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.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.text.SimpleDateFormat;
import java.nio.charset.Charset;
import java.text.NumberFormat;
import javax.swing.undo.UndoManager;
import java.awt.datatransfer.StringSelection;
import java.util.TimeZone;
import java.awt.geom.*;
import javax.imageio.metadata.*;
import javax.imageio.stream.*;
import javax.swing.border.*;

class main {

  static public class AvorDemonstrator extends DynAvorDemonstrator {

    public void start2() {
      super.start2();
      templateID = "#1031827";
      cssID = "#1031825";
      botName = heading = "AVOR Concierge";
      adminName = "AVOR Concierge";
    }

    public void makeFramer(Req req) {
      super.makeFramer(req);
      req.framer.addInHead(hStylesheetSnippet("#1031828"));
      req.framer.renderTitle = () -> h1(ahref(baseLink + "/", himgsrc("https://concierge.avor.ag/uploaded-image/1123", "style", "height: 1em; vertical-align: bottom", "title", "AVOR Logo")) + " " + req.framer.encodedTitle());
    }

    public String serveAuthForm(String redirect) {
      if (eq(currentReq.get().get("oldLoginPage"), "1"))
        return super.serveAuthForm(redirect);
      redirect = dropParamFromURL(redirect, "logout");
      if (empty(redirect))
        redirect = baseLink + "/";
      return replaceDollarVars(loadSnippet("#1031829"), "redirect", htmlEncode(redirect));
    }

    public Object html3(Req req) {
      if (eq(req.uri, "/concierge"))
        req.uri = "/demo";
      return super.html3(req);
    }

    public String botDemoHeadStuff() {
      return hStylesheetSnippet("#1031828");
    }
  }

  static public boolean _moduleClass_AvorDemonstrator = true;

  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 String hStylesheetSnippet(String snippetID) {
    return tag("link", "", "rel", "stylesheet", "type", "text/css", "href", rawSnippetURL(snippetID, "text/css"));
  }

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

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

  static public String himgsrc(String src, Object... params) {
    return tag("img", "", arrayPlus(params, "src", src));
  }

  static public boolean eq(Object a, Object b) {
    return a == b || a != null && b != null && a.equals(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 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 String replaceDollarVars(String s, Object... params) {
    if (empty(params))
      return s;
    Map<String, Object> vars = mapKeys(__28 -> dropDollarPrefix(__28), (Map<String, Object>) litcimap(params));
    return replaceDollarVars_dyn(s, var -> strOrNull(vars.get(var)));
  }

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

  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 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 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 rawSnippetURL(String snippetID) {
    return snippetRawURL(snippetID);
  }

  static public String rawSnippetURL(String snippetID, String contentType) {
    return snippetRawURL(snippetID, contentType);
  }

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

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

  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 Object[] arrayPlus(Object[] a1, Object... a2) {
    return concatArrays(a1, a2);
  }

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

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

  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 RuntimeException fail() {
    throw new RuntimeException("fail");
  }

  static public RuntimeException fail(Throwable e) {
    throw asRuntimeException(e);
  }

  static public RuntimeException fail(Object msg) {
    throw new RuntimeException(String.valueOf(msg));
  }

  static public RuntimeException fail(Object... objects) {
    throw new Fail(objects);
  }

  static public RuntimeException fail(String msg) {
    throw new RuntimeException(msg == null ? "" : msg);
  }

  static public RuntimeException fail(String msg, Throwable innerException) {
    throw new RuntimeException(msg, innerException);
  }

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

  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 Class __javax;

  static public Class getJavaX() {
    try {
      return __javax;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Object defaultDefaultClassFinder() {
    return new F1<String, Class>() {

      public Class get(String name) {
        Class c = get2(name);
        return c;
      }

      public Class get2(String name) {
        if (eq(name, "<main>"))
          return mc();
        {
          Class c = findClass_fullName(name);
          if (c != null)
            return c;
        }
        if (startsWithAny(name, "loadableUtils.utils$", "main$", mcDollar()))
          for (String pkg : ll("loadableUtils.utils$", mcDollar())) {
            String newName = pkg + afterDollar(name);
            {
              Class c = findClass_fullName(newName);
              if (c != null)
                return c;
            }
          }
        return null;
      }
    };
  }

  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 programIDWithCase() {
    return nempty(caseID()) ? programID() + "/" + quoteUnlessIdentifierOrInteger(caseID()) : programID();
  }

  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 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 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 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 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 String getQueryFromURL(String url) {
    return dropAfterSubstring(substring(url, smartIndexOf(url, "?") + 1), "#");
  }

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

  static public <A> List<A> takeFirst(int n, Iterable<A> i) {
    if (i == null)
      return null;
    return i == null ? null : takeFirst(n, i.iterator());
  }

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

  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 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 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, lCharSequence(l));
  }

  static public RuntimeException asRuntimeException(Throwable t) {
    if (t instanceof Error)
      _handleError((Error) t);
    return t instanceof RuntimeException ? (RuntimeException) t : new RuntimeException(t);
  }

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

  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 Map similarEmptyMap(Iterable m) {
    if (m instanceof TreeSet)
      return new TreeMap(((TreeSet) m).comparator());
    if (m instanceof LinkedHashSet)
      return new LinkedHashMap();
    return new HashMap();
  }

  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 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 String dropPrefix(String prefix, String s) {
    return s == null ? null : s.startsWith(prefix) ? s.substring(l(prefix)) : s;
  }

  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, String replacement) {
    return regexReplaceIC(s, pat, replacement);
  }

  static public String regexpReplaceIC(String s, String pat, IF1<Matcher, String> f) {
    return regexReplaceIC(s, pat, f);
  }

  static public String intToHex_flexLength(int i) {
    return Integer.toHexString(i);
  }

  static public Object get2(Object o, String field1, String field2) {
    return get(get(o, field1), field2);
  }

  static public Class mc() {
    return main.class;
  }

  static public boolean startsWithAny(String a, Collection<String> b) {
    for (String prefix : unnullForIteration(b)) if (startsWith(a, prefix))
      return true;
    return false;
  }

  static public boolean startsWithAny(String a, String... b) {
    if (b != null)
      for (String prefix : unnullForIteration(b)) if (startsWith(a, prefix))
        return true;
    return false;
  }

  static public boolean startsWithAny(String a, Collection<String> b, Matches m) {
    for (String prefix : unnullForIteration(b)) if (startsWith(a, prefix, m))
      return true;
    return false;
  }

  static public String mcDollar() {
    return mcName() + "$";
  }

  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 afterDollar(String s) {
    return substring(s, smartIndexOf(s, '$') + 1);
  }

  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 programID() {
    return getProgramID();
  }

  static public String programID(Object o) {
    return getProgramID(o);
  }

  static public String quoteUnlessIdentifierOrInteger(String s) {
    return quoteIfNotIdentifierOrInteger(s);
  }

  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[] 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 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 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 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 htmlQuote(String s) {
    return "\"" + htmlencode_forParams(s) + "\"";
  }

  static public List<String> splitAtAmpersand(String s) {
    return s == null ? emptyList() : asList(s.split("&"));
  }

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

  static public String dropAfterSubstring(String s, String b) {
    return substring(s, 0, smartIndexOf(s, b));
  }

  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 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 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 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 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 int strL(String s) {
    return s == null ? 0 : s.length();
  }

  static public int lCharSequence(CharSequence s) {
    return s == null ? 0 : s.length();
  }

  static public void _handleError(Error e) {
    call(javax(), "_handleError", e);
  }

  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 <A> TreeMap<String, A> caseInsensitiveMap() {
    return new TreeMap(caseInsensitiveComparator());
  }

  static public String regexReplaceIC(String s, String pat, Object f) {
    return regexReplace(regexpMatcherIC(pat, s), f);
  }

  static public String regexReplaceIC(String s, String pat, String replacement) {
    return regexpReplaceIC_direct(s, pat, replacement);
  }

  static public String unnullForIteration(String s) {
    return s == null ? "" : s;
  }

  static public <A> Collection<A> unnullForIteration(Collection<A> l) {
    return l == null ? immutableEmptyList() : l;
  }

  static public <A> List<A> unnullForIteration(List<A> l) {
    return l == null ? immutableEmptyList() : l;
  }

  static public int[] unnullForIteration(int[] l) {
    return l == null ? emptyIntArray() : l;
  }

  static public char[] unnullForIteration(char[] l) {
    return l == null ? emptyCharArray() : l;
  }

  static public double[] unnullForIteration(double[] l) {
    return l == null ? emptyDoubleArray() : l;
  }

  static public <A, B> Map<A, B> unnullForIteration(Map<A, B> l) {
    return l == null ? immutableEmptyMap() : l;
  }

  static public <A> Iterable<A> unnullForIteration(Iterable<A> i) {
    return i == null ? immutableEmptyList() : i;
  }

  static public <A> A[] unnullForIteration(A[] a) {
    return a == null ? (A[]) emptyObjectArray() : a;
  }

  static public BitSet unnullForIteration(BitSet b) {
    return b == null ? new BitSet() : b;
  }

  static public Pt unnullForIteration(Pt p) {
    return p == null ? new Pt() : p;
  }

  static public <A, B> Pair<A, B> unnullForIteration(Pair<A, B> p) {
    return p != null ? p : new Pair(null, null);
  }

  static public long unnullForIteration(Long l) {
    return l == null ? 0L : l;
  }

  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 String mcName() {
    return mc().getName();
  }

  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 String quoteIfNotIdentifierOrInteger(String s) {
    if (s == null)
      return null;
    return isJavaIdentifier(s) || isInteger(s) ? s : quote(s);
  }

  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 <A> A[] arrayOfSameType(A[] a, int n) {
    return newObjectArrayOfSameType(a, n);
  }

  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, List<A> l) {
    return subList(l, startIndex);
  }

  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 <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(Iterator<A> it) {
    ArrayList l = new ArrayList();
    if (it != null)
      while (it.hasNext()) l.add(it.next());
    return l;
  }

  static public <A> ArrayList<A> asList(IterableIterator<A> s) {
    return asList((Iterator) s);
  }

  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;
  }

  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[] 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 <A> Object[] mapToObjectArray(IF1<A, Object> f, A[] l) {
    int n = l(l);
    Object[] array = new Object[n];
    for (int i = 0; i < n; i++) array[i] = f.get(l[i]);
    return array;
  }

  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 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 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 int unnull(Integer i) {
    return i == null ? 0 : i;
  }

  static public long unnull(Long l) {
    return l == null ? 0L : l;
  }

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

  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) {
    _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 <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 List<String> classNames(Collection l) {
    return getClassNames(l);
  }

  static public List<String> classNames(Object[] l) {
    return getClassNames(Arrays.asList(l));
  }

  static public Comparator<String> caseInsensitiveComparator() {
    return betterCIComparator();
  }

  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(String s, String pat, String replacement) {
    return regexpReplace_direct(s, pat, replacement);
  }

  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 String regexpReplaceIC_direct(String s, String pat, String replacement) {
    Matcher m = regexpIC(pat, s);
    StringBuffer buf = new StringBuffer();
    while (m.find()) m.appendReplacement(buf, replacement);
    m.appendTail(buf);
    return str(buf);
  }

  static public <A> List<A> immutableEmptyList() {
    return Collections.emptyList();
  }

  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 <A, B> Map<A, B> immutableEmptyMap() {
    return Collections.emptyMap();
  }

  static public Object[] emptyObjectArray_a = new Object[0];

  static public Object[] emptyObjectArray() {
    return emptyObjectArray_a;
  }

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

  static public String formatSnippetIDOpt(String s) {
    return isSnippetID(s) ? formatSnippetID(s) : s;
  }

  static public String formatSnippetID(String id) {
    return "#" + parseSnippetID(id);
  }

  static public String formatSnippetID(long id) {
    return "#" + id;
  }

  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();
      if (cl == null)
        return null;
      String name = mainClassNameForClassLoader(cl);
      return loadClassFromClassLoader_orNull(cl, name);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  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 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 Object[] toObjectArray(Collection c) {
    List l = asList(c);
    return l.toArray(new Object[l.size()]);
  }

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

  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();
  }

  static public Map emptyMap() {
    return new HashMap();
  }

  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 Throwable getExceptionCause(Throwable e) {
    Throwable c = e.getCause();
    return c != null ? c : e;
  }

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

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

  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);
  }

  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 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 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 String regexpReplace_direct(String s, String pat, String replacement) {
    Matcher m = regexp(pat, s);
    return regexpReplace_direct(m, replacement);
  }

  static public String regexpReplace_direct(Matcher m, String replacement) {
    StringBuffer buf = new StringBuffer();
    while (m.find()) m.appendReplacement(buf, replacement);
    m.appendTail(buf);
    return str(buf);
  }

  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 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);
  }

  public static boolean isSnippetID(String s) {
    try {
      parseSnippetID(s);
      return true;
    } catch (RuntimeException e) {
      return false;
    }
  }

  static public String mainClassNameForClassLoader(ClassLoader cl) {
    return or((String) callOpt(cl, "mainClassName"), "main");
  }

  static public Class loadClassFromClassLoader_orNull(ClassLoader cl, String name) {
    try {
      return cl == null ? null : cl.loadClass(name);
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

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

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

  static public boolean eqOneOf(Object o, Object... l) {
    for (Object x : l) if (eq(o, x))
      return true;
    return false;
  }

  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 <A> A[] makeArray(Class<A> type, int n) {
    return (A[]) Array.newInstance(type, n);
  }

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

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

  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 Map synchroMap() {
    return synchroHashMap();
  }

  static public <A, B> Map<A, B> synchroMap(Map<A, B> map) {
    return Collections.synchronizedMap(map);
  }

  static public String multiLineQuoteWithSpaces(String s) {
    return multiLineQuote(" " + s + " ");
  }

  static public Map synchroHashMap() {
    return synchronizedMap(new HashMap());
  }

  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 Map synchronizedMap() {
    return synchroMap();
  }

  static public <A, B> Map<A, B> synchronizedMap(Map<A, B> map) {
    return synchroMap(map);
  }

  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 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 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);
  }

  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 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 abstract public class IterableIterator<A> implements Iterator<A>, Iterable<A> {

    public Iterator<A> iterator() {
      return this;
    }

    public void remove() {
      unsupportedOperation();
    }
  }

  static public class Fail extends RuntimeException implements IFieldsToList {

    public Object[] objects;

    public Fail() {
    }

    public Fail(Object... objects) {
      this.objects = objects;
    }

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

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

  abstract static public class DynAvorDemonstrator extends DynNewBot2 {

    public void start() {
      start2();
      super.start();
    }

    public void start2() {
      botName = heading = "AVOR Demonstrator";
      adminName = "AVOR Demonstrator Admin";
      showTalkToBotLink = true;
      alwaysRedirectToHttps = true;
    }

    public Object html2(IWebRequest req) {
      String uri = addSlash(req.uri());
      Matches m = new Matches();
      if (startsWith(uri, "/uiDemonstrator/", m))
        return serveUIDemonstrator(webRequest_modifyURI(addSlashPrefix(m.rest()), req));
      return super.html2(req);
    }

    public <A extends Concept> HCRUD_Concepts<A> crudData(Class<A> c, Req req) {
      HCRUD_Concepts<A> cc = super.crudData(c, req);
      cc.verbose = true;
      return cc;
    }

    public List<Class> crudClasses(Req req) {
      List<Class> l = super.crudClasses(req);
      return req.masterAuthed ? listPlus(l, Avatar.class) : l;
    }

    public void makeFramer(Req req) {
      super.makeFramer(req);
      req.framer.addNavItem(appendQueryToURL(baseLink + "/uiDemonstrator", "cookie", "test_" + aRandomID()), "UI Demonstrator", "targetBlank", true);
    }

    public Object serveUIDemonstrator(IWebRequest req) {
      String cookie = or2(req.params().get("cookie"), "test_" + aRandomID());
      return hhtml(hhead_title("UI Demonstrator [" + botName + "]") + hframeset_cols("*,*", hframe("botFrame", appendQueryToURL(baseLink + "/demo", "_autoOpenBot", 1, "cookie", cookie)) + hframeset_rows("*,*", hframe("botAdminFrame", baseLink + "/crud/Conversation") + hframe("botThoughtsFrame", appendQueryToURL(baseLink + "/thoughts", "cookie", cookie)))));
    }
  }

