()) + hbody(hfullcenter(authFormHeading() + hpostform(hhidden("redirect", redirect) + tag("table", (enableUsers ? tr(td("User:") + td(hinputfield("user")) + td()) : "") + tr(td("Password:") + td(hpassword("pw")) + td(hsubmit("Log in")))), "action", baseLink) + (!showTalkToBotLink ? "" : p(ahref(baseLink + "/demo", "Talk to bot"))) + (!showRegisterLink ? "" : p(hbuttonLink(baseLink + "/register", "Register as new user"))) + authFormMoreContent())));
    }

    public String authFormHeading() {
      return h3_htmlEncode(adminName);
    }

    public String authFormMoreContent() {
      return "";
    }

    public String leadsToCSV(Collection<Lead> leads) {
      List<String> fields = ciContentsIndexedList();
      List<List> rows = new ArrayList();
      for (Lead lead : unnull(leads)) {
        List row = new ArrayList();
        for (Map.Entry<? extends String, ? extends Object> __21 : _entrySet(unnull(mapPlus_inFront((Map<String, Object>) (Map) lead.answers, "Date", formatLocalDateWithMinutes(lead.date.date), "Domain", lead.domain.get(), "Conversation ID", conceptID(lead.conversation.get()))))) {
          String key = __21.getKey();
          Object val = __21.getValue();
          int idx = fields.indexOf(key);
          if (idx < 0)
            idx = addAndReturnIndex(fields, key);
          listSet(row, idx, val, "");
        }
        rows.add(row);
      }
      return formatCSVFileForExcel2(itemPlusList(fields, rows));
    }

    public String countryCodeOptions(Conversation conv) {
      Collection<String> countryCodes = putSetElementsFirst(keys(countryDialCodesMultiMap()), splitAtComma_trim(settings().preferredCountryCodes));
      String selected = dialCodeStringForCountryCode(conv.country);
      return mapToLines(c -> {
        List<CountryDialCode> cdc = countryDialCodesMultiMap().get(c);
        String text = nempty(cdc) ? c + " [" + joinWithComma(collectSorted("countryCode", cdc)) + "]" : c;
        return tag("option", text, "value", c, "selected", eq(c, selected) ? html_valueLessParam() : null);
      }, itemPlus("", countryCodes));
    }

    public List<BotStep> addTypingDelays(List<BotStep> steps) {
      return concatMap(steps, step -> {
        double delay = step.preTypingDelay();
        if (delay <= 0)
          return ll(step);
        return ll(new BotSendTyping(), new BotPause(delay), step);
      });
    }

    public BotMessage messageForPurpose(String specialPurpose) {
      return conceptWhere(BotMessage.class, "specialPurpose", specialPurpose);
    }

    public Object serveLeadsAPI(Object req) {
      Map<String, String> headers = (Map<String, String>) (rcall("headers", req));
      Map<String, String> params = (Map<String, String>) (get("params", req));
      String tenantID = params.get("tenantID");
      if (empty(tenantID))
        return serveJSONError("Empty tenantID");
      String pw = params.get("pw");
      if (empty(pw))
        pw = dropPrefix_trim("Bearer ", headers.get("Authorization"));
      if (empty(pw))
        return serveJSONError("Empty password");
      Domain domain = conceptWhere(Domain.class, "tenantID", tenantID);
      if (domain == null)
        return serveJSONError("Tenant ID not found");
      if (neq(domain.password, pw))
        return serveJSONError("Bad passsword");
      Collection<Lead> leads = conceptsWhere(Lead.class, "domain", domain);
      return serveJSON(map(leads, lead -> {
        Map map = litorderedmap("tenantID", tenantID, "leadID", lead.id, "domain", str(lead.domain), "date", formatLocalDateWithSeconds(lead.created), "data", lead.answers);
        return map;
      }));
    }

    public Object serveJSONError(String error) {
      return serveJSON(litorderedmap("error", error));
    }

    public String botImageForDomain(Domain domainObj) {
      String botImg = imageSnippetURLOrEmptyGIF(chatHeaderImageID);
      if (domainObj != null && domainObj.botImage.has())
        botImg = domainObj.botImage.get().imageURL();
      else if (defaultDomain().botImage.has())
        botImg = defaultDomain().botImage.get().imageURL();
      return botImg;
    }

    public String simulateDomainLink(String domain) {
      return appendQueryToURL(baseLink + "/demo", "_botConfig", makePostData("domain", domain), "_newConvCookie", 1, "_autoOpenBot", 1);
    }

    public String simulateScriptLink(BotStep script) {
      return appendQueryToURL(baseLink + "/demo", "_botConfig", makePostData("mainScript", script.id), "_newConvCookie", 1, "_autoOpenBot", 1);
    }

    public Scorer consistencyCheckResults() {
      if (consistencyCheckResults == null)
        consistencyCheckResults = doConsistencyChecks();
      return consistencyCheckResults;
    }

    public Scorer doConsistencyChecks() {
      Scorer scorer = scorerWithSuccessesAndErrors();
      for (UserKeyword uk : list(UserKeyword.class)) try {
        localConsistencyCheck(uk, scorer);
      } catch (Throwable e) {
        scorer.addError(htmlEncode2(str(e)));
      }
      try {
        globalConsistencyCheck(scorer);
      } catch (Throwable e) {
        scorer.addError(htmlEncode2(str(e)));
      }
      return scorer;
    }

    public void localConsistencyCheck(UserKeyword uk, Scorer scorer) {
      String patHTML = span_title(str(uk.parsedPattern()), htmlEncode2(uk.pattern));
      String item = "[Entry " + ahref(conceptLink(uk), uk.id) + "] ";
      for (String input : unnull(uk.examples)) {
        boolean ok = uk.matchWithTypos(input);
        scorer.add(ok, ok ? item + "Example OK: " + patHTML + " => " + htmlEncode2(quote(input)) : item + "Example doesn't match pattern: " + patHTML + " => " + htmlEncode2(quote(input)));
      }
      for (String input : unnull(uk.counterexamples)) {
        boolean ok = !uk.matchWithTypos(input);
        scorer.add(ok, ok ? item + "Counterexample OK: " + patHTML + " => " + htmlEncode2(quote(input)) : item + "Counterexample matches pattern: " + patHTML + " => " + htmlEncode2(quote(input)));
      }
    }

    public void globalConsistencyCheck(Scorer scorer) {
      List<UserKeyword> list = concatLists(enabledUserKeywordsForPriority(true), enabledUserKeywordsForPriority(false));
      for (UserKeyword uk : list) for (String example : unnull(uk.examples)) {
        String item1 = ahref(conceptLink(uk), uk.id);
        UserKeyword found = firstThat(list, uk2 -> uk2.matchWithTypos(example));
        if (found == null)
          continue;
        if (found == uk)
          scorer.addOK("[Entry " + item1 + "] Global check OK for input " + htmlEncode2(quote(example)));
        else {
          String item2 = ahref(conceptLink(found), found.id);
          String items = "[Entries " + item1 + " and " + item2 + "] ";
          scorer.addError(items + "Input " + htmlEncode2(quote(example)) + " shadowed by pattern: " + htmlEncode2(quote(found.pattern)) + ". Try reducing precedence value of entry " + item2 + " or increasing precedence value of entry " + item1);
        }
      }
    }

    static public Collection<UserKeyword> enabledUserKeywordsForPriority(boolean priority) {
      return sortByFieldDesc("precedence", conceptsWhere(UserKeyword.class, onlyNonNullParams("priority", priority)));
    }

    public boolean handleGeneralUserInput(Conversation conv, Msg msg, Boolean priority) {
      for (UserKeyword qa : enabledUserKeywordsForPriority(priority)) {
        if (qa.enabled && qa.matchWithTypos(msg.text)) {
          print("Matched pattern: " + qa.pattern + " / " + msg.text);
          conv.noteEvent(new EvtMatchedUserKeyword(qa, msg));
          conv.callSubroutine(qa.action.get());
          conv.scheduleNextStep();
          return true;
        }
      }
      return false;
    }

    public void didntUnderstandUserInput(Conversation conv, Msg msg) {
    }

    transient public Settings settings_cache;

    public Settings settings() {
      if (settings_cache == null)
        settings_cache = settings_load();
      return settings_cache;
    }

    public Settings settings_load() {
      return conceptWhere(Settings.class);
    }

    public String displayTextHelp() {
      return "Text to show to user (can include HTML and " + targetBlank(baseLink + "/emojis", "emojis") + ")";
    }

    public void botActions() {
      Lock __7 = lockWhileDoingBotActions ? dbLock() : null;
      lock(__7);
      try {
        while (licensed()) {
          ScheduledAction action = lowestConceptByField(ScheduledAction.class, "time");
          if (action == null)
            break;
          if (action.time > now()) {
            doAfter(100, rstBotActions);
            break;
          }
          cdelete(action);
          print("Executing action " + action);
          try {
            action.run();
          } catch (Throwable __e) {
            _handleException(__e);
          }
        }
      } finally {
        unlock(__7);
      }
    }

    public void addScheduledAction(ScheduledAction action) {
      addScheduledAction(action, 0);
    }

    public void addScheduledAction(ScheduledAction action, long delay) {
      action.time = now() + delay;
      registerConcept(action);
      rstBotActions.trigger();
    }

    transient public ThreadLocal<Out> out = new ThreadLocal();

    transient public ThreadLocal<Conversation> conv = new ThreadLocal();

    transient public long lastConversationChange = now();

    public void makeIndices() {
      indexConceptFieldDesc(ScheduledAction.class, "time");
      indexConceptFieldCI(Domain.class, "domainAndPath");
      indexConceptFieldCI(DeliveredDomain.class, "domain");
      indexConceptFieldCI(CannedAnswer.class, "hashTag");
      indexConceptFieldCI(Language.class, "languageName");
      indexConceptField(Lead.class, "domain");
      indexConceptField(ConversationFeedback.class, "domain");
      indexConceptField(UploadedFile.class, "liveURI");
    }

    public void startDB() {
      db();
    }

    public void pWebChatBot() {
      db_mainConcepts().storeBaseClassesInStructure = storeBaseClassesInStructure || storeBaseClassesInStructure;
      startDB();
      indexConceptFields(Conversation.class, "cookie", Conversation.class, "worker", Conversation.class, "lastPing", Worker.class, "loginName", AuthedDialogID.class, "cookie");
      db_mainConcepts().miscMapPut(DynNewBot2.class, this);
      indexSingletonConcept(Settings.class);
      uniq(Settings.class);
      makeIndices();
      indexAllLinkableClasses();
      uniq(BotSaveLead.class);
      uniq(BotSaveFeedback.class);
      uniq(BotClearStack.class);
      uniq(BotEndConversation.class);
      uniq(BotDoNothing.class);
      uniq(BotIdleMode.class);
      uniq(BotNewDialog.class);
      if (enableUndoStates)
        uniq(BotGoBack.class);
      if (enableAvatars)
        uniq(RandomAvatar.class);
    }

    public void addReplyToConvo(Conversation conv, IF0<String> think) {
      out.set(new Out());
      String reply = "";
      try {
        reply = think.get();
      } catch (Throwable __e) {
        _handleException(__e);
      }
      Msg msg = new Msg(false, reply);
      msg.out = out.get();
      conv.add(msg);
    }

    public Msg msgFromThinkFunction(IF0<String> think) {
      out.set(new Out());
      String reply = "";
      try {
        reply = think.get();
      } catch (Throwable __e) {
        _handleException(__e);
      }
      Msg msg = new Msg(false, reply);
      msg.out = out.get();
      return msg;
    }

    public Object withHeader(String html) {
      return withHeader(subBot_noCacheHeaders(subBot_serveHTML(html)));
    }

    public Object withHeader(Object response) {
      call(response, "addHeader", "Access-Control-Allow-Origin", "*");
      return response;
    }

    public String renderMessageText(String text, boolean htmlEncode) {
      text = trim(text);
      if (eqic(text, "!rate conversation"))
        text = "Rate this conversation";
      if (htmlEncode)
        text = htmlEncode2(text);
      text = nlToBr(text);
      return html_emojisToUnicode(text);
    }

    public void renderMessages(Conversation conv, StringBuilder buf, List<Msg> msgs) {
      renderMessages(conv, buf, msgs, msg -> msg == last(msgs));
    }

    public void renderMessages(Conversation conv, StringBuilder buf, List<Msg> msgs, IF1<Msg, Boolean> showButtons) {
      if (empty(msgs))
        return;
      ChatRenderer renderer = makeChatRenderer(currentReq.get());
      for (Msg m : msgs) {
        boolean showTheButtons = showButtons.get(m);
        if (m.fromUser || neqOneOf(m.text, "-", "") || showTheButtons && m.out != null && nempty(m.out.buttons))
          renderer.appendMsg(conv, buf, m, showTheButtons);
        if (showTheButtons) {
          buf.append(hscript(botMod().phoneNumberSpecialInputField ? "$(\"#chat_telephone, .iti\").hide(); $(\"#chat_message\").show().prop('disabled', false).focus();" : "$(\"#chat_message\").prop('disabled', false).focus();"));
          if (m.out != null && nempty(m.out.javaScript))
            buf.append(hscript(m.out.javaScript));
        }
      }
    }

    abstract public class ChatRenderer {

      abstract public void appendMsg(Conversation conv, StringBuilder buf, Msg m, boolean showButtons);

      public Conversation conv;

      public String id;

      public Msg m;

      public String html;

      public String name;

      public String time;

      public String text;

      public boolean bot = false;

      public Worker fromWorker;

      public Out out;

      public List<String> labels;

      public boolean useTrick = false;

      public String author;

      public String imgURL;

      public void prepare(Conversation conv, Msg m) {
        this.conv = conv;
        this.m = m;
        html = renderMessageText(m.text, shouldHtmlEncodeMsg(m));
        name = m.fromUser ? defaultUserName() : botName;
        time = formatTime(m.time);
        text = html;
        modifyTextForRendering();
        bot = !m.fromUser;
        fromWorker = m.fromWorker;
        out = m.out;
        labels = m.labels;
        useTrick = ariaLiveTrick;
        id = randomID();
        author = fromWorker != null ? htmlEncode2(fromWorker.displayName) : botName;
        if (bot) {
          if (fromWorker != null && fileExists(workerImageFile(fromWorker.id)))
            imgURL = fullRawLink("worker-image/" + fromWorker.id);
          else
            imgURL = conv.botImg();
        }
      }

      public void modifyTextForRendering() {
        if (eqic(text, "!back"))
          text = unicode_undoArrow();
      }

      abstract public String renderMultipleChoice(List<String> buttons, Collection<String> selections, String multipleChoiceSeparator);

      public String renderSingleChoice(List<String> buttons) {
        List<String> out = new ArrayList();
        for (int i = 0; i < l(buttons); i++) {
          String code = buttons.get(i);
          String text = replaceButtonText(code);
          String userInput = htmldecode_dropAllTags(text);
          List<String> split = splitAtVerticalBar(text);
          if (l(split) == 2) {
            userInput = second(split);
            text = code = first(split);
          }
          out.add(hbuttonOnClick_returnFalse(text, "submitAMsg(" + jsQuote(userInput) + ")", "class", "chatbot-choice-button automated-message", "title", eq(code, text) ? null : code));
          if (!specialButtons.contains(code) && i + 1 < l(buttons) && specialButtons.contains(buttons.get(i + 1)))
            out.add("&nbsp;&nbsp;");
        }
        return lines(out);
      }
    }

    public class ChatRendererSahilStyle extends ChatRenderer {

      public void appendMsg(Conversation conv, StringBuilder buf, Msg m, boolean showButtons) {
        prepare(conv, m);
        List<String> div = new ArrayList();
        List<String> inMessage = new ArrayList();
        List<String> afterMessage = new ArrayList();
        if (!bot)
          imgURL = "/pays5/imgs/icons/avatar.svg";
        if (nempty(imgURL)) {
          div.add(div("", "class", "bg-img", "role", "img", "aria-labelledby", m.fromUser ? "Avatar" : "Bot", "style", "background-image: url('" + imgURL + "')"));
        }
        if (showButtons)
          appendButtons(inMessage, afterMessage, m.out);
        div.add(span(text + lines(inMessage), "class", "message"));
        div.add(span(time, "class", "message-timestamp"));
        buf.append(div(lines(div) + lines(afterMessage), "class", "message-wrapper" + stringUnless(bot, " user"))).append("\n");
      }

      public void appendButtons(List<String> inMessage, List<String> afterMessage, Out out) {
        String placeholder = out == null ? "" : unnull(out.placeholder);
        String defaultInput = out == null ? "" : unnull(out.defaultInput);
        inMessage.add(hscript("chatBot_setInput(" + jsQuote(defaultInput) + ", " + jsQuote(placeholder) + ");"));
        if (out == null)
          return;
        List<String> buttons = out.buttons;
        if (empty(buttons))
          return;
        String buttonsHtml;
        if (out.multipleChoice)
          inMessage.add(span(renderMultipleChoice(buttons, text_multipleChoiceSplit(out.defaultInput, out.multipleChoiceSeparator), out.multipleChoiceSeparator), "class", "select-options"));
        else if (out.radioButtons)
          inMessage.add(span(renderRadioButtons(buttons, out.defaultInput), "class", "select-options"));
        else
          afterMessage.add(div(renderSingleChoice(buttons), "class", "automated-messages"));
      }

      public String renderMultipleChoice(List<String> buttons, Collection<String> selections, String multipleChoiceSeparator) {
        Set<String> selectionSet = asCISet(selections);
        String rand = randomID();
        String className = "chat_multiplechoice_" + rand;
        String allCheckboxes = "$(\"." + className + "\")";
        if (eq(multipleChoiceSeparator, ","))
          multipleChoiceSeparator += " ";
        return joinWithBR(map(buttons, name -> span(span("", "class", "square-box") + " " + name, "class", className + " option" + stringIf(contains(selectionSet, name), " selected"), "data-value", name))) + "<br>" + hbuttonOnClick_returnFalse("OK", "submitMsg()", "class", "btn btn-ok") + hscript(replaceDollarVars("\r\n          $(\".$className *, .$className\").click(function(e) {\r\n            e.stopImmediatePropagation(); // prevent double firing\r\n\r\n            // toggle check box\r\n            console.log(\"Target: \" + e.target);\r\n            $(e.target).closest(\".option\").toggleClass(\"selected\");\r\n\r\n            // update message\r\n            var theList = $('.$className.selected').map(function() { return this.dataset.value; }).get();\r\n            console.log('theList: ' + theList);\r\n            $('#chat_message').val(theList.join($sep));\r\n          });\r\n          //$(\".$className *\").click(function(e) { e.stopPropagation(); });\r\n        ", "className", className, "sep", jsQuote(multipleChoiceSeparator)));
      }

      public String renderRadioButtons(List<String> buttons, String selection) {
        String rand = randomID();
        String className = "chat_radio_" + rand;
        String allRadioButtons = "$(\"." + className + "\")";
        return joinWithBR(map(buttons, name -> span(span("", "class", "square-box round") + " " + name, "class", className + " option" + stringIf(eqic(selection, name), " selected"), "data-value", name))) + (quickRadioButtons ? "" : "<br>" + hbuttonOnClick_returnFalse("OK", "submitMsg()", "class", "btn btn-ok")) + hscript(replaceDollarVars("\r\n          $(\".$className *, .$className\").click(function(e) {\r\n            e.stopImmediatePropagation(); // prevent double firing\r\n            var option = $(e.target).closest(\".option\");\r\n            \r\n            // clear other radio buttons\r\n            $(\".$className\").removeClass(\"selected\");\r\n\r\n            // activate radio button\r\n            option.addClass(\"selected\");\r\n\r\n            // update message\r\n            $('#chat_message').val(option[0].dataset.value);\r\n\r\n            if ($quickRadioButtons)\r\n              submitMsg();\r\n          });\r\n          //$(\".$className *\").click(function(e) { e.stopPropagation(); });\r\n        ", "className", className, "quickRadioButtons", quickRadioButtons));
      }
    }

    public class ChatRendererHusainStyle extends ChatRenderer {

      public void appendMsg(Conversation conv, StringBuilder buf, Msg m, boolean showButtons) {
        prepare(conv, m);
        String tag = useTrick ? "div" : "span";
        if (bot) {
          if (nempty(m.text)) {
            if (fromWorker != null)
              buf.append("<div class=\"chat_botname\"><p>" + author + "</p>");
            buf.append("<" + tag + " class=\"chat_msg_item chat_msg_item_admin\"" + (useTrick ? " id=\"" + id + "\" aria-live=\"polite\" tabindex=\"-1\"" : "") + ">");
            if (nempty(imgURL))
              buf.append("\r\n              <div class=\"chat_avatar\">\r\n                <img src=\"$IMG\"/>\r\n              </div>".replace("$IMG", imgURL));
            buf.append("<span class=\"sr-only\">" + (fromWorker != null ? "" : botName + " ") + "says</span>");
            buf.append(text);
            buf.append("</" + tag + ">");
            if (fromWorker != null)
              buf.append("</div>");
            if (useTrick)
              buf.append(hscript("$('#" + id + "').focus();"));
          }
        } else
          buf.append(("\r\n          <span class=\"sr-only\">You say</span>\r\n          <" + tag + " class=\"chat_msg_item chat_msg_item_user\"" + (useTrick ? " aria-live=\"polite\"" : "") + ">$TEXT</" + tag + ">\r\n        ").replace("$TEXT", text));
        if (nempty(labels))
          buf.append(span(join(" &nbsp; ", map(labels, lbl -> span("&nbsp; " + lbl + " &nbsp;"))), "class", "labels chat_msg_item chat_msg_item_user")).append("\n");
        if (showButtons)
          appendButtons(buf, out, null);
      }

      public void appendButtons(StringBuilder buf, Out out, Set<String> buttonsToSkip) {
        String placeholder = out == null ? "" : unnull(out.placeholder);
        String defaultInput = out == null ? "" : unnull(out.defaultInput);
        if (out != null && out.disableInput)
          buf.append(hscript(jsDisableInputField()));
        else
          buf.append(hscript("chatBot_setInput(" + jsQuote(defaultInput) + ", " + jsQuote(placeholder) + ");"));
        if (out == null)
          return;
        List<String> buttons = listMinusSet(out.buttons, buttonsToSkip);
        if (empty(buttons))
          return;
        String buttonsHtml;
        if (out.multipleChoice)
          buttonsHtml = renderMultipleChoice(buttons, text_multipleChoiceSplit(out.defaultInput, out.multipleChoiceSeparator), out.multipleChoiceSeparator);
        else
          buttonsHtml = renderSingleChoice(buttons);
        buf.append(span(buttonsHtml, "class", "chat_msg_item chat_msg_item_admin chat_buttons" + stringIf(!out.multipleChoice, " single-choice")));
      }

      public String renderMultipleChoice(List<String> buttons, Collection<String> selections, String multipleChoiceSeparator) {
        Set<String> selectionSet = asCISet(selections);
        String rand = randomID();
        String className = "chat_multiplechoice_" + rand;
        String allCheckboxes = "$(\"." + className + "\")";
        return joinWithBR(map(buttons, name -> hcheckbox("", contains(selectionSet, name), "value", name, "class", className) + " " + name)) + "<br>" + hbuttonOnClick_returnFalse("OK", "submitMsg()", "class", "btn btn-ok") + hscript(allCheckboxes + ".change(function() {" + " var theList = $('." + className + ":checkbox:checked').map(function() { return this.value; }).get();" + "  console.log('theList: ' + theList);" + "  $('#chat_message').val(theList.join(" + jsQuote(multipleChoiceSeparator) + "));" + "});");
      }
    }

    public String replaceButtonText(String s) {
      if (standardButtonsAsSymbols) {
        if (eqicOneOf(s, "back", "zurück"))
          return unicode_undoArrow();
        if (eqicOneOf(s, "cancel", "Abbrechen"))
          return unicode_crossProduct();
      }
      return s;
    }

    public void appendDate(StringBuilder buf, String date) {
      buf.append("\r\n    <div class=\"chat-box-single-line\">\r\n      <abbr class=\"timestamp\">DATE</abbr>\r\n    </div>".replace("DATE", date));
    }

    public boolean lastUserMessageWas(Conversation conv, String message) {
      Msg m = last(conv.msgs);
      return m != null && m.fromUser && eq(m.text, message);
    }

    public String formatTime(long time) {
      return timeInTimeZoneWithOptionalDate_24(timeZone, time);
    }

    public String formatDialog(String id, List<Msg> msgs) {
      List<String> lc = new ArrayList();
      for (Msg m : msgs) lc.add(htmlencode((m.fromUser ? "> " : "< ") + m.text));
      return id + ul(lc);
    }

    public Conversation getConv(final String cookie) {
      return uniq(Conversation.class, "cookie", cookie);
    }

    public String errorMsg(String msg) {
      return hhtml(hhead_title("Error") + hbody(hfullcenter(msg + "<br><br>" + ahref(jsBackLink(), "Back"))));
    }

    public String defaultUserName() {
      return "You";
    }

    public boolean botOn() {
      return true;
    }

    public boolean botAutoOpen(Domain domain) {
      return getDomainValue(domain, d -> d.autoOpenBot, false);
    }

    public File workerImageFile(long id) {
      return id == 0 ? null : javaxDataDir("adaptive-bot/images/" + id + ".jpg");
    }

    public long activeConversationTimeout() {
      return longPollMaxWait + activeConversationSafetyMargin;
    }

    public AuthedDialogID authObject(String cookie) {
      AuthedDialogID auth = empty(cookie) ? null : conceptWhere(AuthedDialogID.class, "cookie", cookie);
      printVars_str("cookie", cookie, "auth", auth);
      return auth;
    }

    public boolean anyInterestingMessages(List<Msg> msgs, boolean workerMode) {
      return any(msgs, m -> m.fromUser == workerMode);
    }

    public boolean shouldHtmlEncodeMsg(Msg msg) {
      return msg.fromUser;
    }

    public void calcCountry(Conversation c) {
      cset(c, "country", "");
      getCountry(c);
    }

    public String getCountry(Conversation c) {
      if (empty(c.country) && nempty(c.ip))
        cset(c, "country", ipToCountry2020_safe(c.ip));
      return or2(c.country, "?");
    }

    public void initAvatar(Conversation c) {
      if (enableAvatars && !c.avatar.has() && c.domainObj.has()) {
        AbstractAvatar a = c.domainObj.get().avatar.get();
        Avatar avatar = a == null ? null : a.getActualAvatar();
        cset(c, "avatar", avatar);
      }
    }

    public void noteConversationChange() {
      lastConversationChange = now();
    }

    public String template(String hashtag, Object... params) {
      return replaceSquareBracketVars(getCannedAnswer(hashtag), params);
    }

    public String getCannedAnswer(String hashTag) {
      return getCannedAnswer(hashTag, null);
    }

    public String getCannedAnswer(String hashTag, Conversation conv) {
      return hashTag;
    }

    public List<String> text_multipleChoiceSplit(String input, String multipleChoiceSeparator) {
      return trimAll(splitAt(input, dropSpaces(multipleChoiceSeparator)));
    }

    public Msg lastBotMsg(List<Msg> l) {
      return lastThat(l, msg -> !msg.fromUser);
    }

    public File uploadedImagesDir() {
      return programDir("uploadedImages");
    }

    public File uploadedSoundsDir() {
      return programDir("uploadedSounds");
    }

    public File uploadedFilesDir() {
      return programDir("uploadedFiles");
    }

    public String defaultNotificationSound() {
      return "https://botcompany.de/files/1400403/notification.mp3";
    }

    public String convertToAbsoluteURL(String url) {
      if (isURL(url))
        return url;
      String domain = settings().mainDomainName;
      return empty(domain) ? url : "https://" + domain + addSlashPrefix(url);
    }

    public String absoluteAdminURL() {
      return convertToAbsoluteURL(baseLink);
    }

    public void editMasterPassword() {
      if (!confirmOKCancel("Are you sure? This will reveal the password."))
        return;
      JTextField tf = jtextfield(realPW());
      showFormTitled2(botName + " master password", "Password", tf, new Runnable() {

        public void run() {
          try {
            String pw = gtt(tf);
            if (empty(pw))
              infoBox("Empty password, won't save");
            else {
              saveTextFile(realPWFile(), pw);
              infoBox("Saved new password for " + adminName);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "String pw = gtt(tf);\r\n        if (empty(pw)) infoBox(\"Empty password, won't s...";
        }
      });
    }

    public void editMailSenderInfo() {
      JTextField tf = jtextfield(realPW());
      inputText("Mail sender info", mailSenderInfo, new VF1<String>() {

        public void get(String mailSenderInfo) {
          try {
            setField("mailSenderInfo", mailSenderInfo);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "setField(+mailSenderInfo);";
        }
      });
    }

    public Object handleAuth(Req req, String cookie) {
      String pw = trim(req.params.get("pw"));
      if (nempty(pw) && nempty(cookie)) {
        Domain authDomain;
        if (eq(pw, realPW()))
          cset(uniq(AuthedDialogID.class, "cookie", cookie), "restrictedToDomain", null, "master", true);
        else if ((authDomain = conceptWhere(Domain.class, "password", pw)) != null)
          cset(uniq(AuthedDialogID.class, "cookie", cookie), "restrictedToDomain", authDomain, "master", false);
        else
          return errorMsg("Bad password, please try again");
        String redirect = req.params.get("redirect");
        if (nempty(redirect))
          return hrefresh(redirect);
      }
      return null;
    }

    public String loggedInUserDesc(Req req) {
      return req.masterAuthed ? "super user" : htmlEncode2(req.authDomain);
    }

    public Object redirectToHttps(Req req) {
      if (!req.webRequest.isHttps())
        return subBot_serveRedirect("https://" + req.webRequest.domain() + req.uri + htmlQuery(req.params));
      return null;
    }

    public void startMainScript(Conversation conv) {
      initAvatar(conv);
      Domain domain = conv.domainObj.get();
      if (domain == null) {
        botMod().addReplyToConvo(conv, () -> "Error: No domain set");
        return;
      }
      BotStep seq = getConcept(BotStep.class, parseLong(mapGet(conv.botConfig, "mainScript")));
      if (seq == null)
        seq = domain.mainScript.get();
      if (seq == null) {
        botMod().addReplyToConvo(conv, () -> "Error: No main script set for " + htmlEncode2(str(domain)));
        return;
      }
      conv.callSubroutine(seq);
      if (enableUndoStates)
        conv.addUndoState();
      conv.scheduleNextStep();
    }

    public boolean isRequestFromBot(Req req) {
      return false;
    }

    public String modifyTemplateBeforeDelivery(String html, Req req) {
      return html;
    }

    public String headingForReq(Req req) {
      return null;
    }

    public Object serveHomePage() {
      return null;
    }

    public void possiblyTriggerNewDialog(Conversation conv) {
      if (empty(conv.msgs) && conv.newDialogTriggered < conv.archiveSize()) {
        cset(conv, "newDialogTriggered", conv.archiveSize());
        addScheduledAction(new OnNewDialog(conv));
      }
    }

    public String rewriteBotMessage(Conversation conv, String text) {
      if (!enableVars || conv == null)
        return text;
      text = html_evaluateIfTags(text, var -> eqic("true", print("if " + var + ": ", calcVar(conv, dropDollarPrefix(var)))));
      print("text", text);
      text = replaceDollarVars_dyn(text, var -> print("calcVar " + var, calcVar(conv, var)));
      return text;
    }

    public String calcVar(Conversation conv, String var) {
      if (conv == null)
        return null;
      {
        String val = syncGet(conv.answers, var);
        if (val != null)
          return val;
      }
      if (eqic(var, "botName") && conv.avatar.has())
        return conv.avatar.get().name;
      return null;
    }

    public String cssURL() {
      return serveSnippetURL(cssID);
    }

    public class RenderDialogTree {

      public Set<Concept> seen = new HashSet();

      public String render(BotStep step) {
        if (!seen.add(step))
          return "[see above] " + htmlEncode2(str(step));
        List<String> children = new ArrayList();
        if (step instanceof Sequence)
          for (Pair<Integer, BotStep> __0 : iterateWithIndex1(((Sequence) step).steps)) {
            int i = pairA(__0);
            BotStep step2 = pairB(__0);
            children.add("Step " + i + ": " + renderDialogTree(step2));
          }
        if (step instanceof BotOutgoingQuestion)
          for (Pair<String, BotStep> __1 : ((BotOutgoingQuestion) step).buttonsWithActions()) {
            String input = pairA(__1);
            BotStep step2 = pairB(__1);
            children.add("If user says " + b(htmlEncode2(quote(last(splitAtVerticalBar(input))))) + "<br><br> => " + (step2 == null ? "no action defined" : renderDialogTree(step2)));
          }
        return stepToHTMLFull(step) + ulIfNempty(children, "class", "dialogTree");
      }
    }

    public String stepToHTMLFull(BotStep step) {
      if (step == null)
        return "-";
      String link = conceptLink(step, currentReq.get());
      return ahref_unstyled(link, prependSquareBracketed(step.id)) + ahref(link, htmlEncode2_nlToBr(step.fullToString()));
    }

    public String renderDialogTree(BotStep step) {
      return new RenderDialogTree().render(step);
    }

    public ChatRenderer makeChatRenderer(Req req) {
      String botLayout = req.params.get("botLayout");
      String layout = or2(botLayout, defaultBotLayout());
      return eqic(layout, "sahil") ? new ChatRendererSahilStyle() : new ChatRendererHusainStyle();
    }

    public String defaultBotLayout() {
      return "husain";
    }

    public boolean allowedTemplateID(String id) {
      return false;
    }

    public double typingDelayForText(String text) {
      double perWord = settings().botTypingDelayPerWord;
      double x = settings().botTypingDelay;
      if (perWord != 0)
        x += countWords(dropHTMLTags(text)) * settings().botTypingDelayPerWord;
      double max = settings().botTypingMaxDelay;
      if (max != 0)
        x = min(x, max);
      return x;
    }

    public String nameOfBotSide(Conversation conv) {
      String __9 = calcVar(conv, "botName");
      if (!empty(__9))
        return __9;
      return "Representative";
    }

    public void addThingsAboveCRUDTable(Req req, Class c, List<String> aboveTable) {
    }

    public boolean checkPhoneNumber(String s) {
      return isValidInternationalPhoneNumber(s);
    }

    public void onNewLead(Lead lead) {
      for (String address : splitAtComma_trim(settings().mailLeadsTo)) try {
        String text = formatColonProperties(lead.answers);
        sendMailThroughScript(mailSenderInfo, "auto@botcompany.de", address, settings().leadMailSubject, text);
      } catch (Throwable e) {
        printStackTrace(e);
        appendToFile(programFile("mail-errors"), getStackTrace(e));
      }
    }

    public void doUndo(Conversation conv) {
      UndoState undoState = syncNextToLast(conv.undoStates);
      print("Undo state: " + undoState);
      if (undoState != null) {
        syncRemoveLast(2, conv.undoStates);
        conv.dropScheduledActions();
        syncReplaceCollection(conv.stack, undoState.stack);
        print("Stack after undo: " + conv.stack);
        conv.scheduleNextStep();
      }
    }

    public Object serveCRUD(Req req) {
      String uri = req.uri();
      List<Class> classes = crudClasses(req);
      List<Class> cmdClasses = req.masterAuthed ? botCmdClasses() : null;
      printVars_str("serveCRUD", "uri", uri, "classes", classes, "baseLink", baseLink);
      for (Class c : (Set<Class>) asSet(flattenList2(classes, DeliveredDomain.class, cmdClasses))) if (eq(uri, dropUriPrefix(baseLink, crudLink(c)))) {
        HCRUD crud = makeCRUD(c, req);
        return serveCRUD(req, c, crud);
      }
      return null;
    }

    public Object serveCRUD(Req req, Class c, HCRUD crud) {
      HTMLFramer1 framer = req.framer;
      Map<String, String> params = req.params();
      String help = mapGet(crudHelp(), c);
      if (nempty(help))
        framer.add(p(help));
      String json = crud.handleComboSearch(params);
      if (nempty(json))
        return serveText(json);
      List<String> aboveTable = new ArrayList();
      if (c == UserKeyword.class) {
        Scorer scorer = consistencyCheckResults();
        framer.add(p("Consistency check results: " + nTests(scorer.successes) + " OK, " + nErrors(scorer.errors)));
        if (nempty(scorer.errors))
          framer.add(ul(map(scorer.errors, e -> "Error: " + e)));
      }
      addThingsAboveCRUDTable(req, c, aboveTable);
      String baseTitle = framer.title;
      crud.makeFrame = (title, contents) -> {
        framer.title = joinNemptiesWithVBar(hTitleClean(title), baseTitle);
        return h1(title) + lines(aboveTable) + contents;
      };
      crud.processSortParameter(params);
      framer.add(crud.renderPage(params));
      framer.add(hjs_markRowMagic());
      return completeFrame(req);
    }

    public <A extends Concept> IF1<Collection<A>, Collection<A>> crudSearchFilter(Req req, HCRUD_Concepts<A> data, String query) {
      if (empty(query))
        return null;
      boolean debug = eq(req.get("searchDebug"), "1");
      HTMLFramer1 framer = req.framer;
      return objects -> {
        ScoredSearcher<A> searcher = new ScoredSearcher<>(query);
        if (debug) {
          if (framer != null)
            framer.add(hcomment(renderVars_struct("searcher", searcher)));
        }
        for (A a : unnull(objects)) {
          List<String> fields = allToString(values(allConceptFieldsAsMap(a)));
          fields.add(str(a.id));
          if (debug) {
            if (framer != null)
              framer.add(hcomment(renderVars_str("a", a, "fields", fields)));
          }
          searcher.put(a, fields);
        }
        return searcher.get();
      };
    }

    public boolean requestAuthed() {
      return currentReq.get() != null && currentReq.get().requestAuthed();
    }

    public String webSocketHeadStuff(Req req) {
      return hreconnectingWebSockets() + hjs("\r\n        var webSocketQuery = \"\";\r\n        var ws;\r\n        $(document).ready(function() {\r\n          ws = new ReconnectingWebSocket(((window.location.protocol === \"https:\") ? \"wss://\" : \"ws://\") + window.location.host + " + jsQuote(baseLink + req.uri) + " + webSocketQuery);\r\n          var wsReady = false;\r\n          ws.onopen = function(event) {\r\n            wsReady = true;\r\n            console.log(\"WebSocket ready!\");\r\n            ws.onmessage = " + js_evalOnWebSocketMessage() + ";\r\n          };\r\n        });\r\n      ");
    }
  }

  static public class ExecutedStep extends Concept {

    static final public String _fieldOrder = "step conversation msg";

    public Ref<BotStep> step = new Ref();

    public Ref<Conversation> conversation = new Ref();

    public Msg msg;
  }

  static public class InputHandled extends Concept {

    static final public String _fieldOrder = "input conversation msg inputHandler handled";

    public String input;

    public Ref<Conversation> conversation = new Ref();

    public Msg msg;

    public Ref inputHandler = new Ref();

    public boolean handled = false;
  }

  abstract static public class BotStep extends Concept {

    public String comment;

    public boolean run(Conversation conv) {
      return false;
    }

    public ScheduledAction nextStepAction(Conversation conv) {
      return new Action_NextStep(conv, conv.executedSteps);
    }

    public String fullToString() {
      return toString();
    }

    public double preTypingDelay() {
      return 0;
    }

    public boolean isUndoBoundary() {
      return false;
    }
  }

  static public class Sequence extends BotStep {

    public RefL<BotStep> steps = new RefL();

    public String toString() {
      return "Sequence " + quoteOr(comment, "(unnamed)") + spaceRoundBracketed(nSteps(steps));
    }

    public boolean run(Conversation conv) {
      syncAdd(conv.stack, new ActiveSequence(this));
      conv.change();
      return true;
    }
  }

  static public class BotRandomAction extends BotStep {

    public RefL<BotStep> actions = new RefL();

    public String toString() {
      return "Random Action " + appendBracketed(comment) + (empty(actions) ? " [empty]" : ": " + first(actions) + (l(actions) == 1 ? "" : " + " + n2(l(actions) - 1) + " more"));
    }

    public boolean run(Conversation conv) {
      BotStep step = random(actions);
      if (step == null)
        return true;
      return step.run(conv);
    }
  }

  static public class BotMessage extends BotStep {

    public String text;

    public String specialPurpose;

    public boolean disableInput = false;

    static public String _fieldOrder = "text specialPurpose";

    public String toString() {
      return toString(40);
    }

    public String toString(int shorten) {
      return "Message" + spacePlusRoundBracketedIfNempty(comment) + ": " + newLinesToSpaces2(shorten(text, shorten));
    }

    public String fullToString() {
      return toString(Integer.MAX_VALUE);
    }

    public boolean run(Conversation conv) {
      Msg msg = new Msg(false, text);
      msg.out = new Out();
      msg.out.disableInput = disableInput;
      conv.add(msg);
      return true;
    }

    public double preTypingDelay() {
      return botMod().typingDelayForText(text);
    }
  }

  abstract static public class AbstractBotImage extends BotStep {

    public String altText;

    public boolean run(Conversation conv) {
      botMod().addReplyToConvo(conv, () -> himgsrc(imageURL(), "title", altText, "alt", altText, "class", "chat_contentImage"));
      return true;
    }

    abstract public String imageURL();

    public double preTypingDelay() {
      return botMod().settings().botTypingDelay;
    }
  }

  static public class BotImage extends AbstractBotImage {

    public String imageURL, altText;

    static public String _fieldOrder = "imageURL";

    public String imageURL() {
      return imageURL;
    }

    public String toString() {
      return "Image" + spacePlusRoundBracketedIfNempty(comment) + ": " + imageURL;
    }
  }

  static public class UploadedImage extends AbstractBotImage {

    public String imageURL() {
      return botMod().convertToAbsoluteURL(botMod().baseLink + "/uploaded-image/" + id);
    }

    public File imageFile() {
      return newFile(botMod().uploadedImagesDir(), id + ".png");
    }

    public String toString() {
      return "Image" + spacePlusRoundBracketedIfNempty(altText) + spacePlusRoundBracketedIfNempty(comment);
    }

    public void delete() {
      if (concepts() == db_mainConcepts())
        deleteFile(imageFile());
      super.delete();
    }
  }

  static public class UploadedSound extends Concept {

    public String comment;

    public String soundURL() {
      return botMod().convertToAbsoluteURL(botMod().baseLink + "/uploaded-sound/" + id);
    }

    public File soundFile() {
      return newFile(botMod().uploadedSoundsDir(), id + ".mp3");
    }

    public String toString() {
      return "Sound" + spacePlusRoundBracketedIfNempty(comment);
    }

    public void delete() {
      if (concepts() == db_mainConcepts())
        deleteFile(soundFile());
      super.delete();
    }
  }

  static public class UploadedFile extends Concept {

    static final public String _fieldOrder = "name comment mimeType liveURI";

    public String name, comment, mimeType, liveURI;

    public String downloadURL() {
      return downloadURL(null);
    }

    public String downloadURL(String contentType) {
      return botMod().convertToAbsoluteURL(appendQueryToURL(botMod().baseLink + "/uploaded-file/" + id + (empty(name) ? "" : "/" + urlencode(name)), "ct", contentType));
    }

    public File theFile() {
      return newFile(botMod().uploadedFilesDir(), id + ".png");
    }

    public String toString() {
      return "File " + spacePlusRoundBracketedIfNempty(name) + spacePlusRoundBracketedIfNempty(comment);
    }

    public void delete() {
      if (concepts() == db_mainConcepts())
        deleteFile(theFile());
      super.delete();
    }
  }

  static public class BotDoNothing extends BotStep {

    public boolean run(Conversation conv) {
      return false;
    }

    public String toString() {
      return "Do nothing";
    }
  }

  static public class BotSendTyping extends BotStep {

    public boolean run(Conversation conv) {
      conv.botTyping = print("Bot typing", now());
      return true;
    }
  }

  static public class BotGoBack extends BotStep {

    public boolean run(Conversation conv) {
      botMod().doUndo(conv);
      return false;
    }

    public String toString() {
      return "Go back one step";
    }
  }

  static public class BotNewDialog extends BotStep {

    public boolean run(Conversation conv) {
      conv.newDialog();
      return false;
    }

    public String toString() {
      return "New dialog";
    }
  }

  static public class BotPause extends BotStep {

    public double seconds;

    public BotPause() {
    }

    public BotPause(double seconds) {
      this.seconds = seconds;
    }

    public boolean run(Conversation conv) {
      botMod().addScheduledAction(nextStepAction(conv), toMS(seconds));
      return false;
    }

    public String toString() {
      return "Pause for " + (seconds == 1 ? "1 second" : formatDouble(seconds, 1) + " seconds");
    }
  }

  static public class BotOutgoingQuestion extends BotStep implements IInputHandler {

    public String displayText;

    public String key;

    public String defaultValue;

    public String placeholder;

    public List<String> buttons;

    public boolean allowFreeText = true;

    public boolean multipleChoice = false;

    public boolean radioButtons = false;

    public String multipleChoiceSeparator = ", ";

    public boolean optional = false;

    public String answerCheck;

    public RefL<BotStep> buttonActions = new RefL();

    static public String _fieldOrder = "displayText key defaultValue placeholder buttons buttonActions allowFreeText multipleChoice optional answerCheck";

    public String toString() {
      return "Question: " + orEmptyQuotes(displayText);
    }

    public List<Pair<String, BotStep>> buttonsWithActions() {
      return zipTwoListsToPairs_longer(buttons, buttonActions);
    }

    public boolean run(Conversation conv) {
      String text = botMod().rewriteBotMessage(conv, displayText);
      Msg msg = new Msg(false, text);
      msg.out = makeMsgOut();
      conv.add(msg);
      cset(conv, "inputHandler", this);
      return false;
    }

    public Out makeMsgOut() {
      Out out = new Out();
      out.placeholder = or(placeholder, displayText);
      out.defaultInput = defaultValue;
      out.buttons = cloneList(buttons);
      out.multipleChoice = multipleChoice;
      out.multipleChoiceSeparator = multipleChoiceSeparator;
      out.radioButtons = radioButtons;
      if (eqic(answerCheck, "phone number") && botMod().phoneNumberSpecialInputField)
        out.javaScript = "$(\"#chat_message\").hide(); $(\"#chat_telephone, .iti\").show(); $(\"#chat_telephone\").val(\"\").focus();";
      else if (!allowFreeText) {
        out.javaScript = jsDisableInputField();
        if (empty(out.placeholder))
          out.placeholder = " ";
      }
      return out;
    }

    public boolean handleInput(String s, Conversation conv) {
      print("BotOutgoingQuestion handleInput " + s);
      s = trim(s);
      String theKey = or2(key, htmldecode_dropAllTags(trim(displayText)));
      if (nempty(theKey) && !eq(theKey, "-"))
        syncPut(conv.answers, theKey, s);
      conv.change();
      if (eqic(answerCheck, "email address") && !isValidEmailAddress_simple(s)) {
        handleValidationFail(conv, "bad email address");
        return true;
      }
      if (eqic(answerCheck, "phone number") && !botMod().checkPhoneNumber(s)) {
        handleValidationFail(conv, "bad phone number");
        return true;
      }
      conv.removeInputHandler(this);
      int idx = indexOfIC(trimAll(lmap(__62 -> dropStuffBeforeVerticalBar(__62), buttons)), s);
      print("Button index of " + quote(s) + " in " + sfu(buttons) + " => " + idx);
      BotStep target = get(buttonActions, idx);
      print("Button action: " + target);
      if (target != null)
        conv.callSubroutine(target);
      print("Scheduling next step in " + conv);
      conv.scheduleNextStep();
      return true;
    }

    public double preTypingDelay() {
      return empty(displayText) ? 0 : botMod().typingDelayForText(displayText);
    }

    public void handleValidationFail(Conversation conv, String purpose) {
      BotMessage msg = botMod().messageForPurpose(purpose);
      String text = or2(or2(msg == null ? null : msg.text, getOrKeep(botMod().specialPurposes, purpose)), "Invalid input, please try again");
      printVars_str("handleValidationFail", "purpose", purpose, "msg", msg, "text", text);
      Msg m = new Msg();
      m.text = text;
      m.out = makeMsgOut();
      conv.add(m);
      cset(conv, "inputHandler", this);
      return;
    }

    public boolean isUndoBoundary() {
      return true;
    }
  }

  static public class BotIdleMode extends BotStep {

    public String toString() {
      return "Idle Mode (wait indefinitely)";
    }

    public boolean run(Conversation conv) {
      return false;
    }
  }

  static public class BotEndConversation extends BotStep {

    public String toString() {
      return "End Conversation (disable user input)";
    }

    public boolean run(Conversation conv) {
      Msg msg = new Msg(false, "");
      msg.out = new Out();
      msg.out.javaScript = jsDisableInputField();
      msg.out.placeholder = " ";
      conv.add(msg);
      return true;
    }
  }

  static public String jsDisableInputField() {
    return "$(\"#chat_message\").prop('disabled', true).attr('placeholder', '');";
  }

  static public class BotSaveLead extends BotStep {

    public String toString() {
      return "Save Lead";
    }

    public boolean run(Conversation conv) {
      Lead lead = cnew(Lead.class, "conversation", conv, "domain", conv.domainObj, "date", new Timestamp(now()), "answers", cloneMap(conv.answers));
      botMod().onNewLead(lead);
      return true;
    }
  }

  static public class BotSaveFeedback extends BotStep {

    public String toString() {
      return "Save Conversation Feedback";
    }

    public boolean run(Conversation conv) {
      cnew(ConversationFeedback.class, "conversation", conv, "domain", conv.domainObj, "date", new Timestamp(now()), "answers", filterKeys(conv.answers, swic$("Conversation Feedback:")));
      return true;
    }
  }

  static public class BotClearStack extends BotStep {

    public boolean run(Conversation conv) {
      syncRemoveAllExceptLast(conv.stack);
      conv.change();
      return true;
    }

    public String toString() {
      return "Clear Stack [forget all running procedures in conversation]";
    }
  }

  static public class BotSwitchLanguage extends BotStep {

    public Ref<Language> language = new Ref();

    public boolean run(Conversation conv) {
      cset(conv, "language", language);
      return true;
    }

    public String toString() {
      return "Switch to " + language;
    }
  }

  static public class UserKeyword extends Concept {

    static final public String _fieldOrder = "language pattern examples counterexamples action enabled priority precedence parsedPattern";

    public Ref<Language> language = new Ref();

    public String pattern;

    public List<String> examples, counterexamples;

    public Ref<BotStep> action = new Ref();

    public boolean enabled = true;

    public boolean priority = false;

    public int precedence;

    transient public MMOPattern parsedPattern;

    public void change() {
      parsedPattern = null;
      botMod().consistencyCheckResults = null;
      super.change();
    }

    public MMOPattern parsedPattern() {
      if (parsedPattern == null)
        return parsedPattern = mmo2_parsePattern(pattern);
      return parsedPattern;
    }

    public String toString() {
      return "User Keyword: " + pattern;
    }

    public boolean matchWithTypos(String s) {
      return mmo2_matchWithTypos(parsedPattern(), s);
    }
  }

  static public class Language extends Concept {

    static final public String _fieldOrder = "languageName comment";

    public String languageName;

    public String comment;

    public String toString() {
      return languageName + spaceRoundBracketed(comment);
    }
  }

  static public class Evt extends Concept {
  }

  static public class EvtMatchedUserKeyword extends Evt {

    static final public String _fieldOrder = "userKeyword msg";

    public Ref<UserKeyword> userKeyword = new Ref();

    public Msg msg;

    public EvtMatchedUserKeyword() {
    }

    public EvtMatchedUserKeyword(UserKeyword userKeyword, Msg msg) {
      this.userKeyword.set(userKeyword);
      this.msg = msg;
    }
  }

  static public class EvtJumpTo extends Evt {

    public Ref<BotStep> target = new Ref();

    public EvtJumpTo() {
    }

    public EvtJumpTo(BotStep target) {
      this.target.set(target);
    }
  }

  static public class EvtCallSubroutine extends Evt {

    public Ref<BotStep> target = new Ref();

    public EvtCallSubroutine() {
    }

    public EvtCallSubroutine(BotStep target) {
      this.target.set(target);
    }
  }

  abstract static public class AbstractAvatar extends Concept {

    abstract public Avatar getActualAvatar();
  }

  static public class RandomAvatar extends AbstractAvatar {

    public Avatar getActualAvatar() {
      return random(filter(list(Avatar.class), a -> a.onShift()));
    }

    public String toString() {
      return "Choose a random avatar that is on shift";
    }
  }

  static public class Avatar extends AbstractAvatar {

    static final public String _fieldOrder = "name comment shift image";

    public String name, comment;

    public String shift;

    public Ref<AbstractBotImage> image = new Ref();

    public Avatar getActualAvatar() {
      return this;
    }

    public boolean onShift() {
      List<IntRange> shifts = parseBusinessHours_pcall(shift);
      if (empty(shifts))
        return true;
      shifts = splitBusinessHoursAtMidnight(shifts);
      int minute = minuteInDay(timeZone(botMod().timeZone));
      return anyIntRangeContains(shifts, minute);
    }

    public String toString() {
      return empty(name) ? super.toString() : "Avatar " + name + appendBracketed(comment);
    }
  }

  static public class Out extends DynamicObject {

    public List<String> buttons;

    public boolean multipleChoice, radioButtons;

    public String multipleChoiceSeparator;

    public String placeholder;

    public String defaultInput;

    public String javaScript;

    public boolean disableInput = false;
  }

  static public class Msg extends DynamicObject {

    public long time;

    public boolean fromUser = false;

    public Worker fromWorker;

    public String text;

    public Out out;

    public List<String> labels;

    public Msg() {
    }

    public Msg(boolean fromUser, String text) {
      this.text = text;
      this.fromUser = fromUser;
      time = now();
    }

    public Msg(String text, boolean fromUser) {
      this.fromUser = fromUser;
      this.text = text;
      time = now();
    }

    public String toString() {
      return (fromUser ? "User" : "Bot") + ": " + text;
    }
  }

  static public class AuthedDialogID extends Concept {

    static final public String _fieldOrder = "cookie master restrictedToDomain loggedIn";

    public String cookie;

    public boolean master = false;

    public Ref<Domain> restrictedToDomain = new Ref();

    public Worker loggedIn;

    public String domain() {
      return !restrictedToDomain.has() ? null : restrictedToDomain.get().domainAndPath;
    }

    public Ref<User> user = new Ref();

    public boolean userMode = false;

    public User user() {
      return user.get();
    }
  }

  static public class ActiveSequence {

    public Sequence originalSequence;

    public List<BotStep> steps;

    public int stepIndex;

    public ActiveSequence() {
    }

    public ActiveSequence(BotStep step) {
      if (step instanceof Sequence) {
        steps = cloneList(((Sequence) step).steps);
        originalSequence = ((Sequence) step);
      } else
        steps = ll(step);
      steps = botMod().addTypingDelays(steps);
    }

    public boolean done() {
      return stepIndex >= l(steps);
    }

    public BotStep currentStep() {
      return get(steps, stepIndex);
    }

    public void nextStep() {
      ++stepIndex;
    }

    public String toString() {
      return (stepIndex >= l(steps) ? "DONE " : "Step " + (stepIndex + 1) + "/" + l(steps) + " of ") + (originalSequence != null ? str(originalSequence) : squareBracket(joinWithComma(steps)));
    }
  }

  static public class UndoState {

    public List<ActiveSequence> stack;

    public UndoState() {
    }

    public UndoState(List<ActiveSequence> stack) {
      this.stack = stack;
    }

    public String toString() {
      return "UndoState " + stack;
    }
  }

  static public class Conversation extends Concept {

    static final public String _fieldOrder = "cookie ip country domain domainObj oldDialogs msgs lastPing botOn notificationsOn worker userTyping botTyping testMode nextActionTime userMessageProcessed newDialogTriggered dryRun avatar stack undoStates executedSteps inputHandler language answers botConfig events reloadCounter";

    public String cookie, ip, country, domain;

    public Ref<Domain> domainObj = new Ref();

    public List<List<Msg>> oldDialogs = new ArrayList();

    public List<Msg> msgs = new ArrayList();

    public long lastPing;

    public boolean botOn = true;

    public boolean notificationsOn = true;

    public Worker worker;

    transient volatile public long userTyping, botTyping;

    public boolean testMode = false;

    public long nextActionTime = Long.MAX_VALUE;

    public long userMessageProcessed;

    public int newDialogTriggered = -1;

    transient public boolean dryRun = false;

    public Ref<Avatar> avatar = new Ref();

    public List<ActiveSequence> stack = new ArrayList();

    public List<UndoState> undoStates;

    public int executedSteps;

    public IInputHandler inputHandler;

    public Ref<Language> language = new Ref();

    public Map<String, String> answers = litcimap();

    public Map<String, String> botConfig;

    public RefL<Concept> events = new RefL();

    public int reloadCounter;

    public void add(Msg m) {
      m.text = trim(m.text);
      syncAdd(msgs, m);
      botMod().noteConversationChange();
      change();
      vmBus_send("chatBot_messageAdded", mc(), this, m);
    }

    public int allCount() {
      return archiveSize() + syncL(msgs);
    }

    public int archiveSize() {
      return syncLengthLevel2(oldDialogs) + syncL(oldDialogs);
    }

    public List<Msg> allMsgs() {
      return concatLists_syncIndividual(syncListPlus(oldDialogs, msgs));
    }

    public long lastMsgTime() {
      Msg m = last(msgs);
      return m == null ? 0 : m.time;
    }

    public void incReloadCounter() {
      cset(this, "reloadCounter", reloadCounter + 1);
    }

    public void turnBotOff() {
      cset(this, "botOn", false);
      botMod().noteConversationChange();
    }

    public void turnBotOn() {
      cset(this, "botOn", true, "worker", null);
      String backMsg = botMod().getCannedAnswer("#botBack", this);
      if (empty(msgs) || lastMessageIsFromUser() || !eq(last(msgs).text, backMsg))
        add(new Msg(backMsg, false));
      botMod().noteConversationChange();
    }

    public boolean lastMessageIsFromUser() {
      return nempty(msgs) && last(msgs).fromUser;
    }

    public void newDialog() {
      if (syncNempty(msgs))
        syncAdd(oldDialogs, msgs);
      cset(this, "msgs", new ArrayList());
      syncClear(answers);
      syncClear(stack);
      syncClear(undoStates);
      dropScheduledActions();
      change();
      print("newDialog " + archiveSize() + "/" + allCount());
      vmBus_send("chatBot_clearedSession", mc(), this);
    }

    public void dropScheduledActions() {
      deleteConcepts(ScheduledActionOnConversation.class, "conv", this);
    }

    public void jumpTo(BotStep step) {
      syncPopLast(stack);
      print("Jumping to " + step);
      noteEvent(new EvtJumpTo(step));
      if (step == null)
        return;
      syncAdd(stack, new ActiveSequence(step));
      change();
    }

    public void callSubroutine(BotStep step) {
      if (step == null)
        return;
      noteEvent(new EvtCallSubroutine(step));
      print("Calling subroutine " + step);
      syncAdd(stack, new ActiveSequence(step));
      change();
    }

    public void removeInputHandler(IInputHandler h) {
      if (inputHandler == h)
        cset(this, "inputHandler", null);
    }

    public void scheduleNextStep() {
      botMod().addScheduledAction(new Action_NextStep(this));
    }

    public void noteEvent(Concept event) {
      events.add(event);
    }

    public boolean isActive() {
      return lastPing + botMod().activeConversationTimeout() >= now();
    }

    public String botImg() {
      if (avatar.has())
        return avatar.get().image.get().imageURL();
      else
        return botMod().botImageForDomain(domainObj.get());
    }

    public void addUndoState() {
      UndoState state = new UndoState(syncShallowCloneElements(stack));
      print("Made undo state: " + state);
      undoStates = syncAddOrCreate(undoStates, state);
      change();
    }

    public Ref<UserPost> mirrorPost = new Ref();

    public Ref<UserPost> detailedMirrorPost = new Ref();

    public void change() {
      super.change();
      ((DynGazelleRocks) botMod()).rstUpdateMirrorPosts.add(this);
    }

    public void updateMirrorPost() {
      if (isDeleted())
        return;
      if (!mirrorPost.has() && syncNempty(msgs))
        cset(Conversation.this, "mirrorPost", cnew(UserPost.class, "title", "Conversation " + id, "type", "Conversation Mirror", "creator", ((DynGazelleRocks) botMod()).internalUser(), "botInfo", "Conversation Mirror Bot"));
      cset(mirrorPost.get(), "text", lines_rtrim(msgs));
      if (!detailedMirrorPost.has() && syncNempty(msgs))
        cset(Conversation.this, "detailedMirrorPost", cnew(UserPost.class, "title", "Conversation " + id + " with details", "type", "Detailed Conversation Mirror", "creator", ((DynGazelleRocks) botMod()).internalUser(), "botInfo", "Conversation Mirror Bot"));
      cset(detailedMirrorPost.get(), "text", indentedStructure(msgs));
    }

    public void delete() {
      cdelete(mirrorPost.get());
      super.delete();
    }
  }

  abstract static public class ScheduledAction extends Concept implements Runnable {

    public long time;
  }

  abstract static public class ScheduledActionOnConversation extends ScheduledAction {

    public Ref<Conversation> conv = new Ref();
  }

  static public class Action_NextStep extends ScheduledActionOnConversation {

    public int executedSteps = -1;

    public Action_NextStep() {
    }

    public Action_NextStep(Conversation conv) {
      this.conv.set(conv);
    }

    public Action_NextStep(Conversation conv, int executedSteps) {
      this.conv.set(conv);
      this.executedSteps = executedSteps;
    }

    public void run() {
      nextStep(conv.get(), executedSteps);
    }
  }

  static public class OnNewDialog extends ScheduledActionOnConversation {

    public OnNewDialog() {
    }

    public OnNewDialog(Conversation conv) {
      this.conv.set(conv);
    }

    public void run() {
      botMod().startMainScript(conv.get());
    }
  }

  static public void nextStep(Conversation conv) {
    nextStep(conv, -1);
  }

  static public void nextStep(Conversation conv, int expectedExecutedSteps) {
    if (expectedExecutedSteps >= 0 && conv.executedSteps != expectedExecutedSteps)
      return;
    while (licensed()) {
      if (empty(conv.stack))
        return;
      ActiveSequence seq = syncLast(conv.stack);
      boolean done = seq.done();
      printVars_str("Active sequence", "conv", conv, "seq", seq, "done", done, "stackSize", syncL(conv.stack));
      if (done) {
        syncPopLast(conv.stack);
        continue;
      }
      BotStep step = seq.currentStep();
      if (botMod().enableUndoStates && step.isUndoBoundary())
        conv.addUndoState();
      seq.nextStep();
      ++conv.executedSteps;
      conv.change();
      if (!executeStep(step, conv)) {
        print("Step returned false: " + step);
        break;
      }
    }
  }

