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 com.google.api.client.googleapis.auth.oauth2.GoogleIdToken;
import com.google.api.client.googleapis.auth.oauth2.GoogleIdToken.Payload;
import com.google.api.client.googleapis.auth.oauth2.GoogleIdTokenVerifier;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.http.javanet.NetHttpTransport;
import java.text.SimpleDateFormat;
import java.nio.file.Files;
import java.text.NumberFormat;
import javax.net.ssl.*;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;
import java.nio.file.Path;
import java.text.*;
import java.util.TimeZone;

public class main {

  static public boolean maintainPositionalIndex = true;

  static public class Slice extends Concept {

    public GlobalID globalID = aGlobalIDObject();

    public String caseID;

    public String name;

    public boolean indexed = true;

    public long sliceDumped;

    public Ref<User> owner = new Ref();

    public String defaultCaseID() {
      return uniqueFileNameUsingMD5_80_v2(name + " " + globalID);
    }

    public GlobalID globalID() {
      return globalID;
    }
  }

  static public class Page extends Concept {

    public long gID_1;

    public short gID_2;

    {
      setGlobalID(aGlobalIDObj());
    }

    public void setGlobalID(GlobalID id) {
      if (id == null) {
        gID_1 = gID_2 = 0;
        return;
      }
      gID_1 = globalIDPart1(id);
      gID_2 = globalIDPart2(id);
    }

    public void setGlobalID(String id) {
      setGlobalID(toGlobalIDObj(id));
    }

    public GlobalID globalID() {
      return globalIDFromParts(gID_1, gID_2);
    }

    public short flags;

    public String q;

    public void _onLoad() {
      String id = cget(this, "globalID");
      if (id != null) {
        setGlobalID(id);
        cset(this, "globalID", null);
      }
    }

    public void quickPost(String key, String value) {
      agiBlue().new GetEntriesAndPost(_concepts).go(this, litmap("key", key, "value", value));
    }

    public AGIBlue agiBlue() {
      return (AGIBlue) mapGet(_concepts.miscMap, "agiBlue");
    }

    public AGIBlue.LoadedSlice loadedSlice() {
      return (AGIBlue.LoadedSlice) mapGet(_concepts.miscMap, "loadedSlice");
    }
  }

  abstract static public class AbstractEntry extends Concept {

    public Ref<Page> page = new Ref();

    public int count;

    public String key;

    public String ip;

    public Ref<Signer> signer = new Ref();

    public String q() {
      Page p = page.get();
      return p == null ? null : page.get().q;
    }
  }

  static public class Entry extends AbstractEntry {

    public String globalID = aGlobalID();

    public String value;
  }

  static public class BlobEntry extends AbstractEntry {

    public GlobalID globalID = aGlobalIDObject();

    public long length;

    public String md5;

    public String contentType;

    public GlobalID globalID() {
      return globalID;
    }
  }

  static public class Signer extends Concept {

    public String globalID = aGlobalID();

    public String publicKey;

    public boolean trusted = false;

    public String approvedBy;
  }

  static public class User extends Concept {

    public GlobalID globalID = aGlobalIDObject();

    public long lastSeen;
  }

  static public class CookieUser extends User {

    public String cookie;

    public String toString() {
      return "[cookieUser]";
    }
  }

  static public class GoogleUser extends User {

    public long googleLogInDate;

    public String googleEmail, googleFirstName, googleLastName;

    public boolean googleEmailVerified = false;

    public String toString() {
      return googleFirstName + " " + googleLastName;
    }
  }

  static public class MinimalUser extends User {

    public String userName, encryptedPassword;

    public String toString() {
      return "[minimalUser] " + userName;
    }
  }

  static public class JustPasswordUser extends User {

    public String password;
  }

  static public class Session extends Concept {

    public String cookie;

    public String selectedSlice;

    public Page slicePage;

    public Ref<User> user = new Ref();
  }

  static public class SliceInfo extends Concept {

    public GlobalID globalID;

    public List<String> mandatoryBotVMBusIDs;

    public boolean openPosting = true;
  }

  static public class CentralIndexEntry {

    public Set<Slice> slices = synchroLinkedHashSet();
  }

  abstract static public class AGIBlue {

    public boolean asyncSearch = false;

    public boolean allowMultipleCasesInValues = true;

    public boolean showSliceSelector = true;

    public boolean showGoogleLogIn = true;

    public boolean makeAllKeysPages = true;

    public boolean makeAllValuesPages = true;

    public boolean legacy = true;

    public boolean dumpSlicesOnAnyChange = true;

    public int maxSliceNameLength = 1024;

    public int displayLength = 140;

    public int sideDisplayLength = 50;

    public int searchResultsToShow = 50;

    public String sideSearchType = "literal";

    public int maxBackgroundSlices = 1000;

    public long cloningSince, clonedSince;

    public boolean isClone = false;

    public File sliceDumpFile(Slice slice) {
      return programFile("slice-dumps/" + or2(slice.caseID, "main") + ".slice");
    }

    public File dumpSliceToFile(LoadedSlice slice) {
      return withDBLock(slice.cc, new F0<File>() {

        public File get() {
          try {
            cset(slice.sliceConcept, "sliceDumped", now());
            File file = sliceDumpFile(slice.sliceConcept);
            List<String> lines = new ArrayList();
            for (Page p : list(slice.cc, Page.class)) lines.add(quote(p.q));
            for (Entry e : list(slice.cc, Entry.class)) lines.add(sfu(tripleToList(entryToTriple(e))));
            saveLinesAsTextFile(file, lines);
            return file;
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "cset(slice.sliceConcept, sliceDumped := now());\r\n      File file = sliceDumpF...";
        }
      });
    }

    public Page pageFromQ(Concepts cc, String q) {
      return empty(q) ? null : uniqCI_sync(cc, Page.class, "q", q);
    }

    public void makeCentralIndex() {
      newCentralIndex.clear();
      long time = now();
      try {
        for (Slice slice : conceptsWhere(Slice.class, "indexed", true)) addToNewCentralIndex(slice);
      } catch (Throwable __e) {
        _handleException(__e);
      }
      centralIndex.putAll(newCentralIndex);
      removeAllKeysNotIn(centralIndex, newCentralIndex);
      newCentralIndex.clear();
      centralIndexMade = now();
      centralIndexMadeIn = now() - time;
    }

    public void addToNewCentralIndex(Slice slice) {
      for (String s : sliceDump_pageNamesIncludingKeys(sliceDumpFile(slice))) newCentralIndexGet(s).slices.add(slice);
    }

    public CentralIndexEntry centralIndexGet(String s) {
      return getOrCreate(CentralIndexEntry.class, centralIndex, s);
    }

    public CentralIndexEntry newCentralIndexGet(String s) {
      return getOrCreate(CentralIndexEntry.class, newCentralIndex, s);
    }

    public Collection<Slice> centralIndexGetSlices(String s) {
      CentralIndexEntry e = centralIndexGet(s);
      return e == null ? null : e.slices;
    }

    public void dbLog(Object... params) {
      logStructure(programFile("db.log"), ll(params));
    }

    public class LoadedSlice {

      public String caseID;

      public Concepts cc;

      public Slice sliceConcept;

      public SliceInfo sliceInfo;

      public long lastAccess = sysNow();

      public ReliableSingleThread rstDumpSlice = new ReliableSingleThread(new Runnable() {

        public void run() {
          try {
            dumpSliceToFile(LoadedSlice.this);
            rst_index.trigger();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "dumpSliceToFile(LoadedSlice.this);\r\n      rst_index.trigger(); // rebuild ind...";
        }
      });

      public boolean haltSliceDumping = false;

      public ConceptFieldIndexDesc idx_latestEntries, idx_latestCreatedPages, idx_latestChangedPages;

      public ReliableSingleThread rstMakePositionalIndex = new ReliableSingleThread(new Runnable() {

        public void run() {
          try {
            makePositionalIndex_impl();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "makePositionalIndex_impl();";
        }
      });

      public PositionalTokenIndex2 positionalIndex;

      public void makePositionalIndex_impl() {
        long _startTime_0 = sysNow();
        positionalIndex = positionalTokenIndex2_wordTok(collect("q", list(cc, Page.class)));
        done2_always("Making positional index", _startTime_0);
      }

      public LoadedSlice(String caseID, Concepts cc) {
        this.cc = cc;
        this.caseID = caseID;
        csetAll(list(cc, Page.class), "slice", null, "url", null);
        releaseEmptyFieldValuesOfAllConcepts(cc);
        indexThings();
        onConceptsChange(cc, rOnceAtATimeOnly(new Runnable() {

          public void run() {
            try {
              cset(sliceConcept, "_modified", now());
              if (!haltSliceDumping && dumpSlicesOnAnyChange && nempty(caseID)) {
                rstDumpSlice.trigger();
              }
              if (maintainPositionalIndex)
                rstMakePositionalIndex.trigger();
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "cset(sliceConcept, _modified := now())\r\n  ;\r\n        if (!haltSliceDumping &&...";
          }
        }));
        if (makeAllKeysPages && legacy)
          for (Entry e : list(cc, Entry.class)) pageFromQ(e.key);
        if (makeAllValuesPages && legacy)
          for (Entry e : list(cc, Entry.class)) pageFromQ(e.value);
      }

      public void initialSetup(GlobalID globalID) {
        sliceInfo = uniq(cc, SliceInfo.class);
        cset(sliceInfo, "globalID", globalID);
      }

      public SliceInfo sliceInfo() {
        return sliceInfo;
      }

      public Page pageFromQ(String q) {
        return AGIBlue.this.pageFromQ(cc, q);
      }

      public void indexThings() {
        indexConceptFieldsCI(cc, Page.class, "q", Entry.class, "key", Entry.class, "value");
        indexConceptFields(cc, Signer.class, "publicKey");
        indexConceptFields(cc, Session.class, "cookie");
        indexSingletonConcept(cc, SliceInfo.class);
        idx_latestCreatedPages = new ConceptFieldIndexDesc(cc, Page.class, "created");
        idx_latestChangedPages = new ConceptFieldIndexDesc(cc, Page.class, "_modified");
        idx_latestEntries = new ConceptFieldIndexDesc(cc, Entry.class, "created");
        if (maintainPositionalIndex)
          rstMakePositionalIndex.trigger();
      }

      public boolean isMainSlice() {
        return empty(caseID);
      }

      public GlobalID globalID() {
        return sliceConcept.globalID;
      }

      public String name() {
        return sliceConcept.name;
      }
    }

    public ConceptsLoadedOnDemand fan;

    public ConceptsLoadedOnDemand backgroundFan;

    public Map<String, LoadedSlice> loadedSlices = syncMap();

    public Map<String, LoadedSlice> backgroundSlices = syncMap();

    public Map<String, CentralIndexEntry> centralIndex = ciMap();

    public Map<String, CentralIndexEntry> newCentralIndex = ciMap();

    public long centralIndexMade;

    public long centralIndexMadeIn;

    public ReliableSingleThread rst_index = new ReliableSingleThread(new Runnable() {

      public void run() {
        try {
          makeCentralIndex();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "makeCentralIndex();";
      }
    });

    public ConceptFieldIndexDesc idx_slicesByModification, idx_usersBySeen;

    public ConceptFieldIndexCI idx_slicesByName, idx_usersByName;

    public class GetEntriesAndPost {

      public Concepts cc;

      public List<Entry> entries;

      public Entry entry;

      public boolean newEntry = false;

      public Signer signer;

      public Session session;

      public GetEntriesAndPost(Concepts cc, Session session) {
        this.session = session;
        this.cc = cc;
      }

      public GetEntriesAndPost(Concepts cc) {
        this.cc = cc;
      }

      public GetEntriesAndPost go(Page page, Map<String, String> params) {
        String key = trim(params.get("key")), value = trim(params.get("value"));
        print("GetEntriesAndPost: " + quote(page.q) + ", " + quote(key) + " := " + quote(value));
        {
          withDBLock(new Runnable() {

            public void run() {
              try {
                entries = findBackRefs(page, Entry.class);
                if (nempty(key) && nempty(value)) {
                  Slice slice = page.loadedSlice().sliceConcept;
                  SliceInfo sliceInfo = page.loadedSlice().sliceInfo();
                  if (!sliceInfo.openPosting && session != null && session.user.get() != slice.owner.get())
                    throw fail("Not owner of slice");
                  String ip = subBot_clientIP();
                  entry = firstThat(e -> eqic(e.key, key) && eq_icIf(!allowMultipleCasesInValues, e.value, value) && eq(e.ip, ip), entries);
                  if (entry == null) {
                    print("SAVING");
                    Entry e = cnew(cc, Entry.class, "page", page, "key", key, "value", value, "ip", ip, "count", l(entries) + 1, "signer", signer);
                    if (makeAllKeysPages)
                      pageFromQ(cc, key);
                    if (makeAllValuesPages)
                      pageFromQ(cc, value);
                    page.change();
                    entry = e;
                    newEntry = true;
                    entries.add(entry);
                    dbLog("New entry", "page", page.q, "globalID", e.globalID, "count", e.count, "key", key, "value", value);
                  }
                }
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "entries = findBackRefs(page, Entry);\r\n        if (nempty(key) && nempty(value...";
            }
          });
        }
        sortByFieldInPlace("created", entries);
        numberEntriesInConceptField("count", entries);
        return this;
      }
    }

    public T3<String, String, String> entryToTriple(Entry e) {
      return e == null ? null : t3(e.page.get().q, e.key, e.value);
    }
  }

  static public Map<String, String> searchTypeToText = litmap("leven", "Leven", "literal", "Literal", "scored", "Scored");

  static public int sourceCodeLines;

  static public RealAGIBlue agiBlue;

  static public Renderer renderer = new Renderer1();

  static public String classesToShare = "\r\n  DynamicObject Concept Concepts Page Entry Slice LoadedSlice\r\n  IConceptIndex IFieldIndex IConceptCounter ConceptFieldIndexCI ConceptFieldIndexDesc\r\n  AbstractEntry Signer Session User GoogleUser MinimalUser CookieUser\r\n  BlobEntry\r\n  SliceInfo CentralIndexEntry AGIBlue RealAGIBlue TimedCache\r\n  GlobalID Renderer\r\n  IterableIterator CloseableIterableIterator\r\n";

  public static void main(final String[] args) throws Exception {
    agiBlue = new RealAGIBlue();
  }

  static public void _onLoad_sourceCodeLines() {
    sourceCodeLines = countLines(mySource());
  }

  static public void cleanMeUp() {
    cleanUp(agiBlue);
    agiBlue = null;
  }

  static public interface Renderer {

    public Object html(String uri, Map<String, String> params);
  }

  static public Object html(String uri, final Map<String, String> params) {
    try {
      printWithTime("Starting request");
      Object o = renderer.html(uri, params);
      printWithTime("Done with request");
      return o;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public class RealAGIBlue extends AGIBlue {

    volatile public boolean started, broken;

    public TimedCache<Long> sizeOnDisk = new TimedCache(60.0, "guessClusteredSizeOfProgramDirWithoutBackups");

    public RealAGIBlue() {
      try {
        if (bootstrapDataFrom("#1023558"))
          deleteMyBackups();
        thinMyBackups();
        fan = slicesLoadedOnDemand(loadedSlices);
        mainConcepts = fan.get("", null);
        indexConceptFields(Slice.class, "globalID", Slice.class, "caseID");
        indexConceptField(CookieUser.class, "cookie");
        idx_slicesByName = new ConceptFieldIndexCI(Slice.class, "name");
        idx_slicesByModification = new ConceptFieldIndexDesc(Slice.class, "_modified");
        idx_usersByName = new ConceptFieldIndexCI(GoogleUser.class, "googleLastName");
        idx_usersBySeen = new ConceptFieldIndexDesc(User.class, "lastSeen");
        cset(uniq_returnIfNew(Slice.class, "caseID", ""), "name", "main slice");
        loadedSlices.get("").initialSetup(toGlobalIDObj(mainSliceGlobalID()));
        loadedSlices.get("").sliceConcept = sliceConceptForCaseID("");
        backgroundFan = slicesLoadedOnDemand(backgroundSlices);
        backgroundFan.lock = fan.lock;
        PKIKeyPair machineKey = agiBot_trustedKeyForMachine();
        if (machineKey != null) {
          print("Approving this machine's key: " + machineKey.publicKey);
          cset(uniq_sync(Signer.class, "publicKey", machineKey.publicKey), "trusted", true, "approvedBy", "local");
        }
        rst_index.trigger();
      } catch (Throwable e) {
        _handleException(e);
        broken = true;
      } finally {
        started = true;
      }
      sizeOnDisk.keepValueWhileCalculating = true;
      doEveryAndNow(60.0, rWatcher(() -> db_mainConceptsChangeCount(), new Runnable() {

        public void run() {
          try {
            sizeOnDisk.get();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "sizeOnDisk.get()";
        }
      }));
    }

    public List<Entry> entriesOnPage(Page p) {
      return p == null ? null : sortedByField("count", findBackRefs(p, Entry.class));
    }

    public List<Page> pagesSortedByLength(List<Page> l) {
      return sortedByCalculatedField(l, p -> l(p.q));
    }

    static public boolean agiBlue_isOriginal() {
      return amProgram("#1023558");
    }

    public String agiBlueURL(String subUri) {
      return agiBlueURL() + prependSlash(subUri);
    }

    public String agiBlueURL() {
      return agiBlue_isOriginal() ? "https://agi.blue" : "/" + psI(programID()) + "/raw";
    }

    public String agiBlueName() {
      return agiBlue_isOriginal() ? "agi.blue" : isProgramID("#1024512") ? "agi.blue productive" : "agi.blue clone " + programID();
    }

    public void cleanMeUp() {
      cleanUp(fan);
    }

    public LoadedSlice loadSlice(Slice slice) {
      return loadSlice(slice.caseID, str(slice.globalID));
    }

    public LoadedSlice loadSlice(String caseID, String globalID) {
      caseID = unnull(caseID);
      Lock __8 = fan.lock;
      lock(__8);
      try {
        Concepts cc = backgroundFan.getIfLoaded(caseID);
        if (cc != null) {
          LoadedSlice slice = assertNotNull(backgroundSlices.get(caseID));
          backgroundFan.loaded.remove(caseID);
          fan.loaded.put(caseID, cc);
          backgroundSlices.remove(caseID);
          loadedSlices.put(caseID, slice);
          return slice;
        }
        fan.get(caseID, globalID);
        return loadedSlices.get(caseID);
      } finally {
        unlock(__8);
      }
    }

    public void unloadSlice(String caseID) {
      fan.unloadCase(caseID);
      backgroundFan.unloadCase(caseID);
    }

    public LoadedSlice loadBackgroundSlice(Slice slice) {
      return loadBackgroundSlice(slice.caseID, str(slice.globalID));
    }

    public LoadedSlice loadBackgroundSlice(String caseID, String globalID) {
      caseID = unnull(caseID);
      Lock __9 = fan.lock;
      lock(__9);
      try {
        if (fan.getIfLoaded(caseID) != null)
          return loadedSlices.get(caseID);
        backgroundFan.get(caseID, globalID);
        LoadedSlice slice = assertNotNull(backgroundSlices.get(caseID));
        slice.lastAccess = sysNow();
        while (l(backgroundSlices) > maxBackgroundSlices) unloadLeastRecentlyAccessedBackgroundSlice();
        assertNotNull("slice.sliceConcept", slice.sliceConcept);
        return slice;
      } finally {
        unlock(__9);
      }
    }

    public void unloadLeastRecentlyAccessedBackgroundSlice() {
      Lock __10 = fan.lock;
      lock(__10);
      try {
        String caseID = lowestByField("lastAccess", keys(backgroundSlices));
        if (caseID != null)
          backgroundFan.unloadCase(caseID);
      } finally {
        unlock(__10);
      }
    }

    public Slice sliceConceptForGlobalID(String globalID) {
      return sliceConceptForGlobalID(toGlobalIDObj(globalID));
    }

    public Slice sliceConceptForGlobalID(GlobalID globalID) {
      return conceptWhere(Slice.class, "globalID", globalID);
    }

    public Slice sliceConceptForCaseID(String caseID) {
      return conceptWhere(Slice.class, "caseID", caseID);
    }

    public Slice sliceForName(String name) {
      return conceptWhereCI(Slice.class, "name", name);
    }

    public class Query extends WorksOnSlice {

      public Map<String, String> vars = ciMap();

      public Query(LoadedSlice slice) {
        super(slice);
      }

      public Object process(String query) {
        {
          Object __12 = processLines(agiBlue_parseQueryScript(query));
          if (__12 != null)
            return __12;
        }
        return serveJSON("No return statement");
      }

      public Object processLines(List<ALQLLine> lines) {
        for (ALQLLine line : lines) {
          if (line instanceof ALQLSlice) {
            Slice slice = sliceForName(((ALQLSlice) line).slice);
            if (slice == null)
              return serveJSON("Slice not found: " + ((ALQLSlice) line).slice);
            LoadedSlice oldSlice = Query.this.slice;
            try {
              setSlice(loadSlice(slice));
              {
                Object __13 = processLines(((ALQLSlice) line).contents);
                if (__13 != null)
                  return __13;
              }
            } finally {
              setSlice(oldSlice);
            }
          } else if (line instanceof ALQLReturn)
            return serveJSON(ll(getOrKeep(vars, ((ALQLReturn) line).var)));
          else if (line instanceof ALQLReturnTuple)
            return serveJSON(map(v -> getOrKeep(vars, v), ((ALQLReturnTuple) line).vars));
          else if (line instanceof ALQLTriple) {
            T3<String, String, String> t = ((ALQLTriple) line).triple;
            t = tripleMap(t, s -> getOrKeep(vars, s));
            Collection<Page> pages;
            String var;
            if (isDollarVar(t.c)) {
              var = t.c;
              if (isDollarVar(t.a)) {
                if (isDollarVar(t.b))
                  throw todo(t);
                Entry e = random(conceptsWhereCI(cc, Entry.class, "key", t.b));
                if (e == null)
                  return serveJSON("No results for " + var);
                pages = pagesForKeyAndValue(t.b, t.c);
                vars.put(t.a, e.page.get().q);
                vars.put(t.c, e.value);
                continue;
              } else if (isDollarVar(t.b)) {
                Page page = findPageFromQ(t.a);
                Entry e = random(findBackRefs(page, Entry.class));
                if (e == null)
                  return serveJSON("No results for " + var);
                vars.put(t.b, e.key);
                vars.put(t.c, e.value);
                continue;
              } else {
                String val = getValue(t.a, t.b);
                if (val == null)
                  return serveJSON("No results for " + var);
                pages = ll(pageFromQ(val));
              }
            } else if (isDollarVar(t.b)) {
              var = t.b;
              if (isDollarVar(t.c))
                throw todo(t);
              if (isDollarVar(t.a)) {
                List<Entry> entries = conceptsWhereCI(cc, Entry.class, "value", t.c);
                if (empty(entries))
                  return serveJSON("No results for " + var);
                Entry e = random(entries);
                vars.put(t.a, e.page.get().q);
                vars.put(t.b, e.key);
                continue;
              } else {
                Collection<String> keys = keysForPageAndValue(t.a, t.c);
                if (empty(keys))
                  return serveJSON("No results for " + var);
                pages = map(new F1<String, Page>() {

                  public Page get(String x) {
                    try {
                      return pageFromQ(x);
                    } catch (Exception __e) {
                      throw rethrow(__e);
                    }
                  }

                  public String toString() {
                    return "pageFromQ(x)";
                  }
                }, keys);
              }
            } else {
              var = t.a;
              if (!isDollarVar(t.a))
                throw todo(t);
              if (isDollarVar(t.b))
                throw todo(t);
              if (isDollarVar(t.c))
                throw todo(t);
              pages = pagesForKeyAndValue(t.b, t.c);
            }
            if (empty(pages))
              return serveJSON("No results for " + var);
            vars.put(var, random(pages).q);
          } else if (line instanceof ALQLPage) {
            if (eq(((ALQLPage) line).matchMethod, "eqic"))
              findPageFromQ(((ALQLPage) line).page);
            else if (eq(((ALQLPage) line).matchMethod, "flexMatchDollarVarsIC_first")) {
              List<Map<String, String>> l = new ArrayList();
              for (Page p : list(cc, Page.class)) addIfNotNull(l, flexMatchDollarVarsIC_first(((ALQLPage) line).page, p.q));
              if (empty(l))
                return serveJSON("No results for " + curly(((ALQLPage) line).page));
              vars.putAll(random(l));
            } else
              throw fail("Unknown match method: " + ((ALQLPage) line).matchMethod);
          } else
            throw fail("Can't interpret: " + line);
        }
        return null;
      }
    }

    public String agiBlue_pageURLWithSlice(Page p) {
      return p == null ? null : agiBlueURL() + hquery("slice", _get(sliceForPage(p), "globalID"), "q", p.q);
    }

    public Slice sliceForPage(Page p) {
      if (p == null)
        return null;
      SliceInfo info = conceptWhere(p._concepts, SliceInfo.class);
      return info == null ? null : sliceConceptForGlobalID(info.globalID);
    }

    public GlobalID mainSliceGlobalID() {
      return conceptWhere(Slice.class, "caseID", "").globalID;
    }

    public ConceptsLoadedOnDemand slicesLoadedOnDemand(Map<String, LoadedSlice> loadedSlices) {
      ConceptsLoadedOnDemand fan = new ConceptsLoadedOnDemand();
      fan.onCaseLoaded(new VF3<String, Object, Concepts>() {

        public void get(String caseID, Object globalID, Concepts concepts) {
          try {
            LoadedSlice ls = new LoadedSlice(caseID, concepts);
            concepts.miscMap = mapPutOrCreate_multi(concepts.miscMap, "agiBlue", RealAGIBlue.this, "loadedSlice", ls);
            ls.sliceConcept = sliceConceptForCaseID(caseID);
            if (nempty(globalID))
              ls.initialSetup(toGlobalIDObj((String) globalID));
            loadedSlices.put(caseID, ls);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "LoadedSlice ls = new(caseID, concepts);\r\n      concepts.miscMap = mapPutOrCre...";
        }
      });
      fan.onUnloadingCase(new VF2<String, Concepts>() {

        public void get(String caseID, Concepts concepts) {
          try {
            loadedSlices.remove(caseID);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "loadedSlices.remove(caseID);";
        }
      });
      return fan;
    }

    public String checkDoubleLoads() {
      List<String> l = sharedKeys(loadedSlices, backgroundSlices);
      return empty(l) ? null : "ERROR: Slice loaded in background and foreground: " + first(l);
    }

    public long estimatedSliceDataSize(Slice slice) {
      return estimatedSliceDataSize(slice.caseID);
    }

    public long estimatedSliceDataSize(String caseID) {
      return l(conceptsFile(fan.dbID(caseID)));
    }

    public void softRestart() {
      print("Cloning...");
      cloningSince = sysNow();
      Class c = hotwireDependent(programID());
      copyFields(mc(), c, "agiBlue", "mainConcepts", "creator_class");
      renderer = (Renderer) get("renderer", c);
      print("Got new renderer.");
    }
  }

  static public class WorksOnSlice {

    public Concepts cc;

    public AGIBlue.LoadedSlice slice;

    public WorksOnSlice() {
    }

    public WorksOnSlice(AGIBlue.LoadedSlice slice) {
      this.slice = slice;
      cc = slice.cc;
    }

    public void setSlice(AGIBlue.LoadedSlice slice) {
      this.slice = slice;
      cc = slice.cc;
    }

    public Page findPageFromParams(Map map) {
      String q = getString("q", map);
      return empty(q) ? null : findPageFromQ(q);
    }

    public Page findOrMakePageFromParams(Map map) {
      return pageFromQ(getString("q", map));
    }

    public Page findPageFromQ(String q) {
      return conceptWhereCI(cc, Page.class, "q", q);
    }

    public Page pageFromQ(String q) {
      return slice.pageFromQ(q);
    }

    public Set<Page> pagesForKeyAndValue(String key, String value) {
      List<Entry> entries = conceptsWhereIC(cc, Entry.class, "value", value, "key", key);
      return asSet(ccollect("page", entries));
    }

    public Set<Page> pagesWithKey(String key) {
      List<Entry> entries = conceptsWhereIC(cc, Entry.class, "key", key);
      return asSet(ccollect("page", entries));
    }

    public Collection<String> keysForPageAndValue(String q, String value) {
      Page page = findPageFromQ(q);
      if (page == null)
        return null;
      return collect("key", conceptsWhereIC(cc, Entry.class, "page", page, "value", value));
    }

    public boolean hasPage(String q) {
      return hasConceptWhereIC(Page.class, "q", q);
    }

    public String getValue(Page page, String key) {
      return page == null || empty(key) ? null : getString("value", highestByField("count", objectsWhereIC(findBackRefs(page, Entry.class), "key", key)));
    }

    public String getValue(String page, String key) {
      return getValue(findPageFromQ(page), key);
    }

    public String pageDisplayName(Page page) {
      return page.q;
    }

    public String renderThing(String s, boolean forceURLDisplay) {
      return forceURLDisplay || isURL(s) || isAGIDomain(s) ? ahref(fixAGILink(absoluteURL(s)), htmlencode2(shorten(agiBlue.displayLength, s))) : ahref(agiBlue_linkForPhrase(s, "slice", slice.isMainSlice() ? null : slice.sliceConcept.globalID), htmlencode2(shorten(agiBlue.displayLength, s)));
    }

    public GlobalID sliceID() {
      return slice.globalID();
    }

    public SliceInfo sliceInfo() {
      return slice.sliceInfo;
    }
  }

  static public class Renderer1 implements Renderer {

    public Object html(String uri, Map<String, String> params) {
      sleepWhile(() -> !agiBlue.started);
      if (agiBlue.broken)
        return subBot_serve500("Internal error");
      return new Request().serve(uri, params);
    }

    public class Request extends WorksOnSlice {

      public String cookie;

      public Session session;

      public Slice sliceConcept;

      public String uri;

      public Map<String, String> params;

      public long started = sysNow();

      public String q, domain;

      public Set<String> get;

      public List<Entry> usesAsKey;

      public boolean isHomeDomain() {
        String domain = domain();
        return eqic(domain, "www.agi.blue") || !ewic(domain, ".agi.blue");
      }

      public Object serve(String uri, Map<String, String> params) {
        this.uri = dropMultipleSlashes(uri);
        this.params = params;
        Matches m = new Matches();
        print(uri + " ? " + unnull(subBot_query()));
        cookie = cookieFromUser();
        if (cookie != null) {
          session = uniq_sync(Session.class, "cookie", cookie);
          if (session.user.get() == null)
            cset(session, "user", uniq_sync(CookieUser.class, "cookie", cookie));
        } else
          session = unlistedWithValues(Session.class);
        String selectSlice = params.get("slice");
        if (isGlobalID(selectSlice))
          cset(session, "selectedSlice", selectSlice);
        if (session.selectedSlice == null)
          cset(session, "selectedSlice", str(agiBlue.mainSliceGlobalID()));
        String caseID = "";
        sliceConcept = agiBlue.sliceConceptForGlobalID(session.selectedSlice);
        print("Selected slice: " + session.selectedSlice + ", obj? " + (sliceConcept != null));
        if (sliceConcept != null)
          caseID = sliceConcept.caseID;
        print("caseID: " + caseID);
        slice = assertNotNull(agiBlue.loadSlice(caseID, session.selectedSlice));
        cc = slice.cc;
        if (swic(uri, "/bot/"))
          return serveBot();
        if (swic(uri, "/user/", m)) {
          User user = conceptWhere(User.class, "globalID", toGlobalIDObj(assertGlobalID(m.rest())));
          if (user == null)
            return subBot_serve404("User not found");
          String title = "User " + user;
          return hhtml_miniPage(title, h3(agiBlueNameHTML() + " | " + title) + "User type: " + classShortName(user));
        }
        String uri2 = dropTrailingSlash(uri);
        if (eqic(uri2, "/google-verify")) {
          print("Google-verify started.");
          Payload payload = printStruct(googleVerifyUserToken2(googleSignInID(), params.get("token")));
          if (payload == null)
            return print("google-verify", "No");
          String email = payload.getEmail();
          if (empty(email))
            return print("google-verify", "No");
          GoogleUser user = uniqCI_sync(GoogleUser.class, "googleEmail", email);
          cset(user, "googleEmailVerified", payload.getEmailVerified(), "googleFirstName", strOrNull(payload.get("given_name")), "googleLastName", strOrNull(payload.get("family_name")));
          cset(session, "user", user);
          return print("google-verify", payload.getEmail() + " " + (payload.getEmailVerified() ? "(verified)" : "(not verified)"));
        }
        cset(session.user.get(), "lastSeen", now());
        if (nempty(params.get("searchAction")))
          return serveSearchAction();
        if (eqic(uri2, "/users"))
          return serveUsersList();
        if (eqic(uri2, "/slices"))
          return serveSlicesList();
        if (eqic(uri2, "/classes"))
          return serveClasses();
        if (eqic(uri2, "/search"))
          return serveScoredSearch();
        if (eqic(uri2, "/literalSearch"))
          return serveLiteralSearch();
        if (eqic(uri2, "/levenSearch"))
          return serveLevenSearch();
        if (eqic(uri2, "/query"))
          return serveQueryPage();
        if (eqic(uri2, "/createSlice"))
          return serveCreateSlicePage();
        if (eqic(uri2, "/deletePage"))
          return serveDeletePage();
        if (eqic(uri2, "/deleteSlice"))
          return serveDeleteSlice();
        if (eqic(uri2, "/checkboxes"))
          return serveCheckboxes();
        if (eqic(uri2, "/multiAdd"))
          return serveMultiAdd();
        if (eqic(uri2, "/version"))
          return myTranspilationDate();
        if (eqic(uri2, "/restart") && authed()) {
          agiBlue.softRestart();
          return "OK";
        }
        q = params.get("q");
        get = asCISet(nempties(subBot_paramsAsMultiMap().get("get")));
        domain = or2(params.get("domain"), domain());
        String raw = firstKeyWithValue("", params);
        if (nempty(raw) && empty(q))
          q = raw;
        String url = domain + dropTrailingSlash(uri);
        if (empty(q)) {
          String qq = agiBlue_urlToQuery(url);
          if (neqic(qq, "agi.blue"))
            q = qq;
        }
        Page page;
        boolean newPage = false;
        Pair<Page, Boolean> __17 = uniqCI2_sync(cc, Page.class, "q", q);
        page = __17.a;
        newPage = __17.b;
        if (newPage)
          agiBlue.dbLog("New page", "q", q);
        if (empty(params.get("q")) && empty(raw) && isHomeDomain()) {
          List<Page> pages = cloneList(slice.idx_latestChangedPages.objectIterator());
          int start = parseInt(params.get("start")), step = 100;
          String nav = pageNav2("/", l(pages), start, step, "start");
          String content = hform(b("GIVE ME INPUT: &nbsp; ") + htextinput("q", "autofocus", true) + " " + hsubmit("Search", "name", "searchAction") + " " + hsubmit("Add to slice")) + h1(sliceAsHTML() + " has " + nPages(countConcepts(cc, Page.class)) + " and " + nConnections(countConcepts(cc, Entry.class))) + p(nav) + p_nemptyLines(map(pageToHTMLLink(), subList(pages, start, start + step)));
          return hhtml_agiBlue(hhead_title("Slice " + sliceConcept().name + " | agi.blue") + hbody(hfullcenterAndTopLeft(top() + content + footer(), sliceSelector())));
        }
        String key = trim(params.get("key")), value = trim(params.get("value"));
        List<Entry> entries = agiBlue.new GetEntriesAndPost(cc).go(page, params).entries;
        if (nempty(get))
          return serveJSON(collect("value", llNotNulls(firstThat(entries, e -> get.contains(e.key)))));
        String key2 = key, value2 = value;
        if (nempty(key) && nempty(value))
          key2 = value2 = "";
        boolean withHidden = eq(params.get("withHidden"), "1");
        Set<Integer> hide = new HashSet();
        if (!withHidden)
          for (Entry e : entries) if (eqic(e.key, "hide") && isSquareBracketedInt(e.value))
            addAll(hide, e.count, parseInt(unSquareBracket(e.value)));
        MultiMap<Integer, String> mmMeta = new MultiMap();
        for (Entry e : entries) if (isSquareBracketedInt(e.key))
          mmMeta.put(parseInt(unSquareBracket(e.key)), e.value);
        MultiMap<String, String> mm = new MultiMap();
        for (Entry e : entries) mm.put(e.key, e.value);
        String name = page.q;
        List<Entry> refs = concatLists(conceptsWhereIC(cc, Entry.class, "value", name), conceptsWhereIC(cc, Entry.class, "key", name));
        Set<Page> refPages = asSet(ccollect("page", refs));
        refPages.remove(page);
        List<Page> searchResults;
        int totalResults = 0, searchResultsToShow = 50;
        if (eq(agiBlue.sideSearchType, "leven"))
          searchResults = levenSearch(page.q, "max", searchResultsToShow);
        else if (eq(agiBlue.sideSearchType, "literal")) {
          searchResults = literalSearch(page.q, "max", maxInt());
          print("totalResults", totalResults = l(searchResults));
          searchResults = takeFirst(searchResultsToShow, searchResults);
        } else
          searchResults = (List<Page>) dm_call("agiBlueSearch", "search", page.q, "maxResult", clipIntPlus(searchResultsToShow, 1), "agiBlueBotID", programID(), "cc", cc);
        searchResults.remove(page);
        usesAsKey = conceptsWhereIC(cc, Entry.class, "key", page.q);
        CentralIndexEntry cie = agiBlue.centralIndex.get(page.q);
        List<Slice> pageInOtherSlices = cie == null ? null : listMinus(cie.slices, slice.sliceConcept);
        String pageName_html = htmlEncode2(shorten(agiBlue.displayLength, name));
        String mainContents = top() + h1(ahref_unstyled(agiBlue.agiBlue_pageURLWithSlice(page), pageName_html) + (!isURL(page.q) ? "" : " " + targetBlank(page.q, hsnippetimg("#1101876"))) + (newPage ? " [huh????]" : "")) + p_nemptyLines(map(entries, new F1<Entry, String>() {

          public String get(Entry e) {
            try {
              return !withHidden && (hide.contains(e.count) || eqic(e.key, "read as") && eqic(e.value, name)) ? "" : "[" + e.count + "] " + renderThing(e.key, false) + ": " + b(renderThing(e.value, cic(mmMeta.get(e.count), "is a URL")));
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "!withHidden && (hide.contains(e.count) || eqic(e.key, \"read as\") && eqic(e.va...";
          }
        })) + hpostform(h3("Add an entry") + "Key: " + hinputfield("key", key2) + " Value: " + hinputfield("value", value2) + "<br><br>" + hsubmit("Add")) + p(ahref(agiBlue.agiBlueURL() + "/literalSearch" + hquery("q", page.q), "[literal search]", "title", "Search pages with a name containing this page's name literally") + " " + ahref(agiBlue.agiBlueURL() + "/levenSearch" + hquery("q", page.q), "[leven search 1]", "title", "Search pages with a Levenshtein similarity of 1 containing this page's name literally") + " " + ahref(agiBlue.agiBlueURL() + "/search" + hquery("q", page.q), "[scored search]", "title", "Search pages with ScoredSearch") + " " + ahref(agiBlue.agiBlueURL() + "/deletePage" + hquery("slice", sliceID(), "q", page.q), "[delete page]")) + (empty(usesAsKey) ? "" : h3(quote(pageName_html) + " as key") + p_nemptyLines_showFirst(50, map(usesAsKey, e -> pageToHTMLLink().get(e.page.get()) + unicode_spacedRightPointingTriangle() + pageName_html + unicode_spacedRightPointingTriangle() + pageToHTMLLink().get(pageFromQ(e.value))))) + (empty(pageInOtherSlices) ? "" : h3(quote(pageName_html) + " in other slices") + p_nemptyLines_showFirst(50, map(slice -> ahref(agiBlue.agiBlueURL() + hquery("slice", slice.globalID, "q", page.q), htmlEncode2(slice.name)), pageInOtherSlices)));
        String sideContents = hform(b("GIVE ME INPUT:") + " " + htextinput("q") + " " + hsubmit("Ask", "onclick", "document.getElementById('newInputForm').target = '';") + " " + hsubmit("+Tab", "title", "Ask and show result in a new tab", "onclick", "document.getElementById('newInputForm').target = '_blank';"), "id", "newInputForm") + h3("References (" + l(refPages) + ")") + p_nemptyLines_showFirst(10, map(pageToHTMLLink("displayLength", agiBlue.sideDisplayLength), refPages)) + h3(searchTypeToText.get(agiBlue.sideSearchType) + " search results (" + (l(searchResults) >= searchResultsToShow ? searchResultsToShow + "+" : str(l(searchResults))) + (totalResults > l(searchResults) ? " of " + n2(totalResults) : "") + ")") + p_nemptyLines_showFirst(searchResultsToShow, map(pageToHTMLLink("displayLength", agiBlue.sideDisplayLength), searchResults)) + hdiv("", "id", "extraStuff");
        if (agiBlue.asyncSearch)
          doLater(6.0, new Runnable() {