  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 getHeader(String name) {
      return mapGet(headers(), name);
    }

    default public String domain() {
      return getHeader("host");
    }

    public String cookie();

    public boolean isHttps();

    default public void noSpam() {
    }

    default public String get(String param) {
      return mapGet(params(), param);
    }

    default public String userAgent() {
      return getHeader("user-agent");
    }
  }

  static public interface IFieldsToList {

    public Object[] _fieldsToList();
  }

  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(__56 -> renderMsgForWorkerChat(__56), 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;

    transient public boolean botDisabled = false;

    transient public boolean useBotNameAsModuleName = true;

    transient public boolean showMailSenderInfo = true;

    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");

    transient public String nameOfReferencesColumn = "Referenced by";

    public void start() {
      super.start();
      if (useBotNameAsModuleName)
        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 __22 = enter();
            try {
              editMasterPassword();
            } finally {
              _close(__22);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "temp enter();  editMasterPassword();";
        }
      }), !showMailSenderInfo ? null : "Show/edit mail sender info...", runnableThread(new Runnable() {

        public void run() {
          try {
            AutoCloseable __23 = enter();
            try {
              editMailSenderInfo();
            } finally {
              _close(__23);
            }
          } 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 subURI;

      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 String uriWithParams() {
        return appendParamsToURL(uri, params);
      }

      public HTMLFramer1 framer() {
        return framer;
      }
    }

    public boolean calcMasterAuthed(Req req) {
      return req != null && req.auth != null && req.auth.master;
    }

    public Object html(IWebRequest request) {
      AutoCloseable __18 = enter();
      try {
        vmBus_logMethodCall("html", "this", this, "request", request);
        try {
          return html2(request);
        } catch (Throwable e) {
          printStackTrace(e);
          return subBot_serve500(showFullErrors || calcMasterAuthed(currentReq.get()) ? getStackTrace(e) : "Error.");
        } finally {
          currentReq.set(null);
        }
      } finally {
        _close(__18);
      }
    }

    public void requestServed() {
    }

    public Object html2(IWebRequest request) {
      htmlencode_forParams_useV2();
      {
        Lock __2 = statsLock;
        lock(__2);
        try {
          requestsServed++;
          change();
          requestServed();
          vmBus_logMethodCall("html", "this", this, "requestsServed", requestsServed);
        } finally {
          unlock(__2);
        }
      }
      Req req = webRequestToReq(request);
      if (alwaysRedirectToHttps) {
        Object __10 = redirectToHttps(req);
        if (__10 != null)
          return __10;
      }
      vmBus_logMethodCall("html", "Calling html3");
      return html3(req);
    }

    public Req webRequestToReq(IWebRequest request) {
      Req req = new Req();
      req.webRequest = request;
      req.uri = request.uri();
      req.params = request.params();
      return req;
    }

    public Object html3(Req req) {
      IWebRequest request = req.webRequest;
      String uri = req.uri;
      Map<String, String> params = req.params;
      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 = botDisabled ? null : 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 {
        currentReq.set(req);
        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;
        }
        fillReqAuthFromCookie(req, cookie, auth);
        boolean requestAuthed = req.auth != null;
        boolean masterAuthed = req.masterAuthed;
        Domain authDomainObj = req.authDomainObj;
        String authDomain = req.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 serveBotDemo(req, 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;
        }
        String uri2 = dropSlashPrefix(uri);
        if (!startsWith(uri, "/crud/") && nempty(uri2)) {
          UploadedFile fileToServe = conceptWhere(UploadedFile.class, "liveURI", urldecode(uri2));
          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")) {
          framer.add(htableRaw2(nonNulls(renderStats()), 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(__19);
      }
    }

    public Object serveDefaultPage(Req req) {
      return null;
    }

    public Object completeFrame() {
      return completeFrame(currentReq.get());
    }

    transient public IF1<Req, Object> completeFrame;

    public Object completeFrame(Req req) {
      return completeFrame != null ? completeFrame.get(req) : completeFrame_base(req);
    }

    final public Object completeFrame_fallback(IF1<Req, Object> _f, Req req) {
      return _f != null ? _f.get(req) : completeFrame_base(req);
    }

    public Object completeFrame_base(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");
      } else
        framer.addNavItem(logInLink(), "Log in");
      return framer.render();
    }

    public String logInLink() {
      return baseLink + "/";
    }

    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 String makeBaseTitle(Req req) {
      return ahref(baseLink + "/", adminName) + " " + squareBracket(loggedInUserDesc_html(req));
    }

    public void makeFramer(Req req) {
      HTMLFramer1 framer = new HTMLFramer1();
      req.framer = framer;
      framer.titleIsHTML = true;
      framer.title = makeBaseTitle(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));
      makeNavItems(req, framer);
      List<Class> cmdClasses = botCmdClasses(req);
      if (nempty(cmdClasses))
        framer.contents.add(p("Bot actions: " + joinWithVBar(map(cmdClasses, c -> makeClassNavItem(c, req)))));
    }

    public void makeNavItems(Req req, HTMLFramer1 framer) {
      if (showTalkToBotLink)
        framer.addNavItem(simulateDomainLink(req.authDomain), "Talk to bot", "targetBlank", true);
      for (Class c : navItemClasses(req)) framer.addNavItem(makeClassNavItem(c, req));
    }

    public List<Class> navItemClasses(Req req) {
      return crudClasses(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 searchQuery = trim(req.get("search"));
      data.customFilter = crudSearchFilter(req, data, searchQuery);
      HCRUD crud = new HCRUD(crudLink(c), data);
      crud.searchQuery = searchQuery;
      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", nameOfReferencesColumn), joinMap(takeFirst(refsToShow, refs), ref -> p(ahref(conceptLink(ref), htmlEncode_nlToBr_withIndents(str(ref))))) + (more <= 0 ? "" : "<br>" + ahref(addParamsToURL(crudLink(concept), "refsToShow", 10000), "+" + n2(more) + " more")));
      };
      return crud;
    }

    public Class isLinkableConcept(Concept c, Req req) {
      if (req == null || c == null)
        return null;
      Class theClass = _getClass(c);
      return firstThat(allLinkableClasses(req), base -> isSubclassOf(theClass, base));
    }

    public String crudLink(Concept c) {
      return conceptLink(c, currentReq.get());
    }

    public String conceptLink(Concept c) {
      return conceptLink(c, currentReq.get());
    }

    public String conceptLink(Concept c, Req req) {
      Class theClass = c.getClass();
      if (req != null) {
        theClass = isLinkableConcept(c, req);
        if (theClass == null)
          return null;
      }
      return c == null ? null : appendQueryToURL(crudLink(theClass), "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 ? "" : span(n2(count), "data-isCountOf", shortClassName(c)) + " ") + ahref(crudLink(c), count == 1 ? data.itemName() : data.itemNamePlural()) + (!crud.actuallyAllowCreate() ? "" : " " + targetBlankIf(newLinkTargetBlank(c), newLinkForCRUD(crud, c), "+", "title", "Create New " + data.itemName()));
    }

    transient public IF1<Class, Boolean> newLinkTargetBlank;

    public boolean newLinkTargetBlank(Class c) {
      return newLinkTargetBlank != null ? newLinkTargetBlank.get(c) : newLinkTargetBlank_base(c);
    }

    final public boolean newLinkTargetBlank_fallback(IF1<Class, Boolean> _f, Class c) {
      return _f != null ? _f.get(c) : newLinkTargetBlank_base(c);
    }

    public boolean newLinkTargetBlank_base(Class c) {
      return false;
    }

    public String newLinkForCRUD(HCRUD crud, Class c) {
      return crud.newLink();
    }

    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 crudBase() {
      return baseLink + "/crud";
    }

    public String crudLink(Class c) {
      return crudBase() + "/" + 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 (click for full-scale)", new HTML(targetBlank(url, 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(__57 -> htmlEncode2_gen(__57), 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() + (useWebSockets ? webSocketHeadStuff() : "")) + 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 : unnullForIteration(leads)) {
        List row = new ArrayList();
        for (Map.Entry<? extends String, ? extends Object> __20 : _entrySet(unnullForIteration(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 = __20.getKey();
          Object val = __20.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 : unnullForIteration(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 : unnullForIteration(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 : unnullForIteration(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() {
      Settings settings = conceptWhere(Settings.class);
      print("Got settings: " + settings);
      return settings;
    }

    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);
      assertNotNull("settings 1", uniq(Settings.class));
      indexSingletonConcept(Settings.class);
      assertNotNull("settings 2", uniq(Settings.class));
      makeIndices();
      indexAllLinkableClasses();
      assertNotNull("settings 3", uniq(Settings.class));
      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);
      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_html(Req req) {
      return htmlEncode2(loggedInUserDesc(req));
    }

    public String loggedInUserDesc(Req req) {
      return req.masterAuthed ? "super user" : 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 Collection<Class> cruddableClasses(Req req) {
      List<Class> classes = crudClasses(req);
      List<Class> cmdClasses = botCmdClasses(req);
      return flattenList2(classes, DeliveredDomain.class, cmdClasses);
    }

    public List<Class> botCmdClasses(Req req) {
      return req.masterAuthed ? botCmdClasses() : null;
    }

    public Object serveCRUD(Req req) {
      String uri = req.uri();
      if (!uri.startsWith(crudBase()))
        return null;
      for (Class c : (Set<Class>) asSet(cruddableClasses(req))) 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(title, baseTitle);
        return h2(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 searchQuery) {
      if (empty(searchQuery))
        return null;
      boolean debug = eq(req.get("searchDebug"), "1");
      HTMLFramer1 framer = req.framer;
      return objects -> {
        ScoredSearcher<A> searcher = new ScoredSearcher<>(searchQuery);
        if (debug) {
          if (framer != null)
            framer.add(hcomment(renderVars_struct("searcher", searcher)));
        }
        for (A a : unnullForIteration(objects)) {
          Map<String, Object> map = allConceptFieldsAsMap(a);
          List<String> fields = allToString(values(map));
          fields.add(str(a.id));
          if (debug) {
            if (framer != null)
              framer.add(hcomment(renderVars_str("a", a, "fields", fields)));
          }
          double score = searcher.scoreFields(fields) + searcher.scoreFields(keys(map)) * 0.2;
          searcher.put(a, score);
        }
        return searcher.get();
      };
    }

    public boolean requestAuthed() {
      return currentReq.get() != null && currentReq.get().requestAuthed();
    }

    public String webSocketHeadStuff() {
      return webSocketHeadStuff(currentReq.get());
    }

    transient public IF1<Req, String> webSocketHeadStuff;

    public String webSocketHeadStuff(Req req) {
      return webSocketHeadStuff != null ? webSocketHeadStuff.get(req) : webSocketHeadStuff_base(req);
    }

    final public String webSocketHeadStuff_fallback(IF1<Req, String> _f, Req req) {
      return _f != null ? _f.get(req) : webSocketHeadStuff_base(req);
    }

    public String webSocketHeadStuff_base(Req req) {
      return hreconnectingWebSockets() + hjs("\r\n      var webSocketQuery = window.location.search;\r\n      var ws;\r\n      var wsVerbose = false;\r\n      var wsReady = false;\r\n      \r\n      function wsOnOpen(onOpen) {\r\n        if (wsReady) onOpen();\r\n        else {\r\n          var old = ws.onopen;\r\n          ws.onopen = function() {\r\n            if (old) old();\r\n            onOpen();\r\n          };\r\n        };\r\n      }\r\n      \r\n      //$(document).ready(function() {\r\n        var url = ((window.location.protocol === \"https:\") ? \"wss://\" : \"ws://\") + window.location.host + " + jsQuote(baseLink + req.uri()) + " + webSocketQuery;\r\n        console.log(\"Opening WebSocket: \" + url);\r\n        ws = new ReconnectingWebSocket(url);\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    ");
    }

    public void fillReqAuthFromCookie(Req req, String cookie, AuthedDialogID auth) {
      req.auth = auth;
      boolean requestAuthed = auth != null;
      req.masterAuthed = calcMasterAuthed(req);
      req.authDomainObj = !requestAuthed ? null : auth.restrictedToDomain.get();
      req.authDomain = !requestAuthed ? null : auth.domain();
    }

    transient public IF0<List<List<String>>> renderStats;

    public List<List<String>> renderStats() {
      return renderStats != null ? renderStats.get() : renderStats_base();
    }

    final public List<List<String>> renderStats_fallback(IF0<List<List<String>>> _f) {
      return _f != null ? _f.get() : renderStats_base();
    }

    public List<List<String>> renderStats_base() {
      long us = db_mainConcepts().uncompressedSize;
      return ll(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))));
    }

    public Object serveBotDemo(Req req, String js) {
      return hhtml(hhead(htitle(heading) + loadJQuery2() + botDemoHeadStuff()) + hbody(hjavascript(js)));
    }

    public String botDemoHeadStuff() {
      return "";
    }
  }

  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 getFile() {
      return theFile();
    }

    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(__58 -> dropStuffBeforeVerticalBar(__58), 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;
    }
  }

  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();
    }
  }

  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) dm_current_mandatory();
  }

  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 class HTMLFramer1 {

    public String title;

    public boolean titleIsHTML = false;

    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(titleIsHTML ? hTitleClean(title) : 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(encodedTitle());
    }

    public String encodedTitle() {
      return titleIsHTML ? title : 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 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 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 Scorer<A> {

    public double score, total;

    public List<A> successes, errors;

    public boolean verboseFailures, verboseAll;

    public void add(double score) {
      addZeroToOne(score);
    }

    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();
    }

    public void collectSuccesses() {
      successes = new ArrayList();
    }
  }

  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 ConceptsRefChecker {

    public Concepts cc;

    public List<Err> errors = new ArrayList();

    public boolean veryVerbose = false;

    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();
      if (veryVerbose)
        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));
        }
        Collection<Concept.Ref> refs = c._refs();
        badElement = firstElementNotSubclassing(refs, Concept.Ref.class);
        if (badElement != null) {
          print("Bad element in backRefs of " + c + ": " + badElement);
          continue;
        }
        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 if (err instanceof ErrSuperfluousBackRef) {
            ((ErrSuperfluousBackRef) err).dest._removeBackRef(((ErrSuperfluousBackRef) err).ref);
            out.add("  backreference dropped");
          } else
            out.add("  TODO - fix not implemented");
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
      return lines(out);
    }

    public String runAndFixAll() {
      run();
      return fixAll();
    }
  }

  static public class Timestamp implements Comparable<Timestamp>, IFieldsToList {

    public long date;