  static public boolean executeStep(BotStep step, Conversation conv) {
    if (step == null || conv == null)
      return false;
    print("Executing step " + step + " in " + conv);
    ExecutedStep executed = null;
    if (botMod().recordExecutionsAndInputs)
      executed = cnew(ExecutedStep.class, "step", step, "conversation", conv);
    Msg lastMsg = syncLast(conv.msgs);
    boolean result = step.run(conv);
    Msg newMsg = syncLast(conv.msgs);
    if (newMsg != null && !newMsg.fromUser && newMsg != lastMsg)
      cset(executed, "msg", newMsg);
    return result;
  }

  static public class OnUserMessage extends ScheduledActionOnConversation {

    public OnUserMessage() {
    }

    public OnUserMessage(Conversation conv) {
      this.conv.set(conv);
    }

    public void run() {
      Conversation conv = this.conv.get();
      Msg msg = syncLast(conv.msgs);
      if (msg == null || !msg.fromUser)
        return;
      print("OnUserMessage: " + msg);
      if (eqic(msg.text, "!back")) {
        botMod().doUndo(conv);
        return;
      }
      if (botMod().handleGeneralUserInput(conv, msg, true))
        return;
      IInputHandler inputHandler = conv.inputHandler;
      if (inputHandler != null) {
        InputHandled rec = null;
        String input = msg.text;
        if (botMod().recordExecutionsAndInputs)
          rec = cnew(InputHandled.class, "inputHandler", inputHandler, "conversation", conv, "msg", msg, "input", input);
        boolean result = conv.inputHandler.handleInput(input, conv);
        cset(rec, "handled", result);
        if (result)
          return;
      }
      botMod().handleGeneralUserInput(conv, msg, false);
    }
  }

  static public class Domain extends Concept {

    public String domainAndPath;

    public String tenantID;

    public Ref<AbstractBotImage> botImage = new Ref();

    public String botName;

    public Ref<AbstractAvatar> avatar = new Ref();

    public String headerColorLeft, headerColorRight;

    public Boolean autoOpenBot;

    public Ref<BotStep> mainScript = new Ref();

    public String password = aGlobalID();

    static public String _fieldOrder = "domainAndPath botImage mainScript";

    public String toString() {
      return domainAndPath;
    }
  }

  static public class Form extends Concept {

    public String name;

    public RefL<BotStep> steps = new RefL();

    public String toString() {
      return name;
    }
  }

  static public class DeliveredDomain extends Concept {

    public String domain;
  }

  static public class CannedAnswer extends Concept {

    public String hashTag, text;
  }

  static public String text(CannedAnswer a) {
    return a == null ? null : a.text;
  }

  static public class Lead extends Concept {

    static final public String _fieldOrder = "domain conversation date answers";

    public Ref<Domain> domain = new Ref();

    public Ref<Conversation> conversation = new Ref();

    public Timestamp date;

    public Map<String, String> answers;
  }

  static public class ConversationFeedback extends Concept {

    static final public String _fieldOrder = "domain conversation date answers";

    public Ref<Domain> domain = new Ref();

    public Ref<Conversation> conversation = new Ref();

    public Timestamp date;

    public Map<String, String> answers;
  }

  static public class Settings extends Concept {

    static final public String _fieldOrder = "mainDomainName botTypingDelay botTypingDelayPerWord botTypingMaxDelay preferredCountryCodes multiLanguageMode notificationSound talkToBotOnlyWithAuth enableWorkerChat defaultLanguage mailLeadsTo leadMailSubject";

    public String mainDomainName;

    public double botTypingDelay;

    public double botTypingDelayPerWord;

    public double botTypingMaxDelay;

    public String preferredCountryCodes;

    public boolean multiLanguageMode = false;

    public Ref<UploadedSound> notificationSound = new Ref();

    public boolean talkToBotOnlyWithAuth = false;

    public boolean enableWorkerChat = false;

    public Ref<Language> defaultLanguage = new Ref();

    public String mailLeadsTo;

    public String leadMailSubject = "A new lead occurred in your chat bot";
  }

  static public interface IInputHandler {

    public boolean handleInput(String s, Conversation conv);
  }

  static public DynNewBot2 botMod() {
    return (DynNewBot2) db_mainConcepts().miscMapGet(DynNewBot2.class);
  }

  static public class And<A> implements IFieldsToList, Transformable, Visitable {

    public A a;

    public A b;

    public And() {
    }

    public And(A a, A b) {
      this.b = b;
      this.a = a;
    }

    public String toString() {
      return shortClassName(this) + "(" + a + ", " + b + ")";
    }

    public boolean equals(Object o) {
      if (!(o instanceof And))
        return false;
      And __0 = (And) o;
      return eq(a, __0.a) && eq(b, __0.b);
    }

    public int hashCode() {
      int h = 65975;
      h = boostHashCombine(h, _hashCode(a));
      h = boostHashCombine(h, _hashCode(b));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { a, b };
    }

    public Object transformUsing(IF1 f) {
      return new And((A) f.get(a), (A) f.get(b));
    }

    public void visitUsing(IVF1 f) {
      f.get(a);
      f.get(b);
    }
  }

  static public class ReliableSingleThread implements Runnable {

    public boolean _isTransient() {
      return true;
    }

    public Object runnable;

    public String name = "Single Thread";

    public boolean cancelBeforeTrigger = false;

    public F0<AutoCloseable> enter;

    public int cancelTimeOut = 10000;

    public boolean trigger = false;

    public Thread thread;

    public WeakReference<Thread> threadBeingCancelled;

    public ReliableSingleThread(Object runnable) {
      this.runnable = runnable;
    }

    public void trigger() {
      go();
    }

    synchronized public void go() {
      if (cancelBeforeTrigger)
        cancel();
      trigger = true;
      if (!running()) {
        AutoCloseable __1 = callF(enter);
        try {
          thread = startThread(name, new Runnable() {

            public void run() {
              try {
                AutoCloseable __2 = callF(enter);
                try {
                  _run();
                } finally {
                  _close(__2);
                }
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "temp callF(enter);\r\n        _run();";
            }
          });
        } finally {
          _close(__1);
        }
      }
    }

    public void run() {
      go();
    }

    public void get() {
      go();
    }

    synchronized public boolean running() {
      return thread != null;
    }

    public void triggerAndWait() {
      trigger();
      waitUntilDone();
    }

    public void waitUntilDone() {
      while (running()) sleep(1);
    }

    public void _run() {
      try {
        while (licensed()) {
          Thread oldThread;
          synchronized (this) {
            if (!trigger) {
              thread = null;
              break;
            }
            oldThread = getWeakRef(threadBeingCancelled);
            trigger = false;
          }
          if (oldThread != null && oldThread != currentThread())
            oldThread.join(cancelTimeOut);
          pcallF(runnable);
        }
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    synchronized public void cancel() {
      if (thread == null)
        return;
      threadBeingCancelled = new WeakReference(thread);
      cancelAndInterruptThread(thread);
      thread = null;
    }

    public void cancelAndTrigger() {
      cancel();
      trigger();
    }

    synchronized public boolean triggered() {
      return trigger;
    }

    public void cleanMeUp() {
      cancel();
    }

    public ReliableSingleThread cancelBeforeTrigger() {
      cancelBeforeTrigger = true;
      return this;
    }
  }

  static public class HasIndex implements Comparable<HasIndex> {

    public int idx;

    public HasIndex() {
    }

    public HasIndex(int idx) {
      this.idx = idx;
    }

    public int compareTo(HasIndex h) {
      return idx - h.idx;
    }
  }

  static public class Cache<A> {

    public Object maker;

    public A value;

    public long loaded;

    static public boolean debug = false;

    public long changeCount;

    public Lock lock = lock();

    public Cache() {
    }

    public Cache(Object maker) {
      this.maker = maker;
    }

    public Cache(IF0<A> maker) {
      this.maker = maker;
    }

    public A get() {
      if (hasLock(lock))
        return value;
      Lock __0 = lock;
      lock(__0);
      try {
        if (loaded == 0) {
          value = make();
          changeCount++;
          loaded = sysNow();
        }
        return value;
      } finally {
        unlock(__0);
      }
    }

    public void clear() {
      Lock __1 = lock;
      lock(__1);
      try {
        if (debug && loaded != 0)
          print("Clearing cache");
        value = null;
        changeCount++;
        loaded = 0;
      } finally {
        unlock(__1);
      }
    }

    public void clear(double seconds) {
      Lock __2 = lock;
      lock(__2);
      try {
        if (seconds != 0 && loaded != 0 && sysNow() >= loaded + seconds * 1000)
          clear();
      } finally {
        unlock(__2);
      }
    }

    public void set(A a) {
      Lock __3 = lock;
      lock(__3);
      try {
        value = a;
        ++changeCount;
        loaded = sysNow();
      } finally {
        unlock(__3);
      }
    }

    public A make() {
      return (A) callF(maker);
    }
  }

  static public class CountryDialCode implements IFieldsToList {

    public String country;

    public String countryCode;

    public String dialCode;

    public CountryDialCode() {
    }

    public CountryDialCode(String country, String countryCode, String dialCode) {
      this.dialCode = dialCode;
      this.countryCode = countryCode;
      this.country = country;
    }

    public String toString() {
      return shortClassName(this) + "(" + country + ", " + countryCode + ", " + dialCode + ")";
    }

    public boolean equals(Object o) {
      if (!(o instanceof CountryDialCode))
        return false;
      CountryDialCode __1 = (CountryDialCode) o;
      return eq(country, __1.country) && eq(countryCode, __1.countryCode) && eq(dialCode, __1.dialCode);
    }

    public int hashCode() {
      int h = 240284435;
      h = boostHashCombine(h, _hashCode(country));
      h = boostHashCombine(h, _hashCode(countryCode));
      h = boostHashCombine(h, _hashCode(dialCode));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { country, countryCode, dialCode };
    }
  }

  static public interface IWebRequest {

    public String uri();

    public Map<String, String> params();

    public Map<String, String> headers();

    public Map<String, String> files();

    default public String clientIP() {
      return unnull(getClientIPFromHeaders(headers()));
    }

    default public String domain() {
      return mapGet(headers(), "host");
    }

    public String cookie();

    public boolean isHttps();

    default public void noSpam() {
    }

    default public String get(String param) {
      return mapGet(params(), param);
    }
  }

  static public class StringTree2<A> {

    public A leafValue;

    public HashMap<String, StringTree2<A>> children = new HashMap();

    public A get() {
      return leafValue;
    }

    public StringTree2<A> get(String s) {
      return children.get(s);
    }

    public StringTree2<A> getOrAdd(String s) {
      StringTree2<A> t = children.get(s);
      if (t == null)
        children.put(s, t = new StringTree2());
      return t;
    }
  }

  static public interface Visitable {

    public void visitUsing(IVF1 f);
  }

  static public class IntRange {

    public int start, end;

    public IntRange() {
    }

    public IntRange(int start, int end) {
      this.end = end;
      this.start = start;
    }

    public IntRange(IntRange r) {
      start = r.start;
      end = r.end;
    }

    public boolean equals(Object o) {
      return stdEq2(this, o);
    }

    public int hashCode() {
      return stdHash2(this);
    }

    final public int length() {
      return end - start;
    }

    final public boolean empty() {
      return start >= end;
    }

    final public boolean isEmpty() {
      return start >= end;
    }

    static public String _fieldOrder = "start end";

    public String toString() {
      return "[" + start + ";" + end + "]";
    }
  }

  static public interface Transformable {

    public Object transformUsing(IF1 f);
  }

  static public class Scorer<A> {

    public double score, total;

    public List<A> successes, errors;

    public boolean verboseFailures, verboseAll;

    public void addZeroToOne(double score) {
      ++total;
      this.score += clamp(score, 0, 1);
    }

    public void addZeroToOneError(double error) {
      addZeroToOne(1 - error);
    }

    public void addError() {
      add(false);
    }

    public void addError(A info) {
      add(false, info);
    }

    public void error(A info) {
      addError(info);
    }

    public void addOK() {
      add(true);
    }

    public void addOK(A info) {
      add(true, info);
    }

    public void ok() {
      addOK();
    }

    public void ok(A info) {
      addOK(info);
    }

    public boolean add(boolean correct) {
      ++total;
      if (correct)
        ++score;
      return correct;
    }

    public boolean add(boolean correct, A info) {
      main.add(correct ? successes : errors, info);
      if (verboseAll || verboseFailures && !correct)
        _print((correct ? "[GOOD] " : "[BAD] ") + info);
      return add(correct);
    }

    public void eq(Object a, Object b) {
      if (_eq(a, b))
        add(true);
      else
        add(false, (A) (a + " != " + b));
    }

    public void print() {
      main.print(toString());
    }

    public String toString() {
      return formatDouble(ratioToPercent(score, total), 1) + "% correct (n=" + formatDouble(total, 1) + ")";
    }

    public double get() {
      return ratioToPercent(score, total);
    }

    public double percentScore() {
      return get();
    }

    public double score() {
      return get();
    }

    public boolean allCorrect() {
      return score == total;
    }

    public void add(Scorer scorer) {
      if (scorer == null)
        return;
      total += scorer.total;
      score += scorer.score;
      addAll(successes, scorer.successes);
      addAll(errors, scorer.errors);
    }

    public void collectErrors() {
      errors = new ArrayList();
    }
  }

  static public class Timestamp implements IFieldsToList {

    public long date;

    public Timestamp() {
    }

    public Timestamp(long date) {
      this.date = date;
    }

    public boolean equals(Object o) {
      if (!(o instanceof Timestamp))
        return false;
      Timestamp __1 = (Timestamp) o;
      return date == __1.date;
    }

    public int hashCode() {
      int h = 2059094262;
      h = boostHashCombine(h, _hashCode(date));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { date };
    }

    public String toString() {
      return formatLocalDateWithSeconds(date);
    }
  }

  abstract static public class DynPrintLogAndEnabled extends DynPrintLog {

    public JComponent visualize() {
      return dm_visualizeWithEnabled(super.visualize());
    }

    volatile public boolean enabled = true;

    transient public JPanel buttons;

    public JComponent visualizeWithoutEnabled() {
      return super.visualize();
    }

    public JComponent dm_visualizeWithEnabled(JComponent main) {
      return centerAndSouthWithMargins(main, makeControlArea());
    }

    public JPanel makeControlArea() {
      return buttons = jrightalignedline(makeEnabledCheckBox());
    }

    static public JCheckBox makeEnabledCheckBox() {
      return dm_fieldCheckBox("enabled");
    }

    public void setEnabled(boolean b) {
      setField("enabled", b);
    }

    public void addToControlArea(Component... components) {
      addComponentsFirst(buttons, components);
    }
  }

  static public class ScoredSearcher<A> {

    public int maxResults = 1000;

    public List<String> preparedTerms;

    public Map<A, Double> scores = new HashMap();

    public ScoredSearcher() {
    }

    public ScoredSearcher(String query, Object... __) {
      maxResults = optPar("maxResults", __, maxResults);
      setQuery(query);
    }

    public void setQuery(String query) {
      preparedTerms = scoredSearch_prepare(query);
    }

    public void put(A object, String s) {
      putUnlessZero(scores, object, scoredSearch_score(s, preparedTerms));
    }

    public void put(A object, Collection<String> fields) {
      add(object, scoreFields(fields));
    }

    public int scoreFields(Collection<String> fields) {
      return scoredSearch_score(fields, preparedTerms);
    }

    public int score(String text) {
      return scoredSearch_score(text, preparedTerms);
    }

    public void add(A object) {
      put(object, str(object));
    }

    public void add(A object, Collection<String> fields) {
      put(object, fields);
    }

    public void add(A object, double score) {
      putUnlessZero(scores, object, score);
    }

    public List<A> get() {
      return takeFirst(maxResults, keysSortedByValuesDesc(scores));
    }

    public A best() {
      return keyWithHighestValue(scores);
    }
  }

  static public <A, B> B pairB(Pair<A, B> p) {
    return p == null ? null : p.b;
  }

  static public String nConcepts(long n) {
    return n2(n, "concept");
  }

  static public String nConcepts(Collection l) {
    return nConcepts(l(l));
  }

  static public Object firstElementNotSubclassing(Iterable l, Class c) {
    return firstThat(l, o -> !isInstanceOf(o, c));
  }

  static public <A> boolean allUnique(List<A> l) {
    return l(uniquify(l)) == l(l);
  }

  static public <A> List<A> nonNulls(List<A> l) {
    return withoutNulls(l);
  }

  static public <A> List<A> nonNulls(A[] l) {
    return withoutNulls(l);
  }

  static public <A, B> Map<A, B> nonNulls(Map<A, B> map) {
    return withoutNulls(map);
  }

  static public Collection<Concept.Ref> scanConceptForRefs(Concept c) {
    Set<Concept.Ref> refs = new HashSet();
    if (c != null)
      for (Object o : values(objectToMap(c))) {
        if (o instanceof Concept.Ref)
          refs.add(((Concept.Ref) o));
        else if (o instanceof Concept.RefL)
          addAll(refs, ((Concept.RefL) o).l);
      }
    return refs;
  }

  static public <A> List<A> listMinusSet(Iterable<A> l, Collection<? extends A> stuff) {
    if (l == null)
      return null;
    if (empty(stuff))
      return asList(l);
    Set<? extends A> set = asSet(stuff);
    List<A> l2 = new ArrayList();
    for (A a : l) if (!set.contains(a))
      l2.add(a);
    return l2;
  }

  static public <A> List<A> listMinusSet(Iterable<A> l, Collection<A> stuff, Collection<? extends A> stuff2) {
    return listMinusSet(listMinusSet(l, stuff), stuff2);
  }

  static public <A> List<A> cloneAndClear(List<A> l) {
    return cloneAndClearList(l);
  }

  static public <A, B> MultiSetMap<A, B> treeMultiSetMap() {
    return new MultiSetMap(true);
  }

  static public <A, B> MultiSetMap<A, B> treeMultiSetMap(Comparator<A> comparator) {
    return new MultiSetMap(new TreeMap<A, Set<B>>(comparator));
  }

  static public Comparator reverseOrder() {
    return new Comparator() {

      public int compare(Object a, Object b) {
        return cmp(b, a);
      }
    };
  }

  static public <A, B> List<B> getAll(Map<A, B> map, Collection<A> l) {
    return lookupAllOpt(map, l);
  }

  static public <A, B> List<B> getAll(Collection<A> l, Map<A, B> map) {
    return lookupAllOpt(map, l);
  }

  static public <A, B> List<A> cloneKeys_noSync(Map<A, B> map) {
    return cloneList_noSync(keys(map));
  }

  static public <A, B> IterableIterator<B> navigableMultiSetMapValuesIterator_concurrent(final MultiSetMap<A, B> mm) {
    return navigableMultiSetMapValuesIterator_concurrent(mm, mm.data);
  }

  static public <A, B> IterableIterator<B> navigableMultiSetMapValuesIterator_concurrent(final MultiSetMap<A, B> mm, Object mutex) {
    return iteratorFromFunction(new F0<B>() {

      public Iterator<Set<B>> it = concurrentlyIterateValues((NavigableMap) mm.data, mutex);

      public Iterator<B> it2;

      public B get() {
        while (it2 == null || !it2.hasNext()) {
          if (!it.hasNext())
            return null;
          it2 = iterator(asList(it.next()));
        }
        return it2.next();
      }
    });
  }

  static public <A, B> MultiSet<A> multiSetMapToMultiSet(MultiSetMap<A, B> mm) {
    MultiSet<A> ms = new MultiSet();
    for (A a : keys(mm)) ms.add(a, l(mm.get(a)));
    return ms;
  }

  static public Collection<Concept> allConcepts() {
    return db_mainConcepts().allConcepts();
  }

  static public Collection<Concept> allConcepts(Concepts concepts) {
    return concepts.allConcepts();
  }

  static public String defaultTimerName_name;

  static public String defaultTimerName() {
    if (defaultTimerName_name == null)
      defaultTimerName_name = "A timer by " + programID();
    return defaultTimerName_name;
  }

  static public Set<java.util.Timer> _registerTimer_list = newWeakHashSet();

  static public void _registerTimer(java.util.Timer timer) {
    _registerTimer_list.add(timer);
  }

  static public void cleanMeUp__registerTimer() {
    cancelTimers(getAndClearList(_registerTimer_list));
  }

  static public UnsupportedOperationException unsupportedOperation() {
    throw new UnsupportedOperationException();
  }

  static public long sysTime() {
    return sysNow();
  }

  static public void change() {
    callOpt(getOptMC("mainConcepts"), "allChanged");
  }

  static public <A, B> void put(Map<A, B> map, A a, B b) {
    if (map != null)
      map.put(a, b);
  }

  static public <A> void put(List<A> l, int i, A a) {
    if (l != null && i >= 0 && i < l(l))
      l.set(i, a);
  }

  static public <A, B> Set<Map.Entry<A, B>> entrySet(Map<A, B> map) {
    return _entrySet(map);
  }

  static public <A, B> Set<A> keySet(Map<A, B> map) {
    return map == null ? new HashSet() : map.keySet();
  }

  static public Set keySet(Object map) {
    return keys((Map) map);
  }

  static public <A> Set<A> keySet(MultiSet<A> ms) {
    return ms.keySet();
  }

  static public <A, B> Set<A> keySet(MultiMap<A, B> mm) {
    return mm.keySet();
  }

  static public <A> MultiSetMap<String, A> ciMultiSetMap() {
    MultiSetMap<String, A> mm = new MultiSetMap();
    mm.data = ciMap();
    return mm;
  }

  static public <A, B> IterableIterator<B> navigableMultiSetMapValuesIterator(final MultiSetMap<A, B> mm) {
    return iteratorFromFunction(new F0<B>() {

      public Iterator<Set<B>> it = concurrentlyIterateValues((NavigableMap) mm.data);

      public Iterator<B> it2;

      public B get() {
        while (it2 == null || !it2.hasNext()) {
          if (!it.hasNext())
            return null;
          it2 = iterator(asList(it.next()));
        }
        return it2.next();
      }
    });
  }

  static public boolean isAbstract(Class c) {
    return (c.getModifiers() & Modifier.ABSTRACT) != 0;
  }

  static public boolean isAbstract(Method m) {
    return (m.getModifiers() & Modifier.ABSTRACT) != 0;
  }

  static public boolean reflection_isForbiddenMethod(Method m) {
    return m.getDeclaringClass() == Object.class && eqOneOf(m.getName(), "finalize", "clone", "registerNatives");
  }

  static public <A, B> void multiMapPut(Map<A, List<B>> map, A a, B b) {
    List<B> l = map.get(a);
    if (l == null)
      map.put(a, l = new ArrayList());
    l.add(b);
  }

  static public <A, B> void multiMapPut(MultiMap<A, B> mm, A key, B value) {
    if (mm != null && key != null && value != null)
      mm.put(key, value);
  }

  static public Set<Class> allInterfacesImplementedBy(Class c) {
    if (c == null)
      return null;
    HashSet<Class> set = new HashSet();
    allInterfacesImplementedBy_find(c, set);
    return set;
  }

  static public void allInterfacesImplementedBy_find(Class c, Set<Class> set) {
    if (c.isInterface() && !set.add(c))
      return;
    do {
      for (Class intf : c.getInterfaces()) allInterfacesImplementedBy_find(intf, set);
    } while ((c = c.getSuperclass()) != null);
  }

  static public boolean call_checkArgs(Method m, Object[] args, boolean debug) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length) {
      if (debug)
        print("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++) {
      Object arg = args[i];
      if (!(arg == null ? !types[i].isPrimitive() : isInstanceX(types[i], arg))) {
        if (debug)
          print("Bad parameter " + i + ": " + arg + " vs " + types[i]);
        return false;
      }
    }
    return true;
  }

  static public Method findStaticMethod(Class c, String method, Object... args) {
    Class _c = c;
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (!m.getName().equals(method))
          continue;
        if ((m.getModifiers() & Modifier.STATIC) == 0 || !findStaticMethod_checkArgs(m, args))
          continue;
        return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  static public boolean findStaticMethod_checkArgs(Method m, Object[] args) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length)
      return false;
    for (int i = 0; i < types.length; i++) if (!(args[i] == null || isInstanceX(types[i], args[i])))
      return false;
    return true;
  }

  static public File programSecretFile(String progID, String fileName) {
    return secretProgramFile(progID, fileName);
  }

  static public File programSecretFile(String fileName) {
    return secretProgramFile(fileName);
  }

  static public String loadTextFileOrCreateWithRandomID(File f) {
    String id = trim(loadTextFile(f));
    if (empty(id))
      saveTextFile(f, id = aGlobalID());
    return id;
  }

  static public SecretValue<String> aSecretGlobalID() {
    return secretValueOrNull(aGlobalID());
  }

  static public <A> boolean syncNempty(Collection<A> l) {
    return !syncEmpty(l);
  }

  static public String lines_rtrim(Collection lines) {
    return rtrim_fromLines(lines);
  }

  static public String indentedStructure(Object o) {
    return indentStructureString(struct(o));
  }

  static public String escapeNewLines(String s) {
    return s == null ? null : fixNewLines(s).replace("\n", " | ");
  }

  static public <A, B> List<Pair<A, B>> zipTwoListsToPairs_lengthOfFirst(List<A> l1, List<B> l2) {
    int n = l(l1);
    List<Pair<A, B>> out = emptyList(n);
    for (int i = 0; i < n; i++) addPair(out, l1.get(i), get(l2, i));
    return out;
  }

  static public <A, B> List<A> pairsAWhereB(Iterable<Pair<A, B>> c, IF1<B, Boolean> pred) {
    return pairsA(filter(c, p -> pred.get(p.b)));
  }

  static public boolean eqic_unnull(String a, String b) {
    return eqic(unnull(a), unnull(b));
  }

  static public <A> List<A> syncInstancesOf(Iterable i, Class<A> c) {
    if (i == null)
      return new ArrayList();
    synchronized (i) {
      return collectInstances(i, c);
    }
  }

  static public <A> List<A> syncInstancesOf(Class<A> c, Iterable i) {
    return syncInstancesOf(i, c);
  }

  static public boolean eqicOrSwicPlusSpace(String a, String b) {
    return swic(a, b) && (l(a) == l(b) || a.charAt(l(b)) == ' ');
  }

  static public String dm_require(String moduleLibID) {
    return dm_makeModule(moduleLibID);
  }

  static public <A> AutoCloseable dm_vmBus_onMessage(final String msg, final VF1<A> onMessage) {
    return dm_ownResource(vmBus_onMessage(msg, onMessage));
  }

  static public <A> AutoCloseable dm_vmBus_onMessage(final String msg, final IVF1<A> onMessage) {
    return dm_ownResource(vmBus_onMessage(msg, ivf1ToVF1(onMessage)));
  }

  static public <A, B> AutoCloseable dm_vmBus_onMessage(final String msg, final IVF2<A, B> onMessage) {
    return dm_ownResource(vmBus_onMessage(msg, ivf2ToVF2(onMessage)));
  }

  static public <A, B> AutoCloseable dm_vmBus_onMessage(String msg, final VF2<A, B> onMessage) {
    return dm_ownResource(vmBus_onMessage(msg, onMessage));
  }

  static public AutoCloseable dm_vmBus_onMessage(String msg, Runnable onMessage) {
    return dm_ownResource(vmBus_onMessage(msg, onMessage));
  }

  static public double systemLoad() {
    double load = osMXBean().getSystemLoadAverage();
    if (load < 0)
      return systemCPULoad();
    return load;
  }

  static public void printConceptIndices() {
    printConceptIndices(db_mainConcepts());
  }

  static public void printConceptIndices(Concepts cc) {
    if (cc == null)
      return;
    Set<Class<? extends Concept>> classes = joinSets(keys(cc.fieldIndices), keys(cc.ciFieldIndices));
    print(n2(classes, "indexed class", "indexed classes") + ".");
    for (Class<? extends Concept> c : classes) {
      print("Indices on " + c + ":");
      for (Map.Entry<? extends String, ? extends IFieldIndex> __1 : _entrySet(cc.fieldIndices.get(c))) {
        String field = __1.getKey();
        IFieldIndex idx = __1.getValue();
        print("  " + field + ": " + idx);
      }
      for (Map.Entry<? extends String, ? extends IFieldIndex> __0 : _entrySet(cc.ciFieldIndices.get(c))) {
        String field = __0.getKey();
        IFieldIndex idx = __0.getValue();
        print("  " + field + " [case-insensitive]: " + idx);
      }
    }
  }

  static public void onConceptsChange(Runnable r) {
    onConceptsChange(db_mainConcepts(), r);
  }

  static public void onConceptsChange(Concepts cc, Runnable r) {
    cc.addConceptIndex(simpleConceptIndex(r));
    cc.onAllChanged.add(r);
  }

  static public <A, B> Map<A, B> syncWeakHashMap() {
    return newWeakHashMap();
  }

  static public <A extends AutoCloseable, B> void closeAllKeysAndClear(Map<A, B> map) {
    closeAllAndClear(keys(map));
  }

  static public Object rcall(String method, Object o, Object... args) {
    return call_withVarargs(o, method, args);
  }

  static public void setFieldToIVF1Proxy(Object o, String field, IVF1 target) {
    if (o == null || target == null)
      return;
    Class type = fieldType(o, field);
    if (type == null)
      throw fail("Field " + field + " not found in " + className(o));
    set(o, field, singleObjectMethodProxy(type, target, "get"));
  }

  static public String rcall_string(String method, Object o, Object... args) {
    return (String) rcall(method, o, args);
  }

  static public <A> boolean syncAdd(Collection<A> c, A b) {
    if (c == null)
      return false;
    synchronized (collectionMutex(c)) {
      return c.add(b);
    }
  }

  static public <A> void syncAdd(List<A> l, int idx, A b) {
    if (l != null)
      synchronized (collectionMutex(l)) {
        l.add(idx, b);
      }
  }

  static public String dropParamFromURL(String url, String key) {
    Map<String, String> params = paramsFromURL(url);
    if (!containsKey(params, key))
      return url;
    params.remove(key);
    return addAnchorToURL(appendParamsToURL(urlWithoutQueryAndAnchor(url), params), anchorFromURL(url));
  }

  static public Lock dbLock() {
    return db_mainConcepts().lock;
  }

  static public Lock dbLock(Concepts cc) {
    return cc == null ? null : cc.lock;
  }

  static public Lock dbLock(Concept c) {
    return dbLock(c == null ? null : c._concepts);
  }

  static public boolean hasConceptIC(Class<? extends Concept> c, Object... params) {
    return hasConceptWhereIC(c, params);
  }

  static public boolean hasConceptIC(Concepts cc, Class<? extends Concept> c, Object... params) {
    return hasConceptWhereIC(cc, c, params);
  }

  static public boolean regexpContainsIC(String pat, String s) {
    return regexpFindsIC(pat, s);
  }

  static public String hresponstable() {
    return hcss_responstable();
  }

  static public String hfullcenter(Object contents, Object... __) {
    return tag("table", tr(td(contents, "align", "center")), paramsPlus(__, "width", "100%", "height", "100%"));
  }

  static public String h3_htmlEncode(Object contents, Object... params) {
    return h3(htmlEncode2(str(contents)), params);
  }

  static public String td(Object contents, Object... params) {
    return hfulltag("td", contents, params);
  }

  static public String td() {
    return td("");
  }

  static public String td_valignTop(Object contents, Object... params) {
    return tdTop(contents, params);
  }

  static public String hpassword(String name, Object... params) {
    return hpasswordfield(name, params);
  }

  static public String hpassword(String name) {
    return hpasswordfield(name);
  }

  static public Object serve404() {
    return subBot_serve404();
  }

  static public Object serve404(String msg) {
    return subBot_serve404(msg);
  }

  static public Object serveWithContentType(String text, String contentType) {
    return serveByteArray(toUtf8(text), contentType);
  }

  static public Object addHeader(String header, String value, Object response) {
    call(response, "addHeader", header, value);
    return response;
  }

  static public Object serveJSON(Object... data) {
    return serveJSON_shallowLineBreaks(jsonPrepareData(data));
  }

  static public long conceptID(Concept c) {
    return c == null ? 0 : c.id;
  }

  static public String dropSlashPrefix(String s) {
    return dropLeadingSlash(s);
  }

  static public String renderConceptDate(Concept cc) {
    if (cc == null)
      return "";
    String c = formatLocalDateWithSeconds(cc.created);
    String m = formatLocalDateWithSeconds(cc._modified);
    String s = "Created " + c;
    if (neq(c, m))
      s += ", modified " + m;
    return s;
  }

  static public String p_vbar(String... items) {
    return p_vbar(asList(items));
  }

  static public String p_vbar(Collection<String> items, Object... __) {
    return pUnlessEmpty(joinNemptiesWithVBar(items), __);
  }

  static public String html_showLineFeedsForPRE(String html) {
    return replace(html, "\n", unicode_newLineArrow() + "\n");
  }

  static public String sourceCodeToHTML_noEncode(String html) {
    return "<pre style=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">" + html + "</pre>";
  }

  static public String hstyle_sourceCodeLikeInRepo() {
    return "padding-left: 1em; padding-top: 0.5em; padding-bottom: 0.5em; background-color: #EEEEEE; border-style: solid; border-color: #666666; border-width: 1px 0px 1px 0px;";
  }

  static public <A> Pair<List<A>, List<A>> filterAntiFilter(Iterable<A> c, Object pred) {
    List<A> yes = new ArrayList();
    List<A> no = new ArrayList();
    if (c != null)
      for (A o : c) (isTrue(callF(pred, o)) ? yes : no).add(o);
    return pair(yes, no);
  }

  static public <A> Pair<List<A>, List<A>> filterAntiFilter(Iterable<A> c, IF1<A, Boolean> pred) {
    return filterAntiFilter(c, (Object) pred);
  }

  static public <A> Pair<List<A>, List<A>> filterAntiFilter(IF1<A, Boolean> pred, Iterable<A> c) {
    return filterAntiFilter(c, pred);
  }

  static public <A> Pair<List<A>, List<A>> filterAntiFilter(Object pred, Iterable<A> c) {
    return filterAntiFilter(c, pred);
  }

  static public <A> A highestBy(Iterable<A> l, Object f) {
    return highestByFunction(l, f);
  }

  static public <A> A highestBy(Object f, Iterable<A> l) {
    return highestByFunction(f, l);
  }

  static public <A> A highestBy(Iterable<A> l, IF1<A, ? extends Comparable> f) {
    return highestByFunction(f, l);
  }

  static public <A> A highestBy(IF1<A, ? extends Comparable> f, Iterable<A> l) {
    return highestByFunction(f, l);
  }

  static public String squareBracketIfNempty(String s) {
    return empty(s) ? "" : squareBracket(s);
  }

  static public boolean cic(Collection<String> l, String s) {
    return containsIgnoreCase(l, s);
  }

  static public boolean cic(String[] l, String s) {
    return containsIgnoreCase(l, s);
  }

  static public boolean cic(String s, char c) {
    return containsIgnoreCase(s, c);
  }

  static public boolean cic(String a, String b) {
    return containsIgnoreCase(a, b);
  }

  static public String hbuttonLink(String url, String text, Object... params) {
    return hbuttonOnClick(text, "location.href=" + jsQuote(url) + ";", params);
  }

  static public String nLines(long n) {
    return n2(n, "line");
  }

  static public String nLines(Collection l) {
    return nLines(l(l));
  }

  static public String nLines(String s) {
    return nLines(countLines(s));
  }

  static public String p_alignRight(String s, Object... params) {
    return p(s, params_stylePlus(params, "text-align: right"));
  }

  static public String small(Object contents, Object... params) {
    return tag("small", contents, params);
  }

  static public String span_title(String title, Object contents) {
    return spanTitle(title, contents);
  }

  static public String regexpReplace(String s, String pat, Object f) {
    return regexReplace(s, pat, f);
  }

  static public String regexpReplace(String s, String pat, IF1<Matcher, String> f) {
    return regexReplace(s, pat, f);
  }

  static public String gazelle_postMentionRegexp() {
    return regexpCaseInsensitivePrefix() + "\\bpost\\s+(\\d+)";
  }

  static public List<Concept> allBackRefs(Concept c) {
    IdentityHashMap<Concept, Boolean> l = new IdentityHashMap();
    if (c != null && c.backRefs != null)
      for (Concept.Ref r : cloneList(c.backRefs)) l.put(r.concept(), true);
    return keysList(l);
  }

  static public String hInitWebSocket(Object... __) {
    String wsVar = optPar("wsVar", __, "ws");
    String onOpen = (String) (optPar("onOpen", __));
    String onMessage = (String) (optPar("onMessage", __));
    String readyMsg = optPar("readyMsg", __, "WebSocket ready!");
    return hreconnectingWebSockets() + hscript("\r\n      var wsReady = false;\r\n      var wsInitialMsgs = [];\r\n      var wsVerbose = false;\r\n      var " + wsVar + " = new ReconnectingWebSocket(((window.location.protocol === \"https:\") ? \"wss://\" : \"ws://\") + window.location.host + \"/\");\r\n      \r\n      " + wsVar + ".onopen = function(event) {\r\n        wsReady = true;\r\n        console.log(" + jsQuote(readyMsg) + ");\r\n        wsInitialMsgs.forEach(function(msg) {\r\n          if (wsVerbose) console.log(\"Sending initial msg: \" + msg);\r\n          ws.send(msg);\r\n        });\r\n        " + jsDropTrailingComments(onOpen) + " };\r\n        \r\n      " + wsVar + ".onmessage = function(event) {\r\n        " + unnull(onMessage) + "\r\n      };\r\n      \r\n      // add an initial message to send when websocket opens\r\n      // also send it now if ws is open already\r\n      function wsInitialMsg(msg) {\r\n        wsInitialMsgs.push(msg);\r\n        if (wsReady) {\r\n          if (wsVerbose) console.log(\"Sending initial msg: \" + msg);\r\n          ws.send(msg);\r\n        }\r\n      }\r\n    ");
  }

  static public String div_vbar(String... items) {
    return div_vbar(asList(items));
  }

  static public String div_vbar(Collection<String> items, Object... params) {
    return divUnlessEmpty(joinNemptiesWithVBar(items), params);
  }

  static public <A> A getVar(IF0<A> v) {
    return v == null ? null : v.get();
  }

  static public <A extends Concept> A uniq(Class<A> c, Object... params) {
    return uniqueConcept(c, params);
  }

  static public <A extends Concept> A uniq(Concepts cc, Class<A> c, Object... params) {
    return uniqueConcept(cc, c, params);
  }

  static public <A> List<A> itemPlus(A a, Collection<A> l) {
    return itemPlusList(a, l);
  }

  static public <A, B> Map<A, B> applyFunctionToValue(IF1<A, A> f, A key, Map<A, B> map) {
    return applyFunctionToMapValue(key, f, map);
  }

  static public <A, B> Map<A, B> applyFunctionToValue(IF1<A, A> f, Map<A, B> map, A... keys) {
    for (A key : unnull(keys)) applyFunctionToValue(f, key, map);
    return map;
  }

  static public String joinWithBR(Iterable<String> l) {
    return join("<br>\n", l);
  }

  static public String joinWithBR(String... l) {
    return joinWithBR(asList(l));
  }

  static public <A> void listSet(List<A> l, int i, A a, A emptyElement) {
    if (i < 0)
      return;
    while (i >= l(l)) l.add(emptyElement);
    l.set(i, a);
  }

  static public <A> void listSet(List<A> l, int i, A a) {
    listSet(l, i, a, null);
  }

  static public Map<String, Object> cgetAll_cloneLists(Concept c, Collection<String> fields) {
    return mapToValues(fields, f -> cloneIfList(cget(c, f)));
  }

  static public MetaTransformer defaultMetaTransformer() {
    return metaTransformer_transformableAndList();
  }

  static public <A> A printStruct(String prefix, A a) {
    printStructure(prefix, a);
    return a;
  }

  static public <A> A printStruct(A a) {
    printStructure(a);
    return a;
  }

  static public void logStructure(File logFile, Object o) {
    logQuoted(logFile, structure(o));
  }

  static public void logStructure(String fileName, Object o) {
    logStructure(getProgramFile(fileName), o);
  }

  static public void logStructure(String progID, String fileName, Object o) {
    logStructure(getProgramFile(progID, fileName), o);
  }

  static public int indexOfPred(List l, Object pred) {
    for (int i = 0; i < l(l); i++) if (checkCondition(pred, l.get(i)))
      return i;
    return -1;
  }

  static public <A, B> int indexOfPred(List<A> l, IF1<A, B> pred) {
    return indexOfPred(l, (Object) pred);
  }

  static public String hcrud_mergeTables(String table1, String table2, String connector) {
    List<String> tok1 = htmlTok(table1), tok2 = htmlTok(table2);
    List<String> tbl1 = first(findContainerTag(tok1, "table"));
    List<String> tbl2 = first(findContainerTag(tok2, "table"));
    List<List<String>> rows1 = findContainerTag(tbl1, "tr");
    List<List<String>> rows2 = findContainerTag(tbl2, "tr");
    print("rows1: " + l(rows1) + ", rows2: " + l(rows2));
    int nRows = max(l(rows1), l(rows2));
    List<String> rows = new ArrayList();
    for (int i = 0; i < nRows; i++) {
      List<String> row1 = dropFirstTwoAndLastTwo(get(rows1, i));
      List<String> row2 = dropFirstTwoAndLastTwo(get(rows2, i));
      row2 = dropFirst(row2, indexOfIC(row2, "</td>") + 1);
      rows.add(tr(join(concatLists(row1, ll(td(connector)), row2))));
    }
    replaceTokens(tbl1, 2, l(tbl1) - 2, lines(rows));
    return join(tok1);
  }

  static public String firstWhereFirstLongIs(Collection<String> l, long i) {
    return firstThat(l, s -> parseFirstLong(s) == i);
  }

  static public String himgsnippet(String imageID, Object... params) {
    return hsnippetimg(imageID, params);
  }

  static public String hjssrc(String src) {
    return hjavascript_src(src);
  }

  static public String renderHowLongAgoPlusModified(long timestamp, long timestamp2, Object... __) {
    String spacer = optPar("spacer", __, ", modified ");
    if (timestamp2 == 0)
      timestamp2 = timestamp;
    String s = renderHowLongAgo(timestamp);
    String s2 = renderHowLongAgo(timestamp2);
    return eq(s, s2) ? s : s + ", modified " + s2;
  }

  static public List<String> gazelle_navLinks(String baseLink, String searchQuery, Object... __) {
    boolean withTeam = optPar("withTeam", __, true);
    boolean withStats = optPar("withStats", __, true);
    boolean flat = boolPar("flat", __);
    List more = ll(ahref(baseLink + "/deletedPosts", "Deleted Posts"));
    return llNonNulls(flattenStringArray2(ahref(baseLink + "/crud/UserPost?cmd=new", "New Post"), searchQuery != null ? hform(hinputfield("q", searchQuery, "style", "width: 75px") + " " + hsubmit("Search"), "style", "display: inline", "action", baseLink + "/search") : ahref(baseLink + "/search", "Search"), ahref(baseLink + "/rootPosts", "Root Posts"), ahref(baseLink + "/allPosts", "All Posts"), ahref(baseLink + "/latestPosts", "Latest Posts"), ahref(baseLink + "/latestModifiedPosts", "Latest Changes"), ahref(baseLink + "/mainPosts", "Main Posts"), !withTeam ? null : ahref(baseLink + "/team", "Team"), flat ? more : hPopDownButton(flattenStringArray2(!withStats ? null : ahref(baseLink + "/stats", "Stats"), more))));
  }

  static public Map mapToValues(Iterable l, Object f) {
    return mapKeyAndFunction(l, f);
  }

  static public Map mapToValues(Object f, Iterable l) {
    return mapKeyAndFunction(f, l);
  }

  static public <A, B> Map<A, B> mapToValues(Iterable<A> l, IF1<A, B> f) {
    return mapKeyAndFunction(f, l);
  }

  static public <A, B> Map<A, B> mapToValues(IF1<A, B> f, Iterable<A> l) {
    return mapKeyAndFunction(f, l);
  }

  static public <A, B, C> Map<A, C> mapToValues(Map<A, B> map, IF2<A, B, C> f) {
    return mapKeyAndFunction(map, f);
  }

  static public File programFile(String name) {
    return prepareProgramFile(name);
  }

  static public File programFile(String progID, String name) {
    return prepareProgramFile(progID, name);
  }

  static public String regexpFirstGroupIC(String pat, String s) {
    Matcher m = regexpIC(pat, s);
    if (m.find())
      return m.group(1);
    else
      return null;
  }

  static public Map safeUnstructMapAllowingClasses(String s, Class... allowedClasses) {
    return (Map) safeUnstructureAllowingClasses(s, allowedClasses);
  }

  static public List<String> uniquifyAndSortAlphaNum(Collection<String> l) {
    return sortedAlphaNum(uniquify(l));
  }

  static public List<String> allToUpper(Collection<String> l) {
    List<String> x = new ArrayList(l(l));
    if (l != null)
      for (String s : l) x.add(upper(s));
    return x;
  }

  static public Object dm_call(Object moduleOrID, String method, Object... args) {
    Object mod = dm_getModule(moduleOrID);
    if (mod == null)
      return null;
    AutoCloseable __1 = dm_enter(mod);
    try {
      return call_withVarargs(mod, method, args);
    } finally {
      _close(__1);
    }
  }

  static public <A, B> List<A> asForPairsWithB(B b, Iterable<Pair<A, B>> l) {
    List<A> out = new ArrayList();
    for (Pair<A, B> p : unnull(l)) if (eq(pairB(p), b))
      out.add(pairA(p));
    return out;
  }

  static public <A, B> List<A> asForPairsWithB(Iterable<Pair<A, B>> l, B b) {
    return asForPairsWithB(b, l);
  }

  static public String nPosts(long n) {
    return n2(n, "post");
  }

  static public String nPosts(Collection l) {
    return nPosts(l(l));
  }

  static public String nPosts(Map map) {
    return nPosts(l(map));
  }

  static public String formatDoubleX(double d, int digits) {
    return formatDoubleFull(d, digits);
  }

  static public String str_toM(long l) {
    return n2(toM(l)) + " MB";
  }

  static public List<String> listToTopTenCI(Collection<String> l) {
    return asCIMultiSet(l).highestFirst();
  }

  static public boolean fileNempty(File f) {
    return fileNotEmpty(f);
  }

  static public Map<String, String> decodeHQuery(String query) {
    Map<String, String> map = new HashMap();
    for (String s : splitAtAmpersand(query)) {
      int i = s.indexOf('=');
      if (i >= 0)
        map.put(urldecode(s.substring(0, i)), urldecode(s.substring(i + 1)));
    }
    return map;
  }

  static public <A> A firstThat(Iterable<A> l, Object pred) {
    if (l != null)
      for (A a : l) if (checkCondition(pred, a))
        return a;
    return null;
  }

  static public <A> A firstThat(A[] l, IF1<A, Boolean> pred) {
    if (l != null)
      for (A a : l) if (pred.get(a))
        return a;
    return null;
  }

  static public <A> A firstThat(Iterable<A> l, IF1<A, Boolean> pred) {
    return firstThat(l, (Object) pred);
  }

  static public <A> A firstThat(IF1<A, Boolean> pred, Iterable<A> l) {
    return firstThat(l, pred);
  }

  static public Map<String, String> parseColonPropertyCIMap(String text) {
    return parseColonProperties(text, ciMap());
  }

  static public Object serveFile(File file) {
    return subBot_serveFile(file);
  }

  static public Object serveFile(File file, String mimeType) {
    return subBot_serveFile(file, mimeType);
  }

  static public String faviconMimeType() {
    return "image/x-icon";
  }

  static public String gazelle_textURL(long postID) {
    return gazelle_server() + "text/" + postID;
  }

  static public Object postJSONPage(String url, Object... params) {
    return jsonDecode(postPage(url, params));
  }

  static public boolean hasLock(Lock lock) {
    return ((ReentrantLock) lock).isHeldByCurrentThread();
  }

  static public String mL_raw(String name) {
    return mechList_raw(name);
  }

  static public boolean eqOrSame(Object a, Object b) {
    return a == null ? b == null : a == b || b != null && a.equals(b);
  }

  static public void clear(Collection c) {
    if (c != null)
      c.clear();
  }

  static public void clear(Map map) {
    if (map != null)
      map.clear();
  }

  static public <A> A reverseGet(List<A> l, int idx) {
    if (l == null || idx < 0)
      return null;
    int n = l(l);
    return idx < n ? l.get(n - 1 - idx) : null;
  }

  static public List<String> mapToLines(Map map) {
    List<String> l = new ArrayList();
    for (Object key : keys(map)) l.add(str(key) + " = " + str(map.get(key)));
    return l;
  }

  static public String mapToLines(Map map, Object f) {
    return lines(map(map, f));
  }

  static public String mapToLines(Object f, Map map) {
    return lines(map(map, f));
  }

  static public String mapToLines(Object f, Iterable l) {
    return lines(map(f, l));
  }

  static public <A> String mapToLines(Iterable<A> l, IF1<A, String> f) {
    return mapToLines((Object) f, l);
  }

  static public <A> String mapToLines(IF1<A, String> f, Iterable<A> l) {
    return mapToLines((Object) f, l);
  }

  static public <A, B> String mapToLines(Map<A, B> map, IF2<A, B, String> f) {
    return lines(map(map, f));
  }

  static public String stringIf(boolean b, String s) {
    return stringIfTrue(b, s);
  }

  static public float score(Scored s) {
    return s == null ? 0 : s.score();
  }

  static public String formatDouble_significant2(double d, int digits) {
    try {
      digits -= max(0, Math.floor(Math.log10(abs(d)) + 1));
      return formatDouble(d, digits);
    } catch (Throwable _e) {
      print("Had number: " + d + ", digits: " + digits);
      throw rethrow(_e);
    }
  }

  static public File pathToJavaxJar() {
    IResourceLoader rl = vm_getResourceLoader();
    if (rl != null)
      return rl.pathToJavaXJar();
    return pathToJavaxJar_noResourceLoader();
  }

  static public File pathToJavaxJar_noResourceLoader() {
    try {
      int x = latestInstalledJavaX();
      File xfile = new File(userHome(), ".javax/x" + Math.max(x, 30) + ".jar");
      if (!xfile.isFile()) {
        print("Saving " + f2s(xfile));
        String url = x30JarServerURL();
        byte[] data = loadBinaryPage(url);
        if (data.length < 1000000)
          throw fail("Could not load " + url);
        saveBinaryFile(xfile.getPath(), data);
      }
      return xfile;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A popFirst(List<A> l) {
    if (empty(l))
      return null;
    A a = first(l);
    l.remove(0);
    return a;
  }

  static public <A> A popFirst(Collection<A> l) {
    if (empty(l))
      return null;
    A a = first(l);
    l.remove(a);
    return a;
  }

  static public <A> List<A> popFirst(int n, List<A> l) {
    List<A> part = cloneSubList(l, 0, n);
    removeSubList(l, 0, n);
    return part;
  }

  static public <A, B> boolean isA(Either<A, B> e) {
    return eitherIsA(e);
  }

  static public Object process(String processorID, Object in) {
    return process(processorID, in, "in");
  }

  static public Object process(String processorID, Object in, String outVar) {
    try {
      Class processor = hotwire(processorID);
      set(processor, "in", in);
      call(processor, "main", new Object[] { new String[0] });
      return get(processor, outVar);
    } catch (Exception e) {
      throw new RuntimeException("Error in #" + parseSnippetID(processorID), e);
    }
  }

  static public <A> List<A> syncCloneAndClearList(Collection<A> l) {
    if (l == null)
      return emptyList();
    synchronized (collectionMutex(l)) {
      List<A> l2 = cloneList(l);
      l.clear();
      return l2;
    }
  }

  static public List<String> findMainClass(List<String> tok) {
    for (List<String> c : reversedList(allClasses(tok))) {
      String name = getClassDeclarationName(c);
      if (eq(name, "main") || name.startsWith("x"))
        return c;
    }
    return findBlock("m {", tok);
  }

  static public boolean useDummyMainClasses() {
    return true;
  }

  static public boolean tok_classHasModifier(List<String> classDecl, String modifier) {
    if (classDecl == null)
      return false;
    int i = classDecl.indexOf("class");
    return subList(classDecl, 0, i).contains(modifier);
  }

  static public boolean javaCompileToJar_useRAMDisk = false;

  static public File javaCompileToJar_optionalRename(String src, File destJar, String progIDForRename) {
    return javaCompileToJar_optionalRename(src, "", destJar, progIDForRename);
  }

  static synchronized public File javaCompileToJar_optionalRename(String src, String dehlibs, File destJar, String progIDForRename) {
    return javaCompileToJar_optionalRename(src, dehlibs, destJar, progIDForRename, null);
  }

  static synchronized public File javaCompileToJar_optionalRename(String src, String dehlibs, File destJar, String progIDForRename, String progID) {
    String javaTarget = null;
    String dummyClass = "main";
    if (progIDForRename != null) {
      dummyClass = dummyMainClassName(progIDForRename);
      src += "\nclass " + dummyClass + "{}";
    }
    String md5 = md5(src);
    File jar = destJar;
    Class j = getJavaX();
    if (javaTarget != null)
      setOpt(j, "javaTarget", javaTarget);
    File srcDir = tempDir();
    String className = "main";
    String fileName = dummyClass + ".java";
    List<String> tok = javaTok(src);
    String packageName = tok_packageName(tok);
    if (packageName != null)
      fileName = packageName.replace(".", "/") + "/" + tok_firstClassName(tok) + ".java";
    File mainJava = new File(srcDir, fileName);
    saveTextFile(mainJava, src);
    File classesDir = javaCompileToJar_useRAMDisk ? tempDirPossiblyInRAMDisk() : tempDir();
    try {
      List<File> libraries = new ArrayList();
      Matcher m = Pattern.compile("\\d+").matcher(dehlibs);
      while (m.find()) {
        String libID = m.group();
        assertTrue(isSnippetID(libID));
        libraries.add(loadLibraryOrSrcLib(libID));
      }
      libraries.add(pathToJavaxJar());
      String compilerOutput;
      try {
        compilerOutput = (String) call(j, "compileJava", srcDir, libraries, classesDir);
      } catch (Throwable e) {
        compilerOutput = (String) get(getJavaX(), "javaCompilerOutput");
        compilerOutput = indentx("> ", cleanJavaCompilerOutput(compilerOutput));
        if (!swic(e.getMessage(), "Java compiler returned errors."))
          compilerOutput = appendWithNewLine(compilerOutput, str(e));
        throw fail(compilerOutput, e);
      }
      compilerOutput = cleanJavaCompilerOutput("Annotation processing got disabled, since it requires a 1.6 compliant JVM");
      if (nempty(compilerOutput)) {
        print("Compiler said: " + compilerOutput);
      }
      if (!anyFileWithExtensionInDir(classesDir, ".class")) {
        printWithIndent("SRC> ", src);
        throw fail("No classes generated (was compiling " + nChars(src) + ")");
      }
      saveTextFile(new File(classesDir, "main.java"), src);
      if (nempty(dehlibs))
        saveTextFile(new File(classesDir, "libraries"), dehlibs);
      saveTextFile(new File(classesDir, "progID"), progID);
      dir2zip_recurse_verbose = false;
      int n = dir2zip_recurse(classesDir, jar);
      return jar;
    } finally {
      if (isInRAMDisk(classesDir))
        deleteDirectory(classesDir);
    }
  }

  static public void touchFile(File file) {
    try {
      closeRandomAccessFile(newRandomAccessFile(mkdirsForFile(file), "rw"));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public File actualUserDir() {
    return new File(actualUserHome());
  }

  static public File actualUserDir(String path) {
    return new File(actualUserHome(), path);
  }

  static public int hashCodeFor(Object a) {
    return a == null ? 0 : a.hashCode();
  }

  static public String joinWithVBar(Iterable<String> l) {
    return join(" | ", l);
  }

  static public String joinWithVBar(String... l) {
    return joinWithVBar(asList(l));
  }

  static public String ahref_possiblyTargetBlank(String link, Object contents, boolean targetBlank, Object... params) {
    return ahref(link, contents, targetBlank ? paramsPlus(params, "target", "_blank") : params);
  }

  static public <A> A setAll(A o, Map<String, Object> fields) {
    if (fields == null)
      return o;
    for (String field : keys(fields)) set(o, field, fields.get(field));
    return o;
  }

  static public <A> A setAll(A o, Object... values) {
    failIfOddCount(values);
    for (int i = 0; i + 1 < l(values); i += 2) {
      String field = (String) values[i];
      Object value = values[i + 1];
      set(o, field, value);
    }
    return o;
  }

  static public Object[] filterParams(Object[] params, Object... keys) {
    Set set = asSet(keys);
    List l = new ArrayList();
    for (int i = 0; i < l(params); i += 2) if (contains(set, params[i])) {
      l.add(params[i]);
      l.add(params[i + 1]);
    }
    return asObjectArray(l);
  }

  static public void addIfNempty(Collection<String> l, String s) {
    if (nempty(s))
      l.add(s);
  }

  static public void addIfNempty(Collection l, Map m) {
    if (nempty(m))
      l.add(m);
  }

  static public void addIfNempty(Collection l, Collection c) {
    if (nempty(c))
      l.add(c);
  }

  static public void fixACCInClassLoader(Object o) {
    try {
      AccessControlContext acc = vm_globalACC();
      if (acc != null)
        replaceACCInClassLoader(o, acc);
    } catch (Throwable __e) {
      _handleException(__e);
    }
  }

  static public String systemHashCodeHex(Object o) {
    return intToHex(identityHashCode(o));
  }

  static public <A, B> LinkedHashMap<A, B> cloneLinkedHashMap(Map<A, B> map) {
    return map == null ? new LinkedHashMap() : new LinkedHashMap(map);
  }

  static public Set emptySet() {
    return new HashSet();
  }

  static public <A, B> Map.Entry<A, B> firstEntry(Map<A, B> map) {
    return empty(map) ? null : first(map.entrySet());
  }

  static public <A> StringTree2<A> stringTree2_javaTok(Map<String, A> entries) {
    StringTree2<A> tree = new StringTree2();
    for (String key : keys(entries)) addToStringTree(tree, javaTokC(key), entries.get(key));
    return tree;
  }

  static public <A, B> void putMultipleKeys(Map<A, B> map, Collection<A> keys, B value) {
    if (map == null || keys == null)
      return;
    for (A key : keys) map.put(key, value);
  }

  static public List<Integer> allPlus(final int x, List<Integer> l) {
    return map(l, new F1<Integer, Integer>() {

      public Integer get(Integer i) {
        try {
          return i + x;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "i+x";
      }
    });
  }

  static public List<Integer> jfindAll(List<String> tok, String pat) {
    return jfindAll(tok, pat, null);
  }

  static public List<Integer> jfindAll(List<String> tok, String pat, ITokCondition condition) {
    return jfindAll(tok, jfind_preprocess(javaTok(pat)), condition);
  }

  static public List<Integer> jfindAll(List<String> tok, List<String> tokPat) {
    return jfindAll(tok, tokPat, null);
  }

  static public List<Integer> jfindAll(List<String> tok, List<String> tokPat, ITokCondition condition) {
    TokCondition cond = toTokCondition(condition);
    String[] toks = toStringArray(codeTokensOnly(tokPat));
    int i = -1;
    List<Integer> l = new ArrayList();
    while ((i = findCodeTokens(tok, i + 1, false, toks, cond)) >= 0) l.add(i);
    return l;
  }

  static public List<String> tok_subListWithoutBorderNTokens(List<String> tok, int i, int j) {
    List<String> tok2 = cloneSubList(tok, i & (~1), j | 1);
    tok2.set(0, "");
    tok2.set(l(tok2) - 1, "");
    return tok2;
  }

  static public String tok_expandIfQuoted(String s) {
    return applyTranspilationFunction(__103 -> tok_expandIfQuoted(__103), s);
  }

  static public void tok_expandIfQuoted(List<String> tok) {
    jreplace(tok, "if <quoted> || <quoted>", "if (matchOneOf(s, m, $2, $5))");
    jreplace_dyn(tok, "if <quoted>", new F2<List<String>, Integer, String>() {

      public String get(List<String> tok, Integer cIdx) {
        try {
          String s = unquote(tok.get(cIdx + 2));
          List<String> l = new ArrayList();
          for (String pat : splitAtJavaToken(s, "|")) {
            if (pat.contains("..."))
              l.add("matchX(" + quote(trim(pat)) + ", s, m)");
            else if (javaTok(pat).contains("*"))
              l.add("match(" + quote(trim(pat)) + ", s, m)");
            else
              l.add("match(" + quote(trim(pat)) + ", s)");
          }
          return "if (" + join(" || ", l) + ")";
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "S s = unquote(tok.get(cIdx+2));\r\n    //print(\"multimatch: \" + quote(s));\r\n   ...";
      }
    }, new TokCondition() {

      public boolean get(final List<String> tok, final int i) {
        return javaTokC(unquote(tok.get(i + 3))).contains("|");
      }
    });
    tok_transpileIfQuoted_dollarVars(tok);
    jreplace(tok, "if <quoted>", "if (find3plusRestsX($2, s, m))", new TokCondition() {

      public boolean get(final List<String> tok, final int i) {
        return startsAndEndsWith(unquote(tok.get(i + 3)), "...");
      }
    });
    jreplace(tok, "if <quoted>", "if (matchStartX($2, s, m))", new TokCondition() {

      public boolean get(final List<String> tok, final int i) {
        return unquote(tok.get(i + 3)).endsWith("...");
      }
    });
    jreplace(tok, "if <quoted>", "if (match($2, s))", new TokCondition() {

      public boolean get(final List<String> tok, final int i) {
        return !javaTokC(unquote(tok.get(i + 3))).contains("*");
      }
    });
    jreplace(tok, "if <quoted>", "if (match($2, s, m))");
    jreplace(tok, "if match <quoted>", "if (match($3, s, m))");
  }

  static public <A, B> void doublePut(Map<A, B> map, A key1, A key2, B value) {
    map.put(key1, value);
    map.put(key2, value);
  }

  static public boolean isSingleQuoteIdentifier(String s) {
    if (l(s) < 2 || s.charAt(0) != '\'' || !Character.isJavaIdentifierStart(s.charAt(1)))
      return false;
    for (int i = 2; i < l(s); i++) if (!Character.isJavaIdentifierPart(s.charAt(i)))
      return false;
    return true;
  }

  static public String fromSingleQuoteIdentifier(String s) {
    return isSingleQuoteIdentifier(s) ? substring(s, 1) : s;
  }