            public void run() {
              try {
                dm_call("agiBlueSearch", "searchAndPost", page.q, "agiBlueBotID", programID(), "cc", cc);
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "dm_call(\"agiBlueSearch\", \"searchAndPost\", page.q, agiBlueBotID := programID()...";
            }
          });
        vmBus_send("agiBlue_servingConceptPage", this, page);
        String iframe = params.get("render_iframe");
        return hhtml_agiBlue(hhead_title(pageDisplayName(page)) + hbody(tag("table", tr(td(sliceSelector(), "valign", "top") + td(sideContents, "align", "right", "valign", "top", "rowspan", 2)) + tr(td(mainContents + (empty(iframe) ? "" : iframe(iframe, "width", 600, "height", 400)) + footer(), "align", "center", "valign", "top")), "width", "100%", "height", "100%")));
      }

      public Object servePagesToBot(Iterable<Page> pages) {
        return serveListToBot(map(pageToMap(wrapMapAsParams(params)), pages));
      }

      public Object serveListToBot(Collection l) {
        if (nempty(params.get("max")))
          l = takeFirst(parseInt(params.get("max")), l);
        return serveJSON(l);
      }

      public Object serveBot() {
        String q = params.get("q");
        if (eqic(uri, "/bot/hello"))
          return serveJSON("hello");
        if (eqic(uri, "/bot/hasPage"))
          return serveJSON(hasPage(q));
        if (eqic(uri, "/bot/randomPageContaining")) {
          assertNempty(q);
          return servePageToBot(random(filter(list(cc, Page.class), p -> cic(p.q, q))), params);
        }
        if (eqic(uri, "/bot/allPages"))
          return servePagesToBot(list(cc, Page.class));
        if (eqic(uri, "/bot/allPagesStartingWith")) {
          assertNempty(q);
          return servePagesToBot(filter(list(cc, Page.class), p -> swic(p.q, q)));
        }
        if (eqic(uri, "/bot/allPagesEndingWith")) {
          assertNempty(q);
          return servePagesToBot(filter(list(cc, Page.class), p -> ewic(p.q, q)));
        }
        if (eqic(uri, "/bot/allPagesContaining")) {
          assertNempty(q);
          return servePagesToBot(filter(list(cc, Page.class), p -> cic(p.q, q)));
        }
        if (eqic(uri, "/bot/allPagesContainingRegexp")) {
          assertNempty(q);
          Pattern pat = regexpIC(q);
          return servePagesToBot(filter(list(cc, Page.class), p -> regexpFindIC(pat, p.q)));
        }
        if (eqicOneOf(uri, "/bot/postSigned", "/bot/approveTrustRequest")) {
          String text = rtrim(params.get("text"));
          String key = getSignerKey(text);
          if (empty(key))
            return subBot_serve500("Please include your public key");
          if (!isSignedWithKey(text, key))
            return subBot_serve500("Signature didn't verify");
          text = dropLastTwoLines(text);
          Signer signer = uniq_sync(Signer.class, "publicKey", key);
          if (eqic(uri, "/bot/postSigned")) {
            List out = new ArrayList();
            for (String line : tlft(text)) {
              Map<String, String> map = jsonDecodeMap(line);
              AGIBlue.GetEntriesAndPost x = agiBlue.new GetEntriesAndPost(cc);
              x.signer = signer;
              Page page = findOrMakePageFromParams(map);
              if (page == null) {
                out.add("Invalid page reference");
                continue;
              }
              x.go(page, map);
              out.add(x.newEntry ? "Saved" : x.entry != null ? "Entry exists" : "Need key and value");
            }
            return serveJSON(out);
          }
          if (eqic(uri, "/bot/approveTrustRequest")) {
            if (!signer.trusted)
              return subBot_serve500("Untrusted signer");
            Signer toApprove = conceptWhere(Signer.class, "publicKey", trim(text));
            if (toApprove == null)
              return subBot_serve500("Signer to approve not found");
            cset(toApprove, "trusted", true, "approvedBy", signer.globalID);
            return serveJSON("Approved: " + trim(text));
          }
          return subBot_serve500("CONFUSION");
        }
        if (eqic(uri, "/bot/post")) {
          AGIBlue.GetEntriesAndPost x = agiBlue.new GetEntriesAndPost(cc);
          x.go(pageFromQ(q), params);
          return serveJSON(x.newEntry ? "Saved" : x.entry != null ? "Entry exists" : "Need key and value");
        }
        if (eqic(uri, "/bot/entriesOnPage"))
          return serveJSON(map(agiBlue.entriesOnPage(findPageFromParams(params)), entryToMap(false)));
        if (eqic(uri, "/bot/entriesForKey"))
          return serveJSON(map(conceptsWhereIC(cc, Entry.class, "key", params.get("key")), entryToMap(true)));
        if (eqic(uri, "/bot/lookup")) {
          String key = params.get("key");
          if (empty(key))
            return serveJSON("Need key");
          String value = getValue(findPageFromParams(params), key);
          return serveJSON(empty(value) ? "" : litmap("value", value));
        }
        if (eqic(uri, "/bot/multiLookup")) {
          String key = params.get("key");
          if (empty(key))
            return serveJSON("Need key");
          return serveJSON(collect("value", objectsWhereIC(findBackRefs(findPageFromParams(params), Entry.class), "key", key)));
        }
        if (eqic(uri, "/bot/lookupMultipleKeys")) {
          Set<String> keys = asCISet(subBot_paramsAsMultiMap().get("key"));
          List<Entry> entries = findBackRefs(findPageFromParams(params), Entry.class);
          return serveJSON(map(entryToMap(false), filter(entries, e -> contains(keys, e.key))));
        }
        if (eqic(uri, "/bot/multiLookupInAllSlices")) {
          String key = params.get("key");
          if (empty(key))
            return serveJSON("Need key");
          Collection<Slice> slices = agiBlue.centralIndexGetSlices(key);
          List<Map> results = new ArrayList();
          for (Slice s : unnull(slices)) {
            WorksOnSlice wos = new WorksOnSlice(agiBlue.loadBackgroundSlice(s));
            Page page = wos.findPageFromParams(params);
            if (page != null)
              for (Entry e : unnull(objectsWhereIC(findBackRefs(page, Entry.class), "key", key))) results.add(litorderedmap("c", e.value, "slice", str(s.globalID())));
          }
          return serveJSON(results);
        }
        if (eqic(uri, "/bot/latestEntries"))
          return serveJSON(map(takeFirst(10, slice.idx_latestEntries.objectIterator()), entryToMap(true)));
        if (eqic(uri, "/bot/latestPages"))
          return serveJSON(map(takeFirst(10, slice.idx_latestCreatedPages.objectIterator()), pageToMap()));
        if (eqic(uri, "/bot/latestChangedPages"))
          return serveJSON(map(takeFirst(10, slice.idx_latestChangedPages.objectIterator()), pageToMap()));
        if (eqic(uri, "/bot/googleUsersCount"))
          return serveJSON(countConcepts(GoogleUser.class));
        if (eqic(uri, "/bot/totalPageCount"))
          return serveJSON(countConcepts(Page.class));
        if (eqic(uri, "/bot/trustedSignersCount"))
          return serveJSON(countConcepts(Signer.class, "trusted", true));
        if (eqic(uri, "/bot/valueSearch")) {
          String value = params.get("value");
          List<Entry> entries = conceptsWhereIC(cc, Entry.class, "value", value);
          return serveJSON(map(takeFirst(100, entries), entryToMap(true)));
        }
        if (eqic(uri, "/bot/keyAndValueSearch")) {
          String key = params.get("key"), value = params.get("value");
          Collection<Page> pages = pagesForKeyAndValue(key, value);
          return servePagesToBot(pages);
        }
        if (eqic(uri, "/bot/pagesWithKey")) {
          String key = params.get("key");
          return servePagesToBot(pagesWithKey(key));
        }
        if (eqic(uri, "/bot/match")) {
          PositionalTokenIndex2 index = slice.positionalIndex;
          if (index == null)
            return "No positional index";
          return serveJSON(fastJoinAll(positionalTokenIndex2_matchAll_returnTokenizations(q, index)));
        }
        if (eqic(uri, "/bot/aLookup")) {
          String key = params.get("key"), value = params.get("value");
          Collection<Page> pages = pagesForKeyAndValue(key, value);
          return serveJSON(collect("q", pages));
        }
        if (eqic(uri, "/bot/bLookup")) {
          String value = params.get("value");
          return serveJSON(keysForPageAndValue(q, value));
        }
        if (eqic(uri, "/bot/keyValuePairsByPopularity")) {
          List<Pair<String, String>> pairs = map(list(Entry.class), e -> pair(e.key, e.value));
          List<Pair<String, Integer>> pairs2 = multiSetTopPairs(ciMultiSet(map("pairToUglyStringForCIComparison", pairs)));
          return serveJSON(map(pairs2, p -> {
            String key;
            String value;
            Pair<String, String> __18 = pairFromUglyString(p.a);
            key = __18.a;
            value = __18.b;
            return litorderedmap("n", p.b, "key", key, "value", value);
          }));
        }
        if (eqic(uri, "/bot/pagesAndValuesForKey")) {
          String key = params.get("key");
          List<Entry> entries = conceptsWhereIC(cc, Entry.class, "key", key);
          List<Pair<String, String>> pairs = map(entries, e -> pair(e.page.get().q, e.value));
          return serveJSON(pairsToLists(pairs));
        }
        if (eqic(uri, "/bot/allKeys"))
          return serveListToBot(distinctCIFieldValuesOfConcepts(cc, Entry.class, "key"));
        if (eqic(uri, "/bot/allKeysByPopularity"))
          return serveListToBot(mapMultiSetByPopularity(distinctCIFieldValuesOfConcepts_multiSet(cc, Entry.class, "key"), (key, n) -> litorderedmap("n", n, "key", key)));
        if (eqic(uri, "/bot/dbSize"))
          return serveJSON(l(conceptsFile()));
        if (eqic(uri, "/bot/query"))
          return serveBotQuery();
        if (eqic(uri, "/bot/createSlice")) {
          Slice slice = createSlice(assertNempty(params.get("name")));
          return serveJSON(litorderedmap("id", str(slice.globalID), "name", slice.name));
        }
        if (eqic(uri, "/bot/dumpAllSlices") && authed()) {
          List<Map> out = new ArrayList();
          for (Slice slice : list(Slice.class)) try {
            out.add(litorderedmap("slice", slice.caseID, "ms", returnTimeFor(() -> agiBlue.dumpSliceToFile(agiBlue.loadBackgroundSlice(slice)))));
          } catch (Throwable e) {
            _handleException(e);
            out.add(litorderedmap(slice.caseID, "error", exceptionToStringShort(e)));
          }
          return serveJSON(out);
        }
        if (eqic(uri, "/bot/dumpSlice")) {
          File f = agiBlue.dumpSliceToFile(slice);
          return "OK, saved as: " + f2s(f);
        }
        if (eqic(uri, "/bot/diskStats"))
          return serveJSON(litcimap("sizeOnDisk", agiBlue.sizeOnDisk.get(), "freeDiskSpace", freeDiskSpace()));
        if (eqic(uri, "/bot/memStats")) {
          Map<String, ?> fg = cloneMap(agiBlue.loadedSlices);
          Map<String, ?> bg = cloneMap(agiBlue.backgroundSlices);
          return serveJSON(litcimap("error", agiBlue.checkDoubleLoads(), "centralIndexEntries", l(agiBlue.centralIndex), "centralIndexMade", renderHowLongAgo(agiBlue.centralIndexMade), "centralIndexMadeInMS", agiBlue.centralIndexMadeIn, "numLoadedForegroundSlices", l(fg), "numLoadedBackgroundSlices", l(bg), "loadedForegroundSlicesEstimatedSize", longSum(map(s -> agiBlue.estimatedSliceDataSize(s), keys(fg))), "loadedBackgroundSlicesEstimatedSize", longSum(map(s -> agiBlue.estimatedSliceDataSize(s), keys(bg))), "loadedForegroundSlices", sortedIC(keysList(fg)), "loadedBackgroundSlices", sortedIC(keysList(bg)), "sessionsWithGoogleUsers", countPred(list(Session.class), s -> s.user.get() instanceof GoogleUser), "userObjects", countConcepts(User.class), "processSize", getOpt(vmBus_query("processSize"), "processSize"), "slices", countConcepts(Slice.class)));
        }
        if (eqic(uri, "/bot/centralIndexGet")) {
          CentralIndexEntry e = agiBlue.centralIndex.get(q);
          return serveJSON(e == null ? ll() : map(e.slices, sliceToMap()));
        }
        if (eqic(uri, "/bot/centralIndexGrab")) {
          CentralIndexEntry ie = agiBlue.centralIndex.get(q);
          List<Map> out = new ArrayList();
          if (ie != null)
            for (Slice slice : ie.slices) {
              AGIBlue.LoadedSlice ls = agiBlue.loadBackgroundSlice(slice);
              WorksOnSlice wos = new WorksOnSlice(ls);
              Page page = wos.findPageFromQ(q);
              Iterable<Entry> entries = agiBlue.entriesOnPage(page);
              print("Page for " + q + " in slice " + ls.caseID + ": " + yesNo(page != null) + " - " + l(entries));
              Entry e = first(entries);
              if (e != null)
                out.add(litorderedmap("a", page.q, "b", e.key, "c", e.value, "slice", slice.caseID));
            }
          return serveJSON(out);
        }
        if (eqic(uri, "/bot/centralIndexLiteralSearch")) {
          List<String> entries = containingIC(keys(agiBlue.centralIndex), q);
          return serveJSON(entries);
        }
        if (eqic(uri, "/bot/updateCentralIndex") && authed()) {
          agiBlue.rst_index.trigger();
          return "OK";
        }
        if (eqic(uri, "/bot/allGoogleEmails") && authed())
          return serveJSON(collect("googleEmail", list(GoogleUser.class)));
        if (eqic(uri, "/bot/words2_spaces_all"))
          return serveJSON(mapToValues_ciMap("words2_spaces_cached", collect("q", conceptsSortedByFieldCI(slice.cc, Page.class, "q"))));
        if (eqic(uri, "/bot/words2_spaces_collapse_all"))
          return serveJSON(mapToValues_ciMap("words2_spaces_collapse_cached", collect("q", conceptsSortedByFieldCI(slice.cc, Page.class, "q"))));
        if (eqic(uri, "/bot/makeManyPages")) {
          List<String> qs = tlft(params.get("pages"));
          slice.haltSliceDumping = true;
          try {
            for (String _q : unnull(qs)) {
              ping();
              pageFromQ(_q);
            }
          } finally {
            slice.haltSliceDumping = true;
            slice.rstDumpSlice.trigger();
          }
          return "OK (" + l(qs) + ")";
        }
        if (eqic(uri, "/bot/sliceNamesMap"))
          return serveJSON(mapToMap(list(Slice.class), s -> pair(str(s.globalID), s.name)));
        if (eqic(uri, "/bot/sliceForName")) {
          Slice slice = agiBlue.sliceForName(q);
          return serveJSON(slice == null ? null : str(slice.globalID));
        }
        if (eqic(uri, "/bot/allowOpenPosting")) {
          {
            Object __14 = errorIfNotOwnerOfSlice();
            if (__14 != null)
              return __14;
          }
          boolean allow = eq("1", params.get("allow"));
          cset(sliceInfo(), "openPosting", allow);
          return "Set openPosting to " + allow;
        }
        if (eqic(uri, "/bot/createUnusedNumberedPage")) {
          int n = 1;
          while (findPageFromQ(q + n) != null) ++n;
          return serveJSON(litmap("q", pageFromQ(q + n).q));
        }
        return subBot_serve404();
      }

      public Object serveBotQuery() {
        String query = params.get("query");
        return agiBlue.new Query(slice).process(query);
      }

      public int searchResultsToShow() {
        return agiBlue.searchResultsToShow;
      }

      public Object serveLiteralSearch() {
        String q = params.get("q");
        List<Page> searchResults = literalSearch(q);
        return serveSearchResults("literal search", q, searchResultsToShow(), searchResults);
      }

      public List<Page> literalSearch(String q, Object... __) {
        int searchResultsToShow = optPar("max", __, 100);
        return takeFirst(clipIntPlus(searchResultsToShow, 1), agiBlue.pagesSortedByLength(filter(list(cc, Page.class), p -> cic(p.q, q))));
      }

      public Object serveScoredSearch() {
        String q = params.get("q");
        List<Page> searchResults = (List<Page>) dm_call("agiBlueSearch", "search", q, "cc", cc);
        return serveSearchResults("scored search", q, searchResultsToShow(), searchResults);
      }

      public Object serveLevenSearch() {
        String q = params.get("q");
        List<Page> searchResults = levenSearch(q);
        return serveSearchResults("leven search with distance 1", q, searchResultsToShow(), searchResults);
      }

      public List<Page> levenSearch(String q, Object... __) {
        int searchResultsToShow = optPar("max", __, 100);
        int maxEditDistance = 1;
        Map<Page, Integer> map = new HashMap();
        for (Page p : list(cc, Page.class)) {
          int distance = leven_limitedIC(q, p.q, maxEditDistance + 1);
          if (distance <= maxEditDistance)
            map.put(p, distance);
        }
        return takeFirst(clipIntPlus(searchResultsToShow, 1), keysSortedByValue(map));
      }

      public Object serveSearchResults(String searchType, String q, int searchResultsToShow, Collection<Page> searchResults) {
        String title = "agi.blue " + searchType + " for " + htmlEncode2(quote(q)) + " (" + (l(searchResults) >= searchResultsToShow ? searchResultsToShow + "+ results" : nResults(l(searchResults))) + ")";
        return hhtml_agiBlue(hhead_title(htmldecode_dropAllTags(title)) + hbody(hfullcenter(h3(title) + p_nemptyLines_showFirst(searchResultsToShow, map(pageToHTMLLink(), searchResults)))));
      }

      public Object serveQueryPage() {
        String query = params.get("query");
        if (query == null)
          query = loadSnippet("#1024258");
        String title = agiBlueNameHTML() + " | Execute a query script (" + targetBlank("http://code.botcompany.de/1024274", "ALQL") + ")";
        return hhtml_miniPage(title, h3(title) + form(htextarea(query, "name", "query", "cols", 80, "rows", 10, "autofocus", true) + "<br><br>" + hsubmit("Execute"), "action", "/bot/query"));
      }

      public Object hhtml_miniPage(String htmlTitle, Object contents) {
        return hhtml_agiBlue(hhead_title(htmldecode_dropAllTags(htmlTitle)) + hbody(hfullcenter(contents)));
      }

      public String sliceHomeURL() {
        return slice == null ? agiBlue.agiBlueURL() : sliceHomeURL(slice.sliceConcept.globalID);
      }

      public String sliceHomeURL(Slice slice) {
        return sliceHomeURL(slice.globalID);
      }

      public String sliceHomeURL(GlobalID slice) {
        return agiBlue.agiBlueURL() + hquery("slice", slice);
      }

      public String sliceLinkHTML(Slice slice) {
        return slice == null ? "-" : ahref(sliceHomeURL(slice), htmlEncode2(slice.name));
      }

      public Object serveCreateSlicePage() {
        String sliceName = trim(params.get("sliceName"));
        if (eq(params.get("doIt"), "1") && nempty(sliceName)) {
          Slice slice = createSlice(sliceName);
          return hrefresh(sliceHomeURL(slice.globalID));
        }
        String title = agiBlueNameHTML() + " | Create slice";
        return hhtml_agiBlue(hhead_title(htmldecode_dropAllTags(title)) + hbody(hfullcenter(h3(title) + form(hhidden("doIt", 1) + "Slice name: " + htextinput("sliceName", sliceName, "autofocus", true) + "<br><br>" + hsubmit("Create slice")))));
      }

      public Object serveDeletePage() {
        q = params.get("q");
        Page page = findPageFromQ(q);
        if (page == null)
          return "Page " + quote(q) + " not found in slice " + htmlEncode(slice.name());
        {
          Object __15 = errorIfNotOwnerOfSlice();
          if (__15 != null)
            return __15;
        }
        deleteConcepts(findBackRefs(page, AbstractEntry.class));
        cdelete(page);
        return hrefresh(1.0, sliceHomeURL()) + "Page deleted";
      }

      public Object serveDeleteSlice() {
        assertNempty("Need slice param", params.get("slice"));
        {
          Object __16 = errorIfNotOwnerOfSlice();
          if (__16 != null)
            return __16;
        }
        String caseID = sliceConcept.caseID;
        agiBlue.unloadSlice(caseID);
        File dir = sliceDir(sliceConcept);
        if (!dirExists(dir))
          return "Dir not found: " + f2s(dir);
        moveDirectory(dir, programFile("deletedSlices/" + sliceConcept.caseID));
        cset(session, "selectedSlice", null);
        cdelete(sliceConcept);
        return serveText("Slice " + caseID + " deleted (& backed up)");
      }

      public Object errorIfNotOwnerOfSlice() {
        boolean ownage = slice.sliceConcept.owner.get() == session.user.get();
        if (!ownage)
          return subBot_serve403("Sorry, you don't own slice " + htmlEncode(slice.name()));
        return null;
      }

      public F1<Page, String> pageToHTMLLink(Object... __) {
        int displayLength = optPar("displayLength", __, agiBlue.displayLength);
        return new F1<Page, String>() {

          public String get(Page p) {
            try {
              String name = pageDisplayName(p);
              return ahref(agiBlue.agiBlue_pageURLWithSlice(p), htmlEncode2(shorten(displayLength, name)), "title", name);
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "S name = pageDisplayName(p);\r\n        ret ahref(agiBlue_pageURLWithSlice(p),\r...";
          }
        };
      }

      public String sliceSelector() {
        return htag("table", tr((!agiBlue.showGoogleLogIn ? "" : td(googleSignIn_signInButton(agiBlue.agiBlueURL() + "/google-verify", "console.log(data);", ""), "style", "padding-right: 10px;") + td(nobr(ahref("javascript:signOut()", "Sign out")), "style", "padding-right: 10px; padding-bottom: 0.15em")) + (!agiBlue.showSliceSelector ? "" : hform(td("Select reality slice: " + hselect(availableSlices(), session.selectedSlice, "name", "slice", "onchange", "this.form.submit()") + " &nbsp; | " + ahref(agiBlue.agiBlueURL("/slices"), nSlices(countConcepts(Slice.class))) + " | " + ahref(agiBlue.agiBlueURL() + "/createSlice", "Create slice..."))))));
      }

      public String sliceAsHTML() {
        if (slice.isMainSlice())
          return htmlEncode2(agiBlue.agiBlueName() + "'s main slice");
        if (slice.sliceConcept == null)
          return "Slice ???";
        return htmlEncode2("Slice " + quote(slice.sliceConcept.name));
      }

      public Slice sliceConcept() {
        return slice.sliceConcept;
      }

      public String footer() {
        return p(small(elapsedMS_sysNow(started) + " ms"));
      }

      public String verifiedEmail() {
        if (session == null || !(session.user.get() instanceof GoogleUser))
          return null;
        return ((GoogleUser) session.user.get()).googleEmail;
      }

      public boolean authed() {
        boolean ver = eqic(verifiedEmail(), "stefan.reich.maker.of.eye@googlemail.com");
        print("Auth check " + verifiedEmail() + " -> " + ver);
        return ver;
      }

      public String googleSignInID() {
        return eqic(domain(), "botcompany.de") ? botCompanyGoogleSignInID() : agiBlueGoogleSignInID();
      }

      public String hhtml_agiBlue(String contents) {
        return hhtml(hAddToHead_fast(contents, hIncludeGoogleFont("Source Sans Pro") + loadJQuery() + hmobilefix() + googleSignIn_header("", googleSignInID()) + hstylesheet("body { font-family: Source Sans Pro }")));
      }

      public Object serveClasses() {
        List<Entry> entries = conceptsWhereCI(cc, Entry.class, "key", "_class");
        MultiSet<String> classesAndCount = ciMultiSet();
        for (Entry e : entries) classesAndCount.add(e.value);
        String title = agiBlueNameHTML() + " | " + htmlEncode(sliceConcept().name) + " | Classes";
        return hhtml_miniPage(title, h3(title) + htmlTable2(map(keys(classesAndCount), c -> litorderedmap("Class", pageToHTMLLink().get(findPageFromQ(c)), "Elements", classesAndCount.get(c))), "htmlEncode", false));
      }

      public Object serveSlicesList() {
        String sort = getAny(params, "sort", "by");
        List<Slice> slices;
        String shown;
        if (eqic(sort, "name")) {
          slices = asList(agiBlue.idx_slicesByName.objectIterator());
          shown = "sorted by name";
        } else {
          sort = "date";
          slices = asList(agiBlue.idx_slicesByModification.objectIterator());
          shown = "last modified first";
        }
        String title = agiBlueNameHTML() + " has " + nSlices(slices);
        PreIncLongCounter counter = new PreIncLongCounter();
        return hhtml_agiBlue(hhead_title_decode(title) + hbody(hfullcenter(h1(title) + p(joinWithSpacedVBar(ahrefIf(neqic(sort, "name"), agiBlue.agiBlueURL() + "/slices" + hquery("sort", "name"), "List by name"), ahrefIf(neqic(sort, "date"), agiBlue.agiBlueURL() + "/slices" + hquery("sort", "date"), "List by date"), ahref(agiBlue.agiBlueURL() + "/createSlice", "Create slice..."))) + htmlTable2(map(slices, slice -> litorderedmap("Name", sliceLinkHTML(slice), "ID", ahref(sliceHomeURL(slice), str(slice.globalID)), "Owner", str(slice.owner.get()))), "htmlEncode", false))));
      }

      public Object serveUsersList() {
        String sort = getAny(params, "sort", "by");
        List<User> users;
        String shown;
        if (eqic(sort, "name"))
          users = asList(agiBlue.idx_usersByName.objectIterator());
        else {
          sort = "seen";
          users = asList(agiBlue.idx_usersBySeen.objectIterator());
        }
        String title = agiBlueNameHTML() + " has " + nUsers(users);
        PreIncLongCounter counter = new PreIncLongCounter();
        return hhtml_agiBlue(hhead_title_decode(title) + hbody(hfullcenter(h1(title) + p(joinWithSpacedVBar(ahrefIf(neqic(sort, "name"), agiBlue.agiBlueURL() + "/users" + hquery("sort", "name"), "List by name"), ahrefIf(neqic(sort, "seen"), agiBlue.agiBlueURL() + "/users" + hquery("sort", "seen"), "List by last seen"), ahref(agiBlue.agiBlueURL() + "/createSlice", "Create slice..."))) + htmlTable2(map(users, user -> litorderedmap("Name", ahref(userHomeURL(user), htmlEncode2(str(user))), "Last seen", renderHowLongAgo(user.lastSeen))), "htmlEncode", false))));
      }

      public String sliceInfoHTML() {
        User owner = slice.sliceConcept.owner.get();
        return owner == null ? "" : p("This slice is owned by " + userHTML(owner));
      }

      public String userHomeURL(User user) {
        return user == null ? null : agiBlue.agiBlueURL() + "/user/" + user.globalID;
      }

      public String userHTML(User user) {
        return user == null ? "nobody" : ahref(userHomeURL(user), htmlEncode2(str(user)));
      }

      public String top() {
        return nempty(get) ? "" : hcomment("cookie: " + takeFirst(4, session.cookie)) + hSilentComputatorWithFlag("agi.blue: " + q) + p(ahref(sliceHomeURL(), hsnippetimg("#1101822", "width", 314, "height", 125, "title", "agi.blue - Wikipedia for robots"))) + h2(ahref_unstyled(sliceHomeURL(), htmlEncode2(slice.sliceConcept.name), "style", "color: yellow")) + sliceInfoHTML() + p(small(agiBlueNameHTML_boldWithSize() + (agiBlue.agiBlue_isOriginal() ? "" : " " + targetBlank("http://agi.blue", "[original]")) + " | " + ahref(agiBlue.agiBlueURL("/slices"), nSlices(countConcepts(Slice.class))) + " | " + targetBlank(progLink(), "source code") + " of this web site (" + nLines(sourceCodeLines) + ") | " + "by " + targetBlank("https://BotCompany.de", "BC") + " | " + targetBlank("http://fiverr.tinybrain.de/", "Fiverr") + " | " + targetBlank("https://discordapp.com/invite/SEAjPqk", "Discord") + " | " + targetBlank("https://www.youtube.com/watch?v=b6jtRdV3Ev8", "Video") + " | " + targetBlank("http://code.botcompany.de/1024233", "Notes") + " | " + ahref(agiBlue.agiBlueURL() + "/query", "Query")));
      }

      public Slice createSlice(String name) {
        name = shorten(name, agiBlue.maxSliceNameLength);
        if (agiBlue.sliceForName(name) != null)
          throw fail("A slice with the name " + quote(name) + " exists, please choose another name.");
        Slice slice = cnew(Slice.class, "name", name, "owner", session.user);
        cset(slice, "caseID", slice.defaultCaseID());
        agiBlue.loadSlice(slice).initialSetup(slice.globalID);
        return slice;
      }

      public Object serveCheckboxes() {
        conceptsSortedByFieldCI_verbose = true;
        int showMax = 1000;
        Collection<Page> pages = takeFirst(showMax, conceptsSortedByFieldCI(slice.cc, Page.class, "q"));
        String title = "Select pages";
        return hhtml_miniPage(title, h3(title) + hpostform(htmlTable2(map(pages, page -> litorderedmap("Page", hcheckbox("page_" + page.globalID()) + " " + pageToHTMLLink().get(page))), "htmlEncode", false) + h3("Add an entry to all selected pages") + p("Key: " + hinputfield("key") + " Value: " + hinputfield("value")) + p(hsubmit("Add entries")), "action", agiBlue.agiBlueURL() + "/multiAdd"));
      }

      public Object serveMultiAdd() {
        String key = trim(params.get("key")), value = trim(params.get("value"));
        if (empty(key) || empty(value))
          return "Need key and value";
        Matches m = new Matches();
        List<Page> pages = new ArrayList();
        for (String a : keys(params)) {
          String b = params.get(a);
          if (startsWith(a, "page_", m))
            addIfNotNull(pages, conceptWhere(cc, Page.class, "globalID", m.rest()));
        }
        if (empty(pages))
          return "No pages selected";
        for (Page page : pages) agiBlue.new GetEntriesAndPost(cc).go(page, params);
        return "Entry added to " + nPages(pages);
      }

      public String agiBlueNameHTML() {
        return ahref(agiBlue.agiBlueURL(), htmlEncode2(agiBlue.agiBlueName()));
      }

      public String agiBlueNameHTML_boldWithSize() {
        Long size = agiBlue.sizeOnDisk.peek();
        return b(agiBlueNameHTML()) + (size == null ? "" : " " + spanTitle("Size of agi.blue's database on disk", "(" + toM(size) + " MB)"));
      }

      public IF1<Page, Map> pageToMap(Object... __) {
        boolean withEntries = boolPar("withEntries", __);
        boolean nameOnly = eqOneOf(optPar("nameOnly", __), "1", true);
        if (nameOnly)
          return (IF1<Page, Map>) p -> litmap("q", p.q);
        return (IF1<Page, Map>) p -> {
          List<Entry> entries = findBackRefs(p, Entry.class);
          return litorderedmap("q", p.q, "nEntries", l(entries), "created", p.created, "modified", p._modified, "entries", !withEntries ? null : map(entries, entryToMap(false)));
        };
      }

      public IF1<Entry, Map> entryToMap(boolean withPage) {
        return (IF1<Entry, Map>) e -> litorderedmap("created", e.created, "i", e.count, "key", e.key, "value", e.value, "q", withPage ? e.page.get().q : null, "signer", getString("globalID", e.signer.get()));
      }

      public IF1<Slice, Map> sliceToMap() {
        return (IF1<Slice, Map>) s -> litorderedmap("created", s.created, "globalID", str(s.globalID), "name", s.name, "caseID", s.caseID);
      }

      public Object servePageToBot(Page page, Map<String, String> params) {
        if (page == null)
          return serveJSON(null);
        params = asCIMap(params);
        Map map = pageToMap("withEntries", valueIs1("withEntries", params)).get(page);
        return serveJSON(map);
      }

      public Map<String, String> availableSlices() {
        List<Slice> slices = asList(agiBlue.idx_slicesByName.objectIterator());
        return mapToOrderedMap(s -> pair(str(s.globalID), s.name + " [ID: " + s.globalID + "]"), slices);
      }

      public Object serveSearchAction() {
        q = trim(params.get("q"));
        if (empty(q))
          return "You are searching for nothing";
        Map<String, CentralIndexEntry> ci = agiBlue.centralIndex;
        List<String> entries = containingIC(keys(ci), q);
        String title = htmlEncode2("Searching for " + quote(q));
        return hhtml_miniPage(title, h2(agiBlueNameHTML() + " | " + title) + h3("Results in slice " + htmlEncode2(quote(sliceConcept().name))) + p("TODO") + h3(firstToUpper(nResults(entries)) + " in central index (" + l(ci) + ")") + htmlTable2(map(entries, e -> {
          CentralIndexEntry ee = ci.get(e);
          return litorderedmap("Phrase", ahref(empty(ee.slices) ? null : agiBlue_linkForPhrase(e, "slice", first(ee.slices).globalID), htmlEncode2(e)), "Slices", joinWithComma(map(takeFirst(3, ee.slices), s -> ahref(agiBlue_linkForPhrase(e, "slice", s.globalID), htmlEncode(s.name)))) + (l(ee.slices) > 3 ? " + " + (l(ee.slices) - 3) + " more" : ""));
        }), "htmlEncode", false));
      }
    }
  }

  static public JavaXClassLoader hotwire_makeClassLoader(List<File> files) {
    ClassLoader cl = myClassLoader();
    return new JavaXClassLoaderWithParent2(null, files, cl, parseClassesToShareList(classesToShare));
  }

  static public AGIBlue agiBlue() {
    return agiBlue;
  }

  static public File sliceDir(Slice slice) {
    return programFile(slice.caseID);
  }

  static public long guessClusteredSizeOfProgramDirWithoutBackups() {
    return guessClusteredDirSizeWithoutBackups(programDir());
  }

  static public String pairToUglyStringForCIComparison(Pair<String, String> p) {
    return p == null ? null : l(p.a) + "|" + p.a + "|" + p.b;
  }

  static public GlobalID aGlobalIDObject() {
    return aGlobalIDObj();
  }

  static public String uniqueFileNameUsingMD5_80_v2(String fullName) {
    return uniqueFileNameUsingMD5_80_v2(fullName, md5(fullName));
  }

  static public String uniqueFileNameUsingMD5_80_v2(String fullName, String md5) {
    return takeFirst(80 - 33, fileNameEncode(fullName)) + " - " + md5;
  }

  static public GlobalID aGlobalIDObj() {
    return asGlobalID(randomID(16));
  }

  static public long globalIDPart1(GlobalID id) {
    return id == null ? 0 : id.a;
  }

  static public short globalIDPart2(GlobalID id) {
    return id == null ? 0 : (short) id.b;
  }

  static public GlobalID toGlobalIDObj(String s) {
    return s == null ? null : new GlobalID(s);
  }

  static public GlobalID toGlobalIDObj(GlobalID globalID) {
    return globalID;
  }

  static public GlobalID globalIDFromParts(long a, short b) {
    GlobalID id = new GlobalID();
    id.a = a;
    id.b = b;
    return id;
  }

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

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

  static public int cset(Concept c, Object... values) {
    try {
      if (c == null)
        return 0;
      int changes = 0;
      values = expandParams(c.getClass(), values);
      warnIfOddCount(values);
      for (int i = 0; i + 1 < l(values); i += 2) {
        String field = (String) values[i];
        Object value = values[i + 1];
        Field f = setOpt_findField(c.getClass(), field);
        if (value instanceof RC)
          value = c._concepts.getConcept((RC) value);
        value = deref(value);
        if (value instanceof String && l((String) value) >= concepts_internStringsLongerThan)
          value = intern((String) value);
        if (f == null) {
          c.fieldValues = syncMapPut2_createLinkedHashMap(c.fieldValues, assertIdentifier(field), value instanceof Concept ? c.new Ref((Concept) value) : value);
          c.change();
        } else if (isSubtypeOf(f.getType(), Concept.Ref.class)) {
          ((Concept.Ref) f.get(c)).set((Concept) derefRef(value));
          c.change();
          ++changes;
        } else {
          Object old = f.get(c);
          if (neq(value, old)) {
            f.set(c, value);
            if ((f.getModifiers() & java.lang.reflect.Modifier.TRANSIENT) == 0)
              c.change();
            ++changes;
          }
        }
      }
      return changes;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static public <A> Set<A> synchroLinkedHashSet() {
    return Collections.synchronizedSet(new LinkedHashSet<A>());
  }

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

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

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

  static public <A> A get(A[] l, int idx) {
    return idx >= 0 && idx < l(l) ? l[idx] : null;
  }

  static public boolean get(boolean[] l, int idx) {
    return idx >= 0 && idx < l(l) ? l[idx] : false;
  }

  static public Object get(Object o, String field) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class)
        return get((Class) o, field);
      if (o instanceof Map)
        return ((Map) o).get(field);
      Field f = getOpt_findField(o.getClass(), field);
      if (f != null) {
        makeAccessible(f);
        return f.get(o);
      }
      if (o instanceof DynamicObject)
        return ((DynamicObject) o).fieldValues.get(field);
    } catch (Exception e) {
      throw asRuntimeException(e);
    }
    throw new RuntimeException("Field '" + field + "' not found in " + o.getClass().getName());
  }

  static public Object get_raw(String field, Object o) {
    return get_raw(o, field);
  }

  static public Object get_raw(Object o, String field) {
    try {
      if (o == null)
        return null;
      Field f = get_findField(o.getClass(), field);
      makeAccessible(f);
      return f.get(o);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Object get(Class c, String field) {
    try {
      Field f = get_findStaticField(c, field);
      makeAccessible(f);
      return f.get(null);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  static public Field get_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 get_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 Object get(String field, Object o) {
    return get(o, field);
  }

  static public long now_virtualTime;

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

  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 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 == '\0')
        out.append("\\0");
      else
        out.append(c);
    }
    out.append('"');
  }

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

  static public <A> List<A> tripleToList(T3<A, A, A> t) {
    return t == null ? null : ll(t.a, t.b, t.c);
  }

  static public File saveLinesAsTextFile(String fileName, Iterable<String> lines) {
    try {
      return saveTextFile(fileName, lines(lines));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public File saveLinesAsTextFile(File fileName, Iterable<String> lines) {
    return saveLinesAsTextFile(fileName.getPath(), lines);
  }

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

  static public RuntimeException rethrow(String msg, Throwable t) {
    throw new RuntimeException(msg, t);
  }

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

  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(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(File f) {
    return getFileSize(f) == 0;
  }

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

  static public <A extends Concept> A uniqCI_sync(Concepts concepts, Class<A> c, final Object... params) {
    return withDBLock(concepts, new F0<A>() {

      public A get() {
        try {
          return uniqCI(concepts, c, params);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret uniqCI(concepts, c, params);";
      }
    });
  }

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

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

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

  static volatile public PersistableThrowable _handleException_lastException;