    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 Timestamp() {
      date = now();
    }

    public String toString() {
      return formatLocalDateWithSeconds(date);
    }

    public int compareTo(Timestamp t) {
      return t == null ? 1 : cmp(date, t.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;

    transient public SingleComponentPanel scpStretcherControl;

    public JComponent visualizeWithoutEnabled() {
      return super.visualize();
    }

    public JComponent dm_visualizeWithEnabled(JComponent main) {
      return centerAndSouthWithMargins(main, makeControlArea());
    }

    public JPanel makeControlArea() {
      if (scpStretcherControl == null)
        scpStretcherControl = singleComponentPanel();
      buttons = jrightalignedline(makeEnabledCheckBox());
      return centerAndEastWithMargin(scpStretcherControl, buttons);
    }

    static public JCheckBox makeEnabledCheckBox() {
      return dm_fieldCheckBox("enabled");
    }

    public void setEnabled(boolean b) {
      setField("enabled", b);
    }

    public void addControls(Component... components) {
      addToControlArea(components);
    }

    public void addToControlArea(Component... components) {
      addComponentsFirst(buttons, components);
    }

    public void addControl(Component component) {
      addButton(component);
    }

    public void addButton(Component component) {
      addComponentsFirst(buttons, component);
    }

    public void setMainControl(JComponent control) {
      scpSet(scpStretcherControl, control);
    }
  }

  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 void putWithWeights(A object, Collection<Pair<String, Double>> fields) {
      scoredSearch_scoreWeighted2(fields, preparedTerms);
    }

    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 put(A object, double score) {
      add(object, score);
    }

    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 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 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 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 interface Visitable {

    public void visitUsing(IVF1 f);
  }

  static public interface Transformable {

    public Object transformUsing(IF1 f);
  }

  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 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 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 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 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 <A, B> LinkedHashMap<A, B> cloneLinkedHashMap(Map<A, B> map) {
    return map == null ? new LinkedHashMap() : new LinkedHashMap(map);
  }

  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 UnsupportedOperationException unsupportedOperation() {
    throw new UnsupportedOperationException();
  }

  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 String addSlash(String s) {
    return empty(s) || s.endsWith("/") ? s : s + "/";
  }

  static public ModifiedWebRequest webRequest_modifyURI(String newURI, IWebRequest req) {
    ModifiedWebRequest r = new ModifiedWebRequest(req);
    r.uri = newURI;
    return r;
  }

  static public ModifiedWebRequest webRequest_modifyURI(IWebRequest req, String newURI) {
    return webRequest_modifyURI(newURI, req);
  }

  static public String addSlashPrefix(String s) {
    return addPrefix("/", s);
  }

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

  static public String aRandomID() {
    return aGlobalID();
  }

  static public String aRandomID(Random random) {
    return aGlobalID(random);
  }

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

  static public String hhead_title(String title) {
    return hhead(htitle(title));
  }

  static public String hframeset_cols(String cols, Object contents, Object... params) {
    return tag("frameset", contents, paramsPlus(params, "cols", cols));
  }

  static public String hframe(String name, String src, Object... __) {
    return tag("frame", "", paramsPlus(__, "name", name, "src", src));
  }

  static public String hframeset_rows(String rows, Object contents, Object... params) {
    return tag("frameset", contents, paramsPlus(params, "rows", rows));
  }

  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 <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 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 lock(Lock lock) {
    try {
      ping();
      if (lock == null)
        return;
      try {
        vmBus_send("locking", lock, "thread", currentThread());
        lock.lockInterruptibly();
        vmBus_send("locked", lock, "thread", currentThread());
      } 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 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 (" + dm_moduleLibID() + ") multiple times. This instance will exit.");
  }

  static public String standardTimeZone_name = "Europe/Berlin";

  static public String standardTimeZone() {
    return standardTimeZone_name;
  }

  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(combinePrintParameters(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 String dbProgramID() {
    return getDBProgramID();
  }

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

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

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

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

  static public void ensureConceptClassesAreIndexed(Collection<Class> classes) {
    for (Class c : unnullForIteration(classes)) ensureConceptClassIsIndexed(c);
  }

  static public JButton jPopDownButton_noText(final Object... menuParams) {
    return toolTip("Additional commands", jPopDownButton("", menuParams));
  }

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

  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 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 void vmBus_logMethodCall(String methodName, Object... argsOrVars) {
    vmBus_send("method_" + methodName, objectArrayPlus_inFront(argsOrVars, "thread", currentThread()));
  }

  static public String html(Object contents) {
    return fixHTML(contents);
  }

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

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

  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 public void htmlencode_forParams_useV2() {
    htmlencode_forParams_useV2.set(true);
  }

  static public void change() {
    callOpt(getOptMC("mainConcepts"), "allChanged");
  }

  static public void unlock(Lock lock, String msg) {
    if (lock == null)
      return;
    lock.unlock();
    vmBus_send("unlocked", lock, "thread", currentThread());
    print("Unlocked: " + msg);
  }

  static public void unlock(Lock lock) {
    if (lock == null)
      return;
    lock.unlock();
    vmBus_send("unlocked", lock, "thread", currentThread());
  }

  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 <A, B> Map<A, B> mapPlus(Map<A, B> m, Object... data) {
    m = cloneMap(m);
    litmap_impl(m, data);
    return m;
  }

  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 String aGlobalID() {
    return randomID(globalIDLength());
  }

  static public String aGlobalID(Random random) {
    return randomID(random, globalIDLength());
  }

  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 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 Object serve404() {
    return subBot_serve404();
  }

  static public Object serve404(String msg) {
    return subBot_serve404(msg);
  }

  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 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 String binaryMimeType() {
    return "application/octet-stream";
  }

  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 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 File loadLibrary(String snippetID) {
    return loadBinarySnippet(snippetID);
  }

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

  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 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 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 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(long[] a, String singular) {
    return n2(l(a), 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 long now_virtualTime;

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

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

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

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

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

  static public Boolean trueOrNull(Boolean b) {
    return eq(b, false) ? null : b;
  }

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

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

  static public String hexColorToCSSRGB(String hex) {
    return empty(hex) ? null : "rgb(" + joinWithComma(rgbToIntList(new RGB(hex))) + ")";
  }

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

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

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

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

  static public String stringIf(boolean b, String s) {
    return stringIfTrue(b, s);
  }

  static public String stringIf(String s, boolean b) {
    return stringIf(b, s);
  }

  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 String dropSlashPrefix(String s) {
    return dropLeadingSlash(s);
  }

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

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

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

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

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

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

  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> nonNulls(Iterable<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 List<String> listZIP(File inZip) {
    return listZip(inZip);
  }

  static public String appendSlash(String s) {
    return addSlash(s);
  }

  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 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);
    }
  }

  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 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 hresponstable() {
    return hcss_responstable();
  }

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

  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 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 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 joinWithVBar(Iterable<String> l) {
    return join(" | ", l);
  }

  static public String joinWithVBar(String... l) {
    return joinWithVBar(asList(l));
  }

  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 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 String htmlEncode_nlToBr_withIndents(String s) {
    return nlToBr_withIndents(htmlEncode(s));
  }

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

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

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

  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 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 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 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"));
    if (tbl1 == null)
      return table2;
    if (tbl2 == null)
      return table1;
    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 tr(Object contents) {
    return tag("tr", contents);
  }

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

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

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

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

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

  static public String hPopDownButton(String... entries) {
    String id = "dropdown-" + aGlobalID(), outerID = "outer-" + id;
    String onclick = replaceDollarVars("\r\n    var x = document.getElementById($id);\r\n    x.style.display = window.getComputedStyle(x).display === \"none\" ? \"block\" : \"none\";\r\n    console.log(\"popup \" + id + \" display: \" + x.style.display);\r\n  ", "$id", jsQuote(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    #$id li a {\r\n      text-decoration: none;\r\n      color: #000;\r\n    }\r\n\r\n    #$id li {    \r\n      display: block;\r\n      border-bottom: 1px solid #555;\r\n      padding: 8px 16px;\r\n      color: #000;\r\n    }\r\n  " + "\r\n    #$id li:hover, #$id li:hover > a {\r\n      background-color: #3399ff;\r\n      color: white;\r\n    }\r\n  ", "$id", id)) + hdiv(span(htmlEncode2(unicode_smallDownPointingTriangle()), "onclick", onclick) + hdiv(ul(entries), "id", id), "style", "position: relative; display: inline-block; cursor: context-menu", "id", outerID) + hscript(replaceDollarVars("\r\n      if (typeof $ !== 'undefined')\r\n        $('body').click(function(e) {\r\n          //console.log(\"target=\" + e.target + \", outerID=$outerID\");\r\n          if (!$(e.target).closest('#$outerID').length) {\r\n            //console.log(\"hiding $id\");\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 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 <A extends Concept> List<A> sortedByConceptID(Collection<A> c) {
    return sortedByCalculatedField(__59 -> conceptID(__59), c);
  }

  static public String span_title(String title, Object contents) {
    return spanTitle(title, contents);
  }

  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 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 classLoaderForObject(realm).loadClass(classNameToVM(name));
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

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

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

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

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

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

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

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

  static public String lines_rtrim(Collection lines) {
    return rtrim_fromLines(lines);
  }

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

  static public String ol_htmlEncode(List list, Object... params) {
    return ol_htmlEncode((Collection) list, params);
  }

  static public String ol_htmlEncode(Collection list, Object... params) {
    return ol(lmap(__60 -> htmlEncode2(__60), list), params);
  }

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

  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 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 <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 <A> List<A> itemPlus(A a, Collection<A> l) {
    return itemPlusList(a, l);
  }

  static public <A> String pnlToStringWithEmptyLines_rtrim(Iterable<A> l) {
    return rtrim(pnlToStringWithEmptyLines(l));
  }

  static public boolean isURL(String s) {
    return startsWithOneOf(s, "http://", "https://", "file:");
  }

  static public String himg(String src, Object... params) {
    return tag("img", "", arrayPlus(params, "src", isSnippetID(src) ? snippetImageLink(src) : src));
  }

  static public String himg(BufferedImage img, Object... params) {
    return himg(dataURL(jpegMimeType(), toJPEG(img)), params);
  }

  static public String hcrud_imagePreviewStyle() {
    return "max-width: 200px; max-height: 100px; width: auto; height: auto";
  }

  static public String himgsnippet(String imageID, Object... params) {
    return hsnippetimg(imageID, params);
  }

  static public String toK_str(long l) {
    return str_toK(l);
  }

  static public long fileSize(String path) {
    return getFileSize(path);
  }

  static public long fileSize(File f) {
    return getFileSize(f);
  }

  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 <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 String beforeColonOrAll(String s) {
    return takeFirst(smartIndexOf(s, ':'), s);
  }

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

  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 String htmlEncode2_gen(Object o) {
    return htmlEncode2(strOrEmpty(o));
  }

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

  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 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 String loadTextFileOrCreateWithRandomID(File f) {
    String id = trim(loadTextFile(f));
    if (empty(id))
      saveTextFile(f, id = aGlobalID());
    return id;
  }

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

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

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

  static public String hfullcenter(Object contents, Object... __) {
    return tag("table", tr(td(contents, "align", "center")), paramsPlus(__, "width", "100%", "height", "100%"));
  }

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

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

  static public String hpassword(String name, Object... params) {
    return hpasswordfield(name, params);
  }

  static public String hpassword(String name) {
    return hpasswordfield(name);
  }

  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 hbuttonLink(String url, String text, Object... params) {
    return hbuttonOnClick(text, "location.href=" + jsQuote(url) + ";", params);
  }

  static public String h3_htmlEncode(Object contents, Object... params) {
    return h3(htmlEncode2(str(contents)), params);
  }

  static public ContentsIndexedList<String> ciContentsIndexedList() {
    return new ContentsIndexedList<String>(ciMap());
  }

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

  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 long conceptID(Concept c) {
    return c == null ? 0 : c.id;
  }

  static public long conceptID(Concept.Ref ref) {
    return conceptID(cDeref(ref));
  }

  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 <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 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 : unnullForIteration(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<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 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 Object rcall(String method, Object o, Object... args) {
    return call_withVarargs(o, method, args);
  }

  static public String dropPrefix_trim(String prefix, String s) {
    return dropPrefixTrim(prefix, s);
  }

  static public Object serveJSON(Object... data) {
    return serveJSON_shallowLineBreaks(jsonPrepareData(data));
  }

  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> 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> 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 volatile public PersistableThrowable _handleException_lastException;

  static public List _handleException_onException = synchroList(ll((IVF1<Throwable>) (__1 -> printStackTrace2(__1))));

  static public boolean _handleException_showThreadCancellations = false;

  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) {
      if (_handleException_showThreadCancellations)
        System.out.println(getStackTrace_noRecord(e2));
      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 <A extends Concept> A registerConcept(A c) {
    return registerConcept(db_mainConcepts(), c);
  }

  static public <A extends Concept> A registerConcept(Concepts cc, A c) {
    {
      if (cc != null)
        cc.register(c);
    }
    return c;
  }

  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> 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 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 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 <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 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 nlToBr(String s) {
    return s.replace("\n", "<br>\n");
  }

  static public String html_emojisToUnicode(String s) {
    return join(mapNonCodeTokens(__61 -> emojisToUnicode(__61), htmlTok(s)));
  }

  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 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 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 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 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 <A> String lines(Iterable<A> l, IF1<A, String> f) {
    return mapToLines(l, f);
  }

  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 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 joinWithBR(Iterable<String> l) {
    return join("<br>\n", l);
  }

  static public String joinWithBR(String... l) {
    return joinWithBR(asList(l));
  }

  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 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 boolean eqicOneOf(String s, String... l) {
    for (String x : l) if (eqic(s, x))
      return true;
    return 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 jsBackLink() {
    return "javascript:history.go(-1)";
  }

  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 <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 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(__62 -> deSquareBracket(__62), (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 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 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 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 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 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 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> IterableIterator<Pair<Integer, A>> iterateWithIndex1(A[] l) {
    return iterateListWithIndex(asVirtualList(l), 1);
  }

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

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

  static public String ulIfNempty(Collection list, Object... params) {
    return empty(list) ? "" : ul(list, params);
  }

  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 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 <A, B> String formatColonProperties(Map<A, B> map) {
    return mapToLines(__63 -> joinPairWithColon(__63), mapToPairs(map));
  }

  static public <A, B> String formatColonProperties(List<Pair<A, B>> l) {
    return mapToLines(__64 -> joinPairWithColon(__64), 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 File programFile(String name) {
    return prepareProgramFile(name);
  }

  static public File programFile(String progID, String name) {
    return prepareProgramFile(progID, name);
  }

  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 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 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 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 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 hcommentSafe(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 : unnullForIteration(conceptFields(c))) map.put(field, cget(c, field));
    return map;
  }

  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 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 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        if (wsVerbose) console.log(\"Evaluating: \" + data.eval);\r\n        var geval = eval; // use global scope\r\n        geval(data.eval);\r\n        if (wsVerbose) console.log(\"Evaluated.\");\r\n      }\r\n    }\r\n  ";
  }

  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 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(Timestamp ts) {
    return renderHowLongAgo(timestampToLong(ts));
  }

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

  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 <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 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 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 spacePlusRoundBracketedIfNempty(String s) {
    return nempty(s) ? " " + roundBracket(s) : "";
  }

  static public String newLinesToSpaces2(String s) {
    return newLinesToSpaces_trim(s);
  }

  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 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 boolean deleteFile(File file) {
    return file != null && file.delete();
  }

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

  static public String formatDouble(double d, int digits) {
    String format = digits <= 0 ? "0" : "0." + rep(digits, '#');
    return decimalFormatEnglish(format, d);
  }