  static public boolean tok_tokenBeforeLonelyReturnValue(List<String> tok, int i) {
    String t = get(tok, i);
    if (l(t) == 1 && "{};".contains(t) || eq(t, "else"))
      return true;
    if (!eq(t, ")"))
      return false;
    int level = 0;
    while (i > 0) {
      if (eq(tok.get(i), ")"))
        ++level;
      if (eq(tok.get(i), "("))
        --level;
      if (level == 0)
        return eq(get(tok, i - 2), "if");
      i -= 2;
    }
    return false;
  }

  static public <A> Pair<A, Integer> stringTreeLeafValue2(StringTree2<A> tree, List<String> items) {
    int i = 0;
    while (tree != null && i < l(items)) {
      if (tree.leafValue != null)
        return pair(tree.leafValue, i);
      tree = tree.children.get(items.get(i));
      ++i;
    }
    return null;
  }

  static public <A> void mapPutInRange(Map<Integer, A> map, int start, int end, A value) {
    if (map != null && value != null)
      for (int i = start; i < end; i++) map.put(i, value);
  }

  static public String neatMechListURL(String listName) {
    return "http://botcompany.de/mech/raw/list/" + urlencode(listName);
  }

  static public boolean getSnippetTitles_verbose = false;

  static public Map<String, String> getSnippetTitles(Collection<String> ids) {
    try {
      if (empty(ids))
        return new HashMap();
      String url = tb_mainServer() + "/tb-int/get-titles.php";
      String ids2 = join(" ", parseSnippetIDs(ids));
      return trimValues(transformKeys(jsonDecodeMap(doPost(mapPlus(standardCredentialsMap(), "ids", ids2), url)), new F1<String, Object>() {

        public Object get(String id) {
          try {
            return fsI(id);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "fsI(id)";
        }
      }));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String dottedSpan(String contents, String title) {
    return span(contents, "title", title, "style", "border-bottom: dotted 1px");
  }

  static public ThreadLocal<Object[]> dynamize_linkParams = new ThreadLocal();

  static public String dynamize_noEncode(String html) {
    List<String> tok = htmlTok(html);
    Pattern p = Pattern.compile(regexp_findSnippetIDs());
    for (int i = 0; i < l(tok); i += 2) {
      Matcher m = p.matcher(tok.get(i).replace("&#", "&~~~"));
      StringBuffer buf = new StringBuffer();
      while (m.find()) {
        String id = m.group(1);
        String link = m.group();
        try {
          link = ahref(snippetLink(id), link, concatArrays(new Object[] { "title", getSnippetTitle_cached(id) }, dynamize_linkParams.get()));
        } catch (Throwable __e) {
          _handleException(__e);
        }
        mreplace(m, buf, link);
      }
      m.appendTail(buf);
      String s = str(buf).replace("&~~~", "&#");
      tok.set(i, s);
    }
    dynamize_linkParams.set(null);
    return join(tok);
  }

  static public String longSnippetLink(String id) {
    return tb_mainServer() + "/tb/show-snippet.php?id=" + parseSnippetID(id);
  }

  static public Map<String, String> standardClassesMap() {
    String sc = loadSnippet("#1003674");
    Map<String, String> map = new HashMap();
    for (String line : tlft_j(sc)) {
      int idx = line.indexOf('/');
      map.put(line.substring(0, idx), line.substring(idx + 1));
    }
    return map;
  }

  static public Boolean not(Boolean b) {
    return b == null ? null : !b;
  }

  static public String ukTimeZone_string() {
    return "Europe/London";
  }

  static public ReliableSingleThread dm_rst(Runnable r) {
    return dm_rst(dm_current_mandatory(), r);
  }

  static public ReliableSingleThread dm_rst(DynModule mod, Runnable r) {
    return dm_rst(mod, new ReliableSingleThread(r));
  }

  static public ReliableSingleThread dm_rst(DynModule mod, ReliableSingleThread rst) {
    rst.enter = dm_rEnter(mod);
    return rst;
  }

  static public void dm_setModuleName(Object module, String name) {
    dm_callModule(module, "setModuleName", name);
  }

  static public void dm_setModuleName(String name) {
    dm_setModuleName(dm_current_mandatory_generic(), name);
  }

  static public void dm_assertFirstSibling() {
    if (!dm_isFirstSiblingModule(dm_current_mandatory_generic()))
      throw fail("Don't start this module multiple times. This instance will exit.");
  }

  static public String dbProgramID() {
    return getDBProgramID();
  }

  static public void ensureConceptClassesAreIndexed(Collection<Class> classes) {
    for (Class c : unnull(classes)) ensureConceptClassIsIndexed(c);
  }

  static public JButton jPopDownButton_noText(final Object... menuParams) {
    return toolTip("Additional commands", jPopDownButton("", menuParams));
  }

  static public Runnable runnableThread(final Runnable r) {
    return new Runnable() {

      public void run() {
        try {
          startThread(r);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "startThread(r)";
      }
    };
  }

  static public Object serve500() {
    return subBot_serve500();
  }

  static public Object serve500(String msg) {
    return subBot_serve500(msg);
  }

  static public void htmlencode_forParams_useV2() {
    htmlencode_forParams_useV2.set(true);
  }

  static public AutoCloseable temp_printPrefix(String prefix) {
    Object oldValue = print_byThread();
    print_setPrefixForThread(prefix);
    return new AutoCloseable() {

      public String toString() {
        return "print_byThread().set(oldValue);";
      }

      public void close() throws Exception {
        print_byThread().set(oldValue);
      }
    };
  }

  static public Map<String, String> decodeURIParams(String query) {
    return decodeHQuery(query);
  }

  static public boolean cset_trueIfChanged(Concept c, Object... values) {
    try {
      return cset(c, values) != 0;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Object subBot_serveFile_maxCache(File file) {
    return subBot_maxCacheHeaders(subBot_serveFile(file));
  }

  static public Object subBot_serveFile_maxCache(File file, String mimeType) {
    return subBot_maxCacheHeaders(subBot_serveFile(file, mimeType));
  }

  static public String mp3mimeType() {
    return "audio/mpeg";
  }

  static public String dropAfterSlash(String s) {
    if (s == null)
      return null;
    int i = s.indexOf('/');
    return i < 0 ? s : rtrim(substring(s, 0, i));
  }

  static public String binaryMimeType() {
    return "application/octet-stream";
  }

  static public Object subBot_maxCacheHeaders(Object response) {
    return callMainBot("maxCacheHeaders", response);
  }

  static public Object serveInputStream(InputStream in, String mimeType) {
    return subBot_serveInputStream(in, mimeType);
  }

  static public BufferedInputStream bufferedFileInputStream(File f) {
    return bufferedInputStream(f);
  }

  static public BufferedInputStream bufferedFileInputStream(File f, int bufSize) {
    try {
      return new BufferedInputStream(new FileInputStream(f), bufSize);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String rawLink(String pageName) {
    return "/" + parseSnippetID(getProgramID()) + "/raw" + addPrefix("/", pageName);
  }

  static public String rawLink() {
    return "/" + parseSnippetID(getProgramID()) + "/raw";
  }

  static public String rawLink(String pageName, String contents) {
    return ahref(rawLink(pageName), contents);
  }

  static public String webChatBotLogsHTML2(final String baseLink, final Map<String, String> params) {
    return withDBLock(new F0<String>() {

      public String get() {
        try {
          List<String> l = new ArrayList();
          for (Conversation conv : sortByCalculatedFieldDesc(list(Conversation.class), new F1<Conversation, Object>() {

            public Object get(Conversation c) {
              try {
                return empty(c.msgs) ? c.created : last(c.msgs).time;
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "empty(c.msgs) ? c.created : last(c.msgs).time";
            }
          })) {
            List<List<Msg>> dialogs = reversed(unnull(conv.oldDialogs));
            if (l(conv.msgs) > 1)
              l.add(webChatBotLogsHTML_formatDialog(str(conv.id), conv.msgs));
            int i = 2;
            for (List<Msg> msgs : dialogs) if (l(msgs) > 1)
              l.add(webChatBotLogsHTML_formatDialog(conv.id + "/" + (i++), msgs));
          }
          int perPage = 50, n = parseIntOpt(params.get("n"));
          return h3_htitle("Chat Logs") + pageNav2(baseLink, l(l), n, perPage, "n") + ul(subList(l, n, n + perPage), null, "style", "margin-top: 1em");
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "new L<S> l;\r\n    for (Conversation conv : sortByCalculatedFieldDesc(list Conv...";
      }
    });
  }

  static public String fileInfo(File f) {
    return renderFileInfo(f);
  }

  static public String fileInfo(String f) {
    return renderFileInfo(newFile(f));
  }

  static public File backupConceptsNow() {
    return backupConceptsNow(db_mainConcepts());
  }

  static public File backupConceptsNow(Concepts cc) {
    if (cc == null)
      return null;
    File f1 = cc.conceptsFile();
    File f2 = fileInSameDir(f1, "backups/concepts.structure" + (cc.useGZIP ? ".gz" : "") + ".backup" + ymd_minus_hms());
    return copyFile(f1, f2);
  }

  static public String hhtml_title_body(String title, Object bodyContents, Object... bodyParams) {
    return hhtml_head_title_body(title, bodyContents, bodyParams);
  }

  static public String nMessages(long n) {
    return n2(n, "message");
  }

  static public String nMessages(Collection l) {
    return nMessages(l(l));
  }

  static public String hstylesheetsrc(String src) {
    return tag("link", "", "rel", "stylesheet", "href", src);
  }

  static public Boolean trueOrNull(boolean b) {
    return b ? Boolean.TRUE : null;
  }

  static public String or2_trim(String a, String b) {
    a = trim(a);
    if (nempty(a))
      return a;
    return trim(b);
  }

  static public String or2_trim(String a, String b, String c) {
    return or2_trim(or2_trim(a, b), c);
  }

  static public String hexColorToCSSRGB(String hex) {
    return empty(hex) ? null : "rgb(" + joinWithComma(rgbToIntList(new RGB(hex))) + ")";
  }

  static public String loadSnippet_cached(String id) {
    return loadSnippet_simpleCache(id);
  }

  static public String lower(String s) {
    return s == null ? null : s.toLowerCase();
  }

  static public char lower(char c) {
    return Character.toLowerCase(c);
  }

  static public String psI_str(String snippetID) {
    return str(psI(snippetID));
  }

  static public String jsBool(boolean b) {
    return b ? "true" : "false";
  }

  static public String hreplaceTitle(String html, String newTitle) {
    return hreplacetag(html, "title", htitle(newTitle));
  }

  static public Object subBot_serveJavaScript(String html) {
    return subBot_serveWithContentType(html, "text/javascript");
  }

  static public <A extends Concept> A conceptWhere(Class<A> c, Object... params) {
    return findConceptWhere(c, params);
  }

  static public <A extends Concept> A conceptWhere(Concepts cc, Class<A> c, Object... params) {
    return findConceptWhere(cc, c, params);
  }

  static public Object subBot_serveFile(File file) {
    return call(getMainBot(), "serveFile", file);
  }

  static public Object subBot_serveFile(File file, String mimeType) {
    return call(getMainBot(), "serveFile", file, mimeType);
  }

  static public Map<String, String> guessMimeTypeFromFileName_map = litmap(".css", "text/css", ".js", "text/javascript");

  static public String guessMimeTypeFromFileName(String name) {
    return guessMimeTypeFromFileName(name, binaryMimeType());
  }

  static public String guessMimeTypeFromFileName(String name, String defaultMimeType) {
    String __1 = guessMimeTypeFromFileName_map.get(fileExtension(name));
    if (!empty(__1))
      return __1;
    return or2(URLConnection.guessContentTypeFromName(name), defaultMimeType);
  }

  static public String afterLastSlash(String s) {
    if (s == null)
      return null;
    int i = s.lastIndexOf('/');
    return i < 0 ? s : substring(s, i + 1);
  }

  static public String hhtml_head_title_body(String title, Object bodyContents, Object... bodyParams) {
    return hhtml(hhead(htitle(title)) + "\n" + hbody(bodyContents, bodyParams));
  }

  static public String hcss_linkColorInherit() {
    return hcss("a { color: inherit; }");
  }

  static public <A extends Concept> Collection<A> conceptsWhere(Class<A> c, Object... params) {
    return findConceptsWhere(c, params);
  }

  static public Collection<Concept> conceptsWhere(String c, Object... params) {
    return findConceptsWhere(c, params);
  }

  static public <A extends Concept> Collection<A> conceptsWhere(Concepts concepts, Class<A> c, Object... params) {
    return findConceptsWhere(concepts, c, params);
  }

  static public <A> List<A> replace(List<A> l, A a, A b) {
    for (int i = 0; i < l(l); i++) if (eq(l.get(i), a))
      l.set(i, b);
    return l;
  }

  static public <A> List<A> replace(A a, A b, List<A> l) {
    return replace(l, a, b);
  }

  static public String replace(String s, String a, String b) {
    return s == null ? null : a == null || b == null ? s : s.replace(a, b);
  }

  static public String replace(String s, char a, char b) {
    return s == null ? null : s.replace(a, b);
  }

  static public String ymd_minus_hm() {
    return ymd() + "-" + hhmm();
  }

  static public Object serveCSVWithFileName(String fileName, String text) {
    Object response = serveWithContentType(text, "text/csv");
    call(response, "addHeader", "Content-Disposition", "inline; filename=\"" + fileName + "\"");
    return response;
  }

  static public NavigableMap<String, String> emojiShortNameMap_cache;

  static public NavigableMap<String, String> emojiShortNameMap() {
    if (emojiShortNameMap_cache == null)
      emojiShortNameMap_cache = emojiShortNameMap_load();
    return emojiShortNameMap_cache;
  }

  static public NavigableMap<String, String> emojiShortNameMap_load() {
    NavigableMap<String, String> map = ciMap();
    for (Map m : rawEmojisList()) {
      String shortName = (String) (m.get("shortname"));
      String emoji = (String) (m.get("emoji"));
      if (startsWith(shortName, ":"))
        map.put(shortName, emoji);
    }
    return map;
  }

  static public String hjavascript_src_withType(String src, Object... __) {
    return hfulltag("script", "", paramsPlus_inFront(__, "src", src, "type", "text/javascript"));
  }

  static public String htableRaw2(List<? extends List> data, List paramsTable, List paramsTR, List paramsTD) {
    StringBuilder buf = new StringBuilder();
    for (List row : data) {
      buf.append(hopeningTag("tr", toObjectArray(paramsTR)));
      for (Object cell : row) buf.append(htd(cell, toObjectArray(paramsTD))).append("\n");
      buf.append("</tr>\n");
    }
    return htag("table", buf, toObjectArray(paramsTable));
  }

  static public <A> List<A> llNonNulls(A... a) {
    List<A> l = new ArrayList();
    for (A x : a) if (x != null)
      l.add(x);
    return l;
  }

  static public <A extends Concept> int conceptCount(Concepts concepts, Class<A> c, Object... params) {
    return countConcepts(concepts, c, params);
  }

  static public <A extends Concept> int conceptCount(Class<A> c, Object... params) {
    return countConcepts(c, params);
  }

  static public int conceptCount() {
    return countConcepts();
  }

  static public int conceptCount(String className) {
    return countConcepts(className);
  }

  static public <A extends Concept> int conceptCount(Concepts concepts, String className) {
    return countConcepts(concepts, className);
  }

  static public int conceptCount(Concepts concepts) {
    return countConcepts(concepts);
  }

  static public String toK_str(long l) {
    return str_toK(l);
  }

  static public File conceptsFile(String progID) {
    return getProgramFile(progID, conceptsFileName());
  }

  static public File conceptsFile() {
    return conceptsFile(dbProgramID());
  }

  static public String renderDBLoadTime() {
    return renderDBLoadTime(db_mainConcepts());
  }

  static public String renderDBLoadTime(Concepts cc) {
    if (cc == null)
      return null;
    return cc.loadTook < 0 ? "unknown" : n2(cc.loadTook) + " ms";
  }

  static public String renderDBSaveTime() {
    return renderDBSaveTime(db_mainConcepts());
  }

  static public String renderDBSaveTime(Concepts cc) {
    if (cc == null)
      return null;
    return cc.lastSaveTook < 0 ? "unknown" : n2(cc.lastSaveTook) + " ms";
  }

  static public String renderHowLongAgo(long timestamp) {
    if (timestamp == 0)
      return "never";
    int seconds = howManySecondsAgo(timestamp);
    if (seconds <= 0)
      return "just now";
    if (seconds < 60)
      return n2(seconds, "second") + " ago";
    int minutes = iround(seconds / 60.0);
    if (minutes < 60)
      return n2(minutes, "minute") + " ago";
    int hours = iround(minutes / 60.0);
    if (hours < 24)
      return n2(hours, "hour") + " ago";
    int days = iround(hours / 24.0);
    return n2(days, "day") + " ago";
  }

  static public List<String> listZIP(File inZip) {
    return listZip(inZip);
  }

  static public String appendSlash(String s) {
    return addSlash(s);
  }

  static public byte[] loadBinaryFromZip(File inZip, String fileName) {
    try {
      ZipFile zip = new ZipFile(inZip);
      try {
        ZipEntry entry = zip.getEntry(fileName);
        if (entry == null)
          return null;
        InputStream fin = zip.getInputStream(entry);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        copyStream(fin, baos);
        fin.close();
        return baos.toByteArray();
      } finally {
        zip.close();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean fileContentsIs(File f, byte[] data) {
    try {
      if (isFile(f) != (data != null))
        return false;
      int l = l(data);
      if (fileSize(f) != l)
        return false;
      BufferedInputStream in = bufferedFileInputStream(f);
      try {
        for (int ofs = 0; ofs < l; ofs++) if (data[ofs] != (byte) in.read())
          return false;
        return true;
      } finally {
        _close(in);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void touchConcept(Concept c) {
    if (c != null)
      c.change();
  }

  static public String nChanges(long n) {
    return n2(n, "change");
  }

  static public String nChanges(Collection l) {
    return nChanges(l(l));
  }

  static public String squareBracket(String s) {
    return "[" + s + "]";
  }

  static public String hcss_responstableForForms() {
    return hcss("\r\n    .responstableForForms {\r\n      margin: 1em 0;\r\n      /*width: 100%;*/\r\n      overflow: hidden;\r\n      background: #FFF;\r\n      color: #024457;\r\n      border-radius: 10px;\r\n      border: 1px solid #167F92;\r\n    }\r\n    \r\n    .responstableForForms tr {\r\n      border: 1px solid #D9E4E6;\r\n    }\r\n    .responstableForForms tr:nth-child(odd) {\r\n      background-color: #EAF3F3;\r\n    }\r\n    .responstableForForms th {\r\n      display: none;\r\n      border: 1px solid #FFF;\r\n      background-color: #167F92;\r\n      color: #FFF;\r\n      padding: 1em;\r\n    }\r\n    .responstableForForms th:first-child {\r\n      display: table-cell;\r\n      text-align: center;\r\n    }\r\n    .responstableForForms th:nth-child(2) {\r\n      display: table-cell;\r\n    }\r\n    .responstableForForms th:nth-child(2) span {\r\n      display: none;\r\n    }\r\n    .responstableForForms th:nth-child(2):after {\r\n      content: attr(data-th);\r\n    }\r\n    @media (min-width: 480px) {\r\n      .responstableForForms th:nth-child(2) span {\r\n        display: block;\r\n      }\r\n      .responstableForForms th:nth-child(2):after {\r\n        display: none;\r\n      }\r\n    }\r\n    .responstableForForms td {\r\n      display: block;\r\n      word-wrap: break-word;\r\n      /*max-width: 7em;*/\r\n    }\r\n    .responstableForForms td:first-child {\r\n      display: table-cell;\r\n      text-align: center;\r\n      border-right: 1px solid #D9E4E6;\r\n    }\r\n    @media (min-width: 480px) {\r\n      .responstableForForms td {\r\n        border: 1px solid #D9E4E6;\r\n      }\r\n    }\r\n    .responstableForForms th, .responstableForForms td {\r\n      text-align: left;\r\n      margin: .5em 1em;\r\n    }\r\n    @media (min-width: 480px) {\r\n      .responstableForForms th, .responstableForForms td {\r\n        display: table-cell;\r\n        padding: 1em;\r\n      }\r\n    }\r\n  ");
  }

  static public String hjs_selectize() {
    return "\r\n    <script src=\"https://cdnjs.cloudflare.com/ajax/libs/selectize.js/0.12.6/js/standalone/selectize.min.js\" integrity=\"sha256-+C0A5Ilqmu4QcSPxrlGpaZxJ04VjsRjKu+G82kl5UJk=\" crossorigin=\"anonymous\"></script>\r\n    <link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/selectize.js/0.12.6/css/selectize.bootstrap3.min.css\" integrity=\"sha256-ze/OEYGcFbPRmvCnrSeKbRTtjG4vGLHXgOqsyLFTRjg=\" crossorigin=\"anonymous\" />\r\n  ";
  }

  static public boolean neqOneOf(Object o, Object... l) {
    for (Object x : l) if (eq(o, x))
      return false;
    return true;
  }

  static public boolean isConceptList(Object o) {
    if (!(o instanceof List))
      return false;
    List l = (List) o;
    for (Object x : l) if (!(x instanceof Concept))
      return false;
    return true;
  }

  static public String htmlEncode_nlToBr_withIndents(String s) {
    return nlToBr_withIndents(htmlEncode(s));
  }

  static public <A> void addInFront(List<A> c, A a) {
    addFirst(c, a);
  }

  static public String hjs_imgUploadBase64Encoder() {
    return hscript("\r\n    var imgConverted = false;\r\n    \r\n    function submitWithImageConversion(form) {\r\n      console.log(\"imgConverted: \" + imgConverted + \", form: \" + form);\r\n      if (imgConverted) return true;\r\n      imgConverted = true;\r\n      var file = $('#imgUploader')[0].files[0];\r\n      if (file == null) return true;\r\n      var reader = new FileReader();\r\n\r\n      // delay form submit until reader is done\r\n      reader.onloadend = function () {\r\n        var b64 = reader.result.replace(/^data:.+;base64,/, '');\r\n        $(\"#f_img_base64\").val(b64);\r\n        console.log(\"Got base64 data: \" + b64.length);\r\n        setTimeout(function() {\r\n          $(form).submit();\r\n        }, 1000);\r\n      };\r\n\r\n      reader.readAsDataURL(file);\r\n      return false;\r\n    }\r\n  ");
  }

  static public String himageupload(Object... params) {
    return hfileupload(paramsPlus(params, "accept", "image/png,image/jpeg,image/gif"));
  }

  static public String hhiddenWithIDAndName(String idAndName) {
    return hhiddenWithIDAndName(idAndName, null);
  }

  static public String hhiddenWithIDAndName(String idAndName, Object value, Object... params) {
    return tag("input", "", paramsPlus(params, "type", "hidden", "id", idAndName, "name", idAndName, "value", value));
  }

  static public String hjs_fileUploadBase64Encoder() {
    return hscript("\r\n    var fileConverted = false;\r\n    \r\n    function submitWithFileConversion(form) {\r\n      if (fileConverted) return true;\r\n      fileConverted = true;\r\n      var file = $('#fileUploader')[0].files[0];\r\n      if (file == null) return true;\r\n      var reader = new FileReader();\r\n\r\n      // delay form submit until reader is done\r\n      reader.onloadend = function () {\r\n        var b64 = reader.result.replace(/^data:.+;base64,/, '');\r\n        $(\"#f_file_base64\").val(b64);\r\n        console.log(\"Got base64 data: \" + b64.length);\r\n        setTimeout(function() {\r\n          $(form).submit();\r\n        }, 1000);\r\n      };\r\n\r\n      reader.readAsDataURL(file);\r\n      return false;\r\n    }\r\n  ");
  }

  static public String hmp3upload(Object... params) {
    return hfileupload(paramsPlus(params, "accept", mp3mimeType()));
  }

  static public Object[] litparams(Object... l) {
    int n = 0, n1 = l(l);
    for (int i = 0; i < n1; i += 2) if (l[i] != null && l[i + 1] != null)
      ++n;
    if (n == 0)
      return null;
    Object[] params = new Object[n * 2];
    int j = 0;
    for (int i = 0; i < n1; i += 2) {
      Object key = l[i], value = l[i + 1];
      if (key != null && value != null) {
        params[j++] = key;
        params[j++] = value;
      }
    }
    return params;
  }

  static public String hfileupload(Object... params) {
    return hinput("", paramsPlus_noOverwrite(params, "type", "file", "name", "thefile"));
  }

  static public <A extends Concept> List<A> sortedByConceptID(Collection<A> c) {
    return sortedByCalculatedField("conceptID", c);
  }

  static public <A> Set<A> joinSets(Collection<A>... l) {
    Set<A> set = similarEmptySet(first(l));
    for (Collection<A> o : l) if (o != null)
      set.addAll(o);
    return set;
  }

  static public String shortName(Object o) {
    return shortClassName(o);
  }

  static public <A> A replaceIfEquals(A a, A b, A c) {
    return replaceIfEqual(a, b, c);
  }

  static public Type type_LS() {
    return new ParameterizedTypeImpl(null, List.class, String.class);
  }

  static public String ol_htmlEncode(String... list) {
    return ol_htmlEncode(asList(list));
  }

  static public String ol_htmlEncode(List<String> list, Object... params) {
    return ol(lmap(__104 -> htmlEncode(__104), list), params);
  }

  static public <A, B> void replaceMap(Map<A, B> dest, Map<A, B> src) {
    if (dest == src)
      return;
    dest.clear();
    dest.putAll(src);
  }

  static public String formatLocalDateWithMinutes(long time) {
    return localDateWithMinutes(time);
  }

  static public String formatLocalDateWithMinutes() {
    return localDateWithMinutes();
  }

  static public String renderColonProperties(Map map) {
    return formatColonProperties(map);
  }

  static public <A, B> String renderColonProperties(List<Pair<A, B>> l) {
    return formatColonProperties(l);
  }

  static public <A> String pnlToStringWithEmptyLines_rtrim(Iterable<A> l) {
    return rtrim(pnlToStringWithEmptyLines(l));
  }

  static public String hcrud_imagePreviewStyle() {
    return "max-width: 200px; max-height: 100px; width: auto; height: auto";
  }

  static public void saveFileVerbose(File f, byte[] data) {
    saveBinaryFileVerbose(f, data);
  }

  static public byte[] base64decode(String s) {
    byte[] alphaToInt = base64decode_base64toint;
    int sLen = s.length();
    int numGroups = sLen / 4;
    if (4 * numGroups != sLen)
      throw new IllegalArgumentException("String length must be a multiple of four.");
    int missingBytesInLastGroup = 0;
    int numFullGroups = numGroups;
    if (sLen != 0) {
      if (s.charAt(sLen - 1) == '=') {
        missingBytesInLastGroup++;
        numFullGroups--;
      }
      if (s.charAt(sLen - 2) == '=')
        missingBytesInLastGroup++;
    }
    byte[] result = new byte[3 * numGroups - missingBytesInLastGroup];
    int inCursor = 0, outCursor = 0;
    for (int i = 0; i < numFullGroups; i++) {
      int ch0 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch1 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch2 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch3 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
      result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
      result[outCursor++] = (byte) ((ch2 << 6) | ch3);
    }
    if (missingBytesInLastGroup != 0) {
      int ch0 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch1 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
      if (missingBytesInLastGroup == 1) {
        int ch2 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
        result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
      }
    }
    return result;
  }

  static public int base64decode_base64toint(char c, byte[] alphaToInt) {
    int result = alphaToInt[c];
    if (result < 0)
      throw new IllegalArgumentException("Illegal character " + c);
    return result;
  }

  static final public byte[] base64decode_base64toint = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 };

  static public String beforeColonOrAll(String s) {
    return takeFirst(smartIndexOf(s, ':'), s);
  }

  static public double elapsedSeconds_timestamp(long time) {
    return toSeconds(now() - time);
  }

  static public String div_floatRight(Object contents, Object... params) {
    return div(contents, params_stylePlus("float: right", params));
  }

  static public String htmlEncode2_gen(Object o) {
    return htmlEncode2(str(o));
  }

  static public String nConversations(long n) {
    return n2(n, "conversation");
  }

  static public String nConversations(Collection l) {
    return nConversations(l(l));
  }

  static public String nConversations(Map map) {
    return nConversations(l(map));
  }

  static public File secretProgramFile(String progID, String fileName) {
    return new File(getSecretProgramDir(progID), fileName);
  }

  static public File secretProgramFile(String fileName) {
    return secretProgramFile(getProgramID(), fileName);
  }

  static public ContentsIndexedList<String> ciContentsIndexedList() {
    return new ContentsIndexedList<String>(ciMap());
  }

  static public <A, B> Map<A, B> mapPlus_inFront(Map<A, B> m, Object... data) {
    LinkedHashMap m2 = new LinkedHashMap();
    litmap_impl(m2, data);
    putAll(m2, m);
    return m2;
  }

  static public <A> int addAndReturnIndex(List<A> l, A a) {
    if (l == null)
      return -1;
    int idx = l.size();
    l.add(a);
    return idx;
  }

  static public String formatCSVFileForExcel2(List<List> rows) {
    String sep = "|";
    return windowsLineBreaks("sep=" + sep + "\n" + mapToLines_rtrim(rows, row -> join(sep, map(row, col -> replace(newLinesToSpaces(str(col)), sep, " ")))));
  }

  static public <A> List<A> itemPlusList(A a, Collection<A> l) {
    return concatLists(ll(a), l);
  }

  static public <A> Set<A> putSetElementsFirst(Collection<A> cl, Collection<A> elements) {
    Set<A> inputSet = asSet(cl);
    LinkedHashSet<A> set = new LinkedHashSet();
    for (A a : unnull(elements)) if (contains(inputSet, a))
      set.add(a);
    addAll(set, cl);
    return set;
  }

  static public <A> Set<A> putSetElementsFirst(Collection<A> cl, A... elements) {
    return putSetElementsFirst(cl, asList(elements));
  }

  static public Cache<MultiMap<String, CountryDialCode>> countryDialCodesMultiMap_cache = new Cache<>(() -> countryDialCodesMultiMap_load());

  static public MultiMap<String, CountryDialCode> countryDialCodesMultiMap() {
    return countryDialCodesMultiMap_cache.get();
  }

  static public MultiMap<String, CountryDialCode> countryDialCodesMultiMap_load() {
    return treeMultiMapIndexByField("dialCode", countryDialCodes());
  }

  static public List<String> splitAtComma_trim(String s) {
    return nempties(trimAll(splitAtComma(s)));
  }

  static public String dialCodeStringForCountryCode(String countryCode) {
    CountryDialCode cdc = countryDialCodeByCountryCode(countryCode);
    return cdc == null ? null : cdc.dialCode;
  }

  static public List collectSorted(Iterable c, String field) {
    return sorted(collect(c, field));
  }

  static public List collectSorted(String field, Iterable c) {
    return collectSorted(c, field);
  }

  static public List concatMap(Object f, Iterable l) {
    return concatLists(map(f, l));
  }

  static public List concatMap(Iterable l, Object f) {
    return concatMap(f, l);
  }

  static public List concatMap(Object f, Object[] l) {
    return concatLists(map(f, l));
  }

  static public List concatMap(Object[] l, Object f) {
    return concatMap(f, l);
  }

  static public <A, B, C extends Iterable<B>> List<B> concatMap(Iterable<A> l, IF1<A, C> f) {
    return concatMap(l, (Object) f);
  }

  static public <A, B, C extends Iterable<B>> List<B> concatMap(IF1<A, C> f, Iterable<A> l) {
    return concatMap(l, f);
  }

  static public String dropPrefix_trim(String prefix, String s) {
    return dropPrefixTrim(prefix, s);
  }

  static public String formatLocalDateWithSeconds(long time) {
    return localDateWithSeconds(time);
  }

  static public String formatLocalDateWithSeconds() {
    return localDateWithSeconds();
  }

  static public String imageSnippetURLOrEmptyGIF(String snippetID) {
    return empty(snippetID) ? smallestTransparentGIFDataURI() : snippetImageURL(snippetID);
  }

  static public Scorer scorerWithSuccessesAndErrors() {
    Scorer scorer = new Scorer();
    scorer.successes = new ArrayList();
    scorer.errors = new ArrayList();
    return scorer;
  }

  static public <A> List<A> sortByFieldDesc(Collection<A> c, final String field) {
    return sortedByFieldDesc(c, field);
  }

  static public <A> List<A> sortByFieldDesc(String field, Collection<A> c) {
    return sortedByFieldDesc(field, c);
  }

  static public Object[] onlyNonNullParams(Object... params) {
    List out = new ArrayList();
    for (int i = 0; i + 1 < l(params); i += 2) if (params[i] != null && params[i + 1] != null) {
      out.add(params[i]);
      out.add(params[i + 1]);
    }
    return toObjectArray(out);
  }

  static public <A extends Concept> A lowestConceptByField(Class<A> c, String field) {
    return lowestConceptByField(db_mainConcepts(), c, field);
  }

  static public <A extends Concept> A lowestConceptByField(Concepts concepts, Class<A> c, String field) {
    IFieldIndex<A, Object> index = concepts.getFieldIndex(c, field);
    if (index instanceof ConceptFieldIndexDesc) {
      Map.Entry e = ((NavigableMap) ((ConceptFieldIndexDesc) index).valueToObject.data).lastEntry();
      return e == null ? null : (A) first((Collection) e.getValue());
    }
    return lowestByField(field, concepts.list(c));
  }

  static public java.util.Timer doAfter(long delay, Object r) {
    return doLater(delay, r);
  }

  static public java.util.Timer doAfter(double delaySeconds, Object r) {
    return doLater(delaySeconds, r);
  }

  static public void registerConcept(Concept c) {
    db_mainConcepts().register(c);
  }

  static public void registerConcept(Concepts cc, Concept c) {
    cc.register(c);
  }

  static public void db() {
    conceptsAndBot();
  }

  static public void db(Integer autoSaveInterval) {
    conceptsAndBot(autoSaveInterval);
  }

  static public void indexConceptFields(Object... params) {
    int i = 0;
    Concepts concepts;
    if (first(params) instanceof Concepts) {
      concepts = (Concepts) first(params);
      ++i;
    } else
      concepts = db_mainConcepts();
    for (; i < l(params); i += 2) indexConceptField(concepts, (Class) params[i], (String) params[i + 1]);
  }

  static public void indexSingletonConcept(Concepts cc, Class<? extends Concept> c) {
    indexConceptField(cc, c, "_dummy");
  }

  static public void indexSingletonConcept(Class<? extends Concept> c) {
    indexSingletonConcept(db_mainConcepts(), c);
  }

  static public Object subBot_noCacheHeaders(Object r) {
    call(r, "addHeader", "Cache-Control", "no-cache, must-revalidate, max-age=0");
    return r;
  }

  static public Object subBot_serveHTML(Object html) {
    return subBot_serveWithContentType(str(html), "text/html");
  }

  static public String html_emojisToUnicode(String s) {
    return join(mapNonCodeTokens(__105 -> emojisToUnicode(__105), htmlTok(s)));
  }

  static public String fullRawLink(String pageName) {
    return (subBot_isHttps() ? "https" : "http") + "://" + domain() + rawLink(pageName);
  }

  static public String unicode_undoArrow() {
    return unicodeFromCodePoint(0x21B6);
  }

  static public String htmldecode_dropAllTags(String html) {
    return htmldecode(dropAllTags(html));
  }

  static public List<String> splitAtVerticalBar(String s) {
    return s == null ? new ArrayList() : trimAll(asList(s.split("\\|")));
  }

  static public String hbuttonOnClick_returnFalse(String text, String onClick, Object... params) {
    return hfulltag("button", text, paramsPlus(params, "onclick", addSuffix(trim(onClick), ";") + " return false;"));
  }

  static public String stringUnless(boolean b, String s) {
    return b ? "" : s;
  }

  static public List<String> text_multipleChoiceSplit(String input, String multipleChoiceSeparator) {
    return trimAll(splitAt(input, dropSpaces(multipleChoiceSeparator)));
  }

  static public TreeSet<String> asCISet(Iterable<String> c) {
    return toCaseInsensitiveSet(c);
  }

  static public TreeSet<String> asCISet(String... x) {
    return toCaseInsensitiveSet(x);
  }

  static public String hcheckbox(String name, boolean checked, Object... params) {
    return tag("input", "", arrayPlus(params, "type", "checkbox", "name", name, checked ? "checked" : null, "1"));
  }

  static public String hcheckbox(String name) {
    return hcheckbox(name, false);
  }

  static public String unicode_crossProduct() {
    return unicodeFromCodePoint(0x2A2F);
  }

  static public String timeInTimeZoneWithOptionalDate_24(String timezone, long time) {
    return timeInTimeZoneWithOptionalDate_24(timeZone(timezone), time);
  }

  static public String timeInTimeZoneWithOptionalDate_24(TimeZone timezone, long time) {
    SimpleDateFormat format = simpleDateFormat("yyyy/MM/dd", timezone);
    String date = format.format(time);
    boolean needDate = neq(date, format.format(now()));
    return (needDate ? date + " " : "") + timeInTimeZone(timezone, time);
  }

  static public String hhead_title(String title) {
    return hhead(htitle(title));
  }

  static public String jsBackLink() {
    return "javascript:history.go(-1)";
  }

  static public String ipToCountry2020_safe(String ip) {
    try {
      return or2(ipToCountry2020(ip), "?");
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return "?";
  }

  static public String replaceSquareBracketVars(String s, Object... params) {
    if (empty(params))
      return s;
    Map<String, Object> vars = mapKeys(__106 -> deSquareBracket(__106), (Map<String, Object>) litcimap(params));
    return regexpReplaceIC(s, "\\[(.+?)\\]", matcher -> {
      String var = matcher.group(1);
      Object val = vars.get(var);
      return val == null ? matcher.group() : str(val);
    });
  }

  static public String dropSpaces(String s) {
    return unnull(s).replace(" ", "");
  }

  static public <A> A lastThat(List<A> l, Object pred) {
    for (int i = l(l) - 1; i >= 0; i--) {
      A a = l.get(i);
      if (checkCondition(pred, a))
        return a;
    }
    return null;
  }

  static public <A> A lastThat(Object pred, List<A> l) {
    return lastThat(l, pred);
  }

  static public <A> A lastThat(IF1<A, Boolean> pred, List<A> l) {
    return lastThat((Object) pred, l);
  }

  static public <A> A lastThat(List<A> l, IF1<A, Boolean> pred) {
    return lastThat(pred, l);
  }

  static public String addSlashPrefix(String s) {
    return addPrefix("/", s);
  }

  static public boolean confirmOKCancel(final Component owner, final String msg) {
    return isTrue(swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          return JOptionPane.showConfirmDialog(owner, msg, "JavaX", JOptionPane.OK_CANCEL_OPTION) == JOptionPane.OK_OPTION;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret JOptionPane.showConfirmDialog(owner,\r\n      msg, \"JavaX\", JOptionPane.OK_...";
      }
    }));
  }

  static public boolean confirmOKCancel(String msg) {
    return confirmOKCancel(null, msg);
  }

  static public JTextField jtextfield() {
    return jTextField();
  }

  static public JTextField jtextfield(String text) {
    return jTextField(text);
  }

  static public JTextField jtextfield(Object o) {
    return jTextField(o);
  }

  static public JPanel showFormTitled2(String title, Object... parts) {
    return showFormTitled_customLayout(formLayouter1(), title, parts);
  }

  static public String gtt(JTextComponent c) {
    return getTextTrim(c);
  }

  static public String gtt(JComboBox cb) {
    return getTextTrim(cb);
  }

  static public JWindow infoBox(String text) {
    return infoMessage(text);
  }

  static public JWindow infoBox(String text, double seconds) {
    return infoMessage(text, seconds);
  }

  static public JWindow infoBox(Throwable e) {
    return infoMessage(e);
  }

  static public void inputText(final String msg, final Object action) {
    inputText(msg, "", action);
  }

  static public void inputText(final String msg, final String defaultText, final Object action) {
    final Object threadInfo = _threadInfo();
    swingLater(new Runnable() {

      public void run() {
        try {
          final JTextField tf = jtextfield(defaultText);
          String title = joinStrings(" | ", msg, programName());
          JComponent form = showFormTitled(title, unnull(msg), tf, new Runnable() {

            public void run() {
              try {
                vmBus_send("inputtingText_OK", threadInfo, msg, tf);
                callF_thread(action, getTextTrim(tf));
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "vmBus_send(\"inputtingText_OK\", threadInfo, msg, tf);\r\n        callF_thread(ac...";
            }
          });
          renameSubmitButton(form, "OK");
          vmBus_send("inputtingText", threadInfo, msg, tf);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "final JTextField tf = jtextfield(defaultText);\r\n    String title = joinString...";
      }
    });
  }

  static public void inputText(String msg, String defaultText, IVF1<String> action) {
    inputText(msg, defaultText, (Object) action);
  }

  static public void inputText(String msg, IVF1<String> action) {
    inputText(msg, (Object) action);
  }

  static public Object subBot_serveRedirect(String url) {
    return call(getMainBot(), "serveRedirect", url);
  }

  static public String html_evaluateIfTags(String html, IF1<String, Boolean> pred) {
    List<String> tok = htmlTok(html);
    boolean anyChange = false;
    while (true) {
      ping();
      List<String> ifTag = first(findContainerTag(tok, "if"));
      if (ifTag == null)
        break;
      anyChange = true;
      int iElse = indexOfIC(ifTag, "<else>");
      boolean val = pred.get(htmlTagFullParamString(second(ifTag)));
      if (val) {
        if (iElse >= 0)
          clearTokens(ifTag, iElse, l(ifTag) - 2);
      } else {
        clearTokens(ifTag, 2, iElse < 0 ? l(ifTag) - 2 : iElse + 1);
      }
      clearToken(ifTag, 1);
      clearToken(ifTag, l(ifTag) - 2);
    }
    return anyChange ? join(tok) : html;
  }

  static public <A> A syncGet(List<A> l, int idx) {
    if (l == null || idx < 0)
      return null;
    synchronized (l) {
      return idx < l(l) ? l.get(idx) : null;
    }
  }

  static public <A, B> B syncGet(Map<A, B> map, A a) {
    if (map == null)
      return null;
    synchronized (map) {
      return map.get(a);
    }
  }

  static public String serveSnippetURL(String snippetID) {
    return "https://botcompany.de/serve/" + psI(snippetID);
  }

  static public <A> IterableIterator<Pair<Integer, A>> iterateWithIndex1(Collection<A> l) {
    return iterateListWithIndex(l, 1);
  }

  static public <A, B> A pairA(Pair<A, B> p) {
    return p == null ? null : p.a;
  }

  static public String ulIfNempty(Collection list, Object... params) {
    return empty(list) ? "" : ul(list, params);
  }

  static public String prependSquareBracketed(Object o) {
    String s = str(o);
    return empty(s) ? "" : squareBracketed(s) + " ";
  }

  static public int countWords(String s) {
    return numberOfWords2(s);
  }

  static public List<String> dropHTMLTags(List<String> tok) {
    return dropAllTags(tok);
  }

  static public String dropHTMLTags(String html) {
    return dropAllTags(html);
  }

  static public boolean isValidInternationalPhoneNumber(String s) {
    InternationalPhoneValidator v = new InternationalPhoneValidator(s);
    v.run();
    if (v.error != null)
      print(v.error);
    return v.valid;
  }

  static public String formatColonProperties(Map map) {
    return mapToLines("joinPairWithColon", mapToPairs(map));
  }

  static public <A, B> String formatColonProperties(List<Pair<A, B>> l) {
    return mapToLines("joinPairWithColon", l);
  }

  static public void sendMailThroughScript(String senderInfo, String from, String to, String subject, String text) {
    List<String> l = splitAt(senderInfo, "#");
    if (l(l) != 2)
      throw fail("Bad mail sender info");
    String url = first(l), pw = second(l);
    print("Sending mail through " + url);
    print("From: " + from);
    print("To: " + to);
    print("Subject: " + subject);
    print("Text:");
    printIndent("> ", text);
    assertStartsWith("OK", postPage(url, "pw", pw, "from", from, "to", to, "subject", subject, "text", text));
  }

  static public Lock appendToFile_lock = lock();

  static public boolean appendToFile_keepOpen = false;

  static public HashMap<String, Writer> appendToFile_writers = new HashMap();

  static public void appendToFile(String path, String s) {
    try {
      Lock __0 = appendToFile_lock;
      lock(__0);
      try {
        mkdirsForFile(new File(path));
        path = getCanonicalPath(path);
        Writer writer = appendToFile_writers.get(path);
        if (writer == null) {
          writer = new BufferedWriter(new OutputStreamWriter(newFileOutputStream(path, true), "UTF-8"));
          if (appendToFile_keepOpen)
            appendToFile_writers.put(path, writer);
        }
        writer.write(s);
        if (!appendToFile_keepOpen)
          writer.close();
      } finally {
        unlock(__0);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void appendToFile(File path, String s) {
    if (path != null)
      appendToFile(path.getPath(), s);
  }

  static public void cleanMeUp_appendToFile() {
    AutoCloseable __3 = tempCleaningUp();
    try {
      Lock __1 = appendToFile_lock;
      lock(__1);
      try {
        closeAllWriters(values(appendToFile_writers));
        appendToFile_writers.clear();
      } finally {
        unlock(__1);
      }
    } finally {
      _close(__3);
    }
  }

  static public <A> A syncNextToLast(List<A> l) {
    if (l == null)
      return null;
    synchronized (l) {
      return nextToLast(l);
    }
  }

  static public <A> void syncRemoveLast(List<A> l) {
    if (l != null)
      synchronized (l) {
        removeLast(l);
      }
  }

  static public void syncRemoveLast(List l, int n) {
    if (l != null)
      synchronized (l) {
        removeLast(l, n);
      }
  }

  static public void syncRemoveLast(int n, List l) {
    syncRemoveLast(l, n);
  }

  static public <A> void syncReplaceCollection(Collection<A> dest, Collection<A> src) {
    if (dest == src)
      return;
    synchronized (collectionMutex(dest)) {
      dest.clear();
      if (src != null)
        dest.addAll(src);
    }
  }

  static public Set asSet(Object[] array) {
    HashSet set = new HashSet();
    for (Object o : array) if (o != null)
      set.add(o);
    return set;
  }

  static public Set<String> asSet(String[] array) {
    TreeSet<String> set = new TreeSet();
    for (String o : array) if (o != null)
      set.add(o);
    return set;
  }

  static public <A> Set<A> asSet(Iterable<A> l) {
    if (l instanceof Set)
      return (Set) l;
    HashSet<A> set = new HashSet();
    for (A o : unnull(l)) if (o != null)
      set.add(o);
    return set;
  }

  static public <A> Set<A> asSet(MultiSet<A> ms) {
    return ms == null ? null : ms.asSet();
  }

  static public List flattenList2(Object... a) {
    List l = new ArrayList();
    if (a != null)
      for (Object x : a) if (x instanceof Collection)
        for (Object sub : (Collection) x) l.addAll(flattenList2(sub));
      else if (x != null)
        l.add(x);
    return l;
  }

  static public String dropUriPrefix(String prefix, String uri) {
    prefix = dropTrailingSlash(prefix);
    if (empty(prefix))
      return uri;
    if (eq(uri, prefix) || startsWith(uri, prefix + "/"))
      return substring(uri, l(prefix));
    return uri;
  }

  static public String nTests(long n) {
    return n2(n, "test");
  }

  static public String nTests(Collection l) {
    return nTests(l(l));
  }

  static public String nErrors(long n) {
    return n2(n, "error");
  }

  static public String nErrors(Collection l) {
    return nErrors(l(l));
  }

  static public String nErrors(Map map) {
    return nErrors(l(map));
  }

  static public String hTitleClean(String title) {
    return htmldecode(dropTagsAndHTMLComments(title));
  }

  static public String hjs_markRowMagic(Object... __) {
    String color = optPar("color", __, "#99f");
    return hjs(replaceDollarVars("\r\n    var rowMagic_hash = window.location.hash.substr(1);\r\n    if (rowMagic_hash)\r\n      $(\"a[name=\" + rowMagic_hash + \"]\").closest('tr').css({ 'background-color' : '$color'});\r\n  ", "color", color));
  }

  static public String hcomment(String text) {
    return "<!-- " + text + " -->";
  }

  static public String renderVars_struct(Object... params) {
    return renderVars(params);
  }

  static public Map<String, Object> allConceptFieldsAsMap(Concept c) {
    Map<String, Object> map = new HashMap();
    for (String field : unnull(conceptFields(c))) map.put(field, cget(c, field));
    return map;
  }

  static public String hreconnectingWebSockets() {
    return hjavascript_src_snippet("#1013374");
  }

  static public String js_evalOnWebSocketMessage() {
    return "\r\n    function(event) {\r\n      var data = JSON.parse(event.data);\r\n      if (data.eval) {\r\n        console.log(\"Evaluating: \" + data.eval);\r\n        var geval = eval; // use global scope\r\n        geval(data.eval);\r\n        console.log(\"Evaluated.\");\r\n      }\r\n    }\r\n  ";
  }

  static public String toString(Object o) {
    return strOrNull(o);
  }

  static public String quoteOr(String s, String whenEmpty) {
    return empty(s) ? whenEmpty : quote(s);
  }

  static public String spaceRoundBracketed(String s) {
    return spacePlusRoundBracketedIfNempty(s);
  }

  static public String nSteps(long n) {
    return n2(n, "step");
  }

  static public String nSteps(Collection l) {
    return nSteps(l(l));
  }

  static public String spacePlusRoundBracketedIfNempty(String s) {
    return nempty(s) ? " " + roundBracket(s) : "";
  }

  static public String newLinesToSpaces2(String s) {
    return newLinesToSpaces_trim(s);
  }

  static public String himgsrc(String src, Object... params) {
    return tag("img", "", arrayPlus(params, "src", src));
  }

  static public boolean deleteFile(File file) {
    return file != null && file.delete();
  }

  static public String orEmptyQuotes(String s) {
    return or2(s, "\"\"");
  }

  static public <A, B> List<Pair<A, B>> zipTwoListsToPairs_longer(List<A> l1, List<B> l2) {
    int n = max(l(l1), l(l2));
    List<Pair<A, B>> out = emptyList(n);
    for (int i = 0; i < n; i++) addPair(out, _get(l1, i), _get(l2, i));
    return out;
  }

  static public <A, B> B syncPut(Map<A, B> map, A key, B value) {
    if (map == null)
      return null;
    synchronized (map) {
      return map.put(key, value);
    }
  }

  static public boolean isValidEmailAddress_simple(String s) {
    return l(s) <= 254 && regexpMatches("^\\S+@\\S+(\\.[^\\.\\s]+)+$", s);
  }

  static public int indexOfIC(List<String> a, String b) {
    return indexOfIgnoreCase(a, b);
  }

  static public int indexOfIC(List<String> a, String b, int i) {
    return indexOfIgnoreCase(a, b, i);
  }

  static public int indexOfIC(String a, String b) {
    return indexOfIgnoreCase(a, b);
  }

  static public int indexOfIC(String a, String b, int i) {
    return indexOfIgnoreCase(a, b, i);
  }

  static public String dropStuffBeforeVerticalBar(String s) {
    int i = indexOf(s, '|');
    return i < 0 ? s : substring(s, i + 1);
  }

  static public <A, B> Map<A, B> filterKeys(Map<A, B> map, Object f) {
    return filterMapByFunctionOnKey(map, f);
  }

  static public <A, B> Map<A, B> filterKeys(Object f, Map<A, B> map) {
    return filterMapByFunctionOnKey(f, map);
  }

  static public <A, B> Map<A, B> filterKeys(IF1<A, Boolean> f, Map<A, B> map) {
    return filterMapByFunctionOnKey((Object) f, map);
  }

  static public <A, B> Map<A, B> filterKeys(Map<A, B> map, IF1<A, Boolean> f) {
    return filterKeys(f, map);
  }

  static public IF1<String, Boolean> swic$(String prefix) {
    return s -> swic(s, prefix);
  }

  static public <A> void syncRemoveAllExceptLast(List<A> l) {
    if (l == null)
      return;
    synchronized (collectionMutex(l)) {
      removeSubList(l, 0, l(l) - 1);
    }
  }

  static public boolean mmo2_matchWithTypos(String pattern, String s) {
    return mmo2_matchWithTypos(pattern, s, 1);
  }

  static public boolean mmo2_matchWithTypos(String pattern, String s, int maxTypos) {
    return mmo2_matchWithTypos(mmo2_parsePattern(pattern), s, maxTypos);
  }

  static public boolean mmo2_matchWithTypos(MMOPattern pattern, String s) {
    return mmo2_matchWithTypos(pattern, s, 1);
  }

  static public boolean mmo2_matchWithTypos(MMOPattern pattern, String s, int maxTypos) {
    if (maxTypos == 0)
      return mmo2_match(pattern, s);
    Integer score = mmo2_levenWithSwapsScore(pattern, s);
    return score != null && score <= maxTypos;
  }

  static public List<IntRange> parseBusinessHours_pcall(String s) {
    try {
      return parseBusinessHours(s);
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return null;
  }

  static public List<IntRange> splitBusinessHoursAtMidnight(List<IntRange> l) {
    return concatLists(map(l, r -> r.end < r.start && r.start > 12 ? ll(intRange(r.start, 24 * 60), intRange(0, r.end)) : ll(r)));
  }

  static public int minuteInDay() {
    return minuteInDay(java.util.Calendar.getInstance());
  }

  static public int minuteInDay(java.util.Calendar c) {
    return hours(c) * 60 + minutes(c);
  }

  static public int minuteInDay(long time) {
    return minuteInDay(calendarFromTime(time));
  }

  static public int minuteInDay(TimeZone tz) {
    return minuteInDay(now(), tz);
  }

  static public int minuteInDay(long time, TimeZone tz) {
    return minuteInDay(calendarFromTime(time, tz));
  }

  static public TimeZone timeZone(String name) {
    return TimeZone.getTimeZone(name);
  }

  static public boolean anyIntRangeContains(Iterable<IntRange> ranges, int i) {
    return any(ranges, r -> intRangeContains(r, i));
  }

  static public int syncL(Collection l) {
    if (l == null)
      return 0;
    synchronized (l) {
      return l.size();
    }
  }

  static public <A> List<A> syncL() {
    return syncList();
  }

  static public <A> int syncLengthLevel2(Collection<? extends Collection> l) {
    int sum = 0;
    for (Collection c : cloneList(l)) sum += syncL(c);
    return sum;
  }

  static public <A> List<A> concatLists_syncIndividual(Iterable<A>... lists) {
    List<A> l = new ArrayList();
    if (lists != null)
      for (Iterable<A> list : lists) syncAddAll(l, list);
    return l;
  }

  static public <A> List<A> concatLists_syncIndividual(Collection<? extends Iterable<A>> lists) {
    List<A> l = new ArrayList();
    if (lists != null)
      for (Iterable<A> list : lists) syncAddAll(l, list);
    return l;
  }

  static public <A> List<A> syncListPlus(Collection<A> l, A... more) {
    if (l == null)
      return asList(more);
    synchronized (collectionMutex(l)) {
      return concatLists(l, asList(more));
    }
  }

  static public <A> void syncClear(Collection<A> c) {
    if (c != null)
      synchronized (collectionMutex(c)) {
        c.clear();
      }
  }

  static public void syncClear(Map map) {
    if (map != null)
      synchronized (collectionMutex(map)) {
        map.clear();
      }
  }

  static public <A> A syncPopLast(List<A> l) {
    if (l == null)
      return null;
    synchronized (l) {
      return popLast(l);
    }
  }

  static public <A> List<A> syncPopLast(int n, List<A> l) {
    if (l == null)
      return null;
    synchronized (l) {
      return popLast(n, l);
    }
  }

  static public <A> List<A> syncShallowCloneElements(List<A> l) {
    return syncLambdaMap(__107 -> shallowClone(__107), l);
  }

  static public <A> List<A> syncAddOrCreate(List<A> l, A a) {
    if (l == null)
      l = syncList();
    l.add(a);
    return l;
  }

  static public <A> A syncLast(List<A> l) {
    if (l == null)
      return null;
    synchronized (l) {
      return last(l);
    }
  }

  static public Class _run(String progID, String... args) {
    Class main = hotwire(progID);
    callMain(main, args);
    return main;
  }

  static public <A> A getWeakRef(Reference<A> ref) {
    return ref == null ? null : ref.get();
  }

  static public String getClientIPFromHeaders(Map<String, String> headers) {
    if (headers == null)
      return null;
    String remoteAddr = (String) (headers.get("remote-addr"));
    String client = (String) (headers.get("x-forwarded-for"));
    if (nempty(client))
      remoteAddr += "," + client;
    return remoteAddr;
  }

  static public boolean stdEq2(Object a, Object b) {
    if (a == null)
      return b == null;
    if (b == null)
      return false;
    if (a.getClass() != b.getClass())
      return false;
    for (String field : allFields(a)) if (neq(getOpt(a, field), getOpt(b, field)))
      return false;
    return true;
  }

  static public int stdHash2(Object a) {
    if (a == null)
      return 0;
    return stdHash(a, toStringArray(allFields(a)));
  }

  static public float clamp(float x, float a, float b) {
    return x < a ? a : x > b ? b : x;
  }

  static public double clamp(double x, double a, double b) {
    return x < a ? a : x > b ? b : x;
  }

  static public int clamp(int x, int a, int b) {
    return x < a ? a : x > b ? b : x;
  }

  static public <A> A _print(String s, A a) {
    return print(s, a);
  }

  static public <A> A _print(A a) {
    return print(a);
  }

  static public void _print() {
    print();
  }

  static public boolean _eq(Object a, Object b) {
    return eq(a, b);
  }

  static public double ratioToPercent(double x, double y) {
    return x * 100 / y;
  }

  static public List<String> scoredSearch_prepare(String query) {
    return map("replacePlusWithSpace", splitAtSpace(query));
  }

  static public <A> void putUnlessZero(Map<A, Integer> map, A key, int value) {
    if (map != null && key != null && value != 0)
      map.put(key, value);
  }

  static public <A> void putUnlessZero(Map<A, Double> map, A key, double value) {
    if (map != null && key != null && value != 0)
      map.put(key, value);
  }

  static public int scoredSearch_score(Iterable<String> l, List<String> words) {
    int score = 0;
    if (l != null)
      for (String s : l) score += scoredSearch_score(s, words);
    return score;
  }

  static public int scoredSearch_score(String s, List<String> words) {
    int score = 0;
    if (nempty(s))
      for (String word : words) score += scoredSearch_score_single(s, word);
    return score;
  }

  static public int scoredSearch_score(String s, String query) {
    return scoredSearch_score(s, scoredSearch_prepare(query));
  }

  static public <A, B> List<A> keysSortedByValuesDesc(final Map<A, B> map) {
    List<A> l = new ArrayList(map.keySet());
    sort(l, mapComparatorDesc(map));
    return l;
  }

  static public <A, B extends Number> A keyWithHighestValue(Map<A, B> map) {
    return keyWithBiggestValue(map);
  }

  static public <A> List<A> uniquify(Collection<A> l) {
    return uniquifyList(l);
  }

  static public <A> List<A> cloneAndClearList(Collection<A> l) {
    List<A> l2 = cloneList(l);
    l.clear();
    return l2;
  }

  static public <A, B> List<B> lookupAllOpt(Map<A, B> map, Collection<A> l) {
    List<B> out = new ArrayList();
    if (l != null)
      for (A a : l) addIfNotNull(out, map.get(a));
    return out;
  }

  static public <A, B> List<B> lookupAllOpt(Collection<A> l, Map<A, B> map) {
    return lookupAllOpt(map, l);
  }

  static public <A> ArrayList<A> cloneList_noSync(Iterable<A> l) {
    return l instanceof Collection ? cloneList_noSync((Collection) l) : asList(l);
  }

  static public <A> ArrayList<A> cloneList_noSync(Collection<A> l) {
    if (l == null)
      return new ArrayList();
    return new ArrayList<A>(l);
  }

  static public <A, B> IterableIterator<B> concurrentlyIterateValues(NavigableMap<A, B> map) {
    return concurrentlyIterateValues(map, map);
  }

  static public <A, B> IterableIterator<B> concurrentlyIterateValues(final NavigableMap<A, B> map, Object mutex) {
    return iteratorFromFunction(new F0<B>() {

      public Iterator<A> it = keys(map).iterator();

      public A key;

      public B get() {
        synchronized (mutex) {
          try {
            if (!it.hasNext())
              return null;
            return map.get(key = it.next());
          } catch (ConcurrentModificationException e) {
            print("Re-iterating");
            it = map.tailMap(key, false).keySet().iterator();
            if (!it.hasNext())
              return null;
            return map.get(key = it.next());
          }
        }
      }
    });
  }

  static public void cancelTimers(Collection timers) {
    for (Object timer : timers) cancelTimer(timer);
  }

  static public Object getOptMC(String field) {
    return getOpt(mc(), field);
  }

  static public <A> SecretValue<A> secretValueOrNull(A a) {
    return a == null ? null : new SecretValue(a);
  }

  static public <A> boolean syncEmpty(Collection<A> l) {
    if (l == null)
      return true;
    synchronized (l) {
      return l.isEmpty();
    }
  }

  static public String rtrim_fromLines(Collection lines) {
    StringBuilder buf = new StringBuilder();
    if (lines != null) {
      boolean first = true;
      for (Object line : lines) {
        if (first)
          first = false;
        else
          buf.append('\n');
        buf.append(str(line));
      }
    }
    return buf.toString();
  }

  static public String indentStructureString(String s) {
    if (s == null)
      return null;
    List<String> tok = javaTokForStructure(s);
    StringBuilder buf = new StringBuilder();
    int indent = 0;
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (isOpeningBracket(t)) {
        int j = i + 5;
        if (containsClosingBracket(subList(tok, i + 2, i + 5))) {
          buf.append(joinSubList(tok, i, j));
          i = j - 1;
        } else
          buf.append(t).append("\n").append(spaces(indent += 2));
      } else if (isClosingBracket(t))
        buf.append("\n").append(spaces(indent -= 2)).append(t);
      else if (eq(t, ",")) {
        buf.append(t).append("\n").append(spaces(indent));
        i++;
      } else
        buf.append(t);
    }
    return str(buf);
  }

  static public <A, B> void addPair(Collection<Pair<A, B>> c, A a, B b) {
    if (c != null)
      c.add(pair(a, b));
  }

  static public String dm_makeModule(String moduleLibID) {
    return (String) dm_callOS("makeModule", moduleLibID);
  }

  static public <A> VF1<A> ivf1ToVF1(IVF1<A> f) {
    return f == null ? null : new VF1<A>() {

      public void get(A a) {
        try {
          f.get(a);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "f.get(a)";
      }
    };
  }