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

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

  static public <A, B> void removeAllKeysNotIn(Map<A, B> a, Map<A, ?> b) {
    if (a != null)
      removeAllBut(a, keys(b));
  }

  static public Set<String> sliceDump_pageNamesIncludingKeys(File f) {
    Set<String> names = ciSet();
    CloseableIterableIterator<String> it = linesFromFile(f);
    try {
      while (it.hasNext()) {
        try {
          String s = trim(it.next());
          if (empty(s))
            continue;
          if (startsWith(s, '"')) {
            names.add(unquote(s));
            continue;
          }
          List l = optCast(List.class, safeUnstructure(s));
          if (l(l) != 3) {
            print("Can't parse: " + s);
            continue;
          }
          names.add((String) second(l));
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
      return names;
    } finally {
      _close(it);
    }
  }

  static public <A, B> B getOrCreate(Map<A, B> map, A key, Class<? extends B> c) {
    try {
      B b = map.get(key);
      if (b == null)
        map.put(key, b = c.newInstance());
      return b;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A, B> B getOrCreate(Map<A, B> map, A key, Object f) {
    try {
      B b = map.get(key);
      if (b == null)
        map.put(key, b = (B) callF(f));
      return b;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A, B> B getOrCreate(Class<? extends B> c, Map<A, B> map, A key) {
    return getOrCreate(map, key, c);
  }

  static public void logStructure(File logFile, Object o) {
    logQuoted(logFile, structure(o));
  }

  static public void logStructure(String fileName, Object o) {
    logStructure(getProgramFile(fileName), o);
  }

  static public void logStructure(String progID, String fileName, Object o) {
    logStructure(getProgramFile(progID, fileName), o);
  }

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

  static public PositionalTokenIndex2 positionalTokenIndex2_wordTok(Iterable<String> l) {
    return new PositionalTokenIndex2(wordTokAllAndCompact(l));
  }

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

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

  static public long done2_always(long startTime, String desc) {
    long time = sysNow() - startTime;
    saveTiming_noPrint(time);
    print(desc + " [" + time + " ms]");
    return time;
  }

  static public long done2_always(String desc, long startTime) {
    return done2_always(startTime, desc);
  }

  static public long done2_always(long startTime) {
    return done2_always(startTime, "");
  }

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

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

  static public void releaseEmptyFieldValuesOfAllConcepts(Concepts cc) {
    for (Concept c : cc.allConcepts()) dynamicObject_releaseEmptyFieldValues(c);
  }

  static public void onConceptsChange(Runnable r) {
    onConceptsChange(db_mainConcepts(), r);
  }

  static public void onConceptsChange(Concepts cc, Runnable r) {
    cc.addConceptIndex(simpleConceptIndex(r));
    cc.onAllChanged.add(r);
  }

  static public Runnable rOnceAtATimeOnly(Runnable r) {
    if (r == null)
      return null;
    AtomicBoolean running = new AtomicBoolean();
    return new Runnable() {

      public void run() {
        try {
          if (!running.compareAndSet(false, true))
            return;
          try {
            r.run();
          } finally {
            running.set(false);
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "if (!running.compareAndSet(false, true)) return;\r\n    try {\r\n      r.run();\r\n...";
      }
    };
  }

  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 <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 void indexConceptFieldsCI(Concepts concepts, Object... params) {
    for (int i = 0; i < l(params); i += 2) indexConceptFieldCI(concepts, (Class) params[i], (String) params[i + 1]);
  }

  static public void indexConceptFields(Object... params) {
    int i = 0;
    Concepts concepts;
    if (first(params) instanceof Concepts) {
      concepts = (Concepts) first(params);
      ++i;
    } else
      concepts = db_mainConcepts();
    for (; i < l(params); i += 2) indexConceptField(concepts, (Class) params[i], (String) params[i + 1]);
  }

  static public void indexSingletonConcept(Concepts cc, Class<? extends Concept> c) {
    indexConceptField(cc, c, "_dummy");
  }

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

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

  static public <A, B> Map<A, B> syncMap() {
    return synchroHashMap();
  }

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

  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 volatile public StringBuffer local_log = new StringBuffer();

  static volatile public Appendable print_log = local_log;

  static volatile public int print_log_max = 1024 * 1024;

  static volatile public int local_log_max = 100 * 1024;

  static public boolean print_silent = false;

  static public Object print_byThread_lock = new Object();

  static volatile public ThreadLocal<Object> print_byThread;

  static volatile public Object print_allThreads;

  static volatile public Object print_preprocess;

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

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

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

  static public void print_noNewLine(String s) {
    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;
    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);
  }

  static public void print_autoRotate() {
  }

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

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

  static public String subBot_clientIP() {
    return getClientIP_subBot();
  }

  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(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 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 boolean eq_icIf(boolean ignoreCase, String a, String b) {
    return ignoreCase ? eqic(a, b) : eq(a, b);
  }

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

  static public Concept cnew(String name, Object... values) {
    Class<? extends Concept> cc = findClass(name);
    Concept c = cc != null ? nuObject(cc) : new Concept(name);
    csetAll(c, values);
    return c;
  }

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

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

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

  static public int l(Object[] a) {
    return a == null ? 0 : a.length;
  }

  static public int l(boolean[] a) {
    return a == null ? 0 : a.length;
  }

  static public int l(byte[] a) {
    return a == null ? 0 : a.length;
  }

  static public int l(short[] a) {
    return a == null ? 0 : a.length;
  }

  static public int l(long[] a) {
    return a == null ? 0 : a.length;
  }

  static public int l(int[] a) {
    return a == null ? 0 : a.length;
  }

  static public int l(float[] a) {
    return a == null ? 0 : a.length;
  }

  static public int l(double[] a) {
    return a == null ? 0 : a.length;
  }

  static public int l(char[] a) {
    return a == null ? 0 : a.length;
  }

  static public int l(Collection c) {
    return c == null ? 0 : c.size();
  }

  static public int l(Iterator i) {
    return iteratorCount_int_close(i);
  }

  static public int l(Map m) {
    return m == null ? 0 : m.size();
  }

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

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

  static public int l(Object o) {
    return o == null ? 0 : o instanceof String ? l((String) o) : o instanceof Map ? l((Map) o) : o instanceof Collection ? l((Collection) o) : o instanceof Object[] ? l((Object[]) o) : o instanceof boolean[] ? l((boolean[]) o) : o instanceof byte[] ? l((byte[]) o) : o instanceof char[] ? l((char[]) o) : o instanceof short[] ? l((short[]) o) : o instanceof int[] ? l((int[]) o) : o instanceof float[] ? l((float[]) o) : o instanceof double[] ? l((double[]) o) : o instanceof long[] ? l((long[]) o) : (Integer) call(o, "size");
  }

  static public int l(MultiSet ms) {
    return ms == null ? 0 : ms.size();
  }

  static public <A> List<A> sortByFieldInPlace(List<A> l, String field) {
    sort(l, fieldComparator(field));
    return l;
  }

  static public <A> List<A> sortByFieldInPlace(String field, List<A> l) {
    return sortByFieldInPlace(l, field);
  }

  static public void numberEntriesInConceptField(String field, List<? extends Concept> entries) {
    for (int i = 0; i < l(entries); i++) if (getInt(entries.get(i), field) == 0)
      cset(entries.get(i), field, i + 1);
  }

  static public int count(Collection l, Object o) {
    int count = 0;
    for (Object x : l) if (eq(x, o))
      ++count;
    return count;
  }

  static public <A, B, C> T3<A, B, C> t3(A a, B b, C c) {
    return new T3(a, b, c);
  }

  static public int countLines(String s) {
    return l(toLines(s));
  }

  static public String mySource() {
    return loadSnippet(programID());
  }

  static public boolean cleanUp_interruptThreads = false;

  static public void cleanUp(Object c) {
    if (c == null)
      return;
    if (c instanceof AutoCloseable) {
      close_pcall(((AutoCloseable) c));
      return;
    }
    if (c instanceof java.util.Timer) {
      ((java.util.Timer) c).cancel();
      return;
    }
    if (c instanceof Collection) {
      cleanUp((Collection) c);
      return;
    }
    if (c instanceof Map) {
      for (Object o : keys((Map) c)) cleanUp(o);
      for (Object o : values((Map) c)) cleanUp(o);
      ((Map) c).clear();
      return;
    }
    try {
      preCleanUp(c);
      setOpt(c, "ping_pauseAll", false);
      innerCleanUp(c);
      List androids = (List) getOpt(c, "record_list");
      for (Object android : unnull(androids)) pcallOpt(android, "dispose");
      List<WeakReference> classes = (List<WeakReference>) (getOpt(c, "hotwire_classes"));
      if (classes != null)
        for (WeakReference cc : classes) {
          try {
            cleanUp(cc.get());
          } catch (Throwable __e) {
            _handleException(__e);
          }
        }
      if (cleanUp_interruptThreads) {
        List<Thread> threads = registeredThreads(c);
        if (nempty(threads)) {
          print("cleanUp: Interrupting " + n2(threads, "thread") + ": " + joinWithComma(allToString(threads)));
          interruptThreads(threads);
        }
      }
    } catch (Throwable __e) {
      _handleException(__e);
    }
    setOpt(c, "cleaningUp_flag", false);
    if (c instanceof Class && ((Class) c).getName().equals("main"))
      retireClassLoader(((Class) c).getClassLoader());
  }

  static public void cleanUp(Collection l) {
    if (l == null)
      return;
    for (Object c : l) cleanUp(c);
    l.clear();
  }

  static public <A> A printWithTime(A a) {
    return printWithTime("", a);
  }

  static public <A> A printWithTime(String s, A a) {
    print(hmsWithColons() + ": " + s, a);
    return a;
  }

  static public boolean bootstrapDataFrom(String progID) {
    File otherDir = javaxDataDir(progID);
    File myDir = programDir();
    if (sameFile(otherDir, myDir))
      return false;
    if (!directoryIsEmpty(myDir))
      return false;
    print("Importing data from: " + progID + " to " + programID());
    copyAllFilesInDirectory_rec_noOverwrite(otherDir, myDir);
    return true;
  }

  static public void deleteMyBackups() {
    deleteFiles(conceptBackupFiles(dbProgramID()));
  }

  static public void thinMyBackups() {
    thinAProgramsBackups(dbProgramID(), true);
  }

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

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

  static public <A extends Concept> A uniq_returnIfNew(Class<A> c, Object... params) {
    Pair<A, Boolean> p = uniq2(c, params);
    return p.b ? p.a : null;
  }

  static public PKIKeyPair agiBot_trustedKeyForMachine() {
    return pkiKeyPairFromTwoLineFile(agiBot_trustedKeyForMachine_file());
  }

  static public <A extends Concept> A uniq_sync(final Class<A> c, final Object... params) {
    return uniq(c, params);
  }

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

  static public java.util.Timer doEveryAndNow(int delay, Object r) {
    return doEveryStartingNow(delay, r);
  }

  static public java.util.Timer doEveryAndNow(double delay, Object r) {
    return doEveryStartingNow(toInt(toMS(delay)), r);
  }

  static public <A> Runnable rWatcher(IF0<A> calc, Runnable r) {
    return new Runnable() {

      public A value;

      public void run() {
        A newValue = callF(calc);
        if (neq(value, newValue)) {
          value = newValue;
          callF(r);
        }
      }
    };
  }

  static public long db_mainConceptsChangeCount() {
    return db_mainConcepts().xchangeCount();
  }

  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 <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(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 boolean amProgram(String snippetID) {
    return sameSnippetID(programID(), snippetID);
  }

  static public boolean agiBlueURL_noHTTPS = false;

  static public String agiBlueURL_url = "https://agi.blue";

  static public String agiBlueURL() {
    return agiBlueURL_noHTTPS ? replacePrefix("https://", "http://", agiBlueURL_url) : agiBlueURL_url;
  }

  static public String prependSlash(String s) {
    return addSlashPrefix(s);
  }

  static public long psI(String snippetID) {
    return parseSnippetID(snippetID);
  }

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

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

  static public boolean isProgramID(String snippetID) {
    return amProgram(snippetID);
  }

  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 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 <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[]) new Object[0] : a;
  }

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

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

  static public void lock(Lock lock) {
    try {
      ping();
      if (lock == null)
        return;
      try {
        lock.lockInterruptibly();
      } catch (InterruptedException e) {
        print("Locking interrupted! I probably deadlocked, oops.");
        printStackTrace(e);
        rethrow(e);
      }
      ping();
    } 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 <A> A assertNotNull(A a) {
    assertTrue(a != null);
    return a;
  }

  static public <A> A assertNotNull(String msg, A a) {
    assertTrue(msg, a != null);
    return a;
  }

  static public void unlock(Lock lock, String msg) {
    if (lock == null)
      return;
    print("Unlocking: " + msg);
    lock.unlock();
  }

  static public void unlock(Lock lock) {
    if (lock == null)
      return;
    lock.unlock();
  }

  static public <A> A lowestByField(Iterable<A> l, String field) {
    Lowest<A> lowest = new Lowest();
    for (A a : unnull(l)) lowest.put(a, toDouble(getOpt(a, "field")));
    return lowest.get();
  }

  static public <A> A lowestByField(String field, Iterable<A> l) {
    return lowestByField(l, field);
  }

  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 <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 <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 List<ALQLLine> agiBlue_parseQueryScript(String script) {
    return map("agiBlue_parseQueryLine", tlftj_honoringBrackets(script));
  }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  static public T3 tripleMap(Object f, T3 t) {
    return t == null ? null : triple(callF(f, t.a), callF(f, t.b), callF(f, t.c));
  }

  static public <A> T3<A, A, A> tripleMap(T3<A, A, A> t, IF1<A, A> f) {
    return tripleMap(f, t);
  }

  static public <A> T3<A, A, A> tripleMap(IF1<A, A> f, T3<A, A, A> t) {
    return t == null ? null : triple(callF(f, t.a), callF(f, t.b), callF(f, t.c));
  }

  static public T3 tripleMap(T3 t, Object f) {
    return tripleMap(f, t);
  }

  static public boolean isDollarVar(String s) {
    return startsWith(s, '$') && isJavaIdentifierAfter(s, 1);
  }

  static public RuntimeException todo() {
    throw new RuntimeException("TODO");
  }

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

  static public Random random_random = new Random();

  static public int random(int n) {
    return random(random_random, 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(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 <A extends Concept> List<A> conceptsWhereCI(Class<A> c, Object... params) {
    return findConceptsWhereCI(c, params);
  }

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

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

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

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

  static public <A> void addIfNotNull(MultiSet<A> ms, A a) {
    if (a != null && ms != null)
      ms.add(a);
  }

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

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

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

  static public String curly(String s) {
    return optionalCurlyBrace(s);
  }

  static public String hquery(Map params) {
    return htmlQuery(params);
  }

  static public String hquery(Object... data) {
    return htmlQuery(data);
  }

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

  static public Object _get(Object o, String field) {
    return get(o, field);
  }

  static public Object _get(String field, Object o) {
    return get(o, field);
  }

  static public <A> A _get(A[] l, int idx) {
    return idx >= 0 && idx < l(l) ? l[idx] : null;
  }

  static public <A, B> Map<A, B> mapPutOrCreate_multi(Map<A, B> map, Object... keysAndValues) {
    for (int i = 0; i + 1 < l(keysAndValues); i += 2) {
      A key = (A) (keysAndValues[i]);
      B value = (B) (keysAndValues[i + 1]);
      map = mapPutOrCreate(map, key, value);
    }
    return map;
  }

  static public <A> List<A> sharedKeys(Map<A, ?> a, Map<A, ?> b) {
    List<A> l = new ArrayList();
    if (nempty(a) && nempty(b))
      for (A key : cloneKeys(a)) if (b.containsKey(key))
        l.add(key);
    return l;
  }

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

  static public <A, B, C> A first(T3<A, B, C> t) {
    return t == null ? null : t.a;
  }

  static public File conceptsFile(String progID) {
    return getProgramFile(progID, conceptsFileName());
  }

  static public File conceptsFile() {
    return conceptsFile(dbProgramID());
  }

  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> 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 Class mc() {
    return main.class;
  }

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

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

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

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

  static public 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 List ccollect(Collection<? extends Concept> c, String field) {
    List l = new ArrayList();
    if (c != null)
      for (Concept a : c) l.add(cget(a, field));
    return l;
  }

  static public List ccollect(String field, Collection<? extends Concept> c) {
    return ccollect(c, field);
  }

  static public boolean hasConceptWhereIC(Class<? extends Concept> c, Object... params) {
    return conceptWhereIC(c, params) != null;
  }

  static public <A> A highestByField(String field, Collection<A> l) {
    A best = null;
    Object bestValue = null;
    if (l != null)
      for (A a : l) {
        Object val = getOpt(a, field);
        if (val != null && (bestValue == null || cmp(val, bestValue) > 0)) {
          best = a;
          bestValue = val;
        }
      }
    return best;
  }

  static public <A> A highestByField(Collection<A> l, String field) {
    return highestByField(field, l);
  }

  static public <A> List<A> objectsWhereIC(Collection<A> c, Object... data) {
    if (c == null)
      return null;
    List<A> l = new ArrayList();
    for (A x : c) if (checkFieldsIC(x, data))
      l.add(x);
    return l;
  }

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

  static public boolean isAGIDomain(String s) {
    return regexpMatchesIC("[a-z0-9-]+\\.agi\\.blue", s);
  }

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

  static public String fixAGILink(String s) {
    if (!isAbsoluteURL(s))
      return s;
    String host = hostNameFromURL(s);
    if (!isAGIBlueDomain(host))
      return s;
    String sub = dropSuffixIC(theAGIBlueDomain(), host);
    if (l(sub) <= maximumDomainPartLength())
      return s;
    return "http://" + theAGIBlueDomain() + hquery(mapPlus(paramsFromURL(s), "domain", host));
  }

  static public String absoluteURL(String url) {
    return isAbsoluteURL(url) ? url : "http://" + url;
  }

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

  static public int shorten_default = 100;

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

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

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

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

  static public String agiBlue_linkForPhrase(String phrase, Object... additionalParams) {
    return agiBlueURL() + hquery(arrayPlus(additionalParams, "q", phrase));
  }

  static public void sleepWhile(IF0<Boolean> pred, Object... __) {
    int interval = optPar("interval", __, 50);
    double max = optPar("max", __, 10.0);
    long time = sysNow();
    while (sysNow() <= time + toMS(max) && pred.get()) sleep(interval);
  }

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

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

  static public String domain() {
    return domainName();
  }

  static public boolean ewic(String a, String b) {
    return endsWithIgnoreCase(a, b);
  }

  static public boolean ewic(String a, String b, Matches m) {
    return endsWithIgnoreCase(a, b, m);
  }

  static public String dropMultipleSlashes(String s) {
    return regexpReplace_direct(s, "//+", "/");
  }

  static public String subBot_query() {
    return (String) mapGet(subBot_getHttpFiles(), "query");
  }

  static public String cookieFromUser() {
    return (String) callOpt(getBot("#1002157"), "cookieFromUser");
  }

  static public <A extends Concept> A unlistedWithValues(Class<A> c, Object... params) {
    A a = unlisted(c);
    cset(a, params);
    return a;
  }

  static public boolean isGlobalID(String s) {
    return possibleGlobalID(s);
  }

  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 String assertGlobalID(String s) {
    return assertPossibleGlobalID(s);
  }

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

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

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

  static public String classShortName(Object o) {
    return shortClassName(o);
  }

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

  static public <A> A printStruct(String prefix, A a) {
    printStructure(prefix, a);
    return a;
  }

  static public <A> A printStruct(A a) {
    printStructure(a);
    return a;
  }

  static public Payload googleVerifyUserToken2(String clientID, String token) {
    try {
      NetHttpTransport transport = new NetHttpTransport();
      GoogleIdTokenVerifier verifier = new GoogleIdTokenVerifier.Builder(transport, new JacksonFactory()).setAudience(Collections.singletonList(clientID)).build();
      GoogleIdToken idToken = verifier.verify(token);
      if (idToken != null)
        return idToken.getPayload();
      return null;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static public long myTranspilationDate_value = 1572270583135L;

  static public long myTranspilationDate() {
    return myTranspilationDate_value;
  }

  static public TreeSet<String> asCISet(Iterable<String> c) {
    return toCaseInsensitiveSet(c);
  }

  static public TreeSet<String> asCISet(String... x) {
    return toCaseInsensitiveSet(x);
  }

  static public List<String> nempties(Collection<String> c) {
    return filterNempty(c);
  }

  static public MultiMap<String, String> subBot_paramsAsMultiMap() {
    return decodeHQueryToMultiMap(mapGet(subBot_getHttpFiles(), "query"));
  }

  static public <A, B> A firstKeyWithValue(Map<A, B> map, B value) {
    if (map != null)
      for (Map.Entry<A, B> e : map.entrySet()) if (eq(e.getValue(), value))
        return e.getKey();
    return null;
  }

  static public <A, B> A firstKeyWithValue(B value, Map<A, B> map) {
    return firstKeyWithValue(map, value);
  }

  static public String agiBlue_urlToQuery(String url) {
    String s = unpackAGIDomainOpt(url);
    if (s != null && neqic(s, "www"))
      return s.replace("-", " ");
    return url;
  }

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

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

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

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

  static public <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 parseInt(String s) {
    return emptyString(s) ? 0 : Integer.parseInt(s);
  }

  static public int parseInt(char c) {
    return Integer.parseInt(str(c));
  }

  static public String pageNav2(String baseLink, int count, int value, int step, String nVar, Object... __) {
    List<String> l = new ArrayList();
    baseLink += contains(baseLink, "?") ? "&" : "?" + urlencode(nVar) + "=";
    if (value > 0)
      l.add(ahref(baseLink + max(0, value - step), stringPar("leftArrow", __, htmlencode(unicode_leftPointingTriangle()))));
    for (int i = 0; i < count; i += step) {
      int n = i / step + 1;
      if (pageNav2_showPage(value, i, step, count))
        if (value == i)
          l.add(b(n));
        else
          l.add(ahref(baseLink + i, n));
    }
    if (value + step < count)
      l.add(ahref(baseLink + (value + step), stringPar("rightArrow", __, htmlencode(unicode_rightPointingTriangle()))));
    return p("Pages: " + lines(l));
  }

  static public boolean pageNav2_showPage(int actual, int i, int step, int count) {
    int diff = abs(actual - i) / step;
    return i == 0 || i >= (count - 1) / step * step || diff <= 10 || diff < 100 && ((i / step) % 10) == 9 || ((i / step) % 100) == 99;
  }

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

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

  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 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 h1(String s, Object... params) {
    return tag("h1", s, params);
  }

  static public String nPages(int n) {
    return n2(n, "page");
  }

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

  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 String nConnections(int n) {
    return n2(n, "connection");
  }

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

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

  static public String p_nemptyLines(Iterable l) {
    return p(nlToBr(nemptyLines(l)));
  }

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

  static public <A> List<A> subList(int startIndex, int endIndex, List<A> l) {
    return subList(l, startIndex, endIndex);
  }

  static public <A> List<A> subList(List<A> l, int startIndex, int endIndex) {
    if (l == null)
      return null;
    int n = l(l);
    startIndex = Math.max(0, startIndex);
    endIndex = Math.min(n, endIndex);
    if (startIndex >= endIndex)
      return ll();
    if (startIndex == 0 && endIndex == n)
      return l;
    return l.subList(startIndex, endIndex);
  }

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

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

  static public String hfullcenterAndTopLeft(Object contents, Object topLeft) {
    return tag("table", tr(td(topLeft, "align", "left", "height", "1")) + tr(td(contents, "align", "center")), "width", "100%", "height", "100%");
  }

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

  static public boolean isSquareBracketedInt(String s) {
    return isSquareBracketed(s) && isInteger(deSquareBracket(s));
  }

  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 && 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 unSquareBracket(String s) {
    return deSquareBracket(s);
  }

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

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

  static public int maxInt() {
    return maxIntValue();
  }

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

  static public Object dm_call(Object moduleOrID, String method, Object... args) {
    Object mod = dm_getModule(moduleOrID);
    if (mod == null)
      return null;
    AutoCloseable __0 = dm_enter(mod);
    try {
      return call_withVarargs(mod, method, args);
    } finally {
      _close(__0);
    }
  }

  static public int clipIntPlus(int a, int b) {
    return longToInt_clip(((long) a) + b);
  }

  static public <A> List<A> listMinus(Collection<A> l, Object... stuff) {
    if (l == null)
      return null;
    List l2 = similarEmptyList(l);
    Set set = lithashset(stuff);
    for (Object o : l) if (!set.contains(o))
      l2.add(o);
    return l2;
  }

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

  static public String ahref_unstyled(String link, Object contents, Object... params) {
    if (link == null)
      return str(contents);
    return ahref(link, contents, paramsPlus(params, "style", unparseCSSParameter(mapPlus_noOverwrite(parseCSSParameter(stringPar("style", params)), "text-decoration", "none", "color", "inherit"))));
  }

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

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

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

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

  static public String p_nemptyLines_showFirst(int maxLines, Collection l) {
    if (l(l) <= maxLines)
      return p_nemptyLines(l);
    return p_nemptyLines(listPlus(takeFirst(maxLines, l), "..."));
  }

  static public String unicode_spacedRightPointingTriangle() {
    return spaced(unicode_rightPointingTriangle());
  }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  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 void vmBus_send(String msg, Object... args) {
    Object arg = vmBus_wrapArgs(args);
    pcallFAll(vm_busListeners_live(), msg, arg);
    pcallFAll(vm_busListenersByMessage_live().get(msg), msg, arg);
  }

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

  static public 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 tr(Object contents) {
    return tag("tr", contents);
  }

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

  static public String iframe(String url, Object... params) {
    return hfulltag("iframe", "", arrayPlus(params, "src", url));
  }

  static public Object[] wrapMapAsParams(Map map) {
    return empty(map) ? null : new Object[] { map };
  }

  static public <A> A assertNempty(A a) {
    return assertNempty("empty", a);
  }

  static public <A> A assertNempty(String msg, A a) {
    if (empty(a))
      throw fail(msg + ": " + a);
    return a;
  }

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

  static public Matcher regexpIC(Pattern pat, String s) {
    return pat.matcher(unnull(s));
  }

  static public Matcher regexpIC(String pat, String s) {
    return compileRegexpIC(pat).matcher(unnull(s));
  }

  static public Pattern regexpIC(String pat) {
    return compileRegexpIC(pat);
  }

  static public boolean regexpFindIC(Pattern pat, String s) {
    return regexpICFind(pat, s);
  }

  static public boolean regexpFindIC(String pat, String s) {
    return regexpICFind(pat, s);
  }

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

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

  static public String getSignerKey(String signed) {
    String s = fullTrimLastLine(signed);
    Matches m = new Matches();
    if (swic_trim(s, "signer:", m))
      return m.rest();
    return null;
  }

  static public boolean isSignedWithKey_verbose = false;

  static public boolean isSignedWithKey(String signed, String key) {
    try {
      List<String> lines = toLines(signed);
      if (swic(last(lines), "signer:"))
        popLast(lines);
      String sigLine = last(lines);
      String text = fromLines(dropLast(lines));
      String sig = dropPrefixMandatory("sig: ", sigLine);
      return PKI.verifySignature(PKI.publicKeyFromString(key), PKI.signatureFromString(sig), toUtf8(text));
    } catch (RuntimeException e) {
      if (isSignedWithKey_verbose)
        printStackTrace(e);
      return false;
    }
  }

  static public String dropLastTwoLines(String s) {
    return dropLastLine(dropLastLine(s));
  }

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

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

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

  static public List<String> fastJoinAll(Iterable<? extends List<String>> l) {
    return map(x -> fastJoin(x), l);
  }

  static public List<List<String>> positionalTokenIndex2_matchAll_returnTokenizations(String pat, PositionalTokenIndex2 idx) {
    List<String> tokPat = wordTok_plusAsterisk(pat);
    List<List<String>> list = positionalTokenIndex2_filter(idx, tokPat);
    List<List<String>> out = new ArrayList();
    if (list == null)
      return out;
    int n = l(tokPat), nAsterisks = countAsteriskTokens(tokPat);
    search: for (List<String> tok : list) {
      int iVars = 0;
      for (int i = 1; i < n; i += 2) {
        String t = tokPat.get(i);
        if (!t.equals("*") && !eqic(t, tok.get(i)))
          continue search;
      }
      out.add(tok);
    }
    return out;
  }

  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<Pair<A, Integer>> multiSetTopPairs(MultiSet<A> ms) {
    List<Pair<A, Integer>> l = new ArrayList();
    for (A a : ms.highestFirst()) l.add(pair(a, ms.get(a)));
    return l;
  }

  static public MultiSet<String> ciMultiSet() {
    MultiSet ms = new MultiSet();
    ms.map = ciMap();
    return ms;
  }

  static public MultiSet<String> ciMultiSet(Iterable<String> l) {
    return asCIMultiSet(l);
  }

  static public Pair<String, String> pairFromUglyString(String s) {
    if (empty(s))
      return null;
    int i = indexOf(s, '|');
    int lA = parseInt(takeFirst(s, i));
    return pair(substring(s, i + 1, i + 1 + lA), substring(s, i + 1 + lA + 1));
  }

  static public <A> List<List<A>> pairsToLists(Iterable<Pair<A, A>> l) {
    return map("pairToList", l);
  }

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

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

  static public <A, B> List<B> mapMultiSetByPopularity(MultiSet<A> ms, F2<A, Integer, B> f) {
    List<B> l = new ArrayList();
    if (ms != null)
      for (A key : ms.highestFirst()) l.add(callF(f, key, ms.get(key)));
    return l;
  }

  static public <A, B> List<B> mapMultiSetByPopularity(MultiSet<A> ms, IF2<A, Integer, B> f) {
    List<B> l = new ArrayList();
    if (ms != null)
      for (A key : ms.highestFirst()) l.add(callF(f, key, ms.get(key)));
    return l;
  }

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

  static public <A extends Concept> MultiSet<String> distinctCIFieldValuesOfConcepts_multiSet(Concepts concepts, Class<A> c, String field) {
    IFieldIndex<A, String> index = concepts.getCIFieldIndex(c, field);
    if (index != null)
      return index.allValues_multiSet();
    MultiSet<String> set = ciMultiSet();
    for (A x : concepts.list(c)) set.add((String) getOpt(x, field));
    return set;
  }

  static public long returnTimeFor(int n, Object f) {
    long time = sysNow();
    for (int i = 0; i < n; i++) callF(f);
    return ratio(sysNow() - time, n);
  }

  static public long returnTimeFor(Runnable f) {
    return returnTimeFor(1, f);
  }

  static public String exceptionToStringShort(Throwable e) {
    lastException(e);
    e = getInnerException(e);
    String msg = hideCredentials(unnull(e.getMessage()));
    if (msg.indexOf("Error") < 0 && msg.indexOf("Exception") < 0)
      return baseClassName(e) + prependIfNempty(": ", msg);
    else
      return msg;
  }

  static public String 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 TreeMap litcimap(Object... x) {
    return litCIMap(x);
  }

  static public long freeDiskSpace() {
    return userDir().getUsableSpace();
  }

  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 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 long longSum(Iterable<Long> l) {
    long sum = 0;
    for (Long i : unnull(l)) if (i != null)
      sum += i;
    return sum;
  }

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

  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 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 Object getOpt(Object o, String field) {
    return getOpt_cached(o, field);
  }

  static public Object getOpt(String field, Object o) {
    return getOpt_cached(o, field);
  }

  static public Object getOpt_raw(Object o, String field) {
    try {
      Field f = getOpt_findField(o.getClass(), field);
      if (f == null)
        return null;
      makeAccessible(f);
      return f.get(o);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Object getOpt(Class c, String field) {
    try {
      if (c == null)
        return null;
      Field f = getOpt_findStaticField(c, field);
      if (f == null)
        return null;
      makeAccessible(f);
      return f.get(null);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Field getOpt_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);
    return null;
  }

  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 yesNo(boolean b) {
    return yesno(b);
  }

  static public String yesNo(Boolean b) {
    return yesno(b);
  }

  static public List<String> containingIC(Collection<String> l, final String x) {
    List<String> out = new ArrayList();
    for (String s : unnull(l)) if (cic(s, x))
      out.add(s);
    return out;
  }

  static public List<String> containingIC(String x, Collection<String> l) {
    return containingIC(l, x);
  }

  static public Map mapToValues_ciMap(Iterable<String> l, Object f) {
    return mapToValues_ciMap(f, l);
  }

  static public Map mapToValues_ciMap(Object f, Iterable<String> l) {
    Map map = ciMap();
    if (l != null)
      for (String o : l) map.put(o, callF(f, o));
    return map;
  }

  static public <B> Map<String, B> mapToValues_ciMap(Iterable<String> l, IF1<String, B> f) {
    return mapToValues_ciMap(f, l);
  }

  static public Map<String, String> words2_spaces_cached_cache = synchronizedMRUCache(defaultStringTransformerCacheSize());

  static public String words2_spaces_cached(String s) {
    String out = words2_spaces_cached_cache.get(s);
    if (out == null)
      words2_spaces_cached_cache.put(s, out = words2_spaces(s));
    return out;
  }

  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 Map<String, String> words2_spaces_collapse_cached_cache = synchronizedMRUCache(defaultStringTransformerCacheSize());

  static public String words2_spaces_collapse_cached(String s) {
    String out = words2_spaces_collapse_cached_cache.get(s);
    if (out == null)
      words2_spaces_collapse_cached_cache.put(s, out = words2_spaces_collapse(s));
    return out;
  }

  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 mapToMap(Object f, Iterable l) {
    Map map = new HashMap();
    for (Object o : unnull(l)) {
      Pair p = (Pair) (callF(f, o));
      map.put(p.a, p.b);
    }
    return map;
  }

  static public <A, B, C> Map<B, C> mapToMap(IF1<A, Pair<B, C>> f, Iterable<A> l) {
    Map<B, C> map = new HashMap();
    for (A o : unnull(l)) {
      Pair<B, C> p = callF(f, o);
      map.put(p.a, p.b);
    }
    return map;
  }

  static public <A, B, C> Map<B, C> mapToMap(Iterable<A> l, IF1<A, Pair<B, C>> f) {
    return mapToMap(f, l);
  }

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

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

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

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

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

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

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

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

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

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

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

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

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

  static public int leven_limitedIC(String left, String right, int threshold) {
    if (--threshold < 0)
      return 0;
    int n = l(left);
    int m = l(right);
    if (n == 0)
      return m <= threshold ? m : threshold + 1;
    if (m == 0)
      return n <= threshold ? n : threshold + 1;
    if (abs(m - n) > threshold)
      return threshold + 1;
    if (n > m) {
      final String tmp = left;
      left = right;
      right = tmp;
      n = m;
      m = right.length();
    }
    int[] p = new int[n + 1];
    int[] d = new int[n + 1];
    int[] tempD;
    final int boundary = Math.min(n, threshold) + 1;
    for (int i = 0; i < boundary; i++) {
      p[i] = i;
    }
    Arrays.fill(p, boundary, p.length, Integer.MAX_VALUE);
    Arrays.fill(d, Integer.MAX_VALUE);
    for (long _j = 1; _j <= m; _j++) {
      int j = (int) _j;
      final char rightJ = right.charAt(j - 1);
      d[0] = j;
      final int min = Math.max(1, j - threshold);
      final int max = j > Integer.MAX_VALUE - threshold ? n : Math.min(n, j + threshold);
      if (min > max) {
        return threshold + 1;
      }
      if (min > 1) {
        d[min - 1] = Integer.MAX_VALUE;
      }
      for (int i = min; i <= max; i++) {
        if (equalsIgnoreCase(left.charAt(i - 1), rightJ)) {
          d[i] = p[i - 1];
        } else {
          d[i] = 1 + Math.min(Math.min(d[i - 1], p[i]), p[i - 1]);
        }
      }
      tempD = p;
      p = d;
      d = tempD;
    }
    if (p[n] <= threshold) {
      return p[n];
    }
    return threshold + 1;
  }

  static public <A, B> List<A> keysSortedByValue(Map<A, B> map) {
    return keysSortedByValues(map);
  }

  static public String nResults(int n) {
    return n2(n, "result");
  }

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

  static public String htmldecode_dropAllTags(String html) {
    return htmldecode(dropAllTags(html));
  }

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

  static public boolean preferCached = false;

  static public boolean loadSnippet_debug = false;

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

  static public int loadSnippet_timeout = 30000;

  static public String loadSnippet(String snippetID) {
    try {
      if (snippetID == null)
        return null;
      return loadSnippet(parseSnippetID(snippetID), preferCached);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String loadSnippet(String snippetID, boolean preferCached) throws IOException {
    return loadSnippet(parseSnippetID(snippetID), preferCached);
  }

  public static String loadSnippet(long snippetID) {
    try {
      return loadSnippet(snippetID, preferCached);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  public static String loadSnippet(long snippetID, boolean preferCached) throws IOException {
    String text;
    if (isLocalSnippetID(snippetID))
      return loadLocalSnippet(snippetID);
    IResourceLoader rl = vm_getResourceLoader();
    if (rl != null)
      return rl.loadSnippet(fsI(snippetID));
    initSnippetCache();
    text = DiskSnippetCache_get(snippetID);
    if (preferCached && text != null)
      return text;
    try {
      if (loadSnippet_debug && text != null)
        System.err.println("md5: " + md5(text));
      String url = tb_mainServer() + "/getraw.php?id=" + snippetID + "&utf8=1";
      if (nempty(text))
        url += "&md5=" + md5(text);
      url += standardCredentials();
      String text2 = loadSnippet_loadFromServer(url);
      boolean same = eq(text2, "==*#*==");
      if (loadSnippet_debug)
        print("loadSnippet: same=" + same);
      if (!same)
        text = text2;
    } catch (RuntimeException e) {
      e.printStackTrace();
      throw new IOException("Snippet #" + snippetID + " not found or not public");
    }
    try {
      initSnippetCache();
      DiskSnippetCache_put(snippetID, text);
    } catch (IOException e) {
      System.err.println("Minor warning: Couldn't save snippet to cache (" + DiskSnippetCache_getDir() + ")");
    }
    return text;
  }

  static public File DiskSnippetCache_dir;

  public static void initDiskSnippetCache(File dir) {
    DiskSnippetCache_dir = dir;
    dir.mkdirs();
  }

  public static synchronized String DiskSnippetCache_get(long snippetID) throws IOException {
    return loadTextFile(DiskSnippetCache_getFile(snippetID).getPath(), null);
  }

  static public File DiskSnippetCache_getFile(long snippetID) {
    return new File(DiskSnippetCache_dir, "" + snippetID);
  }

  public static synchronized void DiskSnippetCache_put(long snippetID, String snippet) throws IOException {
    saveTextFile(DiskSnippetCache_getFile(snippetID).getPath(), snippet);
  }

  public static File DiskSnippetCache_getDir() {
    return DiskSnippetCache_dir;
  }

  public static void initSnippetCache() {
    if (DiskSnippetCache_dir == null)
      initDiskSnippetCache(getGlobalCache());
  }

  static public String loadSnippet_loadFromServer(String url) {
    Integer oldTimeout = setThreadLocal(loadPage_forcedTimeout_byThread, loadSnippet_timeout);
    try {
      return isTrue(loadSnippet_silent.get()) ? loadPageSilently(url) : loadPage(url);
    } finally {
      loadPage_forcedTimeout_byThread.set(oldTimeout);
    }
  }

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

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

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

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

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

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

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

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

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

  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 boolean dirExists(String path) {
    return path != null && new File(path).isDirectory();
  }

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

  static public void moveDirectory(File a, File b) {
    moveFile(a, b);
  }

  static public Object serveText(Object s) {
    return call(getMainBot(), "serveByteArray", toUtf8(str(s)), "text/plain; charset=utf8");
  }

  static public Object subBot_serve403() {
    return call(getMainBot(), "serve403");
  }

  static public Object subBot_serve403(String msg) {
    return call(getMainBot(), "serve403", msg);
  }

  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 googleSignIn_signInButton(String verifyURL, String onSuccess, String onSignOut) {
    return "<div class=\"g-signin2\" data-onsuccess=\"onSignIn\"></div>\r\n    <script>\r\n    function onSignIn(googleUser) {\r\n      console.log(\"Signing in\");\r\n      var profile = googleUser.getBasicProfile();\r\n      var email = profile.getEmail();\r\n      if (email != \"\") {\r\n        var token = googleUser.getAuthResponse().id_token;\r\n        console.log(\"Email: \" + email + \"\\nToken: \" + token);\r\n        var myKeyVals = { token: token };\r\n        $.ajax({\r\n          type: \"POST\",\r\n          url: \"$VERIFYURL\",\r\n          data: myKeyVals,\r\n          dataType: \"text\",\r\n          success: function(data) {\r\n            $ONSUCCESS\r\n          }\r\n        });\r\n      }\r\n    }\r\n\r\n    function signOut() {\r\n      var auth2 = gapi.auth2.getAuthInstance();\r\n      auth2.signOut().then(function () { $ONSIGNOUT});\r\n    }\r\n    </script>\r\n  ".replace("$VERIFYURL", verifyURL).replace("$ONSUCCESS", onSuccess).replace("$ONSIGNOUT", onSignOut);
  }