  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 String sfu(Object o) {
    return structureForUser(o);
  }

  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 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 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);
    }
    csetAll(c, values);
    concepts.register(c);
    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);
    }
    csetAll(c, values);
    concepts.register(c);
    return c;
  }

  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 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(__65 -> mmo2_parsePattern(__65), l));
    l = tok_splitAtPlus(tok);
    if (l(l) > 1)
      return new MMOPattern.And(lambdaMap(__66 -> mmo2_parsePattern(__66), 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 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 void vmBus_send(String msg, Object... args) {
    Object arg = vmBus_wrapArgs(args);
    pcallFAll_minimalExceptionHandling(vm_busListeners_live(), msg, arg);
    pcallFAll_minimalExceptionHandling(vm_busListenersByMessage_live().get(msg), msg, arg);
  }

  static public void vmBus_send(String msg) {
    vmBus_send(msg, (Object) null);
  }

  static public int syncL(Collection l) {
    if (l == null)
      return 0;
    synchronized (collectionMutex(l)) {
      return l.size();
    }
  }

  static public int syncL(Map map) {
    if (map == null)
      return 0;
    synchronized (collectionMutex(map)) {
      return map.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 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> boolean syncNempty(Collection<A> l) {
    return !syncEmpty(l);
  }

  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 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> 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(__67 -> shallowClone(__67), 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 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 List callFAll(Collection l, Object... args) {
    return callF_all(l, args);
  }

  static public String hTitleClean(String title) {
    return htmldecode(dropTagsAndHTMLComments(title));
  }

  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 String ahref_possiblyTargetBlank(boolean targetBlank, String link, Object contents, Object... params) {
    return ahref_possiblyTargetBlank(link, contents, targetBlank, 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 String strOrEmpty(Object o) {
    return o == null ? "" : str(o);
  }

  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 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 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 Thread currentThread() {
    return Thread.currentThread();
  }

  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> A pcallF(IF0<A> f) {
    try {
      return f == null ? null : f.get();
    } catch (Throwable __e) {
      return null;
    }
  }

  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 void cancelAndInterruptThread(Thread t) {
    if (t == null)
      return;
    cancelThread(t);
    t.interrupt();
  }

  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 long clamp(long x, long a, long 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 float score(Scored s) {
    return s == null ? 0 : s.score();
  }

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

  static public String nConcepts(long n) {
    return n2(n, "concept");
  }

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

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

  static public Object firstElementNotSubclassing(Iterable l, Class c) {
    return firstThat(l, o -> !isInstanceOf(o, c));
  }

  static public <A> boolean allUnique(Collection<A> l) {
    return l(uniquify(l)) == l(l);
  }

  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> cloneAndClear(Collection<A> l) {
    return cloneAndClearList(l);
  }

  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 <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 List<String> scoredSearch_prepare(String query) {
    return map(__68 -> replacePlusWithSpace(__68), 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 double scoredSearch_scoreWeighted2(Collection<Pair<String, Double>> l, List<String> words) {
    double score = 0;
    if (l != null)
      for (Pair<String, Double> __0 : l) {
        String s = pairA(__0);
        double weight = pairB(__0);
        score += scoredSearch_score(s, words) * weight;
      }
    return score;
  }

  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> 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 int hashCodeFor(Object a) {
    return a == null ? 0 : a.hashCode();
  }

  static public Boolean not(Boolean b) {
    return b == null ? null : !b;
  }

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

  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 char charAt(String s, int i) {
    return s != null && i >= 0 && i < s.length() ? s.charAt(i) : '\0';
  }

  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 String addPrefix(String prefix, String s) {
    return s.startsWith(prefix) ? s : prefix + s;
  }

  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 F0<AutoCloseable> dm_rEnter() {
    return dm_rEnter(dm_current());
  }

  static public F0<AutoCloseable> dm_rEnter(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 Runnable dm_rEnter(Runnable r) {
    return dm_rEnter(dm_current(), r);
  }

  static public Runnable dm_rEnter(DynModule mod, Runnable r) {
    return mod == null || r == null ? r : new Runnable() {

      public void run() {
        try {
          AutoCloseable __1 = mod.enter();
          try {
            r.run();
          } finally {
            _close(__1);
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "temp mod.enter(); r.run();";
      }
    };
  }

  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 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();
      vmBus_send("locking", lock, "thread", currentThread());
      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);
      }
      vmBus_send("locked", lock, "thread", currentThread());
      ping();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public ReentrantLock fairLock() {
    return new ReentrantLock(true);
  }

  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_debug = false;

  static public boolean dm_isFirstSiblingModule(Object mod) {
    String libID = dm_moduleLibID(mod);
    if (libID == null)
      return false;
    List<String> siblings = dm_modulesWithLibID(libID);
    if (dm_isFirstSiblingModule_debug)
      printVars("libID", libID, "siblings", siblings);
    if (empty(siblings))
      return true;
    return eq(dm_moduleID(mod), lowestByAlphaNum(siblings));
  }

  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 String combinePrintParameters(String s, Object o) {
    return (endsWithLetterOrDigit(s) ? s + ": " : s) + o;
  }

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

  static public Object[] objectArrayPlus_inFront(Object[] a1, Object... a2) {
    return concatArrays(a2, a1);
  }

  static public String fixHTML(Object contents) {
    String s = str(contents);
    return hhtml(hbody(s));
  }

  static public Object mainBot;

  static public Object getMainBot() {
    return mainBot;
  }

  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 Object getOptMC(String field) {
    return getOpt(mc(), field);
  }

  static public int iceil(double d) {
    return (int) Math.ceil(d);
  }

  static public int globalIDLength() {
    return 16;
  }

  static public ThreadLocal<Object> print_byThread() {
    synchronized (print_byThread_lock) {
      if (print_byThread == null)
        print_byThread = new ThreadLocal();
    }
    return print_byThread;
  }

  static public void print_setPrefixForThread(final String prefix) {
    interceptPrintInThisThread(empty(prefix) ? null : new _PrintIndent(prefix));
  }

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

  static public Object subBot_serve404() {
    return call(getMainBot(), "serve404");
  }

  static public Object subBot_serve404(String msg) {
    return call(getMainBot(), "serve404", msg);
  }

  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 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 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 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 <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 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 || diff <= 1000 && ((i / step) % 100) == 99 || ((i / step) % 1000) == 999;
  }

  static public byte[] toUtf8(String s) {
    try {
      return s.getBytes(utf8charset());
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String spaces(int n) {
    return rep(' ', n);
  }

  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 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 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 boolean emptyString(String s) {
    return s == null || s.length() == 0;
  }

  static public int boolToInt(boolean b) {
    return b ? 1 : 0;
  }

  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 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 Object jsonPrepareData(Object... data) {
    if (l(data) == 1)
      return data[0];
    return litorderedmap(data);
  }

  static public List<Integer> rgbToIntList(RGB rgb) {
    return rgb == null ? null : ll(rgb.redInt(), rgb.greenInt(), rgb.blueInt());
  }

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

  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 String stringIfTrue(boolean b, String s) {
    return b ? s : "";
  }

  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(unnull(text)), contentType);
  }

  static public String dropLeadingSlash(String s) {
    return dropPrefix("/", s);
  }

  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 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 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 <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 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 Object serveWithContentType(String text, String contentType) {
    return serveByteArray(toUtf8(text), contentType);
  }

  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> TreeMap<String, A> ciMap() {
    return caseInsensitiveMap();
  }

  static public List<Map> rawEmojisList() {
    return (List) jsonDecodeMap(loadTextFile(loadLibrary("#1400427"))).get("emojis");
  }

  static public void typeWriterConsole() {
    if (isHeadless())
      return;
    Font f = typeWriterFont();
    consoleFont(f);
    consoleInputFont(f);
  }

  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 <A> List<A> withoutNulls(Iterable<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 List<String> listZip(File inZip) {
    return listZipFile(inZip);
  }

  static public List<String> listZip(String inZip) {
    return listZipFile(inZip);
  }

  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);
      } else {
      }
      return x;
    } finally {
      _close(__1);
    }
  }

  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 isFile(File f) {
    return f != null && f.isFile();
  }

  static public boolean isFile(String path) {
    return isFile(newFile(path));
  }

  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 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 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 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 String joinNempties(String sep, Object... strings) {
    return joinStrings(sep, strings);
  }

  static public String joinNempties(String sep, Iterable strings) {
    return joinStrings(sep, strings);
  }

  static public <A> HashSet<A> lithashset(A... items) {
    HashSet<A> set = new HashSet();
    for (A a : items) set.add(a);
    return set;
  }

  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 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 List<String> htmlTok(String s) {
    return htmlcoarsetok(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 <A> List<A> dropFirstTwoAndLastTwo(List<A> l) {
    return dropFirstAndLast(2, l);
  }

  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 void replaceTokens(List<String> tok, IntRange r, String s) {
    replaceTokens(tok, r.start, r.end, s);
  }

  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 hrefBlank(String link, Object contents, Object... params) {
    return tag("a", contents, concatArrays(new Object[] { "href", link, "target", "_blank" }, params));
  }

  static public <A> void addFirst(List<A> c, A a) {
    if (c != null)
      c.add(0, a);
  }

  static public Object[] assertEvenLength(Object[] a) {
    assertTrue(even(l(a)));
    return a;
  }

  static public LinkedHashMap paramsToOrderedMap(Object... params) {
    return asLinkedHashMap(paramsToMap(params));
  }

  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 boolean isSubclass(Class a, Class b) {
    return a != null && b != null && b.isAssignableFrom(a);
  }

  static public String hstyle(Object contents) {
    return hcss(contents);
  }

  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, 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 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 spanTitle(String title, Object contents) {
    return empty(title) ? str(contents) : span(contents, "title", title);
  }

  static public ClassLoader classLoaderForObject(Object o) {
    if (o instanceof ClassLoader)
      return ((ClassLoader) o);
    if (o == null)
      return null;
    return _getClass(o).getClassLoader();
  }

  static public String classNameToVM(String name) {
    return name.replace(".", "$");
  }

  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 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 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 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 htmlEncode_nlToBr(String s) {
    return nlToBr(htmlEncode2(s));
  }

  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 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 String snippetImageLink(String snippetID) {
    return snippetImageURL(snippetID);
  }

  static public String dataURL(String mimeType, byte[] data) {
    return "data:" + mimeType + ";base64," + base64(data);
  }

  static public String jpegMimeType() {
    return "image/jpeg";
  }

  static public byte[] toJPEG(BufferedImage img) {
    try {
      ByteArrayOutputStream stream = new ByteArrayOutputStream();
      ImageIO.write(dropAlphaChannelFromBufferedImage(img), "jpeg", stream);
      return stream.toByteArray();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public byte[] toJPEG(File f) {
    return toJPEG(loadImage2(f));
  }

  static public String hsnippetimg(String imageID, Object... params) {
    return himg(snippetImageLink(imageID), params);
  }

  static public String str_toK(long l) {
    return n2(toK(l)) + " K";
  }

  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 AutoCloseable tempDBLock(Concepts concepts) {
    return tempLock(concepts.lock);
  }

  static public AutoCloseable tempDBLock() {
    return tempDBLock(db_mainConcepts());
  }

  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> 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);
    Lowest<IF0<Collection<A>>> bestIndex = new Lowest();
    if (concepts.ciFieldIndices != null)
      for (int i = 0; i < l(params); i += 2) {
        ping();
        Object val = params[i + 1];
        IFieldIndex<A, Object> index = concepts.getCIFieldIndex(c, (String) params[i]);
        if (index != null) {
          Collection<A> l = index.getAll(val);
          bestIndex.put(() -> l, l(l));
        }
        if (concepts.useBackRefsForSearches && val instanceof Concept) {
          bestIndex.put(() -> findBackRefs(((Concept) val), c), ((Concept) val)._backRefCount());
        }
      }
    if (bestIndex.has()) {
      Collection<A> l = bestIndex.get().get();
      if (l(params) == 2)
        return first(l);
      for (A x : l) {
        ping();
        if (checkConceptFieldsIC(x, params))
          return x;
      }
      return null;
    } else {
      for (A x : concepts.list(c)) {
        ping();
        if (checkConceptFieldsIC(x, params))
          return x;
      }
      return null;
    }
  }

  static public Concept findConceptWhereCI(Concepts concepts, String c, Object... params) {
    for (Concept x : concepts.list(c)) {
      ping();
      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 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 : unnullForIteration(l)) n += cset(c, values);
    return n;
  }

  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 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 <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> 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 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> 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 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 File getSecretProgramDir() {
    return getSecretProgramDir(actualProgramID());
  }

  static public File getSecretProgramDir(String snippetID) {
    if (empty(snippetID))
      return javaxSecretDir();
    return newFile(javaxSecretDir(), formatSnippetID(snippetID));
  }

  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 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 String hbuttonOnClick(String text, String onClick, Object... params) {
    return hfulltag("button", text, paramsPlus(params, "onClick", onClick));
  }

  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 <A extends Concept> A cDeref(Concept.Ref<A> ref) {
    return ref == null ? null : ref.get();
  }

  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 <A> List<A> sorted(Collection<A> c, 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 <A> List<A> sorted(Comparator<A> comparator, Collection<A> c) {
    List<A> l = cloneList(c);
    sort(l, comparator);
    return l;
  }

  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 dropPrefixTrim(String prefix, String s) {
    return trim(dropPrefix(prefix, s));
  }

  static public Object serveJSON_shallowLineBreaks(Object data) {
    return serveText(jsonEncode_shallowLineBreaks(data));
  }

  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 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 <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);
  }

  static public <A> List<A> synchroList() {
    return synchroList(new ArrayList<A>());
  }

  static public <A> List<A> synchroList(List<A> l) {
    return Collections.synchronizedList(l);
  }

  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 PersistableThrowable persistableThrowable(Throwable e) {
    return e == null ? null : new PersistableThrowable(e);
  }

  static public Throwable innerException(Throwable e) {
    return getInnerException(e);
  }

  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> 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);
  }

  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 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 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 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 String addSuffix(String s, String suffix) {
    return s == null || s.endsWith(suffix) ? s : s + suffix;
  }

  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 BigInteger bigint(String s) {
    return new BigInteger(s);
  }

  static public BigInteger bigint(long l) {
    return BigInteger.valueOf(l);
  }

  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 _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 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 boolean sameSnippetID(String a, String b) {
    if (!isSnippetID(a) || !isSnippetID(b))
      return false;
    return parseSnippetID(a) == parseSnippetID(b);
  }

  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 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 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 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 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 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 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 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 <A> List<A> asVirtualList(A[] a) {
    return wrapArrayAsList(a);
  }

  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 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 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 <A, B> List<Pair<A, B>> mapToPairs(Map<A, B> map) {
    List<Pair<A, B>> l = emptyList(l(map));
    if (map != null)
      for (Map.Entry<A, B> e : map.entrySet()) l.add(pair(e.getKey(), e.getValue()));
    return l;
  }

  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 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 postPage(String url, Object... params) {
    return doPost(litmap(params), url);
  }

  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 File prepareProgramFile(String name) {
    return mkdirsForFile(getProgramFile(name));
  }

  static public File prepareProgramFile(String progID, String name) {
    return mkdirsForFile(getProgramFile(progID, name));
  }

  static public <A> A nextToLast(List<A> l) {
    return get(l, l(l) - 2);
  }

  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 String dropTrailingSlash(String s) {
    return dropSuffix("/", s);
  }

  static public String hcommentSafe(String text) {
    return hcomment_unescaped(contains(text, "-->") ? htmlencode(text) : text);
  }