  static public <A, B> VF2<A, B> ivf2ToVF2(IVF2<A, B> f) {
    return f == null ? null : new VF2<A, B>() {

      public void get(A a, B b) {
        try {
          f.get(a, b);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "f.get(a, b)";
      }
    };
  }

  static public java.lang.management.OperatingSystemMXBean osMXBean() {
    return ManagementFactory.getOperatingSystemMXBean();
  }

  static public double systemCPULoad() {
    return advancedOSMXBean().getSystemCpuLoad();
  }

  static public IConceptIndex simpleConceptIndex(final Runnable r) {
    return new IConceptIndex() {

      public void update(Concept c) {
        pcallF(r);
      }

      public void remove(Concept c) {
        pcallF(r);
      }
    };
  }

  static public void closeAllAndClear(Collection<? extends AutoCloseable> l) {
    if (l == null)
      return;
    for (AutoCloseable c : cloneList(l)) {
      try {
        close(c);
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
    l.clear();
  }

  static public <A> A singleObjectMethodProxy(Class<A> intrface, Object object, String methodName) {
    return proxyFromInvocationHandler(intrface, new InvocationHandler() {

      public Object invoke(Object proxy, Method method, Object[] args) {
        String mname = method.getName();
        if (mname.equals(methodName))
          return call(object, methodName, unnull(args));
        if (mname.equals("toString"))
          return "proxy for " + methodName;
        return null;
      }
    });
  }

  static public Map<String, String> paramsFromURL(String url) {
    return decodeHQuery(getQueryFromURL(url));
  }

  static public <A, B> boolean containsKey(Map<A, B> map, A key) {
    return map != null && map.containsKey(key);
  }

  static public String addAnchorToURL(String url, String anchor) {
    int i = smartIndexOf(url, '#');
    url = takeFirst(url, i);
    if (nempty(anchor))
      url += "#" + anchor;
    return url;
  }

  static public String urlWithoutQueryAndAnchor(String url) {
    return takeFirst(url, min(smartIndexOf(url, "?"), smartIndexOf(url, "#")));
  }

  static public String anchorFromURL(String url) {
    return substring(url, smartIndexOf(url, "#"));
  }

  static public boolean hasConceptWhereIC(Class<? extends Concept> c, Object... params) {
    return conceptWhereIC(c, params) != null;
  }

  static public boolean hasConceptWhereIC(Concepts cc, Class<? extends Concept> c, Object... params) {
    return conceptWhereIC(cc, c, params) != null;
  }

  static public boolean regexpFindsIC(String pat, String s) {
    return regexpIC(pat, s).find();
  }

  static public String hcss_responstable() {
    return hcss("\r\n    .responstable {\r\n      margin: 1em 0;\r\n      width: 100%;\r\n      overflow: visible;\r\n      background: #FFF;\r\n      color: #024457;\r\n      border-radius: 10px;\r\n      border: 1px solid #167F92;\r\n    }\r\n    \r\n    .responstable tr {\r\n      border: 1px solid #D9E4E6;\r\n    }\r\n    .responstable tr:nth-child(odd) {\r\n      background-color: #EAF3F3;\r\n    }\r\n    .responstable th {\r\n      display: none;\r\n      border: 1px solid #FFF;\r\n      background-color: #167F92;\r\n      color: #FFF;\r\n      padding: 1em;\r\n    }\r\n    .responstable th:first-child {\r\n      display: table-cell;\r\n      text-align: center;\r\n    }\r\n    .responstable th:nth-child(2) {\r\n      display: table-cell;\r\n    }\r\n    .responstable th:nth-child(2) span {\r\n      display: none;\r\n    }\r\n    .responstable th:nth-child(2):after {\r\n      content: attr(data-th);\r\n    }\r\n    @media (min-width: 480px) {\r\n      .responstable th:nth-child(2) span {\r\n        display: block;\r\n      }\r\n      .responstable th:nth-child(2):after {\r\n        display: none;\r\n      }\r\n    }\r\n    .responstable td {\r\n      display: block;\r\n      word-wrap: break-word;\r\n      max-width: 7em;\r\n    }\r\n    .responstable td:first-child {\r\n      display: table-cell;\r\n      text-align: center;\r\n      border-right: 1px solid #D9E4E6;\r\n    }\r\n    @media (min-width: 480px) {\r\n      .responstable td {\r\n        border: 1px solid #D9E4E6;\r\n      }\r\n    }\r\n    .responstable th, .responstable td {\r\n      text-align: left;\r\n      margin: .5em 1em;\r\n    }\r\n    @media (min-width: 480px) {\r\n      .responstable th, .responstable td {\r\n        display: table-cell;\r\n        padding: 1em;\r\n      }\r\n    }\r\n  ");
  }

  static public String tdTop(Object contents, Object... params) {
    return tag("td", contents, arrayPlus(params, "valign", "top"));
  }

  static public String hpasswordfield(String name, Object... params) {
    Object value = "";
    if (odd(l(params))) {
      value = params[0];
      params = dropFirst(params);
    }
    params = html_massageAutofocusParam(params);
    return tag("input", "", concatArrays(new Object[] { "type", "password", "name", name, "value", value }, params));
  }

  static public String hpasswordfield(String name) {
    return hpasswordfield(name, "");
  }

  static public Object subBot_serve404() {
    return call(getMainBot(), "serve404");
  }

  static public Object subBot_serve404(String msg) {
    return call(getMainBot(), "serve404", msg);
  }

  static public Object serveByteArray(byte[] data, String mimeType) {
    return subBot_serveByteArray(data, mimeType);
  }

  static public Object serveJSON_shallowLineBreaks(Object data) {
    return serveText(jsonEncode_shallowLineBreaks(data));
  }

  static public String dropLeadingSlash(String s) {
    return dropPrefix("/", s);
  }

  static public String pUnlessEmpty(String s, Object... __) {
    return empty(s) ? "" : p(s, __);
  }

  static public String unicode_newLineArrow() {
    return charToString(0x21b5);
  }

  static public <A> A highestByFunction(Iterable<A> l, Object f) {
    A best = null;
    Object bestValue = null;
    if (l != null)
      for (A a : l) {
        Object val = callF(f, a);
        if (best == null || cmp(val, bestValue) > 0) {
          best = a;
          bestValue = val;
        }
      }
    return best;
  }

  static public <A> A highestByFunction(Object f, Iterable<A> l) {
    return highestByFunction(l, f);
  }

  static public <A> A highestByFunction(IF1<A, ? extends Comparable> f, Iterable<A> l) {
    return highestByFunction(l, (Object) f);
  }

  static public <A> A highestByFunction(Iterable<A> l, IF1<A, ? extends Comparable> f) {
    return highestByFunction(f, l);
  }

  static public String hbuttonOnClick(String text, String onClick, Object... params) {
    return hfulltag("button", text, paramsPlus(params, "onClick", onClick));
  }

  static public String spanTitle(String title, Object contents) {
    return empty(title) ? str(contents) : span(contents, "title", title);
  }

  static public String regexpCaseInsensitivePrefix() {
    return "(?i)";
  }

  static public String jsDropTrailingComments(String s) {
    return javaTokDropTrailingN(s);
  }

  static public String divUnlessEmpty(String s, Object... params) {
    return empty(s) ? "" : div(s, params);
  }

  static public <A, B> Map<A, B> applyFunctionToMapValue(A key, Object f, Map<A, B> map) {
    if (map.containsKey(key))
      map.put(key, (B) callF(f, map.get(key)));
    return map;
  }

  static public Object cloneIfList(Object o) {
    return o instanceof List ? cloneList((List) o) : o;
  }

  static public MetaTransformer metaTransformer_transformableAndList() {
    return new MetaTransformer(new MetaTransformer.StructureHandler() {

      public Object transform(Object o, IF1 recurse) {
        if (o instanceof Transformable)
          return ((Transformable) o).transformUsing(recurse);
        if (o instanceof List)
          return map_ping(recurse, ((List) o));
        return null;
      }

      public void visit(Object o, IVF1 recurse) {
        if (o instanceof Visitable)
          ((Visitable) o).visitUsing(recurse);
        else if (o instanceof List)
          for (Object x : ((List) o)) {
            ping();
            recurse.get(x);
          }
      }
    });
  }

  static public <A> A printStructure(String prefix, A o) {
    if (endsWithLetter(prefix))
      prefix += ": ";
    print(prefix + structureForUser(o));
    return o;
  }

  static public <A> A printStructure(A o) {
    print(structureForUser(o));
    return o;
  }

  static public void logQuoted(String logFile, String line) {
    logQuoted(getProgramFile(logFile), line);
  }

  static public void logQuoted(File logFile, String line) {
    appendToFile(logFile, quote(line) + "\n");
  }

  static public <A> List<A> dropFirstTwoAndLastTwo(List<A> l) {
    return dropFirstAndLast(2, l);
  }

  static public String hjavascript_src(String src) {
    return tag("script", "", "src", src);
  }

  static public String[] flattenStringArray2(Object... a) {
    List l = new ArrayList();
    if (a != null)
      for (Object x : a) if (x instanceof String[])
        l.addAll(asList(((String[]) x)));
      else if (x instanceof Collection)
        l.addAll(((Collection) x));
      else
        l.add(x);
    return asStringArray(l);
  }

  static public Map mapKeyAndFunction(Iterable l, Object f) {
    return mapKeyAndFunction(f, l);
  }

  static public Map mapKeyAndFunction(Object f, Iterable l) {
    HashMap map = new HashMap();
    if (l != null)
      for (Object o : l) map.put(o, callF(f, o));
    return map;
  }

  static public <A, B, C> Map<A, C> mapKeyAndFunction(Map<A, B> map, IF2<A, B, C> f) {
    HashMap map2 = new HashMap();
    if (map != null)
      for (Map.Entry<? extends A, ? extends B> __0 : _entrySet(map)) {
        A key = __0.getKey();
        B value = __0.getValue();
        map2.put(key, callF(f, key, value));
      }
    return map2;
  }

  static public <A, B> Map<A, B> mapKeyAndFunction(Iterable<A> l, IF1<A, B> f) {
    return mapKeyAndFunction(f, l);
  }

  static public File prepareProgramFile(String name) {
    return mkdirsForFile(getProgramFile(name));
  }

  static public File prepareProgramFile(String progID, String name) {
    return mkdirsForFile(getProgramFile(progID, name));
  }

  static public Matcher regexpIC(Pattern pat, String s) {
    return pat.matcher(unnull(s));
  }

  static public Matcher regexpIC(String pat, String s) {
    return compileRegexpIC(pat).matcher(unnull(s));
  }

  static public Pattern regexpIC(String pat) {
    return compileRegexpIC(pat);
  }

  static public Object safeUnstructureAllowingClasses(String s, Class... allowedClasses) {
    final Set<String> allowedClassesSet = mapToSet(__108 -> className(__108), allowedClasses);
    Object classFinder = new F1<String, Object>() {

      public Object get(String name) {
        try {
          if (!allowedClassesSet.contains(name))
            throw fail("Class not allowed to unstructure: " + name);
          return classForName(name);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "if (!allowedClassesSet.contains(name)) fail(\"Class not allowed to unstructure...";
      }
    };
    return unstructure(s, false, classFinder);
  }

  static public List<String> sortedAlphaNum(Collection<String> c) {
    return sorted(c, new AlphanumComparator());
  }

  static public Object dm_getModule(Object moduleOrID) {
    if (moduleOrID == null || eq(moduleOrID, ""))
      return null;
    if (isString(moduleOrID) && isIdentifier(((String) moduleOrID)))
      return dm_getService(((String) moduleOrID));
    if (isStringOrIntOrLong(moduleOrID))
      return dm_callOS("getDynModuleByID", str(moduleOrID));
    return dm_resolveModule(moduleOrID);
  }

  static public AutoCloseable dm_enter(Object mod) {
    return (AutoCloseable) callOpt(dm_getModule(mod), "enter");
  }

  static public String formatDoubleFull(double d, int digits) {
    String format = digits <= 0 ? "0" : "0." + rep(digits, '0');
    return new java.text.DecimalFormat(format, new java.text.DecimalFormatSymbols(Locale.ENGLISH)).format(d);
  }

  static public long toM(long l) {
    return (l + 1024 * 1024 - 1) / (1024 * 1024);
  }

  static public String toM(long l, int digits) {
    return formatDouble(toM_double(l), digits);
  }

  static public boolean fileNotEmpty(File f) {
    return isFile(f) && fileSize(f) > 0;
  }

  static public List<String> splitAtAmpersand(String s) {
    return s == null ? emptyList() : asList(s.split("&"));
  }

  static public Map<String, String> parseColonProperties(String text) {
    return parseColonProperties(text, new LinkedHashMap());
  }

  static public Map<String, String> parseColonProperties(String text, Map<String, String> map) {
    for (String s : tlft(text)) {
      int i = indexOf(s, ':');
      if (i > 0)
        map.put(trimSubstring(s, 0, i), trimSubstring(s, i + 1));
    }
    return map;
  }

  static public String gazelle_server() {
    return "https://gazelle.rocks/";
  }

  static public String postPage(String url, Object... params) {
    return doPost(litmap(params), url);
  }

  static public String stringIfTrue(boolean b, String s) {
    return b ? s : "";
  }

  static public float abs(float f) {
    return Math.abs(f);
  }

  static public int abs(int i) {
    return Math.abs(i);
  }

  static public double abs(double d) {
    return Math.abs(d);
  }

  static public int latestInstalledJavaX() {
    File[] files = new File(userHome(), ".javax").listFiles();
    int v = 0;
    if (files != null)
      for (File f : files) {
        Matcher m = regexpMatcher("x(\\d\\d\\d?)\\.jar", f.getName());
        if (m.matches())
          v = Math.max(v, Integer.parseInt(m.group(1)));
      }
    return v;
  }

  static public String x30JarServerURL() {
    return "http://botcompany.de:8081/x30.jar";
  }

  static public <A, B> boolean eitherIsA(Either<A, B> e) {
    return e != null && e.isA();
  }

  static public HashSet<String> allClasses_keywords = lithashset("class", "interface", "enum", "sclass", "sinterface", "record", "srecord", "strecord", "asclass", "concept");

  static public List<List<String>> allClasses(List<String> tok) {
    List<List<String>> l = new ArrayList();
    int n = tok.size();
    HashSet<String> _allClasses_keywords = allClasses_keywords;
    for (int i = 1; i < n; i += 2) {
      String t = tok.get(i);
      if ("{".equals(t))
        i = findEndOfBlock(tok, i) - 1;
      else if (_allClasses_keywords.contains(t) && (tok_isJavaxMetaCommandLeftOf(tok, i) || !eqGetOneOf(tok, i - 2, ".", "include"))) {
        int j = i;
        while (j < n && !tok.get(j).equals("{")) j += 2;
        j = findEndOfBlock(tok, j) + 1;
        i = leftScanModifiers(tok, i);
        l.add(tok.subList(i - 1, Math.min(n, j)));
        i = j - 2;
      }
    }
    return l;
  }

  static public List<List<String>> allClasses(String text) {
    return allClasses(javaTok(text));
  }

  static public String getClassDeclarationName(List<String> tok) {
    if (tok != null)
      for (int i = 1; i + 2 < tok.size(); i += 2) if (allClasses_keywords.contains(tok.get(i)) && isIdentifier(tok.get(i + 2))) {
        if (eqGet(tok, i + 2, "noeq"))
          i += 2;
        return tok.get(i + 2);
      }
    return null;
  }

  static public List<String> findBlock(String pat, List<String> tok) {
    List<String> tokpat = javaTok(pat);
    int i = findCodeTokens(tok, toStringArray(codeTokensOnly(tokpat)));
    if (i < 0)
      return null;
    int bracketIdx = i + tokpat.size() - 3;
    assertEquals("{", tok.get(bracketIdx));
    int endIdx = findEndOfBlock(tok, bracketIdx);
    return subList(tok, i - 1, endIdx + 1);
  }

  static public String dummyMainClassName(String progID) {
    return "m" + psI(progID);
  }

  static public File tempDir() {
    return makeTempDir();
  }

  static public String tok_packageName(List<String> tok) {
    int i = jfind(tok, "package");
    if (i < 0)
      return "";
    i += 2;
    int j = jfind(tok, i, ";");
    if (j < 0)
      return "";
    return join(codeTokensOnly(subList(tok, i - 1, j)));
  }

  static public String tok_firstClassName(List<String> tok) {
    int i = jfind(tok, "class <id>");
    return i < 0 ? null : tok.get(i + 2);
  }

  static public File tempDirPossiblyInRAMDisk() {
    File f = linux_fileInRamDisk(aGlobalID());
    if (f != null) {
      f.mkdirs();
      return f;
    }
    return makeTempDir();
  }

  static public boolean loadLibraryOrSrcLib_srcLibsEnabled = true;

  static public ThreadLocal<Map<Long, File>> loadLibraryOrSrcLib_tempCache = new ThreadLocal();

  static public File loadLibraryOrSrcLib(String snippetID) {
    try {
      vmBus_send("loadLibraryOrSrcLib", snippetID);
      long id = parseSnippetID(snippetID);
      if (loadLibraryOrSrcLib_tempCache.get() != null) {
        File f = loadLibraryOrSrcLib_tempCache.get().get(id);
        if (f != null)
          return f;
      }
      boolean srcLib = loadLibraryOrSrcLib_srcLibsEnabled && isMarkedAsSrcLib(snippetID);
      if (srcLib) {
        File f = pairA(hotwire_compile(snippetID));
        mapPut(loadLibraryOrSrcLib_tempCache.get(), id, f);
        return f;
      }
      File f = DiskSnippetCache_getLibrary(id);
      if (fileSize(f) != 0)
        return f;
      try {
        return loadDataSnippetToFile(snippetID);
      } catch (Throwable e) {
        if (loadLibraryOrSrcLib_srcLibsEnabled && nempty(loadSnippet(snippetID))) {
          markAsSrcLib(snippetID);
          return pairA(hotwire_compile(snippetID));
        }
        throw rethrow(e);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String cleanJavaCompilerOutput(String s) {
    return dropPrefixTrim("Annotation processing got disabled, since it requires a 1.6 compliant JVM", s);
  }

  static public String appendWithNewLine(String a, String b) {
    if (empty(b))
      return a;
    if (empty(a))
      return b;
    return addSuffix(a, "\n") + b;
  }

  static public boolean anyFileWithExtensionInDir(File dir, String ext) {
    return nempty(filesWithExtension(ext, findAllFiles_noDirs(dir)));
  }

  static public String nChars(long n) {
    return n2(n, "char");
  }

  static public String nChars(String s) {
    return nChars(l(s));
  }

  static public boolean dir2zip_recurse_verbose = false;

  static public int dir2zip_recurse(File inDir, File zip) {
    return dir2zip_recurse(inDir, zip, "");
  }

  static public int dir2zip_recurse(File inDir, File zip, String outPrefix) {
    try {
      mkdirsForFile(zip);
      FileOutputStream fout = newFileOutputStream(zip);
      ZipOutputStream outZip = new ZipOutputStream(fout);
      try {
        return dir2zip_recurse(inDir, outZip, outPrefix, 0);
      } finally {
        outZip.close();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int dir2zip_recurse(File inDir, ZipOutputStream outZip) {
    return dir2zip_recurse(inDir, outZip, "", 0);
  }

  static public int dir2zip_recurse(File inDir, ZipOutputStream outZip, String outPrefix, int level) {
    try {
      if (++level >= 20)
        throw fail("woot? 20 levels in zip?");
      List<File> files = new ArrayList();
      for (File f : listFiles(inDir)) files.add(f);
      int n = 0;
      sortFilesByName(files);
      for (File f : files) {
        if (f.isDirectory()) {
          print("dir2zip_recurse: Scanning " + f.getAbsolutePath());
          n += dir2zip_recurse(f, outZip, outPrefix + f.getName() + "/", level);
        } else {
          if (dir2zip_recurse_verbose)
            print("Copying " + f.getName());
          outZip.putNextEntry(new ZipEntry(outPrefix + f.getName()));
          InputStream fin = new FileInputStream(f);
          copyStream(fin, outZip);
          fin.close();
          ++n;
        }
      }
      return n;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isInRAMDisk(File f) {
    return startsWithOneOf(f2s(f), "/dev/shm/", "/run/shm/");
  }

  static public void deleteDirectory(File dir) {
    deleteDirectory(dir, false, false);
  }

  static public void deleteDirectory(File dir, boolean verbose, boolean testRun) {
    deleteAllFilesInDirectory(dir, verbose, testRun);
    if (verbose)
      print((testRun ? "Would delete " : "Deleting ") + dir.getAbsolutePath());
    if (!testRun)
      dir.delete();
  }

  static public void closeRandomAccessFile(RandomAccessFile f) {
    if (f != null)
      try {
        f.close();
        callJavaX("dropIO", f);
      } catch (Throwable e) {
        printStackTrace(e);
      }
  }

  static public RandomAccessFile newRandomAccessFile(File path, String mode) {
    try {
      boolean forWrite = mode.indexOf('w') >= 0;
      if (forWrite)
        mkdirsForFile(path);
      RandomAccessFile f = new RandomAccessFile(path, mode);
      callJavaX("registerIO", f, path, forWrite);
      return f;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void failIfOddCount(Object... list) {
    if (odd(l(list)))
      throw fail("Odd list size: " + list);
  }

  static public Object[] asObjectArray(Collection l) {
    return toObjectArray(l);
  }

  static public AccessControlContext vm_globalACC() {
    return (AccessControlContext) vm_generalMap_get("Global ACC");
  }

  static public void replaceACCInClassLoader(Object o, AccessControlContext newACC) {
    ClassLoader cl = getClassLoaderOrSame(o);
    if (cl instanceof URLClassLoader) {
      try {
        setOpt(cl, "acc", newACC);
        try {
          setOpt((Object) getOpt(cl, "ucp"), "acc", newACC);
        } catch (Throwable e) {
          printShortException("replaceACCInClassLoader: ", e);
          if (java10OrHigher())
            if (addDefaultVMOption("--add-opens java.base/jdk.internal.loader=ALL-UNNAMED"))
              print("Please restart the OS");
        }
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public String intToHex(int i) {
    return bytesToHex(intToBytes(i));
  }

  static public int identityHashCode(Object o) {
    return System.identityHashCode(o);
  }

  static public <A> void addToStringTree(StringTree2<A> tree, List<String> tokC, A leafValue) {
    if (leafValue == null)
      return;
    if (empty(tokC)) {
      tree.leafValue = leafValue;
      return;
    }
    String s = first(tokC);
    StringTree2 t = tree.getOrAdd(s);
    addToStringTree(t, dropFirst(tokC), leafValue);
  }

  static public String applyTranspilationFunction(IVF1<List<String>> f, String s) {
    if (f == null)
      return s;
    List<String> tok = javaTok(s);
    f.get(tok);
    return join(tok);
  }

  static public String jreplace_dyn(String s, String in, Object out) {
    return jreplace_dyn(s, in, out, null);
  }

  static public String jreplace_dyn(String s, String in, Object out, Object condition) {
    List<String> tok = javaTok(s);
    jreplace_dyn(tok, in, out, condition);
    return join(tok);
  }

  static public boolean jreplace_dyn(List<String> tok, String in, Object out) {
    return jreplace_dyn(tok, in, out, false, true, null);
  }

  static public boolean jreplace_dyn(List<String> tok, String in, IF2<List<String>, Integer, String> out) {
    return jreplace_dyn(tok, in, (Object) out);
  }

  static public boolean jreplace_dyn(List<String> tok, String in, IF2<List<String>, Integer, String> out, IF2<List<String>, Integer, Boolean> condition) {
    return jreplace_dyn(tok, in, (Object) out, (Object) condition);
  }

  static public boolean jreplace_dyn(List<String> tok, String in, Object out, Object condition) {
    return jreplace_dyn(tok, in, out, false, true, condition);
  }

  static public boolean jreplace_dyn(List<String> tok, String in, Object out, boolean ignoreCase, boolean reTok, Object condition) {
    List<String> tokin = javaTok(in);
    jfind_preprocess(tokin);
    String[] toks = toStringArray(codeTokensOnly(tokin));
    boolean anyChange = false;
    for (int n = 0; n < 10000; n++) {
      int i = findCodeTokens(tok, 1, ignoreCase, toks, condition);
      if (i < 0)
        return anyChange;
      String expansion = (String) (callF(out, tok, i));
      int end = i + l(tokin) - 2;
      clearAllTokens(tok, i, end);
      tok.set(i, expansion);
      if (reTok)
        reTok(tok, i, end);
      anyChange = true;
    }
    throw fail("woot? 10000! " + quote(in) + " => " + quote(out));
  }

  static public List<String> splitAtJavaToken(String s, String splitToken) {
    return splitByJavaToken(s, splitToken);
  }

  static public void tok_transpileIfQuoted_dollarVars(List<String> tok) {
    jreplace_dyn(tok, "if <quoted>", new F2<List<String>, Integer, String>() {

      public String get(List<String> tok, Integer cIdx) {
        try {
          String pat = unquote(tok.get(cIdx + 2));
          List<String> vars = new ArrayList();
          String pat2 = dollarVarsToStars(pat, vars);
          int iCurly = cIdx + 4;
          tok_statementToBlock(tok, iCurly);
          tokAppend_reTok(tok, iCurly, joinWithSpace(mapWithIndexStartingAt1(vars, (i, var) -> ("S " + var + " = $" + i + ";"))));
          return ("if (match(" + (quote(pat2)) + ", s, m))");
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "S pat = unquote(tok.get(cIdx+2));\r\n    new LS vars;\r\n    S pat2 = dollarVarsT...";
      }
    }, new TokCondition() {

      public boolean get(final List<String> tok, final int i) {
        return containsDollarVars(unquote(tok.get(i + 3)));
      }
    });
  }

  static public boolean startsAndEndsWith(String a, char c) {
    return startsWith(a, c) && endsWith(a, c) && l(a) >= 2;
  }

  static public boolean startsAndEndsWith(String a, String b) {
    return startsWith(a, b) && endsWith(a, b) && l(a) >= l(b) * 2;
  }

  public static List<String> parseSnippetIDs(Collection<String> snippetIDs) {
    List<String> l = new ArrayList();
    for (String id : snippetIDs) l.add(str(parseSnippetID(id)));
    return l;
  }

  static public <A> Map<A, String> trimValues(Map<A, String> map) {
    Map map2 = similarEmptyMap(map);
    for (A key : keys(map)) map2.put(key, trim(map.get(key)));
    return map2;
  }

  static public Map transformKeys(Map map, Object f) {
    HashMap m = new HashMap();
    for (Object key : keys(map)) m.put(callF(f, key), map.get(key));
    return m;
  }

  static public Map<String, String> standardCredentialsMap() {
    String user = standardCredentialsUser();
    String pass = standardCredentialsPass();
    if (nempty(user) && nempty(pass))
      return litmap("_user", user, "_pass", pass);
    return litmap();
  }

  static public String regexp_findSnippetIDs() {
    return "(?:#|\\blib\\s+|(?:^|\\n)\\s*!)([0-9]+)";
  }

  static public String snippetLink(String id) {
    return empty(id) ? id : "https://code.botcompany.de/" + parseSnippetID(id);
  }

  static public SnippetTitles getSnippetTitle_cached_cache = new SnippetTitles();

  static public String getSnippetTitle_cached(String id) {
    return getSnippetTitle_cached_cache.get(id);
  }

  static public void getSnippetTitle_cached_put(String id, String title) {
    getSnippetTitle_cached_cache.put(id, title);
  }

  static public boolean getSnippetTitle_cached_has(String id) {
    return getSnippetTitle_cached_cache.has(id);
  }

  static public String getSnippetTitle_cached_probe(String id) {
    return getSnippetTitle_cached_cache.probe(id);
  }

  static public void mreplace(Matcher m, StringBuffer buf, String s) {
    m.appendReplacement(buf, Matcher.quoteReplacement(s));
  }

  static public List<String> tlft_j(String text) {
    return toLinesFullTrim_java(text);
  }

  static public Object dm_callModule(Object moduleOrID, String method, Object... args) {
    Object mod = dm_getModule(moduleOrID);
    if (mod == null)
      return null;
    AutoCloseable __1 = dm_enter(mod);
    try {
      return call(mod, method, args);
    } finally {
      _close(__1);
    }
  }

  static public boolean dm_isFirstSiblingModule(Object mod) {
    String libID = dm_moduleLibID(mod);
    if (libID == null)
      return false;
    List<String> siblings = dm_modulesWithLibID(libID);
    return eq(dm_moduleID(mod), lowestByAlphaNum(siblings));
  }

  static public void ensureConceptClassIsIndexed(Class<? extends Concept> c) {
    if (c != null && !isConceptClassIndexed(c))
      indexRandomConceptField(c);
  }

  static public <A extends JComponent> A toolTip(A c, final Object toolTip) {
    return setToolTipText(c, toolTip);
  }

  static public <A extends JComponent> A toolTip(Object toolTip, A c) {
    return setToolTipText(toolTip, c);
  }

  static public JButton jPopDownButton(String text, final Object... menuParams) {
    return jbutton((empty(text) ? "" : text + " ") + unicode_downPointingTriangle(), new Runnable() {

      public void run() {
        try {
          JPopupMenu menu = new JPopupMenu();
          int emptyCount = menu.getComponentCount();
          String position = (String) (optPar_ignoreOddLength("position", menuParams));
          fillJPopupMenu(menu, paramsWithout(menuParams, "position"));
          if (menu.getComponentCount() != emptyCount) {
            JButton btn = heldInstance(JButton.class);
            int x = 0;
            if (eq(position, "center"))
              x = (btn.getWidth() - getPreferredWidth(menu)) / 2;
            else if (eq(position, "right"))
              x = btn.getWidth() - getPreferredWidth(menu);
            menu.show(btn, x, btn.getHeight());
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "new JPopupMenu menu;\r\n    int emptyCount = menu.getComponentCount();\r\n    Str...";
      }
    });
  }

  static public void print_setPrefixForThread(final String prefix) {
    interceptPrintInThisThread(empty(prefix) ? null : new _PrintIndent(prefix));
  }

  static public Object callMainBot(String method, Object... args) {
    return call(mainBot(), method, args);
  }

  static public Object subBot_serveInputStream(InputStream in, String mimeType) {
    return call(mainBot(), "serveInputStream", in, mimeType);
  }

  static public int bufferedInputStream_bufferSize = 65536;

  static public BufferedInputStream bufferedInputStream(int bufSize, File f) {
    try {
      return bufferedInputStream(bufSize, newFileInputStream(f));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public BufferedInputStream bufferedInputStream(File f) {
    try {
      return bufferedInputStream(newFileInputStream(f));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public BufferedInputStream bufferedInputStream(InputStream in) {
    return new BufferedInputStream(in, bufferedInputStream_bufferSize);
  }

  static public BufferedInputStream bufferedInputStream(int bufSize, InputStream in) {
    return new BufferedInputStream(in, bufSize);
  }

  static public String addPrefix(String prefix, String s) {
    return s.startsWith(prefix) ? s : prefix + s;
  }

  static public String webChatBotLogsHTML() {
    return withDBLock(new F0<String>() {

      public String get() {
        try {
          List<String> l = new ArrayList();
          for (Conversation conv : sortByCalculatedFieldDesc(list(Conversation.class), new F1<Conversation, Object>() {

            public Object get(Conversation c) {
              try {
                return empty(c.msgs) ? c.created : last(c.msgs).time;
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "empty(c.msgs) ? c.created : last(c.msgs).time";
            }
          })) {
            List<List<Msg>> dialogs = reversed(unnull(conv.oldDialogs));
            l.add(webChatBotLogsHTML_formatDialog(str(conv.id + "/" + (l(dialogs) + 1)), conv.msgs));
            int i = l(dialogs);
            for (List<Msg> msgs : dialogs) l.add(webChatBotLogsHTML_formatDialog(conv.id + "/" + (i--), msgs));
          }
          return h3_htitle("Chat Logs") + ul(l, null, "style", "margin-top: 1em");
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "new L<S> l;\r\n    for (Conversation conv : sortByCalculatedFieldDesc(list Conv...";
      }
    });
  }

  static public String webChatBotLogsHTML_formatDialog(String id, List<Msg> msgs) {
    long startTime = collectMinLong(msgs, "time");
    long endTime = collectMaxLong(msgs, "time");
    List<String> lc = new ArrayList();
    for (Msg m : msgs) if (m.fromUser)
      lc.add("U: " + i(htmlencode(m.text)));
    else
      lc.add("B: " + htmlencode(m.text));
    String time1 = formatDateAndTime(startTime);
    String time2 = formatDateAndTime(endTime);
    time2 = shortenEndTime(time2, time1);
    return id + " [" + htmlencode(time1) + " - " + htmlencode(time2) + "]" + ul(lc);
  }

  static public int parseIntOpt(String s) {
    return isInteger(s) ? parseInt(s) : 0;
  }

  static public String h3_htitle(String s) {
    return htitle(s) + h3(s);
  }

  static public String pageNav2(String baseLink, int count, int value, int step, String nVar, Object... __) {
    List<String> l = new ArrayList();
    baseLink = unnull(baseLink) + (contains(baseLink, "?") ? "&" : "?") + urlencode(nVar) + "=";
    if (value > 0)
      l.add(ahref(baseLink + max(0, value - step), stringPar("leftArrow", __, htmlencode(unicode_leftPointingTriangle()))));
    for (int i = 0; i < count; i += step) {
      int n = i / step + 1;
      if (pageNav2_showPage(value, i, step, count))
        if (value == i)
          l.add(b(n));
        else
          l.add(ahref(baseLink + i, n));
    }
    if (value + step < count)
      l.add(ahref(baseLink + (value + step), stringPar("rightArrow", __, htmlencode(unicode_rightPointingTriangle()))));
    return p("Pages: " + lines(l));
  }

  static public boolean pageNav2_showPage(int actual, int i, int step, int count) {
    int diff = abs(actual - i) / step;
    return i == 0 || i >= (count - 1) / step * step || diff <= 10 || diff < 100 && ((i / step) % 10) == 9 || ((i / step) % 100) == 99;
  }

  static public String renderFileInfo(File f) {
    return f == null ? "-" : f2s(f) + " " + (f.isFile() ? "(file, " + n2(fileSize(f)) + " bytes)" : f.isDirectory() ? "(dir)" : "(not found)");
  }

  static public File fileInSameDir(File f, String newName) {
    return newFile(parentFile(f), newName);
  }

  static public String ymd_minus_hms() {
    return ymd() + "-" + hms();
  }

  static public List<Integer> rgbToIntList(RGB rgb) {
    return rgb == null ? null : ll(rgb.redInt(), rgb.greenInt(), rgb.blueInt());
  }

  static public ExpiringMap2<String, String> loadSnippet_simpleCache_map = new ExpiringMap2(10000);

  static public Lock loadSnippet_simpleCache_lock = lock();

  static public int loadSnippet_simpleCache_timeout = 60000;

  static public String loadSnippet_simpleCache(String id) {
    if (id == null)
      return null;
    Lock __0 = loadSnippet_simpleCache_lock;
    lock(__0);
    try {
      id = fsI(id);
      String src = loadSnippet_simpleCache_map.get(id);
      if (src != null)
        return src;
      Integer oldTimeout = setThreadLocal(loadPage_forcedTimeout_byThread, loadSnippet_simpleCache_timeout);
      try {
        src = loadSnippet(id);
        if (src != null)
          loadSnippet_simpleCache_map.put(id, src);
        return src;
      } finally {
        loadPage_forcedTimeout_byThread.set(oldTimeout);
      }
    } finally {
      unlock(__0);
    }
  }

  static public String hreplacetag(String html, String tag, String newTag) {
    List<String> tok = htmlcoarsetok(html);
    List<List<String>> tags = findContainerTag(tok, tag);
    if (empty(tags))
      return html;
    List<String> theTag = first(tags);
    List<String> actualTag = subList(theTag, 1, l(theTag) - 1);
    return join(replaceSubList(cloneList(tok), actualTag, litlist(newTag)));
  }

  static public Object subBot_serveWithContentType(String text, String contentType) {
    return callMainBot("serveByteArray", toUtf8(text), contentType);
  }

  static public String fileExtension(File f) {
    if (f == null)
      return null;
    return fileExtension(f.getName());
  }

  static public String fileExtension(String s) {
    return substring(s, smartLastIndexOf(s, '.'));
  }

  static public String ymd() {
    return ymd(now());
  }

  static public String ymd(long now) {
    return year(now) + formatInt(month(now), 2) + formatInt(dayOfMonth(now), 2);
  }

  static public String ymd(long now, TimeZone tz) {
    return year(now, tz) + formatInt(month(now, tz), 2) + formatInt(dayOfMonth(now, tz), 2);
  }

  static public String hhmm() {
    return hhmm(now());
  }

  static public String hhmm(long time) {
    return new SimpleDateFormat("HHmm").format(time);
  }

  static public List<Map> rawEmojisList() {
    return (List) jsonDecodeMap(loadTextFile(loadLibrary("#1400427"))).get("emojis");
  }

  static public Object[] paramsPlus_inFront(Object[] a1, Object... a2) {
    return paramsPlus(a2, a1);
  }

  static public String htd(Object contents, Object... params) {
    return htag("td", contents, params);
  }

  static public String str_toK(long l) {
    return n2(toK(l)) + " K";
  }

  static public String conceptsFileName() {
    return "concepts.structure.gz";
  }

  static public int howManySecondsAgo(long timestamp) {
    return iround(toSeconds(now() - timestamp));
  }

  static public List<String> listZip(File inZip) {
    return listZipFile(inZip);
  }

  static public String addSlash(String s) {
    return empty(s) || s.endsWith("/") ? s : s + "/";
  }

  static public boolean isFile(File f) {
    return f != null && f.isFile();
  }

  static public boolean isFile(String path) {
    return isFile(newFile(path));
  }

  static public String nlToBr_withIndents(String s) {
    s = nlToBr(s);
    StringBuilder buf = new StringBuilder();
    int i = 0;
    while (i < l(s)) {
      while (charAt(s, i) == ' ') {
        ++i;
        buf.append("&nbsp;");
      }
      int j = smartIndexOf(s, i, '\n') + 1;
      buf.append(substring(s, i, j));
      i = j;
    }
    return str(buf);
  }

  static public <A> void addFirst(List<A> c, A a) {
    if (c != null)
      c.add(0, a);
  }

  static public String hinput(Object contents, Object... params) {
    return htag("input", contents, params);
  }

  static public Object[] paramsPlus_noOverwrite(Object[] a1, Object... a2) {
    if (a2 == null)
      return a1;
    if (a1 == null)
      return a2;
    if (l(a1) == 1 && a1[0] instanceof Map)
      return new Object[] { mapPlus((Map) a1[0], a2) };
    assertEvenLength(a1);
    assertEvenLength(a2);
    Map map = paramsToOrderedMap(a1);
    int n = l(a2);
    for (int i = 0; i < n; i += 2) mapPut_noOverwrite(map, a2[i], a2[i + 1]);
    return mapToParams(map);
  }

  static public Set similarEmptySet(Iterable m) {
    if (m instanceof TreeSet)
      return new TreeSet(((TreeSet) m).comparator());
    if (m instanceof LinkedHashSet)
      return new LinkedHashSet();
    return new HashSet();
  }

  static public Set similarEmptySet(Map m) {
    if (m instanceof TreeMap)
      return new TreeSet(((TreeMap) m).comparator());
    if (m instanceof LinkedHashMap)
      return new LinkedHashSet();
    return new HashSet();
  }

  static public <A> A replaceIfEqual(A a, A b, A c) {
    return eq(a, b) ? c : a;
  }

  static public String localDateWithMinutes(long time) {
    SimpleDateFormat format = simpleDateFormat_local("yyyy/MM/dd HH:mm");
    return format.format(time);
  }

  static public String localDateWithMinutes() {
    return localDateWithMinutes(now());
  }

  static public <A> String pnlToStringWithEmptyLines(Iterable<A> l) {
    return pnlToString(map(l, o -> o + "\n"));
  }

  static public void saveBinaryFileVerbose(File f, byte[] data) {
    boolean exists = f.exists();
    saveBinaryFile(f, data);
    print((!exists ? "Created" : "Updated") + " file " + f2s(f) + " (" + f.length() + " bytes)");
  }

  static public File getSecretProgramDir() {
    return getSecretProgramDir(actualProgramID());
  }

  static public File getSecretProgramDir(String snippetID) {
    if (empty(snippetID))
      return javaxSecretDir();
    return newFile(javaxSecretDir(), formatSnippetID(snippetID));
  }

  static public String windowsLineBreaks(String s) {
    return s == null ? null : s.replaceAll("(?<!\r)\n", "\r\n");
  }

  static public String mapToLines_rtrim(Object f, Map map) {
    return lines_rtrim(map(map, f));
  }

  static public String mapToLines_rtrim(Object f, Iterable l) {
    return lines_rtrim(map(f, l));
  }

  static public <A> String mapToLines_rtrim(Iterable<A> l, IF1<A, String> f) {
    return mapToLines_rtrim(f, l);
  }

  static public String newLinesToSpaces(String s) {
    return s == null ? null : fixNewLines(s).replace("\n", " ");
  }

  static public MultiMap treeMultiMapIndexByField(Collection c, String field) {
    MultiMap map = treeMultiMap();
    for (Object a : c) {
      Object val = getOpt(a, field);
      if (val != null)
        map.put(val, a);
    }
    return map;
  }

  static public MultiMap treeMultiMapIndexByField(String field, Collection c) {
    return treeMultiMapIndexByField(c, field);
  }

  static public Cache<List<CountryDialCode>> countryDialCodes_cache = new Cache<>(() -> countryDialCodes_load());

  static public List<CountryDialCode> countryDialCodes() {
    return countryDialCodes_cache.get();
  }

  static public List<CountryDialCode> countryDialCodes_load() {
    return sortedByField("dialCode", filter(c -> nempty(c.dialCode), map((List<Map<String, String>>) loadJSONFile(loadLibrary("#1400429")), m -> new CountryDialCode(m.get("name"), m.get("code"), m.get("dial_code")))));
  }

  static public List<String> nempties(Collection<String> c) {
    return filterNempty(c);
  }

  static public List<String> splitAtComma(String s) {
    return empty(s) ? emptyList() : asList(s.split(","));
  }

  static public CountryDialCode countryDialCodeByCountryCode(String countryCode) {
    return objectWhere(countryDialCodes(), "countryCode", upper(countryCode));
  }

  static public String dropPrefixTrim(String prefix, String s) {
    return trim(dropPrefix(prefix, s));
  }

  static public String localDateWithSeconds(long time) {
    SimpleDateFormat format = simpleDateFormat_local("yyyy/MM/dd HH:mm:ss");
    return format.format(time);
  }

  static public String localDateWithSeconds() {
    return localDateWithSeconds(now());
  }

  static public String smallestTransparentGIFDataURI() {
    return "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  }

  static public <A> List<A> sortedByFieldDesc(Collection<A> c, String field) {
    List<A> l = new ArrayList(c);
    sort(l, descFieldComparator(field));
    return l;
  }

  static public <A> List<A> sortedByFieldDesc(String field, Collection<A> c) {
    return sortedByFieldDesc(c, field);
  }

  static public <A> A lowestByField(Iterable<A> l, String field) {
    A lowest = null;
    Object lowestValue = null;
    for (A a : unnull(l)) {
      Object val = getOpt(a, field);
      if (lowest == null || cmp(val, lowestValue) < 0) {
        lowest = a;
        lowestValue = val;
      }
    }
    return lowest;
  }

  static public <A> A lowestByField(String field, Iterable<A> l) {
    return lowestByField(l, field);
  }

  static public java.util.Timer doLater(long delay, final Object r) {
    ping();
    final java.util.Timer timer = new java.util.Timer();
    timer.schedule(timerTask(r, timer), delay);
    return vmBus_timerStarted(timer);
  }

  static public java.util.Timer doLater(double delaySeconds, final Object r) {
    return doLater(toMS(delaySeconds), r);
  }

  volatile static public boolean conceptsAndBot_running = false;

  static public boolean conceptsAndBot_thinOnStart = true;

  static public void conceptsAndBot() {
    conceptsAndBot(null);
  }

  static public void conceptsAndBot(Integer autoSaveInterval) {
    if (conceptsAndBot_running)
      return;
    conceptsAndBot_running = true;
    Concepts cc = db_mainConcepts();
    try {
      if (cc.useFileLock) {
        if (!cc.fileLock().tryToLock()) {
          ensureDBNotRunning(dbBotStandardName());
          cc.fileLock().forceLock();
        }
      } else
        ensureDBNotRunning(dbBotStandardName());
    } catch (Throwable _e) {
      cc.dontSave = true;
      throw rethrow(_e);
    }
    cc.persist(autoSaveInterval);
    dbBot(false);
    if (conceptsAndBot_thinOnStart) {
      try {
        thinAProgramsBackups(getDBProgramID(), true);
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public List mapNonCodeTokens(Object f, List l) {
    List out = emptyList(l);
    for (int i = 0; i < l(l); i++) {
      Object o = l.get(i);
      out.add(even(i) ? callF(f, o) : o);
    }
    return out;
  }

  static public List mapNonCodeTokens(List l, Object f) {
    return mapNonCodeTokens(f, l);
  }

  static public List<String> mapNonCodeTokens(List<String> tok, IF1<String, String> f) {
    return mapNonCodeTokens(tok, (Object) f);
  }

  static public List<String> mapNonCodeTokens(IF1<String, String> f, List<String> tok) {
    return mapNonCodeTokens(tok, f);
  }

  static public String emojisToUnicode(String s) {
    return regexReplace(s, ":(\\w+):", matcher -> lookupOrKeep(emojiShortNameMap(), matcher.group()));
  }

  static public boolean subBot_isHttps() {
    Object httpd = subBot_httpd();
    return eqOneOf(httpd, getOpt(mainBot(), "serveHttps_server"), getOpt(mainBot(), "serveHttpsWithWebsockets_server")) || contains((Collection) getOpt(mainBot(), "serveHttpsWithWebsockets_multiplePorts_servers"), httpd);
  }

  static public String domain() {
    return domainName();
  }

  static public String unicodeFromCodePoint(int codePoint) {
    return codePointToString(codePoint);
  }

  static public String htmldecode(final String input) {
    if (input == null)
      return null;
    final int MIN_ESCAPE = 2;
    final int MAX_ESCAPE = 6;
    StringWriter writer = null;
    int len = input.length();
    int i = 1;
    int st = 0;
    while (true) {
      while (i < len && input.charAt(i - 1) != '&') i++;
      if (i >= len)
        break;
      int j = i;
      while (j < len && j < i + MAX_ESCAPE + 1 && input.charAt(j) != ';') j++;
      if (j == len || j < i + MIN_ESCAPE || j == i + MAX_ESCAPE + 1) {
        i++;
        continue;
      }
      if (input.charAt(i) == '#') {
        int k = i + 1;
        int radix = 10;
        final char firstChar = input.charAt(k);
        if (firstChar == 'x' || firstChar == 'X') {
          k++;
          radix = 16;
        }
        try {
          int entityValue = Integer.parseInt(input.substring(k, j), radix);
          if (writer == null)
            writer = new StringWriter(input.length());
          writer.append(input.substring(st, i - 1));
          if (entityValue > 0xFFFF) {
            final char[] chrs = Character.toChars(entityValue);
            writer.write(chrs[0]);
            writer.write(chrs[1]);
          } else {
            writer.write(entityValue);
          }
        } catch (NumberFormatException ex) {
          i++;
          continue;
        }
      } else {
        CharSequence value = htmldecode_lookupMap.get(input.substring(i, j));
        if (value == null) {
          i++;
          continue;
        }
        if (writer == null)
          writer = new StringWriter(input.length());
        writer.append(input.substring(st, i - 1));
        writer.append(value);
      }
      st = j + 1;
      i = st;
    }
    if (writer != null) {
      writer.append(input.substring(st, len));
      return writer.toString();
    }
    return input;
  }

  static final public String[][] htmldecode_ESCAPES = { { "\"", "quot" }, { "&", "amp" }, { "<", "lt" }, { ">", "gt" }, { "\u00A0", "nbsp" }, { "\u00A1", "iexcl" }, { "\u00A2", "cent" }, { "\u00A3", "pound" }, { "\u00A4", "curren" }, { "\u00A5", "yen" }, { "\u00A6", "brvbar" }, { "\u00A7", "sect" }, { "\u00A8", "uml" }, { "\u00A9", "copy" }, { "\u00AA", "ordf" }, { "\u00AB", "laquo" }, { "\u00AC", "not" }, { "\u00AD", "shy" }, { "\u00AE", "reg" }, { "\u00AF", "macr" }, { "\u00B0", "deg" }, { "\u00B1", "plusmn" }, { "\u00B2", "sup2" }, { "\u00B3", "sup3" }, { "\u00B4", "acute" }, { "\u00B5", "micro" }, { "\u00B6", "para" }, { "\u00B7", "middot" }, { "\u00B8", "cedil" }, { "\u00B9", "sup1" }, { "\u00BA", "ordm" }, { "\u00BB", "raquo" }, { "\u00BC", "frac14" }, { "\u00BD", "frac12" }, { "\u00BE", "frac34" }, { "\u00BF", "iquest" }, { "\u00C0", "Agrave" }, { "\u00C1", "Aacute" }, { "\u00C2", "Acirc" }, { "\u00C3", "Atilde" }, { "\u00C4", "Auml" }, { "\u00C5", "Aring" }, { "\u00C6", "AElig" }, { "\u00C7", "Ccedil" }, { "\u00C8", "Egrave" }, { "\u00C9", "Eacute" }, { "\u00CA", "Ecirc" }, { "\u00CB", "Euml" }, { "\u00CC", "Igrave" }, { "\u00CD", "Iacute" }, { "\u00CE", "Icirc" }, { "\u00CF", "Iuml" }, { "\u00D0", "ETH" }, { "\u00D1", "Ntilde" }, { "\u00D2", "Ograve" }, { "\u00D3", "Oacute" }, { "\u00D4", "Ocirc" }, { "\u00D5", "Otilde" }, { "\u00D6", "Ouml" }, { "\u00D7", "times" }, { "\u00D8", "Oslash" }, { "\u00D9", "Ugrave" }, { "\u00DA", "Uacute" }, { "\u00DB", "Ucirc" }, { "\u00DC", "Uuml" }, { "\u00DD", "Yacute" }, { "\u00DE", "THORN" }, { "\u00DF", "szlig" }, { "\u00E0", "agrave" }, { "\u00E1", "aacute" }, { "\u00E2", "acirc" }, { "\u00E3", "atilde" }, { "\u00E4", "auml" }, { "\u00E5", "aring" }, { "\u00E6", "aelig" }, { "\u00E7", "ccedil" }, { "\u00E8", "egrave" }, { "\u00E9", "eacute" }, { "\u00EA", "ecirc" }, { "\u00EB", "euml" }, { "\u00EC", "igrave" }, { "\u00ED", "iacute" }, { "\u00EE", "icirc" }, { "\u00EF", "iuml" }, { "\u00F0", "eth" }, { "\u00F1", "ntilde" }, { "\u00F2", "ograve" }, { "\u00F3", "oacute" }, { "\u00F4", "ocirc" }, { "\u00F5", "otilde" }, { "\u00F6", "ouml" }, { "\u00F7", "divide" }, { "\u00F8", "oslash" }, { "\u00F9", "ugrave" }, { "\u00FA", "uacute" }, { "\u00FB", "ucirc" }, { "\u00FC", "uuml" }, { "\u00FD", "yacute" }, { "\u00FE", "thorn" }, { "\u00FF", "yuml" }, { "\u2013", "ndash" }, { "\u2018", "lsquo" }, { "\u2019", "rsquo" }, { "\u201D", "rdquo" }, { "\u201C", "ldquo" }, { "\u2014", "mdash" }, { "'", "apos" } };

  static final public HashMap<String, CharSequence> htmldecode_lookupMap;

  static {
    htmldecode_lookupMap = new HashMap<String, CharSequence>();
    for (final CharSequence[] seq : htmldecode_ESCAPES) htmldecode_lookupMap.put(seq[1].toString(), seq[0]);
  }

  static public TreeSet<String> toCaseInsensitiveSet(Iterable<String> c) {
    if (isCISet(c))
      return (TreeSet) c;
    TreeSet<String> set = caseInsensitiveSet();
    addAll(set, c);
    return set;
  }

  static public TreeSet<String> toCaseInsensitiveSet(String... x) {
    TreeSet<String> set = caseInsensitiveSet();
    addAll(set, x);
    return set;
  }

  static public java.text.SimpleDateFormat simpleDateFormat(String format, TimeZone timeZone) {
    java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(format);
    sdf.setTimeZone(timeZone);
    return sdf;
  }

  static public String timeInTimeZone(String timeZone) {
    return timeInTimeZone(timeZone, now());
  }

  static public String timeInTimeZone(String timeZone, long time) {
    return simpleDateFormat_timeZone("HH:mm", timeZone).format(time);
  }

  static public String timeInTimeZone(TimeZone timeZone, long time) {
    return simpleDateFormat("HH:mm", timeZone).format(time);
  }

  static public String ipToCountry2020_dataSnippetID = "#1400400";

  static public Lock ipToCountry2020_lock = lock();

  static public File ipToCountry2020_dataDir() {
    return javaxCachesDir("ipToCountry2020");
  }

  static public String ipToCountry2020(String ip) {
    return ipToCountry2020(ipToInt(ip));
  }

  static public String ipToCountry2020(long ipNum) {
    {
      Lock __0 = ipToCountry2020_lock;
      lock(__0);
      try {
        if (directoryEmpty(ipToCountry2020_dataDir()))
          unzipSnippet(ipToCountry2020_dataSnippetID, ipToCountry2020_dataDir());
      } finally {
        unlock(__0);
      }
    }
    String line = pairB(binarySearchForLineInTextFile(newFile(ipToCountry2020_dataDir(), "IP2LOCATION-LITE-DB1.CSV"), s -> {
      List<String> l = tok_splitAtComma_unquote(s);
      long a = parseLongOpt(first(l)), b = parseLongOpt(second(l));
      return ipNum > b ? 1 : ipNum < a ? -1 : 0;
    }));
    return get(tok_splitAtComma_unquote(line), 2);
  }

  static public String deSquareBracket(String s) {
    if (startsWith(s, "[") && endsWith(s, "]"))
      return substring(s, 1, l(s) - 1);
    return s;
  }

  static public JTextField jTextField() {
    return jTextField("");
  }

  static public JTextField jTextField(final String text) {
    return swing(new F0<JTextField>() {

      public JTextField get() {
        try {
          JTextField tf = new JTextField(unnull(text));
          standardTextFieldPopupMenu(tf);
          jenableUndoRedo(tf);
          tf.selectAll();
          return tf;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JTextField tf = new JTextField(unnull(text));\r\n    standardTextFieldPopupMenu...";
      }
    });
  }

  static public JTextField jTextField(Object o) {
    return jTextField(strOrEmpty(o));
  }

  static public JPanel showFormTitled_customLayout(final F1<Container, Dimension> layouter, final String title, final Object... parts) {
    return showFormTitled_customArrangement(false, new F1<List<JComponent>, JPanel>() {

      public JPanel get(List<JComponent> components) {
        try {
          return customLayoutPanel(layouter, components);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "customLayoutPanel(layouter, components)";
      }
    }, title, parts);
  }

  static public int formLayouter1_yPlus = 5;

  static public int formLayouter1_fixer2 = 0;

  static public F1<Container, Dimension> formLayouter1() {
    final int yplus = formLayouter1_yPlus, fixer2 = formLayouter1_fixer2;
    return new F1<Container, Dimension>() {

      public Dimension get(Container parent) {
        try {
          List<Component> l = getComponents(parent);
          BitSet bigOnes = new BitSet();
          for (int i = 0; i < l(l); i++) if (containsATextArea(l.get(i)))
            add(bigOnes, i);
          int nBigOnes = bigOnes.cardinality();
          int mandatoryHeight = totalPreferredHeight(listWithoutIndicesInBitSet(l, bigOnes));
          int gap = 4, outerSpacing = 5;
          Dimension size = parent.getSize();
          int gapsAndMargins = outerSpacing * 2 - (l(l) - 1) * gap;
          int totalSpace = size.height - gapsAndMargins - fixer2;
          int liberalSpace = totalSpace - mandatoryHeight;
          double perBigOne = doubleRatio(liberalSpace, nBigOnes);
          double y = outerSpacing;
          for (int i = 0; i < l(l); i++) {
            Component c = l.get(i);
            boolean big = contains(bigOnes, i);
            double h = big ? perBigOne : c.getPreferredSize().height;
            int actualY = iround(y);
            c.setBounds(10, actualY, size.width - outerSpacing * 2, iround(y + h) - actualY);
            y += h + gap;
          }
          Dimension pref = componentsBoundingSize(parent, outerSpacing);
          if (parent.getHeight() <= 0) {
            int tph = totalPreferredHeight(l);
            pref.height = tph + gapsAndMargins + yplus;
          }
          return pref;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "L<Component> l = getComponents(parent);\r\n    new BitSet bigOnes;\r\n    for i o...";
      }
    };
  }

  static public String getTextTrim(JTextComponent c) {
    return trim(getText(c));
  }

  static public String getTextTrim(JComboBox cb) {
    return trim(getText(cb));
  }

  static public String getTextTrim(JComponent c) {
    if (c instanceof JLabel)
      return trim(((JLabel) c).getText());
    if (c instanceof JComboBox)
      return getTextTrim((JComboBox) c);
    return getTextTrim((JTextComponent) c);
  }

  static public boolean infoMessage_alwaysOnTop = true;

  static public double infoMessage_defaultTime = 5.0;

  static public JWindow infoMessage(String text) {
    return infoMessage(text, infoMessage_defaultTime);
  }

  static public JWindow infoMessage(final String text, final double seconds) {
    printHidingCredentials(text);
    return infoMessage_noprint(text, seconds);
  }

  static public JWindow infoMessage_noprint(String text) {
    return infoMessage_noprint(text, infoMessage_defaultTime);
  }

  static public JWindow infoMessage_noprint(final String _text, final double seconds) {
    final String text = hideCredentials(_text);
    if (empty(text))
      return null;
    logQuotedWithDate(infoBoxesLogFile(), text);
    if (isHeadless())
      return null;
    return (JWindow) swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          final JWindow window = showWindow(infoMessage_makePanel(text));
          window.setSize(300, 150);
          moveToTopRightCorner(window);
          if (infoMessage_alwaysOnTop)
            window.setAlwaysOnTop(true);
          if (vmBus_noObjections("shouldShowInfoBox", window, text))
            window.setVisible(true);
          if (seconds != 0)
            disposeWindowAfter(iround(seconds * 1000), window);
          return window;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "final JWindow window = showWindow(infoMessage_makePanel(text));\r\n    window.s...";
      }
    });
  }

  static public JWindow infoMessage(Throwable e) {
    printStackTrace(e);
    return infoMessage(exceptionToStringShort(e));
  }

  static public String programName() {
    return getProgramName();
  }

  static public int showForm_defaultGap = 4;

  static public int showForm_gapBetweenColumns = 10;

  static public JPanel showFormTitled(final String title, final Object... _parts) {
    JDesktopPane desktop = mainDesktopPane();
    if (desktop != null)
      return showInternalFrameFormTitled(desktop, title, _parts);
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          final Var<JFrame> frame = new Var();
          JPanel panel = showForm_makePanel(false, _parts);
          frame.set(showForm_makeFrame(title, panel));
          return panel;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "final new Var<JFrame> frame;\r\n    JPanel panel = showForm_makePanel(false, _p...";
      }
    });
  }

  static public JPanel showForm_makePanel(Boolean internalFrame, Object... _parts) {
    List<JComponent> out = showForm_arrange1(showForm_makeComponents(internalFrame, _parts));
    return vstackWithSpacing(out, showForm_defaultGap);
  }

  static public void callF_thread(final Object f, final Object... args) {
    if (f != null) {
      startThread(new Runnable() {

        public void run() {
          try {
            callF(f, args);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "callF(f, args);";
        }
      });
    }
  }

  static public <A extends JComponent> A renameSubmitButton(A form, String newName) {
    renameButton(form, showFormSubmitButtonName(), newName);
    return form;
  }

  static public <A extends JComponent> A renameSubmitButton(String newName, A form) {
    return renameSubmitButton(form, newName);
  }

  static public String htmlTagFullParamString(String tag) {
    int i = indexOfSpaceEtc(tag);
    return trimSubstring(i, dropSuffix(">", tag));
  }

  static public void clearToken(List<String> tok, int i) {
    tok.set(i, "");
  }

  static public <A> IterableIterator<Pair<Integer, A>> iterateListWithIndex(Collection<A> l) {
    return iterateListWithIndex(l, 0);
  }

  static public <A> IterableIterator<Pair<Integer, A>> iterateListWithIndex(Collection<A> l, int startAt) {
    return iff(new Object() {

      public Iterator it = iterator(l);

      public int i = startAt;

      public Object get() {
        if (!it.hasNext())
          return endMarker();
        return pair(i++, it.next());
      }
    });
  }

  static public String squareBracketed(String s) {
    return "[" + s + "]";
  }

  static public int numberOfWords2(String s) {
    return l(words2(s));
  }

  static public String joinPairWithColon(Pair p) {
    return p == null ? "" : str(p.a) + ": " + str(p.b);
  }

  static public void assertStartsWith(List a, List b) {
    if (!startsWith(a, b))
      throw fail(a + " does not start with " + b);
  }

  static public void assertStartsWith(String a, String b) {
    if (!startsWith(a, b))
      throw fail(quote(a) + " does not start with " + quote(b));
  }

  static public String getCanonicalPath(File f) {
    try {
      return f == null ? null : f.getCanonicalPath();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String getCanonicalPath(String path) {
    return getCanonicalPath(newFile(path));
  }

  static public AutoCloseable tempCleaningUp() {
    return tempSetTL(ping_isCleanUpThread, true);
  }

  static public void closeAllWriters(Collection<? extends Writer> l) {
    for (Writer w : unnull(l)) {
      try {
        w.close();
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public <A> A nextToLast(List<A> l) {
    return get(l, l(l) - 2);
  }

  static public String dropTrailingSlash(String s) {
    return dropSuffix("/", s);
  }

  static public List<String> dropTagsAndHTMLComments(List<String> tok) {
    return dropHTMLComments(dropTags(tok));
  }

  static public String dropTagsAndHTMLComments(String html) {
    return join(dropTagsAndHTMLComments(htmlTok(html)));
  }

  static public String renderVars(Object... params) {
    List<String> l = new ArrayList();
    for (int i = 0; i + 1 < l(params); i += 2) l.add(params[i] + "=" + struct(params[i + 1]) + ". ");
    return trim(join(l));
  }