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

  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 nSlices(long n) {
    return n2(n, "slice");
  }

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

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

  static public long elapsedMS_sysNow(long time) {
    return elapsedMS(time);
  }

  static public String botCompanyGoogleSignInID() {
    return "709303807085-rvu63dqa5hjcii6h0j70lhn7me27cegc.apps.googleusercontent.com";
  }

  static public String agiBlueGoogleSignInID() {
    return "709303807085-l19k12l095cl4c0llu4p6fl1r0phnnki.apps.googleusercontent.com";
  }

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

  static public String hAddToHead_fast(String html, String tag) {
    int idx = indexOfIC(html, "</head>");
    if (idx < 0)
      return tag + html;
    return takeFirst(html, idx) + tag + substring(html, idx);
  }

  static public String hIncludeGoogleFont(String fontFamily) {
    return htag("link", "", "href", "https://fonts.googleapis.com/css?family=" + urlencode(fontFamily) + "&display=swap", "rel", "stylesheet");
  }

  static public String loadJQuery() {
    return "<script src=\"https://code.jquery.com/jquery-1.10.2.js\"></script>";
  }

  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 googleSignIn_header() {
    return googleSignIn_header("");
  }

  static public String googleSignIn_header(String onLoad) {
    return googleSignIn_header(onLoad, botCompanyGoogleSignInID());
  }

  static public String googleSignIn_header(String onLoad, String clientID) {
    return "<script src=\"https://apis.google.com/js/platform.js$PARAM\" async defer></script>\r\n    <meta name=\"google-signin-client_id\" content=\"$CLIENTID\">".replace("$PARAM", nempty(onLoad) ? "?onload=" + urlencode(onLoad) : "").replace("$CLIENTID", clientID);
  }

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

  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[] tdParams = (Object[]) (optPar("tdParams", __));
    Map<String, String> replaceHeaders = (Map<String, String>) (optPar("replaceHeaders", __));
    List<List<String>> rows = new ArrayList();
    List<String> cols = new ArrayList();
    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((Object[]) optPar("tableParams", __), "border", html_valueLessParam())) + "\n");
    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("<tr>\n");
      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 <A, B> B getAny(Map<A, B> map, A... keys) {
    for (A a : unnull(keys)) {
      B b = map.get(a);
      if (b != null)
        return b;
    }
    return null;
  }

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

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

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

  static public String hhead_title_decode(String title) {
    return hhead_title(htmldecode_dropAllTags(title));
  }

  static public String joinWithSpacedVBar(Iterable<String> l) {
    return joinWithVBar(l);
  }

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

  static public String ahrefIf(boolean condition, String link, Object contents, Object... params) {
    return !condition ? str(contents) : ahref(link, contents, params);
  }

  static public String nUsers(long n) {
    return n2(n, "user");
  }

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

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

  static public String hSilentComputatorWithFlag(String flag) {
    return hSilentComputator(hSilentComputator_defaultURI(), flag);
  }

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

  static public String progLink(String id) {
    return "http://tinybrain.de/" + parseSnippetID(id);
  }

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

  static public String nLines(int n) {
    return n2(n, "line");
  }

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

  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 startsWith(String a, String b) {
    return a != null && a.startsWith(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 spanTitle(String title, Object contents) {
    return span(contents, "title", title);
  }

  static public long toM(long l) {
    return (l + 1024 * 1024 - 1) / (1024 * 1024);
  }

  static public String toM(long l, int digits) {
    return formatDouble(toM_double(l), digits);
  }

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

  static public <B> TreeMap<String, B> asCIMap(Map<String, B> map) {
    return asCaseInsensitiveMap(map);
  }

  static public boolean valueIs1(String key, Map<String, String> map) {
    return eq("1", mapGet(map, key));
  }

  static public Map mapToOrderedMap(Object f, Iterable l) {
    LinkedHashMap map = new LinkedHashMap();
    for (Object o : unnull(l)) {
      Pair p = (Pair) (callF(f, o));
      map.put(p.a, p.b);
    }
    return map;
  }

  static public <A, B, C> Map<B, C> mapToOrderedMap(IF1<A, Pair<B, C>> f, Iterable<A> l) {
    LinkedHashMap<B, C> map = new LinkedHashMap();
    for (A o : unnull(l)) {
      Pair<B, C> p = callF(f, o);
      map.put(p.a, p.b);
    }
    return map;
  }

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

  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 ClassLoader myClassLoader() {
    return _getClass(mc()).getClassLoader();
  }

  static public List<String> parseClassesToShareList(String s) {
    return onlyClassNamesThatExist(prependAll("main$", identifiersOnly(javaTokC(s))));
  }

  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 long guessClusteredDirSizeWithoutBackups(File dir) {
    return guessClusteredDirSize(dir, "pred", new F1<File, Object>() {

      public Object get(File f) {
        try {
          return !eqicOneOf(f.getName(), "backup", "backups");
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "!eqicOneOf(f.getName(), \"backup\", \"backups\")";
      }
    });
  }

  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 String md5(String text) {
    try {
      if (text == null)
        return "-";
      return bytesToHex(md5_impl(toUtf8(text)));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String md5(byte[] data) {
    if (data == null)
      return "-";
    return bytesToHex(md5_impl(data));
  }

  static public byte[] md5_impl(byte[] data) {
    try {
      return MessageDigest.getInstance("MD5").digest(data);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String md5(File file) {
    return md5OfFile(file);
  }

  static public String fileNameEncode_safeChars = " ()[]#,!";

  static public String fileNameEncode(String s) {
    StringBuilder buf = new StringBuilder();
    int n = l(s);
    for (int i = 0; i < n; i++) {
      char c = s.charAt(i);
      if (contains(fileNameEncode_safeChars, c))
        buf.append(c);
      else
        buf.append(urlencode(str(c)));
    }
    return str(buf);
  }

  static public GlobalID asGlobalID(String id) {
    return id == null ? null : new GlobalID(id);
  }

  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 <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 void warnIfOddCount(Object... list) {
    if (odd(l(list)))
      printStackTrace("Odd list size: " + list);
  }

  static public Field setOpt_findField(Class c, String field) {
    HashMap<String, Field> map;
    synchronized (getOpt_cache) {
      map = getOpt_cache.get(c);
      if (map == null)
        map = getOpt_makeCache(c);
    }
    return map.get(field);
  }

  static public void setOpt(Object o, String field, Object value) {
    try {
      if (o == null)
        return;
      Class c = o.getClass();
      HashMap<String, Field> map;
      if (getOpt_cache == null)
        map = getOpt_makeCache(c);
      else
        synchronized (getOpt_cache) {
          map = getOpt_cache.get(c);
          if (map == null)
            map = getOpt_makeCache(c);
        }
      if (map == getOpt_special) {
        if (o instanceof Class) {
          setOpt((Class) o, field, value);
          return;
        }
        setOpt_raw(o, field, value);
        return;
      }
      Field f = map.get(field);
      if (f != null) {
        smartSet(f, o, value);
        return;
      }
      if (o instanceof DynamicObject)
        setDyn(((DynamicObject) o), field, value);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void setOpt(Class c, String field, Object value) {
    if (c == null)
      return;
    try {
      Field f = setOpt_findStaticField(c, field);
      if (f != null)
        smartSet(f, null, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  static public Field setOpt_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) {
        makeAccessible(f);
        return f;
      }
      _c = _c.getSuperclass();
    } while (_c != null);
    return null;
  }

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

  static public String intern(String s) {
    return fastIntern(s);
  }

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

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

  static public boolean isSubtypeOf(Class a, Class b) {
    return b.isAssignableFrom(a);
  }

  static public Object derefRef(Object o) {
    if (o instanceof Concept.Ref)
      o = ((Concept.Ref) o).get();
    return o;
  }

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

  static public int globalIDLength() {
    return 16;
  }

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

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

  static volatile public Concepts mainConcepts;

  static public Concepts db_mainConcepts() {
    if (mainConcepts == null) {
      mainConcepts = new Concepts(getDBProgramID());
      mainConcepts.classFinder = _defaultClassFinder();
    }
    return mainConcepts;
  }

  static public Map<Class, ArrayList<Method>> callF_cache = newDangerousWeakHashMap();

  static public <A> A callF(F0<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> A callF(IF0<A> f) {
    return f == null ? null : f.get();
  }

  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, B, C> C callF(IF2<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 callF(Object f, Object... args) {
    try {
      if (f instanceof String)
        return callMC((String) f, args);
      if (f instanceof Runnable) {
        ((Runnable) f).run();
        return null;
      }
      if (f == null)
        return null;
      Class c = f.getClass();
      ArrayList<Method> methods;
      synchronized (callF_cache) {
        methods = callF_cache.get(c);
        if (methods == null)
          methods = callF_makeCache(c);
      }
      int n = l(methods);
      if (n == 0) {
        throw fail("No get method in " + getClassName(c));
      }
      if (n == 1)
        return invokeMethod(methods.get(0), f, args);
      for (int i = 0; i < n; i++) {
        Method m = methods.get(i);
        if (call_checkArgs(m, args, false))
          return invokeMethod(m, f, args);
      }
      throw fail("No matching get method in " + getClassName(c));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public ArrayList<Method> callF_makeCache(Class c) {
    ArrayList<Method> l = new ArrayList();
    Class _c = c;
    do {
      for (Method m : _c.getDeclaredMethods()) if (m.getName().equals("get")) {
        makeAccessible(m);
        l.add(m);
      }
      if (!l.isEmpty())
        break;
      _c = _c.getSuperclass();
    } while (_c != null);
    callF_cache.put(c, l);
    return l;
  }

  static public Field getOpt_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);
    return null;
  }

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

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

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

  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 <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) {
    params = expandParams(c, params);
    A x = findConceptWhereCI(cc, c, params);
    if (x == null) {
      x = unlisted(c);
      csetAll(x, params);
      cc.register(x);
    }
    return x;
  }

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

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

  static public <A extends Concept> List<A> findConceptsWhere(Concepts concepts, Class<A> c, Object... params) {
    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) {
          List<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 List<Concept> findConceptsWhere(Concepts concepts, String c, Object... params) {
    return filterConcepts(concepts.list(c), params);
  }

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

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

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

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

  static public <A> void removeAllBut(Set<A> a, Collection<A> b) {
    if (a != null)
      for (Iterator<A> it = a.iterator(); it.hasNext(); ) if (!contains(b, it.next()))
        it.remove();
  }

  static public <A, B> void removeAllBut(Map<A, B> a, Collection<A> b) {
    if (a != null)
      removeAllBut(a.keySet(), b);
  }

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

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

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

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

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

  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, B, C> B second(T3<A, B, C> t) {
    return t == null ? null : t.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 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 logQuoted(String logFile, String line) {
    logQuoted(getProgramFile(logFile), line);
  }

  static public void logQuoted(File logFile, String line) {
    appendToFile(logFile, quote(line) + "\n");
  }

  static public boolean structure_showTiming, structure_checkTokenCount;

  static public String structure(Object o) {
    return structure(o, new structure_Data());
  }

  static public String structure(Object o, structure_Data d) {
    StringWriter sw = new StringWriter();
    d.out = new PrintWriter(sw);
    structure_go(o, d);
    String s = str(sw);
    if (structure_checkTokenCount) {
      print("token count=" + d.n);
      assertEquals("token count", l(javaTokC(s)), d.n);
    }
    return s;
  }

  static public void structure_go(Object o, structure_Data d) {
    structure_1(o, d);
    while (nempty(d.stack)) popLast(d.stack).run();
  }

  static public void structureToPrintWriter(Object o, PrintWriter out) {
    structure_Data d = new structure_Data();
    d.out = out;
    structure_go(o, d);
  }

  static public boolean structure_allowShortening = false;

  static public class structure_ClassInfo {

    public List<Field> fields;

    public Method customSerializer;

    public boolean special, nullInstances;
  }

  static public class structure_Data {

    public PrintWriter out;

    public int stringSizeLimit;

    public int shareStringsLongerThan = 20;

    public boolean noStringSharing = false;

    public IdentityHashMap<Object, Integer> seen = new IdentityHashMap();

    public HashMap<String, Integer> strings = new HashMap();

    public HashSet<String> concepts = new HashSet();

    public HashMap<Class, structure_ClassInfo> infoByClass = new HashMap();

    public HashMap<Class, Field> persistenceInfo = new HashMap();

    public int n;

    public List<Runnable> stack = new ArrayList();

    public structure_Data append(String token) {
      out.print(token);
      ++n;
      return this;
    }

    public structure_Data append(int i) {
      out.print(i);
      ++n;
      return this;
    }

    public structure_Data append(String token, int tokCount) {
      out.print(token);
      n += tokCount;
      return this;
    }

    public structure_Data app(String token) {
      out.print(token);
      return this;
    }

    public structure_Data app(int i) {
      out.print(i);
      return this;
    }
  }

  static public void structure_1(final Object o, final structure_Data d) {
    try {
      if (o == null) {
        d.append("null");
        return;
      }
      Class c = o.getClass();
      boolean concept = false;
      concept = o instanceof Concept;
      structure_ClassInfo info = d.infoByClass.get(c);
      if (info == null) {
        d.infoByClass.put(c, info = new structure_ClassInfo());
        if ((info.customSerializer = findMethodNamed(c, "_serialize")) != null)
          info.special = true;
      }
      List<Field> lFields = info.fields;
      if (lFields == null) {
        if (o instanceof Number) {
          PrintWriter out = d.out;
          if (o instanceof Integer) {
            int i = ((Integer) o).intValue();
            out.print(i);
            d.n += i < 0 ? 2 : 1;
            return;
          }
          if (o instanceof Long) {
            long l = ((Long) o).longValue();
            out.print(l);
            out.print("L");
            d.n += l < 0 ? 2 : 1;
            return;
          }
          if (o instanceof Short) {
            short s = ((Short) o).shortValue();
            d.append("sh ");
            out.print(s);
            d.n += s < 0 ? 2 : 1;
            return;
          }
          if (o instanceof Float) {
            d.append("fl ", 2);
            quoteToPrintWriter(str(o), out);
            return;
          }
          if (o instanceof Double) {
            d.append("d(", 3);
            quoteToPrintWriter(str(o), out);
            d.append(")");
            return;
          }
          if (o instanceof BigInteger) {
            out.print("bigint(");
            out.print(o);
            out.print(")");
            d.n += ((BigInteger) o).signum() < 0 ? 5 : 4;
            return;
          }
        }
        if (o instanceof Boolean) {
          d.append(((Boolean) o).booleanValue() ? "t" : "f");
          return;
        }
        if (o instanceof Character) {
          d.append(quoteCharacter((Character) o));
          return;
        }
        if (o instanceof File) {
          d.append("File ").append(quote(((File) o).getPath()));
          return;
        }
        Integer ref = d.seen.get(o);
        if (o instanceof String && ref == null)
          ref = d.strings.get((String) o);
        if (ref != null) {
          d.append("t").app(ref);
          return;
        }
        if (!(o instanceof String))
          d.seen.put(o, d.n);
        else {
          String s = d.stringSizeLimit != 0 ? shorten((String) o, d.stringSizeLimit) : (String) o;
          if (!d.noStringSharing) {
            if (d.shareStringsLongerThan == Integer.MAX_VALUE)
              d.seen.put(o, d.n);
            if (l(s) >= d.shareStringsLongerThan)
              d.strings.put(s, d.n);
          }
          quoteToPrintWriter(s, d.out);
          d.n++;
          return;
        }
        if (o instanceof Set) {
          if (((Set) o) instanceof TreeSet) {
            d.append(isCISet_gen(((Set) o)) ? "ciset" : "treeset");
            structure_1(new ArrayList(((Set) o)), d);
            return;
          }
          d.append(((Set) o) instanceof LinkedHashSet ? "lhs" : "hashset");
          structure_1(new ArrayList(((Set) o)), d);
          return;
        }
        String name = c.getName();
        if (o instanceof Collection && !startsWith(name, "main$")) {
          if (name.equals("java.util.Collections$SynchronizedList") || name.equals("java.util.Collections$SynchronizedRandomAccessList")) {
            d.append("sync ");
            {
              structure_1(unwrapSynchronizedList(((List) o)), d);
              return;
            }
          } else if (name.equals("java.util.LinkedList"))
            d.append("ll");
          d.append("[");
          final int l = d.n;
          final Iterator it = ((Collection) o).iterator();
          d.stack.add(new Runnable() {

            public void run() {
              try {
                if (!it.hasNext())
                  d.append("]");
                else {
                  d.stack.add(this);
                  if (d.n != l)
                    d.append(", ");
                  structure_1(it.next(), d);
                }
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "if (!it.hasNext())\r\n          d.append(\"]\");\r\n        else {\r\n          d.sta...";
            }
          });
          return;
        }
        if (o instanceof Map && !startsWith(name, "main$")) {
          if (o instanceof LinkedHashMap)
            d.append("lhm");
          else if (o instanceof HashMap)
            d.append("hm");
          else if (o instanceof TreeMap)
            d.append(isCIMap_gen(((TreeMap) o)) ? "cimap" : "tm");
          else if (name.equals("java.util.Collections$SynchronizedMap") || name.equals("java.util.Collections$SynchronizedSortedMap") || name.equals("java.util.Collections$SynchronizedNavigableMap")) {
            d.append("sync ");
            {
              structure_1(unwrapSynchronizedMap(((Map) o)), d);
              return;
            }
          }
          d.append("{");
          final int l = d.n;
          final Iterator it = ((Map) o).entrySet().iterator();
          d.stack.add(new Runnable() {

            public boolean v = false;

            public Map.Entry e;

            public void run() {
              if (v) {
                d.append("=");
                v = false;
                d.stack.add(this);
                structure_1(e.getValue(), d);
              } else {
                if (!it.hasNext())
                  d.append("}");
                else {
                  e = (Map.Entry) it.next();
                  v = true;
                  d.stack.add(this);
                  if (d.n != l)
                    d.append(", ");
                  structure_1(e.getKey(), d);
                }
              }
            }
          });
          return;
        }
        if (c.isArray()) {
          if (o instanceof byte[]) {
            d.append("ba ").append(quote(bytesToHex((byte[]) o)));
            return;
          }
          final int n = Array.getLength(o);
          if (o instanceof boolean[]) {
            String hex = boolArrayToHex((boolean[]) o);
            int i = l(hex);
            while (i > 0 && hex.charAt(i - 1) == '0' && hex.charAt(i - 2) == '0') i -= 2;
            d.append("boolarray ").append(n).app(" ").append(quote(substring(hex, 0, i)));
            return;
          }
          String atype = "array", sep = ", ";
          if (o instanceof int[]) {
            atype = "intarray";
            sep = " ";
          }
          d.append(atype).append("{");
          d.stack.add(new Runnable() {

            public int i;

            public void run() {
              if (i >= n)
                d.append("}");
              else {
                d.stack.add(this);
                if (i > 0)
                  d.append(", ");
                structure_1(Array.get(o, i++), d);
              }
            }
          });
          return;
        }
        if (o instanceof Class) {
          d.append("class(", 2).append(quote(((Class) o).getName())).append(")");
          return;
        }
        if (o instanceof Throwable) {
          d.append("exception(", 2).append(quote(((Throwable) o).getMessage())).append(")");
          return;
        }
        if (o instanceof BitSet) {
          BitSet bs = (BitSet) o;
          d.append("bitset{", 2);
          int l = d.n;
          for (int i = bs.nextSetBit(0); i >= 0; i = bs.nextSetBit(i + 1)) {
            if (d.n != l)
              d.append(", ");
            d.append(i);
          }
          d.append("}");
          return;
        }
        if (name.startsWith("java.") || name.startsWith("javax.")) {
          d.append("j ").append(quote(str(o)));
          return;
        }
        if (info.special) {
          if (info.customSerializer != null) {
            Object o2 = invokeMethod(info.customSerializer, o);
            d.append("cu ");
            String shortName = dropPrefix("main$", name);
            d.append(shortName);
            d.out.append(' ');
            structure_1(o2, d);
            return;
          } else if (info.nullInstances) {
            d.append("null");
            return;
          } else
            throw fail("unknown special type");
        }
        String dynName = shortDynamicClassName(o);
        if (concept && !d.concepts.contains(dynName)) {
          d.concepts.add(dynName);
          d.append("c ");
        }
        TreeSet<Field> fields = new TreeSet<Field>(new Comparator<Field>() {

          public int compare(Field a, Field b) {
            return stdcompare(a.getName(), b.getName());
          }
        });
        Class cc = c;
        while (cc != Object.class) {
          for (Field field : getDeclaredFields_cached(cc)) {
            String fieldName = field.getName();
            if (fieldName.equals("_persistenceInfo"))
              d.persistenceInfo.put(c, field);
            if ((field.getModifiers() & (java.lang.reflect.Modifier.STATIC | java.lang.reflect.Modifier.TRANSIENT)) != 0)
              continue;
            fields.add(field);
          }
          cc = cc.getSuperclass();
        }
        lFields = asList(fields);
        int n = l(lFields);
        for (int i = 0; i < n; i++) {
          Field f = lFields.get(i);
          if (f.getName().equals("this$1")) {
            lFields.remove(i);
            lFields.add(0, f);
            break;
          }
        }
        info.fields = lFields;
      } else {
        Integer ref = d.seen.get(o);
        if (ref != null) {
          d.append("t").app(ref);
          return;
        }
        d.seen.put(o, d.n);
      }
      Field persistenceInfoField = (Field) (d.persistenceInfo.get(c));
      Map<String, Object> persistenceInfo = persistenceInfoField == null ? null : (Map) persistenceInfoField.get(o);
      LinkedHashMap<String, Object> fv = new LinkedHashMap();
      for (Field f : lFields) {
        Object value;
        try {
          value = f.get(o);
        } catch (Exception e) {
          value = "?";
        }
        if (value != null && (persistenceInfo == null || !Boolean.FALSE.equals(persistenceInfo.get(f.getName()))))
          fv.put(f.getName(), value);
      }
      String name = c.getName();
      String shortName = dropPrefix("main$", name);
      if (startsWithDigit(shortName))
        shortName = name;
      if (concept && eq(fv.get("className"), shortName))
        fv.remove("className");
      if (o instanceof DynamicObject) {
        putAll(fv, (Map) fv.get("fieldValues"));
        fv.remove("fieldValues");
        shortName = shortDynamicClassName(o);
        fv.remove("className");
      }
      String singleField = fv.size() == 1 ? first(fv.keySet()) : null;
      d.append(shortName);
      d.n += countDots(shortName) * 2;
      final int l = d.n;
      final Iterator it = fv.entrySet().iterator();
      d.stack.add(new Runnable() {

        public void run() {
          try {
            if (!it.hasNext()) {
              if (d.n != l)
                d.append(")");
            } else {
              Map.Entry e = (Map.Entry) it.next();
              d.append(d.n == l ? "(" : ", ");
              d.append((String) e.getKey()).append("=");
              d.stack.add(this);
              structure_1(e.getValue(), d);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (!it.hasNext()) {\r\n      if (d.n != l)\r\n        d.append(\")\");\r\n    } else...";
        }
      });
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  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 List<List<String>> wordTokAllAndCompact(Iterable<String> l) {
    return unifyStringsInTokenizations(wordTokAll(l));
  }

  static public List collectField(Collection 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, Collection c) {
    return collectField(c, field);
  }

  static public ThreadLocal<Long> saveTiming_last = new ThreadLocal();

  static public void saveTiming(long ms) {
    print(ms + " ms");
    saveTiming_noPrint(ms);
  }

  static public void saveTiming_noPrint(long ms) {
    saveTiming_last.set(ms);
  }

  static public void dynamicObject_releaseEmptyFieldValues(DynamicObject o) {
    if (o != null && o.fieldValues != null && empty(o.fieldValues))
      o.fieldValues = null;
  }

  static public IConceptIndex simpleConceptIndex(final Runnable r) {
    return new IConceptIndex() {

      public void update(Concept c) {
        pcallF(r);
      }

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

  static public <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 __0 = tempDBLock(cc);
    try {
      params = expandParams(c, params);
      A x = findConceptWhere(cc, c, params);
      if (x == null) {
        x = unlisted(c);
        csetAll(x, params);
        cc.register(x);
      }
      return x;
    } finally {
      _close(__0);
    }
  }

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

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

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

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

  static public void ping_okInCleanUp() {
    if (ping_pauseAll || ping_anyActions)
      ping_impl(true);
  }

  static public Object getThreadLocal(Object o, String name) {
    ThreadLocal t = (ThreadLocal) (getOpt(o, name));
    return t != null ? t.get() : null;
  }

  static public <A> A getThreadLocal(ThreadLocal<A> tl) {
    return tl == null ? null : tl.get();
  }

  static public <A> A getThreadLocal(ThreadLocal<A> tl, A defaultValue) {
    return or(getThreadLocal(tl), defaultValue);
  }

  static public ThreadLocal<Object> print_byThread_dontCreate() {
    return print_byThread;
  }

  static public boolean isFalse(Object o) {
    return eq(false, o);
  }

  static public String fixNewLines(String s) {
    int i = indexOf(s, '\r');
    if (i < 0)
      return s;
    int l = s.length();
    StringBuilder out = new StringBuilder(l);
    out.append(s, 0, i);
    for (; i < l; i++) {
      char c = s.charAt(i);
      if (c != '\r')
        out.append(c);
      else {
        out.append('\n');
        if (i + 1 < l && s.charAt(i + 1) == '\n')
          ++i;
      }
    }
    return out.toString();
  }

  static public void print_append(Appendable buf, String s, int max) {
    try {
      synchronized (buf) {
        buf.append(s);
        if (buf instanceof StringBuffer)
          rotateStringBuffer(((StringBuffer) buf), max);
        else if (buf instanceof StringBuilder)
          rotateStringBuilder(((StringBuilder) buf), max);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public 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 String getClientIP_subBot() {
    Object session = call(getMainBot(), "getSession");
    Map headers = (Map) (call(session, "getHeaders"));
    return getClientIPFromHeaders(headers);
  }

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

  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> int iteratorCount_int_close(Iterator<A> i) {
    try {
      int n = 0;
      if (i != null)
        while (i.hasNext()) {
          i.next();
          ++n;
        }
      if (i instanceof AutoCloseable)
        ((AutoCloseable) i).close();
      return n;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static public Object call(Object o, String method, String[] arg) {
    return call(o, method, new Object[] { arg });
  }

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

  static public <T> void sort(T[] a, Comparator<? super T> c) {
    Arrays.sort(a, c);
  }

  static public <T> void sort(T[] a) {
    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) {
    Collections.sort(a, c);
  }

  static public void sort(List a) {
    Collections.sort(a);
  }

  static public <A> Comparator<A> fieldComparator(final String field) {
    return new Comparator<A>() {

      public int compare(A a, A b) {
        return cmp(getOpt(a, field), getOpt(b, field));
      }
    };
  }

  static public int getInt(List c, int i) {
    return toInt(get(c, i));
  }

  static public int getInt(Map map, Object key) {
    return toInt(mapGet(map, key));
  }

  static public int getInt(Object o, String field) {
    return toInt(getOpt(o, (String) field));
  }

  static public int getInt(String field, Object o) {
    return getInt(o, field);
  }

  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) {
    for (int i = start; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c == '\r' || c == '\n')
        return i;
    }
    return -1;
  }

  static public void close_pcall(AutoCloseable c) {
    if (c != null) {
      try {
        c.close();
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

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

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

  static public void preCleanUp(Object c) {
    if (c instanceof Collection) {
      for (Object o : ((Collection) c)) preCleanUp(o);
      return;
    }
    callOpt(c, "licensed_off");
    setOpt(c, "ping_anyActions", true);
    setOpt(c, "cleaningUp_flag", true);
  }

  static public void innerCleanUp(Object c) {
    if (!isFalse(pcallOpt(c, "cleanMeUp")))
      for (String name : sorted(methodsStartingWith(c, "cleanMeUp_"))) try {
        callOpt(c, name);
      } catch (Throwable e) {
        print("Error cleaning up: " + programID(c));
        _handleException(e);
      }
  }

  static public void innerCleanUp() {
    innerCleanUp(mc());
  }

  static public Object pcallOpt(Object o, String method, Object... args) {
    try {
      return callOpt(o, method, args);
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return null;
  }

  static public List<Thread> registeredThreads(Object o) {
    Map<Thread, Boolean> map = (Map<Thread, Boolean>) (getOpt(o, "_registerThread_threads"));
    if (map == null)
      return ll();
    map.size();
    synchronized (map) {
      return asList(keys(map));
    }
  }

  static public List<Thread> registeredThreads() {
    _registerThread_threads.size();
    return asList(keys(_registerThread_threads));
  }

  static public 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 void interruptThreads(Collection<Thread> threads) {
    for (Thread t : unnull(threads)) t.interrupt();
  }

  static public void interruptThreads(Class mainClass) {
    interruptThreads(registeredThreads(mainClass));
  }

  static public void retireClassLoader(ClassLoader cl) {
    if (isJavaXClassLoader(cl))
      setOptAll(cl, "retired", true, "retiredMarker", new DefunctClassLoader());
  }

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

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

  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 boolean sameFile(File a, File b) {
    try {
      return a == null ? b == null : b != null && eq(a.getCanonicalPath(), b.getCanonicalPath());
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean directoryIsEmpty(File f) {
    return !fileExists(f) || isDirectory(f) && empty(listFiles(f));
  }

  static public void copyAllFilesInDirectory_rec_noOverwrite(File src, File dest) {
    try {
      print("Listing " + f2s(src));
      for (File f : listFiles(src)) {
        print("Copying " + f2s(f));
        File destFile = newFile(dest, f.getName());
        if (fileExists(destFile))
          throw fail("Won't overwrite " + f2s(destFile) + " with contents of " + f2s(f));
        if (isSymLink(f))
          Files.createLink(fileToPath(destFile), fileToPath(f).toRealPath());
        else if (isFile(f))
          copyFile(f, destFile);
        else if (isDirectory(f)) {
          mkdirs(destFile);
          copyAllFilesInDirectory_rec_noOverwrite(f, newFile(dest, f.getName()));
        }
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean deleteFiles(File... files) {
    return deleteFiles(asList(files));
  }

  static public boolean deleteFiles(List<File> files) {
    boolean b = false;
    for (File f : unnull(files)) if (deleteFile(f))
      b = true;
    return b;
  }

  static public List<File> conceptBackupFiles(String progID) {
    Pattern pat = Pattern.compile("^(.*)\\.backup(20\\d\\d)(\\d\\d)(\\d\\d)-(\\d\\d)$");
    File dir = programDir(progID);
    List<File> l = new ArrayList();
    for (File f : listFilesNotDirs(dir, newFile(dir, "backups"))) {
      String s = f.getName();
      Matcher matcher = pat.matcher(s);
      {
        if (!(matcher.find()))
          continue;
      }
      String originalName = matcher.group(1);
      {
        if (!(eq(originalName, "concepts.structure.gz")))
          continue;
      }
      l.add(f);
    }
    return l;
  }

  static public String dbProgramID() {
    return getDBProgramID();
  }

  static public void thinAProgramsBackups(String progID, boolean doIt) {
    List<File> files = new ArrayList();
    Map<File, Double> ageMap = new HashMap();
    Pattern pat = Pattern.compile("^(.*)\\.backup(20\\d\\d)(\\d\\d)(\\d\\d)-(\\d\\d)$");
    File dir = programDir(progID);
    for (File f : listFilesNotDirs(dir, newFile(dir, "backups"))) {
      String s = f.getName();
      Matcher matcher = pat.matcher(s);
      {
        if (!(matcher.find()))
          continue;
      }
      String originalName = matcher.group(1);
      {
        if (!(eq(originalName, "concepts.structure.gz")))
          continue;
      }
      int year = matcherInt(matcher, 2);
      int month = matcherInt(matcher, 3);
      int day = matcherInt(matcher, 4);
      int hour = matcherInt(matcher, 5);
      long time = timestampFromYMDH(year, month, day, hour);
      double age = ((now() - time) / 1000.0 / 60 / 60 / 24);
      ageMap.put(f, age);
      files.add(f);
    }
    int numDeleted = 0;
    sortByMap_inPlace(files, ageMap);
    double lastAge = -1;
    for (File f : files) {
      double age = ageMap.get(f);
      if (!thinAProgramsBackups_shouldKeep(age, lastAge)) {
        ++numDeleted;
        if (doIt) {
          print("Deleting: " + f);
          f.delete();
        }
      } else {
        lastAge = age;
      }
    }
    if (numDeleted != 0)
      print((doIt ? "Deleted: " : "Would delete: ") + n(numDeleted, "file"));
  }

  static public boolean thinAProgramsBackups_shouldKeep(double age, double lastAge) {
    return defaultAgeBasedBackupRetentionStrategy_shouldKeep(age, lastAge);
  }

  static public 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> Pair<A, Boolean> uniq2(Class<A> c, Object... params) {
    return uniq2(db_mainConcepts(), c, params);
  }

  static public <A extends Concept> Pair<A, Boolean> uniq2(Concepts cc, Class<A> c, Object... params) {
    params = expandParams(c, params);
    A x = findConceptWhere(c, params);
    if (x == null) {
      x = unlisted(c);
      csetAll(x, params);
      cc.register(x);
      return pair(x, true);
    }
    return pair(x, false);
  }

  static public PKIKeyPair pkiKeyPairFromTwoLineFile(File f) {
    List<String> l = tlft(loadTextFile(f));
    if (l(l) == 2)
      return new PKIKeyPair(second(l), first(l));
    return null;
  }

  static public File agiBot_trustedKeyForMachine_file() {
    return javaxSecretDir("agi.blue-trusted-key-pair.txt");
  }

  static public java.util.Timer doEveryStartingNow(int delay, Object r) {
    return doEvery(delay, 0, r);
  }

  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);
    throw fail("woot not int: " + getClassName(o));
  }

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

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

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

  static public String replacePrefix(String prefix, String replacement, String s) {
    if (!startsWith(s, prefix))
      return s;
    return replacement + substring(s, l(prefix));
  }

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

  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 String programID;

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

  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 void lockOrFail(Lock lock, long timeout) {
    try {
      ping();
      if (!lock.tryLock(timeout, TimeUnit.MILLISECONDS)) {
        String s = "Couldn't acquire lock after " + timeout + " ms.";
        if (lock instanceof ReentrantLock) {
          ReentrantLock l = (ReentrantLock) lock;
          s += " Hold count: " + l.getHoldCount() + ", owner: " + call(l, "getOwner");
        }
        throw fail(s);
      }
      ping();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static public void assertTrue(Object o) {
    if (!(eq(o, true)))
      throw fail(str(o));
  }

  static public boolean assertTrue(String msg, boolean b) {
    if (!b)
      throw fail(msg);
    return b;
  }

  static public boolean assertTrue(boolean b) {
    if (!b)
      throw fail("oops");
    return b;
  }

  static public double toDouble(Object o) {
    if (o instanceof Number)
      return ((Number) o).doubleValue();
    if (o instanceof BigInteger)
      return ((BigInteger) o).doubleValue();
    if (o == null)
      return 0.0;
    throw fail(o);
  }

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

  static public <A extends Concept> A findConceptWhereCI(Concepts concepts, Class<A> c, Object... params) {
    params = expandParams(c, params);
    if (concepts.ciFieldIndices != null)
      for (int i = 0; i < l(params); i += 2) {
        IFieldIndex<A, Object> index = concepts.getCIFieldIndex(c, (String) params[i]);
        if (index != null) {
          for (A x : index.getAll(params[i + 1])) if (checkConceptFieldsIC(x, params))
            return x;
          return null;
        }
      }
    for (A x : concepts.list(c)) if (checkConceptFieldsIC(x, params))
      return x;
    return null;
  }

  static public Concept findConceptWhereCI(Concepts concepts, String c, Object... params) {
    for (Concept x : concepts.list(c)) if (checkConceptFieldsIC(x, params))
      return x;
    return null;
  }

  static public ALQLLine agiBlue_parseQueryLine(String s) {
    List<String> tok = javaTokWithBrackets(s);
    if (eqGet(tok, 1, "return") && isIdentifier(get(tok, 3))) {
      List<String> l = tok_splitAtComma(subList(tok, 2));
      if (l(l) == 1)
        return new ALQLReturn(first(l));
      else
        return new ALQLReturnTuple(l);
    }
    T3<String, String, String> t = agiBlue_parseTriple(tok);
    if (t != null)
      return new ALQLTriple(t);
    if (lCodeTokens(tok) == 2 && eqGet(tok, 1, "lock")) {
      t = agiBlue_parseTriple(uncurly(tok.get(3)));
      if (t == null)
        throw fail("Bad lock statement: " + s);
      return new ALQLLockStatement(t);
    }
    if (lCodeTokens(tok) == 2 && eqGet(tok, 1, "page")) {
      String page = uncurly(tok.get(3));
      String method = containsDollarVars(page) ? "flexMatchDollarVarsIC_first" : "eqic";
      return new ALQLPage(page, method);
    }
    if (lCodeTokens(tok) == 3 && eqGet(tok, 1, "slice")) {
      String slice = unquote(tok.get(3));
      String contents = uncurly(tok.get(5));
      return new ALQLSlice(slice, agiBlue_parseQueryScript(print("contents", contents)));
    }
    throw fail("Can't parse ALQL line: " + s);
  }

  static public List<String> tlftj_honoringBrackets(String s) {
    List<String> tok = javaTokWithBrackets(javaDropComments(s));
    List<String> out = new ArrayList();
    int j = 1;
    for (int i = 2; i + 1 < l(tok); i += 2) if (containsNewLine(tok.get(i))) {
      addIfNempty(out, joinSubList(tok, j, i));
      j = i + 1;
    }
    if (j < l(tok) - 1)
      addIfNempty(out, joinSubList(tok, j, l(tok) - 1));
    return out;
  }

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

  static public <A, B, C> T3<A, B, C> triple(A a, B b, C c) {
    return new T3(a, b, c);
  }

  static public boolean isJavaIdentifierAfter(String s, int i) {
    int n = l(s);
    if (i >= n || !Character.isJavaIdentifierStart(s.charAt(i)))
      return false;
    for (i++; i < n; i++) if (!Character.isJavaIdentifierPart(s.charAt(i)))
      return false;
    return true;
  }

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

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

  static public <A extends Concept> List<A> findConceptsWhereCI(Concepts concepts, Class<A> c, Object... params) {
    params = expandParams(c, params);
    if (concepts.ciFieldIndices != null)
      for (int i = 0; i < l(params); i += 2) {
        IFieldIndex<A, Object> index = concepts.getCIFieldIndex(c, (String) params[i]);
        if (index != null) {
          List<A> rawList = index.getAll(params[i + 1]);
          params = dropEntryFromParams(params, i);
          if (params == null)
            return rawList;
          List<A> l = new ArrayList();
          for (A x : rawList) if (checkConceptFieldsIC(x, params))
            l.add(x);
          return l;
        }
      }
    return filterConceptsIC(concepts.list(c), params);
  }

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

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

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

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

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

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

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

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

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

  static public String optionalCurlyBrace(String s) {
    return isCurlyBraced(s) ? s : curlyBrace(s);
  }

  static public String htmlQuery(Map params) {
    return empty(params) ? "" : "?" + makePostData(params);
  }

  static public String htmlQuery(Object... data) {
    return empty(data) ? "" : "?" + makePostData(data);
  }

  static public <A, B> Map<A, B> mapPutOrCreate(Map<A, B> map, A key, B value) {
    if (key != null && value != null) {
      if (map == null)
        map = new HashMap();
      map.put(key, value);
    }
    return map;
  }

  static public <A, B> List<A> cloneKeys(Map<A, B> map) {
    return cloneList(keys(map));
  }

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

  static public Class<?> hotwire(String src) {
    assertFalse(_inCore());
    Class j = getJavaX();
    if (isAndroid()) {
      synchronized (j) {
        List<File> libraries = new ArrayList<File>();
        File srcDir = (File) call(j, "transpileMain", src, libraries);
        if (srcDir == null)
          throw fail("transpileMain returned null (src=" + quote(src) + ")");
        Object androidContext = get(j, "androidContext");
        return (Class) call(j, "loadx2android", srcDir, src);
      }
    } else {
      return hotwire_overInternalBot(src);
    }
  }