  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 <A> A cget(Object c, String field) {
    c = derefRef(c);
    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 hjavascript_src_snippet(String snippetID) {
    return hfulltag("script", "", "src", snippetRawURL(snippetID, "text/javascript"));
  }

  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 conceptsFileName() {
    return "concepts.structure.gz";
  }

  static public long timestampToLong(Timestamp ts) {
    return ts == null ? 0 : ts.date;
  }

  static public int howManySecondsAgo(long timestamp) {
    return iround(toSeconds(now() - timestamp));
  }

  static public int iround(double d) {
    return (int) Math.round(d);
  }

  static public int iround(Number n) {
    return iround(toDouble(n));
  }

  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 roundBracket(String s) {
    return "(" + s + ")";
  }

  static public String roundBracket(Object s) {
    return roundBracket(str(s));
  }

  static public String newLinesToSpaces_trim(String s) {
    return s == null ? null : trim(s).replaceAll("\\s*\r?\n\\s*", " ");
  }

  static public String decimalFormatEnglish(String format, double d) {
    return decimalFormatEnglish(format).format(d);
  }

  static public java.text.DecimalFormat decimalFormatEnglish(String format) {
    return new java.text.DecimalFormat(format, new java.text.DecimalFormatSymbols(Locale.ENGLISH));
  }

  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 <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 boolean regexpMatches(String pat, String s) {
    return pat != null && s != null && regexp(pat, s).matches();
  }

  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 String structureForUser(Object o) {
    return beautifyStructure(struct_noStringSharing(o));
  }

  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 boolean endsWithLetterOrDigit(String s) {
    return s != null && s.length() > 0 && Character.isLetterOrDigit(s.charAt(s.length() - 1));
  }

  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 <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 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 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 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 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> 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 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 isQuoted(String s) {
    if (isNormalQuoted(s))
      return true;
    return isMultilineQuoted(s);
  }

  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 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 Object vmBus_wrapArgs(Object... args) {
    return empty(args) ? null : l(args) == 1 ? args[0] : args;
  }

  static public void pcallFAll_minimalExceptionHandling(Collection l, Object... args) {
    if (l != null)
      for (Object f : cloneList(l)) {
        ping();
        pcallF_minimalExceptionHandling(f, args);
      }
  }

  static public void pcallFAll_minimalExceptionHandling(Iterator it, Object... args) {
    while (it.hasNext()) {
      ping();
      pcallF_minimalExceptionHandling(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> 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 void addToContainer(Container a, Component... b) {
    if (a == null)
      return;
    {
      swing(new Runnable() {

        public void run() {
          try {
            for (Component c : unnullForIteration(b)) if (c != null)
              a.add(c);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "for (Component c : unnullForIteration(b))\r\n      if (c != null) \r\n        a.a...";
        }
      });
    }
  }

  static public <A> boolean syncEmpty(Collection<A> l) {
    if (l == null)
      return true;
    synchronized (l) {
      return l.isEmpty();
    }
  }

  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 <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 List callF_all(Collection l, Object... args) {
    return map(l, f -> callF(f, args));
  }

  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 <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 void set(BitSet bs, int idx) {
    {
      if (bs != null)
        bs.set(idx);
    }
  }

  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 Map<Class, Set<String>> allFields_cache = weakHashMap();

  static public Set<String> allFields(Object o) {
    if (o == null)
      return emptySet();
    Class _c = _getClass(o);
    Set<String> fields = allFields_cache.get(_c);
    if (fields == null)
      allFields_cache.put(_c, fields = asTreeSet(keys(getOpt_getFieldMap(o))));
    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 defaultThreadName_name;

  static public String defaultThreadName() {
    if (defaultThreadName_name == null)
      defaultThreadName_name = "A thread by " + programID();
    return defaultThreadName_name;
  }

  static public Runnable wrapAsActivity(Object r) {
    if (r == null)
      return null;
    Runnable r2 = toRunnable(r);
    Object mod = dm_current_generic();
    if (mod == null)
      return r2;
    return new Runnable() {

      public void run() {
        try {
          AutoCloseable __1 = (AutoCloseable) (rcall("enter", mod));
          try {
            r2.run();
          } finally {
            _close(__1);
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "temp (AutoCloseable) rcall enter(mod);\r\n    r2.run();";
      }
    };
  }

  static public Thread newThread(Object runnable) {
    return new BetterThread(_topLevelErrorHandling(toRunnable(runnable)));
  }

  static public Thread newThread(Object runnable, String name) {
    if (name == null)
      name = defaultThreadName();
    return new BetterThread(_topLevelErrorHandling(toRunnable(runnable)), name);
  }

  static public Thread newThread(String name, Object runnable) {
    return newThread(runnable, name);
  }

  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 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 Class<?> hotwire(String src) {
    return hotwire(src, __1 -> mainClassNameForClassLoader(__1));
  }

  static public Class<?> hotwire(String src, IF1<ClassLoader, String> calculateMainClass) {
    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 Object pcallFunction(Object f, Object... args) {
    try {
      return callFunction(f, args);
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return null;
  }

  static public void cancelThread(Thread t) {
    if (t == null)
      return;
    ping();
    synchronized (ping_actions) {
      ping_actions.put(t, "cancelled");
      ping_anyActions = true;
    }
  }

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

  static public <A> List<A> uniquify(Collection<A> l) {
    return uniquifyList(l);
  }

  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 <A> List<A> cloneAndClearList(Collection<A> l) {
    List<A> l2 = cloneList(l);
    l.clear();
    return 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 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 <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 <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 AutoCloseable tempInterceptPrint(F1<String, Boolean> f) {
    return tempSetThreadLocal(print_byThread(), f);
  }

  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 DynModule dm_current() {
    return dm_currentModule();
  }

  static public void failIfUnlicensed() {
    assertTrue("license off", licensed());
  }

  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 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 void printVars(Object... params) {
    printVars_str(params);
  }

  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 : unnullForIteration(c)) if (best == null || alphaNumComparator().compare(s, best) < 0)
      best = s;
    return best;
  }

  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 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 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> 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 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 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 int getPreferredWidth(Component c) {
    return preferredWidth(c);
  }

  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 Object interceptPrintInThisThread(Object f) {
    Object old = print_byThread().get();
    print_byThread().set(f);
    return old;
  }

  static public Object mainBot() {
    return getMainBot();
  }

  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 IResourceLoader vm_getResourceLoader() {
    return proxy(IResourceLoader.class, vm_generalMap_get("_officialResourceLoader"));
  }

  static public boolean isImageServerSnippet(long id) {
    return id >= 1100000 && id < 1200000;
  }

  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 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 <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 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 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 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 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 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 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 String formatWithThousandsSeparator(long l) {
    return NumberFormat.getInstance(new Locale("en_US")).format(l);
  }

  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 String fsI(String id) {
    return formatSnippetID(id);
  }

  static public String fsI(long id) {
    return formatSnippetID(id);
  }

  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 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 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 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 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 String addLineBreak(String s) {
    return addSuffix(s, "\n");
  }

  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 <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 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 Object serveByteArray(byte[] data, String mimeType) {
    return subBot_serveByteArray(data, mimeType);
  }

  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 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 <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 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 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 boolean containsNulls(Collection c) {
    return contains(c, null);
  }

  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 void _registerIO(Object object, String path, boolean opened) {
  }

  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 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 <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 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 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 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, 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 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 <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 String charToString(char c) {
    return String.valueOf(c);
  }

  static public String charToString(int c) {
    return String.valueOf((char) c);
  }

  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> 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 CloseableIterableIterator<String> linesFromFile(File f) {
    return linesFromFile(f, null);
  }

  static public CloseableIterableIterator<String> linesFromFile(File f, IResourceHolder resourceHolder) {
    try {
      if (!f.exists())
        return emptyCloseableIterableIterator();
      if (ewic(f.getName(), ".gz"))
        return linesFromReader(utf8bufferedReader(newGZIPInputStream(f)), resourceHolder);
      return linesFromReader(utf8bufferedReader(f), resourceHolder);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public CloseableIterableIterator<String> linesFromFile(String path) {
    return linesFromFile(path, null);
  }

  static public CloseableIterableIterator<String> linesFromFile(String path, IResourceHolder resourceHolder) {
    return linesFromFile(newFile(path), resourceHolder);
  }

  static public SimpleDateFormat simpleDateFormat_local(String format) {
    SimpleDateFormat sdf = new SimpleDateFormat(format);
    sdf.setTimeZone(localTimeZone());
    return sdf;
  }

  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 base64(byte[] a) {
    return base64encode(a);
  }

  static public BufferedImage dropAlphaChannelFromBufferedImage(BufferedImage img) {
    if (img == null || img.getType() == BufferedImage.TYPE_INT_RGB)
      return img;
    int w = img.getWidth(), h = img.getHeight();
    BufferedImage newImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
    int[] rgb = img.getRGB(0, 0, w, h, null, 0, w);
    newImage.setRGB(0, 0, w, h, rgb, 0, w);
    return newImage;
  }

  static public BufferedImage loadImage2(String snippetIDOrURL) {
    return loadBufferedImage(snippetIDOrURL);
  }

  static public BufferedImage loadImage2(File file) {
    return loadBufferedImage(file);
  }

  static public long toK(long l) {
    return (l + 1023) / 1024;
  }

  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 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 <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 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 String joinNemptiesWithSemicolon(String... strings) {
    return joinNempties("; ", strings);
  }

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

  static public String reverseString(String s) {
    return empty(s) ? s : new StringBuilder(s).reverse().toString();
  }

  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 ThreadLocal<VF1<File>> checkFileNotTooBigToRead_tl = new ThreadLocal();

  static public void checkFileNotTooBigToRead(File f) {
    callF(checkFileNotTooBigToRead_tl.get(), f);
  }

  static public String actualProgramID() {
    return programID();
  }

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

  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 String upper(String s) {
    return s == null ? null : s.toUpperCase();
  }

  static public char upper(char c) {
    return Character.toUpperCase(c);
  }

  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 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 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 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 <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 String getStackTrace2(Throwable e) {
    return hideCredentials(getStackTrace(unwrapTrivialExceptionWraps(e)) + replacePrefix("java.lang.RuntimeException: ", "FAIL: ", hideCredentials(str(innerException2(e)))) + "\n");
  }

  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 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)(\\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);
      int minute = matcherInt(matcher, 6);
      long time = timestampFromYMDHM(year, month, day, hour, minute);
      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 Random defaultRandomGenerator() {
    return ThreadLocalRandom.current();
  }

  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 boolean isCISet(Iterable<String> l) {
    return l instanceof TreeSet && ((TreeSet) l).comparator() == caseInsensitiveComparator();
  }

  static public SimpleDateFormat simpleDateFormat_timeZone(String format, String timeZone) {
    SimpleDateFormat sdf = new SimpleDateFormat(format);
    sdf.setTimeZone(timeZone(timeZone));
    return sdf;
  }

  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 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 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 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 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 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 double doubleRatio(double x, double y) {
    return y == 0 ? 0 : x / y;
  }

  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 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 boolean vmBus_noObjections(String msg, Object... args) {
    return !vmBus_anyFalse(msg, args);
  }

  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 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 void sleepInCleanUp(long ms) {
    try {
      if (ms < 0)
        return;
      Thread.sleep(ms);
    } catch (Exception __e) {
      throw rethrow(__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 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(__69 -> wrapForSmartAdd_jComponent(__69), 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(__70 -> wrapForSmartAdd_jComponent(__70), 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 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 <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 <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 <A> List<A> wrapArrayAsList(A[] a) {
    return a == null ? null : Arrays.asList(a);
  }

  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> splitAtColon(String s) {
    return empty(s) ? emptyList() : asList(s.split(":"));
  }

  static public String stringOptPar(Object[] params, String name) {
    return (String) optPar(params, name);
  }

  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 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 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(String url, Map urlParameters) {
    return doPost(urlParameters, url);
  }

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

  static public <A> AutoCloseable tempSetTL(x30_pkg.x30_util.BetterThreadLocal<A> tl, A a) {
    return tempSetThreadLocalIfNecessary(tl, a);
  }

  static public String hcomment_unescaped(String text) {
    return "<!-- " + text + " -->";
  }

  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 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 File getProgramDir() {
    return programDir();
  }

  static public File getProgramDir(String snippetID) {
    return programDir(snippetID);
  }

  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 <A> A listGet(List<A> l, int idx) {
    return l != null && idx >= 0 && idx < l(l) ? l.get(idx) : null;
  }

  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 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 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 List<Class> getClasses(Object[] array) {
    List<Class> l = emptyList(l(array));
    for (Object o : array) l.add(_getClass(o));
    return l;
  }

  static public boolean startsWithIgnoreCase(String a, String b) {
    return regionMatchesIC(a, 0, b, 0, b.length());
  }

  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 <A> List<A> dropFirstThreeAndLastThree(List<A> l) {
    return dropFirstAndLast(3, l);
  }

  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 List<String> javaTokPlusBrackets(String s) {
    return tok_combineRoundOrCurlyBrackets_keep(javaTok(s));
  }

  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 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 char lastChar(String s) {
    return empty(s) ? '\0' : s.charAt(l(s) - 1);
  }

  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 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 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 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 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 Object pcallF_minimalExceptionHandling(Object f, Object... args) {
    try {
      return callFunction(f, args);
    } catch (Throwable e) {
      System.out.println(getStackTrace(e));
      _storeException(e);
    }
    return null;
  }

  static public <A> Collection<A> asCollection(Iterable<A> l) {
    return l == null ? null : l instanceof Collection ? ((Collection) l) : asList(l);
  }

  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 <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 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 String dropTags(String html) {
    return dropAllTags(html);
  }

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

  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) {
        f.set(o, ((Long) value).intValue());
        return;
      }
      if (type == boolean.class && value instanceof String) {
        f.set(o, isTrueOrYes(((String) value)));
        return;
      }
      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 <A, B> Map<A, B> weakHashMap() {
    return newWeakHashMap();
  }

  static public Set emptySet() {
    return new HashSet();
  }

  static public <A> TreeSet<A> asTreeSet(Collection<A> set) {
    return set == null ? null : set instanceof TreeSet ? (TreeSet) set : new TreeSet(set);
  }

  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 Map<String, Field> getOpt_getFieldMap(Object o) {
    Class c = _getClass(o);
    HashMap<String, Field> map = getOpt_cache.get(c);
    if (map == null)
      map = getOpt_makeCache(c);
    return map;
  }

  static public Object getOpt_cached(Object o, String field) {
    try {
      if (o == null)
        return null;
      Map<String, Field> map = getOpt_getFieldMap(o);
      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 syncMapGet2(((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 int hashCode(Object a) {
    return a == null ? 0 : a.hashCode();
  }

  static public Runnable _topLevelErrorHandling(Runnable r) {
    if (r == null)
      return null;
    Object info = _threadInfo();
    Object mod = dm_current_generic();
    if (info == null && mod == null)
      return r;
    return new Runnable() {

      public void run() {
        try {
          AutoCloseable __1 = (AutoCloseable) (rcall("enter", mod));
          try {
            _threadInheritInfo(info);
            r.run();
          } finally {
            _close(__1);
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "temp (AutoCloseable) rcall enter(mod);\r\n    _threadInheritInfo(info);\r\n    r....";
      }
    };
  }

  static public <A> WeakReference<A> weakRef(A a) {
    return newWeakReference(a);
  }

  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 Object callFunction(Object f, Object... args) {
    return callF(f, args);
  }