  static public String[] conceptFields_drop = { "className", "fieldValues", "id", "created", "_modified", "refs", "backRefs", "_concepts" };

  static public Set<String> conceptFields(Concept c) {
    return setMinus(mergeSets(allNonStaticNonTransientFields(c), keys(c.fieldValues)), conceptFields_drop);
  }

  static public Set<String> conceptFields(Class<? extends Concept> c) {
    return setMinus(allNonStaticNonTransientFields(c), conceptFields_drop);
  }

  static public String hjavascript_src_snippet(String snippetID) {
    return hfulltag("script", "", "src", snippetRawURL(snippetID, "text/javascript"));
  }

  static public String newLinesToSpaces_trim(String s) {
    return s == null ? null : trim(s).replaceAll("\\s*\r?\n\\s*", " ");
  }

  static public boolean regexpMatches(String pat, String s) {
    return pat != null && s != null && regexp(pat, s).matches();
  }

  static public <A, B> Map<A, B> filterMapByFunctionOnKey(Map<A, B> map, Object f) {
    Map<A, B> m2 = similarEmptyMap(map);
    for (A a : keys(map)) {
      if (isTrue(callF(f, a)))
        m2.put(a, map.get(a));
    }
    return m2;
  }

  static public <A, B> Map<A, B> filterMapByFunctionOnKey(Object f, Map<A, B> map) {
    return filterMapByFunctionOnKey(map, f);
  }

  static public Integer mmo2_levenWithSwapsScore(MMOPattern pattern, String s) {
    return mmo2_levenWithSwapsScore(pattern, s, false, false);
  }

  static public Integer mmo2_levenWithSwapsScore(MMOPattern pattern, String s, boolean startOfLine, boolean endOfLine) {
    String s2 = trim(s);
    if (pattern == null)
      return null;
    if (startsWith(s2, "#"))
      return null;
    if (pattern instanceof MMOPattern.StartOfLine)
      return mmo2_levenWithSwapsScore(((MMOPattern.StartOfLine) pattern).p, s2, true, endOfLine);
    if (pattern instanceof MMOPattern.EndOfLine)
      return mmo2_levenWithSwapsScore(((MMOPattern.EndOfLine) pattern).p, s2, startOfLine, true);
    if (pattern instanceof MMOPattern.Phrase) {
      if (((MMOPattern.Phrase) pattern).quoted)
        return mmo2_match(((MMOPattern.Phrase) pattern), s2) ? (Integer) 0 : null;
      String p = ((MMOPattern.Phrase) pattern).phrase;
      if (startsWith(p, "#"))
        return null;
      if (endsWith(p, "!"))
        return find3(p, s) ? 0 : null;
      else
        return find3_levenWithSwapsDistance(p, s2);
    }
    if (pattern instanceof MMOPattern.And) {
      int score = 0;
      for (MMOPattern pat : ((MMOPattern.And) pattern).l) {
        Integer score2 = mmo2_levenWithSwapsScore(pat, s2, startOfLine, endOfLine);
        if (score2 == null)
          return null;
        score += score2;
      }
      return score;
    }
    if (pattern instanceof MMOPattern.Or) {
      Integer min = null;
      for (MMOPattern pat : ((MMOPattern.Or) pattern).l) min = min_withNull(min, mmo2_levenWithSwapsScore(pat, s2, startOfLine, endOfLine));
      return min;
    }
    if (pattern instanceof MMOPattern.Not)
      return mmo2_match(pattern, s2) ? 0 : null;
    throw fail("what. " + pattern);
  }

  static public Integer mmo2_levenWithSwapsScore(String pattern, String s) {
    return mmo2_levenWithSwapsScore(mmo2_parsePattern(pattern), s, false, false);
  }

  static public List<IntRange> parseBusinessHours(String s) {
    List<String> parts = nempties(tok_splitAtComma(s));
    return map(parts, part -> {
      List<String> l = splitAtMinus(part);
      IntRange r = intRange(parseHourAndOptionalMinutesToMinutes(first(l)), parseHourAndOptionalMinutesToMinutes(second(l)));
      if (r.end < r.start && r.start <= 12 * 60 && r.end < 12 * 60)
        r.end += 12 * 60;
      return r;
    });
  }

  static public IntRange intRange(int start, int end) {
    return new IntRange(start, end);
  }

  static public int hours() {
    return hours(java.util.Calendar.getInstance());
  }

  static public int hours(java.util.Calendar c) {
    return c.get(java.util.Calendar.HOUR_OF_DAY);
  }

  static public int hours(long time) {
    return hours(calendarFromTime(time));
  }

  static public int hours(long time, TimeZone tz) {
    return hours(calendarFromTime(time, tz));
  }

  static public int minutes() {
    return minutes(Calendar.getInstance());
  }

  static public int minutes(Calendar c) {
    return c.get(Calendar.MINUTE);
  }

  static public java.util.Calendar calendarFromTime(long time, TimeZone tz) {
    java.util.Calendar c = java.util.Calendar.getInstance(tz);
    c.setTimeInMillis(time);
    return c;
  }

  static public java.util.Calendar calendarFromTime(long time) {
    java.util.Calendar c = java.util.Calendar.getInstance();
    c.setTimeInMillis(time);
    return c;
  }

  static public boolean intRangeContains(IntRange r, int i) {
    return r != null && i >= r.start && i < r.end;
  }

  static public <A> List<A> syncList() {
    return synchroList();
  }

  static public <A> List<A> syncList(List<A> l) {
    return synchroList(l);
  }

  static public <A> boolean syncAddAll(Collection<A> c, Iterable<A> b) {
    if (c == null || b == null)
      return false;
    synchronized (c) {
      return c.addAll(asCollection(b));
    }
  }

  static public <A, B> List<B> syncLambdaMap(IF1<A, B> f, Collection<A> l) {
    if (l == null)
      return emptyList();
    synchronized (collectionMutex(l)) {
      return map(l, f);
    }
  }

  static public <A> A shallowClone(A o) {
    return (A) shallowClone_impl(o);
  }

  static public <A> A shallowClone(A o, A emptyClone) {
    return copyFields(o, emptyClone);
  }

  static public Object shallowClone_impl(Object o) {
    if (o == null)
      return o;
    if (o instanceof List)
      return cloneList((List) o);
    if (o instanceof Map)
      return cloneMap(((Map) o));
    if (o instanceof String || o instanceof Number || o instanceof Boolean)
      return o;
    if (o instanceof Object[]) {
      Object[] l = (Object[]) o;
      return l.clone();
    }
    Class c = o.getClass();
    final Object clone = nuEmptyObject(c);
    copyFields(o, clone);
    return clone;
  }

  static public Set<String> allFields(Object o) {
    TreeSet<String> fields = new TreeSet();
    Class _c = _getClass(o);
    do {
      for (Field f : _c.getDeclaredFields()) fields.add(f.getName());
      _c = _c.getSuperclass();
    } while (_c != null);
    return fields;
  }

  static public int stdHash(Object a, String... fields) {
    if (a == null)
      return 0;
    int hash = getClassName(a).hashCode();
    for (String field : fields) hash = boostHashCombine(hash, hashCode(getOpt(a, field)));
    return hash;
  }

  static public String replacePlusWithSpace(String s) {
    return replace(s, '+', ' ');
  }

  static public List<String> splitAtSpace(String s) {
    return empty(s) ? emptyList() : asList(s.split("\\s+"));
  }

  static public int scoredSearch_score_single(String s, String query) {
    int i = indexOfIC_underscore(s, query);
    if (i < 0)
      return 0;
    if (i > 0)
      return 1;
    return l(s) == l(query) ? 3 : 2;
  }

  static public <A, B> Comparator<A> mapComparatorDesc(final Map<A, B> map) {
    return new Comparator<A>() {

      public int compare(A a, A b) {
        return cmp(map.get(b), map.get(a));
      }
    };
  }

  static public <A, B extends Number> A keyWithBiggestValue(Map<A, B> map) {
    A best = null;
    Number bestScore = null;
    for (A key : keys(map)) {
      Number score = map.get(key);
      if (best == null || cmp(score, bestScore) > 0) {
        best = key;
        bestScore = score;
      }
    }
    return best;
  }

  static public void cancelTimer(javax.swing.Timer timer) {
    if (timer != null)
      timer.stop();
  }

  static public void cancelTimer(java.util.Timer timer) {
    if (timer != null)
      timer.cancel();
  }

  static public void cancelTimer(Object o) {
    if (o instanceof java.util.Timer)
      cancelTimer((java.util.Timer) o);
    else if (o instanceof javax.swing.Timer)
      cancelTimer((javax.swing.Timer) o);
    else if (o instanceof AutoCloseable) {
      try {
        ((AutoCloseable) o).close();
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public Object dm_callOS(String functionName, Object... args) {
    return call(dm_os(), functionName, args);
  }

  static public com.sun.management.OperatingSystemMXBean advancedOSMXBean() {
    return optCast(com.sun.management.OperatingSystemMXBean.class, osMXBean());
  }

  static public void close(AutoCloseable c) {
    _close(c);
  }

  static public <A> A proxyFromInvocationHandler(Class<A> intrface, InvocationHandler handler) {
    return (A) java.lang.reflect.Proxy.newProxyInstance(intrface.getClassLoader(), new Class[] { intrface }, handler);
  }

  static public String getQueryFromURL(String url) {
    return dropAfterSubstring(substring(url, smartIndexOf(url, "?") + 1), "#");
  }

  static public Object subBot_serveByteArray(byte[] data, String mimeType) {
    return call(mainBot(), "serveByteArray", data, mimeType);
  }

  static public String jsonEncode_shallowLineBreaks(Object o) {
    return jsonEncode_breakAtLevel1(o);
  }

  static public void jsonEncode_shallowLineBreaks(Object o, StringBuilder buf, int level) {
    jsonEncode_breakAtLevel1(o, buf, level);
  }

  static public String javaTokDropTrailingN(String s) {
    List<String> tok = javaTok(s);
    return empty(last(tok)) ? unnull(s) : join(dropLast(tok));
  }

  static public List map_ping(Iterable l, Object f) {
    return map_ping(f, l);
  }

  static public List map_ping(Object f, Iterable l) {
    List x = emptyList(l);
    if (l != null)
      for (Object o : l) x.add(callF(f, o));
    return x;
  }

  static public <A, B> List<B> map_ping(Iterable<A> l, F1<A, B> f) {
    return map_ping(f, l);
  }

  static public <A, B> List<B> map_ping(F1<A, B> f, Iterable<A> l) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) x.add(callF(f, o));
    return x;
  }

  static public <A, B> List<B> map_ping(IF1<A, B> f, Iterable<A> l) {
    return map_ping(l, f);
  }

  static public <A, B> List<B> map_ping(Iterable<A> l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) {
        ping();
        x.add(f.get(o));
      }
    return x;
  }

  static public <A, B> List<B> map_ping(IF1<A, B> f, A[] l) {
    return map_ping(l, f);
  }

  static public <A, B> List<B> map_ping(A[] l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) {
        ping();
        x.add(f.get(o));
      }
    return x;
  }

  static public List map_ping(Object f, Object[] l) {
    return map_ping(f, asList(l));
  }

  static public List map_ping(Object[] l, Object f) {
    return map_ping(f, l);
  }

  static public List map_ping(Object f, Map map) {
    return map_ping(map, f);
  }

  static public List map_ping(Map map, Object f) {
    List x = new ArrayList();
    if (map != null)
      for (Object _e : map.entrySet()) {
        ping();
        Map.Entry e = (Map.Entry) _e;
        x.add(callF(f, e.getKey(), e.getValue()));
      }
    return x;
  }

  static public <A, B, C> List<C> map_ping(Map<A, B> map, IF2<A, B, C> f) {
    return map_ping(map, (Object) f);
  }

  static public boolean endsWithLetter(String s) {
    return nempty(s) && isLetter(last(s));
  }

  static public HashSet mapToSet(Object f, Iterable l) {
    return mapToHashSet(f, l);
  }

  static public <A, B> HashSet<B> mapToSet(IF1<A, B> f, Iterable<A> l) {
    return mapToSet((Object) f, l);
  }

  static public <A, B> HashSet<B> mapToSet(IF1<A, B> f, A[] l) {
    return mapToSet(f, asList(l));
  }

  static public <A, B> HashSet<B> mapToSet(Iterable<A> l, IF1<A, B> f) {
    return mapToSet((Object) f, l);
  }

  static public Object unstructure(String text) {
    return unstructure(text, false);
  }

  static public Object unstructure(String text, boolean allDynamic) {
    return unstructure(text, allDynamic, null);
  }

  static public Object unstructure(String text, IF1<String, Class> classFinder) {
    return unstructure(text, false, classFinder);
  }

  static public int structure_internStringsLongerThan = 50;

  static public int unstructure_unquoteBufSize = 100;

  static public int unstructure_tokrefs;

  abstract static public class unstructure_Receiver {

    abstract public void set(Object o);
  }

  static public Object unstructure(String text, boolean allDynamic, Object classFinder) {
    if (text == null)
      return null;
    return unstructure_tok(javaTokC_noMLS_iterator(text), allDynamic, classFinder);
  }

  static public Object unstructure_reader(BufferedReader reader) {
    return unstructure_tok(javaTokC_noMLS_onReader(reader), false, null);
  }

  static public Object unstructure_tok(final Producer<String> tok, final boolean allDynamic, final Object _classFinder) {
    final boolean debug = unstructure_debug;
    final class X {

      public int i = -1;

      final public Object classFinder = _classFinder != null ? _classFinder : _defaultClassFinder();

      public HashMap<Integer, Object> refs = new HashMap();

      public HashMap<Integer, Object> tokrefs = new HashMap();

      public HashSet<String> concepts = new HashSet();

      public HashMap<String, Class> classesMap = new HashMap();

      public List<Runnable> stack = new ArrayList();

      public Map<String, String> baseClassMap = new HashMap();

      public String curT;

      public char[] unquoteBuf = new char[unstructure_unquoteBufSize];

      public Class findAClass(String fullClassName) {
        return classFinder != null ? (Class) callF(classFinder, fullClassName) : findClass_fullName(fullClassName);
      }

      public String unquote(String s) {
        return unquoteUsingCharArray(s, unquoteBuf);
      }

      public String t() {
        return curT;
      }

      public String tpp() {
        String t = curT;
        consume();
        return t;
      }

      public void parse(final unstructure_Receiver out) {
        String t = t();
        int refID;
        if (structure_isMarker(t, 0, l(t))) {
          refID = parseInt(t.substring(1));
          consume();
        } else
          refID = -1;
        final int tokIndex = i;
        parse_inner(refID, tokIndex, new unstructure_Receiver() {

          public void set(Object o) {
            if (refID >= 0)
              refs.put(refID, o);
            if (o != null)
              tokrefs.put(tokIndex, o);
            out.set(o);
          }
        });
      }

      public void parse_inner(int refID, int tokIndex, unstructure_Receiver out) {
        String t = t();
        Class c = classesMap.get(t);
        if (c == null) {
          if (t.startsWith("\"")) {
            String s = internIfLongerThan(unquote(tpp()), structure_internStringsLongerThan);
            out.set(s);
            return;
          }
          if (t.startsWith("'")) {
            out.set(unquoteCharacter(tpp()));
            return;
          }
          if (t.equals("bigint")) {
            out.set(parseBigInt());
            return;
          }
          if (t.equals("d")) {
            out.set(parseDouble());
            return;
          }
          if (t.equals("fl")) {
            out.set(parseFloat());
            return;
          }
          if (t.equals("sh")) {
            consume();
            t = tpp();
            if (t.equals("-")) {
              t = tpp();
              out.set((short) (-parseInt(t)));
              return;
            }
            out.set((short) parseInt(t));
            return;
          }
          if (t.equals("-")) {
            consume();
            t = tpp();
            out.set(isLongConstant(t) ? (Object) (-parseLong(t)) : (Object) (-parseInt(t)));
            return;
          }
          if (isInteger(t) || isLongConstant(t)) {
            consume();
            if (isLongConstant(t)) {
              out.set(parseLong(t));
              return;
            }
            long l = parseLong(t);
            boolean isInt = l == (int) l;
            out.set(isInt ? (Object) Integer.valueOf((int) l) : (Object) Long.valueOf(l));
            return;
          }
          if (t.equals("false") || t.equals("f")) {
            consume();
            out.set(false);
            return;
          }
          if (t.equals("true") || t.equals("t")) {
            consume();
            out.set(true);
            return;
          }
          if (t.equals("-")) {
            consume();
            t = tpp();
            out.set(isLongConstant(t) ? (Object) (-parseLong(t)) : (Object) (-parseInt(t)));
            return;
          }
          if (isInteger(t) || isLongConstant(t)) {
            consume();
            if (isLongConstant(t)) {
              out.set(parseLong(t));
              return;
            }
            long l = parseLong(t);
            boolean isInt = l == (int) l;
            out.set(isInt ? (Object) Integer.valueOf((int) l) : (Object) Long.valueOf(l));
            return;
          }
          if (t.equals("File")) {
            consume();
            File f = new File(unquote(tpp()));
            out.set(f);
            return;
          }
          if (t.startsWith("r") && isInteger(t.substring(1))) {
            consume();
            int ref = Integer.parseInt(t.substring(1));
            Object o = refs.get(ref);
            if (o == null)
              throw fail("unsatisfied back reference " + ref);
            out.set(o);
            return;
          }
          if (t.startsWith("t") && isInteger(t.substring(1))) {
            consume();
            int ref = Integer.parseInt(t.substring(1));
            Object o = tokrefs.get(ref);
            if (o == null)
              throw fail("unsatisfied token reference " + ref + " at " + tokIndex);
            out.set(o);
            return;
          }
          if (t.equals("hashset")) {
            parseHashSet(out);
            return;
          }
          if (t.equals("lhs")) {
            parseLinkedHashSet(out);
            return;
          }
          if (t.equals("treeset")) {
            parseTreeSet(out);
            return;
          }
          if (t.equals("ciset")) {
            parseCISet(out);
            return;
          }
          if (eqOneOf(t, "hashmap", "hm")) {
            consume();
            parseMap(new HashMap(), out);
            return;
          }
          if (t.equals("lhm")) {
            consume();
            parseMap(new LinkedHashMap(), out);
            return;
          }
          if (t.equals("tm")) {
            consume();
            parseMap(new TreeMap(), out);
            return;
          }
          if (t.equals("cimap")) {
            consume();
            parseMap(ciMap(), out);
            return;
          }
          if (t.equals("ll")) {
            consume();
            LinkedList l = new LinkedList();
            if (refID >= 0)
              refs.put(refID, l);
            {
              parseList(l, out);
              return;
            }
          }
          if (t.equals("syncLL")) {
            consume();
            {
              parseList(synchroLinkedList(), out);
              return;
            }
          }
          if (t.equals("sync")) {
            consume();
            {
              parse(new unstructure_Receiver() {

                public void set(Object value) {
                  if (value instanceof Map) {
                    if (value instanceof NavigableMap) {
                      out.set(Collections.synchronizedNavigableMap((NavigableMap) value));
                      return;
                    }
                    if (value instanceof SortedMap) {
                      out.set(Collections.synchronizedSortedMap((SortedMap) value));
                      return;
                    }
                    {
                      out.set(Collections.synchronizedMap((Map) value));
                      return;
                    }
                  } else {
                    out.set(Collections.synchronizedList((List) value));
                    return;
                  }
                }
              });
              return;
            }
          }
          if (t.equals("{")) {
            parseMap(out);
            return;
          }
          if (t.equals("[")) {
            ArrayList l = new ArrayList();
            if (refID >= 0)
              refs.put(refID, l);
            this.parseList(l, out);
            return;
          }
          if (t.equals("bitset")) {
            parseBitSet(out);
            return;
          }
          if (t.equals("array") || t.equals("intarray") || t.equals("dblarray")) {
            parseArray(out);
            return;
          }
          if (t.equals("ba")) {
            consume();
            String hex = unquote(tpp());
            out.set(hexToBytes(hex));
            return;
          }
          if (t.equals("boolarray")) {
            consume();
            int n = parseInt(tpp());
            String hex = unquote(tpp());
            out.set(boolArrayFromBytes(hexToBytes(hex), n));
            return;
          }
          if (t.equals("class")) {
            out.set(parseClass());
            return;
          }
          if (t.equals("l")) {
            parseLisp(out);
            return;
          }
          if (t.equals("null")) {
            consume();
            out.set(null);
            return;
          }
          if (eq(t, "c")) {
            consume();
            t = t();
            assertTrue(isJavaIdentifier(t));
            concepts.add(t);
          }
          if (eq(t, "cu")) {
            consume();
            t = tpp();
            assertTrue(isJavaIdentifier(t));
            String fullClassName = "main$" + t;
            Class _c = findAClass(fullClassName);
            if (_c == null)
              throw fail("Class not found: " + fullClassName);
            parse(new unstructure_Receiver() {

              public void set(Object value) {
                out.set(call(_c, "_deserialize", value));
              }
            });
            return;
          }
        }
        if (eq(t, "j")) {
          consume();
          out.set(parseJava());
          return;
        }
        if (eq(t, "bc")) {
          consume();
          String c1 = tpp();
          String c2 = tpp();
          baseClassMap.put(c1, c2);
          {
            parse_inner(refID, i, out);
            return;
          }
        }
        if (c == null && !isJavaIdentifier(t))
          throw new RuntimeException("Unknown token " + (i + 1) + ": " + quote(t));
        consume();
        String className, fullClassName;
        if (eq(t(), ".")) {
          consume();
          className = fullClassName = t + "." + assertIdentifier(tpp());
        } else {
          className = t;
          fullClassName = "main$" + t;
        }
        if (c == null && !allDynamic) {
          c = findAClass(fullClassName);
          if (c != null)
            classesMap.put(className, c);
        }
        if (c == null && !allDynamic) {
          String baseName = baseClassMap.get(className);
          if (baseName != null) {
            c = findAClass("main$" + baseName);
            if (c != null)
              classesMap.put(className, c);
          }
        }
        boolean hasBracket = eq(t(), "(");
        if (hasBracket)
          consume();
        boolean hasOuter = hasBracket && eq(t(), "this$1");
        DynamicObject dO = null;
        Object o = null;
        final String thingName = t;
        if (c != null) {
          o = hasOuter ? nuStubInnerObject(c, classFinder) : nuEmptyObject(c);
          if (o instanceof DynamicObject)
            dO = (DynamicObject) o;
        } else {
          if (concepts.contains(t) && (c = findAClass("main$Concept")) != null)
            o = dO = (DynamicObject) nuEmptyObject(c);
          else
            dO = new DynamicObject();
          dO.className = className;
        }
        if (refID >= 0)
          refs.put(refID, o != null ? o : dO);
        tokrefs.put(tokIndex, o != null ? o : dO);
        HashMap<String, Object> fields = new HashMap();
        Object _o = o;
        DynamicObject _dO = dO;
        if (hasBracket) {
          stack.add(new Runnable() {

            public void run() {
              try {
                if (eq(t(), ","))
                  consume();
                if (eq(t(), ")")) {
                  consume(")");
                  objRead(_o, _dO, fields, hasOuter);
                  out.set(_o != null ? _o : _dO);
                } else {
                  final String key = unquote(tpp());
                  String t = tpp();
                  if (!eq(t, "="))
                    throw fail("= expected, got " + t + " after " + quote(key) + " in object " + thingName);
                  stack.add(this);
                  parse(new unstructure_Receiver() {

                    public void set(Object value) {
                      fields.put(key, value);
                    }
                  });
                }
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "ifdef unstructure_debug\r\n            print(\"in object values, token: \" + t())...";
            }
          });
        } else {
          objRead(o, dO, fields, hasOuter);
          out.set(o != null ? o : dO);
        }
      }

      public void objRead(Object o, DynamicObject dO, Map<String, Object> fields, boolean hasOuter) {
        if (o != null) {
          if (dO != null) {
            setOptAllDyn_pcall(dO, fields);
          } else {
            setOptAll_pcall(o, fields);
          }
          if (hasOuter)
            fixOuterRefs(o);
        } else
          for (Map.Entry<String, Object> e : fields.entrySet()) setDynObjectValue(dO, intern(e.getKey()), e.getValue());
        if (o != null)
          pcallOpt_noArgs(o, "_doneLoading");
      }

      public void parseSet(final Set set, final unstructure_Receiver out) {
        this.parseList(new ArrayList(), new unstructure_Receiver() {

          public void set(Object o) {
            set.addAll((List) o);
            out.set(set);
          }
        });
      }

      public void parseLisp(final unstructure_Receiver out) {
        throw fail("class Lisp not included");
      }

      public void parseBitSet(final unstructure_Receiver out) {
        consume("bitset");
        consume("{");
        final BitSet bs = new BitSet();
        stack.add(new Runnable() {

          public void run() {
            try {
              if (eq(t(), "}")) {
                consume("}");
                out.set(bs);
              } else {
                stack.add(this);
                parse(new unstructure_Receiver() {

                  public void set(Object o) {
                    bs.set((Integer) o);
                    if (eq(t(), ","))
                      consume();
                  }
                });
              }
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "if (eq(t(), \"}\")) {\r\n          consume(\"}\");\r\n          out.set(bs);\r\n       ...";
          }
        });
      }

      public void parseList(final List list, final unstructure_Receiver out) {
        tokrefs.put(i, list);
        consume("[");
        stack.add(new Runnable() {

          public void run() {
            try {
              if (eq(t(), "]")) {
                consume();
                out.set(list);
              } else {
                stack.add(this);
                parse(new unstructure_Receiver() {

                  public void set(Object o) {
                    list.add(o);
                    if (eq(t(), ","))
                      consume();
                  }
                });
              }
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "if (eq(t(), \"]\")) {\r\n          consume();\r\n          ifdef unstructure_debug\r...";
          }
        });
      }

      public void parseArray(final unstructure_Receiver out) {
        final String type = tpp();
        consume("{");
        final List list = new ArrayList();
        stack.add(new Runnable() {

          public void run() {
            try {
              if (eq(t(), "}")) {
                consume("}");
                out.set(type.equals("intarray") ? toIntArray(list) : type.equals("dblarray") ? toDoubleArray(list) : list.toArray());
              } else {
                stack.add(this);
                parse(new unstructure_Receiver() {

                  public void set(Object o) {
                    list.add(o);
                    if (eq(t(), ","))
                      consume();
                  }
                });
              }
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "if (eq(t(), \"}\")) {\r\n          consume(\"}\");\r\n          out.set(\r\n           ...";
          }
        });
      }

      public Object parseClass() {
        consume("class");
        consume("(");
        String name = unquote(tpp());
        consume(")");
        Class c = allDynamic ? null : findAClass(name);
        if (c != null)
          return c;
        DynamicObject dO = new DynamicObject();
        dO.className = "java.lang.Class";
        name = dropPrefix("main$", name);
        dO.fieldValues.put("name", name);
        return dO;
      }

      public Object parseBigInt() {
        consume("bigint");
        consume("(");
        String val = tpp();
        if (eq(val, "-"))
          val = "-" + tpp();
        consume(")");
        return new BigInteger(val);
      }

      public Object parseDouble() {
        consume("d");
        consume("(");
        String val = unquote(tpp());
        consume(")");
        return Double.parseDouble(val);
      }

      public Object parseFloat() {
        consume("fl");
        String val;
        if (eq(t(), "(")) {
          consume("(");
          val = unquote(tpp());
          consume(")");
        } else {
          val = unquote(tpp());
        }
        return Float.parseFloat(val);
      }

      public void parseHashSet(unstructure_Receiver out) {
        consume("hashset");
        parseSet(new HashSet(), out);
      }

      public void parseLinkedHashSet(unstructure_Receiver out) {
        consume("lhs");
        parseSet(new LinkedHashSet(), out);
      }

      public void parseTreeSet(unstructure_Receiver out) {
        consume("treeset");
        parseSet(new TreeSet(), out);
      }

      public void parseCISet(unstructure_Receiver out) {
        consume("ciset");
        parseSet(ciSet(), out);
      }

      public void parseMap(unstructure_Receiver out) {
        parseMap(new TreeMap(), out);
      }

      public Object parseJava() {
        String j = unquote(tpp());
        Matches m = new Matches();
        if (jmatch("java.awt.Color[r=*,g=*,b=*]", j, m))
          return nuObject("java.awt.Color", parseInt(m.unq(0)), parseInt(m.unq(1)), parseInt(m.unq(2)));
        else {
          warn("Unknown Java object: " + j);
          return null;
        }
      }

      public void parseMap(final Map map, final unstructure_Receiver out) {
        consume("{");
        stack.add(new Runnable() {

          public boolean v = false;

          public Object key;

          public void run() {
            if (v) {
              v = false;
              stack.add(this);
              if (!eq(tpp(), "="))
                throw fail("= expected, got " + t() + " in map of size " + l(map));
              parse(new unstructure_Receiver() {

                public void set(Object value) {
                  map.put(key, value);
                  if (eq(t(), ","))
                    consume();
                }
              });
            } else {
              if (eq(t(), "}")) {
                consume("}");
                out.set(map);
              } else {
                v = true;
                stack.add(this);
                parse(new unstructure_Receiver() {

                  public void set(Object o) {
                    key = o;
                  }
                });
              }
            }
          }
        });
      }

      public void consume() {
        curT = tok.next();
        ++i;
      }

      public void consume(String s) {
        if (!eq(t(), s)) {
          throw fail(quote(s) + " expected, got " + quote(t()));
        }
        consume();
      }

      public void parse_initial(unstructure_Receiver out) {
        consume();
        parse(out);
        while (nempty(stack)) popLast(stack).run();
      }
    }
    ThreadLocal<Boolean> tlLoading = dynamicObjectIsLoading_threadLocal();
    Boolean b = tlLoading.get();
    tlLoading.set(true);
    try {
      final Var v = new Var();
      X x = new X();
      x.parse_initial(new unstructure_Receiver() {

        public void set(Object o) {
          v.set(o);
        }
      });
      unstructure_tokrefs = x.tokrefs.size();
      return v.get();
    } finally {
      tlLoading.set(b);
    }
  }

  static public boolean unstructure_debug = false;

  static public boolean isString(Object o) {
    return o instanceof String;
  }

  static public Object dm_getService(String serviceName) {
    return empty(serviceName) ? null : dm_getModule(vmBus_query(assertIdentifier(serviceName)));
  }

  static public boolean isStringOrIntOrLong(Object o) {
    return o instanceof String || o instanceof Integer || o instanceof Long;
  }

  static public Object dm_resolveModule(Object moduleOrStem) {
    return dm_callOS("resolveModule", moduleOrStem);
  }

  static public double toM_double(long l) {
    return l / (1024 * 1024.0);
  }

  static public int findEndOfBlock(List<String> cnc, int i) {
    int j = i + 2, level = 1, n = cnc.size();
    while (j < n) {
      String t = cnc.get(j);
      if ("{".equals(t))
        ++level;
      else if ("}".equals(t))
        --level;
      if (level == 0)
        return j + 1;
      j += 2;
    }
    return n;
  }

  static public boolean tok_isJavaxMetaCommandLeftOf(List<String> tok, int i) {
    int j = i - 2 * 4 - 1;
    if (j >= 0 && jfind(subList(tok, j, i), "set flag <id> .") == 1)
      return true;
    return false;
  }

  static public <A> boolean eqGetOneOf(List<A> l, int i, A... options) {
    return eqOneOf(get(l, i), options);
  }

  static public int leftScanModifiers(List<String> tok, int i) {
    List<String> mod = getJavaModifiers();
    while (i > 1 && mod.contains(tok.get(i - 2))) i -= 2;
    return i;
  }

  static public <A> A assertEquals(Object x, A y) {
    return assertEquals(null, x, y);
  }

  static public <A> A assertEquals(String msg, Object x, A y) {
    if (assertVerbose())
      return assertEqualsVerbose(msg, x, y);
    if (!(x == null ? y == null : x.equals(y)))
      throw fail((msg != null ? msg + ": " : "") + y + " != " + x);
    return y;
  }

  static public File makeTempDir() {
    return (File) call(getJavaX(), "TempDirMaker_make");
  }

  static public File linux_fileInRamDisk(String name) {
    if (!isLinux())
      return null;
    File dir = newFile("/dev/shm");
    if (dir.isDirectory())
      return newFile(dir, name);
    return null;
  }

  static public boolean isMarkedAsSrcLib(String snippetID) {
    if (snippetID == null)
      return false;
    IResourceLoader rl = vm_getResourceLoader();
    if (rl != null)
      return isJavaxCompilableSnippetType(rl.getSnippetType(snippetID));
    return fileExists(javaxCodeDir("srclibs/" + psI(snippetID)));
  }

  static public Object hotwire_onCompile;

  static public boolean hotwire_serially = false;

  static public Lock hotwire_overInternalBot_lock = lock();

  static public boolean hotwire_compileOnServer = false;

  static public Class<?> hotwire_overInternalBot(String progID) {
    return hotwire_overInternalBot(progID, "main");
  }

  static public Class<?> hotwire_overInternalBot(String progID, String mainClass) {
    try {
      Pair<File, String> p;
      try {
        p = hotwire_compile(progID);
      } catch (Throwable e) {
        throw rethrow("Error hotwiring " + progID, e);
      }
      File jar = p.a;
      assertTrue(jar.getAbsolutePath(), jar.isFile());
      List<File> files = hotwire_collectJars(jar);
      JavaXClassLoader classLoader = hotwire_makeClassLoader(files);
      classLoader.progID = progID;
      return hotwire_finish(classLoader, progID, p.b, mainClass);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Pair<File, String> hotwire_compile(String progID) {
    Pair<File, String> p = hotwire_compileOnServer && !isLocalSnippetID(progID) ? compileSnippetThroughServer(progID) : CompilerBot.compileSnippet2(progID);
    Lock __0 = hotwire_serially ? hotwire_overInternalBot_lock : null;
    lock(__0);
    try {
      callF(hotwire_onCompile, p);
      return p;
    } finally {
      unlock(__0);
    }
  }

  static public void markAsSrcLib(String snippetID) {
    saveTextFile(javaxCodeDir("srclibs/" + psI(snippetID)), "");
  }

  static public List<File> filesWithExtension(String ext, List<File> files) {
    return filesEndingWith(files, addPrefixIfNotEmpty2(".", ext));
  }

  static public List<File> findAllFiles_noDirs(List dirs) {
    return findAllFiles_noDirs(asObjectArray(dirs));
  }

  static public List<File> findAllFiles_noDirs(Object... dirs) {
    List<File> l = new ArrayList();
    for (Object dir : dirs) {
      if (dir instanceof String && ((String) dir).endsWith("/.")) {
        for (File f : listFiles(dropSuffix("/.", (String) dir))) if (f.isFile())
          l.add(f);
      } else
        findAllFiles_noDirs_impl(toFile(dir), l);
    }
    return l;
  }

  static public void findAllFiles_noDirs_impl(File dir, List<File> l) {
    for (File f : listFiles(dir)) {
      if (f.isDirectory())
        findAllFiles_noDirs_impl(f, l);
      else
        l.add(f);
    }
  }

  static public File[] listFiles(File dir) {
    File[] files = dir.listFiles();
    return files == null ? new File[0] : files;
  }

  static public File[] listFiles(String dir) {
    return listFiles(new File(dir));
  }

  static public List<File> sortFilesByName(List<File> l) {
    sort(l, (a, b) -> stdcompare(a.getName(), b.getName()));
    return l;
  }

  static public int deleteAllFilesInDirectory_minPathLength = 10;

  static public void deleteAllFilesInDirectory(File dir) {
    deleteAllFilesInDirectory(dir, false, false);
  }

  static public void deleteAllFilesInDirectory(File dir, boolean verbose, boolean testRun) {
    dir = getCanonicalFile(dir);
    assertTrue(f2s(dir), l(f2s(dir)) >= deleteAllFilesInDirectory_minPathLength);
    File[] files = dir.listFiles();
    if (files == null)
      return;
    for (File f : files) {
      if (!isSymLink(f) && f.isDirectory())
        deleteDirectory(f, verbose, testRun);
      else {
        if (verbose)
          print((testRun ? "Would delete " : "Deleting ") + f.getAbsolutePath());
        if (!testRun)
          f.delete();
      }
    }
  }

  static public Object callJavaX(String method, Object... args) {
    return callOpt(getJavaX(), method, args);
  }

  static public ClassLoader getClassLoaderOrSame(Object o) {
    return o instanceof ClassLoader ? (ClassLoader) o : getClassLoader(o);
  }

  static public void printShortException(Throwable e) {
    print(exceptionToStringShort(e));
  }

  static public void printShortException(String s, Throwable e) {
    print(s, exceptionToStringShort(e));
  }

  static public boolean java10OrHigher() {
    return parseFirstInt(javaVersion()) >= 10;
  }

  static public boolean addDefaultVMOption(String option) {
    String s = defaultVMArgs(), old = s;
    if (!s.contains(option))
      s = trim(s + " " + option);
    if (eq(old, s))
      return false;
    {
      setDefaultVMArgs(s);
      return true;
    }
  }

  static public byte[] intToBytes(int i) {
    return new byte[] { (byte) (i >>> 24), (byte) (i >>> 16), (byte) (i >>> 8), (byte) i };
  }

  static public List<String> splitByJavaToken(String s, String splitToken) {
    List<String> tok = javaTok(s);
    List<String> l = new ArrayList();
    int i = 1;
    while (i < l(tok)) {
      int j = smartIndexOf(tok, splitToken, i);
      l.add(join(subList(tok, i, j - 1)));
      i = j + 2;
    }
    return l;
  }

  static public String dollarVarsToStars(String s) {
    return dollarVarsToStars(s, null);
  }

  static public String dollarVarsToStars(String s, List<String> varNames_out) {
    List<String> tok = javaTok(s);
    for (int i = 1; i < l(tok); i += 2) {
      String t = tok.get(i);
      if (isDollarVar(t)) {
        listAdd(varNames_out, t);
        tok.set(i, "*");
      } else if (eq(t, "*"))
        listAdd(varNames_out, "*");
    }
    return join(tok);
  }

  static public void tok_statementToBlock(List<String> tok, int i) {
    if (neqGet(tok, i, "{")) {
      int iEnd = tok_findEndOfStatement(tok, i) - 1;
      tokAppend_reTok(tok, iEnd, " }");
      tokPrepend_reTok(tok, i, "{ ");
    }
  }

  static public void tokAppend_reTok(List<String> tok, int i, String s) {
    tok.set(i, tok.get(i) + s);
    reTok(tok, i, i + 1);
  }

  static public <A, B> List<B> mapWithIndexStartingAt1(List<A> l, IF2<Integer, A, B> f) {
    List<B> out = emptyList(l);
    for (int i = 0; i < l(l); i++) out.add(f.get(i + 1, l.get(i)));
    return out;
  }

  static public boolean containsDollarVars(String s) {
    for (String t : javaTokC(s)) if (isDollarVar(t))
      return true;
    return false;
  }

  static public List<String> toLinesFullTrim_java(String text) {
    return tlft(joinLines(map("javaDropComments", tlft(text))));
  }

  static public String dm_moduleLibID() {
    return programID() + "/" + shortClassName(dm_current_mandatory_generic());
  }

  static public String dm_moduleLibID(Object mod) {
    if (mod == null)
      return null;
    mod = dm_getModule(mod);
    if (hasSuperclassShortNamed(mod, "DynModule"))
      return programID(mod) + "/" + shortClassName(mod);
    return null;
  }

  static public List<String> dm_modulesWithLibID(final String moduleLibID) {
    return filter(dm_moduleIDs(), new F1<String, Boolean>() {

      public Boolean get(String m) {
        try {
          return eq(dm_moduleLibID(m), moduleLibID);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "eq(dm_moduleLibID(m), moduleLibID)";
      }
    });
  }

  static public String dm_moduleID(Object module) {
    return strOrNull(getOpt(dm_getStem(module), "id"));
  }

  static public String dm_moduleID() {
    return dm_moduleID(dm_current_mandatory_generic());
  }

  static public String lowestByAlphaNum(Collection<String> c) {
    String best = null;
    for (String s : unnull(c)) if (best == null || alphaNumComparator().compare(s, best) < 0)
      best = s;
    return best;
  }

  static public <A extends Concept> boolean isConceptClassIndexed(Class<A> c) {
    return isConceptClassIndexed(db_mainConcepts(), c);
  }

  static public <A extends Concept> boolean isConceptClassIndexed(Concepts concepts, Class<A> c) {
    return concepts.conceptCounterForClass(c) != null;
  }

  static public void indexRandomConceptField(Class<? extends Concept> c) {
    indexRandomConceptField(db_mainConcepts(), c);
  }

  static public void indexRandomConceptField(Concepts cc, Class<? extends Concept> c) {
    String field = or(first(conceptFields(c)), "_dummy");
    print("Indexing " + c + "." + field);
    indexConceptField(cc, c, field);
  }

  static public <A extends JComponent> A setToolTipText(final A c, final Object toolTip) {
    if (c == null)
      return null;
    {
      swing(new Runnable() {

        public void run() {
          try {
            String s = nullIfEmpty(str(toolTip));
            if (neq(s, c.getToolTipText()))
              c.setToolTipText(s);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "String s = nullIfEmpty(str(toolTip));\r\n    if (neq(s, c.getToolTipText()))\r\n ...";
        }
      });
    }
    return c;
  }

  static public <A extends JComponent> A setToolTipText(Object toolTip, A c) {
    return setToolTipText(c, toolTip);
  }

  static public JButton jbutton(String text, Object action) {
    return newButton(text, action);
  }

  static public JButton jbutton(String text) {
    return newButton(text, null);
  }

  static public JButton jbutton(Action action) {
    return swingNu(JButton.class, action);
  }

  static public String unicode_downPointingTriangle() {
    return charToString(0x25BC);
  }

  static public <A> A optPar_ignoreOddLength(Object[] opt, String name, A defaultValue) {
    int n = l(opt);
    if (n == 1 && opt[0] instanceof Map) {
      Map map = (Map) (opt[0]);
      return map.containsKey(name) ? (A) map.get(name) : defaultValue;
    }
    for (int i = 0; i + 1 < l(opt); i += 2) if (eq(opt[i], name))
      return (A) opt[i + 1];
    return defaultValue;
  }

  static public Object optPar_ignoreOddLength(Object[] opt, String name) {
    return optPar_ignoreOddLength(opt, name, null);
  }

  static public Object optPar_ignoreOddLength(String name, Object[] params) {
    return optPar_ignoreOddLength(params, name);
  }

  static public void fillJPopupMenu(JPopupMenu m, Object... x) {
    if (x == null)
      return;
    for (int i = 0; i < l(x); i++) {
      Object o = x[i], y = get(x, i + 1);
      if (o instanceof IVF1)
        callF(o, m);
      else if (o instanceof List)
        fillJPopupMenu(m, asArray((List) o));
      else if (isMenuSeparatorIndicator(o))
        m.addSeparator();
      else if (o instanceof LiveValue && ((LiveValue) o).getType() == String.class && isRunnableX(y)) {
        final LiveValue<String> lv = (LiveValue<String>) o;
        final JMenuItem mi = jmenuItem("", y);
        bindLiveValueListenerToComponent(mi, lv, new Runnable() {

          public void run() {
            try {
              String s = lv.get();
              if (isCurlyBracketed(s)) {
                setEnabled(mi, false);
                s = unCurlyBracket(s);
              } else
                setEnabled(mi, true);
              setText(mi, s);
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "String s = lv.get();\r\n        if (isCurlyBracketed(s)) {\r\n          setEnable...";
          }
        });
        m.add(mi);
      } else if (o instanceof String && isRunnableX(y)) {
        m.add(jmenuItem((String) o, y));
        ++i;
      } else if (o instanceof JMenuItem)
        m.add((JMenuItem) o);
      else if (o instanceof String || o instanceof Action || o instanceof Component)
        call(m, "add", o);
      else if (o != null)
        print("Unknown menu item: " + o);
    }
  }

  static public int getPreferredWidth(Component c) {
    return preferredWidth(c);
  }

  static public Object interceptPrintInThisThread(Object f) {
    Object old = print_byThread().get();
    print_byThread().set(f);
    return old;
  }

  static public Object mainBot() {
    return getMainBot();
  }

  static public long collectMinLong(Collection c, String field) {
    long x = Long.MAX_VALUE;
    for (Object o : unnull(c)) {
      Long l = (Long) (getOpt(o, field));
      if (l != null)
        x = min(x, l);
    }
    return x;
  }

  static public long collectMaxLong(Collection c, String field) {
    long x = Long.MIN_VALUE;
    for (Object o : unnull(c)) {
      Long l = (Long) (getOpt(o, field));
      if (l != null)
        x = max(x, l);
    }
    return x;
  }

  static public String i(String s, Object... params) {
    return tag("i", s, params);
  }

  static public String formatDateAndTime(long timestamp) {
    return formatDate(timestamp);
  }

  static public String formatDateAndTime() {
    return formatDate();
  }

  static public String shortenEndTime(String endTime, String startTime) {
    int i = endTime.lastIndexOf(' ') + 1;
    if (i > 0 && eq(substring(startTime, 0, i), substring(endTime, 0, i)))
      return trim(substring(endTime, i));
    return endTime;
  }

  static public String unicode_leftPointingTriangle() {
    return unicodeFromCodePoint(0x25C2);
  }

  static public String unicode_rightPointingTriangle() {
    return charToString(0x25B8);
  }

  static public File parentFile(File f) {
    return dirOfFile(f);
  }

  static public String hms() {
    return hms(now());
  }

  static public String hms(long time) {
    return new SimpleDateFormat("HHmmss").format(time);
  }

  static public int smartLastIndexOf(String s, char c) {
    if (s == null)
      return 0;
    int i = s.lastIndexOf(c);
    return i >= 0 ? i : l(s);
  }

  static public <A> int smartLastIndexOf(List<A> l, A sub) {
    int i = lastIndexOf(l, sub);
    return i < 0 ? l(l) : i;
  }

  static public int year() {
    return localYear();
  }

  static public int year(long now) {
    return localYear(now);
  }

  static public int year(long now, TimeZone tz) {
    return parseInt(simpleDateFormat("y", tz).format(now));
  }

  static public String formatInt(int i, int digits) {
    return padLeft(str(i), '0', digits);
  }

  static public String formatInt(long l, int digits) {
    return padLeft(str(l), '0', digits);
  }

  static public int month() {
    return localMonth();
  }

  static public int month(long now) {
    return localMonth(now);
  }

  static public int month(long now, TimeZone tz) {
    return parseInt(simpleDateFormat("M", tz).format(now));
  }

  static public int dayOfMonth() {
    return localDayOfMonth();
  }

  static public int dayOfMonth(long now) {
    return localDayOfMonth(now);
  }

  static public int dayOfMonth(long now, TimeZone tz) {
    return parseInt(simpleDateFormat("d", tz).format(now));
  }

  static public long toK(long l) {
    return (l + 1023) / 1024;
  }

  static public List<String> listZipFile(File inZip) {
    try {
      ZipFile zipFile = new ZipFile(inZip);
      try {
        return listZipFile(zipFile);
      } finally {
        zipFile.close();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public List<String> listZipFile(ZipFile zipFile) {
    try {
      List<String> list = new ArrayList();
      Enumeration entries = zipFile.entries();
      while (entries.hasMoreElements()) {
        ZipEntry entry = (ZipEntry) entries.nextElement();
        if (!entry.isDirectory())
          list.add(entry.getName());
      }
      return list;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public List<String> listZipFile(String name) {
    if (isSnippetID(name))
      return listZipFile(loadLibrary(name));
    return listZipFile(getProgramFile(name));
  }

  static public <A, B> void mapPut_noOverwrite(Map<A, B> map, A key, B value) {
    if (map != null && key != null && value != null && !map.containsKey(key))
      map.put(key, value);
  }

  static public <A> String pnlToString(String prefix, Iterable<A> l) {
    return hijackPrint(new Runnable() {

      public void run() {
        try {
          pnl(prefix, l);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pnl(prefix, l)";
      }
    });
  }

  static public <A> String pnlToString(final Iterable<A> l) {
    return hijackPrint(new Runnable() {

      public void run() {
        try {
          pnl(l);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pnl(l)";
      }
    });
  }

  static public <A> String pnlToString(final A[] l) {
    return hijackPrint(new Runnable() {

      public void run() {
        try {
          pnl(l);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pnl(l)";
      }
    });
  }

  static public <A, B> String pnlToString(final Map<A, B> map) {
    return hijackPrint(new Runnable() {

      public void run() {
        try {
          pnl(map);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pnl(map)";
      }
    });
  }

  static public <A, B> String pnlToString(MultiMap<A, B> map) {
    return pnlToString(multiMapToMap(map));
  }

  static public String actualProgramID() {
    return programID();
  }

  static public <A, B> MultiMap<A, B> treeMultiMap() {
    return new MultiMap(true);
  }

  static public <A, B> MultiMap<A, B> treeMultiMap(Comparator<A> comparator) {
    return new MultiMap(new TreeMap<A, List<B>>(comparator));
  }

  static public <A> List<A> sortedByField(Collection<A> c, final String field) {
    List<A> l = new ArrayList(c);
    sort(l, new Comparator<A>() {

      public int compare(A a, A b) {
        return cmp(getOpt(a, field), getOpt(b, field));
      }
    });
    return l;
  }

  static public <A> List<A> sortedByField(String field, Collection<A> c) {
    return sortedByField(c, field);
  }

  static public Object loadJSONFile(File f) {
    return jsonDecode(loadTextFile(f));
  }

  static public List<String> filterNempty(Collection<String> c) {
    List<String> l = new ArrayList();
    for (String x : unnull(c)) if (nempty(x))
      l.add(x);
    return l;
  }

  static public <A> A objectWhere(Collection<A> c, Object... data) {
    return findWhere(c, data);
  }

  static public <A> Comparator<A> descFieldComparator(final String field) {
    return new Comparator<A>() {

      public int compare(A a, A b) {
        return cmp(getOpt(b, field), getOpt(a, field));
      }
    };
  }

  static public TimerTask timerTask(final Object r, final java.util.Timer timer) {
    return new TimerTask() {

      public void run() {
        if (!licensed())
          timer.cancel();
        else
          pcallF(r);
      }
    };
  }

  static public void ensureDBNotRunning(String name) {
    if (hasBot(name)) {
      try {
        String framesBot = dropSuffix(".", name) + " Frames";
        print("Trying to activate frames of running DB: " + framesBot);
        if (isOK(sendOpt(framesBot, "activate frames")) && isMainProgram())
          cleanKill();
      } catch (Throwable __e) {
        _handleException(__e);
      }
      throw fail("Already running: " + name);
    }
  }

  static public void ensureDBNotRunning() {
    ensureDBNotRunning(dbBotStandardName());
  }

  static public String dbBotStandardName() {
    String home = userHome();
    String name = dbBotName(getDBProgramID());
    if (neq(home, actualUserHome()))
      name += " " + quote(home);
    return name + ".";
  }

  static volatile public Android3 dbBot_instance;

  static public Android3 dbBot() {
    return dbBot(true);
  }

  static public Android3 dbBot(boolean ensureNotRunning) {
    return dbBot(dbBotStandardName(), ensureNotRunning);
  }

  static public Android3 dbBot(String name) {
    return dbBot(name, true);
  }

  static public Android3 dbBot(String name, boolean ensureNotRunning) {
    if (ensureNotRunning)
      ensureDBNotRunning(name);
    return dbBot_instance = methodsBot2(name, assertNotNull(db_mainConcepts()), db_standardExposedMethods(), db_mainConcepts().lock);
  }

  static public void thinAProgramsBackups(String progID, boolean doIt) {
    List<File> files = new ArrayList();
    Map<File, Double> ageMap = new HashMap();
    java.util.regex.Pattern pat = regexp("^(.*)\\.backup(20\\d\\d)(\\d\\d)(\\d\\d)-(\\d\\d)$");
    File dir = programDir(progID);
    for (File f : listFilesNotDirs(dir, newFile(dir, "backups"))) {
      String s = f.getName();
      java.util.regex.Matcher matcher = pat.matcher(s);
      {
        if (!(matcher.find()))
          continue;
      }
      String originalName = matcher.group(1);
      {
        if (!(eq(originalName, "concepts.structure.gz")))
          continue;
      }
      int year = matcherInt(matcher, 2);
      int month = matcherInt(matcher, 3);
      int day = matcherInt(matcher, 4);
      int hour = matcherInt(matcher, 5);
      long time = timestampFromYMDH(year, month, day, hour);
      double age = ((now() - time) / 1000.0 / 60 / 60 / 24);
      ageMap.put(f, age);
      files.add(f);
    }
    int numDeleted = 0;
    sortByMap_inPlace(files, ageMap);
    double lastAge = -1;
    for (File f : files) {
      double age = ageMap.get(f);
      if (!thinAProgramsBackups_shouldKeep(age, lastAge)) {
        ++numDeleted;
        if (doIt) {
          print("Deleting: " + f);
          f.delete();
        }
      } else {
        lastAge = age;
      }
    }
    if (numDeleted != 0)
      print((doIt ? "Deleted: " : "Would delete: ") + n(numDeleted, "file"));
  }

  static public boolean thinAProgramsBackups_shouldKeep(double age, double lastAge) {
    return defaultAgeBasedBackupRetentionStrategy_shouldKeep(age, lastAge);
  }

  static public <A> A lookupOrKeep(Map<A, A> map, A key) {
    return map != null && map.containsKey(key) ? map.get(key) : key;
  }

  static public Object subBot_httpd() {
    Object httpd = getThreadLocal((ThreadLocal) getOpt(mainBot(), "MyHTTPD_current"));
    if (httpd == null)
      httpd = getThreadLocal((ThreadLocal) getOpt(mainBot(), "WebSocketHTTPD_current"));
    return httpd;
  }

  static public String domainName() {
    Object session = call(getMainBot(), "getSession");
    Map headers = (Map) (call(session, "getHeaders"));
    String host = (String) (headers.get("host"));
    if (host == null)
      return null;
    return dropFrom(host, ":");
  }

  static public String codePointToString(int codePoint) {
    return new String(Character.toChars(codePoint));
  }

  static public SimpleDateFormat simpleDateFormat_timeZone(String format, String timeZone) {
    SimpleDateFormat sdf = new SimpleDateFormat(format);
    sdf.setTimeZone(timeZone(timeZone));
    return sdf;
  }

  static public long ipToInt(String ip) {
    Matches m = new Matches();
    assertTrue(jmatch("*.*.*.*", ip, m));
    return parseLong(m.unq(3)) | parseLong(m.unq(2)) << 8 | parseLong(m.unq(1)) << 16 | parseLong(m.unq(0)) << 24;
  }

  static public boolean directoryEmpty(File f) {
    return directoryIsEmpty(f);
  }

  static public void unzipSnippet(String snippetID, File toDir) {
    print("Unzipping snippet " + snippetID + " to " + toDir);
    zip2dir(loadLibrary(snippetID), toDir);
  }

  static public Pair<LongRange, String> binarySearchForLineInTextFile(File file, IF1<String, Integer> nav) {
    long length = l(file);
    int bufSize = 1024;
    RandomAccessFile raf = randomAccessFileForReading(file);
    try {
      long min = 0, max = length;
      int direction = 0;
      Pair<LongRange, String> possibleResult = null;
      while (min < max) {
        ping();
        long middle = (min + max) / 2;
        long lineStart = raf_findBeginningOfLine(raf, middle, bufSize);
        long lineEnd = raf_findEndOfLine(raf, middle, bufSize);
        String line = fromUtf8(raf_readFilePart(raf, lineStart, (int) (lineEnd - 1 - lineStart)));
        direction = nav.get(line);
        possibleResult = pair(new LongRange(lineStart, lineEnd), line);
        if (direction == 0)
          return possibleResult;
        if (direction < 0)
          max = assertLessThan(max, lineStart);
        else
          min = assertBiggerThan(min, lineEnd);
      }
      if (direction >= 0)
        return possibleResult;
      long lineStart = raf_findBeginningOfLine(raf, min - 1, bufSize);
      String line = fromUtf8(raf_readFilePart(raf, lineStart, (int) (min - 1 - lineStart)));
      return pair(new LongRange(lineStart, min), line);
    } finally {
      _close(raf);
    }
  }

  static public List<String> tok_splitAtComma_unquote(String s) {
    List<String> tok = javaTok(s);
    List<String> out = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      int j = smartIndexOf(tok, ",", i);
      out.add(unquote(trimJoinSubList(tok, i, j)));
      i = j;
    }
    return out;
  }

  static public long parseLongOpt(String s) {
    return isInteger(s) ? parseLong(s) : 0;
  }

  static public JTextField standardTextFieldPopupMenu(final JTextField tf) {
    final WeakReference<JTextField> ref = weakRef(tf);
    componentPopupMenuItem(tf, "Copy text to clipboard", new Runnable() {

      public void run() {
        try {
          copyTextToClipboard(ref.get().getText());
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "copyTextToClipboard(ref.get().getText())";
      }
    });
    componentPopupMenuItem(tf, "Paste", new Runnable() {

      public void run() {
        try {
          ref.get().paste();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ref.get().paste()";
      }
    });
    return tf;
  }

  static public <A extends JTextComponent> A jenableUndoRedo(final A textcomp) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            final UndoManager undo = new UndoManager();
            vm_generalWeakSet("Undo Managers").add(undo);
            textcomp.getDocument().addUndoableEditListener(new UndoableEditListener() {

              public void undoableEditHappened(UndoableEditEvent evt) {
                undo.addEdit(evt.getEdit());
              }
            });
            textcomp.getActionMap().put("Undo", abstractAction("Undo", new Runnable() {

              public void run() {
                try {
                  if (undo.canUndo())
                    undo.undo();
                } catch (Exception __e) {
                  throw rethrow(__e);
                }
              }

              public String toString() {
                return "if (undo.canUndo()) undo.undo()";
              }
            }));
            textcomp.getActionMap().put("Redo", abstractAction("Redo", new Runnable() {

              public void run() {
                try {
                  if (undo.canRedo())
                    undo.redo();
                } catch (Exception __e) {
                  throw rethrow(__e);
                }
              }

              public String toString() {
                return "if (undo.canRedo()) undo.redo()";
              }
            }));
            textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Z"), "Undo");
            textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Y"), "Redo");
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "final new UndoManager undo;\r\n    vm_generalWeakSet(\"Undo Managers\").add(undo)...";
        }
      });
    }
    return textcomp;
  }

  static public JPanel showFormTitled_customArrangement(final boolean internalFrame, final F1<List<JComponent>, JPanel> arrange, final String title, final Object... _parts) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          List<JComponent> out = showForm_arrange1(showForm_makeComponents(internalFrame, _parts));
          JPanel panel = callF(arrange, out);
          showForm_makeFrame(title, panel);
          return panel;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "L<JComponent> out = showForm_arrange1(showForm_makeComponents(internalFrame, ...";
      }
    });
  }

  static public JPanel customLayoutPanel(final Object layouter) {
    return jpanel(layoutManagerFromFunction(layouter));
  }

  static public JPanel customLayoutPanel(final Object layouter, final List<? extends Component> components) {
    return addAllComponents(customLayoutPanel(layouter), components);
  }

  static public List<Component> getComponents(final Component c) {
    return !(c instanceof Container) ? emptyList() : asList(swing(new F0<Component[]>() {

      public Component[] get() {
        try {
          return ((Container) c).getComponents();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret ((Container) c).getComponents();";
      }
    }));
  }

  static public boolean containsATextArea(Component c) {
    return childOfType(c, JTextArea.class) != null;
  }

  static public int totalPreferredHeight(List<Component> l) {
    int h = 0;
    for (Component c : unnull(l)) h += c.getPreferredSize().height;
    return h;
  }

  static public <A> List<A> listWithoutIndicesInBitSet(List<A> l, BitSet bs) {
    List<A> out = new ArrayList();
    for (int i = 0; i < l(l); i++) if (!bs.get(i))
      out.add(l.get(i));
    return out;
  }

  static public Dimension componentsBoundingSize(Container container, int insetBottomRight) {
    Rectangle r = new Rectangle(0, 0, 0, 0);
    for (Component c : container.getComponents()) r = rectangleUnion(r, c.getBounds());
    return new Dimension(r.x + r.width + insetBottomRight, r.y + r.height + insetBottomRight);
  }

  static public String getText(final AbstractButton c) {
    return c == null ? "" : (String) swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          return c.getText();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret c.getText();";
      }
    });
  }

  static public String getText(final JTextComponent c) {
    return c == null ? "" : (String) swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          return c.getText();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret c.getText();";
      }
    });
  }

  static public String getText(final JLabel l) {
    return l == null ? "" : (String) swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          return l.getText();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret l.getText();";
      }
    });
  }

  static public String getText(final JComboBox cb) {
    if (cb == null)
      return null;
    if (isEditableComboBox(cb))
      return unnull((String) cb.getEditor().getItem());
    else
      return str(cb.getSelectedItem());
  }

  static public <A> A printHidingCredentials(A o) {
    print(hideCredentials(str(o)));
    return o;
  }

  static public void logQuotedWithDate(String s) {
    logQuotedWithTime(s);
  }

  static public void logQuotedWithDate(String logFile, String s) {
    logQuotedWithTime(logFile, s);
  }

  static public void logQuotedWithDate(File logFile, String s) {
    logQuotedWithTime(logFile, s);
  }

  static public File infoBoxesLogFile() {
    return new File(javaxDataDir(), "Logs/infoBoxes.txt");
  }

  static public JWindow showWindow(Component c) {
    JWindow w = new JWindow();
    w.add(wrap(c));
    return w;
  }

  static public JPanel infoMessage_makePanel(String text) {
    final JTextArea ta = wrappedTextArea(text);
    onClick(ta, new Runnable() {

      public void run() {
        try {
          disposeWindow(ta);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "disposeWindow(ta)";
      }
    });
    int size = 14;
    if (l(text) <= 50)
      size *= 2;
    else if (l(text) < 100)
      size = iround(size * 1.5);
    ta.setFont(typeWriterFont(size));
    JScrollPane sp = jscroll(ta);
    return withMargin(sp);
  }

  static public boolean vmBus_noObjections(String msg, Object... args) {
    return !vmBus_anyFalse(msg, args);
  }

  static public String getProgramName_cache;

  static public String getProgramName() {
    Lock __0 = downloadLock();
    lock(__0);
    try {
      if (getProgramName_cache == null)
        getProgramName_cache = getSnippetTitleOpt(programID());
      return getProgramName_cache;
    } finally {
      unlock(__0);
    }
  }

  static public void _onLoad_getProgramName() {
    {
      startThread(new Runnable() {

        public void run() {
          try {
            getProgramName();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "getProgramName();";
        }
      });
    }
  }

  static public JDesktopPane mainDesktopPane_value;