  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 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)
        map.putAll(((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 String[] asStringArray(Collection<String> c) {
    return toStringArray(c);
  }

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

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

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

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

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

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

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

  static public boolean checkFieldsIC(Object x, Object... data) {
    for (int i = 0; i < l(data); i += 2) if (!eqicOrEq(getOpt(x, (String) data[i]), data[i + 1]))
      return false;
    return true;
  }

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

  static public boolean regexpMatchesIC(String pat, String s) {
    return regexpICMatches(pat, s);
  }

  static public boolean regexpMatchesIC(Pattern pat, String s) {
    return regexpICMatches(pat, s);
  }

  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 boolean isAbsoluteURL(String s) {
    return contains(s, "://");
  }

  static public String hostNameFromURL(String url) {
    try {
      return new URL(url).getHost();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isAGIBlueDomain(String domain) {
    return domainIsUnder(domain, theAGIBlueDomain());
  }

  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 theAGIBlueDomain() {
    return "agi.blue";
  }

  static public int maximumDomainPartLength() {
    return 63;
  }

  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 Map<String, String> paramsFromURL(String url) {
    return decodeHQuery(getQueryFromURL(url));
  }

  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 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;
    if (x >= s.length())
      return "";
    if (y < x)
      y = x;
    if (y > s.length())
      y = s.length();
    return s.substring(x, y);
  }

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

  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 mainBot;

  static public Object getMainBot() {
    return mainBot;
  }

  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 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;
    m.m = new String[] { substring(a, 0, l(a) - l(b)) };
    return true;
  }

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

  static public Map<String, String> subBot_getHttpFiles() {
    Object session = call(getMainBot(), "getSession");
    return (Map<String, String>) call(session, "getFiles");
  }

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

  static public <A> A callOpt(Object o, String method, Object... args) {
    return (A) callOpt_withVarargs(o, method, args);
  }

  static public Object getBot(String botID) {
    return callOpt(getMainBot(), "getBot", botID);
  }

  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 boolean possibleGlobalID(String s) {
    return l(s) == globalIDLength() && allLowerCaseCharacters(s);
  }

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

  static public String assertPossibleGlobalID(String s) {
    if (!possibleGlobalID(s))
      throw fail("Not an acceptable global ID: " + s);
    return s;
  }

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

  static public void printStructure(String prefix, Object o) {
    if (endsWithLetter(prefix))
      prefix += ": ";
    print(prefix + structureForUser(o));
  }

  static public void printStructure(Object o) {
    print(structureForUser(o));
  }

  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 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 MultiMap<String, String> decodeHQueryToMultiMap(String query) {
    MultiMap<String, String> map = new MultiMap();
    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 unpackAGIDomainOpt(String s) {
    return or(unpackAGIDomain(s), s);
  }

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

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

  static public Object collectionMutex(List l) {
    return l;
  }

  static public Object collectionMutex(Object o) {
    if (o instanceof List)
      return o;
    String c = className(o);
    if (eq(c, "java.util.TreeMap$KeySet"))
      c = className(o = getOpt(o, "m"));
    else if (eq(c, "java.util.HashMap$KeySet"))
      c = className(o = get_raw(o, "this$0"));
    if (eqOneOf(c, "java.util.TreeMap$AscendingSubMap", "java.util.TreeMap$DescendingSubMap"))
      c = className(o = get_raw(o, "m"));
    return o;
  }

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

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

  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 htmlencode(Object o) {
    return htmlencode(str(o));
  }

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

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

  static public Object[] concatArrays(Object[]... arrays) {
    int l = 0;
    for (Object[] a : arrays) l += l(a);
    Object[] x = new Object[l];
    int i = 0;
    for (Object[] a : arrays) if (a != null) {
      System.arraycopy(a, 0, x, i, l(a));
      i += l(a);
    }
    return x;
  }

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

  static public String nemptyLines(Iterable l) {
    return lines(nempties(allToString(l)));
  }

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

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

  static public boolean isSquareBracketed(String s) {
    return s != null && s.startsWith("[") && s.endsWith("]");
  }

  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 deSquareBracket(String s) {
    if (startsWith(s, "[") && endsWith(s, "]"))
      return substring(s, 1, l(s) - 1);
    return s;
  }

  static public int maxIntValue() {
    return Integer.MAX_VALUE;
  }

  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 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 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 in " + c);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int longToInt_clip(long l) {
    return l > Integer.MAX_VALUE ? Integer.MAX_VALUE : l < Integer.MIN_VALUE ? Integer.MIN_VALUE : (int) l;
  }

  static public List similarEmptyList(Collection m) {
    return new ArrayList();
  }

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

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

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

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

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

  static public String spaced(String s) {
    return " " + unnull(s) + " ";
  }

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

  static public double fraction(double d) {
    return d % 1;
  }

  static public String n_fancy2(long l, String singular, String plural) {
    return formatWithThousandsSeparator(l) + " " + trim(l == 1 ? singular : plural);
  }

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

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

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

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

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

  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 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 <A> A vmBus_timerStarted(A timer) {
    vmBus_send("timerStarted", timer, costCenter());
    return timer;
  }

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

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

  static public void pcallFAll(Iterator it, Object... args) {
    while (it.hasNext()) pcallF(it.next(), args);
  }

  static public Set vm_busListeners_live_cache;

  static public Set vm_busListeners_live() {
    if (vm_busListeners_live_cache == null)
      vm_busListeners_live_cache = vm_busListeners_live_load();
    return vm_busListeners_live_cache;
  }

  static public Set vm_busListeners_live_load() {
    return vm_generalIdentityHashSet("busListeners");
  }

  static public Map<String, Set> vm_busListenersByMessage_live_cache;

  static public Map<String, Set> vm_busListenersByMessage_live() {
    if (vm_busListenersByMessage_live_cache == null)
      vm_busListenersByMessage_live_cache = vm_busListenersByMessage_live_load();
    return vm_busListenersByMessage_live_cache;
  }

  static public Map<String, Set> vm_busListenersByMessage_live_load() {
    return vm_generalHashMap("busListenersByMessage");
  }

  static public 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 boolean isTrue(Object o) {
    if (o instanceof Boolean)
      return ((Boolean) o).booleanValue();
    if (o == null)
      return false;
    if (o instanceof ThreadLocal)
      return isTrue(((ThreadLocal) o).get());
    throw fail(getClassName(o));
  }

  static public Map<String, java.util.regex.Pattern> compileRegexpIC_cache = syncMRUCache(10);

  static public java.util.regex.Pattern compileRegexpIC(String pat) {
    java.util.regex.Pattern p = compileRegexpIC_cache.get(pat);
    if (p == null) {
      try {
        compileRegexpIC_cache.put(pat, p = java.util.regex.Pattern.compile(pat, Pattern.CASE_INSENSITIVE));
      } catch (PatternSyntaxException e) {
        throw rethrow(wrapPatternSyntaxException(e));
      }
    }
    return p;
  }

  static public boolean regexpICFind(Pattern pat, String s) {
    return regexpIC(pat, s).find();
  }

  static public boolean regexpICFind(String pat, String s) {
    return regexpIC(pat, s).find();
  }

  static public String fullTrimLastLine(String s) {
    return trimLastLine(rtrim(s));
  }

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

  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 <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(SortedSet<A> l) {
    return l == null ? null : l.last();
  }

  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 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 String[] dropLast(String[] a, int n) {
    n = Math.min(n, a.length);
    String[] b = new String[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 String dropPrefixMandatory(String prefix, String s) {
    if (s.startsWith(prefix))
      return s.substring(prefix.length());
    else
      throw fail("Prefix " + prefix + " not found in: " + s);
  }

  static public byte[] toUtf8(String s) {
    try {
      return s.getBytes("UTF-8");
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String dropLastLine(String s) {
    s = dropSuffix("\r", dropSuffix("\n", s));
    int i = s.lastIndexOf('\n');
    return i < 0 ? "" : dropSuffix("\r", substring(s, 0, i));
  }

  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 boolean jsonDecode_useOrderedMaps = true;

  static public Object jsonDecode(final String text) {
    final List<String> tok = jsonTok(text);
    if (l(tok) == 1)
      return null;
    class Y {

      public int i = 1;

      public Object parse() {
        String t = tok.get(i);
        if (t.startsWith("\"")) {
          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)) {
          i += 2;
          if (eq(get(tok, i), ".")) {
            String x = t + "." + get(tok, i + 2);
            i += 4;
            double d = parseDouble(x);
            if (minus)
              d = -d;
            return d;
          } else {
            long l = parseLong(t);
            if (minus)
              l = -l;
            return l != (int) l ? new Long(l) : new Integer((int) l);
          }
        }
        throw new RuntimeException("Unknown token " + (i + 1) + ": " + t + ": " + text);
      }

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

      public Object parseMap() {
        consume("{");
        Map map = jsonDecode_useOrderedMaps ? new LinkedHashMap() : new TreeMap();
        while (!tok.get(i).equals("}")) {
          String key = unquote(tok.get(i));
          i += 2;
          consume(":");
          Object value = parse();
          map.put(key, value);
          if (tok.get(i).equals(","))
            i += 2;
        }
        consume("}");
        return map;
      }

      public void consume(String s) {
        if (!tok.get(i).equals(s)) {
          String prevToken = i - 2 >= 0 ? tok.get(i - 2) : "";
          String nextTokens = join(tok.subList(i, Math.min(i + 4, tok.size())));
          throw fail(quote(s) + " expected: " + prevToken + " " + nextTokens + " (" + i + "/" + tok.size() + ")");
        }
        i += 2;
      }
    }
    return new Y().parse();
  }

  static public String fastJoin(List<String> l) {
    if (empty(l))
      return "";
    int n = 0;
    for (String s : l) n += s.length();
    char[] buf = new char[n];
    n = 0;
    for (String s : l) {
      int x = s.length();
      s.getChars(0, x, buf, n);
      n += x;
    }
    return new String(buf);
  }

  static public List<String> wordTok_plusAsterisk(String s) {
    return javaTokNPunctuationWithBrackets_plusAsterisk_cached(s);
  }

  static public List<List<String>> positionalTokenIndex2_filter(PositionalTokenIndex2 idx, List<String> tok) {
    PositionalTokenIndex idx2 = idx.indexForTokenCount(l(tok) / 2);
    if (idx2 == null)
      return null;
    return positionalTokenIndex_filter(idx2, tok);
  }

  static public int countAsteriskTokens(List<String> tok) {
    int count = 0, n = l(tok);
    for (int i = 1; i < n; i += 2) if (eq(tok.get(i), "*"))
      ++count;
    return count;
  }

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

  static public <A> int indexOf(List<A> l, A a, int startIndex) {
    if (l == null)
      return -1;
    int n = l(l);
    for (int i = startIndex; i < n; i++) if (eq(l.get(i), a))
      return i;
    return -1;
  }

  static public <A> int indexOf(List<A> l, int startIndex, A a) {
    return indexOf(l, a, startIndex);
  }

  static public <A> int indexOf(List<A> l, A a) {
    if (l == null)
      return -1;
    return l.indexOf(a);
  }

  static public int indexOf(String a, String b) {
    return a == null || b == null ? -1 : a.indexOf(b);
  }

  static public int indexOf(String a, String b, int i) {
    return a == null || b == null ? -1 : a.indexOf(b, i);
  }

  static public int indexOf(String a, char b) {
    return a == null ? -1 : a.indexOf(b);
  }

  static public int indexOf(String a, int i, char b) {
    return indexOf(a, b, i);
  }

  static public int indexOf(String a, char b, int i) {
    return a == null ? -1 : a.indexOf(b, i);
  }

  static public int indexOf(String a, int i, String b) {
    return a == null || b == null ? -1 : a.indexOf(b, i);
  }

  static public <A> int indexOf(A[] x, A a) {
    int n = l(x);
    for (int i = 0; i < n; i++) if (eq(x[i], a))
      return i;
    return -1;
  }

  static public <A> List<A> pairToList(Pair<A, A> p) {
    return p == null ? null : ll(p.a, p.b);
  }

  static public long ratio(long x, long y) {
    return y == 0 ? 0 : x / y;
  }

  static public double ratio(double x, double y) {
    return y == 0 ? 0 : x / y;
  }

  static volatile public PersistableThrowable lastException_lastException;

  static public PersistableThrowable lastException() {
    return lastException_lastException;
  }

  static public void lastException(Throwable e) {
    lastException_lastException = persistableThrowable(e);
  }

  static public 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 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)=[^&\\s\"]*", "$1$2=<hidden>");
  }

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

  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) ? s : prefix + s;
  }

  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 TreeMap litCIMap(Object... x) {
    TreeMap map = caseInsensitiveMap();
    litmap_impl(map, x);
    return map;
  }

  static public File userDir() {
    return new File(userHome());
  }

  static public File userDir(String path) {
    return new File(userHome(), path);
  }

  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 List<String> sortedIgnoreCase(Collection<String> c) {
    List<String> l = cloneList(c);
    Collections.sort(l, caseInsensitiveComparator());
    return l;
  }

  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> 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 class getOpt_Map extends WeakHashMap {

    public getOpt_Map() {
      if (getOpt_special == null)
        getOpt_special = new HashMap();
      clear();
    }

    public void clear() {
      super.clear();
      put(Class.class, getOpt_special);
      put(String.class, getOpt_special);
    }
  }

  static final public Map<Class, HashMap<String, Field>> getOpt_cache = _registerDangerousWeakMap(synchroMap(new getOpt_Map()));

  static public HashMap getOpt_special;

  static public Object getOpt_cached(Object o, String field) {
    try {
      if (o == null)
        return null;
      Class c = o.getClass();
      HashMap<String, Field> map;
      synchronized (getOpt_cache) {
        map = getOpt_cache.get(c);
        if (map == null)
          map = getOpt_makeCache(c);
      }
      if (map == getOpt_special) {
        if (o instanceof Class)
          return getOpt((Class) o, field);
        if (o instanceof Map)
          return ((Map) o).get(field);
      }
      Field f = map.get(field);
      if (f != null)
        return f.get(o);
      if (o instanceof DynamicObject)
        return mapGet2(((DynamicObject) o).fieldValues, field);
      return null;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public HashMap<String, Field> getOpt_makeCache(Class c) {
    HashMap<String, Field> map;
    if (isSubtypeOf(c, Map.class))
      map = getOpt_special;
    else {
      map = new HashMap();
      if (!reflection_classesNotToScan().contains(c.getName())) {
        Class _c = c;
        do {
          for (Field f : _c.getDeclaredFields()) {
            makeAccessible(f);
            String name = f.getName();
            if (!map.containsKey(name))
              map.put(name, f);
          }
          _c = _c.getSuperclass();
        } while (_c != null);
      }
    }
    if (getOpt_cache != null)
      getOpt_cache.put(c, map);
    return map;
  }

  static public Object 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 yesno(boolean b) {
    return yesno((Boolean) b);
  }

  static public String yesno(Boolean b) {
    return eq(b, true) ? "Yes. " : eq(b, false) ? "No. " : "Unknown. ";
  }

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

  static public int defaultStringTransformerCacheSize() {
    return 1000;
  }

  static public String words2_spaces(String s) {
    return joinWithSpace(words2(s));
  }

  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 String words2_spaces_collapse(String s) {
    return collapseString(words2_spaces(s));
  }

  static public <A, B> Map<A, B> newWeakHashMap() {
    return _registerWeakMap(synchroMap(new WeakHashMap()));
  }

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

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

  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 boolean equalsIgnoreCase(String a, String b) {
    return eqic(a, b);
  }

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

  static public <A, B> List<A> keysSortedByValues(final Map<A, B> map) {
    List<A> l = new ArrayList(map.keySet());
    sort(l, mapComparator(map));
    return l;
  }

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

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

  static public String loadLocalSnippet(String snippetID) {
    return loadLocalSnippet(psI(snippetID));
  }

  static public String loadLocalSnippet(long snippetID) {
    return loadTextFile(localSnippetFile(snippetID));
  }

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

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

  static public String fsI(long id) {
    return formatSnippetID(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 String standardCredentials() {
    String user = standardCredentialsUser();
    String pass = standardCredentialsPass();
    if (nempty(user) && nempty(pass))
      return "&_user=" + urlencode(user) + "&_pass=" + urlencode(pass);
    return "";
  }

  static public String loadTextFile(String fileName) {
    return loadTextFile(fileName, null);
  }

  static public String loadTextFile(File f, String defaultContents) {
    try {
      checkFileNotTooBigToRead(f);
      if (f == null || !f.exists())
        return defaultContents;
      FileInputStream fileInputStream = new FileInputStream(f);
      InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");
      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 getGlobalCache() {
    File file = new File(javaxCachesDir(), "Binary Snippets");
    file.mkdirs();
    return file;
  }

  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 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();

  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 (url.getProtocol().equals("https"))
        disableCertificateValidation();
      if (!networkAllowanceTest(str(url)))
        throw fail("Not allowed: " + url);
      IOException e = null;
      for (int tries = 0; tries < loadPage_retries; tries++) try {
        URLConnection con = loadPage_openConnection(url);
        return loadPage(con, url);
      } catch (IOException _e) {
        e = _e;
        if (loadPageThroughProxy_enabled) {
          print("Trying proxy because of: " + e);
          try {
            return loadPageThroughProxy(str(url));
          } catch (Throwable e2) {
            print("  " + exceptionToStringShort(e2));
          }
        } else if (loadPage_debug)
          print(exceptionToStringShort(e));
        if (tries < loadPage_retries - 1)
          sleepSeconds(1);
      }
      throw e;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String loadPage_preprocess(String url) {
    if (url.startsWith("tb/"))
      url = tb_mainServer() + "/" + url;
    if (url.indexOf("://") < 0)
      url = "http://" + url;
    return url;
  }

  static public String loadPage(String url) {
    try {
      url = loadPage_preprocess(url);
      if (!isTrue(loadPage_silent.get()))
        printWithTime("Loading: " + hideCredentials(url));
      return loadPageSilently(new URL(url));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String loadPage(URL url) {
    return loadPage(url.toExternalForm());
  }

  static public String loadPage(URLConnection con, URL url) throws IOException {
    return loadPage(con, url, true);
  }

  static public String loadPage(URLConnection con, URL url, boolean addHeaders) throws IOException {
    Map<String, String> extraHeaders = getAndClearThreadLocal(loadPage_extraHeaders);
    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 (true) {
        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 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);
    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 int iceil(double d) {
    return (int) Math.ceil(d);
  }

  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 void moveFile(File a, File b) {
    if (!renameFile(a, b))
      throw fail("File move failed: " + a + " to " + b);
  }

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

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

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

  static public long elapsedMS(long time) {
    ping();
    return sysNow() - time;
  }

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

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

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

  static public String hSilentComputator() {
    return hSilentComputator(hSilentComputator_defaultURI());
  }

  static public String hSilentComputator(String wsUri) {
    return hSilentComputator(wsUri, "");
  }

  static public String hSilentComputator(String wsUri, String flag) {
    if (nempty(flag))
      wsUri = addSlash(wsUri) + flag;
    return div("Calculating", "id", "calcing") + hcss("#calcing {\r\nposition: fixed;\r\nwidth: 100%;\r\nheight: 100vh;\r\nz-index: 9999;\r\nvisibility: hidden;\r\n}") + hMakeComputerID() + hreconnectingWebSockets() + hjavascript("\r\n      function sendPing() {\r\n        ${PINGCMD}\r\n      }\r\n      \r\n      var working = false;\r\n      var benchResultl;\r\n      var ws = new ReconnectingWebSocket(\"${URI}\");\r\n      ws.onopen = function(event) {\r\n        console.log(\"WebSocket opened.\");\r\n      };\r\n      ws.onmessage = function(event) {\r\n        var d = event.data;\r\n        while (d.length > 0 && d.charCodeAt(d.length-1) == 0)\r\n          d = d.substring(0, d.length-1);\r\n        console.log(\"Evaluating: \" + d);\r\n        var geval = eval; // use global scope\r\n        geval(d);\r\n        console.log(\"Evaluated.\");\r\n      };\r\n      \r\n      //working = true; // XXX\r\n      //console.log(\"Eval test: \" + eval('working'));\r\n  ".replace("${URI}", wsUri).replace("${PINGCMD}", nodes_pingCmd()));
  }

  static public String hSilentComputator_defaultURI() {
    int port = subBot_currentPort();
    return (subBot_isHttps() ? "wss://" : "ws://") + domain() + (port == 80 ? "" : ":" + port) + "/";
  }

  static public boolean nemptyString(String s) {
    return s != null && s.length() > 0;
  }

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

  static public int listL(Collection l) {
    return l == null ? 0 : l.size();
  }

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

  static public String formatDouble(double d, int digits) {
    String format = digits <= 0 ? "0" : "0." + rep(digits, '#');
    return new java.text.DecimalFormat(format, new java.text.DecimalFormatSymbols(Locale.ENGLISH)).format(d);
  }

  static public double toM_double(long l) {
    return l / (1024 * 1024.0);
  }

  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 <B> TreeMap<String, B> asCaseInsensitiveMap(Map<String, B> map) {
    if (isCIMap(map))
      return (TreeMap) map;
    TreeMap<String, B> m = ciMap();
    m.putAll(map);
    return m;
  }

  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 Class<?> _getClass(String name) {
    try {
      return Class.forName(name);
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static public Class _getClass(Object o) {
    return o == null ? null : o instanceof Class ? (Class) o : o.getClass();
  }

  static public Class _getClass(Object realm, String name) {
    try {
      return getClass(realm).getClassLoader().loadClass(classNameToVM(name));
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static public List<String> onlyClassNamesThatExist(List<String> l) {
    List<String> out = new ArrayList();
    for (String s : l) if (hasClass(s))
      out.add(s);
    return out;
  }

  static public List<String> prependAll(final String s, Collection<String> l) {
    return map(new F1<String, String>() {

      public String get(String x) {
        try {
          return s + x;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "s + x";
      }
    }, l);
  }

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

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

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

  static public long guessClusteredDirSize(File dir, Object... __) {
    Object pred = optPar("pred", __);
    long n = 0;
    long clusterSize = assumedClusterSize();
    for (File f : pred == null ? findAllFiles_noDirs(dir) : findAllFiles_noDirs_pred(dir, pred)) n += roundUpTo(clusterSize, f.length());
    return n;
  }

  static public long guessClusteredDirSize() {
    return guessClusteredDirSize(programDir());
  }

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

  static volatile public String caseID_caseID;

  static public String caseID() {
    return caseID_caseID;
  }

  static public void caseID(String id) {
    caseID_caseID = id;
  }

  public static String bytesToHex(byte[] bytes) {
    return bytesToHex(bytes, 0, bytes.length);
  }

  public static String bytesToHex(byte[] bytes, int ofs, int len) {
    StringBuilder stringBuilder = new StringBuilder(len * 2);
    for (int i = 0; i < len; i++) {
      String s = "0" + Integer.toHexString(bytes[ofs + i]);
      stringBuilder.append(s.substring(s.length() - 2, s.length()));
    }
    return stringBuilder.toString();
  }

  static public boolean md5OfFile_verbose = false;

  static public String md5OfFile(String path) {
    return md5OfFile(newFile(path));
  }

  static public String md5OfFile(File f) {
    try {
      if (!f.exists())
        return "-";
      if (md5OfFile_verbose)
        print("Getting MD5 of " + f);
      MessageDigest md5 = MessageDigest.getInstance("MD5");
      FileInputStream in = new FileInputStream(f);
      try {
        byte[] buf = new byte[65536];
        int l;
        while (true) {
          l = in.read(buf);
          if (l <= 0)
            break;
          md5.update(buf, 0, l);
        }
        return bytesToHex(md5.digest());
      } finally {
        _close(in);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public 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 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 setOpt_raw(Object o, String field, Object value) {
    try {
      if (o == null)
        return;
      if (o instanceof Class)
        setOpt_raw((Class) o, field, value);
      else {
        Field f = setOpt_raw_findField(o.getClass(), field);
        if (f != null) {
          makeAccessible(f);
          smartSet(f, o, value);
        }
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void setOpt_raw(Class c, String field, Object value) {
    try {
      if (c == null)
        return;
      Field f = setOpt_raw_findStaticField(c, field);
      if (f != null) {
        makeAccessible(f);
        smartSet(f, null, value);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Field setOpt_raw_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);
    return null;
  }

  static public Field setOpt_raw_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);
    return null;
  }

  static public void smartSet(Field f, Object o, Object value) throws Exception {
    try {
      f.set(o, value);
    } catch (Exception e) {
      Class type = f.getType();
      if (type == int.class && value instanceof Long)
        value = ((Long) value).intValue();
      if (type == LinkedHashMap.class && value instanceof Map) {
        f.set(o, asLinkedHashMap((Map) value));
        return;
      }
      try {
        if (f.getType() == Concept.Ref.class) {
          f.set(o, ((Concept) o).new Ref((Concept) value));
          return;
        }
        if (o instanceof Concept.Ref) {
          f.set(o, ((Concept.Ref) o).get());
          return;
        }
      } catch (Throwable _e) {
      }
      throw e;
    }
  }

  static public <A extends DynamicObject> A setDyn(A o, String key, Object value) {
    if (o == null)
      return o;
    setDynObjectValue(o, key, value);
    return o;
  }

  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 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;
  }

  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 String getDBProgramID_id;

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

  static public Object _defaultClassFinder_value = defaultDefaultClassFinder();

  static public Object _defaultClassFinder() {
    return _defaultClassFinder_value;
  }

  static public <A, B> Map<A, B> newDangerousWeakHashMap() {
    return _registerDangerousWeakMap(synchroMap(new WeakHashMap()));
  }

  static public <A, B> Map<A, B> newDangerousWeakHashMap(Object initFunction) {
    return _registerDangerousWeakMap(synchroMap(new WeakHashMap()), initFunction);
  }

  static public HashMap<String, List<Method>> callMC_cache = new HashMap();

  static public String callMC_key;

  static public Method callMC_value;

  static public Object callMC(String method, String[] arg) {
    return callMC(method, new Object[] { arg });
  }

  static public Object callMC(String method, Object... args) {
    try {
      Method me;
      if (callMC_cache == null)
        callMC_cache = new HashMap();
      synchronized (callMC_cache) {
        me = method == callMC_key ? callMC_value : null;
      }
      if (me != null)
        try {
          return invokeMethod(me, null, args);
        } catch (IllegalArgumentException e) {
          throw new RuntimeException("Can't call " + me + " with arguments " + classNames(args), e);
        }
      List<Method> m;
      synchronized (callMC_cache) {
        m = callMC_cache.get(method);
      }
      if (m == null) {
        if (callMC_cache.isEmpty()) {
          callMC_makeCache();
          m = callMC_cache.get(method);
        }
        if (m == null)
          throw fail("Method named " + method + " not found in main");
      }
      int n = m.size();
      if (n == 1) {
        me = m.get(0);
        synchronized (callMC_cache) {
          callMC_key = method;
          callMC_value = me;
        }
        try {
          return invokeMethod(me, null, args);
        } catch (IllegalArgumentException e) {
          throw new RuntimeException("Can't call " + me + " with arguments " + classNames(args), e);
        }
      }
      for (int i = 0; i < n; i++) {
        me = m.get(i);
        if (call_checkArgs(me, args, false))
          return invokeMethod(me, null, args);
      }
      throw fail("No method called " + method + " with arguments (" + joinWithComma(getClasses(args)) + ") found in main");
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void callMC_makeCache() {
    synchronized (callMC_cache) {
      callMC_cache.clear();
      Class _c = (Class) mc(), c = _c;
      while (c != null) {
        for (Method m : c.getDeclaredMethods()) if ((m.getModifiers() & java.lang.reflect.Modifier.STATIC) != 0) {
          makeAccessible(m);
          multiMapPut(callMC_cache, m.getName(), m);
        }
        c = c.getSuperclass();
      }
    }
  }

  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 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 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 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);
    }
  }

  static public File copyFile(File src, File dest) {
    try {
      FileInputStream inputStream = new FileInputStream(src.getPath());
      FileOutputStream outputStream = newFileOutputStream(dest.getPath());
      try {
        copyStream(inputStream, outputStream);
        inputStream.close();
      } finally {
        outputStream.close();
      }
      return dest;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public FileOutputStream newFileOutputStream(File path) throws IOException {
    return newFileOutputStream(path.getPath());
  }

  static public FileOutputStream newFileOutputStream(String path) throws IOException {
    return newFileOutputStream(path, false);
  }

  static public FileOutputStream newFileOutputStream(File path, boolean append) throws IOException {
    return newFileOutputStream(path.getPath(), append);
  }

  static public FileOutputStream newFileOutputStream(String path, boolean append) throws IOException {
    mkdirsForFile(path);
    FileOutputStream f = new FileOutputStream(path, append);
    _registerIO(f, path, true);
    return f;
  }

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

  static public Object[] dropEntryFromParams(Object[] params, int i) {
    int n = l(params);
    if (i < 0 || i >= n)
      return params;
    if (n == 2)
      return null;
    Object[] p = new Object[n - 2];
    System.arraycopy(params, 0, p, 0, i);
    System.arraycopy(params, i + 2, p, i, n - i - 2);
    return p;
  }

  static public boolean checkConceptFields(Concept x, Object... data) {
    for (int i = 0; i < l(data); i += 2) if (neq(cget(x, (String) data[i]), deref(data[i + 1])))
      return false;
    return true;
  }

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

  static public TreeSet<String> caseInsensitiveSet() {
    return caseInsensitiveSet_treeSet();
  }

  static public TreeSet<String> caseInsensitiveSet(Collection<String> c) {
    return caseInsensitiveSet_treeSet(c);
  }

  static public CloseableIterableIterator emptyCloseableIterableIterator_instance = new CloseableIterableIterator() {

    public Object next() {
      throw fail();
    }

    public boolean hasNext() {
      return false;
    }
  };

  static public <A> CloseableIterableIterator<A> emptyCloseableIterableIterator() {
    return emptyCloseableIterableIterator_instance;
  }

  static public CloseableIterableIterator<String> linesFromReader(Reader r) {
    final BufferedReader br = bufferedReader(r);
    return iteratorFromFunction_f0_autoCloseable(new F0<String>() {

      public String get() {
        try {
          return readLineFromReaderWithClose(br);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret readLineFromReaderWithClose(br);";
      }
    }, _wrapIOCloseable(r));
  }

  static public BufferedReader utf8bufferedReader(InputStream in) {
    try {
      return bufferedReader(_registerIOWrap(new InputStreamReader(in, "UTF-8"), in));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public BufferedReader utf8bufferedReader(File f) {
    try {
      return utf8bufferedReader(newFileInputStream(f));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public GZIPInputStream newGZIPInputStream(File f) {
    return gzInputStream(f);
  }

  static public GZIPInputStream newGZIPInputStream(InputStream in) {
    return gzInputStream(in);
  }

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

  static public Object unstructure(String text) {
    return unstructure(text, false);
  }

  static public Object unstructure(String text, final boolean allDynamic) {
    return unstructure(text, allDynamic, null);
  }

  static public int structure_internStringsLongerThan = 50;

  static public int unstructure_unquoteBufSize = 100;

  static public int unstructure_tokrefs;

  abstract static public class unstructure_Receiver {

    abstract public void set(Object o);
  }

  static public Object unstructure(String text, boolean allDynamic, Object classFinder) {
    if (text == null)
      return null;
    return unstructure_tok(javaTokC_noMLS_iterator(text), allDynamic, classFinder);
  }

  static public Object unstructure_reader(BufferedReader reader) {
    return unstructure_tok(javaTokC_noMLS_onReader(reader), false, null);
  }

  static public Object unstructure_tok(final Producer<String> tok, final boolean allDynamic, final Object _classFinder) {
    final boolean debug = unstructure_debug;
    final class X {

      public int i = -1;

      final public Object classFinder = _classFinder != null ? _classFinder : _defaultClassFinder();

      public HashMap<Integer, Object> refs = new HashMap();

      public HashMap<Integer, Object> tokrefs = new HashMap();

      public HashSet<String> concepts = new HashSet();

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

      public List<Runnable> stack = new ArrayList();

      public String curT;

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

      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 = 0;
        if (structure_isMarker(t, 0, l(t))) {
          refID = parseInt(t.substring(1));
          consume();
        }
        final int _refID = refID;
        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, final unstructure_Receiver out) {
        String t = t();
        Class c = classesMap.get(t);
        if (c == null) {
          if (t.startsWith("\"")) {
            String s = internIfLongerThan(unquote(tpp()), structure_internStringsLongerThan);
            out.set(s);
            return;
          }
          if (t.startsWith("'")) {
            out.set(unquoteCharacter(tpp()));
            return;
          }
          if (t.equals("bigint")) {
            out.set(parseBigInt());
            return;
          }
          if (t.equals("d")) {
            out.set(parseDouble());
            return;
          }
          if (t.equals("fl")) {
            out.set(parseFloat());
            return;
          }
          if (t.equals("sh")) {
            consume();
            t = tpp();
            if (t.equals("-")) {
              t = tpp();
              out.set((short) (-parseInt(t)));
              return;
            }
            out.set((short) parseInt(t));
            return;
          }
          if (t.equals("-")) {
            consume();
            t = tpp();
            out.set(isLongConstant(t) ? (Object) (-parseLong(t)) : (Object) (-parseInt(t)));
            return;
          }
          if (isInteger(t) || isLongConstant(t)) {
            consume();
            if (isLongConstant(t)) {
              out.set(parseLong(t));
              return;
            }
            long l = parseLong(t);
            boolean isInt = l == (int) l;
            out.set(isInt ? (Object) Integer.valueOf((int) l) : (Object) Long.valueOf(l));
            return;
          }
          if (t.equals("false") || t.equals("f")) {
            consume();
            out.set(false);
            return;
          }
          if (t.equals("true") || t.equals("t")) {
            consume();
            out.set(true);
            return;
          }
          if (t.equals("-")) {
            consume();
            t = tpp();
            out.set(isLongConstant(t) ? (Object) (-parseLong(t)) : (Object) (-parseInt(t)));
            return;
          }
          if (isInteger(t) || isLongConstant(t)) {
            consume();
            if (isLongConstant(t)) {
              out.set(parseLong(t));
              return;
            }
            long l = parseLong(t);
            boolean isInt = l == (int) l;
            out.set(isInt ? (Object) Integer.valueOf((int) l) : (Object) Long.valueOf(l));
            return;
          }
          if (t.equals("File")) {
            consume();
            File f = new File(unquote(tpp()));
            out.set(f);
            return;
          }
          if (t.startsWith("r") && isInteger(t.substring(1))) {
            consume();
            int ref = Integer.parseInt(t.substring(1));
            Object o = refs.get(ref);
            if (o == null)
              throw fail("unsatisfied back reference " + ref);
            out.set(o);
            return;
          }
          if (t.startsWith("t") && isInteger(t.substring(1))) {
            consume();
            int ref = Integer.parseInt(t.substring(1));
            Object o = tokrefs.get(ref);
            if (o == null)
              throw fail("unsatisfied token reference " + ref + " at " + tokIndex);
            out.set(o);
            return;
          }
          if (t.equals("hashset")) {
            parseHashSet(out);
            return;
          }
          if (t.equals("lhs")) {
            parseLinkedHashSet(out);
            return;
          }
          if (t.equals("treeset")) {
            parseTreeSet(out);
            return;
          }
          if (t.equals("ciset")) {
            parseCISet(out);
            return;
          }
          if (eqOneOf(t, "hashmap", "hm")) {
            consume();
            parseMap(new HashMap(), out);
            return;
          }
          if (t.equals("lhm")) {
            consume();
            parseMap(new LinkedHashMap(), out);
            return;
          }
          if (t.equals("tm")) {
            consume();
            parseMap(new TreeMap(), out);
            return;
          }
          if (t.equals("cimap")) {
            consume();
            parseMap(ciMap(), out);
            return;
          }
          if (t.equals("ll")) {
            consume();
            {
              parseList(new LinkedList(), out);
              return;
            }
          }
          if (t.equals("syncLL")) {
            consume();
            {
              parseList(synchroLinkedList(), out);
              return;
            }
          }
          if (t.equals("sync")) {
            consume();
            {
              parse(new unstructure_Receiver() {

                public void set(Object value) {
                  if (value instanceof Map) {
                    if (value instanceof NavigableMap) {
                      out.set(Collections.synchronizedNavigableMap((NavigableMap) value));
                      return;
                    }
                    if (value instanceof SortedMap) {
                      out.set(Collections.synchronizedSortedMap((SortedMap) value));
                      return;
                    }
                    {
                      out.set(Collections.synchronizedMap((Map) value));
                      return;
                    }
                  } else {
                    out.set(Collections.synchronizedList((List) value));
                    return;
                  }
                }
              });
              return;
            }
          }
          if (t.equals("{")) {
            parseMap(out);
            return;
          }
          if (t.equals("[")) {
            this.parseList(new ArrayList(), out);
            return;
          }
          if (t.equals("bitset")) {
            parseBitSet(out);
            return;
          }
          if (t.equals("array") || t.equals("intarray")) {
            parseArray(out);
            return;
          }
          if (t.equals("ba")) {
            consume();
            String hex = unquote(tpp());
            out.set(hexToBytes(hex));
            return;
          }
          if (t.equals("boolarray")) {
            consume();
            int n = parseInt(tpp());
            String hex = unquote(tpp());
            out.set(boolArrayFromBytes(hexToBytes(hex), n));
            return;
          }
          if (t.equals("class")) {
            out.set(parseClass());
            return;
          }
          if (t.equals("l")) {
            parseLisp(out);
            return;
          }
          if (t.equals("null")) {
            consume();
            out.set(null);
            return;
          }
          if (eq(t, "c")) {
            consume();
            t = t();
            assertTrue(isJavaIdentifier(t));
            concepts.add(t);
          }
          if (eq(t, "cu")) {
            consume();
            t = tpp();
            assertTrue(isJavaIdentifier(t));
            String fullClassName = "main$" + t;
            Class _c = classFinder != null ? (Class) callF(classFinder, fullClassName) : findClass_fullName(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("j");
          out.set(parseJava());
          return;
        }
        if (c == null && !isJavaIdentifier(t))
          throw new RuntimeException("Unknown token " + (i + 1) + ": " + t);
        consume();
        String className, fullClassName;
        if (eq(t(), ".")) {
          consume();
          className = fullClassName = t + "." + assertIdentifier(tpp());
        } else {
          className = t;
          fullClassName = "main$" + t;
        }
        if (c == null) {
          if (allDynamic)
            c = null;
          else
            c = classFinder != null ? (Class) callF(classFinder, fullClassName) : findClass_fullName(fullClassName);
          if (c != null)
            classesMap.put(className, c);
        }
        boolean hasBracket = eq(t(), "(");
        if (hasBracket)
          consume();
        boolean hasOuter = hasBracket && eq(t(), "this$1");
        DynamicObject dO = null;
        Object o = null;
        final String thingName = t;
        if (c != null) {
          o = hasOuter ? nuStubInnerObject(c, classFinder) : nuEmptyObject(c);
          if (o instanceof DynamicObject)
            dO = (DynamicObject) o;
        } else {
          if (concepts.contains(t) && (c = findClass("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);
        final LinkedHashMap<String, Object> fields = new LinkedHashMap();
        final Object _o = o;
        final DynamicObject _dO = dO;
        if (hasBracket) {
          stack.add(new Runnable() {

            public void run() {
              try {
                if (eq(t(), ","))
                  consume();
                if (eq(t(), ")")) {
                  consume(")");
                  objRead(_o, _dO, fields, hasOuter);
                  out.set(_o != null ? _o : _dO);
                } else {
                  final String key = unquote(tpp());
                  String t = tpp();
                  if (!eq(t, "="))
                    throw fail("= expected, got " + t + " after " + quote(key) + " in object " + thingName);
                  stack.add(this);
                  parse(new unstructure_Receiver() {

                    public void set(Object value) {
                      fields.put(key, value);
                    }
                  });
                }
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "ifdef unstructure_debug\r\n            print(\"in object values, token: \" + t())...";
            }
          });
        } else {
          objRead(o, dO, fields, hasOuter);
          out.set(o != null ? o : dO);
        }
      }

      public void objRead(Object o, DynamicObject dO, Map<String, Object> fields, boolean hasOuter) {
        if (o != null) {
          if (dO != null) {
            setOptAllDyn(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) {
        consume("[");
        stack.add(new Runnable() {

          public void run() {
            try {
              if (eq(t(), "]")) {
                consume();
                out.set(list);
              } else {
                stack.add(this);
                parse(new unstructure_Receiver() {

                  public void set(Object o) {
                    list.add(o);
                    if (eq(t(), ","))
                      consume();
                  }
                });
              }
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "if (eq(t(), \"]\")) {\r\n          consume();\r\n          ifdef unstructure_debug\r...";
          }
        });
      }

      public void parseArray(final unstructure_Receiver out) {
        final String type = tpp();
        consume("{");
        final List list = new ArrayList();
        stack.add(new Runnable() {

          public void run() {
            try {
              if (eq(t(), "}")) {
                consume("}");
                out.set(type.equals("intarray") ? toIntArray(list) : list.toArray());
              } else {
                stack.add(this);
                parse(new unstructure_Receiver() {

                  public void set(Object o) {
                    list.add(o);
                    if (eq(t(), ","))
                      consume();
                  }
                });
              }
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "if (eq(t(), \"}\")) {\r\n          consume(\"}\");\r\n          out.set(type.equals(\"...";
          }
        });
      }

      public Object parseClass() {
        consume("class");
        consume("(");
        String name = unquote(tpp());
        consume(")");
        Class c = allDynamic ? null : classFinder != null ? (Class) callF(classFinder, name) : findClass_fullName(name);
        if (c != null)
          return c;
        DynamicObject dO = new DynamicObject();
        dO.className = "java.lang.Class";
        name = dropPrefix("main$", name);
        dO.fieldValues.put("name", name);
        return dO;
      }

      public Object parseBigInt() {
        consume("bigint");
        consume("(");
        String val = tpp();
        if (eq(val, "-"))
          val = "-" + tpp();
        consume(")");
        return new BigInteger(val);
      }

      public Object parseDouble() {
        consume("d");
        consume("(");
        String val = unquote(tpp());
        consume(")");
        return Double.parseDouble(val);
      }

      public Object parseFloat() {
        consume("fl");
        String val;
        if (eq(t(), "(")) {
          consume("(");
          val = unquote(tpp());
          consume(")");
        } else {
          val = unquote(tpp());
        }
        return Float.parseFloat(val);
      }

      public void parseHashSet(unstructure_Receiver out) {
        consume("hashset");
        parseSet(new HashSet(), out);
      }

      public void parseLinkedHashSet(unstructure_Receiver out) {
        consume("lhs");
        parseSet(new LinkedHashSet(), out);
      }

      public void parseTreeSet(unstructure_Receiver out) {
        consume("treeset");
        parseSet(new TreeSet(), out);
      }

      public void parseCISet(unstructure_Receiver out) {
        consume("ciset");
        parseSet(ciSet(), out);
      }

      public void parseMap(unstructure_Receiver out) {
        parseMap(new TreeMap(), out);
      }

      public Object parseJava() {
        String j = unquote(tpp());
        Matches m = new Matches();
        if (jmatch("java.awt.Color[r=*,g=*,b=*]", j, m))
          return nuObject("java.awt.Color", parseInt(m.unq(0)), parseInt(m.unq(1)), parseInt(m.unq(2)));
        else {
          warn("Unknown Java object: " + j);
          return null;
        }
      }

      public void parseMap(final Map map, final unstructure_Receiver out) {
        consume("{");
        stack.add(new Runnable() {

          public boolean v = false;

          public Object key;

          public void run() {
            if (v) {
              v = false;
              stack.add(this);
              if (!eq(tpp(), "="))
                throw fail("= expected, got " + t() + " in map of size " + l(map));
              parse(new unstructure_Receiver() {

                public void set(Object value) {
                  map.put(key, value);
                  if (eq(t(), ","))
                    consume();
                }
              });
            } else {
              if (eq(t(), "}")) {
                consume("}");
                out.set(map);
              } else {
                v = true;
                stack.add(this);
                parse(new unstructure_Receiver() {

                  public void set(Object o) {
                    key = o;
                  }
                });
              }
            }
          }
        });
      }

      public void consume() {
        curT = tok.next();
        ++i;
      }

      public void consume(String s) {
        if (!eq(t(), s)) {
          throw fail(quote(s) + " expected, got " + quote(t()));
        }
        consume();
      }

      public void parse_initial(unstructure_Receiver out) {
        consume();
        parse(out);
        while (nempty(stack)) popLast(stack).run();
      }
    }
    Boolean b = DynamicObject_loading.get();
    DynamicObject_loading.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 {
      DynamicObject_loading.set(b);
    }
  }

  static public boolean unstructure_debug = false;