  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 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 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 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 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 <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 boolean isString(Object o) {
    return o instanceof String;
  }

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

  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_callOS(String functionName, Object... args) {
    return call(dm_os(), functionName, args);
  }

  static public Object dm_resolveModule(Object moduleOrStem) {
    return dm_callOS("resolveModule", moduleOrStem);
  }

  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 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 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 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 boolean domainIsUnder(String domain, String mainDomain) {
    return eqic(domain, mainDomain) || ewic(domain, "." + mainDomain);
  }

  static public String theAGIBlueDomain() {
    return "agi.blue";
  }

  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 Object vm_generalMap_get(Object key) {
    return vm_generalMap().get(key);
  }

  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);
    }
  }

  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 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 <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 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 boolean isLetter(char c) {
    return Character.isLetter(c);
  }

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

  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 Object subBot_serveByteArray(byte[] data, String mimeType) {
    return call(mainBot(), "serveByteArray", data, mimeType);
  }

  static public boolean isStringStartingWith(Object o, String prefix) {
    return o instanceof String && ((String) o).startsWith(prefix);
  }

  static public Object jsonDecode(String text) {
    return new jsonDecode_Y(text).parse();
  }

  static public class jsonDecode_Y {

    public String text;

    public List<String> tok;

    public boolean useOrderedMaps = false;

    public int i = 1;

    public jsonDecode_Y(String text) {
      this.text = text;
      tok = jsonTok(text);
    }

    transient public IF1<String, RuntimeException> fail;

    public RuntimeException fail(String msg) {
      return fail != null ? fail.get(msg) : fail_base(msg);
    }

    final public RuntimeException fail_fallback(IF1<String, RuntimeException> _f, String msg) {
      return _f != null ? _f.get(msg) : fail_base(msg);
    }

    public RuntimeException fail_base(String msg) {
      return main.fail(msg);
    }

    public Object parse() {
      if (l(tok) == 1)
        return null;
      return parseExpr();
    }

    public Object parseExpr() {
      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 fail("Unknown token " + (i + 1) + ": " + t + ": " + text);
    }

    public Object parseList() {
      consume("[");
      List list = new ArrayList();
      while (!tok.get(i).equals("]")) {
        list.add(parseExpr());
        if (tok.get(i).equals(","))
          i += 2;
      }
      consume("]");
      return list;
    }

    public Object parseMap() {
      consume("{");
      Map map = useOrderedMaps ? new LinkedHashMap() : new TreeMap();
      while (!tok.get(i).equals("}")) {
        String key = unquote(tok.get(i));
        i += 2;
        consume(":");
        Object value = parseExpr();
        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;
    }
  }

  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 JTextField consoleInputField() {
    Object console = get(getJavaX(), "console");
    return (JTextField) getOpt(console, "tfInput");
  }

  static public void revalidateFrame(Component c) {
    revalidate(getFrame(c));
  }

  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 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 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 CloseableIterableIterator<String> linesFromReader(Reader r) {
    return linesFromReader(r, null);
  }

  static public CloseableIterableIterator<String> linesFromReader(Reader r, IResourceHolder resourceHolder) {
    final BufferedReader br = bufferedReader(r);
    return holdResource(resourceHolder, 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 in == null ? null : 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 TimeZone localTimeZone() {
    return getTimeZone(standardTimeZone());
  }

  static public String hijackPrint(Runnable r) {
    return hijackPrint((Object) r);
  }

  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(A l) {
    return pnl("", l);
  }

  static public <A extends Iterable> A pnl(String prefix, A l) {
    printNumberedLines(prefix, l);
    return l;
  }

  static public <A> A[] pnl(A[] l) {
    return pnl("", l);
  }

  static public <A> A[] pnl(String prefix, A[] l) {
    printNumberedLines(prefix, 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 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 String base64encode(byte[] a) {
    int aLen = a.length;
    int numFullGroups = aLen / 3;
    int numBytesInPartialGroup = aLen - 3 * numFullGroups;
    int resultLen = 4 * ((aLen + 2) / 3);
    StringBuffer result = new StringBuffer(resultLen);
    char[] intToAlpha = intToBase64;
    int inCursor = 0;
    for (int i = 0; i < numFullGroups; i++) {
      int byte0 = a[inCursor++] & 0xff;
      int byte1 = a[inCursor++] & 0xff;
      int byte2 = a[inCursor++] & 0xff;
      result.append(intToAlpha[byte0 >> 2]);
      result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
      result.append(intToAlpha[(byte1 << 2) & 0x3f | (byte2 >> 6)]);
      result.append(intToAlpha[byte2 & 0x3f]);
    }
    if (numBytesInPartialGroup != 0) {
      int byte0 = a[inCursor++] & 0xff;
      result.append(intToAlpha[byte0 >> 2]);
      if (numBytesInPartialGroup == 1) {
        result.append(intToAlpha[(byte0 << 4) & 0x3f]);
        result.append("==");
      } else {
        int byte1 = a[inCursor++] & 0xff;
        result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
        result.append(intToAlpha[(byte1 << 2) & 0x3f]);
        result.append('=');
      }
    }
    return result.toString();
  }

  static final public char[] intToBase64 = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' };

  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 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 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 <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 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 boolean possibleMD5(String s) {
    return isMD5(s);
  }

  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 public Throwable getException(Runnable r) {
    try {
      callF(r);
      return null;
    } catch (Throwable e) {
      return e;
    }
  }

  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 timestampFromYMDHM(int y, int m, int d, int h, int minutes) {
    return new GregorianCalendar(y, m - 1, d, h, minutes).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 <= 1 / 12.0)
      return true;
    if (age <= 0.5 && age >= lastAge + 1 / 12.0)
      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 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 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 String fromUtf8(byte[] bytes) {
    try {
      return bytes == null ? null : new String(bytes, utf8charset());
    } 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 Runnable asRunnable(Object o) {
    return toRunnable(o);
  }

  static public void _inheritThreadInfo(Object info) {
    _threadInheritInfo(info);
  }

  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 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 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 AbstractAction abstractAction(String name, final Object runnable) {
    return new AbstractAction(name) {

      public void actionPerformed(ActionEvent evt) {
        pcallF(runnable);
      }
    };
  }

  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 <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 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 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 Window getWindow(Object o) {
    if (!(o instanceof Component))
      return null;
    return swing(() -> {
      Component c = (Component) o;
      while (c != null) {
        if (c instanceof Window)
          return ((Window) c);
        c = c.getParent();
      }
      return null;
    });
  }

  static public Dimension getScreenSize() {
    return Toolkit.getDefaultToolkit().getScreenSize();
  }

  static public boolean vmBus_anyFalse(String msg, Object... args) {
    return contains(vmBus_queryAll(msg, args), false);
  }

  static public int toMS_int(double seconds) {
    return toInt_checked((long) (seconds * 1000));
  }

  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 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 Lock downloadLock_lock = fairLock();

  static public Lock downloadLock() {
    return downloadLock_lock;
  }

  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 <A, B> List<B> mapLL(IF1<A, B> f, A... data) {
    return map(f, ll(data));
  }

  static public JComponent wrapForSmartAdd_jComponent(Object o) {
    return componentToJComponent(wrapForSmartAdd(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 <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 boolean isLetterOrDigit(char c) {
    return Character.isLetterOrDigit(c);
  }

  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 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 int lUtf8(String s) {
    return l(utf8(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 <A> AutoCloseable tempSetThreadLocalIfNecessary(ThreadLocal<A> tl, A a) {
    if (tl == null)
      return null;
    A prev = tl.get();
    if (eq(prev, a))
      return null;
    tl.set(a);
    return new AutoCloseable() {

      public String toString() {
        return "tl.set(prev);";
      }

      public void close() throws Exception {
        tl.set(prev);
      }
    };
  }

  static public <A> AutoCloseable tempSetThreadLocalIfNecessary(x30_pkg.x30_util.BetterThreadLocal<A> tl, A a) {
    if (tl == null)
      return null;
    A prev = tl.get();
    if (eq(prev, a))
      return null;
    tl.set(a);
    return new AutoCloseable() {

      public String toString() {
        return "tl.set(prev);";
      }

      public void close() throws Exception {
        tl.set(prev);
      }
    };
  }

  static public <A> Set<A> cloneSet(Collection<A> set) {
    if (set == null)
      return new HashSet();
    synchronized (collectionMutex(set)) {
      Set<A> s = similarEmptySet(set);
      s.addAll(set);
      return s;
    }
  }

  static public List<String> javaTokForStructure(String s) {
    return javaTok_noMLS(s);
  }

  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 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 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> 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 boolean startsWithAndEndsWith(String s, String prefix, String suffix) {
    return startsWith(s, prefix) && endsWith(s, suffix);
  }

  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 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 <A, B> Map<A, B> synchronizedMRUCache(int maxSize) {
    return synchroMap(new MRUCache(maxSize));
  }

  static public int defaultTokenizerCacheSize() {
    return 1000;
  }

  static public List<String> javaTokWithAllBrackets(String s) {
    return javaTokPlusBrackets2(s);
  }

  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 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 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 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 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[] 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 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 Throwable _storeException_value;

  static public void _storeException(Throwable e) {
    _storeException_value = e;
  }

  static public String[] asStringArray(Collection<String> c) {
    return toStringArray(c);
  }

  static public String[] asStringArray(Object o) {
    return toStringArray(o);
  }

  static public boolean isTrueOrYes(Object o) {
    return isTrueOpt(o) || o instanceof String && (eqicOneOf(((String) o), "1", "t", "true") || isYes(((String) o)));
  }

  static public void clear(Collection c) {
    if (c != null)
      c.clear();
  }

  static public void clear(Map map) {
    if (map != null)
      map.clear();
  }

  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 syncMapGet2(Map<A, B> map, A a) {
    if (map == null)
      return null;
    synchronized (collectionMutex(map)) {
      return map.get(a);
    }
  }

  static public <A, B> B syncMapGet2(A a, Map<A, B> map) {
    return syncMapGet2(map, 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 <A> WeakReference<A> newWeakReference(A a) {
    return a == null ? null : new WeakReference(a);
  }

  static public void setOptIfNotNull(Object o, String field, Object value) {
    if (value != null)
      setOpt(o, field, value);
  }

  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 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<Component, String> componentID_map = weakHashMap();

  static public String componentID(Component c) {
    return c == null ? null : componentID_map.get(c);
  }

  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 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 <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 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 String assertIdentifier(String s) {
    return assertIsIdentifier(s);
  }

  static public String assertIdentifier(String msg, String s) {
    return assertIsIdentifier(msg, s);
  }

  static public Object dm_os() {
    {
      Object __1 = vm_generalMap_get("stefansOS");
      if (__1 != null)
        return __1;
    }
    return creator();
  }

  static public List<String> dm_listModuleIDs() {
    return map(__71 -> dm_moduleID(__71), 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 boolean hasMethod(Object o, String method, Object... args) {
    return findMethod_cached(o, method, args) != null;
  }

  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 boolean isCurlyBraced(String s) {
    List<String> tok = tok_combineCurlyBrackets_keep(javaTok(s));
    return l(tok) == 3 && startsWithAndEndsWith(tok.get(1), "{", "}");
  }

  static public String tok_unCurlyBracket(String s) {
    return isCurlyBraced(s) ? join(dropFirstThreeAndLastThree(javaTok(s))) : s;
  }

  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 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 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 (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 <A> A getAndClearThreadLocal(ThreadLocal<A> tl) {
    A a = tl.get();
    tl.set(null);
    return a;
  }

  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 File renameFile_assertTrue(File a, File b) {
    try {
      if (a.equals(b))
        return b;
      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));
      return b;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  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 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 Class main() {
    return getMainClass();
  }

  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 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 BufferedReader bufferedReader(Reader r) {
    return bufferedReader(r, 8192);
  }

  static public BufferedReader bufferedReader(Reader r, int bufSize) {
    if (r == null)
      return null;
    return r instanceof BufferedReader ? (BufferedReader) r : _registerIOWrap(new BufferedReader(r, bufSize), r);
  }

  static public <A extends AutoCloseable> A holdResource(IResourceHolder holder, A a) {
    {
      if (holder != null)
        holder.add(a);
    }
    return a;
  }

  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 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 TimeZone getTimeZone(String name) {
    return TimeZone.getTimeZone(name);
  }

  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("", l);
  }

  static public void printNumberedLines(String prefix, Object[] l) {
    printNumberedLines(prefix, asList(l));
  }

  static public void printNumberedLines(Object o) {
    printNumberedLines(lines(str(o)));
  }

  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 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 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 boolean isMD5(String s) {
    return l(s) == 32 && isLowerHexString(s);
  }

  static public WeakReference<Object> creator_class;

  static public Object creator() {
    return creator_class == null ? null : creator_class.get();
  }

  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 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 boolean isDirectory(File f) {
    return f != null && f.isDirectory();
  }

  static public boolean isDirectory(String path) {
    return path != null && isDirectory(newFile(path));
  }

  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 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 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 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 void addMenuItem(JMenuBar menuBar, String text, Runnable action) {
    addMenuItem(menuBar, jmenuItem(text, action));
  }

  static public void addMenuItem(JMenuBar menuBar, JMenuItem menuItem) {
    addDirectMenuItem(menuBar, menuItem);
  }

  static public Object vm_generalMap_put(Object key, Object value) {
    return mapPutOrRemove(vm_generalMap(), key, value);
  }

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

  static public File standardLogFile() {
    return getProgramFile("log");
  }

  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 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 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 List vmBus_queryAll(String msg, Object... args) {
    Object arg = vmBus_wrapArgs(args);
    List out = new ArrayList();
    for (Object o : unnullForIteration(vm_busListeners_live())) addIfNotNull(out, pcallF(o, msg, arg));
    for (Object o : unnullForIteration(vm_busListenersByMessage_live().get(msg))) addIfNotNull(out, pcallF(o, msg, arg));
    return out;
  }

  static public int toInt_checked(long l) {
    if (l != (int) l)
      throw fail("Too large for int: " + l);
    return (int) l;
  }

  static public boolean headless() {
    return isHeadless();
  }

  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 Component wrapForSmartAdd(Object o) {
    if (o == null)
      return jpanel();
    if (o instanceof String)
      return jlabel((String) o);
    return wrap(o);
  }

  static public boolean containsSpace(String s) {
    return containsSpaces(s);
  }

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

  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 String getComputerID_quick() {
    return computerID();
  }

  static public byte[] utf8(String s) {
    return toUtf8(s);
  }

  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 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 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 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 List<String> javaTokPlusBrackets2(String s) {
    return tok_combineRoundCurlySquareBrackets_keep(javaTok(s));
  }

  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 List<String> parse3(String s) {
    return dropPunctuation(javaTokPlusPeriod(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 boolean equalsIgnoreCase(String a, String b) {
    return eqic(a, b);
  }

  static public boolean equalsIgnoreCase(char a, char b) {
    return eqic(a, b);
  }

  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 boolean isTrueOpt(Object o) {
    if (o instanceof Boolean)
      return ((Boolean) o).booleanValue();
    return false;
  }

  static public List<String> isYes_yesses = litlist("y", "yes", "yeah", "y", "yup", "yo", "corect", "sure", "ok", "afirmative");

  static public boolean isYes(String s) {
    return isYes_yesses.contains(collapseWord(toLowerCase(get(parse3(s), 1))));
  }

  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 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;
  }

  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 List dm_listStems() {
    return (List) dm_callOS("onModules");
  }