  static public JDesktopPane mainDesktopPane() {
    return mainDesktopPane_value;
  }

  static public JPanel showInternalFrameFormTitled(final JDesktopPane desktop, final String title, final Object... _parts) {
    JPanel panel = showForm_makePanel(true, _parts);
    showForm_makeInternalFrame(desktop, title, panel);
    return panel;
  }

  static public JFrame showForm_makeFrame(String title, JPanel panel) {
    return handleEscapeKey(minFrameWidth(showPackedFrame(title, withMargin(panel)), 400));
  }

  static public List<JComponent> showForm_arrange1(List<List<JComponent>> l) {
    int minW = showForm_leftWidth(l);
    List<JComponent> out = new ArrayList();
    for (List<JComponent> row : l) out.add(westAndCenter(withRightMargin(showForm_gapBetweenColumns, jMinWidthAtLeast(minW, first(row))), second(row)));
    return out;
  }

  static public List<List<JComponent>> showForm_makeComponents(final Boolean internalFrame, Object... _parts) {
    List<List<JComponent>> l = new ArrayList();
    List parts = asList(_parts);
    JButton submitButton = null;
    for (int i = 0; i < l(parts); i++) {
      final Object o = parts.get(i), next = get(parts, i + 1);
      if (o instanceof String && next instanceof Component)
        setComponentID((Component) next, (String) o);
      if (o instanceof Component || o instanceof String || next instanceof Component) {
        l.add(mapLL("wrapForSmartAdd", o == null ? new JPanel() : o instanceof String ? humanizeFormLabel((String) o) : o, next));
        if (next instanceof JButton && submitButton == null)
          submitButton = (JButton) next;
        i++;
      } else if (isRunnable(o))
        l.add(mapLL("wrapForSmartAdd", null, submitButton = jbutton(showFormSubmitButtonName(), new Runnable() {

          public void run() {
            try {
              Object result = call(o);
              print("Result of form runnable: " + result + ". Button:  " + heldInstance(JButton.class));
              if (neq(Boolean.FALSE, result)) {
                if (isTrue(internalFrame))
                  disposeInternalFrame(heldInstance(JButton.class));
                else if (isFalse(internalFrame))
                  disposeFrame(heldInstance(JButton.class));
              }
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "Object result = call(o);\r\n        print(\"Result of form runnable: \" + result ...";
          }
        })));
      else
        print("showForm: Unknown element type: " + getClassName(o));
    }
    if (submitButton != null) {
      final JButton _submitButton = submitButton;
      onEnterInAllTextFields(concatLists(l), new Runnable() {

        public void run() {
          try {
            clickButton(_submitButton);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "clickButton(_submitButton)";
        }
      });
    }
    for (List<JComponent> row : l) {
      JComponent left = first(row);
      if (left instanceof JLabel)
        makeBold((JLabel) left).setVerticalAlignment(JLabel.TOP);
    }
    return l;
  }

  static public int vstackWithSpacing_default = 10;

  static public JPanel vstackWithSpacing(final List parts) {
    return vstackWithSpacing(parts, vstackWithSpacing_default);
  }

  static public JPanel vstackWithSpacing(final List parts, final int spacing) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel panel = new JPanel(new GridBagLayout());
          GridBagConstraints gbc = new GridBagConstraints();
          gbc.weightx = 1;
          gbc.fill = GridBagConstraints.HORIZONTAL;
          gbc.gridwidth = GridBagConstraints.REMAINDER;
          gbc.insets = new Insets(spacing / 2, 0, spacing / 2, 0);
          smartAddWithLayout(panel, gbc, toObjectArray(nonNulls(parts)));
          gbc.weighty = 1;
          gbc.insets = new Insets(0, 0, 0, 0);
          panel.add(jrigid(), gbc);
          return panel;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel panel = new JPanel(new GridBagLayout);\r\n    new GridBagConstraints gbc...";
      }
    });
  }

  static public JPanel vstackWithSpacing(Component... parts) {
    return vstackWithSpacing(asList(parts), vstackWithSpacing_default);
  }

  static public JPanel vstackWithSpacing(int spacing, Component... parts) {
    return vstackWithSpacing(asList(parts), spacing);
  }

  static public JButton renameButton(JComponent c, String name) {
    JButton b = first(childrenOfType(c, JButton.class));
    if (b != null)
      b.setText(name);
    return b;
  }

  static public JButton renameButton(JComponent c, String oldName, String newName) {
    JButton b = findButton(c, oldName);
    if (b != null)
      b.setText(newName);
    return b;
  }

  static public String showFormSubmitButtonName() {
    return "Submit";
  }

  static public int indexOfSpaceEtc(String s) {
    int n = l(s);
    for (int i = 0; i < n; i++) if (isSpace(s.charAt(i)))
      return i;
    return -1;
  }

  static public List<String> words2(String s) {
    List<String> l = new ArrayList();
    int n = l(s);
    for (int i = 0; i < n; ) {
      int j = i;
      while (j < n && isLetterOrDigit(s.charAt(j))) ++j;
      if (j > i)
        l.add(substring(s, i, j));
      while (j < n && !isLetterOrDigit(s.charAt(j))) ++j;
      i = j;
    }
    return l;
  }

  static public List<String> dropHTMLComments(List<String> tok) {
    List<String> l = new ArrayList();
    for (int idx = 0; idx < l(tok); idx++) {
      String t = tok.get(idx);
      if (even(idx)) {
        int i;
        while ((i = t.indexOf("<!--")) >= 0) {
          int j = smartIndexOf(t, "-->", i + 4);
          t = substring(t, 0, i) + substring(t, j + 3);
        }
      }
      l.add(t);
    }
    return l;
  }

  static public <A> Set<A> setMinus(Set<A> set, Object... stuff) {
    Set s2 = cloneSet(set);
    for (Object o : stuff) s2.remove(o);
    return s2;
  }

  static public <A> Set<A> mergeSets(Collection<A>... l) {
    return joinSets(l);
  }

  static public Set<String> allNonStaticNonTransientFields(Object o) {
    TreeSet<String> fields = new TreeSet();
    Class _c = _getClass(o);
    do {
      for (Field f : _c.getDeclaredFields()) if ((f.getModifiers() & (Modifier.STATIC | Modifier.TRANSIENT)) == 0)
        fields.add(f.getName());
      _c = _c.getSuperclass();
    } while (_c != null);
    return fields;
  }

  static public String snippetRawURL(String snippetID) {
    return snippetRawURL(snippetID, null);
  }

  static public String snippetRawURL(String snippetID, String contentType) {
    return "https://botcompany.de/serve/" + psI(snippetID) + htmlQuery("ct", contentType);
  }

  static public Matcher regexp(String pat, String s) {
    return regexp(compileRegexp(pat), unnull(s));
  }

  static public Matcher regexp(java.util.regex.Pattern pat, String s) {
    return pat.matcher(unnull(s));
  }

  static public java.util.regex.Pattern regexp(String pat) {
    return compileRegexp(pat);
  }

  static public Integer find3_levenWithSwapsDistance(String pat, String input) {
    List<String> tokPat = parse3_cachedPattern(pat);
    List<String> tok = parse3_cachedInput(input);
    int end = tok.size() - tokPat.size() + 1;
    Integer min = null;
    for (int idx = 0; idx < end; idx += 2) {
      int score = 0;
      for (int i = 1; i < tokPat.size(); i += 2) {
        String p = tokPat.get(i), t = tok.get(idx + i);
        score += levenWithSwapsIC(p, t);
      }
      min = min_withNull(min, score);
    }
    return min;
  }

  static public Integer min_withNull(Integer a, Integer b) {
    return a == null ? b : b == null ? a : (Integer) min(a, b);
  }

  static public List<String> splitAtMinus(String s) {
    return trimAll(asList(s.split("\\-")));
  }

  static public Integer parseHourAndOptionalMinutesToMinutes(String s) {
    List<String> l = trimAll(splitAtColon(s));
    if (empty(l))
      return null;
    int minute = parseInt(first(l)) * 60;
    if (l(l) > 1)
      minute += parseInt(second(l));
    return minute;
  }

  static public <A> Collection<A> asCollection(Iterable<A> l) {
    return l == null ? null : l instanceof Collection ? ((Collection) l) : asList(l);
  }

  static public <A> A copyFields(Object x, A y, String... fields) {
    if (empty(fields)) {
      Map<String, Object> map = objectToMap(x);
      for (String field : map.keySet()) setOpt(y, field, map.get(field));
    } else
      for (String field : fields) {
        Object o = getOpt(x, field);
        if (o != null)
          setOpt(y, field, o);
      }
    return y;
  }

  static public <A> A copyFields(Object x, A y, Collection<String> fields) {
    return copyFields(x, y, asStringArray(fields));
  }

  static public Map<Class, Constructor> nuEmptyObject_cache = newDangerousWeakHashMap();

  static public <A> A nuEmptyObject(Class<A> c) {
    try {
      Constructor ctr;
      synchronized (nuEmptyObject_cache) {
        ctr = nuEmptyObject_cache.get(c);
        if (ctr == null) {
          nuEmptyObject_cache.put(c, ctr = nuEmptyObject_findConstructor(c));
          makeAccessible(ctr);
        }
      }
      try {
        return (A) ctr.newInstance();
      } catch (InstantiationException e) {
        if (empty(e.getMessage()))
          if ((c.getModifiers() & Modifier.ABSTRACT) != 0)
            throw fail("Can't instantiate abstract class " + className(c), e);
          else
            throw fail("Can't instantiate " + className(c), e);
        else
          throw rethrow(e);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Constructor nuEmptyObject_findConstructor(Class c) {
    for (Constructor m : c.getDeclaredConstructors()) if (m.getParameterTypes().length == 0)
      return m;
    throw fail("No default constructor declared in " + c.getName());
  }

  static public int hashCode(Object a) {
    return a == null ? 0 : a.hashCode();
  }

  static public int indexOfIC_underscore(String a, String b) {
    int la = l(a), lb = l(b);
    if (la < lb)
      return -1;
    int n = la - lb;
    elsewhere: for (int i = 0; i <= n; i++) {
      for (int j = 0; j < lb; j++) {
        char c2 = b.charAt(j);
        if (c2 == '_' || eqic(c2, a.charAt(i + j))) {
        } else
          continue elsewhere;
      }
      return i;
    }
    return -1;
  }

  static public Object dm_os() {
    {
      Object __1 = vm_generalMap_get("stefansOS");
      if (__1 != null)
        return __1;
    }
    return creator();
  }

  static public String dropAfterSubstring(String s, String b) {
    return substring(s, 0, smartIndexOf(s, b));
  }

  static public String jsonEncode_breakAtLevel1(Object o) {
    StringBuilder buf = new StringBuilder();
    jsonEncode_breakAtLevel1(o, buf, 1);
    return str(buf);
  }

  static public void jsonEncode_breakAtLevel1(Object o, StringBuilder buf, int level) {
    if (o == null)
      buf.append("null");
    else if (o instanceof String)
      buf.append(quote((String) o));
    else if (o instanceof Number || o instanceof Boolean)
      buf.append(o);
    else if (o instanceof Map) {
      Map map = (Map) o;
      buf.append("{");
      boolean first = true;
      for (Object key : keys(map)) {
        if (first)
          first = false;
        else
          buf.append(",");
        if (level == 1)
          buf.append("\n  ");
        buf.append(quote((String) key));
        buf.append(":");
        jsonEncode_breakAtLevel1(map.get(key), buf, level + 1);
      }
      if (level == 1)
        buf.append("\n");
      buf.append("}");
    } else if (o instanceof Collection) {
      Collection l = (Collection) o;
      buf.append("[");
      boolean first = true;
      for (Object element : l) {
        if (first)
          first = false;
        else
          buf.append(",");
        if (level == 1)
          buf.append("\n  ");
        jsonEncode_breakAtLevel1(element, buf, level + 1);
      }
      if (level == 1)
        buf.append("\n");
      buf.append("]");
    } else
      throw fail("Unknown object for JSON encoding: " + className(o));
  }

  static public HashSet mapToHashSet(Object f, Iterable l) {
    HashSet x = new HashSet(l(l));
    if (l != null)
      for (Object o : l) x.add(callF(f, o));
    return x;
  }

  static public <A, B> HashSet<B> mapToHashSet(IF1<A, B> f, Iterable<A> l) {
    return mapToHashSet((Object) f, l);
  }

  static public Producer<String> javaTokC_noMLS_iterator(final String s) {
    return javaTokC_noMLS_iterator(s, 0);
  }

  static public Producer<String> javaTokC_noMLS_iterator(final String s, final int startIndex) {
    return new Producer<String>() {

      final public int l = s.length();

      public int i = startIndex;

      public String next() {
        if (i >= l)
          return null;
        int j = i;
        char c, d;
        while (j < l) {
          c = s.charAt(j);
          d = j + 1 >= l ? '\0' : s.charAt(j + 1);
          if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
            ++j;
          else if (c == '/' && d == '*') {
            do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
            j = Math.min(j + 2, l);
          } else if (c == '/' && d == '/') {
            do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
          } else
            break;
        }
        i = j;
        if (i >= l)
          return null;
        c = s.charAt(i);
        d = i + 1 >= l ? '\0' : s.charAt(i + 1);
        if (c == '\'' || c == '"') {
          char opener = c;
          ++j;
          while (j < l) {
            if (s.charAt(j) == opener || s.charAt(j) == '\n') {
              ++j;
              break;
            } else if (s.charAt(j) == '\\' && j + 1 < l)
              j += 2;
            else
              ++j;
          }
        } else if (Character.isJavaIdentifierStart(c))
          do ++j; while (j < l && Character.isJavaIdentifierPart(s.charAt(j)));
        else if (Character.isDigit(c)) {
          do ++j; while (j < l && Character.isDigit(s.charAt(j)));
          if (j < l && s.charAt(j) == 'L')
            ++j;
        } else
          ++j;
        String t = quickSubstring(s, i, j);
        i = j;
        return t;
      }
    };
  }

  static public Producer<String> javaTokC_noMLS_onReader(final BufferedReader r) {
    final class X implements Producer<String> {

      public StringBuilder buf = new StringBuilder();

      public char c, d, e = 'x';

      public X() {
        nc();
        nc();
        nc();
      }

      public void nc() {
        try {
          c = d;
          d = e;
          if (e == '\0')
            return;
          int i = r.read();
          e = i < 0 ? '\0' : i == '\0' ? '_' : (char) i;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public void ncSave() {
        if (c != '\0') {
          buf.append(c);
          nc();
        }
      }

      public String next() {
        while (c != '\0') {
          if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
            nc();
          else if (c == '/' && d == '*') {
            do nc(); while (c != '\0' && !(c == '*' && d == '/'));
            nc();
            nc();
          } else if (c == '/' && d == '/') {
            do nc(); while (c != '\0' && "\r\n".indexOf(c) < 0);
          } else
            break;
        }
        if (c == '\0')
          return null;
        if (c == '\'' || c == '"') {
          char opener = c;
          ncSave();
          while (c != '\0') {
            if (c == opener || c == '\n') {
              ncSave();
              break;
            } else if (c == '\\') {
              ncSave();
              ncSave();
            } else
              ncSave();
          }
        } else if (Character.isJavaIdentifierStart(c))
          do ncSave(); while (Character.isJavaIdentifierPart(c) || c == '\'');
        else if (Character.isDigit(c)) {
          do ncSave(); while (Character.isDigit(c));
          if (c == 'L')
            ncSave();
        } else
          ncSave();
        String t = buf.toString();
        buf.setLength(0);
        return t;
      }
    }
    return new X();
  }

  static public String unquoteUsingCharArray(String s, char[] buf) {
    if (s == null)
      return null;
    if (startsWith(s, '[')) {
      int i = 1;
      while (i < s.length() && s.charAt(i) == '=') ++i;
      if (i < s.length() && s.charAt(i) == '[') {
        String m = s.substring(1, i);
        if (s.endsWith("]" + m + "]"))
          return s.substring(i + 1, s.length() - i - 1);
      }
    }
    if (s.length() > 1) {
      char c = s.charAt(0);
      if (c == '\"' || c == '\'') {
        int l = endsWith(s, c) ? s.length() - 1 : s.length();
        if (l > buf.length)
          return unquote(s);
        int n = 0;
        for (int i = 1; i < l; i++) {
          char ch = s.charAt(i);
          if (ch == '\\') {
            char nextChar = (i == l - 1) ? '\\' : s.charAt(i + 1);
            if (nextChar >= '0' && nextChar <= '7') {
              String code = "" + nextChar;
              i++;
              if ((i < l - 1) && s.charAt(i + 1) >= '0' && s.charAt(i + 1) <= '7') {
                code += s.charAt(i + 1);
                i++;
                if ((i < l - 1) && s.charAt(i + 1) >= '0' && s.charAt(i + 1) <= '7') {
                  code += s.charAt(i + 1);
                  i++;
                }
              }
              buf[n++] = (char) Integer.parseInt(code, 8);
              continue;
            }
            switch(nextChar) {
              case '\"':
                ch = '\"';
                break;
              case '\\':
                ch = '\\';
                break;
              case 'b':
                ch = '\b';
                break;
              case 'f':
                ch = '\f';
                break;
              case 'n':
                ch = '\n';
                break;
              case 'r':
                ch = '\r';
                break;
              case 't':
                ch = '\t';
                break;
              case '\'':
                ch = '\'';
                break;
              case 'u':
                if (i >= l - 5) {
                  ch = 'u';
                  break;
                }
                int code = Integer.parseInt("" + s.charAt(i + 2) + s.charAt(i + 3) + s.charAt(i + 4) + s.charAt(i + 5), 16);
                char[] x = Character.toChars(code);
                int lx = x.length;
                for (int j = 0; j < lx; j++) buf[n++] = x[j];
                i += 5;
                continue;
              default:
                ch = nextChar;
            }
            i++;
          }
          buf[n++] = ch;
        }
        return new String(buf, 0, n);
      }
    }
    return s;
  }

  static public boolean structure_isMarker(String s, int i, int j) {
    if (i >= j)
      return false;
    if (s.charAt(i) != 'm')
      return false;
    ++i;
    while (i < j) {
      char c = s.charAt(i);
      if (c < '0' || c > '9')
        return false;
      ++i;
    }
    return true;
  }

  static public String internIfLongerThan(String s, int l) {
    return s == null ? null : l(s) >= l ? intern(s) : s;
  }

  static public char unquoteCharacter(String s) {
    assertTrue(s.startsWith("'") && s.length() > 1);
    return unquote("\"" + s.substring(1, s.endsWith("'") ? s.length() - 1 : s.length()) + "\"").charAt(0);
  }

  static public BigInteger parseBigInt(String s) {
    return new BigInteger(s);
  }

  static public float parseFloat(String s) {
    return Float.parseFloat(s);
  }

  static public boolean isLongConstant(String s) {
    if (!s.endsWith("L"))
      return false;
    s = s.substring(0, l(s) - 1);
    return isInteger(s);
  }

  static public List parseList(String s) {
    return (List) safeUnstructure(s);
  }

  static public <A> List<A> synchroLinkedList() {
    return Collections.synchronizedList(new LinkedList<A>());
  }

  static public boolean[] boolArrayFromBytes(byte[] a, int n) {
    boolean[] b = new boolean[n];
    int m = min(n, l(a) * 8);
    for (int i = 0; i < m; i++) b[i] = (a[i / 8] & 1 << (i & 7)) != 0;
    return b;
  }

  static public <A> A nuStubInnerObject(Class<A> c) {
    return nuStubInnerObject(c, null);
  }

  static public <A> A nuStubInnerObject(Class<A> c, Object classFinder) {
    try {
      Class outerType = getOuterClass(c, classFinder);
      Constructor m = c.getDeclaredConstructor(outerType);
      makeAccessible(m);
      return (A) m.newInstance(new Object[] { null });
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void setOptAllDyn_pcall(DynamicObject o, Map<String, Object> fields) {
    if (fields == null || o == null)
      return;
    HashMap<String, Field> fieldMap = instanceFieldsMap(o);
    for (Map.Entry<String, Object> e : fields.entrySet()) {
      try {
        String field = e.getKey();
        Object val = e.getValue();
        Field f = fieldMap.get(field);
        if (f != null)
          smartSet(f, o, val);
        else {
          o.fieldValues = syncMapPut2_createLinkedHashMap(o.fieldValues, intern(field), val);
        }
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public void setOptAll_pcall(Object o, Map<String, Object> fields) {
    if (fields == null)
      return;
    for (String field : keys(fields)) try {
      setOpt(o, field, fields.get(field));
    } catch (Throwable __e) {
      print(exceptionToStringShort(__e));
    }
  }

  static public void setOptAll_pcall(Object o, Object... values) {
    warnIfOddCount(values);
    for (int i = 0; i + 1 < l(values); i += 2) {
      String field = (String) values[i];
      Object value = values[i + 1];
      try {
        setOpt(o, field, value);
      } catch (Throwable __e) {
        print(exceptionToStringShort(__e));
      }
    }
  }

  static public void fixOuterRefs(Object o) {
    try {
      if (o == null)
        return;
      Field[] l = thisDollarOneFields(o.getClass());
      if (l.length <= 1)
        return;
      Object father = null;
      for (Field f : l) {
        father = f.get(o);
        if (father != null)
          break;
      }
      if (father == null)
        return;
      for (Field f : l) f.set(o, father);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void setDynObjectValue(DynamicObject o, String field, Object value) {
    o.fieldValues = syncMapPut2_createLinkedHashMap(o.fieldValues, field, value);
  }

  static public String intern(String s) {
    return fastIntern(s);
  }

  static public void pcallOpt_noArgs(Object o, String method) {
    try {
      callOpt_noArgs(o, method);
    } catch (Throwable __e) {
      _handleException(__e);
    }
  }

  static public int[] toIntArray(Collection<Integer> l) {
    int[] a = new int[l(l)];
    int i = 0;
    if (a.length != 0)
      for (int x : l) a[i++] = x;
    return a;
  }

  static public double[] toDoubleArray(Collection<Double> l) {
    double[] a = new double[l(l)];
    int i = 0;
    if (a.length != 0)
      for (double x : l) a[i++] = x;
    return a;
  }

  static public boolean jmatch(String pat, String s) {
    return jmatch(pat, s, null);
  }

  static public boolean jmatch(String pat, String s, Matches matches) {
    if (s == null)
      return false;
    return jmatch(pat, javaTok(s), matches);
  }

  static public boolean jmatch(String pat, List<String> toks) {
    return jmatch(pat, toks, null);
  }

  static public boolean jmatch(String pat, List<String> toks, Matches matches) {
    List<String> tokpat = javaTok(pat);
    String[] m = match2(tokpat, toks);
    if (m == null)
      return false;
    else {
      if (matches != null)
        matches.m = m;
      return true;
    }
  }

  static public boolean warn_on = true;

  static public ThreadLocal<List<String>> warn_warnings = new ThreadLocal();

  static public void warn(String s) {
    if (warn_on)
      print("Warning: " + s);
  }

  static public void warn(String s, List<String> warnings) {
    warn(s);
    if (warnings != null)
      warnings.add(s);
    addToCollection(warn_warnings.get(), s);
  }

  static public Object vmBus_query(String msg, Object... args) {
    Object arg = vmBus_wrapArgs(args);
    {
      Object __1 = pcallFAll_returnFirstNotNull(vm_busListeners_live(), msg, arg);
      if (__1 != null)
        return __1;
    }
    return pcallFAll_returnFirstNotNull(vm_busListenersByMessage_live().get(msg), msg, arg);
  }

  static public Object vmBus_query(String msg) {
    return vmBus_query(msg, (Object) null);
  }

  static public List<String> getJavaModifiers_list = litlist("static", "abstract", "public", "private", "protected", "final", "native", "volatile", "synchronized", "transient");

  static public List<String> getJavaModifiers() {
    return getJavaModifiers_list;
  }

  static public ThreadLocal<Boolean> assertVerbose_value = new ThreadLocal();

  static public void assertVerbose(boolean b) {
    assertVerbose_value.set(b);
  }

  static public boolean assertVerbose() {
    return isTrue(assertVerbose_value.get());
  }

  static public <A> A assertEqualsVerbose(Object x, A y) {
    assertEqualsVerbose((String) null, x, y);
    return y;
  }

  static public <A> A assertEqualsVerbose(String msg, Object x, A y) {
    if (!eq(x, y)) {
      throw fail((msg != null ? msg + ": " : "") + "expected: " + x + ", got: " + y);
    } else
      print("OK" + (empty(msg) ? "" : " " + msg) + ": " + (x));
    return y;
  }

  static public void assertEqualsVerbose(Scorer scorer, Object x, Object y) {
    if (scorer == null) {
      assertEqualsVerbose(x, y);
      return;
    }
    if (!eq(x, y)) {
      print((y) + " != " + (x));
      scorer.add(false);
    } else {
      print("OK: " + (x));
      scorer.add(true);
    }
  }

  static public Cache<Boolean> isLinux_cache = new Cache<>(() -> isLinux_load());

  static public boolean isLinux() {
    return isLinux_cache.get();
  }

  static public Boolean isLinux_load() {
    return !isWindows() && !isMac() && !isAndroid();
  }

  static public boolean isJavaxCompilableSnippetType(int type) {
    return isJavaxCompilableSnippetTypeExceptInclude(type) || type == javaxIncludeSnippetType();
  }

  static public List<File> hotwire_collectJars(File jar) {
    List<String> libIDs = hotwire_libraryIDsFromJar_deleteJarOnFail(jar);
    List<File> files = ll(jar);
    for (String libID : libIDs) files.add(loadLibraryOrSrcLib(libID));
    return files;
  }

  static public Pair<File, String> compileSnippetThroughServer(String progID) {
    String transpiledSrc = getServerTranspiled2(progID);
    String md5 = md5(transpiledSrc + "\n" + progID);
    File jar = CompilerBot.getJarFile(md5);
    if (jar == null || jar.length() <= 22) {
      byte[] jarData = null;
      boolean dontLoad = false;
      IResourceLoader rl = vm_getResourceLoader();
      if (rl != null) {
        dontLoad = true;
        File jar2 = rl.getSnippetJar(progID, transpiledSrc);
        if (jar2 != null)
          return pair(jar2, transpiledSrc);
      }
      if (!dontLoad) {
        try {
          jarData = loadBinaryPage("http://www.botcompany.de/jar/" + psI(progID) + "?md5=" + md5(transpiledSrc));
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
      if (!isJAR(jarData)) {
        if (jarData != null) {
          print(bytesToHex(takeFirstOfByteArray(8, jarData)));
          print("fallback to CompilerBot: " + fromUtf8(takeFirstOfByteArray(80, jarData)));
        }
        return CompilerBot.compileSnippet2(progID);
      }
      saveBinaryFile(jar, jarData);
    }
    return pair(jar, transpiledSrc);
  }

  static public List<File> filesEndingWith(File dir, String suffix) {
    return listFilesWithSuffix(dir, suffix);
  }

  static public List<File> filesEndingWith(List<File> l, String suffix) {
    List<File> out = new ArrayList();
    for (File f : unnull(l)) if (!f.isDirectory() && (empty(suffix) || endsWithIgnoreCase(f.getName(), suffix)))
      out.add(f);
    return out;
  }

  static public List<File> filesEndingWith(String suffix, File dir) {
    return filesEndingWith(dir, suffix);
  }

  static public String addPrefixIfNotEmpty2(String prefix, String s) {
    return empty(s) ? "" : addPrefix(prefix, s);
  }

  static public File toFile(Object o) {
    if (o instanceof File)
      return (File) o;
    if (o instanceof String)
      return new File((String) o);
    throw fail("Not a file: " + o);
  }

  static public File getCanonicalFile(File f) {
    try {
      return f == null ? null : f.getCanonicalFile();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isSymLink(File f) {
    return f != null && Files.isSymbolicLink(toPath(f));
  }

  static public ClassLoader getClassLoader(Object o) {
    return o == null ? null : _getClass(o).getClassLoader();
  }

  static public int parseFirstInt(String s) {
    return parseInt(jextract("<int>", s));
  }

  static public int parseFirstInt(Iterable<String> l) {
    return parseInt(firstIntegerString(l));
  }

  static public String javaVersion() {
    return System.getProperty("java.version");
  }

  static public String defaultVMArgs() {
    return javaxDefaultVMArgs();
  }

  static public void setDefaultVMArgs(String args) {
    String oldArgs = javaxDefaultVMArgs();
    args = trim(args);
    if (neq(unnull(oldArgs), unnull(args))) {
      print();
      print("Changing default VM arguments from");
      print("  " + oldArgs);
      print("to");
      print("  " + args);
      print();
      saveTextFile(javaxDataDir("default-vm-args"), nullIfEmpty(args));
    }
  }

  static public boolean isDollarVar(String s) {
    return startsWith(s, '$') && l(s) > 1;
  }

  static public <A> void listAdd(Collection<A> c, A a) {
    if (c != null)
      c.add(a);
  }

  static public boolean neqGet(List l, int i, Object o) {
    return neq(get(l, i), o);
  }

  static public int tok_findEndOfStatement(List<String> tok, int i) {
    if (eq(get(tok, i), "{"))
      return findEndOfBlock(tok, i);
    int j = i;
    boolean special = false;
    while (j < l(tok) && neq(tok.get(j), ";")) {
      String t = get(tok, j);
      if (eqOneOf(t, "for", "if"))
        special = true;
      if (eqOneOf(t, "{", "(")) {
        j = findEndOfBracketPart(tok, j) + 1;
        if (special && eq(t, "{"))
          return j - 1;
      } else
        j += 2;
    }
    return j + 1;
  }

  static public void tokPrepend_reTok(List<String> tok, int i, String s) {
    tokPrepend(tok, i, s);
    reTok(tok, i, i + 1);
  }

  static public String joinLines(List<String> lines) {
    return fromLines(lines);
  }

  static public String joinLines(String glue, String text) {
    return join(glue, toLines(text));
  }

  static public String javaDropComments(String s) {
    return javaDropAllComments(s);
  }

  static public boolean hasSuperclassShortNamed(Object o, String name) {
    Class c = _getClass(o);
    while (c != null) if (shortClassNameIs(c, name))
      return true;
    else
      c = c.getSuperclass();
    return false;
  }

  static public List<String> dm_moduleIDs() {
    return dm_listModuleIDs();
  }

  static public Object dm_getStem(Object moduleOrID) {
    if (isString(moduleOrID) && isIdentifier(((String) moduleOrID)))
      moduleOrID = dm_getService(((String) moduleOrID));
    if (isStringOrIntOrLong(moduleOrID))
      return dm_getStemByID(moduleOrID);
    return or(getOpt(dm_getModule(moduleOrID), "_host"), moduleOrID);
  }

  static public AlphanumComparator alphaNumComparator_instance;

  static public Comparator<String> alphaNumComparator() {
    if (alphaNumComparator_instance == null)
      alphaNumComparator_instance = new AlphanumComparator();
    return alphaNumComparator_instance;
  }

  static public String nullIfEmpty(String s) {
    return isEmpty(s) ? null : s;
  }

  static public <A, B> Map<A, B> nullIfEmpty(Map<A, B> map) {
    return isEmpty(map) ? null : map;
  }

  static public <A> List<A> nullIfEmpty(List<A> l) {
    return isEmpty(l) ? null : l;
  }

  static public boolean newButton_autoToolTip = true;

  static public JButton newButton(final String text, final Object action) {
    return swing(new F0<JButton>() {

      public JButton get() {
        try {
          String text2 = dropPrefix("[disabled] ", text);
          final JButton btn = new JButton(text2);
          if (l(text2) < l(text))
            btn.setEnabled(false);
          if (newButton_autoToolTip) {
            btn.setToolTipText(btn.getText());
          }
          if (action != null)
            btn.addActionListener(actionListener(action, btn));
          return btn;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "S text2 = dropPrefix(\"[disabled] \", text);\r\n    final JButton btn = new JButt...";
      }
    });
  }

  static public <A> A swingNu(final Class<A> c, final Object... args) {
    return swingConstruct(c, args);
  }

  static public Object[] asArray(List l) {
    return toObjectArray(l);
  }

  static public <A> A[] asArray(Class<A> type, List l) {
    return (A[]) l.toArray((Object[]) Array.newInstance(type, l.size()));
  }

  static public boolean isMenuSeparatorIndicator(Object o) {
    return eqOneOf(o, "***", "---", "===", "");
  }

  static public boolean isRunnableX(Object o) {
    if (o == null)
      return false;
    if (o instanceof String)
      return hasMethod(mc(), (String) o);
    return o instanceof Runnable || hasMethod(o, "get");
  }

  static public boolean jmenuItem_newThreads = false;

  static public JMenuItem jmenuItem(final String text) {
    return jMenuItem(text, null);
  }

  static public JMenuItem jmenuItem(final String text, final Object r) {
    return swing(new F0<JMenuItem>() {

      public JMenuItem get() {
        try {
          Pair<String, Integer> p = jmenu_autoMnemonic(dropPrefix("[disabled] ", text));
          JMenuItem mi = new JMenuItem(p.a);
          if (startsWith(text, "[disabled] "))
            disableMenuItem(mi);
          if (p.b != 0)
            mi.setMnemonic(p.b);
          mi.addActionListener(jmenuItem_newThreads ? actionListenerInNewThread(r) : actionListener(r));
          return mi;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "Pair<S, Int> p = jmenu_autoMnemonic(dropPrefix(\"[disabled] \", text));\r\n    JM...";
      }
    });
  }

  static public <A extends JComponent> A bindLiveValueListenerToComponent(A component, final LiveValue lv, final Runnable listener) {
    if (lv != null)
      bindToComponent(component, new Runnable() {

        public void run() {
          try {
            lv.onChangeAndNow(listener);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "ifdef bindLiveValueListenerToComponent_debug\r\n          print(\"bindLiveValueL...";
        }
      }, new Runnable() {

        public void run() {
          try {
            lv.removeOnChangeListener(listener);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "lv.removeOnChangeListener(listener)";
        }
      });
    return component;
  }

  static public boolean isCurlyBracketed(String s) {
    return isCurlyBraced(s);
  }

  static public <A extends JComponent> A setEnabled(A c, boolean enable) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            c.setEnabled(enable);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "c.setEnabled(enable);";
        }
      });
    }
    return c;
  }

  static public <A extends JComponent> A setEnabled(boolean enable, A c) {
    return setEnabled(c, enable);
  }

  static public String unCurlyBracket(String s) {
    return tok_unCurlyBracket(s);
  }

  static public boolean setText_opt = true;

  static public <A extends JTextComponent> A setText(A c, Object text) {
    setText((JComponent) c, text);
    return c;
  }

  static public <A extends JComboBox> A setText(final A c, Object text) {
    final String s = strUnnull(text);
    {
      swing(new Runnable() {

        public void run() {
          try {
            c.getEditor().setItem(s);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "c.getEditor().setItem(s);";
        }
      });
    }
    return c;
  }

  static public void setText(JLabel c, Object text) {
    setText((JComponent) c, text);
  }

  static public JButton setText(JButton c, Object text) {
    setText((JComponent) c, jlabel_textAsHTML_center_ifNeeded(strUnnull(text)));
    return c;
  }

  static public <A extends JComponent> A setText(final A c, Object text) {
    if (c == null)
      return null;
    final String s = strUnnull(text);
    {
      swing(new Runnable() {

        public void run() {
          try {
            if (!setText_opt || neq(callOpt(c, "getText"), s))
              call(c, "setText", s);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (!setText_opt || neq(callOpt(c, \"getText\"), s))\r\n      call(c, \"setText\", s);";
        }
      });
    }
    return c;
  }

  static public int preferredWidth(Component c) {
    return c == null ? 0 : getPreferredSize(c).width;
  }

  static public String formatDate() {
    return formatDate(now());
  }

  static public String formatDate(long timestamp) {
    return timestamp == 0 ? "-" : str(new Date(timestamp));
  }

  static public String formatDate(long timestamp, String format, TimeZone tz) {
    return simpleDateFormat(format, tz).format(timestamp);
  }

  static public File dirOfFile(File f) {
    return f == null ? null : f.getParentFile();
  }

  static public int localYear() {
    return localYear(now());
  }

  static public int localYear(long time) {
    return parseInt(simpleDateFormat_local("yyyy").format(time));
  }

  static public String padLeft(String s, char c, int n) {
    return rep(c, n - l(s)) + s;
  }

  static public String padLeft(String s, int n) {
    return padLeft(s, ' ', n);
  }

  static public int localMonth(long time) {
    return parseInt(simpleDateFormat_local("MM").format(time));
  }

  static public int localMonth() {
    return localMonth(now());
  }

  static public int localDayOfMonth(long time) {
    return parseInt(simpleDateFormat_local("dd").format(time));
  }

  static public int localDayOfMonth() {
    return localDayOfMonth(now());
  }

  static public String hijackPrint(Object r) {
    final StringBuilder buf = new StringBuilder();
    Object old = interceptPrintInThisThread(new F1<String, Boolean>() {

      public Boolean get(String s) {
        buf.append(s);
        return false;
      }
    });
    try {
      callF(r);
      return str(buf);
    } finally {
      interceptPrintInThisThread(old);
    }
  }

  static public <A extends Iterable> A pnl(String prefix, A l) {
    printNumberedLines(prefix, l);
    return l;
  }

  static public <A extends Iterable> A pnl(A l) {
    printNumberedLines(l);
    return l;
  }

  static public <A extends Map> A pnl(A map) {
    printNumberedLines(map);
    return map;
  }

  static public <A extends Map> A pnl(String prefix, A map) {
    printNumberedLines(prefix, map);
    return map;
  }

  static public <A> A[] pnl(A[] a) {
    printNumberedLines(a);
    return a;
  }

  static public String pnl(String s) {
    printNumberedLines(lines(s));
    return s;
  }

  static public <A> MultiSet<A> pnl(MultiSet<A> ms) {
    pnl(ms == null ? null : ms.asMap());
    return ms;
  }

  static public <A, B> MultiMap<A, B> pnl(MultiMap<A, B> mm) {
    pnl(mm == null ? null : mm.asMap());
    return mm;
  }

  static public <A, B> Map<A, List<B>> multiMapToMap(MultiMap<A, B> m) {
    return m == null ? null : m.data;
  }

  static public <A> A findWhere(Collection<A> c, Object... data) {
    if (c != null)
      for (A x : c) if (checkFields(x, data))
        return x;
    return null;
  }

  static public boolean isOK(String s) {
    s = trim(s);
    return swic(s, "ok ") || eqic(s, "ok") || matchStart("ok", s);
  }

  static public String sendOpt(String bot, String text, Object... args) {
    return sendToLocalBotOpt(bot, text, args);
  }

  static public boolean isMainProgram() {
    return creator() == null;
  }

  static public void cleanKill() {
    cleanKillVM();
  }

  static public String dbBotName(String progIDWithCase) {
    return fsI_flex(progIDWithCase) + " Concepts";
  }

  static public Android3 methodsBot2(String name, final Object receiver, final List<String> exposedMethods) {
    return methodsBot2(name, receiver, exposedMethods, null);
  }

  static public Android3 methodsBot2(String name, final Object receiver, final List<String> exposedMethods, final Lock lock) {
    Android3 android = new Android3();
    android.greeting = name;
    android.console = false;
    android.responder = new Responder() {

      public String answer(String s, List<String> history) {
        return exposeMethods2(receiver, s, exposedMethods, lock);
      }
    };
    return makeBot(android);
  }

  static public List<String> db_standardExposedMethods_list = ll("xlist", "xnew", "xset", "xdelete", "xget", "xclass", "xfullgrab", "xshutdown", "xchangeCount", "xcount");

  static public List<String> db_standardExposedMethods() {
    return db_standardExposedMethods_list;
  }

  static public List<File> listFilesNotDirs(String dir) {
    return listFilesOnly(dir);
  }

  static public List<File> listFilesNotDirs(File... dirs) {
    return listFilesOnly(dirs);
  }

  static public int matcherInt(Matcher m, int i) {
    return parseInt(m.group(i));
  }

  static public long timestampFromYMDH(int y, int m, int d, int h) {
    return new GregorianCalendar(y, m - 1, d, h, 0).getTimeInMillis();
  }

  static public <A> List<A> sortByMap_inPlace(List<A> l, Map<A, ?> map) {
    sort(l, mapComparator(map));
    return l;
  }

  static public boolean defaultAgeBasedBackupRetentionStrategy_shouldKeep(double age, double lastAge) {
    if (age <= 0.5)
      return true;
    if (age <= 7 && age >= lastAge + 1)
      return true;
    if (age <= 28 && age >= lastAge + 7)
      return true;
    if (age >= lastAge + 365.0 / 12)
      return true;
    return false;
  }

  static public String dropFrom(String s, String x) {
    if (s == null)
      return null;
    int i = s.indexOf(x);
    if (i < 0)
      return s;
    return substring(s, 0, i);
  }

  static public boolean directoryIsEmpty(File f) {
    return !fileExists(f) || isDirectory(f) && empty(listFiles(f));
  }

  static public void zip2dir(File inZip, File outDir) {
    zip2dir(inZip, outDir, "");
  }

  static public void zip2dir(File inZip, File outDir, String prefix) {
    try {
      if (prefix.length() != 0 && !prefix.endsWith("/"))
        prefix += "/";
      ZipFile zipFile = new ZipFile(inZip);
      try {
        Enumeration entries = zipFile.entries();
        while (entries.hasMoreElements()) {
          ZipEntry entry = (ZipEntry) entries.nextElement();
          if (entry.isDirectory())
            continue;
          if (!entry.getName().startsWith(prefix))
            continue;
          File outFile = new File(outDir, entry.getName());
          System.out.println("Unzipping " + entry.getName() + " to " + outFile.getAbsolutePath());
          stream2file(zipFile.getInputStream(entry), outFile);
        }
      } finally {
        _close(zipFile);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public RandomAccessFile randomAccessFileForReading(File path) {
    try {
      return newRandomAccessFile(path, "r");
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public long raf_findBeginningOfLine(RandomAccessFile raf, long pos, int bufSize) {
    try {
      byte[] buf = new byte[bufSize];
      while (pos > 0) {
        long start = Math.max(pos - bufSize, 0);
        raf.seek(start);
        raf.readFully(buf, 0, (int) Math.min(pos - start, bufSize));
        int idx = lastIndexOf_byteArray(buf, (byte) '\n');
        if (idx >= 0)
          return start + idx + 1;
        pos = start;
      }
      return 0;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public long raf_findEndOfLine(RandomAccessFile raf, long pos, int bufSize) {
    try {
      byte[] buf = new byte[bufSize];
      long length = raf.length();
      while (pos < length) {
        raf.seek(pos);
        raf.readFully(buf, 0, (int) Math.min(length - pos, bufSize));
        int idx = indexOf_byteArray(buf, (byte) '\n');
        if (idx >= 0)
          return pos + idx + 1;
        pos += bufSize;
      }
      return length;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public byte[] raf_readFilePart(RandomAccessFile raf, long start, int l) {
    try {
      byte[] buf = new byte[l];
      raf.seek(start);
      raf.readFully(buf);
      return buf;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A assertLessThan(A a, A b) {
    assertTrue(cmp(b, a) < 0);
    return b;
  }

  static public <A> A assertBiggerThan(A a, A b) {
    assertTrue(cmp(b, a) > 0);
    return b;
  }

  static public String trimJoinSubList(List<String> l, int i, int j) {
    return trim(join(subList(l, i, j)));
  }

  static public String trimJoinSubList(List<String> l, int i) {
    return trim(join(subList(l, i)));
  }

  static public <A extends JComponent> A componentPopupMenuItem(A c, final String name, final Object action) {
    componentPopupMenu(c, new VF1<JPopupMenu>() {

      public void get(JPopupMenu menu) {
        try {
          addMenuItem(menu, name, action);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "addMenuItem(menu, name, action);";
      }
    });
    return c;
  }

  static public void componentPopupMenuItem(JComponent c, final JMenuItem menuItem) {
    componentPopupMenu(c, new VF1<JPopupMenu>() {

      public void get(JPopupMenu menu) {
        try {
          addMenuItem(menu, menuItem);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "addMenuItem(menu, menuItem);";
      }
    });
  }

  static public Set vm_generalWeakSet(Object name) {
    synchronized (get(javax(), "generalMap")) {
      Set set = (Set) (vm_generalMap_get(name));
      if (set == null)
        vm_generalMap_put(name, set = newWeakHashSet());
      return set;
    }
  }

  static public JPanel jpanel(LayoutManager layout) {
    return swingNu(JPanel.class, layout);
  }

  static public JPanel jpanel() {
    return swingNu(JPanel.class);
  }

  static public LayoutManager layoutManagerFromFunction(final Object layouter) {
    return new AbstractLayoutManager() {

      public void layoutContainer(Container parent) {
        Object size = pcallF(layouter, parent);
        if (size instanceof Dimension)
          preferredSize = ((Dimension) size);
        else if (size instanceof Pair) {
          preferredSize = (Dimension) ((Pair) size).a;
          minimumSize = (Dimension) ((Pair) size).b;
        }
      }
    };
  }

  static public <A extends Container> A addAllComponents(final A c, final List<? extends Component> components) {
    if (nempty(components)) {
      swing(new Runnable() {

        public void run() {
          try {
            for (Component x : components) c.add(x);
            revalidate(c);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "for (Component x : components)\r\n      c.add(x);\r\n    revalidate(c);";
        }
      });
    }
    return c;
  }

  static public <A> A childOfType(Component c, Class<A> theClass) {
    return first(childrenOfType(c, theClass));
  }

  static public <A> A childOfType(Class<A> theClass, Component c) {
    return childOfType(c, theClass);
  }

  static public Rectangle rectangleUnion(Rectangle a, Rectangle b) {
    return a == null ? b : b == null ? a : a.union(b);
  }

  static public boolean isEditableComboBox(final JComboBox cb) {
    return cb != null && swing(new F0<Boolean>() {

      public Boolean get() {
        try {
          return cb.isEditable();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret cb.isEditable();";
      }
    });
  }

  static public void logQuotedWithTime(String s) {
    logQuotedWithTime(standardLogFile(), s);
  }

  static public void logQuotedWithTime(File logFile, String s) {
    logQuoted(logFile, logQuotedWithTime_format(s));
  }

  static public void logQuotedWithTime(String logFile, String s) {
    logQuoted(logFile, logQuotedWithTime_format(s));
  }

  static public String logQuotedWithTime_format(String s) {
    return (now()) + " " + s;
  }

  static public JComponent wrap(Object swingable) {
    return _recordNewSwingComponent(wrap_2(swingable));
  }

  static public JComponent wrap_2(Object swingable) {
    if (swingable == null)
      return null;
    JComponent c;
    if (swingable instanceof Component)
      c = componentToJComponent(((Component) swingable));
    else
      c = componentToJComponent((Component) callOpt(swingable, "swing"));
    if (c instanceof JTable || c instanceof JList || c instanceof JTextArea || c instanceof JEditorPane || c instanceof JTextPane || c instanceof JTree)
      return jscroll(c);
    return c == null ? jlabel(str(swingable)) : c;
  }

  static public JTextArea wrappedTextArea(final JTextArea ta) {
    enableWordWrapForTextArea(ta);
    return ta;
  }

  static public JTextArea wrappedTextArea() {
    return wrappedTextArea(jtextarea());
  }

  static public JTextArea wrappedTextArea(String text) {
    JTextArea ta = wrappedTextArea();
    setText(ta, text);
    return ta;
  }

  static public JScrollPane jscroll(final Component c) {
    return swing(new F0<JScrollPane>() {

      public JScrollPane get() {
        try {
          return new JScrollPane(c);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret new JScrollPane(c);";
      }
    });
  }

  static public int withMargin_defaultWidth = 6;

  static public JPanel withMargin(Component c) {
    return withMargin(withMargin_defaultWidth, c);
  }

  static public JPanel withMargin(int w, Component c) {
    return withMargin(w, w, c);
  }

  static public JPanel withMargin(int w, int h, Component c) {
    return withMargin(w, h, w, h, c);
  }

  static public JPanel withMargin(final int top, final int left, final int bottom, final int right, final Component c) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel p = new JPanel(new BorderLayout());
          p.setBorder(BorderFactory.createEmptyBorder(top, left, bottom, right));
          p.add(c);
          return p;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel p = new JPanel(new BorderLayout);\r\n    p.setBorder(BorderFactory.creat...";
      }
    });
  }

  static public boolean vmBus_anyFalse(String msg, Object... args) {
    return contains(vmBus_queryAll(msg, args), false);
  }

  static public String getSnippetTitleOpt(String s) {
    return isSnippetID(s) ? getSnippetTitle(s) : s;
  }

  static public JInternalFrame showForm_makeInternalFrame(JDesktopPane desktop, String title, JPanel panel) {
    JInternalFrame f = addInternalFrame(desktop, title, withMargin(panel));
    minInternalFrameWidth(f, 400);
    packInternalFrameVertically(f);
    centerInternalFrame(f);
    return f;
  }

  static public JFrame handleEscapeKey(final JFrame frame) {
    KeyStroke stroke = KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0);
    frame.getRootPane().registerKeyboardAction(new ActionListener() {

      public void actionPerformed(ActionEvent actionEvent) {
        frame.dispose();
      }
    }, stroke, JComponent.WHEN_IN_FOCUSED_WINDOW);
    return frame;
  }

  static public JFrame minFrameWidth(JFrame frame, int w) {
    if (frame != null && frame.getWidth() < w)
      frame.setSize(w, frame.getHeight());
    return frame;
  }

  static public JFrame minFrameWidth(int w, JFrame frame) {
    return minFrameWidth(frame, w);
  }

  static public JFrame showPackedFrame(String title, Component contents) {
    return packFrame(showFrame(title, contents));
  }

  static public JFrame showPackedFrame(Component contents) {
    return packFrame(showFrame(contents));
  }

  static public int showForm_leftWidth_safetyMargin = 10;

  static public int showForm_leftWidth(List<List<JComponent>> l) {
    forEachLevel2(l, x -> vmBus_send("updateLayoutNow", x));
    int minW = 0;
    for (List<JComponent> row : l) minW = max(minW, getMinimumSize(first(row)).width);
    return minW + or((Integer) vmBus_query("formSafetyMargin"), showForm_leftWidth_safetyMargin);
  }

  static public JPanel westAndCenter(final Component w, final Component c) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel panel = new JPanel(new BorderLayout());
          panel.add(BorderLayout.WEST, wrap(w));
          panel.add(BorderLayout.CENTER, wrap(c));
          return panel;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel panel = new JPanel(new BorderLayout);\r\n    panel.add(BorderLayout.WEST...";
      }
    });
  }

  static public int withRightMargin_defaultWidth = 6;

  static public JPanel withRightMargin(Component c) {
    return withRightMargin(withRightMargin_defaultWidth, c);
  }

  static public JPanel withRightMargin(final int w, final Component c) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel p = new JPanel(new BorderLayout());
          p.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, w));
          p.add(c);
          return p;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel p = new JPanel(new BorderLayout);\r\n    p.setBorder(BorderFactory.creat...";
      }
    });
  }

  static public <A extends Component> A jMinWidthAtLeast(int w, final A c) {
    if (c == null)
      return null;
    return swing(new F0<A>() {

      public A get() {
        try {
          Dimension size = c.getMinimumSize();
          Dimension d = new Dimension(max(w, size.width), size.height);
          c.setMinimumSize(d);
          return jPreferWidth(d.width, c);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "Dimension size = c.getMinimumSize();\r\n    Dimension d = new Dimension(max(w, ...";
      }
    });
  }

  static public void setComponentID(Component c, String id) {
    if (c != null)
      componentID_map.put(c, id);
  }

  static public List mapLL(Object f, Object... data) {
    return map(f, ll(data));
  }

  static public Component wrapForSmartAdd(Object o) {
    if (o == null)
      return jpanel();
    if (o instanceof String)
      return jlabel((String) o);
    return wrap(o);
  }

  static public Map<String, String> humanizeFormLabel_replacements = litmap("id", "ID", "md5", "MD5");

  static public String humanizeFormLabel(String s) {
    if (containsSpace(s))
      return s;
    return firstToUpper(joinWithSpace(replaceElementsUsingMap(splitCamelCase(s), humanizeFormLabel_replacements)).replace("I D", "ID"));
  }

  static public boolean isRunnable(Object o) {
    return o instanceof Runnable || hasMethod(o, "get");
  }

  static public void disposeInternalFrame(Component c) {
    final JInternalFrame f = getInternalFrame(c);
    if (f != null) {
      swing(new Runnable() {

        public void run() {
          try {
            vmBus_send("disposingInternalFrame", f);
            f.dispose();
            setOpt(f, "lastFocusOwner", null);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "vmBus_send disposingInternalFrame(f);\r\n    f.dispose();\r\n    setOpt(f, lastFo...";
        }
      });
    }
  }

  static public void disposeFrame(final Component c) {
    disposeWindow(c);
  }

  static public void onEnterInAllTextFields(JComponent c, Object action) {
    if (action == null)
      return;
    for (Component tf : allChildren(c)) onEnterIfTextField(tf, action);
  }

  static public void onEnterInAllTextFields(List c, Object action) {
    for (Object o : unnull(c)) if (o instanceof JComponent)
      onEnterInAllTextFields((JComponent) o, action);
  }

  static public void clickButton(final JButton b) {
    if (b != null) {
      swing(new Runnable() {

        public void run() {
          try {
            if (b.isEnabled())
              b.doClick();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (b.isEnabled())\r\n      b.doClick();";
        }
      });
    }
  }

  static public <A extends JComponent> A makeBold(final A c) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            c.setFont(c.getFont().deriveFont(java.awt.Font.BOLD));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "c.setFont(c.getFont().deriveFont(java.awt.Font.BOLD));";
        }
      });
    }
    return c;
  }

  static public JPanel smartAddWithLayout(JPanel panel, Object layout, List parts) {
    for (Object o : parts) panel.add(wrapForSmartAdd(o), layout);
    return panel;
  }

  static public JPanel smartAddWithLayout(JPanel panel, Object layout, Object... parts) {
    return smartAddWithLayout(panel, layout, asList(flattenArray2(parts)));
  }

  static public Component jrigid() {
    return javax.swing.Box.createRigidArea(new Dimension(0, 0));
  }

  static public <A> List<A> childrenOfType(Component c, Class<A> theClass) {
    List<A> l = new ArrayList();
    scanForComponents(c, theClass, l);
    return l;
  }

  static public <A> List<A> childrenOfType(Class<A> theClass, Component c) {
    return childrenOfType(c, theClass);
  }

  static public JButton findButton(Component c, String name) {
    for (JButton b : childrenOfType(c, JButton.class)) if (eq(b.getText(), name))
      return b;
    for (JButton b : childrenOfType(getFrame(c), JButton.class)) if (eq(b.getText(), name))
      return b;
    return null;
  }

  static public JButton findButton(Component c) {
    return childOfType(c, JButton.class);
  }

  static public boolean isSpace(char c) {
    return " \t\r\n".indexOf(c) >= 0;
  }

  static public boolean isLetterOrDigit(char c) {
    return Character.isLetterOrDigit(c);
  }

  static public <A> Set<A> cloneSet(Set<A> set) {
    if (set == null)
      return new HashSet();
    synchronized (collectionMutex(set)) {
      Set<A> s = similarEmptySet(set);
      s.addAll(set);
      return s;
    }
  }

  static public int levenWithSwapsIC(String s, String t) {
    if (s.equals(t))
      return 0;
    int ls = s.length(), lt = t.length();
    if (ls == 0)
      return lt;
    if (lt == 0)
      return ls;
    int[] vx = new int[lt + 1];
    int[] v0 = new int[lt + 1];
    int[] v1 = new int[lt + 1];
    for (int i = 0; i < v0.length; i++) v0[i] = i;
    for (int i = 0; i < ls; i++) {
      v1[0] = i + 1;
      for (int j = 0; j < lt; j++) {
        int cost = equalsIgnoreCase(s.charAt(i), t.charAt(j)) ? 0 : 1;
        int d = min3(v1[j] + 1, v0[j + 1] + 1, v0[j] + cost);
        if (i > 0 && j > 0 && equalsIgnoreCase(s.charAt(i), t.charAt(j - 1)) && equalsIgnoreCase(s.charAt(i - 1), t.charAt(j)))
          d = min(d, vx[j - 1] + 1);
        v1[j + 1] = d;
      }
      int[] v = vx;
      vx = v0;
      v0 = v1;
      v1 = v;
    }
    return v0[lt];
  }

  static public Map<Component, String> componentID_map = weakHashMap();

  static public String componentID(Component c) {
    return c == null ? null : componentID_map.get(c);
  }

  static public Object safeUnstructure(String s) {
    return unstructure(s, true);
  }

  static public Class getOuterClass(Class c) {
    return getOuterClass(c, null);
  }

  static public Class getOuterClass(Class c, Object classFinder) {
    try {
      String s = c.getName();
      int i = s.lastIndexOf('$');
      String name = substring(s, 0, i);
      if (classFinder != null)
        return (Class) callF(classFinder, name);
      return Class.forName(name);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public HashMap<String, Field> instanceFieldsMap(Object o) {
    Class c = o.getClass();
    HashMap<String, Field> map;
    synchronized (getOpt_cache) {
      map = getOpt_cache.get(c);
      if (map == null)
        map = getOpt_makeCache(c);
    }
    return map;
  }

  static public <A, B> LinkedHashMap<A, B> syncMapPut2_createLinkedHashMap(LinkedHashMap<A, B> map, A key, B value) {
    if (key != null)
      if (value != null) {
        if (map == null)
          map = new LinkedHashMap();
        synchronized (collectionMutex(map)) {
          map.put(key, value);
        }
      } else if (map != null)
        synchronized (collectionMutex(map)) {
          map.remove(key);
        }
    return map;
  }

  static public Map<Class, Field[]> thisDollarOneFields_cache = newDangerousWeakHashMap();

  static public Field[] thisDollarOneFields(Class c) {
    synchronized (thisDollarOneFields_cache) {
      Field[] l = thisDollarOneFields_cache.get(c);
      if (l == null)
        thisDollarOneFields_cache.put(c, l = thisDollarOneFields_uncached(c));
      return l;
    }
  }

  static public Field[] thisDollarOneFields_uncached(Class c) {
    List<Field> fields = new ArrayList();
    do {
      for (Field f : c.getDeclaredFields()) if (f.getName().equals("this$1"))
        fields.add(makeAccessible(f));
      c = c.getSuperclass();
    } while (c != null);
    return toArray(new Field[l(fields)], fields);
  }

  static public Method fastIntern_method;

  static public String fastIntern(String s) {
    try {
      if (s == null)
        return null;
      if (fastIntern_method == null) {
        fastIntern_method = findMethodNamed(javax(), "internPerProgram");
        if (fastIntern_method == null)
          upgradeJavaXAndRestart();
      }
      return (String) fastIntern_method.invoke(null, s);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Map<Class, HashMap<String, Method>> callOpt_noArgs_cache = newDangerousWeakHashMap();

  static public Object callOpt_noArgs(Object o, String method) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class)
        return callOpt(o, method);
      Class c = o.getClass();
      HashMap<String, Method> map;
      synchronized (callOpt_noArgs_cache) {
        map = callOpt_noArgs_cache.get(c);
        if (map == null)
          map = callOpt_noArgs_makeCache(c);
      }
      Method m = map.get(method);
      return m != null ? m.invoke(o) : null;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public HashMap<String, Method> callOpt_noArgs_makeCache(Class c) {
    HashMap<String, Method> map = new HashMap();
    Class _c = c;
    do {
      for (Method m : c.getDeclaredMethods()) if (m.getParameterTypes().length == 0 && !reflection_isForbiddenMethod(m)) {
        makeAccessible(m);
        String name = m.getName();
        if (!map.containsKey(name))
          map.put(name, m);
      }
      _c = _c.getSuperclass();
    } while (_c != null);
    callOpt_noArgs_cache.put(c, map);
    return map;
  }

  static public <A> boolean addToCollection(Collection<A> c, A a) {
    return c != null && c.add(a);
  }

  static public Object pcallFAll_returnFirstNotNull(Collection l, Object... args) {
    if (l != null)
      for (Object f : cloneList(l)) {
        Object __1 = pcallF(f, args);
        if (__1 != null)
          return __1;
      }
    return null;
  }

  static public Object pcallFAll_returnFirstNotNull(Iterator it, Object... args) {
    while (it.hasNext()) {
      Object __2 = pcallF(it.next(), args);
      if (__2 != null)
        return __2;
    }
    return null;
  }

  public static boolean isWindows() {
    return System.getProperty("os.name").contains("Windows");
  }

  static public boolean isMac() {
    return System.getProperty("os.name").toLowerCase().contains("mac");
  }

  static public boolean isJavaxCompilableSnippetTypeExceptInclude(int type) {
    return isJavaxApplicationSnippetType(type) || isJavaxModuleSnippetType(type) || type == snippetType_dynModule();
  }

  static public int javaxIncludeSnippetType() {
    return 42;
  }

  static public List<String> hotwire_libraryIDsFromJar_deleteJarOnFail(File jar) {
    try {
      return hotwire_libraryIDsFromJar(jar);
    } catch (Throwable _e) {
      jar.delete();
      throw rethrow(_e);
    }
  }

  static public byte[] isJAR_magic = bytesFromHex("504B0304");

  static public boolean isJAR(byte[] data) {
    return byteArrayStartsWith(data, isJAR_magic);
  }

  static public boolean isJAR(File f) {
    return isJAR(loadBeginningOfBinaryFile(f, l(isJAR_magic)));
  }

  static public byte[] takeFirstOfByteArray(byte[] b, int n) {
    return subByteArray(b, 0, n);
  }

  static public byte[] takeFirstOfByteArray(int n, byte[] b) {
    return takeFirstOfByteArray(b, n);
  }

  static public List<File> listFilesWithSuffix(File dir, String suffix) {
    List<File> l = new ArrayList();
    for (File f : listFiles(dir)) if (!f.isDirectory() && (empty(suffix) || endsWithIgnoreCase(f.getName(), suffix)))
      l.add(f);
    return l;
  }

  static public Path toPath(File f) {
    return f == null ? null : f.toPath();
  }

  static public String firstIntegerString(Iterable<String> c) {
    Iterator<String> it = c.iterator();
    while (it.hasNext()) {
      String s = it.next();
      if (isInteger(s))
        return s;
    }
    return null;
  }

  static public String javaxDefaultVMArgs() {
    File fileNew, fileOld;
    String text = loadTextFile(fileNew = javaxDataDir("default-vm-args"));
    if (text == null) {
      text = loadTextFile(fileOld = programFile("#1005850", "default-vm-args"));
      if (text != null)
        moveFile(fileOld, fileNew);
    }
    return trim(unnull(text));
  }

  static public void tokPrepend(List<String> tok, String s) {
    tokPrepend(tok, 0, s);
  }