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

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

  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 __2 = tempCleaningUp();
    try {
      Lock __1 = appendToFile_lock;
      lock(__1);
      try {
        closeAllWriters(values(appendToFile_writers));
        appendToFile_writers.clear();
      } finally {
        unlock(__1);
      }
    } finally {
      _close(__2);
    }
  }

  static public <A> A assertEquals(Object x, A y) {
    return assertEquals(null, x, y);
  }

  static public <A> A assertEquals(String msg, Object x, A y) {
    if (assertVerbose())
      return assertEqualsVerbose(msg, x, y);
    if (!(x == null ? y == null : x.equals(y)))
      throw fail((msg != null ? msg + ": " : "") + y + " != " + x);
    return y;
  }

  static public 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 quoteToPrintWriter(String s, PrintWriter out) {
    if (s == null) {
      out.print("null");
      return;
    }
    out.print('"');
    int l = s.length();
    for (int i = 0; i < l; i++) {
      char c = s.charAt(i);
      if (c == '\\' || c == '"') {
        out.print('\\');
        out.print(c);
      } else if (c == '\r')
        out.print("\\r");
      else if (c == '\n')
        out.print("\\n");
      else if (c == '\0')
        out.print("\\0");
      else
        out.print(c);
    }
    out.print('"');
  }

  static public String quoteCharacter(char c) {
    if (c == '\'')
      return "'\\''";
    if (c == '\\')
      return "'\\\\'";
    if (c == '\r')
      return "'\\r'";
    if (c == '\n')
      return "'\\n'";
    if (c == '\t')
      return "'\\t'";
    return "'" + c + "'";
  }

  static public boolean isCISet_gen(Iterable<String> l) {
    return l instanceof TreeSet && className(((TreeSet) l).comparator()).contains("CIComp");
  }

  static public <A> List<A> unwrapSynchronizedList(List<A> l) {
    if (eqOneOf(className(l), "java.util.Collections$SynchronizedList", "java.util.Collections$SynchronizedRandomAccessList"))
      return (List) get_raw(l, "list");
    return l;
  }

  static public boolean isCIMap_gen(Map map) {
    return map instanceof TreeMap && className(((TreeMap) map).comparator()).contains("CIComp");
  }

  static public <A, B> Map<A, B> unwrapSynchronizedMap(Map<A, B> map) {
    if (eqOneOf(className(map), "java.util.Collections$SynchronizedMap", "java.util.Collections$SynchronizedSortedMap", "java.util.Collections$SynchronizedNavigableMap"))
      return (Map) get_raw(map, "m");
    return map;
  }

  static public String boolArrayToHex(boolean[] a) {
    return bytesToHex(boolArrayToBytes(a));
  }

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

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

  static public String shortDynamicClassName(Object o) {
    if (o instanceof DynamicObject && ((DynamicObject) o).className != null)
      return ((DynamicObject) o).className;
    return shortClassName(o);
  }

  static public Map<Class, Field[]> getDeclaredFields_cache = newDangerousWeakHashMap();

  static public Field[] getDeclaredFields_cached(Class c) {
    Field[] fields;
    synchronized (getDeclaredFields_cache) {
      fields = getDeclaredFields_cache.get(c);
      if (fields == null) {
        getDeclaredFields_cache.put(c, fields = c.getDeclaredFields());
        for (Field f : fields) makeAccessible(f);
      }
    }
    return fields;
  }

  static public boolean startsWithDigit(String s) {
    return nempty(s) && isDigit(s.charAt(0));
  }

  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 int countDots(String s) {
    int n = l(s), count = 0;
    for (int i = 0; i < n; i++) if (s.charAt(i) == '.')
      ++count;
    return count;
  }

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

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

  static public List<List<String>> unifyStringsInTokenizations(Iterable<List<String>> toks) {
    HashMap<String, String> map = new HashMap();
    return levelTwoMap(toks, new F1<String, String>() {

      public String get(String s) {
        try {
          String x = map.get(s);
          if (x != null)
            return x;
          map.put(s, s);
          return s;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "S x = map.get(s);\r\n    if (x != null) ret x;\r\n    map.put(s, s);\r\n    ret s;";
      }
    });
  }

  static public List<List<String>> wordTokAll(Iterable<String> l) {
    return map(s -> wordTok(s), l);
  }

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

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

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

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

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

  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 String getClientIPFromHeaders(Map<String, String> headers) {
    if (headers == null)
      return null;
    String remoteAddr = (String) (headers.get("remote-addr"));
    String client = (String) (headers.get("x-forwarded-for"));
    if (nempty(client))
      remoteAddr += "," + client;
    return remoteAddr;
  }

  static public boolean 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 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 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> List<A> sorted(Collection<A> c, final Object comparator) {
    List<A> l = cloneList(c);
    sort(l, makeComparator(comparator));
    return l;
  }

  static public <A> List<A> sorted(Collection<A> c) {
    List<A> l = cloneList(c);
    sort(l);
    return l;
  }

  static public List<String> methodsStartingWith(Object o, final String prefix) {
    return filter(allMethodNames(o), new F1<String, Object>() {

      public Object get(String s) {
        try {
          return startsWith(s, prefix);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "startsWith(s, prefix)";
      }
    });
  }

  static public boolean isJavaXClassLoader(ClassLoader cl) {
    return startsWithOneOf(className(cl), "main$JavaXClassLoader", "x30$JavaXClassLoader");
  }

  static public void setOptAll(Object o, Map<String, Object> fields) {
    if (fields == null)
      return;
    for (String field : keys(fields)) setOpt(o, field, fields.get(field));
  }

  static public void setOptAll(Object o, Object... values) {
    warnIfOddCount(values);
    for (int i = 0; i + 1 < l(values); i += 2) {
      String field = (String) values[i];
      Object value = values[i + 1];
      setOpt(o, field, value);
    }
  }

  static public 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 boolean fileExists(String path) {
    return path != null && new File(path).exists();
  }

  static public boolean fileExists(File f) {
    return f != null && f.exists();
  }

  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 boolean isSymLink(File f) {
    return f != null && Files.isSymbolicLink(toPath(f));
  }

  static public Path fileToPath(File f) {
    return toPath(f);
  }

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

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

  static public File mkdirs(File dir) {
    if (dir != null)
      dir.mkdirs();
    return dir;
  }

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

  static public List<File> listFilesNotDirs(String dir) {
    return listFilesOnly(dir);
  }

  static public List<File> listFilesNotDirs(File... dirs) {
    return listFilesOnly(dirs);
  }

  static public int matcherInt(Matcher m, int i) {
    return parseInt(m.group(i));
  }

  static public long timestampFromYMDH(int y, int m, int d, int h) {
    return new GregorianCalendar(y, m - 1, d, h, 0).getTimeInMillis();
  }

  static public <A> List<A> sortByMap_inPlace(List<A> l, Map<A, ?> map) {
    sort(l, mapComparator(map));
    return l;
  }

  static public 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 defaultAgeBasedBackupRetentionStrategy_shouldKeep(double age, double lastAge) {
    if (age <= 0.5)
      return true;
    if (age <= 7 && age >= lastAge + 1)
      return true;
    if (age >= lastAge + 7)
      return true;
    return false;
  }

  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 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);
  }

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

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

  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 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;
      return (o instanceof Class ? (Class) o : o.getClass()).getClassLoader().loadClass("main");
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static public boolean eqGet(List l, int i, Object o) {
    return eq(get(l, i), o);
  }

  static public <A, B> boolean eqGet(Map<A, B> map, A key, Object o) {
    return eq(mapGet(map, key), o);
  }

  static public boolean isIdentifier(String s) {
    return isJavaIdentifier(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 T3<String, String, String> agiBlue_parseTriple(String s) {
    return agiBlue_parseTriple(javaTokWithBrackets(s));
  }

  static public T3<String, String, String> agiBlue_parseTriple(List<String> tok) {
    List<String> split = tok_splitAtSlashes(tok);
    if (l(split) != 3 || !allNempty(split))
      return null;
    return listToTriple(uncurlyAll(split));
  }

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

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

  static public boolean containsDollarVars(String s) {
    List<String> tok = javaTok(s);
    for (int i = 1; i < l(tok); i += 2) if (isDollarVar(tok.get(i)))
      return true;
    return false;
  }

  static public String javaDropComments(String s) {
    return javaDropAllComments(s);
  }

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

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

  static public void withCancelPoint(VF1<CancelPoint> r) {
    CancelPoint cp = newCancelPoint();
    try {
      try {
        callF(r, cp);
      } catch (Throwable e) {
        e = innerException(e);
        if (!(e instanceof CancelToCancelPoint && ((CancelToCancelPoint) e).cp == cp))
          rethrow(e);
      }
    } finally {
      _close(cp);
    }
  }

  static public void withCancelPoint(IVF1<CancelPoint> r) {
    CancelPoint cp = newCancelPoint();
    try {
      try {
        r.get(cp);
      } catch (Throwable e) {
        e = innerException(e);
        if (!(e instanceof CancelToCancelPoint && ((CancelToCancelPoint) e).cp == cp))
          rethrow(e);
      }
    } finally {
      _close(cp);
    }
  }

  static public RuntimeException cancelTo(CancelPoint cp) {
    if (cp.closed)
      throw fail("cancel point closed");
    throw new CancelToCancelPoint(cp);
  }

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

  static public String dollarVarsToStars(String s, List<String> varNames_out) {
    List<String> tok = javaTok(s);
    for (int i = 1; i < l(tok); i += 2) {
      String t = tok.get(i);
      if (isDollarVar(t)) {
        listAdd(varNames_out, t);
        tok.set(i, "*");
      } else if (eq(t, "*"))
        listAdd(varNames_out, "*");
    }
    return join(tok);
  }

  static public boolean flexMatchIC_iterate_debug = false;

  static public void flexMatchIC_iterate(String pat, String input, VF1<Matches> onMatch) {
    if (flexMatchIC_iterate_debug)
      print("flexMatchIC_iterate " + pat + " / " + input);
    List<String> tokPat = javaTokNPunctuation_plusAsterisk(pat), tokInput = javaTokNPunctuation_plusAsterisk(input);
    List<Integer> varIndices = new ArrayList();
    for (int i = 1; i < l(tokPat); i += 2) {
      String t = tokPat.get(i);
      if (eq(t, "*"))
        varIndices.add(i);
      else if (isIdentifier(t) && !cicAtOddPosition(tokInput, t)) {
        if (flexMatchIC_iterate_debug)
          print("Crucial word fail (" + t + "): " + pat + " / " + input);
        return;
      }
    }
    if (flexMatchIC_iterate_debug)
      printStructs("varIndices", varIndices, "tokPat", tokPat, "tokInput", tokInput);
    List<List<String>> spreadInputs = ai_spreadCertainIndices_2(tokPat, tokInput, varIndices);
    for (List<String> tok : spreadInputs) {
      if (flexMatchIC_iterate_debug)
        print("Testing spread input: " + sfu(tok));
      Matches m = new Matches();
      if (match(pat, tok, m))
        callF(onMatch, m);
    }
  }

  static public Map<String, String> matchesToMapUsingVarList_ciMap(Matches m, List<String> vars) {
    if (m == null)
      return null;
    Map<String, String> map = ciMap();
    int n = min(l(m.m), l(vars));
    for (int i = 0; i < n; i++) if (!strictPutIC(map, vars.get(i), m.get(i)))
      return null;
    return map;
  }

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

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

  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 void assertFalse(Object o) {
    if (!(eq(o, false)))
      throw fail(str(o));
  }

  static public boolean assertFalse(boolean b) {
    if (b)
      throw fail("oops");
    return b;
  }

  static public boolean assertFalse(String msg, boolean b) {
    if (b)
      throw fail(msg);
    return b;
  }

  static public boolean _inCore() {
    return false;
  }

  static public Class __javax;

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

  static public int isAndroid_flag;

  static public boolean isAndroid() {
    if (isAndroid_flag == 0)
      isAndroid_flag = System.getProperty("java.vendor").toLowerCase().indexOf("android") >= 0 ? 1 : -1;
    return isAndroid_flag > 0;
  }

  static public Object hotwire_onCompile;

  static public boolean hotwire_serially = false;

  static public Lock hotwire_overInternalBot_lock = lock();

  static public boolean hotwire_compileOnServer = false;

  static public Class<?> hotwire_overInternalBot(String progID) {
    return hotwire_overInternalBot(progID, "main");
  }

  static public Class<?> hotwire_overInternalBot(String progID, String mainClass) {
    try {
      Pair<File, String> p;
      try {
        p = hotwire_compile(progID);
      } catch (Throwable e) {
        throw rethrow("Error hotwiring " + progID, e);
      }
      File jar = p.a;
      assertTrue(jar.getAbsolutePath(), jar.isFile());
      List<File> files = hotwire_collectJars(jar);
      JavaXClassLoader classLoader = hotwire_makeClassLoader(files);
      classLoader.progID = progID;
      return hotwire_finish(classLoader, progID, p.b, mainClass);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Pair<File, String> hotwire_compile(String progID) {
    Pair<File, String> p = hotwire_compileOnServer && !isLocalSnippetID(progID) ? compileSnippetThroughServer(progID) : CompilerBot.compileSnippet2(progID);
    Lock __0 = hotwire_serially ? hotwire_overInternalBot_lock : null;
    lock(__0);
    try {
      callF(hotwire_onCompile, p);
      return p;
    } finally {
      unlock(__0);
    }
  }

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

  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 boolean eqicOrEq(Object a, Object b) {
    return a instanceof String && b instanceof String ? eqic((String) a, (String) b) : eq(a, b);
  }

  static public boolean regexpICMatches(String pat, String s) {
    return regexpIC(pat, s).matches();
  }

  static public boolean regexpICMatches(Pattern pat, String s) {
    return pat.matcher(s).matches();
  }

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

  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 substring(url, smartIndexOf(url, "?") + 1);
  }

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

  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 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 regionMatchesIC(String a, int offsetA, String b, int offsetB, int len) {
    return a != null && a.regionMatches(true, offsetA, b, offsetB, len);
  }

  static public Matcher regexp(String pat, String s) {
    return regexp(compileRegexp(pat), unnull(s));
  }

  static public Matcher regexp(Pattern pat, String s) {
    return pat.matcher(unnull(s));
  }

  static public Pattern regexp(String pat) {
    return compileRegexp(pat);
  }

  static public Object callOpt_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.findMethod(method, args);
        if (me == null) {
          return null;
        }
        if ((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(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);
          }
        return null;
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean allLowerCaseCharacters(String s) {
    for (int i = 0; i < l(s); i++) if (Character.getType(s.charAt(i)) != Character.LOWERCASE_LETTER)
      return false;
    return true;
  }

  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 boolean endsWithLetter(String s) {
    return nempty(s) && isLetter(last(s));
  }

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

  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 unpackAGIDomain(String s) {
    return isAGIDomain(s) ? dropSuffixIC(".agi.blue", s) : null;
  }

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

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

  static public String unicodeFromCodePoint(int codePoint) {
    return codePointToString(codePoint);
  }

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

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

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

  static public Object dm_getService(String serviceName) {
    return empty(serviceName) ? null : dm_getModule(vmBus_query(assertIdentifier(serviceName)));
  }

  static public boolean isStringOrIntOrLong(Object o) {
    return o instanceof String || o instanceof Integer || o instanceof Long;
  }

  static public Object dm_callOS(String functionName, Object... args) {
    return call(dm_os(), functionName, args);
  }

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

  static final public Map<Class, _MethodCache> callOpt_cache = newDangerousWeakHashMap();

  static public Object callOpt_cached(Object o, String methodName, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        Class c = (Class) o;
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(methodName, args);
        if (me == null || (me.getModifiers() & Modifier.STATIC) == 0)
          return null;
        return invokeMethod(me, null, args);
      } else {
        Class c = o.getClass();
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(methodName, args);
        if (me == null)
          return null;
        return invokeMethod(me, o, args);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public _MethodCache callOpt_getCache(Class c) {
    synchronized (callOpt_cache) {
      _MethodCache cache = callOpt_cache.get(c);
      if (cache == null)
        callOpt_cache.put(c, cache = new _MethodCache(c));
      return cache;
    }
  }

  static public boolean isStaticMethod(Method m) {
    return methodIsStatic(m);
  }

  static public Object[] massageArgsForVarArgsCall(Method m, Object[] args) {
    Class<?>[] types = m.getParameterTypes();
    int n = types.length - 1, nArgs = args.length;
    if (nArgs < n)
      return null;
    for (int i = 0; i < n; i++) if (!argumentCompatibleWithType(args[i], types[i]))
      return null;
    Class varArgType = types[n].getComponentType();
    for (int i = n; i < nArgs; i++) if (!argumentCompatibleWithType(args[i], varArgType))
      return null;
    Object[] newArgs = new Object[n + 1];
    arraycopy(args, 0, newArgs, 0, n);
    Object[] varArgs = arrayOfType(varArgType, nArgs - n);
    arraycopy(args, n, varArgs, 0, nArgs - n);
    newArgs[n] = varArgs;
    return newArgs;
  }

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

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

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

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

  static public Object[] mapToParams(Map map) {
    return mapToObjectArray(map);
  }

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

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

  static public List<String> trimAll(Collection<String> l) {
    List<String> l2 = new ArrayList();
    if (l != null)
      for (String s : l) l2.add(trim(s));
    return l2;
  }

  static public List<String> splitAt(String s, String splitter) {
    List<String> parts = new ArrayList();
    int i = 0;
    if (s != null)
      while (i < l(s)) {
        int j = indexOf(s, splitter, i);
        if (j < 0)
          j = l(s);
        parts.add(substring(s, i, j));
        i = j + l(splitter);
      }
    return parts;
  }

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

  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 (isURL(snippetID))
      return snippetID;
    long id = parseSnippetID(snippetID);
    String url;
    if (id == 1000010 || id == 1000012)
      url = "http://tinybrain.de:8080/tb/show-blobimage.php?id=" + id;
    else if (isImageServerSnippet(id))
      url = imageServerLink(id);
    else
      url = "https://www.botcompany.de:8443/img/" + id;
    return url;
  }

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

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

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

  static public Set vm_generalIdentityHashSet(Object name) {
    synchronized (get(javax(), "generalMap")) {
      Set set = (Set) (vm_generalMap_get(name));
      if (set == null)
        vm_generalMap_put(name, set = syncIdentityHashSet());
      return set;
    }
  }

  static public Map vm_generalHashMap(Object name) {
    synchronized (get(javax(), "generalMap")) {
      Map m = (Map) (vm_generalMap_get(name));
      if (m == null)
        vm_generalMap_put(name, m = syncHashMap());
      return m;
    }
  }

  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 String trimLastLine(String s) {
    return trim(lastLine(s));
  }

  static public <A> A liftLast(List<A> l) {
    if (empty(l))
      return null;
    int i = l(l) - 1;
    A a = l.get(i);
    l.remove(i);
    return a;
  }

  static public <A> List<A> liftLast(int n, List<A> l) {
    int i = l(l) - n;
    List<A> part = cloneSubList(l, i);
    removeSubList(l, i);
    return part;
  }

  static public 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 double parseDouble(String s) {
    return Double.parseDouble(s);
  }

  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 Map<String, List<String>> javaTokNPunctuationWithBrackets_plusAsterisk_cached_cache = synchronizedMRUCache(defaultTokenizerCacheSize());

  static public List<String> javaTokNPunctuationWithBrackets_plusAsterisk_cached(String s) {
    List<String> tok = javaTokNPunctuationWithBrackets_plusAsterisk_cached_cache.get(s);
    if (tok == null)
      javaTokNPunctuationWithBrackets_plusAsterisk_cached_cache.put(s, tok = javaTokNPunctuationWithBrackets_plusAsterisk(s));
    return tok;
  }

  static public List<List<String>> positionalTokenIndex_filter(PositionalTokenIndex idx, List<String> tok) {
    int cutOff = 1;
    List<List<String>> shortestList = null;
    for (int i = 1; i < l(tok); i += 2) {
      String t = tok.get(i);
      if (!eq(t, "*")) {
        List<List<String>> list = idx.byToken(i / 2, t);
        if (l(list) < cutOff)
          return list;
        if (shortestList == null || l(list) < l(shortestList))
          shortestList = list;
      }
    }
    if (shortestList == null)
      return idx.fullList();
    return shortestList;
  }

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

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

  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 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 Map synchroMap() {
    return synchroHashMap();
  }

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

  static public <A, B> B mapGet2(Map<A, B> map, A a) {
    return map == null ? null : map.get(a);
  }

  static public <A, B> B mapGet2(A a, Map<A, B> map) {
    return map == null ? null : map.get(a);
  }

  static public Set<String> reflection_classesNotToScan_value = litset("jdk.internal.loader.URLClassPath");

  static public Set<String> reflection_classesNotToScan() {
    return reflection_classesNotToScan_value;
  }

  static public String joinWithSpace(Collection<String> c) {
    return join(" ", c);
  }

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

  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 int compareIC(String s1, String s2) {
    return compareIgnoreCase_jdk(s1, s2);
  }

  static public String collapseString(String s) {
    return collapseWord(s);
  }

  static public List _registerWeakMap_preList;

  static public <A> A _registerWeakMap(A map) {
    if (javax() == null) {
      if (_registerWeakMap_preList == null)
        _registerWeakMap_preList = synchroList();
      _registerWeakMap_preList.add(map);
      return map;
    }
    try {
      call(javax(), "_registerWeakMap", map);
    } catch (Throwable e) {
      printException(e);
      print("Upgrade JavaX!!");
    }
    return map;
  }

  static public void _onLoad_registerWeakMap() {
    assertNotNull(javax());
    if (_registerWeakMap_preList == null)
      return;
    for (Object o : _registerWeakMap_preList) _registerWeakMap(o);
    _registerWeakMap_preList = null;
  }

  static public Boolean isHeadless_cache;

  static public boolean isHeadless() {
    if (isHeadless_cache != null)
      return isHeadless_cache;
    if (isAndroid())
      return isHeadless_cache = true;
    if (GraphicsEnvironment.isHeadless())
      return isHeadless_cache = true;
    try {
      SwingUtilities.isEventDispatchThread();
      return isHeadless_cache = false;
    } catch (Throwable e) {
      return isHeadless_cache = true;
    }
  }

  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 List<String> htmlcoarsetok(String s) {
    List<String> tok = new ArrayList<String>();
    int l = 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
          break;
      }
      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() % 2) == 0)
      tok.add("");
    return tok;
  }

  static public File localSnippetFile(long snippetID) {
    return localSnippetsDir(snippetID + ".text");
  }

  static public File localSnippetFile(String snippetID) {
    return localSnippetFile(parseSnippetID(snippetID));
  }

  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 InvocationHandler() {

      public Object invoke(Object proxy, Method method, Object[] args) {
        return call(target, method.getName(), unnull(args));
      }
    });
  }

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

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

  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 volatile public boolean disableCertificateValidation_attempted = false;

  static public void disableCertificateValidation() {
    try {
      if (disableCertificateValidation_attempted)
        return;
      disableCertificateValidation_attempted = true;
      try {
        TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {

          public X509Certificate[] getAcceptedIssuers() {
            return new X509Certificate[0];
          }

          public void checkClientTrusted(X509Certificate[] certs, String authType) {
          }

          public void checkServerTrusted(X509Certificate[] certs, String authType) {
          }
        } };
        HostnameVerifier hv = new HostnameVerifier() {

          public boolean verify(String hostname, SSLSession session) {
            return true;
          }
        };
        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, trustAllCerts, new SecureRandom());
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
        HttpsURLConnection.setDefaultHostnameVerifier(hv);
      } catch (Throwable __e) {
        _handleException(__e);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static final public boolean loadPageThroughProxy_enabled = false;

  static public String loadPageThroughProxy(String url) {
    return null;
  }

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

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

  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 Map vm_generalSubMap(Object name) {
    synchronized (get(javax(), "generalMap")) {
      Map map = (Map) (vm_generalMap_get(name));
      if (map == null)
        vm_generalMap_put(name, map = synchroMap());
      return map;
    }
  }

  static public InputStream urlConnection_getInputStream(URLConnection con) throws IOException {
    UnknownHostException lastException = null;
    for (int _repeat_0 = 0; _repeat_0 < 2; _repeat_0++) {
      try {
        if (con instanceof HttpURLConnection)
          if (((HttpURLConnection) con).getResponseCode() == 500)
            throw new IOException(joinNemptiesWithColonSpace("Server code 500", tryToReadErrorStreamFromURLConnection(((HttpURLConnection) con))));
        return con.getInputStream();
      } catch (UnknownHostException e) {
        lastException = e;
        print("Retrying because of: " + e);
        continue;
      }
    }
    throw lastException;
  }

  static public String toHex(byte[] bytes) {
    return bytesToHex(bytes);
  }

  static public String toHex(byte[] bytes, int ofs, int len) {
    return bytesToHex(bytes, ofs, len);
  }

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

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

  static public URLConnection 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 URLConnection setURLConnectionTimeouts(URLConnection con, long timeout) {
    con.setConnectTimeout(toInt(timeout));
    con.setReadTimeout(toInt(timeout));
    if (con.getConnectTimeout() != timeout || con.getReadTimeout() != timeout)
      print("Warning: Timeouts not set by JDK.");
    return con;
  }

  static public URLConnection setURLConnectionDefaultTimeouts(URLConnection con, long timeout) {
    if (con.getConnectTimeout() == 0) {
      con.setConnectTimeout(toInt(timeout));
      if (con.getConnectTimeout() != timeout)
        print("Warning: URL connect timeout not set by JDK.");
    }
    if (con.getReadTimeout() == 0) {
      con.setReadTimeout(toInt(timeout));
      if (con.getReadTimeout() != timeout)
        print("Warning: URL read timeout not set by JDK.");
    }
    return con;
  }

  static public String htmlQuote(String s) {
    return "\"" + htmlencode_forParams(s) + "\"";
  }

  static public boolean renameFile(File a, File b) {
    mkdirsForFile(b);
    return a.renameTo(b);
  }

  static public boolean renameFile(File a, String newName) {
    return renameFile(a, fileInSameDir(a, newName));
  }

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

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

  static public String hMakeComputerID() {
    return hjavascript("\r\n  function makeComputerID() {\r\n    var text = \"\";\r\n    var possible = \"abcdefghijklmnopqrstuvwxyz\";\r\n\r\n    for (var i = 0; i < 12; i++)\r\n      text += possible.charAt(Math.floor(Math.random() * possible.length));\r\n    return text;\r\n  }\r\n  \r\n  var computerID = localStorage.getItem('computer-id');\r\n  if (computerID == null || computerID.length != 12) {\r\n    computerID = makeComputerID();\r\n    localStorage.setItem('computer-id', computerID);\r\n  }\r\n  ");
  }

  static public String hreconnectingWebSockets() {
    return hjavascript_src_snippet("#1013374");
  }

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

  static public String nodes_pingCmd() {
    return "\r\n    ws.send((working ? 'working' : 'idle') + '; cores=' + navigator.hardwareConcurrency + \"; id=\" + window.computerID\r\n      + (window.benchResult != null ? \"; bench=\" + window.benchResult : \"\") \r\n      + \"; b=\" + navigator.userAgent);\r\n  ";
  }

  static public int subBot_currentPort() {
    return toInt(getOpt(subBot_httpd(), "myPort"));
  }

  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 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 isCIMap(Map m) {
    return m instanceof TreeMap && ((TreeMap) m).comparator() == caseInsensitiveComparator();
  }

  static public Class<?> getClass(String name) {
    try {
      return Class.forName(name);
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static public Class getClass(Object o) {
    return o instanceof Class ? (Class) o : o.getClass();
  }

  static public Class getClass(Object realm, String name) {
    try {
      try {
        return getClass(realm).getClassLoader().loadClass(classNameToVM(name));
      } catch (ClassNotFoundException e) {
        return null;
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static public boolean hasClass(String name) {
    try {
      Class.forName(name);
      return true;
    } catch (Throwable _e) {
      return false;
    }
  }

  static public String javaTok_substringC(String s, int i, int j) {
    return s.substring(i, j);
  }

  static public Map vm_generalWeakSubMap(Object name) {
    synchronized (get(javax(), "generalMap")) {
      Map map = (Map) (vm_generalMap_get(name));
      if (map == null)
        vm_generalMap_put(name, map = newWeakMap());
      return map;
    }
  }

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

  static public Throwable unwrapTrivialExceptionWraps(Throwable e) {
    if (e == null)
      return e;
    while (e.getClass() == RuntimeException.class && e.getCause() != null && eq(e.getMessage(), str(e.getCause()))) e = e.getCause();
    return e;
  }

  static public Throwable innerException2(Throwable e) {
    if (e == null)
      return null;
    while (empty(e.getMessage()) && e.getCause() != null) e = e.getCause();
    return e;
  }

  static public long assumedClusterSize() {
    return 32768;
  }

  static public List<File> findAllFiles_noDirs(List dirs) {
    return findAllFiles_noDirs(asObjectArray(dirs));
  }

  static public List<File> findAllFiles_noDirs(Object... dirs) {
    List<File> l = new ArrayList();
    for (Object dir : dirs) {
      if (dir instanceof String && ((String) dir).endsWith("/.")) {
        for (File f : listFiles(dropSuffix("/.", (String) dir))) if (f.isFile())
          l.add(f);
      } else
        findAllFiles_noDirs_impl(toFile(dir), l);
    }
    return l;
  }

  static public void findAllFiles_noDirs_impl(File dir, List<File> l) {
    for (File f : listFiles(dir)) {
      if (f.isDirectory())
        findAllFiles_noDirs_impl(f, l);
      else
        l.add(f);
    }
  }

  static public List<File> findAllFiles_noDirs_pred(File dir, Object pred) {
    List<File> l = new ArrayList();
    if (isTrue_callF(pred, dir))
      findAllFiles_noDirs_pred_impl(dir, pred, l);
    return l;
  }

  static public void findAllFiles_noDirs_pred_impl(File dir, Object pred, List<File> l) {
    for (File f : listFiles(dir)) {
      if (!isTrue_callF(pred, f))
        continue;
      if (f.isDirectory())
        findAllFiles_noDirs_pred_impl(f, pred, l);
      else
        l.add(f);
    }
  }

  static public int roundUpTo(int n, int x) {
    return (x + n - 1) / n * n;
  }

  static public long roundUpTo(long n, long x) {
    return (x + n - 1) / n * n;
  }

  static public Random defaultRandomGenerator() {
    return ThreadLocalRandom.current();
  }

  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 <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 void setDynObjectValue(DynamicObject o, String field, Object value) {
    o.fieldValues = syncMapPut2_createLinkedHashMap(o.fieldValues, field, value);
  }

  static public void upgradeJavaXAndRestart() {
    run("#1001639");
    restart();
    sleep();
  }

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

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

      public Class get(String name) {
        try {
          Class c = findClass_fullName(name);
          if (c != null)
            return c;
          if (startsWith(name, "loadableUtils.utils$"))
            return findClass_fullName("main" + substring(name, 19));
          return null;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "Class c = findClass_fullName(name);\r\n    if (c != null) ret c;\r\n    if (start...";
      }
    };
  }

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

  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 void sleepInCleanUp(long ms) {
    try {
      if (ms < 0)
        return;
      Thread.sleep(ms);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  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 BufferedReader bufferedReader(Reader r) {
    return r instanceof BufferedReader ? (BufferedReader) r : _registerIOWrap(new BufferedReader(r), r);
  }

  static public <A> CloseableIterableIterator<A> iteratorFromFunction_f0_autoCloseable(final F0<A> f, final AutoCloseable closeable) {
    class IFF2 extends CloseableIterableIterator<A> {

      public A a;

      public boolean done = false;

      public boolean hasNext() {
        getNext();
        return !done;
      }

      public A next() {
        getNext();
        if (done)
          throw fail();
        A _a = a;
        a = null;
        return _a;
      }

      public void getNext() {
        if (done || a != null)
          return;
        a = f.get();
        done = a == null;
      }

      public void close() throws Exception {
        if (closeable != null)
          closeable.close();
      }
    }
    ;
    return new IFF2();
  }

  static public String readLineFromReaderWithClose(BufferedReader r) {
    try {
      String s = r.readLine();
      if (s == null)
        r.close();
      return s;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public AutoCloseable _wrapIOCloseable(final AutoCloseable c) {
    return c == null ? null : new AutoCloseable() {

      public String toString() {
        return "c.close();\r\n    _registerIO(c, null, false);";
      }

      public void close() throws Exception {
        c.close();
        _registerIO(c, null, false);
      }
    };
  }

  static public <A> A _registerIOWrap(A wrapper, Object wrapped) {
    return wrapper;
  }

  static public FileInputStream newFileInputStream(File path) throws IOException {
    return newFileInputStream(path.getPath());
  }

  static public FileInputStream newFileInputStream(String path) throws IOException {
    FileInputStream f = new FileInputStream(path);
    _registerIO(f, path, true);
    return f;
  }

  static public int gzInputStream_defaultBufferSize = 65536;

  static public GZIPInputStream gzInputStream(File f) {
    try {
      return gzInputStream(new FileInputStream(f));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public GZIPInputStream gzInputStream(File f, int bufferSize) {
    try {
      return gzInputStream(new FileInputStream(f), bufferSize);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public GZIPInputStream gzInputStream(InputStream in) {
    return gzInputStream(in, gzInputStream_defaultBufferSize);
  }

  static public GZIPInputStream gzInputStream(InputStream in, int bufferSize) {
    try {
      return _registerIOWrap(new GZIPInputStream(in, gzInputStream_defaultBufferSize), in);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static public Producer<String> javaTokC_noMLS_iterator(final String s) {
    return javaTokC_noMLS_iterator(s, 0);
  }

  static public Producer<String> javaTokC_noMLS_iterator(final String s, final int startIndex) {
    return new Producer<String>() {

      final public int l = s.length();

      public int i = startIndex;

      public String next() {
        if (i >= l)
          return null;
        int j = i;
        char c, d;
        while (j < l) {
          c = s.charAt(j);
          d = j + 1 >= l ? '\0' : s.charAt(j + 1);
          if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
            ++j;
          else if (c == '/' && d == '*') {
            do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
            j = Math.min(j + 2, l);
          } else if (c == '/' && d == '/') {
            do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
          } else
            break;
        }
        i = j;
        if (i >= l)
          return null;
        c = s.charAt(i);
        d = i + 1 >= l ? '\0' : s.charAt(i + 1);
        if (c == '\'' || c == '"') {
          char opener = c;
          ++j;
          while (j < l) {
            if (s.charAt(j) == opener || s.charAt(j) == '\n') {
              ++j;
              break;
            } else if (s.charAt(j) == '\\' && j + 1 < l)
              j += 2;
            else
              ++j;
          }
        } else if (Character.isJavaIdentifierStart(c))
          do ++j; while (j < l && Character.isJavaIdentifierPart(s.charAt(j)));
        else if (Character.isDigit(c)) {
          do ++j; while (j < l && Character.isDigit(s.charAt(j)));
          if (j < l && s.charAt(j) == 'L')
            ++j;
        } else
          ++j;
        String t = quickSubstring(s, i, j);
        i = j;
        return t;
      }
    };
  }

  static public Producer<String> javaTokC_noMLS_onReader(final BufferedReader r) {
    final class X implements Producer<String> {

      public StringBuilder buf = new StringBuilder();

      public char c, d, e = 'x';

      public X() {
        nc();
        nc();
        nc();
      }

      public void nc() {
        try {
          c = d;
          d = e;
          if (e == '\0')
            return;
          int i = r.read();
          e = i < 0 ? '\0' : i == '\0' ? '_' : (char) i;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public void ncSave() {
        if (c != '\0') {
          buf.append(c);
          nc();
        }
      }

      public String next() {
        while (c != '\0') {
          if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
            nc();
          else if (c == '/' && d == '*') {
            do nc(); while (c != '\0' && !(c == '*' && d == '/'));
            nc();
            nc();
          } else if (c == '/' && d == '/') {
            do nc(); while (c != '\0' && "\r\n".indexOf(c) < 0);
          } else
            break;
        }
        if (c == '\0')
          return null;
        if (c == '\'' || c == '"') {
          char opener = c;
          ncSave();
          while (c != '\0') {
            if (c == opener || c == '\n') {
              ncSave();
              break;
            } else if (c == '\\') {
              ncSave();
              ncSave();
            } else
              ncSave();
          }
        } else if (Character.isJavaIdentifierStart(c))
          do ncSave(); while (Character.isJavaIdentifierPart(c) || c == '\'');
        else if (Character.isDigit(c)) {
          do ncSave(); while (Character.isDigit(c));
          if (c == 'L')
            ncSave();
        } else
          ncSave();
        String t = buf.toString();
        buf.setLength(0);
        return t;
      }
    }
    return new X();
  }