  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 containsNewLines(String s) {
    return containsNewLine(s);
  }

  static public String jlabel_textAsHTML_center(String text) {
    return "<html><div style=\"text-align: center;\">" + replace(htmlencode2(text), "\n", "<br>") + "</div></html>";
  }

  static public boolean networkAllowanceTest(String url) {
    return isAllowed("networkAllowanceTest", url);
  }

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

  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 Matcher regexpMatcher(String pat, String s) {
    return compileRegexp(pat).matcher(unnull(s));
  }

  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 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 List<AbstractButton> buttonsInGroup(ButtonGroup g) {
    if (g == null)
      return ll();
    return asList(g.getElements());
  }

  static public String afterLastSpace(String s) {
    return s == null ? null : substring(s, s.lastIndexOf(' ') + 1);
  }

  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 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 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 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 String mcDollar = actualMCDollar();

      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 HashMap<Class, Constructor> innerClassConstructors = new HashMap();

      public String curT;

      public char[] unquoteBuf = new char[unstructure_unquoteBufSize];

      public X() {
        try {
          Class mc = (Class) (callF(_classFinder, "<main>"));
          if (mc != null)
            mcDollar = mc.getName() + "$";
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }

      public Class findAClass(String fullClassName) {
        try {
          return classFinder != null ? (Class) callF(classFinder, fullClassName) : findClass_fullName(fullClassName);
        } catch (Throwable __e) {
          return null;
        }
      }

      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)
              warn("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)
              warn("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(synchroNavigableMap(((NavigableMap) value)));
                      return;
                    }
                    if (value instanceof SortedMap) {
                      out.set(synchroSortedMap(((SortedMap) value)));
                      return;
                    }
                    {
                      out.set(synchroMap((Map) value));
                      return;
                    }
                  } else {
                    out.set(synchroList((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 = mcDollar + 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 = mcDollar + t;
        }
        if (c == null && !allDynamic) {
          c = findAClass(fullClassName);
          if (c != null)
            classesMap.put(className, c);
        }
        if (c == null && !allDynamic) {
          Set<String> seen = new HashSet();
          String parent = className;
          while (true) {
            String baseName = baseClassMap.get(parent);
            if (baseName == null)
              break;
            if (!seen.add(baseName))
              throw fail("Cyclic superclass info: " + baseName);
            c = findAClass(mcDollar + baseName);
            if (c == null)
              print("Base class " + baseName + " of " + parent + " doesn't exist either");
            else if (isAbstract(c))
              print("Can't instantiate abstract base class: " + c);
            else {
              printVars_str("Reverting to base class", "className", className, "baseName", baseName, "c", c);
              classesMap.put(className, c);
              break;
            }
            parent = baseName;
          }
        }
        boolean hasBracket = eq(t(), "(");
        if (hasBracket)
          consume();
        boolean hasOuter = hasBracket && startsWith(t(), "this$");
        DynamicObject dO = null;
        Object o = null;
        final String thingName = t;
        if (c != null) {
          if (hasOuter)
            try {
              Constructor ctor = innerClassConstructors.get(c);
              if (ctor == null)
                innerClassConstructors.put(c, ctor = nuStubInnerObject_findConstructor(c, classFinder));
              o = ctor.newInstance(new Object[] { null });
            } catch (Exception e) {
              print("Error deserializing " + c + ": " + e);
              o = nuEmptyObject(c);
            }
          else
            o = nuEmptyObject(c);
          if (o instanceof DynamicObject)
            dO = (DynamicObject) o;
        } else {
          if (concepts.contains(t) && (c = findAClass(mcDollar + "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) {
        Object outer = fields.get("this$0");
        if (outer != null)
          fields.put("this$1", outer);
        else {
          outer = fields.get("this$1");
          if (outer != null)
            fields.put("this$0", outer);
        }
        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(unstructure_Receiver out) {
        String _type = tpp();
        int dims;
        if (eq(t(), "S")) {
          _type = "S";
          consume();
        }
        if (eq(t(), "/")) {
          consume();
          dims = parseInt(tpp());
        } else
          dims = 1;
        consume("{");
        List list = new ArrayList();
        String type = _type;
        stack.add(new Runnable() {

          public void run() {
            try {
              if (eq(t(), "}")) {
                consume("}");
                if (dims > 1) {
                  Class atype;
                  if (type.equals("intarray"))
                    atype = int.class;
                  else if (type.equals("S"))
                    atype = String.class;
                  else
                    throw todo("multi-dimensional arrays of other types");
                  out.set(list.toArray((Object[]) newMultiDimensionalOuterArray(atype, dims, l(list))));
                } else
                  out.set(type.equals("intarray") ? toIntArray(list) : type.equals("dblarray") ? toDoubleArray(list) : type.equals("S") ? toStringArray(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          if (dims > 1) {\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(mcDollar, 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 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 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 Object callJavaX(String method, Object... args) {
    return callOpt(getJavaX(), method, args);
  }

  static public MenuItem menuItem(String text, final Object r) {
    MenuItem mi = new MenuItem(text);
    mi.addActionListener(actionListener(r));
    return mi;
  }

  static public void addDirectMenuItem(JMenuBar mb, String text, Object action) {
    if (mb != null) {
      swing(new Runnable() {

        public void run() {
          try {
            addDirectMenuItem(mb, directJMenuItem(text, action));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "addDirectMenuItem(mb, directJMenuItem(text, action));";
        }
      });
    }
  }

  static public void addDirectMenuItem(Component c, String text, Object action) {
    addDirectMenuItem(addMenuBar(c), text, action);
  }

  static public void addDirectMenuItem(JMenuBar mb, JMenuItem menuItem) {
    if (mb != null) {
      swing(new Runnable() {

        public void run() {
          try {
            mb.add(menuItem);
            revalidate(mb);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "mb.add(menuItem);\r\n    revalidate(mb);";
        }
      });
    }
  }

  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 <A> Set<A> synchroWeakHashSet() {
    return Collections.newSetFromMap((Map) newWeakHashMap());
  }

  static public JTextArea jTextArea() {
    return jTextArea("");
  }

  static public JTextArea jTextArea(final String text) {
    return jTextAreaWithUndo(text);
  }

  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 <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 boolean isLocalSnippetID(String snippetID) {
    return isSnippetID(snippetID) && isLocalSnippetID(psI(snippetID));
  }

  static public boolean isLocalSnippetID(long snippetID) {
    return snippetID >= 1000 && snippetID <= 9999;
  }

  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 String standardCredentials_noCookies() {
    return standardCredentials() + "&noCookies=1";
  }

  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 Rect rect(Pt p, int w, int h) {
    return new Rect(p.x, p.y, w, h);
  }

  static public Rect rect(int w, int h) {
    return new Rect(0, 0, 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 <A> void forEach(A[] l, IVF1<A> f) {
    if (l != null)
      for (A a : l) callF(f, a);
  }

  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 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[] 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 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 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 <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 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 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> 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 String collapseWord(String s) {
    if (s == null)
      return "";
    StringBuilder buf = new StringBuilder();
    for (int i = 0; i < l(s); i++) if (i == 0 || !charactersEqualIC(s.charAt(i), s.charAt(i - 1)))
      buf.append(s.charAt(i));
    return buf.toString();
  }

  static public List<String> toLowerCase(List<String> strings) {
    List<String> x = new ArrayList();
    for (String s : strings) x.add(s.toLowerCase());
    return x;
  }

  static public String[] toLowerCase(String[] strings) {
    String[] x = new String[l(strings)];
    for (int i = 0; i < l(strings); i++) x[i] = strings[i].toLowerCase();
    return x;
  }

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

  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 boolean containsNewLine(String s) {
    return contains(s, '\n');
  }

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

  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 long round(double d) {
    return Math.round(d);
  }

  static public String round(String s) {
    return roundBracket(s);
  }

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

  static public String hmsWithColons(long time) {
    return new SimpleDateFormat("HH:mm:ss").format(time);
  }

  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;
    }
  }

  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 isDigit(char c) {
    return Character.isDigit(c);
  }

  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 actualMCDollar() {
    return actualMC().getName() + "$";
  }

  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 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 List parseList(String s) {
    return (List) safeUnstructure(s);
  }

  static public <A> List<A> synchroLinkedList() {
    return Collections.synchronizedList(new LinkedList<A>());
  }

  static public <A, B> NavigableMap<A, B> synchroNavigableMap(NavigableMap<A, B> map) {
    return (NavigableMap) call(Collections.class, "synchronizedNavigableMap", map);
  }

  static public <A, B> SortedMap<A, B> synchroSortedMap(SortedMap<A, B> map) {
    return Collections.synchronizedSortedMap(map);
  }

  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 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> Constructor nuStubInnerObject_findConstructor(Class<A> c) {
    return nuStubInnerObject_findConstructor(c, null);
  }

  static public <A> Constructor nuStubInnerObject_findConstructor(Class<A> c, Object classFinder) {
    try {
      Class outerType = getOuterClass(c, classFinder);
      Constructor m = c.getDeclaredConstructor(outerType);
      makeAccessible(m);
      return m;
    } 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 {
          dynamicObject_setRawFieldValue(o, 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) {
    dynamicObject_setRawFieldValue(o, 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 RuntimeException todo() {
    throw new RuntimeException("TODO");
  }

  static public RuntimeException todo(Object msg) {
    throw new RuntimeException("TODO: " + msg);
  }

  static public Object newMultiDimensionalOuterArray(Class elementType, int dimensions, int length) {
    int[] dims = new int[dimensions];
    dims[0] = length;
    return Array.newInstance(elementType, dims);
  }

  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 TreeSet<String> ciSet() {
    return caseInsensitiveSet();
  }

  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 Object callOptMC(String method, Object... args) {
    return callOpt(mc(), method, args);
  }

  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 String)
      return numberOfMethodArguments(mc(), (String) f);
    return numberOfMethodArguments(f, "get");
  }

  static public JMenuItem directJMenuItem(Action a) {
    return new JMenuItem(a) {

      public Dimension getMaximumSize() {
        return new Dimension(super.getPreferredSize().width, super.getMaximumSize().height);
      }
    };
  }

  static public JMenuItem directJMenuItem(String text, Object action) {
    return directJMenuItem(abstractAction(text, action));
  }

  static public JMenuBar addMenuBar(final Component c) {
    return swing(new F0<JMenuBar>() {

      public JMenuBar get() {
        try {
          RootPaneContainer f = getPossiblyInternalFrame(c);
          if (f == null)
            return null;
          JMenuBar bar = (JMenuBar) (call(f, "getJMenuBar"));
          if (bar == null) {
            setMenuBar(f, bar = new JMenuBar());
            revalidate((Component) f);
          }
          return bar;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "RootPaneContainer f = getPossiblyInternalFrame(c);\r\n    if (f == null) null;\r...";
      }
    });
  }

  static public JTextArea jTextAreaWithUndo() {
    return jTextAreaWithUndo("");
  }

  static public JTextArea jTextAreaWithUndo(final String text) {
    return jenableUndoRedo(swingNu(JTextArea.class, text));
  }

  static public String getSelectedItem(JList l) {
    return (String) l.getSelectedValue();
  }

  static public String getSelectedItem(JComboBox cb) {
    return strOrNull(cb.getSelectedItem());
  }

  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 Object[] muricaCredentials() {
    String pass = muricaPassword();
    return nempty(pass) ? new Object[] { "_pass", pass } : new Object[0];
  }

  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 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 File computerIDFile() {
    return javaxDataDir("Basic Info/computer-id.txt");
  }

  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 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 List<String> nlTok(String s) {
    return javaTokPlusPeriod(s);
  }

  static public boolean charactersEqualIC(char c1, char c2) {
    if (c1 == c2)
      return true;
    char u1 = Character.toUpperCase(c1);
    char u2 = Character.toUpperCase(c2);
    if (u1 == u2)
      return true;
    return Character.toLowerCase(u1) == Character.toLowerCase(u2);
  }

  static public String stream2string(InputStream in) {
    return utf8streamToString(in);
  }

  static public String quickSubstring(String s, int i, int j) {
    if (i == j)
      return "";
    return s.substring(i, j);
  }

  static public Class actualMC() {
    return or((Class) realMC(), mc());
  }

  static public <A> boolean addToCollection(Collection<A> c, A a) {
    return c != null && c.add(a);
  }

  static public Object safeUnstructure(String s) {
    return unstructure(s, true);
  }

  static public Object safeUnstructure(File f) {
    return safeUnstructureGZFile(f);
  }

  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 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) {
    return (HashMap) getOpt_getFieldMap(o);
  }

  static public void dynamicObject_setRawFieldValue(DynamicObject o, Object key, Object value) {
    if (o == null)
      return;
    synchronized (o) {
      o.fieldValues = syncMapPut2_createLinkedHashMap((LinkedHashMap) o.fieldValues, key, value);
    }
  }

  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().startsWith("this$"))
        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 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 RootPaneContainer getPossiblyInternalFrame(Component c) {
    JInternalFrame f = getInternalFrame(c);
    if (f != null)
      return f;
    return optCast(RootPaneContainer.class, getWindow(c));
  }

  static public void setMenuBar(final JMenuBar mb, final RootPaneContainer f) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            call(f, "setJMenuBar", mb);
            revalidate((Component) f);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "call(f, \"setJMenuBar\", mb);\r\n    revalidate((Component) f);";
        }
      });
    }
  }

  static public void setMenuBar(RootPaneContainer f, JMenuBar mb) {
    setMenuBar(mb, f);
  }

  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 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 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 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 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 restart() {
    Object j = getJavaX();
    call(j, "cleanRestart", get(j, "fullArgs"));
  }

  static public void duplicateThisProgram() {
    nohupJavax(trim(programID() + " " + smartJoin((String[]) get(getJavaX(), "fullArgs"))));
  }

  static public void showConsole() {
    callOpt(get(javax(), "console"), "showConsole");
  }

  static public String utf8streamToString(InputStream in) {
    return readerToString(utf8bufferedReader(in));
  }

  static public Object realMC() {
    return getThreadLocal(realMC_tl());
  }

  static public Object safeUnstructureGZFile(File f) {
    try {
      if (!fileExists(f))
        return null;
      BufferedReader reader = utf8BufferedReader(gzInputStream(f));
      return unstructure_tok(javaTokC_noMLS_onReader(reader), true, null);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  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 <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 Object[] toArray(Collection c) {
    return toObjectArray(c);
  }

  static public <A> A[] toArray(Class<A> type, Iterable<A> c) {
    return toArray(c, type);
  }

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

  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 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 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 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 = swing(() -> 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 JCheckBoxMenuItem jCheckBoxMenuItem(String text, boolean checked, IVF1<Boolean> r) {
    return jCheckBoxMenuItem(text, checked, (Object) r);
  }

  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 String readerToString(Reader r) {
    try {
      if (r == null)
        return null;
      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 BufferedReader utf8BufferedReader(InputStream in) {
    return utf8bufferedReader(in);
  }

  static public BufferedReader utf8BufferedReader(File f) {
    return utf8bufferedReader(f);
  }

  static public char stringToChar(String s) {
    if (l(s) != 1)
      throw fail("bad stringToChar: " + s);
    return firstChar(s);
  }

  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 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 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 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(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(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 isChecked(JRadioButton rb) {
    return rb != null && (boolean) swing(() -> rb.isSelected());
  }

  static public boolean isLowerCase(char c) {
    return Character.isLowerCase(c);
  }

  static public char firstChar(String s) {
    return s.charAt(0);
  }

  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 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 String getLookAndFeel() {
    return getClassName(UIManager.getLookAndFeel());
  }

  static public JComponent getInternalFrameTitlePaneComponent(JInternalFrame f) {
    return (JComponent) childWithClassNameEndingWith(f, "InternalFrameTitlePane");
  }