  static public void tokPrepend(List<String> tok, int i, String s) {
    tok.set(i, s + tok.get(i));
  }

  static public String javaDropAllComments(String s) {
    return join(javaDropAllComments(javaTok(s)));
  }

  static public List<String> javaDropAllComments(List<String> tok) {
    for (int i = 0; i < l(tok); i += 2) tok.set(i, tok_javaDropCommentsFromWhitespace(tok.get(i)));
    return tok;
  }

  static public boolean shortClassNameIs(Object o, String name) {
    return eq(shortClassName(o), name);
  }

  static public boolean shortClassNameIs(String name, Object o) {
    return shortClassNameIs(o, name);
  }

  static public List<String> dm_listModuleIDs() {
    return map("dm_moduleID", dm_listStems());
  }

  static public Object dm_getStemByID(Object id) {
    return dm_callOS("getModuleByID", str(id));
  }

  static public boolean isEmpty(Collection c) {
    return c == null || c.isEmpty();
  }

  static public boolean isEmpty(CharSequence s) {
    return s == null || s.length() == 0;
  }

  static public boolean isEmpty(Object[] a) {
    return a == null || a.length == 0;
  }

  static public boolean isEmpty(byte[] a) {
    return a == null || a.length == 0;
  }

  static public boolean isEmpty(Map map) {
    return map == null || map.isEmpty();
  }

  static public <A> A swingConstruct(final Class<A> c, final Object... args) {
    return swing(new F0<A>() {

      public A get() {
        try {
          return nuObject(c, args);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret nuObject(c, args);";
      }
    });
  }

  static public JMenuItem jMenuItem(final String text) {
    return jmenuItem(text);
  }

  static public JMenuItem jMenuItem(String text, Object r) {
    return jmenuItem(text, r);
  }

  static public Pair<String, Integer> jmenu_autoMnemonic(String s) {
    int i = indexOf(s, '&');
    if (i >= 0 && i < l(s) && isLetterOrDigit(s.charAt(i + 1)))
      return pair(substring(s, 0, i) + substring(s, i + 1), (int) s.charAt(i + 1));
    return pair(s, 0);
  }

  static public JMenuItem disableMenuItem(final JMenuItem mi) {
    if (mi != null) {
      swing(new Runnable() {

        public void run() {
          try {
            mi.setEnabled(false);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "mi.setEnabled(false);";
        }
      });
    }
    return mi;
  }

  static public ActionListener actionListenerInNewThread(final Object runnable) {
    return actionListenerInNewThread(runnable, null);
  }

  static public ActionListener actionListenerInNewThread(final Object runnable, final Object instanceToHold) {
    if (runnable instanceof ActionListener)
      return (ActionListener) runnable;
    return new java.awt.event.ActionListener() {

      public void actionPerformed(java.awt.event.ActionEvent _evt) {
        try {
          startThread("Action Listener", new Runnable() {

            public void run() {
              try {
                AutoCloseable __1 = holdInstance(instanceToHold);
                try {
                  callF(runnable);
                } finally {
                  _close(__1);
                }
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "AutoCloseable __1 = holdInstance(instanceToHold); try {\r\n      callF(runnable...";
            }
          });
        } catch (Throwable __e) {
          messageBox(__e);
        }
      }
    };
  }

  static public String strUnnull(Object o) {
    return o == null ? "" : str(o);
  }

  static public String jlabel_textAsHTML_center_ifNeeded(String text) {
    if (swic(text, "<html>") && ewic(text, "</html>"))
      return text;
    if (!containsNewLines(text))
      return text;
    return jlabel_textAsHTML_center(text);
  }

  static public Dimension getPreferredSize(final Component c) {
    return c == null ? null : swing(new F0<Dimension>() {

      public Dimension get() {
        try {
          return c.getPreferredSize();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret c.getPreferredSize();";
      }
    });
  }

  static public void printNumberedLines(Map map) {
    printNumberedLines(mapToLines(map));
  }

  static public void printNumberedLines(String prefix, Map map) {
    printNumberedLines(prefix, mapToLines(map));
  }

  static public <A extends Iterable> A printNumberedLines(A l) {
    int i = 0;
    if (l != null)
      for (Object a : l) print((++i) + ". " + str(a));
    return l;
  }

  static public <A extends Iterable> A printNumberedLines(String prefix, A l) {
    int i = 0;
    if (l != null)
      for (Object a : l) print(prefix + (++i) + ". " + str(a));
    return l;
  }

  static public void printNumberedLines(Object[] l) {
    printNumberedLines(asList(l));
  }

  static public void printNumberedLines(Object o) {
    printNumberedLines(lines(str(o)));
  }

  static public boolean checkFields(Object x, Object... data) {
    for (int i = 0; i < l(data); i += 2) if (neq(getOpt(x, (String) data[i]), data[i + 1]))
      return false;
    return true;
  }

  static public void cleanKillVM() {
    try {
      ping();
      assertNotOnAWTThread();
      cleanKillVM_noSleep();
      Object o = new Object();
      synchronized (o) {
        o.wait();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void cleanKillVM_noSleep() {
    call(getJavaX(), "cleanKill");
  }

  static public String fsI_flex(String s) {
    return startsWithDigit(s) ? "#" + s : s;
  }

  static public boolean exposeMethods2_debug = false;

  static public String exposeMethods2(Object receiver, String s, List<String> methodNames) {
    return exposeMethods2(receiver, s, methodNames, null);
  }

  static public String exposeMethods2(Object receiver, String s, List<String> methodNames, Lock lock) {
    Matches m = new Matches();
    if (exposeMethods2_debug)
      print("Received: " + s);
    if (match("call *", s, m)) {
      List l;
      if (isIdentifier(m.unq(0)))
        l = ll(m.unq(0));
      else
        l = (List) unstructure(m.unq(0));
      String method = getString(l, 0);
      if (!contains(methodNames, method))
        throw fail("Method not allowed: " + method);
      if (lock != null)
        lock.lock();
      try {
        if (exposeMethods2_debug)
          print("Calling: " + method);
        Object o = call(receiver, method, asObjectArray(subList(l, 1)));
        if (exposeMethods2_debug)
          print("Got: " + getClassName(o));
        return ok2(structure(o));
      } finally {
        if (lock != null)
          lock.unlock();
      }
    }
    if (match("list methods", s))
      return ok2(structure(methodNames));
    return null;
  }

  static public int makeBot(String greeting) {
    return makeAndroid3(greeting).port;
  }

  static public Android3 makeBot(Android3 a) {
    makeAndroid3(a);
    return a;
  }

  static public Android3 makeBot(String greeting, Object responder) {
    Android3 a = new Android3(greeting);
    a.responder = makeResponder(responder);
    makeBot(a);
    return a;
  }

  static public Android3 makeBot() {
    return makeAndroid3(defaultBotName());
  }

  static public List<File> listFilesOnly(String dir) {
    return listFilesOnly(new File(dir));
  }

  static public List<File> listFilesOnly(File... dirs) {
    return concatMap(rcurry("listFilesWithSuffix", ""), dirs);
  }

  static public <A, B> Comparator<A> mapComparator(final Map<A, B> map) {
    return new Comparator<A>() {

      public int compare(A a, A b) {
        return cmp(map.get(a), map.get(b));
      }
    };
  }

  static public boolean isDirectory(File f) {
    return f != null && f.isDirectory();
  }

  static public boolean isDirectory(String path) {
    return path != null && isDirectory(newFile(path));
  }

  static public void stream2file(InputStream in, File out) {
    try {
      mkdirsForFile(out);
      FileOutputStream fos = new FileOutputStream(out);
      copyStream(in, fos);
      in.close();
      fos.close();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int lastIndexOf_byteArray(byte[] a, byte b) {
    for (int i = l(a) - 1; i >= 0; i--) if (a[i] == b)
      return i;
    return -1;
  }

  static public int indexOf_byteArray(byte[] a, byte b) {
    int n = l(a);
    for (int i = 0; i < n; i++) if (a[i] == b)
      return i;
    return -1;
  }

  static public void addMenuItem(JPopupMenu menu, String text, Object action) {
    menu.add(jmenuItem(text, action));
  }

  static public void addMenuItem(JPopupMenu menu, JMenuItem menuItem) {
    menu.add(menuItem);
  }

  static public void addMenuItem(JMenu menu, String text, Object action) {
    menu.add(jmenuItem(text, action));
  }

  static public void addMenuItem(Menu menu, String text, Object action) {
    menu.add(menuItem(text, action));
  }

  static public void addMenuItem(JMenu menu, JMenuItem menuItem) {
    menu.add(menuItem);
  }

  static public File standardLogFile() {
    return getProgramFile("log");
  }

  static public <A extends Component> A _recordNewSwingComponent(A c) {
    if (c != null)
      callF((Object) vm_generalMap_get("newSwingComponentRegistry"), (Object) c);
    return c;
  }

  static public JComponent componentToJComponent(Component c) {
    if (c instanceof JComponent)
      return (JComponent) c;
    if (c instanceof JFrame)
      return ((JFrame) c).getRootPane();
    if (c == null)
      return null;
    throw fail("boohoo " + getClassName(c));
  }

  static public JLabel jlabel(final String text) {
    return swingConstruct(BetterLabel.class, text);
  }

  static public JLabel jlabel() {
    return jlabel(" ");
  }

  static public JTextArea enableWordWrapForTextArea(JTextArea ta) {
    return enableWordWrapForTextArea(ta, true);
  }

  static public JTextArea enableWordWrapForTextArea(JTextArea ta, boolean enabled) {
    if (ta != null) {
      swing(new Runnable() {

        public void run() {
          try {
            ta.setLineWrap(enabled);
            ta.setWrapStyleWord(true);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "ta.setLineWrap(enabled);\r\n    ta.setWrapStyleWord(true);\r\n    // Haven't foun...";
        }
      });
    }
    return ta;
  }

  static public JTextArea jtextarea() {
    return jTextArea();
  }

  static public JTextArea jtextarea(String text) {
    return jTextArea(text);
  }

  static public List vmBus_queryAll(String msg, Object... args) {
    Object arg = vmBus_wrapArgs(args);
    List out = new ArrayList();
    for (Object o : unnull(vm_busListeners_live())) addIfNotNull(out, pcallF(o, msg, arg));
    for (Object o : unnull(vm_busListenersByMessage_live().get(msg))) addIfNotNull(out, pcallF(o, msg, arg));
    return out;
  }

  static public String getSnippetTitle(String id) {
    if (id == null)
      return null;
    if (!isSnippetID(id))
      return "?";
    IResourceLoader rl = vm_getResourceLoader();
    if (rl != null)
      return rl.getSnippetTitle(id);
    return getSnippetTitle_noResourceLoader(id);
  }

  static public String getSnippetTitle_noResourceLoader(String id) {
    try {
      if (isLocalSnippetID(id))
        return localSnippetTitle(id);
      long parsedID = parseSnippetID(id);
      String url;
      if (isImageServerSnippet(parsedID))
        url = imageServerURL() + "title/" + parsedID + muricaCredentialsQuery();
      else if (isGeneralFileServerSnippet(parsedID))
        url = "http://butter.botcompany.de:8080/files/name/" + parsedID;
      else
        url = tb_mainServer() + "/tb-int/getfield.php?id=" + parsedID + "&field=title" + standardCredentials_noCookies();
      String title = trim(loadPageSilently(url));
      if (title != null)
        try {
          saveTextFileIfChanged(snippetTitle_cacheFile(id), title);
        } catch (Throwable __e) {
          print(exceptionToStringShort(__e));
        }
      return or(title, "?");
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String getSnippetTitle(long id) {
    return getSnippetTitle(fsI(id));
  }

  static public ThreadLocal<Boolean> addInternalFrame_dontSelect = new ThreadLocal();

  static public ThreadLocal<Integer> addInternalFrame_layer = new ThreadLocal();

  static public ThreadLocal<Boolean> addInternalFrame_toBack = new ThreadLocal();

  static public JInternalFrame addInternalFrame(final JDesktopPane desktop, final String title, final int x, final int y, final int w, final int h) {
    return addInternalFrame(desktop, title, x, y, w, h, null);
  }

  static public JInternalFrame addInternalFrame(final JDesktopPane desktop, final String title, final int x, final int y, final int w, final int h, final Component contents) {
    return addInternalFrame(desktop, title, rect(x, y, w, h), contents);
  }

  static public JInternalFrame addInternalFrame(final JDesktopPane desktop, final String title, final Component contents) {
    return addInternalFrame(desktop, title, null, contents);
  }

  static public JInternalFrame addInternalFrame(final JDesktopPane desktop, final String title, final Rect r, final Component contents) {
    final boolean dontSelect = isTrue(optParam(addInternalFrame_dontSelect));
    final boolean toBack = isTrue(optParam(addInternalFrame_toBack));
    final Integer layer = optParam(addInternalFrame_layer);
    return swing(new F0<JInternalFrame>() {

      public JInternalFrame get() {
        try {
          JInternalFrame frame;
          if (contents instanceof JInternalFrame)
            frame = (JInternalFrame) contents;
          else {
            frame = jInternalFrame(title);
            setInternalFrameContents(frame, contents);
          }
          frame.setVisible(true);
          desktop.add(frame, layer);
          if (r != null)
            setBounds(frame, r);
          else
            internalFrameDefaultPosition(frame);
          if (dontSelect)
            if (toBack)
              frame.toBack();
            else
              frame.toFront();
          else
            frame.setSelected(true);
          return fixInternalFrame(frame);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JInternalFrame frame;\r\n    if (contents instanceof JInternalFrame)\r\n      fra...";
      }
    });
  }

  static public JInternalFrame addInternalFrame(JDesktopPane desktop, String title) {
    return addInternalFrame(desktop, title, jpanel());
  }

  static public JInternalFrame minInternalFrameWidth(final JInternalFrame frame, final int w) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            if (frame != null && frame.getWidth() < w)
              frame.setSize(w, frame.getHeight());
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (frame != null && frame.getWidth() < w)\r\n      frame.setSize(w, frame.getH...";
        }
      });
    }
    return frame;
  }

  static public JInternalFrame minInternalFrameWidth(int w, JInternalFrame frame) {
    return minInternalFrameWidth(frame, w);
  }

  static public <A extends Component> A packInternalFrameVertically(A c) {
    return packInternalFrameVertically(-1, c);
  }

  static public <A extends Component> A packInternalFrameVertically(int width, A c) {
    final JInternalFrame win = getInternalFrame(c);
    if (win == null)
      return c;
    final int w = width < 0 ? win.getWidth() : width;
    {
      swing(new Runnable() {

        public void run() {
          try {
            win.pack();
            win.setSize(w, win.getHeight());
            fixInternalFrame(win);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "win.pack();\r\n    win.setSize(w, win.getHeight());\r\n    fixInternalFrame(win);";
        }
      });
    }
    return c;
  }

  static public JInternalFrame centerInternalFrame(final JInternalFrame f) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            Container c = f.getParent();
            if (c != null) {
              f.setLocation((c.getWidth() - f.getWidth()) / 2, (c.getHeight() - f.getHeight()) / 2);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "Container c = f.getParent();\r\n    if (c != null) {\r\n      //print(\"Container ...";
        }
      });
    }
    return f;
  }

  static public JInternalFrame centerInternalFrame(final int w, final int h, final JInternalFrame f) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            f.setSize(w, h);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "f.setSize(w, h);";
        }
      });
    }
    return centerInternalFrame(f);
  }

  static public int packFrame_minw = 150, packFrame_minh = 50;

  static public <A extends Component> A packFrame(final A c) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            Window w = getWindow(c);
            if (w != null) {
              w.pack();
              int maxW = getScreenWidth() - 50, maxH = getScreenHeight() - 50;
              w.setSize(min(maxW, max(w.getWidth(), packFrame_minw)), min(maxH, max(w.getHeight(), packFrame_minh)));
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "Window w = getWindow(c);\r\n    if (w != null) {\r\n      w.pack();\r\n      int ma...";
        }
      });
    }
    return c;
  }

  static public JFrame packFrame(ButtonGroup g) {
    return packFrame(getFrame(g));
  }

  static public JFrame showFrame() {
    return makeFrame();
  }

  static public JFrame showFrame(Object content) {
    return makeFrame(content);
  }

  static public JFrame showFrame(String title) {
    return makeFrame(title);
  }

  static public JFrame showFrame(String title, Object content) {
    return makeFrame(title, content);
  }

  static public JFrame showFrame(final JFrame f) {
    if (f != null) {
      swing(new Runnable() {

        public void run() {
          try {
            if (frameTooSmall(f))
              frameStandardSize(f);
            if (!f.isVisible())
              f.setVisible(true);
            if (f.getState() == Frame.ICONIFIED)
              f.setState(Frame.NORMAL);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (frameTooSmall(f)) frameStandardSize(f);\r\n    if (!f.isVisible()) f.setVis...";
        }
      });
    }
    return f;
  }

  static public JFrame showFrame(String title, Object content, JFrame frame) {
    if (frame == null)
      return showFrame(title, content);
    else {
      frame.setTitle(title);
      setFrameContents(frame, content);
      return frame;
    }
  }

  static public <A, B extends Collection<A>> void forEachLevel2(Iterable<B> l, IVF1<A> f) {
    if (l != null)
      for (B b : l) forEach(b, f);
  }

  static public <A, B extends Collection<A>> void forEachLevel2(IVF1<A> f, Iterable<B> l) {
    forEachLevel2(f, l);
  }

  static public Dimension getMinimumSize(final Component c) {
    return c == null ? null : swing(new F0<Dimension>() {

      public Dimension get() {
        try {
          return c.getMinimumSize();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret c.getMinimumSize();";
      }
    });
  }

  static public <A extends Component> A jPreferWidth(int w, A c) {
    Dimension size = c.getPreferredSize();
    c.setPreferredSize(new Dimension(w, size.height));
    return c;
  }

  static public boolean containsSpace(String s) {
    return containsSpaces(s);
  }

  static public <A> List<A> replaceElementsUsingMap(Iterable<A> l, final Map<A, A> map) {
    return map(l, new F1<A, A>() {

      public A get(A a) {
        try {
          return getOrKeep(map, a);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "getOrKeep(map, a)";
      }
    });
  }

  static public List<String> splitCamelCase(String s) {
    return ai_splitCamelCase(s);
  }

  static public JInternalFrame getInternalFrame(final Object _o) {
    return _o == null ? null : swing(new F0<JInternalFrame>() {

      public JInternalFrame get() {
        try {
          Object o = _o;
          if (o instanceof ButtonGroup)
            o = first(buttonsInGroup((ButtonGroup) o));
          if (!(o instanceof Component))
            return null;
          Component c = (Component) o;
          while (c != null) {
            if (c instanceof JInternalFrame)
              return (JInternalFrame) c;
            c = c.getParent();
          }
          return null;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "O o = _o;\r\n    if (o instanceof ButtonGroup) o = first(buttonsInGroup((Button...";
      }
    });
  }

  static public List<Component> allChildren(Component c) {
    return childrenOfType(c, Component.class);
  }

  static public void onEnterIfTextField(Component c, Object action) {
    if (action == null)
      return;
    if (c instanceof JTextField)
      onEnter((JTextField) c, action);
    else if (c instanceof JComboBox)
      onEnter((JComboBox) c, action);
  }

  static public Object[] flattenArray2(Object... a) {
    List l = new ArrayList();
    if (a != null)
      for (Object x : a) if (x instanceof Object[])
        l.addAll(asList((Object[]) x));
      else if (x instanceof Collection)
        l.addAll((Collection) x);
      else
        l.add(x);
    return asObjectArray(l);
  }

  static public <A> void scanForComponents(final Component c, final Class<A> theClass, final List<A> l) {
    if (theClass.isInstance(c))
      l.add((A) c);
    if (c instanceof Container) {
      swing(new Runnable() {

        public void run() {
          try {
            for (Component comp : ((Container) c).getComponents()) scanForComponents(comp, theClass, l);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "for (Component comp : ((Container) c).getComponents())\r\n      scanForComponen...";
        }
      });
    }
  }

  static public int min3(int a, int b, int c) {
    return min(min(a, b), c);
  }

  static public double min3(double a, double b, double c) {
    return min(min(a, b), c);
  }

  static public class getOpt_Map extends WeakHashMap {

    public getOpt_Map() {
      if (getOpt_special == null)
        getOpt_special = new HashMap();
      clear();
    }

    public void clear() {
      super.clear();
      put(Class.class, getOpt_special);
      put(String.class, getOpt_special);
    }
  }

  static final public Map<Class, HashMap<String, Field>> getOpt_cache = _registerDangerousWeakMap(synchroMap(new getOpt_Map()));

  static public HashMap getOpt_special;

  static public Object getOpt_cached(Object o, String field) {
    try {
      if (o == null)
        return null;
      Class c = o.getClass();
      HashMap<String, Field> map;
      synchronized (getOpt_cache) {
        map = getOpt_cache.get(c);
        if (map == null)
          map = getOpt_makeCache(c);
      }
      if (map == getOpt_special) {
        if (o instanceof Class)
          return getOpt((Class) o, field);
        if (o instanceof Map)
          return ((Map) o).get(field);
      }
      Field f = map.get(field);
      if (f != null)
        return f.get(o);
      if (o instanceof DynamicObject)
        return mapGet2(((DynamicObject) o).fieldValues, field);
      return null;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public HashMap<String, Field> getOpt_makeCache(Class c) {
    HashMap<String, Field> map;
    if (isSubtypeOf(c, Map.class))
      map = getOpt_special;
    else {
      map = new HashMap();
      if (!reflection_classesNotToScan().contains(c.getName())) {
        Class _c = c;
        do {
          for (Field f : _c.getDeclaredFields()) {
            makeAccessible(f);
            String name = f.getName();
            if (!map.containsKey(name))
              map.put(name, f);
          }
          _c = _c.getSuperclass();
        } while (_c != null);
      }
    }
    if (getOpt_cache != null)
      getOpt_cache.put(c, map);
    return map;
  }

  static public Object[] toArray(Collection c) {
    return toObjectArray(c);
  }

  static public <A> A[] toArray(Iterable<A> c, Class<A> type) {
    A[] a = arrayOfType(l(c), type);
    if (a.length == 0)
      return a;
    asList(c).toArray(a);
    return a;
  }

  static public <A> A[] toArray(A[] array, Collection c) {
    if (array == null || c == null)
      return null;
    asList(c).toArray(array);
    return array;
  }

  static public Method findMethodNamed(Object obj, String method) {
    if (obj == null)
      return null;
    if (obj instanceof Class)
      return findMethodNamed((Class) obj, method);
    return findMethodNamed(obj.getClass(), method);
  }

  static public Method findMethodNamed(Class c, String method) {
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) if (m.getName().equals(method)) {
        makeAccessible(m);
        return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  static public void upgradeJavaXAndRestart() {
    run("#1001639");
    restart();
    sleep();
  }

  static public boolean isJavaxApplicationSnippetType(int type) {
    return type == snippetType_javaxSource() || type == snippetType_JavaXDesktop();
  }

  static public boolean isJavaxModuleSnippetType(int type) {
    return type == snippetType_javaxModule() || type == snippetType_javaxDesktopModule();
  }

  static public int snippetType_dynModule() {
    return 57;
  }

  static public List<String> hotwire_libraryIDsFromJar(File jar) {
    String dehlibs = unnull(loadTextFileFromZip(jar, "libraries"));
    return regexpExtractAll("\\d+", dehlibs);
  }

  static public byte[] subByteArray(byte[] b, int start) {
    return subByteArray(b, start, l(b));
  }

  static public byte[] subByteArray(byte[] b, int start, int end) {
    start = max(start, 0);
    end = min(end, l(b));
    if (start == 0 && end == l(b))
      return b;
    if (start >= end)
      return new byte[0];
    byte[] x = new byte[end - start];
    System.arraycopy(b, start, x, 0, end - start);
    return x;
  }

  static public void moveFile(File a, File b) {
    if (!renameFile(a, b))
      throw fail("File move failed: " + a + " to " + b);
  }

  static public String tok_javaDropCommentsFromWhitespace(String s) {
    int l = l(s), j = 0;
    StringBuilder buf = new StringBuilder();
    while (j < l) {
      char c = s.charAt(j);
      char d = j + 1 >= l ? '\0' : s.charAt(j + 1);
      if (c == '/' && d == '*') {
        do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
        j = Math.min(j + 2, l);
      } else if (c == '/' && d == '/') {
        do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
      } else {
        buf.append(c);
        ++j;
      }
    }
    return str(buf);
  }

  static public List dm_listStems() {
    return (List) dm_callOS("onModules");
  }

  static public boolean containsNewLines(String s) {
    return containsNewLine(s);
  }

  static public String jlabel_textAsHTML_center(String text) {
    return "<html><div style=\"text-align: center;\">" + replace(htmlencode(text), "\n", "<br>") + "</div></html>";
  }

  static public void assertNotOnAWTThread() {
    assertFalse("Can't do this in AWT thread", isAWTThread());
  }

  static public boolean startsWithDigit(String s) {
    return nempty(s) && isDigit(s.charAt(0));
  }

  static public String ok2(String s) {
    return "ok " + s;
  }

  static public boolean makeAndroid3_disable = false;

  static public class Android3 implements AutoCloseable {

    public String greeting;

    public boolean publicOverride = false;

    public int startPort = 5000;

    public Responder responder;

    public boolean console = true;

    public boolean quiet = false;

    public boolean daemon = false;

    public boolean incomingSilent = false;

    public int incomingPrintLimit = 200;

    public boolean useMultiPort = true;

    public boolean recordHistory = false;

    public boolean verbose = false;

    public int answerPrintLimit = 500;

    public boolean newLineAboveAnswer, newLineBelowAnswer;

    public int port;

    public long vport;

    public DialogHandler handler;

    public ServerSocket server;

    public Android3(String greeting) {
      this.greeting = greeting;
    }

    public Android3() {
    }

    public void close() {
      dispose();
    }

    synchronized public void dispose() {
      if (server != null) {
        try {
          server.close();
        } catch (IOException e) {
          print("[internal] " + e);
        }
        server = null;
      }
      if (vport != 0) {
        try {
          print("Disposing " + this);
          removeFromMultiPort(vport);
          vport = 0;
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
    }

    public String toString() {
      return "Bot: " + greeting + " [vport " + vport + "]";
    }
  }

  static abstract public class Responder {

    abstract public String answer(String s, List<String> history);
  }

  static public Android3 makeAndroid3(final String greeting) {
    return makeAndroid3(new Android3(greeting));
  }

  static public Android3 makeAndroid3(final String greeting, Responder responder) {
    Android3 android = new Android3(greeting);
    android.responder = responder;
    return makeAndroid3(android);
  }

  static public Android3 makeAndroid3(final Android3 a) {
    if (makeAndroid3_disable)
      return a;
    if (a.responder == null)
      a.responder = new Responder() {

        public String answer(String s, List<String> history) {
          return callStaticAnswerMethod(s, history);
        }
      };
    if (!a.quiet)
      print("[bot] " + a.greeting);
    if (a.console && (readLine_noReadLine || makeAndroid3_consoleInUse()))
      a.console = false;
    record(a);
    if (a.useMultiPort)
      a.vport = addToMultiPort(a.greeting, makeAndroid3_verboseResponder(a));
    if (a.console)
      makeAndroid3_handleConsole(a);
    if (a.useMultiPort)
      return a;
    a.handler = makeAndroid3_makeDialogHandler(a);
    if (a.quiet)
      startDialogServer_quiet.set(true);
    try {
      a.port = a.daemon ? startDialogServerOnPortAboveDaemon(a.startPort, a.handler) : startDialogServerOnPortAbove(a.startPort, a.handler);
    } finally {
      startDialogServer_quiet.set(null);
    }
    a.server = startDialogServer_serverSocket;
    return a;
  }

  static public void makeAndroid3_handleConsole(final Android3 a) {
    if (!a.quiet)
      print("You may also type on this console.");
    {
      startThread(new Runnable() {

        public void run() {
          try {
            List<String> history = new ArrayList();
            while (licensed()) {
              String line;
              try {
                line = readLine();
              } catch (Throwable e) {
                print(getInnerMessage(e));
                break;
              }
              if (line == null)
                break;
              {
                history.add(line);
                history.add(makeAndroid3_getAnswer(line, history, a));
              }
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "List<String> history = new ArrayList();\r\n    while (licensed()) {\r\n      Stri...";
        }
      });
    }
  }

  static public DialogHandler makeAndroid3_makeDialogHandler(final Android3 a) {
    return new DialogHandler() {

      public void run(final DialogIO io) {
        if (!a.publicOverride && !(publicCommOn() || io.isLocalConnection())) {
          io.sendLine("Sorry, not allowed");
          return;
        }
        String dialogID = randomID(8);
        io.sendLine(a.greeting + " / Your ID: " + dialogID);
        List<String> history = new ArrayList();
        while (io.isStillConnected()) {
          if (io.waitForLine()) {
            final String line = io.readLineNoBlock();
            String s = dialogID + " at " + now() + ": " + quote(line);
            if (!a.incomingSilent)
              print(shorten(s, a.incomingPrintLimit));
            if (eq(line, "bye")) {
              io.sendLine("bye stranger");
              return;
            }
            Matches m = new Matches();
            if (a.recordHistory)
              history.add(line);
            String answer;
            if (match3("this is a continuation of talk *", s, m) || match3("hello bot! this is a continuation of talk *", s, m)) {
              dialogID = unquote(m.m[0]);
              answer = "ok";
            } else
              try {
                makeAndroid3_io.set(io);
                answer = makeAndroid3_getAnswer(line, history, a);
              } finally {
                makeAndroid3_io.set(null);
              }
            if (a.recordHistory)
              history.add(answer);
            io.sendLine(answer);
          }
        }
      }
    };
  }

  static public String makeAndroid3_getAnswer(String line, List<String> history, Android3 a) {
    String answer, originalAnswer;
    try {
      originalAnswer = a.responder.answer(line, history);
      answer = makeAndroid3_fallback(line, history, originalAnswer);
    } catch (Throwable e) {
      e = getInnerException(e);
      printStackTrace(e);
      originalAnswer = answer = e.toString();
    }
    if (!a.incomingSilent) {
      if (originalAnswer == null)
        originalAnswer = "?";
      if (a.newLineAboveAnswer)
        print();
      print(">" + dropFirst(indentx(2, shorten(rtrim(originalAnswer), a.answerPrintLimit))));
      if (a.newLineBelowAnswer)
        print();
    }
    return answer;
  }

  static public String makeAndroid3_fallback(String s, List<String> history, String answer) {
    if (answer == null && match3("what is your pid", s))
      return getPID();
    if (answer == null && match3("what is your program id", s))
      return getProgramID();
    if (match3("get injection id", s))
      return getInjectionID();
    if (answer == null)
      answer = "?";
    if (answer.indexOf('\n') >= 0 || answer.indexOf('\r') >= 0)
      answer = quote(answer);
    return answer;
  }

  static public boolean makeAndroid3_consoleInUse() {
    if (isTrue(vm_generalMap_get("consoleInUse")))
      return true;
    for (Object o : record_list) if (o instanceof Android3 && ((Android3) o).console)
      return true;
    return false;
  }

  static public Responder makeAndroid3_verboseResponder(final Android3 a) {
    return new Responder() {

      public String answer(String s, List<String> history) {
        if (a.verbose)
          print("> " + shorten(s, a.incomingPrintLimit));
        String answer = a.responder.answer(s, history);
        if (a.verbose)
          print("< " + shorten(answer, a.incomingPrintLimit));
        return answer;
      }
    };
  }

  static public ThreadLocal<DialogIO> makeAndroid3_io = new ThreadLocal();

  static public Android3 makeAndroid3() {
    return makeAndroid3(getProgramTitle() + ".");
  }

  static public String makeResponder_callAnswerMethod(Object bot, String s, List<String> history) {
    String answer = (String) callOpt(bot, "answer", s, history);
    if (answer == null)
      answer = (String) callOpt(bot, "answer", s);
    return answer;
  }

  static public Responder makeResponder(final Object bot) {
    if (bot instanceof Responder)
      return (Responder) bot;
    if (bot instanceof String) {
      String f = (String) bot;
      return new Responder() {

        public String answer(String s, List<String> history) {
          String answer = (String) callOptMC((String) bot, s, history);
          if (answer == null)
            answer = (String) callOptMC((String) bot, s);
          return answer;
        }
      };
    }
    return new Responder() {

      public String answer(String s, List<String> history) {
        return makeResponder_callAnswerMethod(bot, s, history);
      }
    };
  }

  static public String defaultBotName() {
    return getProgramTitle() + ".";
  }

  static public Object rcurry(final Object f, final Object arg) {
    int n = numberOfFunctionArguments(f);
    if (n == 0)
      throw fail("function takes no arguments");
    if (n == 1)
      return new F0() {

        public Object get() {
          return callF(f, arg);
        }
      };
    if (n == 2)
      return new F1() {

        public Object get(Object a) {
          return callF(f, a, arg);
        }
      };
    throw todo("currying a function with " + n + "arguments");
  }

  static public MenuItem menuItem(String text, final Object r) {
    MenuItem mi = new MenuItem(text);
    mi.addActionListener(actionListener(r));
    return mi;
  }

  static public JTextArea jTextArea() {
    return jTextArea("");
  }

  static public JTextArea jTextArea(final String text) {
    return jTextAreaWithUndo(text);
  }

  static public String localSnippetTitle(String snippetID) {
    if (!isLocalSnippetID(snippetID))
      return null;
    File f = localSnippetFile(snippetID);
    if (!f.exists())
      return null;
    return or2(getFileInfoField(dropExtension(f), "Title"), "Unnamed");
  }

  static public String muricaCredentialsQuery() {
    return htmlQuery(muricaCredentials());
  }

  static public boolean isGeneralFileServerSnippet(long id) {
    return id >= 1400000 && id < 1500000;
  }

  static public boolean saveTextFileIfChanged(File f, String contents) {
    return saveTextFileIfDifferent(f, contents);
  }

  static public File snippetTitle_cacheFile(String snippetID) {
    return javaxCachesDir("Snippet Titles/" + psI(snippetID));
  }

  static public Rect rect(int x, int y, int w, int h) {
    return new Rect(x, y, w, h);
  }

  static public boolean jInternalFrame_iconifiable = true;

  static public JInternalFrame jInternalFrame() {
    return jInternalFrame("");
  }

  static public JInternalFrame jInternalFrame(final String title) {
    return swing(new F0<JInternalFrame>() {

      public JInternalFrame get() {
        try {
          JInternalFrame f = new JInternalFrame(title, true, true, true, jInternalFrame_iconifiable);
          f.setVisible(true);
          return f;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JInternalFrame f = new JInternalFrame(title, true, true, true, jInternalFrame...";
      }
    });
  }

  static public void setInternalFrameContents(final Component c, final Object contents) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            JInternalFrame frame = getInternalFrame(c);
            if (frame == null)
              return;
            frame.getContentPane().removeAll();
            frame.getContentPane().setLayout(new BorderLayout());
            if (contents != null)
              frame.getContentPane().add(wrap(contents));
            revalidate(frame);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "JInternalFrame frame = getInternalFrame(c);\r\n    if (frame == null) return;\r\n...";
        }
      });
    }
  }

  static public <A extends Component> A setBounds(final int x, final int y, final int w, final int h, final A a) {
    if (a != null) {
      swing(new Runnable() {

        public void run() {
          try {
            a.setBounds(x, y, w, h);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "a.setBounds(x, y, w, h);";
        }
      });
    }
    return a;
  }

  static public <A extends Component> A setBounds(A a, Rect r) {
    if (a != null && r != null) {
      swing(new Runnable() {

        public void run() {
          try {
            a.setBounds(toRectangle(r));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "a.setBounds(toRectangle(r));";
        }
      });
    }
    return a;
  }

  static public <A extends Component> A setBounds(Rect r, A a) {
    return setBounds(a, r);
  }

  static public <A extends Component> A setBounds(A a, int x, int y, int w, int h) {
    return setBounds(x, y, w, h, a);
  }

  static public void internalFrameDefaultPosition(JInternalFrame f) {
    f.setSize(500, 300);
    centerInternalFrame(f);
  }

  static public int fixInternalFrame_borderTopLeft = 0;

  static public int fixInternalFrame_borderBottomRight = 40;

  static public JInternalFrame fixInternalFrame(final JInternalFrame f) {
    return swing(new F0<JInternalFrame>() {

      public JInternalFrame get() {
        try {
          Container c = f.getParent();
          if (c == null)
            return f;
          Rect r = toRect(f.getBounds());
          int a = fixInternalFrame_borderTopLeft, b = fixInternalFrame_borderBottomRight;
          Rect outer = new Rect(a, a, c.getWidth() - b, c.getHeight() - b);
          if (!rectContains(outer, r))
            f.setLocation(max(a, min(r.x, outer.x2())), max(a, min(r.y, outer.y2())));
          if (r.w > c.getWidth() || r.h > c.getHeight())
            f.setSize(c.getWidth() - a, c.getHeight() - a);
          return f;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "Container c = f.getParent();\r\n    if (c == null) ret f;\r\n    Rect r = toRect(...";
      }
    });
  }

  static public int getScreenWidth() {
    return getScreenSize().width;
  }

  static public int getScreenHeight() {
    return getScreenSize().height;
  }

  static public String makeFrame_defaultIcon;

  static public boolean makeFrame_hideConsole = false;

  static public ThreadLocal<VF1<JFrame>> makeFrame_post = new ThreadLocal();

  static public JFrame makeFrame() {
    return makeFrame((Component) null);
  }

  static public JFrame makeFrame(Object content) {
    return makeFrame(programTitle(), content);
  }

  static public JFrame makeFrame(String title) {
    return makeFrame(title, null);
  }

  static public JFrame makeFrame(String title, Object content) {
    return makeFrame(title, content, true);
  }

  static public JFrame makeFrame(final String title, final Object content, final boolean showIt) {
    final VF1<JFrame> post = optParam(makeFrame_post);
    return swing(new F0<JFrame>() {

      public JFrame get() {
        try {
          if (getFrame(content) != null)
            return getFrame(setFrameTitle((Component) content, title));
          final JFrame frame = new JFrame(title);
          if (makeFrame_defaultIcon != null)
            setFrameIconLater(frame, makeFrame_defaultIcon);
          _initFrame(frame);
          Component wrapped = wrap(content);
          if (wrapped != null)
            frame.getContentPane().add(wrapped);
          frame.setBounds(defaultNewFrameBounds());
          callF(post, frame);
          if (showIt)
            frame.setVisible(true);
          if (showIt && makeFrame_hideConsole) {
            hideConsole();
            makeFrame_hideConsole = false;
          }
          return frame;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "if (getFrame(content) != null)\r\n      ret getFrame(setFrameTitle((Component) ...";
      }
    });
  }

  static public boolean frameTooSmall(JFrame frame) {
    return frame.getWidth() < 100 || frame.getHeight() < 50;
  }

  static public void frameStandardSize(JFrame frame) {
    frame.setBounds(300, 100, 500, 400);
  }

  static public void setFrameContents(final Component c, final Object contents) {
    swing(new Runnable() {

      public void run() {
        try {
          JFrame frame = getFrame(c);
          if (frame == null)
            return;
          frame.getContentPane().removeAll();
          frame.getContentPane().setLayout(new BorderLayout());
          frame.getContentPane().add(wrap(contents));
          revalidate(frame);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JFrame frame = getFrame(c);\r\n  if (frame == null) return;\r\n  frame.getContent...";
      }
    });
  }

  static public <A> void forEach(Iterable<A> l, IVF1<A> f) {
    if (l != null)
      for (A a : l) callF(f, a);
  }

  static public <A> void forEach(IVF1<A> f, Iterable<A> l) {
    forEach(l, f);
  }

  static public boolean containsSpaces(String s) {
    return indexOf(s, ' ') >= 0;
  }

  static public List<String> ai_splitCamelCase(String s) {
    int j = 0;
    List<String> l = new ArrayList();
    if (isAllUpperCase(s)) {
      l.add(s);
      return l;
    }
    for (int i = 0; i < l(s); i++) if (i > j && isUpperCaseLetter(s.charAt(i))) {
      l.add(substring(s, j, i));
      j = i;
    }
    if (j < l(s))
      l.add(substring(s, j));
    return l;
  }

  static public List<Pair> _registerDangerousWeakMap_preList;

  static public <A> A _registerDangerousWeakMap(A map) {
    return _registerDangerousWeakMap(map, null);
  }

  static public <A> A _registerDangerousWeakMap(A map, Object init) {
    callF(init, map);
    if (init instanceof String) {
      final String f = (String) init;
      init = new VF1<Map>() {

        public void get(Map map) {
          try {
            callMC(f, map);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "callMC(f, map)";
        }
      };
    }
    if (javax() == null) {
      if (_registerDangerousWeakMap_preList == null)
        _registerDangerousWeakMap_preList = synchroList();
      _registerDangerousWeakMap_preList.add(pair(map, init));
      return map;
    }
    call(javax(), "_registerDangerousWeakMap", map, init);
    return map;
  }

  static public void _onLoad_registerDangerousWeakMap() {
    assertNotNull(javax());
    if (_registerDangerousWeakMap_preList == null)
      return;
    for (Pair p : _registerDangerousWeakMap_preList) _registerDangerousWeakMap(p.a, p.b);
    _registerDangerousWeakMap_preList = null;
  }

  static public <A, B> B mapGet2(Map<A, B> map, A a) {
    return map == null ? null : map.get(a);
  }

  static public <A, B> B mapGet2(A a, Map<A, B> map) {
    return map == null ? null : map.get(a);
  }

  static public boolean isSubtypeOf(Class a, Class b) {
    return b.isAssignableFrom(a);
  }

  static public Set<String> reflection_classesNotToScan_value = litset("jdk.internal.loader.URLClassPath");

  static public Set<String> reflection_classesNotToScan() {
    return reflection_classesNotToScan_value;
  }

  static public void restart() {
    Object j = getJavaX();
    call(j, "cleanRestart", get(j, "fullArgs"));
  }

  static public int snippetType_javaxSource() {
    return 34;
  }

  static public int snippetType_JavaXDesktop() {
    return 55;
  }

  static public int snippetType_javaxModule() {
    return 54;
  }

  static public int snippetType_javaxDesktopModule() {
    return 58;
  }

  static public List<String> regexpExtractAll(String pat, String s) {
    if (s == null)
      return null;
    Matcher m = regexpMatcher(pat, s);
    List<String> out = new ArrayList();
    while (m.find()) out.add(m.group());
    return out;
  }

  static public boolean renameFile(File a, File b) {
    mkdirsForFile(b);
    return a.renameTo(b);
  }

  static public boolean renameFile(File a, String newName) {
    return renameFile(a, fileInSameDir(a, newName));
  }

  static public boolean containsNewLine(String s) {
    return contains(s, '\n');
  }

  static public boolean isDigit(char c) {
    return Character.isDigit(c);
  }

  static public void removeFromMultiPort(long vport) {
    if (vport == 0)
      return;
    for (Object port : getMultiPorts()) call(port, "removePort", vport);
  }

  static public String callStaticAnswerMethod(List bots, String s) {
    for (Object c : bots) try {
      String answer = callStaticAnswerMethod(c, s);
      if (!empty(answer))
        return answer;
    } catch (Throwable e) {
      print("Error calling " + getProgramID(c));
      e.printStackTrace();
    }
    return null;
  }

  static public String callStaticAnswerMethod(Object c, String s) {
    String answer = (String) callOpt(c, "answer", s, litlist(s));
    if (answer == null)
      answer = (String) callOpt(c, "answer", s);
    return emptyToNull(answer);
  }

  static public String callStaticAnswerMethod(String s) {
    return callStaticAnswerMethod(mc(), s);
  }

  static public String callStaticAnswerMethod(String s, List<String> history) {
    return callStaticAnswerMethod(mc(), s, history);
  }

  static public String callStaticAnswerMethod(Object c, String s, List<String> history) {
    String answer = (String) callOpt(c, "answer", s, history);
    if (answer == null)
      answer = (String) callOpt(c, "answer", s);
    return emptyToNull(answer);
  }

  static public List<Object> record_list = synchroList();

  static public void record(Object o) {
    record_list.add(o);
  }

  static public Object addToMultiPort_responder;

  static public long addToMultiPort(final String botName) {
    return addToMultiPort(botName, new Object() {

      public String answer(String s, List<String> history) {
        String answer = (String) (callOpt(getMainClass(), "answer", s, history));
        if (answer != null)
          return answer;
        answer = (String) callOpt(getMainClass(), "answer", s);
        if (answer != null)
          return answer;
        if (match3("get injection id", s))
          return getInjectionID();
        return null;
      }
    });
  }

  static public long addToMultiPort(final String botName, final Object responder) {
    addToMultiPort_responder = responder;
    startMultiPort();
    List ports = getMultiPorts();
    if (ports == null)
      return 0;
    if (ports.isEmpty())
      throw fail("No multiports!");
    if (ports.size() > 1)
      print("Multiple multi-ports. Using last one.");
    Object port = last(ports);
    Object responder2 = new Object() {

      public String answer(String s, List<String> history) {
        if (match3("get injection id", s))
          return getInjectionID();
        if (match3("your name", s))
          return botName;
        return (String) call(responder, "answer", s, history);
      }
    };
    record(responder2);
    return (Long) call(port, "addResponder", botName, responder2);
  }

  static public AtomicInteger dialogServer_clients = new AtomicInteger();

  static public boolean dialogServer_printConnects = false;

  static public ThreadLocal<Boolean> startDialogServer_quiet = new ThreadLocal();

  static public Set<String> dialogServer_knownClients = synchroTreeSet();

  static public int startDialogServerOnPortAbove(int port, DialogHandler handler) {
    while (!forbiddenPort(port) && !startDialogServerIfPortAvailable(port, handler)) ++port;
    return port;
  }

  static public int startDialogServerOnPortAboveDaemon(int port, DialogHandler handler) {
    while (!forbiddenPort(port) && !startDialogServerIfPortAvailable(port, handler, true)) ++port;
    return port;
  }

  static public void startDialogServer(int port, DialogHandler handler) {
    if (!startDialogServerIfPortAvailable(port, handler))
      throw fail("Can't start dialog server on port " + port);
  }

  static public boolean startDialogServerIfPortAvailable(int port, final DialogHandler handler) {
    return startDialogServerIfPortAvailable(port, handler, false);
  }

  static public ServerSocket startDialogServer_serverSocket;

  static public boolean startDialogServerIfPortAvailable(int port, final DialogHandler handler, boolean daemon) {
    ServerSocket serverSocket = null;
    try {
      serverSocket = new ServerSocket(port);
    } catch (IOException e) {
      return false;
    }
    final ServerSocket _serverSocket = serverSocket;
    startDialogServer_serverSocket = serverSocket;
    Thread thread = new Thread("Socket accept port " + port) {

      public void run() {
        try {
          while (true) {
            try {
              final Socket s = _serverSocket.accept();
              String client = s.getInetAddress().toString();
              if (!dialogServer_knownClients.contains(client) && neq(client, "/127.0.0.1")) {
                print("connect from " + client + " - clients: " + dialogServer_clients.incrementAndGet());
                dialogServer_knownClients.add(client);
              }
              String threadName = "Handling client " + s.getInetAddress();
              Thread t2 = new Thread(threadName) {

                public void run() {
                  try {
                    final Writer w = new OutputStreamWriter(s.getOutputStream(), "UTF-8");
                    final BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream(), "UTF-8"));
                    DialogIO io = new DialogIO() {

                      public boolean isLocalConnection() {
                        return s.getInetAddress().isLoopbackAddress();
                      }

                      public boolean isStillConnected() {
                        return !(eos || s.isClosed());
                      }

                      public void sendLine(String line) {
                        try {
                          w.write(line + "\n");
                          w.flush();
                        } catch (Exception __e) {
                          throw rethrow(__e);
                        }
                      }

                      public String readLineImpl() {
                        try {
                          return in.readLine();
                        } catch (Exception __e) {
                          throw rethrow(__e);
                        }
                      }

                      public void close() {
                        try {
                          s.close();
                        } catch (IOException e) {
                        }
                      }

                      public Socket getSocket() {
                        return s;
                      }
                    };
                    try {
                      handler.run(io);
                    } finally {
                      if (!io.noClose)
                        s.close();
                    }
                  } catch (IOException e) {
                    print("[internal] " + e);
                  } finally {
                  }
                }
              };
              t2.setDaemon(true);
              t2.start();
            } catch (SocketTimeoutException e) {
            }
          }
        } catch (IOException e) {
          print("[internal] " + e);
        }
      }
    };
    if (daemon)
      thread.setDaemon(true);
    thread.start();
    if (!isTrue(getAndClearThreadLocal(startDialogServer_quiet)))
      print("Dialog server on port " + port + " started.");
    return true;
  }

  static volatile public boolean readLine_noReadLine = false;

  static public String readLine_lastInput;

  static public String readLine_prefix = "[] ";

  static public String readLine() {
    if (readLine_noReadLine)
      return null;
    String s = readLineHidden();
    if (s != null) {
      readLine_lastInput = s;
      print(readLine_prefix + s);
    }
    return s;
  }

  static public String getInnerMessage(Throwable e) {
    if (e == null)
      return null;
    return getInnerException(e).getMessage();
  }

  static public boolean publicCommOn() {
    return "1".equals(loadTextFile(new File(userHome(), ".javax/public-communication")));
  }

  static public String processID_cached;

  static public String getPID() {
    if (processID_cached == null) {
      String name = ManagementFactory.getRuntimeMXBean().getName();
      processID_cached = name.replaceAll("@.*", "");
    }
    return processID_cached;
  }

  static public String getInjectionID() {
    return (String) call(getJavaX(), "getInjectionID", getMainClass());
  }

  static public String getProgramTitle() {
    return getProgramName();
  }

  static public int numberOfFunctionArguments(Object f) {
    if (f instanceof F0)
      return 0;
    if (f instanceof F1)
      return 1;
    if (f instanceof F2)
      return 2;
    if (f instanceof VF1)
      return 1;
    if (f instanceof VF2)
      return 2;
    if (f instanceof String)
      return numberOfMethodArguments(mc(), (String) f);
    return numberOfMethodArguments(f, "get");
  }

  static public JTextArea jTextAreaWithUndo() {
    return jTextAreaWithUndo("");
  }

  static public JTextArea jTextAreaWithUndo(final String text) {
    return jenableUndoRedo(swingNu(JTextArea.class, text));
  }

  static public File localSnippetFile(long snippetID) {
    return localSnippetsDir(snippetID + ".text");
  }

  static public File localSnippetFile(String snippetID) {
    return localSnippetFile(parseSnippetID(snippetID));
  }

  static public String getFileInfoField(File f, String field) {
    return getOneLineFileInfoField(f, field);
  }

  static public File dropExtension(File f) {
    return f == null ? null : fileInSameDir(f, dropExtension(f.getName()));
  }

  static public String dropExtension(String s) {
    return takeFirst(s, smartLastIndexOf(s, '.'));
  }

  static public boolean saveTextFileIfDifferent(File f, String contents) {
    if (eq(loadTextFile(f), contents))
      return false;
    {
      saveTextFile(f, contents);
      return true;
    }
  }

  static public Rectangle toRectangle(Rect r) {
    return r == null ? null : r.getRectangle();
  }

  static public Rect toRect(Rectangle r) {
    return r == null ? null : new Rect(r);
  }

  static public Rect toRect(RectangularShape r) {
    return r == null ? null : toRect(r.getBounds());
  }

  static public Rect toRect(Rect r) {
    return r;
  }

  static public boolean rectContains(int x1, int y1, int w, int h, Pt p) {
    return p.x >= x1 && p.y >= y1 && p.x < x1 + w && p.y < y1 + h;
  }

  static public boolean rectContains(Rect a, Rect b) {
    return b.x >= a.x && b.y >= a.y && b.x2() <= a.x2() && b.y2() <= a.y2();
  }

  static public boolean rectContains(Rect a, int x, int y) {
    return a != null && a.contains(x, y);
  }

  static public String programTitle() {
    return getProgramName();
  }

  static public <A> A setFrameTitle(A c, final String title) {
    final Frame f = getAWTFrame(c);
    if (f != null) {
      swing(new Runnable() {

        public void run() {
          try {
            f.setTitle(title);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "f.setTitle(title);";
        }
      });
    }
    return c;
  }

  static public <A extends Component> A setFrameTitle(String title, A c) {
    return setFrameTitle(c, title);
  }

  static public JFrame setFrameTitle(String title) {
    Object f = getOpt(mc(), "frame");
    if (f instanceof JFrame)
      return setFrameTitle((JFrame) f, title);
    return null;
  }

  static public JFrame setFrameIconLater(Component c, final String imageID) {
    final JFrame frame = getFrame(c);
    if (frame != null)
      startThread("Loading Icon", new Runnable() {

        public void run() {
          try {
            final Image i = imageIcon(or2(imageID, "#1005557")).getImage();
            swingLater(new Runnable() {

              public void run() {
                try {
                  frame.setIconImage(i);
                } catch (Exception __e) {
                  throw rethrow(__e);
                }
              }

              public String toString() {
                return "frame.setIconImage(i);";
              }
            });
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "final Image i = imageIcon(or2(imageID, \"#1005557\")).getImage();\r\n      swingL...";
        }
      });
    return frame;
  }

  static public void _initFrame(JFrame f) {
    myFrames_list.put(f, Boolean.TRUE);
    standardTitlePopupMenu(f);
  }

  static public Rectangle defaultNewFrameBounds_r = new Rectangle(300, 100, 500, 400);

  static public Rectangle defaultNewFrameBounds() {
    return swing(new F0<Rectangle>() {

      public Rectangle get() {
        try {
          defaultNewFrameBounds_r.translate(60, 20);
          if (!screenRectangle().contains(defaultNewFrameBounds_r))
            defaultNewFrameBounds_r.setLocation(30 + random(30), 20 + random(20));
          return new Rectangle(defaultNewFrameBounds_r);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "defaultNewFrameBounds_r.translate(60, 20);\r\n    if (!screenRectangle().contai...";
      }
    });
  }

  static public void hideConsole() {
    final JFrame frame = consoleFrame();
    if (frame != null) {
      autoVMExit();
      swingLater(new Runnable() {

        public void run() {
          try {
            frame.setVisible(false);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "frame.setVisible(false);";
        }
      });
    }
  }

  static public boolean isAllUpperCase(String s) {
    return hasLettersAllUpperCase(s);
  }

  static public boolean isUpperCaseLetter(char c) {
    return Character.isUpperCase(c);
  }

  static public List<Object> getMultiPorts() {
    return (List) callOpt(getJavaX(), "getMultiPorts");
  }

  static public String emptyToNull(String s) {
    return eq(s, "") ? null : s;
  }

  static public <A, B> Map<A, B> emptyToNull(Map<A, B> map) {
    return empty(map) ? null : map;
  }

  static public void startMultiPort() {
    List mp = getMultiPorts();
    if (mp != null && mp.isEmpty()) {
      nohupJavax("#1001639");
      throw fail("Upgrading JavaX, please restart this program afterwards.");
    }
  }

  static public <A> Set<A> synchroTreeSet() {
    return Collections.synchronizedSet(new TreeSet<A>());
  }

  static public <A> Set<A> synchroTreeSet(TreeSet<A> set) {
    return Collections.synchronizedSet(set);
  }

  static public boolean forbiddenPort(int port) {
    return port == 5037;
  }

  static public String readLineHidden() {
    try {
      if (get(javax(), "readLine_reader") == null)
        set(javax(), "readLine_reader", new BufferedReader(new InputStreamReader(System.in, "UTF-8")));
      try {
        return ((BufferedReader) get(javax(), "readLine_reader")).readLine();
      } finally {
        consoleClearInput();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int numberOfMethodArguments(Object o, String method) {
    Class c;
    boolean mustBeStatic = false;
    if (o instanceof Class) {
      c = (Class) o;
      mustBeStatic = true;
    } else
      c = o.getClass();
    Class _c = c;
    int n = -1;
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (!m.getName().equals(method))
          continue;
        if (mustBeStatic && !methodIsStatic(m))
          continue;
        int nn = l(m.getParameterTypes());
        if (n == -1)
          n = nn;
        else if (n != nn)
          throw fail("Variable number of method arguments: " + _c + "." + method);
      }
      c = c.getSuperclass();
    }
    if (n == -1)
      throw fail("Method not found: " + _c + "." + method);
    return n;
  }

  static public File localSnippetsDir() {
    return javaxDataDir("Personal Programs");
  }

  static public File localSnippetsDir(String sub) {
    return newFile(localSnippetsDir(), sub);
  }

  static public String getOneLineFileInfoField(File f, String field) {
    File infoFile = associatedInfosFile(f);
    List<String> lines = lines(loadTextFile(infoFile));
    return firstStartingWithIC_drop(lines, field + ": ");
  }

  static public Frame getAWTFrame(final Object _o) {
    return swing(new F0<Frame>() {

      public Frame get() {
        try {
          Object o = _o;
          if (o instanceof ButtonGroup)
            o = first(buttonsInGroup((ButtonGroup) o));
          if (!(o instanceof Component))
            return null;
          Component c = (Component) o;
          while (c != null) {
            if (c instanceof Frame)
              return (Frame) c;
            c = c.getParent();
          }
          return null;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "O o = _o;\r\n    /*\r\n    ifdef HaveProcessing\r\n      if (o instanceof PApplet) ...";
      }
    });
  }

  static public void standardTitlePopupMenu(final JFrame frame) {
    if (!isSubstanceLAF())
      return;
    titlePopupMenu(frame, new VF1<JPopupMenu>() {

      public void get(JPopupMenu menu) {
        try {
          boolean alwaysOnTop = frame.isAlwaysOnTop();
          menu.add(jmenuItem("Restart Program", "restart"));
          menu.add(jmenuItem("Duplicate Program", "duplicateThisProgram"));
          menu.add(jmenuItem("Show Console", "showConsole"));
          menu.add(jCheckBoxMenuItem("Always On Top", alwaysOnTop, new Runnable() {

            public void run() {
              try {
                toggleAlwaysOnTop(frame);
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "toggleAlwaysOnTop(frame)";
            }
          }));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "bool alwaysOnTop = frame.isAlwaysOnTop();\r\n    ifndef standardTitlePopupMenu_...";
      }
    });
  }

  static public Rectangle screenRectangle() {
    return new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
  }

  static public Rectangle screenRectangle(GraphicsDevice device) {
    if (device == null)
      return null;
    DisplayMode mode = device.getDisplayMode();
    return new Rectangle(0, 0, mode.getWidth(), mode.getHeight());
  }

  static public JFrame consoleFrame() {
    return (JFrame) getOpt(get(getJavaX(), "console"), "frame");
  }

  static public void autoVMExit() {
    call(getJavaX(), "autoVMExit");
  }

  static public boolean hasLettersAllUpperCase(String s) {
    return hasLetters(s) && !containsLowerCase(s);
  }

  static public void duplicateThisProgram() {
    nohupJavax(trim(programID() + " " + smartJoin((String[]) get(getJavaX(), "fullArgs"))));
  }

  static public void showConsole() {
    callOpt(get(javax(), "console"), "showConsole");
  }

  static public void nohupJavax(final String javaxargs) {
    {
      startThread(new Runnable() {

        public void run() {
          try {
            call(hotwireOnce("#1008562"), "nohupJavax", javaxargs);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "call(hotwireOnce(\"#1008562\"), \"nohupJavax\", javaxargs);";
        }
      });
    }
  }

  static public void nohupJavax(final String javaxargs, final String vmArgs) {
    {
      startThread(new Runnable() {

        public void run() {
          try {
            call(hotwireOnce("#1008562"), "nohupJavax", javaxargs, vmArgs);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "call(hotwireOnce(\"#1008562\"), \"nohupJavax\", javaxargs, vmArgs);";
        }
      });
    }
  }

  static public void consoleClearInput() {
    consoleSetInput("");
  }

  static public File associatedInfosFile(File f) {
    return replaceExtension(f, ".infos");
  }

  static public String firstStartingWithIC_drop(Collection<String> l, final String prefix) {
    for (String s : unnull(l)) if (swic(s, prefix))
      return substring(s, l(prefix));
    return null;
  }

  static public String firstStartingWithIC_drop(String prefix, Collection<String> l) {
    return firstStartingWithIC_drop(l, prefix);
  }

  static public boolean isSubstanceLAF() {
    return substanceLookAndFeelEnabled();
  }

  static public boolean titlePopupMenu(final Component c, final Object menuMaker) {
    JComponent titleBar = getTitlePaneComponent(getPossiblyInternalFrame(c));
    if (titleBar == null) {
      print("Can't add title right click!");
      return false;
    } else {
      componentPopupMenu(titleBar, menuMaker);
      return true;
    }
  }

  static public JCheckBoxMenuItem jCheckBoxMenuItem(String text, boolean checked, final Object r) {
    final JCheckBoxMenuItem mi = new JCheckBoxMenuItem(text, checked);
    addActionListener(mi, new Runnable() {

      public void run() {
        try {
          callF(r, isChecked(mi));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "callF(r, isChecked(mi))";
      }
    });
    return mi;
  }

  static public void toggleAlwaysOnTop(JFrame frame) {
    frame.setAlwaysOnTop(!frame.isAlwaysOnTop());
  }

  static public boolean hasLetters(String s) {
    for (int i = 0; i < s.length(); i++) if (Character.isLetter(s.charAt(i)))
      return true;
    return false;
  }

  static public boolean containsLowerCase(String s) {
    for (int i = 0; i < l(s); i++) if (isLowerCase(s.charAt(i)))
      return true;
    return false;
  }

  static public String smartJoin(String[] args) {
    if (empty(args))
      return "";
    if (args.length == 1)
      return args[0];
    String[] a = new String[args.length];
    for (int i = 0; i < a.length; i++) a[i] = !isJavaIdentifier(args[i]) && !isQuoted(args[i]) ? quote(args[i]) : args[i];
    return join(" ", a);
  }

  static public String smartJoin(List<String> args) {
    return smartJoin(toStringArray(args));
  }

  static public Class hotwireOnce(String programID) {
    return hotwireCached(programID, false);
  }

  static public void consoleSetInput(final String text) {
    if (headless())
      return;
    setTextAndSelectAll(consoleInputField(), text);
    focusConsole();
  }

  static public File replaceExtension(File f, String extOld, String extNew) {
    return newFile(replaceExtension(f2s(f), extOld, extNew));
  }

  static public File replaceExtension(File f, String extNew) {
    return replaceExtension(f, fileExtension(f), extNew);
  }

  static public String replaceExtension(String s, String extOld, String extNew) {
    s = dropSuffixIC(addPrefixOptIfNempty(".", extOld), s);
    return s + addPrefixOptIfNempty(".", extNew);
  }