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

  static public boolean structure_isMarker(String s, int i, int j) {
    if (i >= j)
      return false;
    if (s.charAt(i) != 'm')
      return false;
    ++i;
    while (i < j) {
      char c = s.charAt(i);
      if (c < '0' || c > '9')
        return false;
      ++i;
    }
    return true;
  }

  static public String internIfLongerThan(String s, int l) {
    return s == null ? null : l(s) >= l ? intern(s) : s;
  }

  static public char unquoteCharacter(String s) {
    assertTrue(s.startsWith("'") && s.length() > 1);
    return unquote("\"" + s.substring(1, s.endsWith("'") ? s.length() - 1 : s.length()) + "\"").charAt(0);
  }

  static public BigInteger parseBigInt(String s) {
    return new BigInteger(s);
  }

  static public float parseFloat(String s) {
    return Float.parseFloat(s);
  }

  static public boolean isLongConstant(String s) {
    if (!s.endsWith("L"))
      return false;
    s = s.substring(0, l(s) - 1);
    return isInteger(s);
  }

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

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

  static public 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 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 <A> A nuStubInnerObject(Class<A> c) {
    return nuStubInnerObject(c, null);
  }

  static public <A> A nuStubInnerObject(Class<A> c, Object classFinder) {
    try {
      Class outerType = getOuterClass(c, classFinder);
      Constructor m = c.getDeclaredConstructor(outerType);
      makeAccessible(m);
      return (A) m.newInstance(new Object[] { null });
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public 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 void setOptAllDyn(DynamicObject o, Map<String, Object> fields) {
    if (fields == null)
      return;
    HashMap<String, Field> fieldMap = instanceFieldsMap(o);
    for (Map.Entry<String, Object> e : fields.entrySet()) {
      String field = e.getKey();
      Object val = e.getValue();
      boolean has = fieldMap.containsKey(field);
      if (has)
        setOpt(o, field, val);
      else {
        o.fieldValues = syncMapPut2_createLinkedHashMap(o.fieldValues, intern(field), val);
      }
    }
  }

  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 pcallOpt_noArgs(Object o, String method) {
    try {
      callOpt_noArgs(o, method);
    } catch (Throwable __e) {
      _handleException(__e);
    }
  }

  static public int[] toIntArray(Collection<Integer> l) {
    int[] a = new int[l(l)];
    int i = 0;
    if (a.length != 0)
      for (int x : l) a[i++] = x;
    return a;
  }

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

  static public boolean jmatch(String pat, String s, Matches matches) {
    if (s == null)
      return false;
    return jmatch(pat, javaTok(s), matches);
  }

  static public boolean jmatch(String pat, List<String> toks) {
    return jmatch(pat, toks, null);
  }

  static public boolean jmatch(String pat, List<String> toks, Matches matches) {
    List<String> tokpat = javaTok(pat);
    String[] m = match2(tokpat, toks);
    if (m == null)
      return false;
    else {
      if (matches != null)
        matches.m = m;
      return true;
    }
  }

  static public boolean warn_on = true;

  static public ThreadLocal<List<String>> warn_warnings = new ThreadLocal();

  static public void warn(String s) {
    if (warn_on)
      print("Warning: " + s);
  }

  static public void warn(String s, List<String> warnings) {
    warn(s);
    if (warnings != null)
      warnings.add(s);
    addToCollection(warn_warnings.get(), s);
  }

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

  static public void assertVerbose(boolean b) {
    assertVerbose_value.set(b);
  }

  static public boolean assertVerbose() {
    return isTrue(assertVerbose_value.get());
  }

  static public <A> A assertEqualsVerbose(Object x, A y) {
    assertEqualsVerbose((String) null, x, y);
    return y;
  }

  static public <A> A assertEqualsVerbose(String msg, Object x, A y) {
    if (!eq(x, y)) {
      throw fail((msg != null ? msg + ": " : "") + (y) + " != " + (x));
    } else
      print("OK: " + (x));
    return y;
  }

  static public byte[] boolArrayToBytes(boolean[] a) {
    byte[] b = new byte[(l(a) + 7) / 8];
    for (int i = 0; i < l(a); i++) if (a[i])
      b[i / 8] |= 1 << (i & 7);
    return b;
  }

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

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

  static public <A, B> List<List<B>> levelTwoMap(Object f, Iterable<List<A>> l) {
    return mapTwoLevelsDown(f, l);
  }

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

  static public List<String> wordTok(String s) {
    return javaTokNPunctuationWithBrackets_cached(s);
  }

  static public Object pcallFunction(Object f, Object... args) {
    try {
      return callFunction(f, args);
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return null;
  }

  static public AutoCloseable tempLock(final 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 betterCIComparator_C betterCIComparator_instance;

  static public betterCIComparator_C betterCIComparator() {
    if (betterCIComparator_instance == null)
      betterCIComparator_instance = new betterCIComparator_C();
    return betterCIComparator_instance;
  }

  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 Comparator makeComparator(final Object f) {
    if (f instanceof Comparator)
      return (Comparator) f;
    return new Comparator() {

      public int compare(Object a, Object b) {
        return (Integer) callF(f, a, b);
      }
    };
  }

  static public List<String> allMethodNames(Object o) {
    Class c = _getClass(o);
    TreeSet<String> names = new TreeSet();
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) names.add(m.getName());
      c = c.getSuperclass();
    }
    return asList(names);
  }

  static public 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 Path toPath(File f) {
    return f == null ? null : f.toPath();
  }

  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 Map<String, String> singular_specials = litmap("children", "child", "images", "image", "chess", "chess");

  static public Set<String> singular_specials2 = litset("time", "machine", "line");

  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 (ewic(s, "ss"))
      return s + "es";
    if (ewic(s, "s"))
      return s;
    return s + "s";
  }

  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 "SmartTimerTask(" + 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 __0 = 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(__0);
        }
      }
    }
  }

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

  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, 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 == '\'' && 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 + 1 < l && !s.substring(j, j + 2).equals("]]"));
        j = Math.min(j + 2, l);
      } else if (c == '[' && d == '=' && i + 2 < l && s.charAt(i + 2) == '[') {
        do ++j; while (j + 2 < l && !s.substring(j, j + 3).equals("]=]"));
        j = Math.min(j + 3, l);
      } else
        ++j;
      tok.add(javaTok_substringC(s, i, j));
      ++n;
      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 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 List<String> tok_splitAtSlashes(String s) {
    return tok_splitAtSlash(s);
  }

  static public List<String> tok_splitAtSlashes(List<String> tok) {
    return tok_splitAtSlash(tok);
  }

  static public boolean allNempty(String... l) {
    for (String s : unnull(l)) if (empty(s))
      return false;
    return true;
  }

  static public boolean allNempty(Iterable<String> l) {
    for (String s : unnull(l)) if (empty(s))
      return false;
    return true;
  }

  static public <A> T3<A, A, A> listToTriple(List<A> l) {
    return l(l) != 3 ? null : triple(get(l, 0), get(l, 1), get(l, 2));
  }

  static public List<String> uncurlyAll(Collection<String> l) {
    return map("uncurly", l);
  }

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

  static public String javaDropAllComments(String s) {
    return join(javaDropAllComments(javaTok(s)));
  }

  static public List<String> javaDropAllComments(List<String> tok) {
    for (int i = 0; i < l(tok); i += 2) tok.set(i, tok_javaDropCommentsFromWhitespace(tok.get(i)));
    return tok;
  }

  static public 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 CancelPoint newCancelPoint() {
    return new CancelPoint();
  }

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

  static public List<String> javaTokNPunctuation_plusAsterisk(String s) {
    List<String> tok = javaTok(s);
    for (int i = 1; i < l(tok); i += 2) {
      int j = i;
      String t;
      while (j < l(tok) && l(t = tok.get(j)) == 1 && !Character.isLetterOrDigit(t.charAt(0)) && t.charAt(0) != '*') j += 2;
      if (j > i)
        replaceSubList(tok, i - 1, j, ll(joinSubList(tok, i - 1, j)));
    }
    return tok;
  }

  static public boolean cicAtOddPosition(List<String> l, String s) {
    int n = l(l);
    for (int i = 1; i < n; i += 2) if (eqic(l.get(i), s))
      return true;
    return false;
  }

  static public void printStructs(Object... params) {
    print(renderStructs(params));
  }

  static public List<List<String>> ai_spreadCertainIndices_2(List<String> tokPat, List<String> tokS, List<Integer> indices) {
    int extra = (l(tokS) - l(tokPat)) / 2;
    if (extra < 0 || empty(indices))
      return emptyList();
    List<List<String>> results = new ArrayList();
    for (List<Integer> spread : allSpreads(extra, l(indices))) {
      List<String> tok = new ArrayList();
      int pos = 0, iSpread = 0, iIndices = 0;
      for (int i = 0; i < l(tokPat); i++) if (!eq(get(indices, iIndices), i))
        tok.add(tokS.get(pos++));
      else {
        ++iIndices;
        int take = spread.get(iSpread++) * 2;
        tok.add(joinSubList(tokS, pos, pos + take + 1));
        pos += take + 1;
      }
      results.add(tok);
    }
    return results;
  }

  static public boolean match(String pat, String s) {
    return match3(pat, s);
  }

  static public boolean match(String pat, String s, Matches matches) {
    return match3(pat, s, matches);
  }

  static public boolean match(String pat, List<String> toks, Matches matches) {
    return match3(pat, toks, matches);
  }

  static public <A> boolean strictPutIC(Map<A, String> map, A key, String value) {
    if (!(map != null && key != null && value != null))
      return true;
    String old = map.get(key);
    if (old == null) {
      map.put(key, value);
      return true;
    }
    return eqic(old, value);
  }

  static public List<String> tok_combineCurlyBrackets_keep(List<String> tok) {
    List<String> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && eq(t, "{")) {
        int j = findEndOfCurlyBracketPart(tok, i);
        l.add(joinSubList(tok, i, j));
        i = j - 1;
      } else
        l.add(t);
    }
    return l;
  }

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

  static public List<File> hotwire_collectJars(File jar) {
    List<String> libIDs = hotwire_libraryIDsFromJar_deleteJarOnFail(jar);
    List<File> files = ll(jar);
    for (String libID : libIDs) files.add(loadLibraryOrSrcLib(libID));
    return files;
  }

  static public Class hotwire_finish(ClassLoader classLoader, String progID, String javaSource) {
    return hotwire_finish(classLoader, progID, javaSource, "main");
  }

  static public Class hotwire_finish(ClassLoader classLoader, String progID, String javaSource, String mainClass) {
    try {
      Class<?> theClass = classLoader.loadClass(mainClass);
      Class j = getJavaX();
      setOpt(theClass, "myJavaSource_code", javaSource);
      synchronized (j) {
        call(j, "setVars", theClass, progID);
        callOpt(j, "addInstance", progID, theClass);
      }
      hotwire_copyOver(theClass);
      vmBus_send("hotwireFinished", theClass, mc());
      return theClass;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Pair<File, String> compileSnippetThroughServer(String progID) {
    String transpiledSrc = getServerTranspiled2(progID);
    String md5 = md5(transpiledSrc + "\n" + progID);
    File jar = CompilerBot.getJarFile(md5);
    if (jar == null || jar.length() <= 22) {
      byte[] jarData = null;
      boolean dontLoad = false;
      IResourceLoader rl = vm_getResourceLoader();
      if (rl != null) {
        dontLoad = true;
        File jar2 = rl.getSnippetJar(progID, transpiledSrc);
        if (jar2 != null)
          return pair(jar2, transpiledSrc);
      }
      if (!dontLoad) {
        try {
          jarData = loadBinaryPage("http://www.botcompany.de/jar/" + psI(progID) + "?md5=" + md5(transpiledSrc));
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
      if (!isJAR(jarData)) {
        if (jarData != null) {
          print(bytesToHex(takeFirstOfByteArray(8, jarData)));
          print("fallback to CompilerBot: " + fromUtf8(takeFirstOfByteArray(80, jarData)));
        }
        return CompilerBot.compileSnippet2(progID);
      }
      saveBinaryFile(jar, jarData);
    }
    return pair(jar, transpiledSrc);
  }

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

  static public String codePointToString(int codePoint) {
    return new String(Character.toChars(codePoint));
  }

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

  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, min(a.length, b.length));
  }

  static public void arraycopy(Object src, int srcPos, Object dest, int destPos, int n) {
    if (n != 0)
      System.arraycopy(src, srcPos, dest, destPos, n);
  }

  static public <A> A[] arrayOfType(Class<A> type, int n) {
    return makeArray(type, n);
  }

  static public <A> A[] arrayOfType(int n, Class<A> type) {
    return arrayOfType(type, n);
  }

  static public List<String> getClassNames(Collection l) {
    List<String> out = new ArrayList();
    if (l != null)
      for (Object o : l) out.add(o == null ? null : getClassName(o));
    return out;
  }

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

  static public String imageServerLink(String md5OrID) {
    if (possibleMD5(md5OrID))
      return "https://botcompany.de/images/md5/" + md5OrID;
    return imageServerLink(parseSnippetID(md5OrID));
  }

  static public String imageServerLink(long id) {
    return "https://botcompany.de/images/" + id;
  }

  static public int indexOfIgnoreCase_manual(String a, String b) {
    int la = strL(a), lb = strL(b);
    if (la < lb)
      return -1;
    int n = la - lb;
    loop: for (int i = 0; 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 Object vm_generalMap_put(Object key, Object value) {
    return mapPutOrRemove(vm_generalMap(), key, value);
  }

  static public <A> Set<A> syncIdentityHashSet() {
    return (Set) synchronizedSet(identityHashSet());
  }

  static public Map syncHashMap() {
    return synchroHashMap();
  }

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

  static public String lastLine(String s) {
    s = dropSuffix("\n", s);
    s = dropSuffix("\r", s);
    int i = s.lastIndexOf('\n');
    return substring(s, i + 1);
  }

  static public <A> List<A> cloneSubList(List<A> l, int startIndex, int endIndex) {
    return newSubList(l, startIndex, endIndex);
  }

  static public <A> List<A> cloneSubList(List<A> l, int startIndex) {
    return newSubList(l, startIndex);
  }

  static public 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 int defaultTokenizerCacheSize() {
    return 1000;
  }

  static public List<String> javaTokNPunctuationWithBrackets_plusAsterisk(String s) {
    List<String> tok = javaTokWithBrackets(s);
    for (int i = 1; i < l(tok); i += 2) {
      int j = i;
      String t;
      while (j < l(tok) && l(t = tok.get(j)) == 1 && !Character.isLetterOrDigit(t.charAt(0)) && t.charAt(0) != '*') j += 2;
      if (j > i)
        replaceSubList(tok, i - 1, j, ll(joinSubList(tok, i - 1, j)));
    }
    return tok;
  }

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

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

  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 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 <A extends Throwable> A printException(A e) {
    printStackTrace(e);
    return e;
  }

  static public File localSnippetsDir() {
    return javaxDataDir("Personal Programs");
  }

  static public File localSnippetsDir(String sub) {
    return newFile(localSnippetsDir(), sub);
  }

  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 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) {
    if (files != null)
      for (File f : files) if (fileExists(f))
        return f;
    return null;
  }

  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 getComputerID_quick() {
    return computerID();
  }

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

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

  static public String tryToReadErrorStreamFromURLConnection(URLConnection conn) {
    try {
      if (conn instanceof HttpURLConnection)
        return stream2string(((HttpURLConnection) conn).getErrorStream());
      return null;
    } catch (Throwable __e) {
      return null;
    }
  }

  static public String htmlencode_forParams(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 == '>') {
        out.append("&#");
        out.append((int) c);
        out.append(';');
      } else
        out.append(c);
    }
    return out.toString();
  }

  static public File fileInSameDir(File f, String newName) {
    return newFile(parentFile(f), newName);
  }

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

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

  static public String hjavascript_src_snippet(String snippetID) {
    return tag("script", "", "src", snippetRawURL(snippetID));
  }

  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 Object mainBot() {
    return getMainBot();
  }

  static public String repeat(char c, int n) {
    n = Math.max(n, 0);
    char[] chars = new char[n];
    for (int i = 0; i < n; i++) chars[i] = c;
    return new String(chars);
  }

  static public <A> List<A> repeat(A a, int n) {
    n = Math.max(n, 0);
    List<A> l = new ArrayList(n);
    for (int i = 0; i < n; i++) l.add(a);
    return l;
  }

  static public <A> List<A> repeat(int n, A a) {
    return repeat(a, n);
  }

  static public 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 <A, B> Map<A, B> newWeakMap() {
    return newWeakHashMap();
  }

  static public <A> WeakReference<A> newWeakReference(A a) {
    return a == null ? null : new WeakReference(a);
  }

  static public Object[] asObjectArray(Collection l) {
    return toObjectArray(l);
  }

  static public File toFile(Object o) {
    if (o instanceof File)
      return (File) o;
    if (o instanceof String)
      return new File((String) o);
    throw fail("Not a file: " + o);
  }

  static public boolean isTrue_callF(Object condition, Object... args) {
    return isTrue(callF(condition, args));
  }

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

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

  static public String quoteUnlessIdentifierOrInteger(String s) {
    return quoteIfNotIdentifierOrInteger(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) {
    List<String> tok = javaTok(s);
    for (int i = 1; i < l(tok); i += 2) {
      String t = tok.get(i);
      if (t.startsWith("$") && isInteger(t.substring(1))) {
        String x = tokref.get(-1 + parseInt(t.substring(1)) * 2);
        tok.set(i, x);
      } else if (t.equals("\\")) {
        tok.set(i, "");
        i += 2;
      }
    }
    return join(tok);
  }

  static public void clearAllTokens(List<String> tok) {
    for (int i = 0; i < tok.size(); i++) tok.set(i, "");
  }

  static public void clearAllTokens(List<String> tok, int i, int j) {
    for (; i < j; i++) tok.set(i, "");
  }

  static public List<String> reTok(List<String> tok) {
    replaceCollection(tok, javaTok(tok));
    return tok;
  }

  static public List<String> reTok(List<String> tok, int i) {
    return reTok(tok, i, i + 1);
  }

  static public List<String> reTok(List<String> tok, int i, int j) {
    i = max(i & ~1, 0);
    j = min(l(tok), j | 1);
    if (i >= j)
      return tok;
    List<String> t = javaTok(joinSubList(tok, i, j));
    replaceListPart(tok, i, j, t);
    return tok;
  }

  static public TreeSet<String> toCaseInsensitiveSet_treeSet(Iterable<String> c) {
    if (isCISet(c))
      return (TreeSet) c;
    TreeSet<String> set = caseInsensitiveSet_treeSet();
    addAll(set, c);
    return set;
  }

  static public TreeSet<String> toCaseInsensitiveSet_treeSet(String... x) {
    TreeSet<String> set = caseInsensitiveSet_treeSet();
    addAll(set, x);
    return set;
  }

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

  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) {
    Class c = o.getClass();
    HashMap<String, Field> map;
    synchronized (getOpt_cache) {
      map = getOpt_cache.get(c);
      if (map == null)
        map = getOpt_makeCache(c);
    }
    return map;
  }

  static public Map<Class, Field[]> thisDollarOneFields_cache = newDangerousWeakHashMap();

  static public Field[] thisDollarOneFields(Class c) {
    synchronized (thisDollarOneFields_cache) {
      Field[] l = thisDollarOneFields_cache.get(c);
      if (l == null)
        thisDollarOneFields_cache.put(c, l = thisDollarOneFields_uncached(c));
      return l;
    }
  }

  static public Field[] thisDollarOneFields_uncached(Class c) {
    List<Field> fields = new ArrayList();
    do {
      for (Field f : c.getDeclaredFields()) if (f.getName().equals("this$1"))
        fields.add(makeAccessible(f));
      c = c.getSuperclass();
    } while (c != null);
    return toArray(new Field[l(fields)], fields);
  }

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

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

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

  static public <A, B> List<List<B>> mapTwoLevelsDown(Object f, Iterable<List<A>> l) {
    List<List<B>> out = new ArrayList();
    if (l != null)
      for (List<A> x : l) out.add((List<B>) (List) map(f, x));
    return out;
  }

  static public Map<String, List<String>> javaTokNPunctuationWithBrackets_cached_cache = synchronizedMRUCache(defaultTokenizerCacheSize());

  static public List<String> javaTokNPunctuationWithBrackets_cached(String s) {
    List<String> tok = javaTokNPunctuationWithBrackets_cached_cache.get(s);
    if (tok == null)
      javaTokNPunctuationWithBrackets_cached_cache.put(s, tok = javaTokNPunctuationWithBrackets(s));
    return tok;
  }

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

  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 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 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 List<VF1<Map>> _threadInfo_makers = synchroList();

  static public Object _threadInfo() {
    if (empty(_threadInfo_makers))
      return null;
    HashMap map = new HashMap();
    pcallFAll(_threadInfo_makers, map);
    return map;
  }

  static public List<VF1<Map>> _threadInheritInfo_retrievers = synchroList();

  static public void _threadInheritInfo(Object info) {
    if (info == null)
      return;
    pcallFAll(_threadInheritInfo_retrievers, (Map) info);
  }

  static public AutoCloseable tempActivity(Object r) {
    return null;
  }

  static public long fixTimestamp(long timestamp) {
    return timestamp > now() ? 0 : timestamp;
  }

  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 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 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_splitAtSlash(String s) {
    return tok_splitAtSlash(javaTok(s));
  }

  static public List<String> tok_splitAtSlash(List<String> tok) {
    List<String> l = new ArrayList();
    int i = 0;
    while (i < l(tok)) {
      if (i >= l(tok))
        break;
      int j = indexOf(tok, "/", i);
      if (j < 0)
        j = l(tok);
      l.add(trimJoin(tok.subList(i, j)));
      i = j + 1;
    }
    return l;
  }

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

  static public String tok_javaDropCommentsFromWhitespace(String s) {
    int l = l(s), j = 0;
    StringBuilder buf = new StringBuilder();
    while (j < l) {
      char c = s.charAt(j);
      char d = j + 1 >= l ? '\0' : s.charAt(j + 1);
      if (c == '/' && d == '*') {
        do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
        j = Math.min(j + 2, l);
      } else if (c == '/' && d == '/') {
        do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
      } else {
        buf.append(c);
        ++j;
      }
    }
    return str(buf);
  }

  static public List<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 String renderStructs(Object... params) {
    List<String> l = new ArrayList();
    if (odd(l(params)))
      l.add(addSuffix(str(first(params)), ":"));
    for (int i = l(params) & 1; i + 1 < l(params); i += 2) l.add(params[i] + "=" + sfu(params[i + 1]));
    return joinWithSpace(l);
  }

  static public class allSpreads_Data {

    public int n;

    public List<Integer> collecting;
  }

  static public class allSpreads_StackEntry {

    public int remaining, take;

    public int position;

    public Object step(List<allSpreads_StackEntry> stack, allSpreads_Data d) {
      if (position == 0) {
        if (l(d.collecting) >= d.n - 1) {
          List<Integer> result = listPlus(d.collecting, remaining);
          popLast(stack);
          return result;
        }
        position++;
      }
      if (position == 1) {
        if (take <= remaining) {
          d.collecting.add(take);
          allSpreads_StackEntry e = new allSpreads_StackEntry();
          e.remaining = remaining - take;
          stack.add(e);
          position++;
        } else
          popLast(stack);
      } else if (position == 2) {
        removeLast(d.collecting);
        take++;
        position = 1;
      }
      return null;
    }
  }

  static public IterableIterator<List<Integer>> allSpreads(final int toSpread, final int buckets) {
    final allSpreads_Data d = new allSpreads_Data();
    d.n = buckets;
    d.collecting = new ArrayList();
    final List<allSpreads_StackEntry> stack = new ArrayList();
    allSpreads_StackEntry e = new allSpreads_StackEntry();
    e.remaining = toSpread;
    stack.add(e);
    return iff(new F0<Object>() {

      public Object get() {
        try {
          while (nempty(stack)) {
            ping();
            {
              Object __1 = last(stack).step(stack, d);
              if (__1 != null)
                return __1;
            }
          }
          return endMarker();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "while (nempty(stack)) {\r\n      ping();\r\n      try object last(stack).step(sta...";
      }
    });
  }

  static public 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 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 List<String> hotwire_libraryIDsFromJar_deleteJarOnFail(File jar) {
    try {
      return hotwire_libraryIDsFromJar(jar);
    } catch (Throwable _e) {
      jar.delete();
      throw rethrow(_e);
    }
  }

  static public boolean loadLibraryOrSrcLib_srcLibsEnabled = true;

  static public ThreadLocal<Map<Long, File>> loadLibraryOrSrcLib_tempCache = new ThreadLocal();

  static public File loadLibraryOrSrcLib(String snippetID) {
    try {
      long id = parseSnippetID(snippetID);
      if (loadLibraryOrSrcLib_tempCache.get() != null) {
        File f = loadLibraryOrSrcLib_tempCache.get().get(id);
        if (f != null)
          return f;
      }
      boolean srcLib = loadLibraryOrSrcLib_srcLibsEnabled && isMarkedAsSrcLib(snippetID);
      if (srcLib) {
        File f = pairA(hotwire_compile(snippetID));
        mapPut(loadLibraryOrSrcLib_tempCache.get(), id, f);
      }
      File f = DiskSnippetCache_getLibrary(id);
      if (fileSize(f) != 0)
        return f;
      try {
        return loadDataSnippetToFile(snippetID);
      } catch (Throwable e) {
        if (loadLibraryOrSrcLib_srcLibsEnabled && nempty(loadSnippet(snippetID))) {
          markAsSrcLib(snippetID);
          return pairA(hotwire_compile(snippetID));
        }
        throw rethrow(e);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public 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 boolean getServerTranspiled2_allowLocalFallback = true, getServerTranspiled2_localFallbackVerbose = true;

  static public Map<String, String> getServerTranspiled2_tempCache;

  static public String getServerTranspiled2(String id) {
    IResourceLoader rl = vm_getResourceLoader();
    if (rl != null)
      return rl.getTranspiled(id);
    id = fsIOpt(id);
    String transpiled = mapGet(getServerTranspiled2_tempCache, id);
    if (transpiled != null)
      return transpiled;
    transpiled = loadCachedTranspilation(id);
    String md5 = null;
    if (machineIsOffline() || isOfflineMode() || isLocalSnippet(id))
      return transpiled;
    if (transpiled != null)
      md5 = md5(transpiled);
    String transpiledSrc;
    try {
      transpiledSrc = getServerTranspiled(formatSnippetID(id), md5);
    } catch (Throwable e) {
      if (!getServerTranspiled2_allowLocalFallback)
        rethrow(e);
      printExceptionShort(e);
      if (getServerTranspiled2_localFallbackVerbose)
        print("Fallback to local code");
      return transpiled;
    }
    if (eq(transpiledSrc, "SAME")) {
      if (!isTrue(loadPage_silent.get()))
        print("SAME");
      return mapPut_returnValue(getServerTranspiled2_tempCache, id, transpiled);
    }
    return mapPut_returnValue(getServerTranspiled2_tempCache, id, transpiledSrc);
  }

  static public 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 byte[] isJAR_magic = bytesFromHex("504B0304");

  static public boolean isJAR(byte[] data) {
    return byteArrayStartsWith(data, isJAR_magic);
  }

  static public boolean isJAR(File f) {
    return isJAR(loadBeginningOfBinaryFile(f, l(isJAR_magic)));
  }

  static public byte[] takeFirstOfByteArray(byte[] b, int n) {
    return subByteArray(b, 0, n);
  }

  static public byte[] takeFirstOfByteArray(int n, byte[] b) {
    return takeFirstOfByteArray(b, n);
  }

  static public String fromUtf8(byte[] bytes) {
    try {
      return bytes == null ? null : new String(bytes, "UTF-8");
    } 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 WeakReference<Object> creator_class;

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

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

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

  static public boolean possibleMD5(String s) {
    return isMD5(s);
  }

  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> synchronizedSet() {
    return synchroHashSet();
  }

  static public <A> Set<A> synchronizedSet(Set<A> set) {
    return Collections.synchronizedSet(set);
  }

  static public <A> Set<A> identityHashSet() {
    return Collections.newSetFromMap(new IdentityHashMap());
  }

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

  static public String joinNempties(String sep, Collection<String> strings) {
    return joinStrings(sep, strings);
  }

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

  static public File parentFile(File f) {
    return dirOfFile(f);
  }

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

  static public String snippetRawURL(String snippetID, String contentType) {
    return "https://www.botcompany.de:8443/serve/" + psI(snippetID) + htmlQuery("ct", contentType);
  }

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

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

  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) {
    dest.clear();
    dest.addAll(src);
  }

  static public void replaceListPart(List l, int i, int j, List l2) {
    replaceSublist(l, i, j, l2);
  }

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

  static public <A> A[] toArray(Collection 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 boolean reflection_isForbiddenMethod(Method m) {
    return m.getDeclaringClass() == Object.class && eqOneOf(m.getName(), "finalize", "clone", "registerNatives");
  }

  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 Map<String, List<String>> javaTokNPunctuationWithBrackets_cache = synchronizedMRUCache(1000);

  static public List<String> javaTokNPunctuationWithBrackets(String s) {
    List<String> tok = javaTokNPunctuationWithBrackets_cache.get(s);
    if (tok == null)
      javaTokNPunctuationWithBrackets_cache.put(s, tok = javaTokNPunctuationWithBrackets_uncached(s));
    return tok;
  }

  static public List<String> javaTokNPunctuationWithBrackets_uncached(String s) {
    return tok_combineRoundOrCurlyBrackets_keep(javaTokNPunctuation_bracketsInC(s));
  }

  static public int numberOfFunctionArguments(Object f) {
    if (f instanceof F0)
      return 0;
    if (f instanceof F1)
      return 1;
    if (f instanceof F2)
      return 2;
    if (f instanceof VF1)
      return 1;
    if (f instanceof VF2)
      return 2;
    if (f instanceof VF3)
      return 3;
    if (f instanceof String)
      return numberOfMethodArguments(mc(), (String) f);
    return numberOfMethodArguments(f, "get");
  }

  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 String trimJoin(List<String> s) {
    return trim(join(s));
  }

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

  static public <A> List<A> dropFirstAndLast(int m, int n, List<A> l) {
    return cloneSubList(l, m, l(l) - n);
  }

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

  static public String dropFirstAndLast(String s) {
    return substring(s, 1, l(s) - 1);
  }

  static public <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 void removeLast(List l) {
    if (!l.isEmpty())
      l.remove(l(l) - 1);
  }

  static public void removeLast(List l, int n) {
    removeSubList(l, l(l) - n);
  }

  static public void removeLast(int n, List l) {
    removeLast(l, n);
  }

  static public <A> IterableIterator<A> iff(Object f) {
    return iteratorFromFunction_withEndMarker(f);
  }

  static public IterableIterator iff(F0 f) {
    return iteratorFromFunction_withEndMarker(f);
  }

  static public <A> IterableIterator iff(IF0 f) {
    return iteratorFromFunction_withEndMarker(f);
  }

  static public Object endMarker() {
    return iteratorFromFunction_endMarker;
  }

  static public 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 List<String> hotwire_libraryIDsFromJar(File jar) {
    String dehlibs = unnull(loadTextFileFromZip(jar, "libraries"));
    return regexpExtractAll("\\d+", dehlibs);
  }

  static public boolean isMarkedAsSrcLib(String snippetID) {
    if (snippetID == null)
      return false;
    IResourceLoader rl = vm_getResourceLoader();
    if (rl != null)
      return isJavaxCompilableSnippetType(rl.getSnippetType(snippetID));
    return fileExists(javaxCodeDir("srclibs/" + psI(snippetID)));
  }

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

  static public File DiskSnippetCache_file(long snippetID) {
    return new File(getGlobalCache(), "data_" + snippetID + ".jar");
  }

  public static File DiskSnippetCache_getLibrary(long snippetID) throws IOException {
    File file = DiskSnippetCache_file(snippetID);
    return file.exists() ? file : null;
  }

  public static void DiskSnippetCache_putLibrary(long snippetID, byte[] data) throws IOException {
    saveBinaryFile(DiskSnippetCache_file(snippetID), data);
  }

  static public byte[] loadDataSnippetImpl(String snippetID) throws IOException {
    byte[] data;
    try {
      URL url = new URL(dataSnippetLink(snippetID));
      print("Loading library: " + hideCredentials(url));
      try {
        data = loadBinaryPage(url.openConnection());
      } catch (RuntimeException e) {
        data = null;
      }
      if (data == null || data.length == 0) {
        url = new URL(tb_mainServer() + "/blobs/" + parseSnippetID(snippetID));
        print("Loading library: " + hideCredentials(url));
        data = loadBinaryPage(url.openConnection());
      }
      print("Bytes loaded: " + data.length);
    } catch (FileNotFoundException e) {
      throw new IOException("Binary snippet #" + snippetID + " not found or not public");
    }
    return data;
  }

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

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

  static public File loadDataSnippetToFile(String snippetID) {
    try {
      snippetID = fsI(snippetID);
      IResourceLoader rl = vm_getResourceLoader();
      if (rl != null)
        return rl.loadLibrary(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("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 void markAsSrcLib(String snippetID) {
    saveTextFile(javaxCodeDir("srclibs/" + psI(snippetID)), "");
  }

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

  static public String fsIOpt(String s) {
    return formatSnippetIDOpt(s);
  }

  static public String loadCachedTranspilation(String id) {
    try {
      return loadTextFilePossiblyGZipped(getCachedTranspilationFile(id));
    } catch (Throwable __e) {
      return null;
    }
  }

  static public boolean machineIsOffline() {
    return isFalse(callF(vmGeneralMap_get("areWeOnline")));
  }

  static public boolean isOfflineMode() {
    return eq("1", trim(loadProgramTextFile("#1005806", "offline-mode")));
  }

  static public boolean isLocalSnippet(String snippetID) {
    return isLocalSnippetID(snippetID);
  }

  static public boolean isLocalSnippet(long snippetID) {
    return isLocalSnippetID(snippetID);
  }

  static public String getServerTranspiled(String snippetID) {
    return getServerTranspiled(snippetID, null);
  }

  static public boolean getServerTranspiled_printStackTrace = false;

  static public String getServerTranspiled(String snippetID, String expectedMD5) {
    try {
      if (getServerTranspiled_printStackTrace)
        printStackTrace();
      long id = parseSnippetID(snippetID);
      String text = loadPage_utf8(tb_mainServer() + "/tb-int/get-transpiled.php?raw=1&withlibs=1&id=" + id + "&utf8=1" + (l(expectedMD5) > 1 ? "&md5=" + urlencode(expectedMD5) : "") + standardCredentials());
      if (nempty(text) && neq(text, "SAME"))
        saveTranspiledCode(snippetID, text);
      return text;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void printExceptionShort(Throwable e) {
    print(exceptionToStringShort(e));
  }

  static public <A, B> B mapPut_returnValue(Map<A, B> map, A key, B value) {
    mapPut(map, key, value);
    return value;
  }

  static public <A> A println(A a) {
    return print(a);
  }

  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 byte[] subByteArray(byte[] b, int start) {
    return subByteArray(b, start, l(b));
  }

  static public byte[] subByteArray(byte[] b, int start, int end) {
    start = max(start, 0);
    end = min(end, l(b));
    if (start == 0 && end == l(b))
      return b;
    if (start >= end)
      return new byte[0];
    byte[] x = new byte[end - start];
    System.arraycopy(b, start, x, 0, end - start);
    return x;
  }

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

  static public <A> Set<A> synchroHashSet() {
    return Collections.synchronizedSet(new HashSet<A>());
  }

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

  static public String joinStrings(String sep, String... strings) {
    return joinStrings(sep, Arrays.asList(strings));
  }

  static public String joinStrings(String sep, Collection<String> strings) {
    StringBuilder buf = new StringBuilder();
    for (String s : unnull(strings)) if (nempty(s)) {
      if (nempty(buf))
        buf.append(sep);
      buf.append(s);
    }
    return str(buf);
  }

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

  static public File dirOfFile(File f) {
    return f == null ? null : f.getParentFile();
  }

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

  static public List<String> javaTokNPunctuation_bracketsInC(String s) {
    List<String> tok = javaTok(s);
    for (int i = 1; i < l(tok); i += 2) {
      int j = i;
      String t;
      char c;
      while (j < l(tok) && l(t = tok.get(j)) == 1 && !Character.isLetterOrDigit(c = t.charAt(0)) && "{}()".indexOf(c) < 0) j += 2;
      if (j > i)
        replaceSubList(tok, i - 1, j, ll(joinSubList(tok, i - 1, j)));
    }
    return tok;
  }

  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 <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 <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> parse3(String s) {
    return dropPunctuation(javaTokPlusPeriod(s));
  }

  static public String loadTextFileFromZip(File inZip, String fileName) {
    return loadTextFileFromZipFile(inZip, fileName);
  }

  static public List<String> regexpExtractAll(String pat, String s) {
    if (s == null)
      return null;
    Matcher m = regexpMatcher(pat, s);
    List<String> out = new ArrayList();
    while (m.find()) out.add(m.group());
    return out;
  }

  static public boolean isJavaxCompilableSnippetType(int type) {
    return isJavaxCompilableSnippetTypeExceptInclude(type) || type == javaxIncludeSnippetType();
  }

  static public File javaxCodeDir_dir;

  static public File javaxCodeDir() {
    return javaxCodeDir_dir != null ? javaxCodeDir_dir : new File(userHome(), "JavaX-Code");
  }

  static public File javaxCodeDir(String sub) {
    return newFile(javaxCodeDir(), sub);
  }

  static public String dataSnippetLink(String snippetID) {
    long id = parseSnippetID(snippetID);
    if (id >= 1100000 && id < 1200000)
      return imageServerURL() + id;
    if (id >= 1400000 && id < 1500000)
      return "http://butter.botcompany.de:8080/files/" + id + "?_pass=" + muricaPassword();
    if (id >= 1200000 && id < 1300000) {
      String pw = muricaPassword();
      if (empty(pw))
        throw fail("Please set 'murica password by running #1008829");
      return "http://butter.botcompany.de:8080/1008823/raw/" + id + "?_pass=" + pw;
    } else
      return "http://eyeocr.sourceforge.net/filestore/filestore.php?cmd=serve&file=blob_" + id + "&contentType=application/binary";
  }