  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 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 String addPrefixIfNotEmpty2(String prefix, String s) {
    return empty(s) ? "" : addPrefix(prefix, s);
  }

  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 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;
  }

  static public List<Class> dependentClasses() {
    return cleanUpAndGetWeakReferencesList(hotwire_classes);
  }

  static public List<WeakReference<Class>> hotwire_classes = synchroList();

  static public Class<?> hotwireDependent(String src) {
    Class c = hotwire(src);
    makeDependent(c);
    return c;
  }

  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 class Var<A> implements IVar<A>, ISetter<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(this.get());
    }
  }

  static public class BetterThread extends Thread {

    public Runnable target;

    public BetterThread(Runnable target) {
      this.target = target;
      _created();
    }

    public BetterThread(Runnable target, String name) {
      super(name);
      this.target = target;
      _created();
    }

    public void _created() {
      vmBus_send("threadCreated", this);
    }

    public void run() {
      try {
        vmBus_send("threadStarted", this);
        if (target != null)
          target.run();
      } finally {
        vmBus_send("threadEnded", this);
      }
    }

    public Runnable getTarget() {
      return target;
    }
  }

  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 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 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 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(Collection<A> keys, B value) {
      synchronized (data) {
        for (A key : unnullForIteration(keys)) put(key, 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 : unnullForIteration(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);
    }
  }

  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 + "]";
    }
  }

  final static public class ConceptFieldIndexDesc<A extends Concept, Val> extends ConceptFieldIndexBase<A, Val> {

    public ConceptFieldIndexDesc(Class<A> cc, String field) {
      super(cc, field);
    }

    public ConceptFieldIndexDesc(Concepts concepts, Class<A> cc, String field) {
      super(concepts, cc, field);
    }

    public void init() {
      valueToObject = treeMultiSetMap(reverseOrder());
    }

    public void register() {
      concepts.addFieldIndex(cc, field, 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 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 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;
    }
  }

  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 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 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 ModifiedWebRequest implements IWebRequest {

    public IWebRequest originalRequest;

    public String uri;

    public Map<String, String> params;

    public Map<String, String> headers;

    public Map<String, String> files;

    public String cookie;

    public ModifiedWebRequest(IWebRequest originalRequest) {
      this.originalRequest = originalRequest;
    }

    public String uri() {
      return uri != null ? uri : originalRequest.uri();
    }

    public Map<String, String> params() {
      return params != null ? params : originalRequest.params();
    }

    public Map<String, String> headers() {
      return headers != null ? headers : originalRequest.headers();
    }

    public Map<String, String> files() {
      return files != null ? files : originalRequest.files();
    }

    public String cookie() {
      return cookie != null ? cookie : originalRequest.cookie();
    }

    public boolean isHttps() {
      return originalRequest.isHttps();
    }
  }

  static public interface IResourceHolder {

    public <A extends AutoCloseable> A add(A a);
  }

  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 ConceptFieldIndex<A extends Concept, Val> extends ConceptFieldIndexBase<A, Val> {

    public ConceptFieldIndex(Class<A> cc, String field) {
      super(cc, field);
    }

    public ConceptFieldIndex(Concepts concepts, Class<A> cc, String field) {
      super(concepts, cc, field);
    }

    public void init() {
      valueToObject = new MultiSetMap();
    }

    public void register() {
      concepts.addFieldIndex(cc, field, this);
    }
  }

  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 F2<A, B, C> {

    abstract public C get(A a, B b);
  }

  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 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 IF2<A, B, C> {

    public C get(A a, B b);
  }

  static public class ConceptFieldIndexCI<A extends Concept> extends ConceptFieldIndexBase<A, String> {

    public ConceptFieldIndexCI(Class<A> cc, String field) {
      super(cc, field);
    }

    public ConceptFieldIndexCI(Concepts concepts, Class<A> cc, String field) {
      super(concepts, cc, field);
    }

    public void init() {
      valueToObject = ciMultiSetMap();
    }

    public void register() {
      concepts.addCIFieldIndex(cc, field, this);
    }
  }

  static public interface Producer<A> {

    public A next();
  }

  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 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 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 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);
    }
  }

  abstract static public class ConceptFieldIndexBase<A extends Concept, Val> implements IConceptIndex, IFieldIndex<A, Val>, IConceptCounter {

    public Concepts concepts;

    public Class<A> cc;

    public String field;

    public Map<A, Val> objectToValue = syncHashMap();

    public MultiSetMap<Val, A> valueToObject;

    public boolean indexNulls = true;

    public ConceptFieldIndexBase() {
      init();
    }

    public ConceptFieldIndexBase(Class<A> cc, String field) {
      this(db_mainConcepts(), cc, field);
    }

    public ConceptFieldIndexBase(Concepts concepts, Class<A> cc, String field) {
      this();
      this.field = field;
      this.cc = cc;
      this.concepts = concepts;
      concepts.addConceptIndex(this);
      for (A c : list(concepts, cc)) updateImpl(c);
      register();
    }

    abstract public void init();

    abstract public void register();

    public void update(Concept c) {
      if (!isInstance(cc, c))
        return;
      updateImpl((A) c);
    }

    synchronized public void updateImpl(A c) {
      Val newValue = (Val) (cget(c, field));
      Val oldValue = objectToValue.get(c);
      if (newValue == oldValue && (oldValue != null || objectToValue.containsKey(c)))
        return;
      valueToObject.remove(oldValue, c);
      if (isApplicableForValue(newValue)) {
        valueToObject.put(newValue, c);
        put(objectToValue, c, newValue);
      } else
        main.remove(objectToValue, c);
    }

    public synchronized void remove(Concept c) {
      if (!isInstance(cc, c))
        return;
      if (!objectToValue.containsKey(c))
        return;
      Val value = objectToValue.get(c);
      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 Collection<A> getAllIfApplicable(Val value) {
      if (!isApplicableForValue(value))
        return null;
      return unnullForIteration(valueToObject.get(value));
    }

    public boolean isApplicableForValue(Val value) {
      return true;
    }

    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 syncL(objectToValue);
    }

    public Collection<Concept> allConcepts() {
      return (Collection) keys(objectToValue);
    }

    public Object mutex() {
      return this;
    }
  }

  static public interface IContentsIndexedList2<A> extends List<A> {

    public TreeSet<HasIndex> indicesOf_treeSetOfHasIndex(Object o);
  }

  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 contains(A key, B value) {
      return containsPair(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 A keyForValue(B b) {
      synchronized (data) {
        for (A key : data.keySet()) if (data.get(key).contains(b))
          return key;
        return null;
      }
    }

    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 List<Pair<A, B>> allEntries() {
      synchronized (data) {
        List<Pair<A, B>> l = emptyList(size);
        for (Map.Entry<? extends A, ? extends Set<B>> __0 : _entrySet(data)) {
          A a = __0.getKey();
          Set<B> set = __0.getValue();
          for (B b : set) l.add(pair(a, b));
        }
        return l;
      }
    }

    public Object mutex() {
      return data;
    }

    public String toString() {
      return "mm" + str(data);
    }

    public Pair<A, B> firstEntry() {
      synchronized (data) {
        if (empty(data))
          return null;
        Map.Entry<A, Set<B>> entry = data.entrySet().iterator().next();
        return pair(entry.getKey(), first(entry.getValue()));
      }
    }

    public A firstKey() {
      synchronized (data) {
        return main.firstKey(data);
      }
    }

    public A higherKey(Object a) {
      synchronized (data) {
        return (A) ((NavigableMap) data).higherKey(a);
      }
    }
  }

  static public interface ISetter<A> {

    public void set(A a);
  }

  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 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 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 : unnullForIteration(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 : unnullForIteration(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(__80 -> th(__80), cols)));
  }

  static public <A> List<A> lastTwo(List<A> l) {
    return takeLast(2, l);
  }

  static public String hparagraphs(Collection<String> l) {
    return lines(lambdaMap(__81 -> p(__81), 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 small(Object contents, Object... params) {
    return tag("small", contents, params);
  }

  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 centerAndSouthWithMargins(int margin, Component c, Component s) {
    return applyMargin(margin, centerAndSouth(c, withTopMargin(margin, s)));
  }

  static public SingleComponentPanel singleComponentPanel() {
    return singleComponentPanel(null);
  }

  static public SingleComponentPanel singleComponentPanel(final Component c) {
    return swing(new F0<SingleComponentPanel>() {

      public SingleComponentPanel get() {
        try {
          return new SingleComponentPanel(c);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret new SingleComponentPanel(c);";
      }
    });
  }

  static public JPanel jrightalignedline(Component... components) {
    return jrightAlignedLine(components);
  }

  static public JPanel jrightalignedline(List<Component> components) {
    return jrightAlignedLine(components);
  }

  static public JPanel centerAndEastWithMargin(Component c, Component e) {
    return centerAndEastWithMarginInbetween(c, e);
  }

  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 void scpSet(SingleComponentPanel scp, Component c) {
    setSCPComponent(scp, c);
  }

  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 Type getRawType(Type t) {
    if (t instanceof ParameterizedType)
      return ((ParameterizedType) t).getRawType();
    return t;
  }

  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 <A, B> B remove(Map<A, B> map, Object a) {
    return map == null ? null : map.remove(a);
  }

  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> 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 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 <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 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 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 long sysTime() {
    return sysNow();
  }

  static public <A, B> Set<Map.Entry<A, B>> entrySet(Map<A, B> map) {
    return _entrySet(map);
  }

  static public <A> Set<A> synchronizedSet() {
    return synchroHashSet();
  }

  static public <A> Set<A> synchronizedSet(Set<A> set) {
    return Collections.synchronizedSet(set);
  }

  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) {
    Map m = similarEmptyMap(map);
    for (Map.Entry<? extends A, ? extends B> __0 : _entrySet(map)) {
      A key = __0.getKey();
      B val = __0.getValue();
      m.put(key, f.get(val));
    }
    return m;
  }

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

  static public <A> MultiSetMap<String, A> ciMultiSetMap() {
    MultiSetMap<String, A> mm = new MultiSetMap();
    mm.data = ciMap();
    return mm;
  }

  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(__82 -> digitsOnly(__82), multiMapToMap(countryDialCodesMultiMap())));
  }

  static public int toIntPercent(double ratio) {
    return roundToInt(ratio * 100);
  }

  static public int toIntPercent(float ratio) {
    return toIntPercent((double) ratio);
  }

  static public boolean hasLock(Lock lock) {
    return ((ReentrantLock) lock).isHeldByCurrentThread();
  }

  static public Map syncHashMap() {
    return synchroHashMap();
  }

  static public void register(Concept c) {
    registerConcept(c);
  }

  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 <A, B> Map.Entry<A, B> firstEntry(Map<A, B> map) {
    return empty(map) ? null : first(map.entrySet());
  }

  static public <A, B> A firstKey(Map<A, B> map) {
    return first(keys(map));
  }

  static public <A, B> A firstKey(MultiSetMap<A, B> map) {
    return map == null ? null : firstKey(map.data);
  }

  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 hjavascript_src(String src) {
    return tag("script", "", "src", src);
  }

  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 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 <A extends JComponent> A applyMargin(int top, int left, int bottom, int right, A c) {
    return addMargin(top, left, bottom, right, c);
  }

  static public <A extends JComponent> A applyMargin(int w, A c) {
    return addMargin(w, c);
  }

  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 JPanel centerAndEastWithMarginInbetween(Component c, final Component e) {
    return centerAndEast(c, withLeftMargin(e));
  }

  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 void setSCPComponent(SingleComponentPanel scp, Component c) {
    if (scp != null)
      scp.setComponent(c);
  }

  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 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 void cancelTimers(Collection timers) {
    for (Object timer : timers) cancelTimer(timer);
  }

  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> synchroHashSet() {
    return Collections.synchronizedSet(new HashSet<A>());
  }

  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(__83 -> isDigit(__83), s);
  }

  static public int roundToInt(double d) {
    return (int) Math.round(d);
  }

  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> 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(F0<A> f) {
    return iteratorFromFunction_f0(f);
  }

  static public <A> IterableIterator<A> iteratorFromFunction(IF0<A> f) {
    return iteratorFromFunction_if0(f);
  }

  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 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 <A extends JComponent> A addMargin(final int top, final int left, final int bottom, final int right, final A c) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            Border margin = BorderFactory.createEmptyBorder(top, left, bottom, right);
            c.setBorder(jCompoundBorder(c.getBorder(), margin));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "Border margin = BorderFactory.createEmptyBorder(top, left, bottom, right);\r\n ...";
        }
      });
    }
    return c;
  }

  static public <A extends JComponent> A addMargin(int w, A c) {
    return addMargin(w, w, w, w, c);
  }

  static public JPanel centerAndEast(final Component c, final Component e) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel panel = new JPanel(new BorderLayout());
          panel.add(BorderLayout.CENTER, wrap(c));
          panel.add(BorderLayout.EAST, wrap(e));
          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 withLeftMargin_defaultWidth = 6;

  static public JPanel withLeftMargin(Component c) {
    return withLeftMargin(withLeftMargin_defaultWidth, c);
  }

  static public JPanel withLeftMargin(final int margin, final Component c) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel p = new JPanel(new BorderLayout());
          p.setBorder(BorderFactory.createEmptyBorder(0, margin, 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 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 String selectedItem(JList l) {
    return getSelectedItem(l);
  }

  static public String selectedItem(JComboBox cb) {
    return getSelectedItem(cb);
  }

  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 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 <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 <A> IterableIterator<A> iteratorFromFunction_if0(final IF0<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 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 Border jCompoundBorder(Border inner, Border outer) {
    if (inner == null)
      return outer;
    if (outer == null)
      return inner;
    return BorderFactory.createCompoundBorder(inner, outer);
  }

  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();

    public Map<Component, String> constraints = new HashMap();

    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 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++) {
        var c = components[i];
        String s = constraints.get(c);
        if (isOneOfSingleChars(s, LEFT_CHAR, RIGHT_CHAR))
          continue;
        s = str(makeAlternateIndexChar(i));
        setConstraints(c, s);
        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) {
      setConstraints(component, s);
    }

    public void setConstraints(Component component, String s) {
      mapPutOrRemove(map, s, component);
      mapPutOrRemove(constraints, component, s);
    }

    public void removeLayoutComponent(Component component) {
      map.values().remove(component);
      constraints.remove(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 boolean isOneOfSingleChars(String s, char... chars) {
    if (l(s) != 1)
      return false;
    char real = s.charAt(0);
    for (char c : unnullForIteration(chars)) if (real == c)
      return true;
    return false;
  }

  static public void dm_inQ(Runnable r) {
    dm_q().add(r);
  }

  static public void dm_inQ(DynModule mod, Runnable r) {
    dm_q(mod, 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> 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 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, B> Either<A, B> eitherA(A a) {
    return new Either(1, a);
  }

  static public <A, B> Either<A, B> eitherB(B b) {
    return new Either(2, b);
  }

  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);
  }

  static public <A, B> A eitherAOpt(Either<A, B> e) {
    return e != null && e.isA() ? e.a() : null;
  }

  static public <A, B> boolean eitherIsB(Either<A, B> e) {
    return e != null && e.isB();
  }

  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 <A, B> boolean isA(Either<A, B> e) {
    return eitherIsA(e);
  }

  static public <A, B> boolean eitherIsA(Either<A, B> e) {
    return e != null && e.isA();
  }
}