  static public String replaceExtension(String name, String extNew) {
    return replaceExtension(name, fileExtension(name), extNew);
  }

  static public boolean substanceLookAndFeelEnabled() {
    return startsWith(getLookAndFeel(), "org.pushingpixels.");
  }

  static public JComponent getTitlePaneComponent(RootPaneContainer window) {
    if (window instanceof JInternalFrame)
      return getInternalFrameTitlePaneComponent((JInternalFrame) window);
    if (!substanceLookAndFeelEnabled() || window == null)
      return null;
    JRootPane rootPane = window.getRootPane();
    if (rootPane != null) {
      Object ui = rootPane.getUI();
      return (JComponent) call(ui, "getTitlePane");
    }
    return null;
  }

  static public RootPaneContainer getPossiblyInternalFrame(Component c) {
    JInternalFrame f = getInternalFrame(c);
    if (f != null)
      return f;
    return optCast(RootPaneContainer.class, getWindow(c));
  }

  static public void addActionListener(JTextField tf, final Runnable action) {
    onEnter(tf, action);
  }

  static public void addActionListener(final JComboBox cb, final Runnable action) {
    if (cb != null) {
      swing(new Runnable() {

        public void run() {
          try {
            cb.addActionListener(actionListener(action));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "cb.addActionListener(actionListener(action));";
        }
      });
    }
  }

  static public void addActionListener(final AbstractButton b, final Runnable action) {
    if (b != null) {
      swing(new Runnable() {

        public void run() {
          try {
            b.addActionListener(actionListener(action));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "b.addActionListener(actionListener(action));";
        }
      });
    }
  }

  static public boolean isChecked(final JCheckBox checkBox) {
    return checkBox != null && (boolean) swing(new F0<Boolean>() {

      public Boolean get() {
        try {
          return checkBox.isSelected();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret checkBox.isSelected();";
      }
    });
  }

  static public boolean isChecked(final JCheckBoxMenuItem mi) {
    return mi != null && (boolean) swing(new F0<Boolean>() {

      public Boolean get() {
        try {
          return mi.isSelected();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret mi.isSelected();";
      }
    });
  }

  static public boolean isLowerCase(char c) {
    return Character.isLowerCase(c);
  }

  static public TreeMap<String, Class> hotwireCached_cache = new TreeMap();

  static public Lock hotwireCached_lock = lock();

  static public Class hotwireCached(String programID) {
    return hotwireCached(programID, true);
  }

  static public Class hotwireCached(String programID, boolean runMain) {
    return hotwireCached(programID, runMain, false);
  }

  static public Class hotwireCached(String programID, boolean runMain, boolean dependent) {
    Lock __0 = hotwireCached_lock;
    lock(__0);
    try {
      programID = formatSnippetID(programID);
      Class c = hotwireCached_cache.get(programID);
      if (c == null) {
        c = hotwire(programID);
        if (dependent)
          makeDependent(c);
        if (runMain)
          callMain(c);
        hotwireCached_cache.put(programID, c);
      }
      return c;
    } finally {
      unlock(__0);
    }
  }

  static public JTextField setTextAndSelectAll(final JTextField tf, final String text) {
    if (tf != null) {
      swing(new Runnable() {

        public void run() {
          try {
            tf.setText(text);
            tf.selectAll();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "tf.setText(text);\r\n    tf.selectAll();";
        }
      });
    }
    return tf;
  }

  static public void focusConsole(String s) {
    setConsoleInput(s);
    focusConsole();
  }

  static public void focusConsole() {
    JComponent tf = consoleInputFieldOrComboBox();
    if (tf != null) {
      tf.requestFocus();
    }
  }

  static public String dropSuffixIC(String suffix, String s) {
    return s == null ? null : ewic(s, suffix) ? s.substring(0, l(s) - l(suffix)) : s;
  }

  static public String addPrefixOptIfNempty(String prefix, String s) {
    return addPrefixIfNotEmpty2(prefix, s);
  }

  static public String getLookAndFeel() {
    return getClassName(UIManager.getLookAndFeel());
  }

  static public JComponent getInternalFrameTitlePaneComponent(JInternalFrame f) {
    return (JComponent) childWithClassNameEndingWith(f, "InternalFrameTitlePane");
  }

  static public void setConsoleInput(String text) {
    consoleSetInput(text);
  }

  static public JComponent consoleInputFieldOrComboBox() {
    Object console = get(getJavaX(), "console");
    JComboBox cb = (JComboBox) (getOpt(console, "cbInput"));
    if (cb != null)
      return cb;
    return (JTextField) getOpt(console, "tfInput");
  }

  static public Component childWithClassNameEndingWith(Component c, String suffix) {
    if (endsWith(className(c), suffix))
      return c;
    Component x;
    for (Component comp : getComponents(c)) if ((x = childWithClassNameEndingWith(comp, suffix)) != null)
      return x;
    return null;
  }

  final static public class LongRange {

    public long start, end;

    public LongRange() {
    }

    public LongRange(long start, long end) {
      this.end = end;
      this.start = start;
    }

    public boolean equals(Object o) {
      if (o instanceof LongRange)
        return start == ((LongRange) o).start && end == ((LongRange) o).end;
      return false;
    }

    public int hashCode() {
      return boostHashCombine(hashOfLong(start), hashOfLong(end));
    }

    public long length() {
      return end - start;
    }

    static public String _fieldOrder = "start end";

    public String toString() {
      return "[" + start + ";" + end + "]";
    }
  }

  static public interface Producer<A> {

    public A next();
  }

  static abstract public class DialogIO implements AutoCloseable {

    public String line;

    public boolean eos, loud, noClose;

    public Lock lock = lock();

    abstract public String readLineImpl();

    abstract public boolean isStillConnected();

    abstract public void sendLine(String line);

    abstract public boolean isLocalConnection();

    abstract public Socket getSocket();

    public int getPort() {
      Socket s = getSocket();
      return s == null ? 0 : s.getPort();
    }

    public boolean helloRead = false;

    public int shortenOutputTo = 500;

    public String readLineNoBlock() {
      String l = line;
      line = null;
      return l;
    }

    public boolean waitForLine() {
      try {
        ping();
        if (line != null)
          return true;
        line = readLineImpl();
        if (line == null)
          eos = true;
        return line != null;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public String readLine() {
      waitForLine();
      helloRead = true;
      return readLineNoBlock();
    }

    public String ask(String s, Object... args) {
      if (loud)
        return askLoudly(s, args);
      if (!helloRead)
        readLine();
      if (args.length != 0)
        s = format3(s, args);
      sendLine(s);
      return readLine();
    }

    public String askLoudly(String s, Object... args) {
      if (!helloRead)
        readLine();
      if (args.length != 0)
        s = format3(s, args);
      print("> " + shorten(s, shortenOutputTo));
      sendLine(s);
      String answer = readLine();
      print("< " + shorten(answer, shortenOutputTo));
      return answer;
    }

    public void pushback(String l) {
      if (line != null)
        throw fail();
      line = l;
      helloRead = false;
    }
  }

  static abstract public class DialogHandler {

    abstract public void run(DialogIO io);
  }

  static public class InternationalPhoneValidator {

    public String rawInput;

    public String filtered;

    public List<CountryDialCode> dialCodes;

    public String countryPart, localPart;

    public boolean valid = false;

    public String error;

    public InternationalPhoneValidator() {
    }

    public InternationalPhoneValidator(String rawInput) {
      this.rawInput = rawInput;
    }

    public void run() {
      filtered = dropPrefix("+", dropSpecialChars(rawInput));
      if (!isAllDigits(filtered)) {
        error = "Bad characters";
        return;
      }
      splitLocal();
    }

    public String dropSpecialChars(String s) {
      return replaceAll(s, "[\\s\\(\\)\\-]", "");
    }

    public void splitLocal() {
      String countryPart = longestPrefixInNavigableSet(filtered, navigableKeys(countryDialCodes_rawNumbersTreeMultiMap()));
      if (countryPart == null) {
        error = "Invalid country code";
        return;
      }
      dialCodes = countryDialCodes_rawNumbersTreeMultiMap().get(countryPart);
      localPart = dropPrefix(countryPart, filtered);
      if (l(filtered) < 7) {
        error = "Phone number too short";
        return;
      } else if (l(filtered) > 15) {
        error = "Phone number too long";
        return;
      }
      valid = true;
    }
  }

  static public class AlphanumComparator implements Comparator<String> {

    public boolean ignoreCase = false;

    final public boolean isDigit(char ch) {
      return ((ch >= 48) && (ch <= 57));
    }

    final public String getChunk(String s, int slength, int marker) {
      StringBuilder chunk = new StringBuilder();
      char c = s.charAt(marker);
      chunk.append(c);
      marker++;
      if (isDigit(c))
        while (marker < slength) {
          c = s.charAt(marker);
          if (!isDigit(c))
            break;
          chunk.append(c);
          marker++;
        }
      else
        while (marker < slength) {
          c = s.charAt(marker);
          if (isDigit(c))
            break;
          chunk.append(c);
          marker++;
        }
      return chunk.toString();
    }

    public int compare(String s1, String s2) {
      if (s1 == null)
        return s2 == null ? 0 : -1;
      if (s2 == null)
        return 1;
      int thisMarker = 0;
      int thatMarker = 0;
      int s1Length = s1.length();
      int s2Length = s2.length();
      while (thisMarker < s1Length && thatMarker < s2Length) {
        String thisChunk = getChunk(s1, s1Length, thisMarker);
        thisMarker += thisChunk.length();
        String thatChunk = getChunk(s2, s2Length, thatMarker);
        thatMarker += thatChunk.length();
        int result = 0;
        if (isDigit(thisChunk.charAt(0)) && isDigit(thatChunk.charAt(0))) {
          int thisChunkLength = thisChunk.length();
          result = thisChunkLength - thatChunk.length();
          if (result == 0) {
            for (int i = 0; i < thisChunkLength; i++) {
              result = thisChunk.charAt(i) - thatChunk.charAt(i);
              if (result != 0) {
                return result;
              }
            }
          }
        } else {
          result = thisChunk.compareTo(thatChunk);
        }
        if (result != 0)
          return result;
      }
      return s1Length - s2Length;
    }
  }

  static public class SnippetTitles {

    public Map<Long, String> titles = synchroHashMap();

    public String get(String snippetID) {
      if (snippetID == null)
        return null;
      long id = parseSnippetID(snippetID);
      if (titles.containsKey(id))
        return titles.get(id);
      else {
        String title = getSnippetTitle_safe(snippetID);
        titles.put(id, title);
        return title;
      }
    }

    public String probe(String id) {
      return titles.get(parseSnippetID(id));
    }

    public void put(String id, String title) {
      titles.put(parseSnippetID(id), title);
    }

    public boolean has(String id) {
      return titles.containsKey(parseSnippetID(id));
    }

    public void clear() {
      titles.clear();
    }
  }

  static public class _PrintIndent extends F1<String, Boolean> {

    public String prefix;

    public boolean beginningOfLine = true;

    public _PrintIndent() {
    }

    public _PrintIndent(String prefix) {
      this.prefix = prefix;
    }

    public Boolean get(String s) {
      if (empty(s))
        return false;
      boolean nl = s.endsWith("\n");
      if (nl)
        s = dropLast(s);
      s = s.replace("\n", "\n" + prefix);
      print_raw(beginningOfLine ? prefix + s : s);
      if (nl)
        print_raw("\n");
      beginningOfLine = nl;
      return false;
    }
  }

  abstract static public class AbstractLayoutManager implements LayoutManager {

    public Dimension preferredSize = new Dimension(100, 100);

    public Dimension minimumSize = new Dimension(10, 10);

    public void addLayoutComponent(String name, Component comp) {
    }

    public void removeLayoutComponent(Component comp) {
    }

    public Dimension preferredLayoutSize(Container parent) {
      layoutContainer(parent);
      return preferredSize;
    }

    public Dimension minimumLayoutSize(Container parent) {
      return minimumSize;
    }
  }

  static abstract public class LiveValue<A> {

    abstract public Class<A> getType();

    abstract public A get();

    abstract public void onChange(Runnable l);

    abstract public void removeOnChangeListener(Runnable l);

    public void onChangeAndNow(Runnable l) {
      onChange(l);
      callF(l);
    }
  }

  static public class Scored<A> extends Var<A> {

    public float score;

    public Scored() {
    }

    public Scored(A a, float score) {
      super(a);
      this.score = score;
    }

    public Scored(A a, double score) {
      super(a);
      this.score = (float) score;
    }

    public float score() {
      return score;
    }

    public String toString() {
      return toIntPercent(score) + "%: " + str(get());
    }
  }

  static final public class ParameterizedTypeImpl implements ParameterizedType {

    final public Type ownerType;

    final public Type rawType;

    final public Type[] typeArguments;

    public ParameterizedTypeImpl(Type ownerType, Type rawType, Type... typeArguments) {
      this.typeArguments = typeArguments;
      this.rawType = rawType;
      this.ownerType = ownerType;
    }

    public Type[] getActualTypeArguments() {
      return typeArguments;
    }

    public Type getRawType() {
      return rawType;
    }

    public Type getOwnerType() {
      return ownerType;
    }

    @Override
    public boolean equals(Object other) {
      if (other instanceof ParameterizedType)
        return eq(ownerType, ((ParameterizedType) other).getOwnerType()) && eq(rawType, ((ParameterizedType) other).getRawType()) && eq(asList(typeArguments), asList(((ParameterizedType) other).getActualTypeArguments()));
      return false;
    }

    @Override
    public int hashCode() {
      return Arrays.hashCode(typeArguments) ^ rawType.hashCode() ^ _hashCode(ownerType);
    }

    @Override
    public String toString() {
      int length = typeArguments.length;
      if (length == 0)
        return typeToString(rawType);
      StringBuilder stringBuilder = new StringBuilder();
      stringBuilder.append(typeToString(rawType)).append("<").append(typeToString(typeArguments[0]));
      for (int i = 1; i < length; i++) {
        stringBuilder.append(", ").append(typeToString(typeArguments[i]));
      }
      return stringBuilder.append(">").toString();
    }

    static public String typeToString(Type type) {
      return type instanceof Class ? ((Class<?>) type).getName() : type.toString();
    }
  }

  static public class MetaTransformer {

    static public interface StructureHandler {

      public Object transform(Object o, IF1 recurse);

      public void visit(Object o, IVF1 recurse);
    }

    public List<StructureHandler> structureHandlers;

    public MetaTransformer() {
    }

    public MetaTransformer(StructureHandler... handlers) {
      structureHandlers = asList(handlers);
    }

    public Object transform(IF1 f, Object o) {
      ping();
      {
        Object __1 = f.get(o);
        if (__1 != null)
          return __1;
      }
      IF1 recurse = asFunction(f);
      for (StructureHandler h : unnull(structureHandlers)) {
        ping();
        {
          Object __2 = h.transform(o, recurse);
          if (__2 != null)
            return __2;
        }
      }
      return o;
    }

    public void visit(IVF1 f, Object o) {
      ping();
      f.get(o);
      IVF1 recurse = x -> visit(f, x);
      for (StructureHandler h : unnull(structureHandlers)) {
        ping();
        h.visit(o, recurse);
      }
    }

    public IF1 asFunction(IF1 f) {
      return o -> transform(f, o);
    }

    public boolean any(IF1<Object, Boolean> pred, Object o) {
      Flag flag = new Flag();
      withCancelPoint(cp -> visit(x -> {
        if (pred.get(x)) {
          flag.raise();
          cancelTo(cp);
        }
      }, o));
      return flag.isUp();
    }
  }

  static public <A extends Concept> A highestConceptByField(Class<A> c, String field) {
    return highestConceptByField(db_mainConcepts(), c, field);
  }

  static public <A extends Concept> A highestConceptByField(Concepts concepts, Class<A> c, String field) {
    IFieldIndex<A, Object> index = concepts.getFieldIndex(c, field);
    if (index instanceof ConceptFieldIndexDesc) {
      Map.Entry e = ((NavigableMap) ((ConceptFieldIndexDesc) index).valueToObject.data).firstEntry();
      return e == null ? null : (A) first((Collection) e.getValue());
    }
    return highestByField(field, concepts.list(c));
  }

  static public <A extends Concept> List<A> sortedByConceptIDDesc(Collection<A> c) {
    return sortedByCalculatedFieldDesc(__116 -> conceptID(__116), c);
  }

  static public String joinNemptiesWithColon(String... strings) {
    return joinNempties(": ", strings);
  }

  static public String joinNemptiesWithColon(Collection<String> strings) {
    return joinNempties(": ", strings);
  }

  static public long parseLongOpt_pcall(String s) {
    try {
      return isInteger(s) ? parseLong(s) : 0;
    } catch (Throwable __e) {
      print(exceptionToStringShort(__e));
    }
    return 0;
  }

  static public String addPlusToCount(long max, long n, String s) {
    if (n != max)
      return s;
    return insertString(s, smartIndexOfSpaceEtc(s), "+");
  }

  static public <A, B> Map<A, B> withoutKey(Map<A, B> map, A key) {
    return mapWithoutKey(map, key);
  }

  static public <A, B> Map<A, B> withoutKey(A key, Map<A, B> map) {
    return withoutKey(map, key);
  }

  static public List<String> stringToStringListOpt(IF1<String, List<String>> f, Object o) {
    if (o instanceof String)
      return f.get(((String) o));
    return (List) o;
  }

  static public List<String> tok_identifiersInOrder(String s) {
    return filter(__117 -> isIdentifier(__117), javaTokC(s));
  }

  static public <A extends Concept> Pair<A, Boolean> uniq2(Class<A> c, Object... params) {
    return uniq2(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> Pair<A, Boolean> uniq2(Concepts cc, Class<A> c, Object... params) {
    AutoCloseable __1 = tempDBLock(cc);
    try {
      params = expandParams(c, params);
      A x = findConceptWhere(cc, c, params);
      if (x == null) {
        x = unlisted(c);
        csetAll(x, params);
        cc.register(x);
        return pair(x, true);
      }
      return pair(x, false);
    } finally {
      _close(__1);
    }
  }

  static public List<Long> allToLong(Collection l) {
    return lmap(__118 -> toLong(__118), l);
  }

  static public List<String> tok_integersInOrder(String s) {
    return filter(__119 -> isInteger(__119), javaTokC(s));
  }

  static public boolean isProperlyQuoted(String s) {
    return s.length() >= 2 && s.startsWith("\"") && s.endsWith("\"") && (!s.endsWith("\\\"") || s.endsWith("\\\\\"")) && !containsNewLine(s);
  }

  static public Map safeUnstructureMap(String s) {
    return (Map) safeUnstructure(s);
  }

  static public <A, B> Map<A, B> onlyKeys(Map<A, B> map, Collection<A> keys) {
    Set<A> keySet = asSet(keys);
    return filterKeys(map, a -> contains(keySet, a));
  }

  static public <A, B> Map<A, B> onlyKeys(Map<A, B> map, A... keys) {
    return onlyKeys(map, litset(keys));
  }

  static public <A, B> B getAndRemove(Map<A, B> map, A a) {
    if (!containsKey(map, a))
      return null;
    B b = map.get(a);
    map.remove(a);
    return b;
  }

  static public <A, B> B getAndRemove(A a, Map<A, B> map) {
    return getAndRemove(map, a);
  }

  static public String sortLinesAlphaNumIC(String s) {
    return lines_possiblyRTrim(s, sortedAlphanumIC(lines(s)));
  }

  static public String unquoteAllLines(String s) {
    return linesPreservingTrailingNewLine(s, unquoteAll(lines(s)));
  }

  static public <A, B> Either<A, B> eitherB(B b) {
    return new Either(2, b);
  }

  static public <A, B> Either<A, B> eitherA(A a) {
    return new Either(1, a);
  }

  static public GlobalID aGlobalIDObjUnlessLoading() {
    return dynamicObjectIsLoading() ? null : aGlobalIDObj();
  }

  static public Map prependEmptyOptionForHSelect(Map map) {
    Map map2 = litorderedmap("", "");
    putAll(map2, map);
    return map2;
  }

  static public LinkedHashMap mapToOrderedMap(Object f, Iterable l) {
    LinkedHashMap map = new LinkedHashMap();
    for (Object o : unnull(l)) {
      Pair p = (Pair) (callF(f, o));
      map.put(p.a, p.b);
    }
    return map;
  }

  static public <A, B, C> LinkedHashMap<B, C> mapToOrderedMap(IF1<A, Pair<B, C>> f, Iterable<A> l) {
    LinkedHashMap<B, C> map = new LinkedHashMap();
    for (A o : unnull(l)) {
      Pair<B, C> p = callF(f, o);
      map.put(p.a, p.b);
    }
    return map;
  }

  static public <A, B, C> LinkedHashMap<B, C> mapToOrderedMap(Iterable<A> l, IF1<A, Pair<B, C>> f) {
    return mapToOrderedMap(f, l);
  }

  static public boolean conceptsSortedByFieldCI_verbose = false;

  static public <A extends Concept> Collection<A> conceptsSortedByFieldCI(Class<A> c, String field) {
    return conceptsSortedByFieldCI(db_mainConcepts(), c, field);
  }

  static public <A extends Concept> Collection<A> conceptsSortedByFieldCI(Concepts concepts, Class<A> c, String field) {
    IFieldIndex<A, Object> index = concepts.getCIFieldIndex(c, field);
    if (index instanceof ConceptFieldIndexCI)
      return (Collection<A>) asList(((ConceptFieldIndexCI) index).objectIterator());
    if (conceptsSortedByFieldCI_verbose)
      print("conceptsSortedByFieldCI_verbose: Manual sort of " + c + " for " + field);
    return sortedByFieldIC(field, concepts.list(c));
  }

  static public String hselect(String name, Map map, Object... params) {
    return hselect(map, paramsPlus_skipFirst(params, "name", name));
  }

  static public String hselect(Map map, Object... params) {
    StringBuilder buf = new StringBuilder();
    String selected = null;
    if (odd(l(params))) {
      selected = str(first(params));
      params = dropFirst(params);
    }
    int i = indexOf(params, "allowEmpty");
    if (even(i)) {
      buf.append("<option></option>\n");
      params[i] = params[i + 1] = null;
    }
    if (nempty(map))
      for (Object key : keys(map)) {
        Object value = map.get(key);
        String k = str(key);
        buf.append(tag("option", htmlencode(str(or(value, ""))), "value", k, "selected", eq(selected, k) ? "selected" : null)).append("\n");
      }
    return tag("select", buf, params) + "\n";
  }

  static public String hquery(Map params) {
    return htmlQuery(params);
  }

  static public String hquery(Object... data) {
    return htmlQuery(data);
  }

  static public String loadJQuery() {
    return "<script src=\"https://code.jquery.com/jquery-1.10.2.js\"></script>";
  }

  static public String hscriptsrc(String src) {
    return hjavascript_src(src);
  }

  static public boolean conceptsWithFieldGreaterThan_verbose = false;

  static public <A extends Concept> Collection<A> conceptsWithFieldGreaterThan(Class<A> c, String field, Object value) {
    return conceptsWithFieldGreaterThan(db_mainConcepts(), c, field, value);
  }

  static public <A extends Concept> Collection<A> conceptsWithFieldGreaterThan(Concepts concepts, Class<A> c, String field, Object value) {
    IFieldIndex<A, Object> index = concepts.getFieldIndex(c, field);
    if (index instanceof ConceptFieldIndexDesc)
      return ((ConceptFieldIndexDesc) index).objectsWithValueGreaterThan(value);
    if (conceptsWithFieldGreaterThan_verbose)
      print("conceptsWithFieldGreaterThan: table scan of " + c + " for field " + field);
    return objectsWhereFieldGreaterThan(concepts.list(c), field, value);
  }

  static public String hhiddenWithID(String id) {
    return hhiddenWithID(id, null);
  }

  static public String hhiddenWithID(String id, Object value, Object... params) {
    return tag("input", "", paramsPlus(params, "type", "hidden", "id", id, "value", value));
  }

  static public String hsimpletableheader(String... cols) {
    return tag("tr", join(lambdaMap(__120 -> th(__120), cols)));
  }

  static public <A> List<A> lastTwo(List<A> l) {
    return takeLast(2, l);
  }

  static public String hscript_clickableRows() {
    return hscript("\r\n    jQuery(document).ready(function($) {\r\n      $(\".clickable-row\").click(function() {\r\n        window.location = $(this).data(\"href\");\r\n      });\r\n    });\r\n  ");
  }

  static public String hcheckboxWithText(String name, String text, boolean checked, Object... params) {
    String id = randomID();
    return hcheckbox(name, checked, paramsPlus(params, "id", id)) + " " + hlabelFor(id, htmlEncode2(text));
  }

  static public String hcheckboxWithText(String name, String text) {
    return hcheckboxWithText(name, text, false);
  }

  static public String hdivWithID(String id, Object contents, Object... params) {
    return hdiv(contents, paramsPlus(params, "id", id));
  }

  static public String hdesktopNotifications() {
    return hscript("\r\n    function sendDesktopNotification(text, options) {\r\n      if (\"Notification\" in window && Notification.permission === \"granted\")\r\n        new Notification(text, options);\r\n    }\r\n    window.sendDesktopNotification = sendDesktopNotification;\r\n    \r\n    function initDesktopNotifications() {\r\n      if (!(\"Notification\" in window))\r\n        $(\"#notiStatus\").html(\"Desktop notifications not supported in this browser\");\r\n      else if (Notification.permission === \"granted\")\r\n        $(\"#notiStatus\").html(\"Desktop notifications enabled\");\r\n      else if (Notification.permission === \"denied\")\r\n        $(\"#notiStatus\").html(\"Desktop notifications denied\");\r\n      else {\r\n        $(\"#notiStatus\").html(\"Requesting permission for desktop notifications\");\r\n        Notification.requestPermission().then(function (permission) {\r\n          initDesktopNotifications();\r\n          sendDesktopNotification(\"Notifications will look like this!\");\r\n        });\r\n      }\r\n    }\r\n    \r\n    $(document).ready(initDesktopNotifications);\r\n  ");
  }

  static public String hframeset_cols(String cols, Object contents, Object... params) {
    return tag("frameset", contents, paramsPlus(params, "cols", cols));
  }

  static public String hframeset_rows(String rows, Object contents, Object... params) {
    return tag("frameset", contents, paramsPlus(params, "rows", rows));
  }

  static public String htmlEncode2If(boolean b, String s) {
    return b ? htmlEncode2(s) : s;
  }

  static public JPanel centerAndSouthWithMargins(Component c, Component s) {
    return applyDefaultMargin(centerAndSouth(c, withTopMargin(s)));
  }

  static public JPanel jrightalignedline(Component... components) {
    return jrightAlignedLine(components);
  }

  static public JPanel jrightalignedline(List<Component> components) {
    return jrightAlignedLine(components);
  }

  static public JCheckBox dm_fieldCheckBox(String field) {
    return dm_fieldCheckBox(humanizeFormLabel(field), field);
  }

  static public JCheckBox dm_fieldCheckBox(String text, String field) {
    if (isIdentifier(text) && !isIdentifier(field)) {
      String temp = field;
      field = text;
      text = temp;
    }
    return jLiveValueCheckBox(text, dm_fieldLiveValue(field));
  }

  static public void addComponentsFirst(Container c, Component... l) {
    containerAddFirst(c, l);
  }

  static public int hashOfLong(long l) {
    return Long.hashCode(l);
  }

  static public int length(Object[] array) {
    return array == null ? 0 : array.length;
  }

  static public int length(List list) {
    return list == null ? 0 : list.size();
  }

  static public int length(String s) {
    return s == null ? 0 : s.length();
  }

  static public boolean isAllDigits(String s) {
    int n = l(s);
    for (int i = 0; i < n; i++) if (!isDigit(s.charAt(i)))
      return false;
    return true;
  }

  static public <A> List<A> replaceAll(List<A> l, final A a, final A b) {
    return map(l, new F1<A, A>() {

      public A get(A x) {
        try {
          return eq(x, a) ? b : x;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "eq(x, a) ? b : x";
      }
    });
  }

  static public String replaceAll(String s, String a, String b) {
    return s == null ? null : s.replaceAll(a, b);
  }

  static public String longestPrefixInNavigableSet(String s, NavigableSet<String> set) {
    if (set == null || s == null)
      return null;
    while (licensed()) {
      String key = set.floor(s);
      if (key == null)
        break;
      int n = lCommonPrefix(key, s);
      if (n == l(key))
        return key;
      s = takeFirst(s, n);
    }
    return null;
  }

  static public <A, B> NavigableSet<A> navigableKeys(NavigableMap<A, B> map) {
    return map == null ? new TreeSet() : map.navigableKeySet();
  }

  static public <A> NavigableSet<A> navigableKeys(MultiSet<A> ms) {
    return ((NavigableMap) ms.map).navigableKeySet();
  }

  static public <A, B> NavigableSet<A> navigableKeys(MultiMap<A, B> mm) {
    return ((NavigableMap) mm.data).navigableKeySet();
  }

  static public Cache<MultiMap<String, CountryDialCode>> countryDialCodes_rawNumbersTreeMultiMap_cache = new Cache<>(() -> countryDialCodes_rawNumbersTreeMultiMap_load());

  static public MultiMap<String, CountryDialCode> countryDialCodes_rawNumbersTreeMultiMap() {
    return countryDialCodes_rawNumbersTreeMultiMap_cache.get();
  }

  static public MultiMap<String, CountryDialCode> countryDialCodes_rawNumbersTreeMultiMap_load() {
    return mapToMultiMap(mapKeys(__121 -> digitsOnly(__121), multiMapToMap(countryDialCodesMultiMap())));
  }

  static public String getSnippetTitle_safe(String id) {
    if (isLocalSnippetID(id))
      return localSnippetTitle(id);
    String title = or(loadTextFile(snippetTitle_cacheFile(id)), "?");
    try {
      title = getSnippetTitle(id);
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return title;
  }

  static public <A extends JSpinner> A onChange(A spinner, Object r) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            spinner.addChangeListener(changeListener(r));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "spinner.addChangeListener(changeListener(r));";
        }
      });
    }
    return spinner;
  }

  static public <A extends AbstractButton> A onChange(A b, Object r) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            b.addItemListener(itemListener(r));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "b.addItemListener(itemListener(r));";
        }
      });
    }
    return b;
  }

  static public void onChange(JTextComponent tc, Object r) {
    onUpdate(tc, r);
  }

  static public <A extends JSlider> A onChange(A slider, final Object r) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            slider.addChangeListener(changeListener(r));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "slider.addChangeListener(changeListener(r));";
        }
      });
    }
    return slider;
  }

  static public JComboBox onChange(Object r, JComboBox cb) {
    return onChange(cb, r);
  }

  static public JComboBox onChange(JComboBox cb, final Object r) {
    if (isEditableComboBox(cb))
      onChange(textFieldFromComboBox(cb), r);
    else
      onSelectedItem(cb, new VF1<String>() {

        public void get(String s) {
          try {
            callF(r);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "callF(r)";
        }
      });
    return cb;
  }

  static public int toIntPercent(double ratio) {
    return roundToInt(ratio * 100);
  }

  static public int toIntPercent(float ratio) {
    return toIntPercent((double) ratio);
  }

  static public Type getRawType(Type t) {
    if (t instanceof ParameterizedType)
      return ((ParameterizedType) t).getRawType();
    return t;
  }

  static public <A> A highestByField(String field, Collection<A> l) {
    A best = null;
    Object bestValue = null;
    if (l != null)
      for (A a : l) {
        Object val = getOpt(a, field);
        if (val != null && (bestValue == null || cmp(val, bestValue) > 0)) {
          best = a;
          bestValue = val;
        }
      }
    return best;
  }

  static public <A> A highestByField(Collection<A> l, String field) {
    return highestByField(field, l);
  }

  static public String insertString(String a, int idx, String b) {
    return spliceString(a, idx, idx, b);
  }

  static public int smartIndexOfSpaceEtc(String s) {
    int i = indexOfSpaceEtc(s);
    return i < 0 ? l(s) : i;
  }

  static public <A, B> Map<A, B> mapWithoutKey(Map<A, B> map, A key) {
    if (map == null || !map.containsKey(key))
      return map;
    Map m = cloneMap(map);
    m.remove(key);
    return m;
  }

  static public <A, B> Map<A, B> mapWithoutKey(A key, Map<A, B> map) {
    return mapWithoutKey(map, key);
  }

  static public String lines_possiblyRTrim(String originalText, List<String> lines) {
    return endsWithNewLine(originalText) ? lines(lines) : lines_rtrim(lines);
  }

  static public String lines_possiblyRTrim(List<String> lines, String originalText) {
    return lines_possiblyRTrim(originalText, lines);
  }

  static public List<String> sortedAlphanumIC(Collection<String> c) {
    List<String> l = cloneList(c);
    Collections.sort(l, alphaNumComparatorIC());
    return l;
  }

  static public String linesPreservingTrailingNewLine(String original, List<String> lines) {
    String s = lines(lines);
    return endsWith(original, "\n") ? s : dropSuffix("\n", s);
  }

  static public List<String> unquoteAll(List<String> l) {
    List<String> t = cloneList(l);
    for (int i = 0; i < l(t); i++) if (isQuoted(t.get(i)))
      t.set(i, unquote(t.get(i)));
    return t;
  }

  static public GlobalID aGlobalIDObj() {
    return asGlobalID(randomID(16));
  }

  static public GlobalID aGlobalIDObj(Random random) {
    return asGlobalID(randomID(random, 16));
  }

  static public <A> List<A> sortedByFieldIC(Collection<A> c, final String field) {
    List<A> l = new ArrayList(c);
    sort(l, new Comparator<A>() {

      public int compare(A a, A b) {
        return compareIC((String) getOpt(a, field), (String) getOpt(b, field));
      }
    });
    return l;
  }

  static public <A> List<A> sortedByFieldIC(String field, Collection<A> c) {
    return sortedByFieldIC(c, field);
  }

  static public Object[] paramsPlus_skipFirst(Object[] a1, Object... a2) {
    if (odd(l(a1)))
      return itemPlusArray(first(a1), paramsPlus(dropFirst(a1), a2));
    return paramsPlus(a1, a2);
  }

  static public String th(Object contents, Object... params) {
    return tag("th", contents, params);
  }

  static public String hlabelFor(String id, Object contents) {
    return htag("label", contents, "for", id);
  }

  static public <A extends JComponent> A applyDefaultMargin(final A c) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            c.setBorder(BorderFactory.createEmptyBorder(withMargin_defaultWidth, withMargin_defaultWidth, withMargin_defaultWidth, withMargin_defaultWidth));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "c.setBorder(BorderFactory.createEmptyBorder(withMargin_defaultWidth, withMarg...";
        }
      });
    }
    return c;
  }

  static public JPanel centerAndSouth(final Component c, final Component s) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel panel = new JPanel(new BorderLayout());
          panel.add(BorderLayout.CENTER, wrap(c));
          if (s != null)
            panel.add(BorderLayout.SOUTH, wrap(s));
          return panel;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel panel = new JPanel(new BorderLayout);\r\n    panel.add(BorderLayout.CENT...";
      }
    });
  }

  static public int withTopMargin_defaultWidth = 6;

  static public JPanel withTopMargin(Component c) {
    return withTopMargin(withTopMargin_defaultWidth, c);
  }

  static public JPanel withTopMargin(final int w, final Component c) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel p = new JPanel(new BorderLayout());
          p.setBorder(BorderFactory.createEmptyBorder(w, 0, 0, 0));
          p.add(c);
          return p;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel p = new JPanel(new BorderLayout);\r\n    p.setBorder(BorderFactory.creat...";
      }
    });
  }

  static public JPanel jrightAlignedLine(final Component... components) {
    return swing(new F0<RightAlignedLine>() {

      public RightAlignedLine get() {
        try {
          return new RightAlignedLine(components);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret RightAlignedLine(components);";
      }
    });
  }

  static public JPanel jrightAlignedLine(List<? extends Component> components) {
    return jrightAlignedLine(asArray(Component.class, components));
  }

  static public JCheckBox jLiveValueCheckBox(String text, final SimpleLiveValue<Boolean> lv) {
    final JCheckBox cb = jCheckBox(text);
    bindCheckBoxToLiveValue(cb, lv);
    return cb;
  }

  static public SimpleLiveValue dm_fieldLiveValue(String fieldName) {
    return dm_fieldLiveValue(dm_current_mandatory(), fieldName);
  }

  static public SimpleLiveValue dm_fieldLiveValue(final DynModule module, final String fieldName) {
    Lock __0 = module.lock;
    lock(__0);
    try {
      AutoCloseable __2 = module.enter();
      try {
        Class type = getFieldType(module, fieldName);
        final SimpleLiveValue value = new SimpleLiveValue(type, get(module, fieldName));
        dm_watchField(fieldName, new Runnable() {

          public void run() {
            try {
              Object o = get(module, fieldName);
              value.set(o);
              ;
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "ifdef dm_fieldLiveValue_debug\r\n      print(\"dm_fieldLiveValue: setting \" + fi...";
          }
        });
        value.onChange(new Runnable() {

          public void run() {
            try {
              module.setField(fieldName, value.get());
              ;
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "ifdef dm_fieldLiveValue_debug\r\n      print(\"dm_fieldLiveValue: setting 2 \" + ...";
          }
        });
        return value;
      } finally {
        _close(__2);
      }
    } finally {
      unlock(__0);
    }
  }

  static public void containerAddFirst(final Container c, final Component... l) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            for (int i = 0; i < l(l); i++) c.add(l[i], i);
            revalidate(c);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "for (int i = 0; i < l(l); i++)\r\n      c.add(l[i], i);\r\n    revalidate(c);";
        }
      });
    }
  }

  static public int lCommonPrefix(String a, String b) {
    int i = 0, n = Math.min(l(a), l(b));
    while (i < n && a.charAt(i) == b.charAt(i)) ++i;
    return i;
  }

  static public <A, B, C extends Collection<B>> MultiMap<A, B> mapToMultiMap(Map<A, C> map) {
    if (map == null)
      return null;
    MultiMap<A, B> mm = similarEmptyMultiMap(map);
    for (Map.Entry<? extends A, ? extends Collection<B>> __0 : _entrySet(map)) {
      A key = __0.getKey();
      Collection<B> values = __0.getValue();
      mm.putAll(key, values);
    }
    return mm;
  }

  static public String digitsOnly(String s) {
    return filterChars(__122 -> isDigit(__122), s);
  }

  static public ChangeListener changeListener(final Object r) {
    return new ChangeListener() {

      public void stateChanged(ChangeEvent e) {
        pcallF(r);
      }
    };
  }

  static public ItemListener itemListener(final Object r) {
    return new ItemListener() {

      public void itemStateChanged(ItemEvent e) {
        pcallF(r);
      }
    };
  }

  static public void onUpdate(JComponent c, final Object r) {
    if (c instanceof JTextComponent)
      ((JTextComponent) c).getDocument().addDocumentListener(new DocumentListener() {

        public void insertUpdate(DocumentEvent e) {
          call(r);
        }

        public void removeUpdate(DocumentEvent e) {
          call(r);
        }

        public void changedUpdate(DocumentEvent e) {
          call(r);
        }
      });
    else if (c instanceof ItemSelectable)
      ((ItemSelectable) c).addItemListener(new ItemListener() {

        public void itemStateChanged(ItemEvent e) {
          call(r);
        }
      });
    else
      print("Warning: onUpdate doesn't know " + getClassName(c));
  }

  static public void onUpdate(List<? extends JComponent> l, Object r) {
    for (JComponent c : l) onUpdate(c, r);
  }

  static public JTextField textFieldFromComboBox(JComboBox cb) {
    return (JTextField) cb.getEditor().getEditorComponent();
  }

  static public JComboBox onSelectedItem(final JComboBox cb, final VF1<String> f) {
    addActionListener(cb, new Runnable() {

      public void run() {
        try {
          pcallF(f, selectedItem(cb));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pcallF(f, selectedItem(cb))";
      }
    });
    return cb;
  }

  static public int roundToInt(double d) {
    return (int) Math.round(d);
  }

  static public String spliceString(String a, int from, int to, String b) {
    return takeFirst(a, from) + b + substring(a, max(from, to));
  }

  static public String spliceString(String a, int from, int to, char b) {
    return spliceString(a, from, to, str(b));
  }

  static public boolean endsWithNewLine(String s) {
    return endsWith(s, "\n");
  }

  static public AlphanumComparator alphaNumComparatorIC_instance;

  static public Comparator<String> alphaNumComparatorIC() {
    if (alphaNumComparatorIC_instance == null) {
      AlphanumComparator ac = new AlphanumComparator();
      ac.ignoreCase = true;
      alphaNumComparatorIC_instance = ac;
    }
    return alphaNumComparatorIC_instance;
  }

  static public GlobalID asGlobalID(String id) {
    return id == null ? null : new GlobalID(id);
  }

  static public int compareIC(String s1, String s2) {
    return compareIgnoreCase_jdk(s1, s2);
  }

  static public <A> A[] itemPlusArray(A a, A[] l) {
    return singlePlusArray(a, l);
  }

  static public JCheckBox jCheckBox() {
    return swingNu(JCheckBox.class);
  }

  static public JCheckBox jCheckBox(boolean checked) {
    return swingNu(JCheckBox.class, "", checked);
  }

  static public JCheckBox jCheckBox(String text, boolean checked) {
    return swingNu(JCheckBox.class, text, checked);
  }

  static public JCheckBox jCheckBox(String text) {
    return swingNu(JCheckBox.class, text);
  }

  static public JCheckBox jCheckBox(String text, boolean checked, final Object onChange) {
    JCheckBox cb = jCheckBox(checked, onChange);
    cb.setText(text);
    return cb;
  }

  static public JCheckBox jCheckBox(boolean checked, final Object onChange) {
    final JCheckBox cb = jCheckBox(checked);
    cb.addChangeListener(new ChangeListener() {

      public void stateChanged(ChangeEvent e) {
        pcallF(onChange, cb.isSelected());
      }
    });
    return cb;
  }

  static public <A extends JCheckBox> A bindCheckBoxToLiveValue(final A cb, final SimpleLiveValue<Boolean> lv) {
    bindLiveValueListenerToComponent(cb, lv, new Runnable() {

      public void run() {
        try {
          setChecked(cb, isTrue(lv.get()));
          ;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ifdef bindCheckBoxToLiveValue_debug\r\n      print(\"bindCheckBoxToLiveValue: se...";
      }
    });
    onChange(cb, new Runnable() {

      public void run() {
        try {
          lv.set(isChecked(cb));
          ;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ifdef bindCheckBoxToLiveValue_debug\r\n      print(\"bindCheckBoxToLiveValue: se...";
      }
    });
    return cb;
  }

  static public Class getFieldType(Object o, String field) {
    return fieldType(o, field);
  }

  static public void dm_watchField(String field, Runnable onChange) {
    new Dyn_FieldWatcher(dm_current_mandatory(), field, onChange);
  }

  static public MultiMap similarEmptyMultiMap(MultiMap m) {
    return similarEmptyMultiMap(m == null ? null : m.data);
  }

  static public MultiMap similarEmptyMultiMap(Map m) {
    MultiMap mm = new MultiMap();
    if (m != null)
      mm.data = similarEmptyMap(m);
    return mm;
  }

  static public String filterChars(IF1<Character, Boolean> pred, String s) {
    if (s == null)
      return null;
    StringBuilder buf = new StringBuilder();
    int n = l(s);
    char c;
    for (int i = 0; i < n; i++) if (isTrue(callF(pred, c = s.charAt(i))))
      buf.append(c);
    return str(buf);
  }

  static public String selectedItem(JList l) {
    return getSelectedItem(l);
  }

  static public String selectedItem(JComboBox cb) {
    return getSelectedItem(cb);
  }

  static public int compareIgnoreCase_jdk(String s1, String s2) {
    if (s1 == null)
      return s2 == null ? 0 : -1;
    if (s2 == null)
      return 1;
    int n1 = s1.length();
    int n2 = s2.length();
    int min = Math.min(n1, n2);
    for (int i = 0; i < min; i++) {
      char c1 = s1.charAt(i);
      char c2 = s2.charAt(i);
      if (c1 != c2) {
        c1 = Character.toUpperCase(c1);
        c2 = Character.toUpperCase(c2);
        if (c1 != c2) {
          c1 = Character.toLowerCase(c1);
          c2 = Character.toLowerCase(c2);
          if (c1 != c2)
            return c1 - c2;
        }
      }
    }
    return n1 - n2;
  }

  static public <A> A[] singlePlusArray(A a, A[] l) {
    A[] out = newObjectArrayOfSameType(l, l(l) + 1);
    out[0] = a;
    arraycopy(l, 0, out, 1, l(l));
    return out;
  }

  static public void setChecked(JCheckBox checkBox, boolean b) {
    if (checkBox != null) {
      swing(new Runnable() {

        public void run() {
          try {
            if (isChecked(checkBox) != b)
              checkBox.setSelected(b);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (isChecked(checkBox) != b)\r\n      checkBox.setSelected(b);";
        }
      });
    }
  }

  static public void setChecked(JCheckBoxMenuItem mi, boolean b) {
    if (mi != null) {
      swing(new Runnable() {

        public void run() {
          try {
            mi.setSelected(b);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "mi.setSelected(b);";
        }
      });
    }
  }

  static public class SimpleLiveValue<A> extends LiveValue<A> {

    public Class<A> type;

    volatile public A value;

    transient public List onChange = synchroList();

    public SimpleLiveValue(Class<A> type) {
      this.type = type;
    }

    public SimpleLiveValue(Class<A> type, A value) {
      this.value = value;
      this.type = type;
    }

    public Class<A> getType() {
      return type;
    }

    public A get() {
      return value;
    }

    public void onChange(Runnable l) {
      onChange.add(l);
    }

    public void onChangeAndNow(Runnable l) {
      onChange(l);
      callF(l);
    }

    public void removeOnChangeListener(Runnable l) {
      onChange.remove(l);
    }

    public void fireChanged() {
      pcallFAll(onChange);
    }

    public void set(A a) {
      if (neq(value, a)) {
        value = a;
        fireChanged();
      }
    }
  }

  static public class Dyn_FieldWatcher {

    public DynModule module;

    public String field;

    public Object value;

    public Runnable action;

    transient public IF1<Object, Object> cloneValue;

    public Object cloneValue(Object o) {
      return cloneValue != null ? cloneValue.get(o) : cloneValue_base(o);
    }

    final public Object cloneValue_fallback(IF1<Object, Object> _f, Object o) {
      return _f != null ? _f.get(o) : cloneValue_base(o);
    }

    public Object cloneValue_base(Object o) {
      return o;
    }

    public Dyn_FieldWatcher(DynModule module, String field, Runnable action) {
      this(module, field, action, null);
    }

    public Dyn_FieldWatcher(DynModule module, String field, Runnable action, IF1 cloneValue) {
      this.cloneValue = cloneValue;
      this.action = action;
      this.field = field;
      this.module = module;
      value = cloneValue(get(module, field));
      module.onChange(new Runnable() {

        public void run() {
          try {
            check();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "check();";
        }
      });
      module.onFieldChange(new VF1<String>() {

        public void get(String f) {
          try {
            if (eq(f, field))
              check();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (eq(f, field))\r\n        check();";
        }
      });
    }

    public void check() {
      Object newValue = cloneValue(get(module, field));
      if (eq(value, newValue))
        return;
      value = newValue;
      dm_q(module, action);
    }
  }

  static public class RightAlignedLine extends JPanel {

    public RightAlignedLine(Component... components) {
      setLayout(LetterLayout.rightAlignedRow());
      for (Component component : components) add(component);
    }

    public void add(String text) {
      add(new JLabel(text));
    }
  }

  static public class LetterLayout implements LayoutManager {

    public String[] lines;

    public Map<String, Component> map = new TreeMap<String, Component>();

    public RC[] rows;

    public RC[] cols;

    public Cell[][] cells;

    public int spacingX = 10, spacingY = 10;

    public int insetTop, insetBottom, insetLeft, insetRight;

    public int template;

    public boolean formWideLeftSide, formWideRightSide;

    static final public int STALACTITE = 1, LEFT_ALIGNED_ROW = 2, CENTERED_ROW = 3, FORM = 4, RIGHT_ALIGNED_ROW = 5;

    public boolean debug = false;

    public void setLeftBorder(int border) {
      insetLeft = border;
    }

    public void setRightBorder(int border) {
      insetRight = border;
    }

    public static JComponent withBorder(JComponent component, int border) {
      JPanel panel = new JPanel(new LetterLayout("C").setBorder(border));
      panel.add("C", component);
      return panel;
    }

    public static JPanel panel(String... lines) {
      return new JPanel(new LetterLayout(lines));
    }

    public static JPanel stalactitePanel() {
      return new JPanel(stalactite());
    }

    static public class DummyComponent extends JComponent {
    }

    static public class Cell {

      public boolean aux = false;

      public int minWidth, minHeight;

      public Component component;

      public int colspan, rowspan;

      public double weightX, weightY;
    }

    static public class RC {

      public int min;

      public double weightSum;

      public int start;

      public int minEnd;
    }

    public LetterLayout(int template) {
      this.template = template;
    }

    public LetterLayout(String... lines) {
      this.lines = lines;
    }

    public void removeLayoutComponent(Component component) {
      map.values().remove(component);
    }

    public void layoutContainer(Container container) {
      prepareLayout(container);
      if (debug)
        System.out.println("Container size: " + container.getSize());
      Insets insets = getInsets(container);
      for (int r = 0; r < rows.length; r++) {
        for (int i = 0; i < cols.length; ) {
          Cell cell = cells[i][r];
          if (cell.aux)
            ++i;
          else {
            if (cell.component != null) {
              int x1 = cols[i].start;
              int y1 = rows[r].start;
              int x2 = i + cell.colspan < cols.length ? cols[i + cell.colspan].start - spacingX : container.getWidth() - insets.right;
              int y2 = r + cell.rowspan < rows.length ? rows[r + cell.rowspan].start - spacingY : container.getHeight() - insets.bottom;
              if (debug)
                System.out.println("Layouting (" + i + ", " + r + ", " + cell.component.getClass().getName() + "): " + x1 + " " + y1 + " " + x2 + " " + y2);
              cell.component.setBounds(x1, y1, x2 - x1, y2 - y1);
            }
            i += cells[i][r].colspan;
          }
        }
      }
    }

    final public void prepareLayout(Container container) {
      applyTemplate(container);
      int numRows = lines.length, numCols = lines[0].length();
      for (int i = 1; i < numRows; i++) if (lines[i].length() != numCols)
        throw new IllegalArgumentException("Lines have varying length");
      cells = new Cell[numCols][numRows];
      rows = new RC[numRows];
      cols = new RC[numCols];
      for (int r = 0; r < numRows; r++) rows[r] = new RC();
      for (int i = 0; i < numCols; i++) cols[i] = new RC();
      for (int r = 0; r < numRows; r++) for (int i = 0; i < numCols; i++) cells[i][r] = new Cell();
      for (int r = 0; r < numRows; r++) {
        String line = lines[r];
        for (int i = 0; i < numCols; ) {
          Cell cell = cells[i][r];
          if (cell.aux) {
            ++i;
            continue;
          }
          char ch = line.charAt(i);
          int iNext = i;
          do ++iNext; while (iNext < numCols && ch == line.charAt(iNext));
          int rNext = r;
          do ++rNext; while (rNext < numRows && ch == lines[rNext].charAt(i));
          cell.weightX = numCols == 1 || iNext > i + 1 ? 1.0 : 0.0;
          cell.weightY = numRows == 1 || rNext > r + 1 ? 1.0 : 0.0;
          Component c = map.get(String.valueOf(ch));
          cell.component = c;
          if (c != null) {
            cell.minWidth = c.getMinimumSize().width + spacingX;
            cell.minHeight = getMinimumHeight(c) + spacingY;
          }
          cell.colspan = iNext - i;
          cell.rowspan = rNext - r;
          if (cell.colspan == 1)
            cols[i].min = Math.max(cols[i].min, cell.minWidth);
          if (cell.rowspan == 1)
            rows[r].min = Math.max(rows[r].min, cell.minHeight);
          for (int r2 = r; r2 < rNext; r2++) for (int i2 = i; i2 < iNext; i2++) if (r2 != r || i2 != i)
            cells[i2][r2].aux = true;
          i = iNext;
        }
      }
      while (true) {
        for (int i = 0; i < numCols; i++) {
          int minStart = i == 0 ? 0 : cols[i - 1].minEnd;
          double weightStart = i == 0 ? 0.0 : cols[i - 1].weightSum;
          for (int r = 0; r < numRows; r++) {
            Cell cell = cells[i][r];
            if (!cell.aux) {
              RC rc = cols[i + cell.colspan - 1];
              rc.minEnd = Math.max(rc.minEnd, minStart + cell.minWidth);
              rc.weightSum = Math.max(rc.weightSum, weightStart + cell.weightX);
            }
          }
        }
        for (int r = 0; r < numRows; r++) {
          int minStart = r == 0 ? 0 : rows[r - 1].minEnd;
          double weightStart = r == 0 ? 0.0 : rows[r - 1].weightSum;
          for (int i = 0; i < numCols; i++) {
            Cell cell = cells[i][r];
            if (!cell.aux) {
              RC rc = rows[r + cell.rowspan - 1];
              rc.minEnd = Math.max(rc.minEnd, minStart + cell.minHeight);
              rc.weightSum = Math.max(rc.weightSum, weightStart + cell.weightY);
            }
          }
        }
        if (allWeightsZero(cols)) {
          for (int r = 0; r < numRows; r++) for (int i = 0; i < numCols; i++) cells[i][r].weightX = 1.0;
          continue;
        }
        if (allWeightsZero(rows)) {
          for (int r = 0; r < numRows; r++) for (int i = 0; i < numCols; i++) cells[i][r].weightY = 1.0;
          continue;
        }
        break;
      }
      Insets insets = getInsets(container);
      determineStarts(cols, insets.left, container.getWidth() - insets.left - insets.right + spacingX, spacingX);
      determineStarts(rows, insets.top, container.getHeight() - insets.top - insets.bottom + spacingY, spacingY);
    }

    final public boolean allWeightsZero(RC[] rcs) {
      for (int i = 0; i < rcs.length; i++) if (rcs[i].weightSum != 0.0)
        return false;
      return true;
    }

    static public int getMinimumHeight(Component c) {
      return c.getMinimumSize().height;
    }

    final public void applyTemplate(Container container) {
      if (template == STALACTITE) {
        Component[] components = container.getComponents();
        lines = new String[components.length + 2];
        map.clear();
        for (int i = 0; i < components.length; i++) {
          String s = String.valueOf(makeIndexChar(i));
          map.put(s, components[i]);
          lines[i] = s;
        }
        lines[components.length] = lines[components.length + 1] = " ";
      } else if (template == FORM) {
        Component[] components = container.getComponents();
        int numRows = components.length / 2;
        lines = new String[numRows + 2];
        map.clear();
        for (int row = 0; row < numRows; row++) {
          String lower = String.valueOf(makeIndexChar(row));
          String upper = String.valueOf(makeAlternateIndexChar(row));
          Component rightComponent = components[row * 2 + 1];
          if (rightComponent instanceof DummyComponent)
            upper = lower;
          lines[row] = (formWideLeftSide ? lower + lower : lower) + (formWideRightSide ? upper + upper : upper);
          map.put(lower, components[row * 2]);
          if (!(rightComponent instanceof DummyComponent))
            map.put(upper, rightComponent);
        }
        lines[numRows] = lines[numRows + 1] = (formWideLeftSide ? "  " : " ") + (formWideRightSide ? "  " : " ");
      } else if (template == LEFT_ALIGNED_ROW) {
        lines = new String[] { makeSingleRow(container) + RIGHT_CHAR + RIGHT_CHAR };
      } else if (template == CENTERED_ROW) {
        lines = new String[] { "" + LEFT_CHAR + LEFT_CHAR + makeSingleRow(container) + RIGHT_CHAR + RIGHT_CHAR };
      } else if (template == RIGHT_ALIGNED_ROW) {
        lines = new String[] { "" + LEFT_CHAR + LEFT_CHAR + makeSingleRow(container) };
      }
    }

    final public String makeSingleRow(Container container) {
      Component[] components = container.getComponents();
      StringBuffer buf = new StringBuffer();
      map.clear();
      for (int i = 0; i < components.length; i++) {
        String s = String.valueOf(makeAlternateIndexChar(i));
        map.put(s, components[i]);
        buf.append(s);
      }
      return buf.toString();
    }

    static public void determineStarts(RC[] rcs, int start, int totalSize, int spacing) {
      int minTotal = rcs[rcs.length - 1].minEnd;
      double weightSum = rcs[rcs.length - 1].weightSum;
      int spare = (int) ((totalSize - minTotal) / (weightSum == 0.0 ? 1.0 : weightSum));
      int x = start, minSum = 0;
      double prevWeightSum = 0.0;
      for (int i = 0; i < rcs.length; i++) {
        int width = rcs[i].minEnd - minSum + (int) ((rcs[i].weightSum - prevWeightSum) * spare) - spacing;
        rcs[i].start = x;
        x += width + spacing;
        prevWeightSum = rcs[i].weightSum;
        minSum = rcs[i].minEnd;
      }
    }

    public void addLayoutComponent(String s, Component component) {
      map.put(s, component);
    }

    public Dimension minimumLayoutSize(Container container) {
      prepareLayout(container);
      Insets insets = getInsets(container);
      Dimension result = new Dimension(insets.left + cols[cols.length - 1].minEnd + insets.right - spacingX, insets.top + rows[rows.length - 1].minEnd + insets.bottom - spacingY);
      return result;
    }

    final public Insets getInsets(Container container) {
      Insets insets = container.getInsets();
      return new Insets(insets.top + insetTop, insets.left + insetLeft, insets.bottom + insetBottom, insets.right + insetRight);
    }

    public Dimension preferredLayoutSize(Container container) {
      return minimumLayoutSize(container);
    }

    public LetterLayout setSpacing(int x, int y) {
      spacingX = x;
      spacingY = y;
      return this;
    }

    public LetterLayout setSpacing(int spacing) {
      return setSpacing(spacing, spacing);
    }

    public LetterLayout setBorder(int top, int left, int bottom, int right) {
      insetTop = top;
      insetLeft = left;
      insetBottom = bottom;
      insetRight = right;
      return this;
    }

    public LetterLayout setBorder(int inset) {
      return setBorder(inset, inset, inset, inset);
    }

    public LetterLayout setTopBorder(int inset) {
      insetTop = inset;
      return this;
    }

    public static LetterLayout stalactite() {
      return new LetterLayout(STALACTITE);
    }

    public static LetterLayout leftAlignedRow() {
      return new LetterLayout(LEFT_ALIGNED_ROW);
    }

    public static LetterLayout leftAlignedRow(int spacing) {
      return leftAlignedRow().setSpacing(spacing);
    }

    public static LetterLayout centeredRow() {
      return new LetterLayout(CENTERED_ROW);
    }

    public static LetterLayout rightAlignedRow() {
      return new LetterLayout(RIGHT_ALIGNED_ROW);
    }

    public static JPanel rightAlignedRowPanel(JComponent... components) {
      return makePanel(new LetterLayout(RIGHT_ALIGNED_ROW), components);
    }

    static public JPanel makePanel(LetterLayout letterLayout, JComponent[] components) {
      JPanel panel = new JPanel(letterLayout);
      for (JComponent component : components) {
        panel.add(component);
      }
      return panel;
    }

    public static LetterLayout form() {
      LetterLayout letterLayout = new LetterLayout(FORM);
      letterLayout.formWideLeftSide = true;
      letterLayout.formWideRightSide = true;
      return letterLayout;
    }

    public static LetterLayout formWideRightSide() {
      LetterLayout letterLayout = new LetterLayout(FORM);
      letterLayout.formWideRightSide = true;
      return letterLayout;
    }

    public static Component getDummyComponent() {
      return new DummyComponent();
    }

    public static JPanel newPanel(String... lines) {
      return new JPanel(new LetterLayout(lines));
    }

    public boolean isDebug() {
      return debug;
    }

    public void setDebug(boolean debug) {
      this.debug = debug;
    }

    public static char makeIndexChar(int idx) {
      return (char) ('a' + idx * 2);
    }

    public static char makeAlternateIndexChar(int idx) {
      return (char) ('b' + idx * 2);
    }

    public static char LEFT_CHAR = ',', RIGHT_CHAR = '.';

    public static void main(String[] args) {
      System.out.println((int) makeIndexChar(0));
      System.out.println((int) makeAlternateIndexChar(0));
      System.out.println((int) makeIndexChar(32000));
      System.out.println((int) makeAlternateIndexChar(32000));
      System.out.println((int) LEFT_CHAR);
      System.out.println((int) RIGHT_CHAR);
    }
  }

  static public Q dm_q() {
    return dm_current_mandatory().q();
  }

  static public void dm_q(Runnable r) {
    dm_inQ(r);
  }

  static public void dm_q(DynModule module, Runnable r) {
    module.q().add(r);
  }

  static public <A> A dm_q(IF0<A> f) {
    return dm_evalInQ(if0ToF0(f));
  }

  static public void dm_inQ(Runnable r) {
    dm_q().add(r);
  }

  static public <A> A dm_evalInQ(F0<A> f) {
    return dm_evalInQ(dm_current_mandatory(), f);
  }

  static public <A> A dm_evalInQ(IF0<A> f) {
    return dm_evalInQ(dm_current_mandatory(), if0ToF0(f));
  }

  static public <A> A dm_evalInQ(DynModule module, F0<A> f) {
    return evalInQ(module.q(), f);
  }

  static public <A> A evalInQ(Q q, final F0<A> f) {
    if (isInQ(q))
      return callF(f);
    final Var<Either<A, Throwable>> var = new Var();
    q.add(new Runnable() {

      public void run() {
        try {
          try {
            var.set(eitherA(callF(f)));
          } catch (Throwable e) {
            var.set(eitherB(e));
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "try {\r\n      var.set(eitherA(callF(f)));\r\n    } catch (Throwable e) {\r\n      ...";
      }
    });
    return returnOrThrow_either(waitForVarToBeNotNull(var));
  }

  static public boolean isInQ(Q q) {
    return q != null && isCurrentThread(q.rst.thread);
  }

  static public <A> A returnOrThrow_either(Either<A, Throwable> e) {
    if (isEitherB(e))
      throw rethrow(e.b());
    return eitherAOpt(e);
  }

  static public <A> A waitForVarToBeNotNull(Var<A> v) {
    try {
      synchronized (v) {
        while (!v.has()) v.wait();
        return v.get();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isCurrentThread(Thread t) {
    return t != null && t == currentThread();
  }

  static public <A, B> boolean isEitherB(Either<A, B> e) {
    return eitherIsB(e);
  }
}