  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 String loadTextFilePossiblyGZipped(String fileName) {
    return loadTextFilePossiblyGZipped(fileName, null);
  }

  static public String loadTextFilePossiblyGZipped(String fileName, String defaultContents) {
    File gz = new File(fileName + ".gz");
    return gz.exists() ? loadGZTextFile(gz) : loadTextFile(fileName, defaultContents);
  }

  static public String loadTextFilePossiblyGZipped(File fileName) {
    return loadTextFilePossiblyGZipped(fileName, null);
  }

  static public String loadTextFilePossiblyGZipped(File fileName, String defaultContents) {
    return loadTextFilePossiblyGZipped(fileName.getPath(), defaultContents);
  }

  static public File getCachedTranspilationFile(String id) {
    return newFile(getCodeProgramDir(id), "Transpilation");
  }

  static public Object vmGeneralMap_get(Object key) {
    return vm_generalMap_get(key);
  }

  static public String loadProgramTextFile(String name) {
    return loadTextFile(getProgramFile(name));
  }

  static public String loadProgramTextFile(String progID, String name) {
    return loadTextFile(getProgramFile(progID, name));
  }

  static public String loadProgramTextFile(String progID, String name, String defaultText) {
    return loadTextFile(getProgramFile(progID, name), defaultText);
  }

  static public String loadPage_utf8(URL url) {
    return loadPage_utf8(url.toString());
  }

  static public String loadPage_utf8(String url) {
    AutoCloseable __0 = tempSetTL(loadPage_charset, "UTF-8");
    try {
      return loadPage(url);
    } finally {
      _close(__0);
    }
  }

  static public String loadPage_utf8(URLConnection con, URL url, boolean addHeaders) throws IOException {
    AutoCloseable __1 = tempSetTL(loadPage_charset, "UTF-8");
    try {
      return loadPage(con, url, addHeaders);
    } finally {
      _close(__1);
    }
  }

  static public void saveTranspiledCode(String progID, String code) {
    File dir = getCodeProgramDir(progID);
    new File(dir, "Transpilation").delete();
    saveGZTextFile(new File(dir, "Transpilation.gz"), code);
  }

  static public 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 boolean isLowerHexString(String s) {
    for (int i = 0; i < l(s); i++) {
      char c = s.charAt(i);
      if (c >= '0' && c <= '9' || c >= 'a' && c <= 'f') {
      } else
        return false;
    }
    return true;
  }

  static public String readerToString(Reader r) {
    try {
      try {
        StringBuilder buf = new StringBuilder();
        int n = 0;
        while (true) {
          int ch = r.read();
          if (ch < 0)
            break;
          buf.append((char) ch);
          ++n;
        }
        return buf.toString();
      } finally {
        r.close();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  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 loadTextFileFromZipFile(File inZip, String fileName) {
    try {
      if (!fileExists(inZip))
        return null;
      try {
        ZipFile zip = new ZipFile(inZip);
        try {
          return loadTextFileFromZipFile(zip, fileName);
        } finally {
          _close(zip);
        }
      } catch (Throwable e) {
        throw fail(f2s(inZip), e);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String loadTextFileFromZipFile(ZipFile zip, String fileName) {
    try {
      ZipEntry entry = zip.getEntry(fileName);
      if (entry == null)
        return null;
      InputStream fin = zip.getInputStream(entry);
      try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        copyStream(fin, baos);
        return fromUTF8(baos.toByteArray());
      } finally {
        _close(fin);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isJavaxCompilableSnippetTypeExceptInclude(int type) {
    return isJavaxApplicationSnippetType(type) || isJavaxModuleSnippetType(type) || type == snippetType_dynModule();
  }

  static public int javaxIncludeSnippetType() {
    return 42;
  }

  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()));
  }

  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(total, 100000))));
        total += n;
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void renameFile_assertTrue(File a, File b) {
    try {
      if (!a.exists())
        throw fail("Source file not found: " + f2s(a));
      if (b.exists())
        throw fail("Target file exists: " + f2s(b));
      mkdirsForFile(b);
      if (!a.renameTo(b))
        throw fail("Can't rename " + f2s(a) + " to " + f2s(b));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String loadGZTextFile(File file) {
    try {
      if (!file.isFile())
        return null;
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      InputStream fis = new FileInputStream(file);
      GZIPInputStream gis = newGZIPInputStream(fis);
      try {
        byte[] buffer = new byte[1024];
        int len;
        while ((len = gis.read(buffer)) != -1) {
          baos.write(buffer, 0, len);
        }
      } finally {
        fis.close();
      }
      baos.close();
      return fromUtf8(baos.toByteArray());
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public File getCodeProgramDir() {
    return getCodeProgramDir(getProgramID());
  }

  static public File getCodeProgramDir(String snippetID) {
    return new File(javaxCodeDir(), formatSnippetID(snippetID));
  }

  static public File getCodeProgramDir(long snippetID) {
    return getCodeProgramDir(formatSnippetID(snippetID));
  }

  static public void saveGZTextFile(File file, String contents) {
    try {
      File parentFile = file.getParentFile();
      if (parentFile != null)
        parentFile.mkdirs();
      String tempFileName = file.getPath() + "_temp";
      File tempFile = new File(tempFileName);
      if (contents != null) {
        if (tempFile.exists())
          try {
            String saveName = tempFileName + ".saved." + now();
            copyFile(tempFile, new File(saveName));
          } catch (Throwable e) {
            printStackTrace(e);
          }
        FileOutputStream fileOutputStream = newFileOutputStream(tempFile.getPath());
        GZIPOutputStream gos = new GZIPOutputStream(fileOutputStream);
        OutputStreamWriter outputStreamWriter = new OutputStreamWriter(gos, "UTF-8");
        PrintWriter printWriter = new PrintWriter(outputStreamWriter);
        printWriter.print(contents);
        printWriter.close();
        gos.close();
        fileOutputStream.close();
      }
      if (file.exists() && !file.delete())
        throw new IOException("Can't delete " + file.getPath());
      if (contents != null)
        if (!tempFile.renameTo(file))
          throw new IOException("Can't rename " + tempFile + " to " + file);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static public String fromUTF8(byte[] bytes) {
    return fromUtf8(bytes);
  }

  static public boolean isJavaxApplicationSnippetType(int type) {
    return type == snippetType_javaxSource() || type == snippetType_JavaXDesktop();
  }

  static public boolean isJavaxModuleSnippetType(int type) {
    return type == snippetType_javaxModule() || type == snippetType_javaxDesktopModule();
  }

  static public int snippetType_dynModule() {
    return 57;
  }

  static public File muricaPasswordFile() {
    return new File(javaxSecretDir(), "murica/muricaPasswordFile");
  }

  static public int roundDownTo(int x, int n) {
    return x / n * n;
  }

  static public long roundDownTo(long x, long n) {
    return x / n * n;
  }

  static public int snippetType_javaxSource() {
    return 34;
  }

  static public int snippetType_JavaXDesktop() {
    return 55;
  }

  static public int snippetType_javaxModule() {
    return 54;
  }

  static public int snippetType_javaxDesktopModule() {
    return 58;
  }

  static abstract public class VF1<A> implements IVF1<A> {

    public abstract void get(A a);
  }

  static abstract public class VF3<A, B, C> {

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

  static abstract public class VF2<A, B> {

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

  static public class Var<A> implements IVar<A> {

    public Var() {
    }

    public Var(A v) {
      this.v = v;
    }

    public A v;

    public synchronized void set(A a) {
      if (v != a) {
        v = a;
        notifyAll();
      }
    }

    public synchronized A get() {
      return v;
    }

    public synchronized boolean has() {
      return v != null;
    }

    public synchronized void clear() {
      v = null;
    }

    public String toString() {
      return str(get());
    }
  }

  static public class DefunctClassLoader {
  }

  static public class PositionalTokenIndex {

    public List<List<List<String>>> sorts = new ArrayList();

    public boolean dirty = false;

    public PositionalTokenIndex() {
    }

    public PositionalTokenIndex(Iterable<List<String>> toks) {
      addAll(toks);
    }

    public void addAll(Iterable<List<String>> toks) {
      for (List<String> tok : unnull(toks)) add(tok);
    }

    public void add(List<String> tok) {
      for (int i = 1; i < l(tok); i += 2) {
        List<List<String>> idx = listGetOrCreate_List(sorts, i / 2);
        idx.add(tok);
      }
      dirty = true;
    }

    final public void sort() {
      for (int i = 0; i < l(sorts); i++) {
        int j = i * 2 + 1;
        sortInPlaceByCalculatedFieldIC(sorts.get(i), new F1<List<String>, String>() {

          public String get(List<String> tok) {
            try {
              return tok.get(j);
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "tok.get(j)";
          }
        });
      }
      dirty = false;
    }

    public List<List<String>> byToken(int i, String t) {
      clean();
      List<List<String>> list = get(sorts, i);
      if (list == null)
        return null;
      int start = binarySearchForStart(list, i, t);
      if (start < 0)
        return null;
      int end = binarySearchForEnd(list, i, t, start);
      return subList(list, start, end);
    }

    final public int binarySearchForStart(List<List<String>> list, int position, String t) {
      int low = 0, high = list.size() - 1;
      while (low <= high) {
        int mid = (low + high) >>> 1;
        String token = list.get(mid).get(position * 2 + 1);
        int cmp = compareIC(token, t);
        if (cmp < 0)
          low = mid + 1;
        else if (cmp > 0)
          high = mid - 1;
        else if (mid == 0 || !eqic(list.get(mid - 1).get(position * 2 + 1), t))
          return mid;
        else
          high = mid - 1;
      }
      return -1;
    }

    final public int binarySearchForEnd(List<List<String>> list, int position, String t, int start) {
      int low = start + 1, high = list.size() - 1;
      while (low <= high) {
        int mid = (low + high) >>> 1;
        String token = list.get(mid).get(position * 2 + 1);
        if (eqic(token, t))
          low = mid + 1;
        else if (mid - 1 == start || eqic(list.get(mid - 1).get(position * 2 + 1), t))
          return mid;
        else
          high = mid - 1;
      }
      return low;
    }

    public List<List<String>> fullList() {
      return first(sorts);
    }

    public void clean() {
      if (dirty)
        sort();
    }
  }

  static abstract public class TokCondition {

    abstract public boolean get(List<String> tok, int i);
  }

  abstract static public class ALQLLine {

    public String toString() {
      return stdToString(this);
    }
  }

  static public class ALQLReturn extends ALQLLine {

    public String var;

    public ALQLReturn() {
    }

    public ALQLReturn(String var) {
      this.var = var;
    }

    public boolean equals(Object o) {
      return stdEq2(this, o);
    }

    public int hashCode() {
      return stdHash2(this);
    }
  }

  static public class ALQLReturnTuple extends ALQLLine implements IFieldsToList {

    public List<String> vars;

    public ALQLReturnTuple() {
    }

    public ALQLReturnTuple(List<String> vars) {
      this.vars = vars;
    }

    public String toString() {
      return "ALQLReturnTuple(" + vars + ")";
    }

    public boolean equals(Object o) {
      if (!(o instanceof ALQLReturnTuple))
        return false;
      ALQLReturnTuple x = (ALQLReturnTuple) o;
      return eq(vars, x.vars);
    }

    public int hashCode() {
      int h = -1460093678;
      h = boostHashCombine(h, _hashCode(vars));
      return h;
    }

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

  static public class ALQLTriple extends ALQLLine {

    public T3<String, String, String> triple;

    public ALQLTriple() {
    }

    public ALQLTriple(T3<String, String, String> triple) {
      this.triple = triple;
    }

    public ALQLTriple(String a, String b, String c) {
      triple = t3(a, b, c);
    }

    public boolean equals(Object o) {
      return stdEq2(this, o);
    }

    public int hashCode() {
      return stdHash2(this);
    }
  }

  static public class ALQLLockStatement extends ALQLLine {

    public T3<String, String, String> triple;

    public ALQLLockStatement() {
    }

    public ALQLLockStatement(T3<String, String, String> triple) {
      this.triple = triple;
    }

    public ALQLLockStatement(String a, String b, String c) {
      triple = t3(a, b, c);
    }

    public boolean equals(Object o) {
      return stdEq2(this, o);
    }

    public int hashCode() {
      return stdHash2(this);
    }
  }

  static public class ALQLPage extends ALQLLine {

    public String page, matchMethod;

    public ALQLPage() {
    }

    public ALQLPage(String page, String matchMethod) {
      this.matchMethod = matchMethod;
      this.page = page;
    }

    public boolean equals(Object o) {
      return stdEq2(this, o);
    }

    public int hashCode() {
      return stdHash2(this);
    }
  }

  static public class ALQLSlice extends ALQLLine {

    public String slice;

    public List<ALQLLine> contents;

    public ALQLSlice() {
    }

    public ALQLSlice(String slice, List<ALQLLine> contents) {
      this.contents = contents;
      this.slice = slice;
    }

    public boolean equals(Object o) {
      return stdEq2(this, o);
    }

    public int hashCode() {
      return stdHash2(this);
    }
  }

  static public class GlobalID {

    public long a;

    public int b;

    public GlobalID() {
    }

    public GlobalID(String id) {
      assertGlobalID(id);
      BigInteger value = bigint(0);
      for (int i = 0; i < l(id); i++) value = plus(mul(value, 26), charDiff(id.charAt(i), 'a'));
      a = value.longValue();
      value = value.shiftRight(64);
      b = value.shortValue();
    }

    public String toString() {
      BigInteger value = bigint(b);
      value = value.shiftLeft(32);
      value = plus(value, (a >> 32) & 0xFFFFFFFFL);
      value = value.shiftLeft(32);
      value = plus(value, a & 0xFFFFFFFFL);
      return bigintToGlobalID(value);
    }

    public boolean equals(Object o) {
      if (!(o instanceof GlobalID))
        return false;
      return ((GlobalID) o).a == a && ((GlobalID) o).b == b;
    }

    public int hashCode() {
      return (int) a;
    }
  }

  static public class CancelToCancelPoint extends QuickException {

    public CancelPoint cp;

    public CancelToCancelPoint(CancelPoint cp) {
      this.cp = cp;
    }
  }

  static public class ConceptFieldIndexDesc<A extends Concept, Val> implements IConceptIndex, IFieldIndex<A, Val> {

    public Class<A> cc;

    public String field;

    public HashMap<A, Val> objectToValue = new HashMap();

    public MultiMap<Val, A> valueToObject;

    public ConceptFieldIndexDesc() {
      valueToObject = treeMultiMap(reverseOrder());
    }

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

    public ConceptFieldIndexDesc(Concepts concepts, Class<A> cc, String field) {
      this();
      this.field = field;
      this.cc = cc;
      concepts.addConceptIndex(this);
      for (A c : list(concepts, cc)) updateImpl(c);
      concepts.addFieldIndex(cc, field, this);
    }

    public void update(Concept c) {
      if (!isInstance(cc, c))
        return;
      updateImpl(c);
    }

    synchronized public void updateImpl(Concept c) {
      Val newValue = (Val) (cget(c, field));
      Val oldValue = objectToValue.get(c);
      if (newValue == null || newValue != oldValue) {
        valueToObject.remove(oldValue, (A) c);
        valueToObject.put(newValue, (A) c);
        objectToValue.put((A) c, newValue);
      }
    }

    public synchronized void remove(Concept c) {
      if (!isInstance(cc, c))
        return;
      Val value = (Val) (cget(c, field));
      objectToValue.remove(c);
      valueToObject.remove(value, (A) c);
    }

    synchronized public A get(Val value) {
      return valueToObject.getFirst(value);
    }

    public synchronized List<A> getAll(Val value) {
      return valueToObject.get(value);
    }

    public synchronized List<Val> allValues() {
      return cloneKeys_noSync(valueToObject.data);
    }

    public IterableIterator<A> objectIterator() {
      return navigableMultiMapValuesIterator(valueToObject);
    }

    public synchronized MultiSet<Val> allValues_multiSet() {
      return multiMapToMultiSet(valueToObject);
    }
  }

  static public class ReliableSingleThread implements Runnable {

    public Object runnable;

    public boolean trigger = false;

    public Thread thread;

    public String name = "Single Thread";

    public F0<AutoCloseable> enter;

    public ReliableSingleThread(Object runnable) {
      this.runnable = runnable;
    }

    public void trigger() {
      go();
    }

    synchronized public void go() {
      trigger = true;
      if (!running()) {
        AutoCloseable __0 = callF(enter);
        try {
          thread = startThread(name, new Runnable() {

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

            public String toString() {
              return "AutoCloseable __1 = callF(enter); try {\r\n        _run();\r\n      } finally { _...";
            }
          });
        } finally {
          _close(__0);
        }
      }
    }

    public void run() {
      go();
    }

    public void get() {
      go();
    }

    synchronized public boolean running() {
      return thread != null;
    }

    public void triggerAndWait() {
      trigger();
      while (running()) sleep(1);
    }

    public void _run() {
      while (licensed()) {
        synchronized (this) {
          if (!trigger) {
            thread = null;
            break;
          }
          trigger = false;
        }
        pcallF(runnable);
      }
    }

    synchronized public void cancel() {
      cancelAndInterruptThread(thread);
      thread = null;
    }

    synchronized public boolean triggered() {
      return trigger;
    }

    public void cleanMeUp() {
      cancel();
    }
  }

  static public class PKIKeyPair implements IFieldsToList {

    public String privateKey;

    public String publicKey;

    public PKIKeyPair() {
    }

    public PKIKeyPair(String privateKey, String publicKey) {
      this.publicKey = publicKey;
      this.privateKey = privateKey;
    }

    public boolean equals(Object o) {
      if (!(o instanceof PKIKeyPair))
        return false;
      PKIKeyPair x = (PKIKeyPair) o;
      return eq(privateKey, x.privateKey) && eq(publicKey, x.publicKey);
    }

    public int hashCode() {
      int h = -1731104693;
      h = boostHashCombine(h, _hashCode(privateKey));
      h = boostHashCombine(h, _hashCode(publicKey));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { privateKey, publicKey };
    }

    public String toString() {
      return "PKIKeyPair([secret], " + quote(publicKey) + ")";
    }
  }

  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 "Entry(" + 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 PositionalTokenIndex2 {

    public List<PositionalTokenIndex> indices = new ArrayList();

    public PositionalTokenIndex2() {
    }

    public PositionalTokenIndex2(Iterable<List<String>> toks) {
      addAll(toks);
    }

    public void addAll(Iterable<List<String>> toks) {
      for (List<String> tok : unnull(toks)) add(tok);
    }

    public void add(List<String> tok) {
      listGetOrCreate_full(PositionalTokenIndex.class, indices, l(tok) / 2).add(tok);
    }

    public List<List<String>> byToken(int i, String t, int tokenCount) {
      PositionalTokenIndex idx = get(indices, tokenCount);
      return idx == null ? null : idx.byToken(i, t);
    }

    public PositionalTokenIndex indexForTokenCount(int tokenCount) {
      return get(indices, tokenCount);
    }

    public void clean() {
      for (PositionalTokenIndex idx : indices) idx.clean();
    }
  }

  static public class ConceptFieldIndex<A extends Concept, Val> implements IConceptIndex, IFieldIndex<A, Val>, IConceptCounter {

    public Class<A> cc;

    public String field;

    public HashMap<A, Val> objectToValue = new HashMap();

    public MultiMap<Val, A> valueToObject = new MultiMap();

    public ConceptFieldIndex() {
    }

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

    public ConceptFieldIndex(Concepts concepts, Class<A> cc, String field) {
      this.field = field;
      this.cc = cc;
      concepts.addConceptIndex(this);
      for (A c : list(concepts, cc)) updateImpl(c);
      concepts.addFieldIndex(cc, field, this);
    }

    public void update(Concept c) {
      if (!isInstance(cc, c))
        return;
      updateImpl(c);
    }

    synchronized public void updateImpl(Concept c) {
      Val newValue = (Val) (cget(c, field));
      Val oldValue = objectToValue.get(c);
      if (newValue == null || newValue != oldValue) {
        valueToObject.remove(oldValue, (A) c);
        valueToObject.put(newValue, (A) c);
        objectToValue.put((A) c, newValue);
      }
    }

    public synchronized void remove(Concept c) {
      if (!isInstance(cc, c))
        return;
      Val value = (Val) (cget(c, field));
      objectToValue.remove(c);
      valueToObject.remove(value, (A) c);
    }

    synchronized public A get(Val value) {
      return valueToObject.getFirst(value);
    }

    public synchronized List<A> getAll(Val value) {
      return valueToObject.get(value);
    }

    public synchronized List<Val> allValues() {
      return cloneKeys_noSync(valueToObject.data);
    }

    public synchronized MultiSet<Val> allValues_multiSet() {
      return multiMapToMultiSet(valueToObject);
    }

    public Class<? extends Concept> conceptClass() {
      return cc;
    }

    public int countConcepts() {
      return l(objectToValue);
    }

    public Collection<Concept> allConcepts() {
      return (Collection) keys(objectToValue);
    }
  }

  static abstract public class F0<A> {

    abstract public A get();
  }

  static abstract public class F1<A, B> {

    abstract public B get(A a);
  }

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

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

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

  static abstract public class F2<A, B, C> {

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

  static public interface MakesBufferedImage {

    public BufferedImage getBufferedImage();

    public int getWidth();

    public int getHeight();
  }

  static public class PKI {

    static public String getProvider() {
      return isAndroid() ? "BC" : "SUN";
    }

    public static boolean verifySignature(byte[] publicKey, byte[] signature, String file) throws InvalidKeyException, NoSuchProviderException, NoSuchAlgorithmException, IOException, SignatureException, InvalidKeySpecException {
      Signature sig = initPublicSignature(publicKey);
      FileInputStream datafis = new FileInputStream(file);
      BufferedInputStream bufin = new BufferedInputStream(datafis);
      byte[] buffer = new byte[1024];
      while (bufin.available() != 0) {
        int len = bufin.read(buffer);
        sig.update(buffer, 0, len);
      }
      bufin.close();
      return sig.verify(signature);
    }

    public static boolean verifySignature(byte[] publicKey, byte[] signature, byte[] data) {
      try {
        Signature sig = initPublicSignature(publicKey);
        sig.update(data);
        return sig.verify(signature);
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    static public Signature initPublicSignature(byte[] publicKey) throws NoSuchAlgorithmException, NoSuchProviderException, InvalidKeySpecException, InvalidKeyException {
      Signature sig = Signature.getInstance("SHA1withDSA", getProvider());
      PublicKey pub = KeyFactory.getInstance("DSA", getProvider()).generatePublic(new X509EncodedKeySpec(publicKey));
      sig.initVerify(pub);
      return sig;
    }

    public static byte[] sign(String file, byte[] privateKey) {
      try {
        Signature dsa = initSignature(privateKey);
        FileInputStream fis = new FileInputStream(file);
        BufferedInputStream bufin = new BufferedInputStream(fis);
        byte[] buffer = new byte[1024];
        int len;
        while ((len = bufin.read(buffer)) >= 0) dsa.update(buffer, 0, len);
        bufin.close();
        return dsa.sign();
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public static byte[] sign(byte[] data, byte[] privateKey) {
      try {
        Signature dsa = initSignature(privateKey);
        dsa.update(data);
        return dsa.sign();
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    static public Signature initSignature(byte[] privateKey) throws NoSuchAlgorithmException, NoSuchProviderException, InvalidKeySpecException, InvalidKeyException {
      Signature dsa = Signature.getInstance("SHA1withDSA", getProvider());
      EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(privateKey);
      PrivateKey priv = KeyFactory.getInstance("DSA", getProvider()).generatePrivate(keySpec);
      dsa.initSign(priv);
      return dsa;
    }

    public static KeyPair makeKeyPair() throws NoSuchAlgorithmException, NoSuchProviderException {
      KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA", getProvider());
      SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
      keyGen.initialize(1024, random);
      return keyGen.generateKeyPair();
    }

    public static boolean makeStandardKeyPairIfNecessary() {
      try {
        File publicKeyPath = getStandardPublicKeyPath();
        File privateKeyPath = getStandardPrivateKeyPath();
        if (!publicKeyPath.exists()) {
          print("PKI: Making standard key pair");
          KeyPair keyPair = makeKeyPair();
          byte[] privateKey = keyPair.getPrivate().getEncoded();
          print("PKI: Private key hex (debug) - " + bytesToHex(privateKey));
          saveTextFile(privateKeyPath, privateKeyToString(privateKey));
          String publicKey = publicKeyToString(keyPair.getPublic());
          saveTextFile(publicKeyPath, publicKey);
          print("PKI: Standard key pair made!");
          print();
          printInfo();
          return true;
        }
        return false;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    static public void printInfo() {
      print("PKI: Machine's public key: " + publicKeyToString(getStandardPublicKey()));
      print("PKI: Machine's private key in: " + getStandardPrivateKeyPath());
      print("PKI: Machine's public key also in: " + getStandardPublicKeyPath());
      print("PKI: User's public key: " + publicKeyToString(userPublicKey()));
      print("PKI: User's private key in: " + userPrivateKeyPath());
      print("PKI: User's public key also in: " + userPublicKeyPath());
    }

    public static File getStandardPrivateKeyPath() {
      return new File(getSecretProgramDir("#1001547"), "Computer-Private-Key");
    }

    public static File userPublicKeyPath() {
      return new File(getProgramDir("#1001547"), "User-Public-Key");
    }

    public static File userPrivateKeyPath() {
      return new File(getSecretProgramDir("#1001547"), "User-Private-Key");
    }

    public static File getStandardPublicKeyPath() {
      return new File(getProgramDir("#1001547"), "Computer-Public-Key");
    }

    public static byte[] getStandardPrivateKey() {
      makeStandardKeyPairIfNecessary();
      return privateKeyFromString(loadTextFile(getStandardPrivateKeyPath()));
    }

    public static byte[] getStandardPublicKey() {
      makeStandardKeyPairIfNecessary();
      return publicKeyFromString(loadTextFile(getStandardPublicKeyPath()));
    }

    public static byte[] userPrivateKey() {
      makeUserKeyPairIfNecessary();
      return privateKeyFromString(loadTextFile(userPrivateKeyPath()));
    }

    public static byte[] userPublicKey() {
      makeUserKeyPairIfNecessary();
      return publicKeyFromString(loadTextFile(userPublicKeyPath()));
    }

    static public String publicKeyToString(PublicKey publicKey) {
      return publicKeyToString(publicKey.getEncoded());
    }

    public static String privateKeyToString(PrivateKey privateKey) {
      return privateKeyToString(privateKey.getEncoded());
    }

    public static byte[] publicKeyFromString(String key) {
      return base64decode(dropPrefixMandatory("publickey:", trim(key)));
    }

    public static byte[] privateKeyFromString(String key) {
      return base64decode(dropPrefixMandatory("privatekey:", trim(key)));
    }

    public static byte[] signatureFromString(String key) {
      return base64decode(key);
    }

    public static byte[] dataFromString(String text) {
      return toUtf8(text);
    }

    public static String signatureToString(byte[] signature) {
      return base64encode(signature);
    }

    public static String publicKeyToString(byte[] key) {
      return "publickey:" + base64encode(key);
    }

    public static String privateKeyToString(byte[] key) {
      return "privatekey:" + base64encode(key);
    }

    static public boolean makeUserKeyPairIfNecessary() {
      try {
        File publicKeyPath = userPublicKeyPath();
        File privateKeyPath = userPrivateKeyPath();
        if (!publicKeyPath.exists()) {
          print("PKI: Making user key pair");
          KeyPair keyPair = makeKeyPair();
          byte[] privateKey = keyPair.getPrivate().getEncoded();
          print("PKI: Private key hex (debug) - " + bytesToHex(privateKey));
          saveTextFile(privateKeyPath, privateKeyToString(privateKey));
          String publicKey = publicKeyToString(keyPair.getPublic());
          saveTextFile(publicKeyPath, publicKey);
          print("PKI: User key pair made!");
          print();
          printInfo();
          return true;
        }
        return false;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }
  }

  static public int concepts_internStringsLongerThan = 10;

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

  static public interface Derefable {

    public Concept get();
  }

  static public interface IConceptIndex {

    public void update(Concept c);

    public void remove(Concept c);
  }

  static public interface IFieldIndex<A extends Concept, Val> {

    public List<A> getAll(Val val);

    public List<Val> allValues();

    public MultiSet<Val> allValues_multiSet();
  }

  static public class Concepts {

    public Map<Long, Concept> concepts = synchroTreeMap();

    public HashMap<Class, Object> perClassData = new HashMap();

    public Map miscMap;

    public String programID;

    public long idCounter;

    volatile public long changes, changesWritten, lastChange;

    volatile public java.util.Timer autoSaver;

    volatile public boolean savingConcepts, dontSave, noXFullGrab;

    public boolean vmBusSend = true;

    public boolean initialSave = true;

    public int autoSaveInterval = -1000;

    public boolean useGZIP = true, quietSave;

    public ReentrantLock lock = new ReentrantLock(true);

    public ReentrantLock saverLock = new ReentrantLock(true);

    public long lastSaveTook, lastSaveWas;

    public float maxAutoSavePercentage = 10;

    public List<IConceptIndex> conceptIndices;

    public Map<Class<? extends Concept>, Map<String, IFieldIndex>> fieldIndices;

    public Map<Class<? extends Concept>, Map<String, IFieldIndex>> ciFieldIndices;

    public List saveActions = synchroList();

    public Object classFinder = _defaultClassFinder();

    public List onAllChanged = synchroList();

    transient public Object saveWrapper;

    public Concepts() {
    }

    public Concepts(String programID) {
      this.programID = programID;
    }

    synchronized public long internalID() {
      do {
        ++idCounter;
      } while (hasConcept(idCounter));
      return idCounter;
    }

    public void initProgramID() {
      if (programID == null)
        programID = getDBProgramID();
    }

    public Concepts load() {
      return load(false);
    }

    public Concepts safeLoad() {
      return load(true);
    }

    public Concepts load(boolean allDynamic) {
      initProgramID();
      try {
        if (tryToGrab(allDynamic))
          return this;
      } catch (Throwable e) {
        if (!exceptionMessageContains(e, "no xfullgrab"))
          printShortException(e);
        print("xfullgrab failed - loading DB of " + programID + " from disk");
      }
      return loadFromDisk(allDynamic);
    }

    public Concepts loadFromDisk() {
      return loadFromDisk(false);
    }

    public Concepts loadFromDisk(boolean allDynamic) {
      if (nempty(concepts))
        clearConcepts();
      restoreLatestBackupIfConceptsFileEmpty(programID, "doIt", true);
      long time = now();
      Map<Long, Concept> _concepts = concepts;
      readLocally2_allDynamic.set(allDynamic);
      AutoCloseable __1 = tempSetTL(readLocally2_classFinder, classFinder);
      try {
        readLocally2(this, programID, "concepts");
        Map<Long, Concept> __concepts = concepts;
        concepts = _concepts;
        concepts.putAll(__concepts);
        int l = readLocally_stringLength;
        int tokrefs = unstructure_tokrefs;
        assignConceptsToUs();
        done("Loaded " + n(l(concepts), "concepts"), time);
        if (fileSize(getProgramFile(programID, "idCounter.structure")) != 0)
          readLocally2(this, programID, "idCounter");
        else
          calcIdCounter();
        if (initialSave)
          allChanged();
        return this;
      } finally {
        _close(__1);
      }
    }

    public Concepts loadConcepts() {
      return load();
    }

    public boolean tryToGrab(boolean allDynamic) {
      if (sameSnippetID(programID, getDBProgramID()))
        return false;
      RemoteDB db = connectToDBOpt(programID);
      try {
        if (db != null) {
          loadGrab(db.fullgrab(), allDynamic);
          return true;
        }
        return false;
      } finally {
        _close(db);
      }
    }

    public Concepts load(String grab) {
      return loadGrab(grab, false);
    }

    public Concepts safeLoad(String grab) {
      return loadGrab(grab, true);
    }

    public Concepts loadGrab(String grab, boolean allDynamic) {
      clearConcepts();
      DynamicObject_loading.set(true);
      try {
        Map<Long, Concept> map = (Map) unstructure(grab, allDynamic, classFinder);
        concepts.putAll(map);
        assignConceptsToUs();
        for (long l : map.keySet()) idCounter = max(idCounter, l);
      } finally {
        DynamicObject_loading.set(null);
      }
      allChanged();
      return this;
    }

    public void assignConceptsToUs() {
      for (Concept c : values(concepts)) c._concepts = this;
      for (Concept c : values(concepts)) callOpt_noArgs(c, "_doneLoading2");
    }

    public String progID() {
      return programID == null ? getDBProgramID() : programID;
    }

    public Concept getConcept(String id) {
      return empty(id) ? null : getConcept(parseLong(id));
    }

    public Concept getConcept(long id) {
      return (Concept) concepts.get((long) id);
    }

    public Concept getConcept(RC ref) {
      return ref == null ? null : getConcept(ref.longID());
    }

    public boolean hasConcept(long id) {
      return concepts.containsKey((long) id);
    }

    public void deleteConcept(long id) {
      Concept c = getConcept(id);
      if (c == null)
        print("Concept " + id + " not found");
      else
        c.delete();
    }

    public void calcIdCounter() {
      long id_ = 0;
      for (long id : keys(concepts)) id_ = max(id_, id);
      idCounter = id_ + 1;
      saveLocally2(this, programID, "idCounter");
    }

    public void saveConceptsIfDirty() {
      saveConcepts();
    }

    public void save() {
      saveConcepts();
    }

    public void saveConcepts() {
      if (dontSave)
        return;
      initProgramID();
      saverLock.lock();
      savingConcepts = true;
      long start = now(), time;
      try {
        String s = null;
        long _changes = changes;
        if (_changes == changesWritten)
          return;
        final File f = getProgramFile(programID, useGZIP ? "concepts.structure.gz" : "concepts.structure");
        lock.lock();
        long fullTime = now();
        try {
          saveLocally2(this, programID, "idCounter");
          if (useGZIP) {
            callRunnableWithWrapper(saveWrapper, new Runnable() {

              public void run() {
                try {
                  saveGZStructureToFile(f, cloneMap(concepts));
                } catch (Exception __e) {
                  throw rethrow(__e);
                }
              }

              public String toString() {
                return "saveGZStructureToFile(f, cloneMap(concepts));";
              }
            });
            getProgramFile(programID, "concepts.structure").delete();
          } else
            s = structure(cloneMap(concepts));
        } finally {
          lock.unlock();
        }
        while (nempty(saveActions)) pcallF(popFirst(saveActions));
        changesWritten = _changes;
        if (!useGZIP) {
          time = now() - start;
          if (!quietSave)
            print("Saving " + toM(l(s)) + "M chars (" + time + " ms)");
          start = now();
          saveTextFile(f, javaTokWordWrap(s));
          getProgramFile(programID, "concepts.structure.gz").delete();
        }
        copyFile(f, getProgramFile(programID, "backups/concepts.structure" + (useGZIP ? ".gz" : "") + ".backup" + ymd() + "-" + formatInt(hours(), 2)));
        time = now() - start;
        if (!quietSave)
          print(programID + ": Saved " + toK(f.length()) + " K, " + n(concepts, "concepts") + " (" + time + " ms)");
        lastSaveWas = fullTime;
        lastSaveTook = now() - fullTime;
      } finally {
        savingConcepts = false;
        saverLock.unlock();
      }
    }

    public void _autoSaveConcepts() {
      if (autoSaveInterval < 0 && maxAutoSavePercentage != 0) {
        long pivotTime = Math.round(lastSaveWas + lastSaveTook * 100.0 / maxAutoSavePercentage);
        if (now() < pivotTime) {
          return;
        }
      }
      try {
        saveConcepts();
      } catch (Throwable e) {
        print("Concept save failed, will try again: " + e);
      }
    }

    public void clearConcepts() {
      concepts.clear();
      allChanged();
    }

    public void allChanged() {
      synchronized (this) {
        ++changes;
        lastChange = sysNow();
      }
      if (vmBusSend)
        vmBus_send("conceptsChanged", this);
      pcallFAll(onAllChanged);
    }

    synchronized public void autoSaveConcepts() {
      if (autoSaver == null) {
        if (isTransient())
          throw fail("Can't persist transient database");
        autoSaver = doEvery_daemon(abs(autoSaveInterval), new Runnable() {

          public void run() {
            try {
              _autoSaveConcepts();
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "_autoSaveConcepts()";
          }
        });
      }
    }

    public void cleanMeUp() {
      boolean shouldSave = autoSaver != null;
      if (autoSaver != null) {
        autoSaver.cancel();
        autoSaver = null;
      }
      while (savingConcepts) sleepInCleanUp(10);
      if (shouldSave)
        saveConceptsIfDirty();
    }

    public Map<Long, String> getIDsAndNames() {
      Map<Long, String> map = new HashMap();
      Map<Long, Concept> cloned = cloneMap(concepts);
      for (long id : keys(cloned)) map.put(id, cloned.get(id).className);
      return map;
    }

    public void deleteConcepts(List l) {
      if (l != null)
        for (Object o : cloneList(l)) if (o instanceof Long) {
          Concept c = concepts.get(o);
          if (c != null)
            c.delete();
        } else if (o instanceof Concept)
          ((Concept) o).delete();
        else
          warn("Can't delete " + getClassName(o));
    }

    public <A extends Concept> A conceptOfType(Class<A> type) {
      IConceptCounter counter = conceptCounterForClass(type);
      if (counter != null)
        return (A) first(counter.allConcepts());
      return firstOfType(allConcepts(), type);
    }

    public <A extends Concept> List<A> conceptsOfType(Class<A> type) {
      IConceptCounter counter = conceptCounterForClass(type);
      if (counter != null)
        return (List<A>) cloneList(counter.allConcepts());
      return filterByType(allConcepts(), type);
    }

    public <A extends Concept> List<A> listConcepts(Class<A> type) {
      return conceptsOfType(type);
    }

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

    public List<Concept> list(String type) {
      return conceptsOfType(type);
    }

    public List<Concept> conceptsOfType(String type) {
      return filterByDynamicType(allConcepts(), "main$" + type);
    }

    public boolean hasConceptOfType(Class<? extends Concept> type) {
      return hasType(allConcepts(), type);
    }

    public void persistConcepts() {
      loadConcepts();
      autoSaveConcepts();
    }

    public void conceptPersistence() {
      persistConcepts();
    }

    public Concepts persist() {
      persistConcepts();
      return this;
    }

    public void persist(Integer interval) {
      if (interval != null)
        autoSaveInterval = interval;
      persist();
    }

    public <A extends Concept> A ensureHas(Class<A> c, Runnable r) {
      A a = conceptOfType(c);
      if (a == null) {
        r.run();
        a = conceptOfType(c);
        if (a == null)
          throw fail("Concept not made by " + r + ": " + shortClassName(c));
      }
      return a;
    }

    public void ensureHas(Class<? extends Concept> c1, Class<? extends Concept> c2, Object func) {
      for (Concept a : conceptsOfType(c1)) {
        Concept b = findBackRef(a, c2);
        if (b == null) {
          callF(func, a);
          b = findBackRef(a, c2);
          if (b == null)
            throw fail("Concept not made by " + func + ": " + shortClassName(c2));
        }
      }
    }

    public void forEvery(Class<? extends Concept> type, Object func) {
      for (Concept c : conceptsOfType(type)) callF(func, c);
    }

    public int deleteAll(Class<? extends Concept> type) {
      List<Concept> l = (List) conceptsOfType(type);
      for (Concept c : l) c.delete();
      return l(l);
    }

    public Collection<Concept> allConcepts() {
      synchronized (concepts) {
        return new ArrayList(values(concepts));
      }
    }

    public IConceptCounter conceptCounterForClass(Class<? extends Concept> c) {
      for (IFieldIndex idx : values(mapGet(fieldIndices, c))) if (idx instanceof IConceptCounter)
        return ((IConceptCounter) idx);
      for (IFieldIndex idx : values(mapGet(ciFieldIndices, c))) if (idx instanceof IConceptCounter)
        return ((IConceptCounter) idx);
      return null;
    }

    public <A extends Concept> int countConcepts(Class<A> c, Object... params) {
      if (empty(params)) {
        IConceptCounter counter = conceptCounterForClass(c);
        if (counter != null)
          return counter.countConcepts();
        return l(list(c));
      }
      int n = 0;
      for (A x : list(c)) if (checkConceptFields(x, params))
        ++n;
      return n;
    }

    public int countConcepts(String c, Object... params) {
      if (empty(params))
        return l(list(c));
      int n = 0;
      for (Concept x : list(c)) if (checkConceptFields(x, params))
        ++n;
      return n;
    }

    public int countConcepts() {
      return l(concepts);
    }

    synchronized public void addConceptIndex(IConceptIndex index) {
      if (conceptIndices == null)
        conceptIndices = new ArrayList();
      conceptIndices.add(index);
    }

    synchronized public void removeConceptIndex(IConceptIndex index) {
      if (conceptIndices == null)
        return;
      conceptIndices.remove(index);
      if (empty(conceptIndices))
        conceptIndices = null;
    }

    synchronized public void addFieldIndex(Class<? extends Concept> c, String field, IFieldIndex index) {
      if (fieldIndices == null)
        fieldIndices = new HashMap();
      Map<String, IFieldIndex> map = fieldIndices.get(c);
      if (map == null)
        fieldIndices.put(c, map = new HashMap());
      map.put(field, index);
    }

    synchronized public IFieldIndex getFieldIndex(Class<? extends Concept> c, String field) {
      if (fieldIndices == null)
        return null;
      Map<String, IFieldIndex> map = fieldIndices.get(c);
      return map == null ? null : map.get(field);
    }

    synchronized public void addCIFieldIndex(Class<? extends Concept> c, String field, IFieldIndex index) {
      if (ciFieldIndices == null)
        ciFieldIndices = new HashMap();
      Map<String, IFieldIndex> map = ciFieldIndices.get(c);
      if (map == null)
        ciFieldIndices.put(c, map = new HashMap());
      map.put(field, index);
    }

    synchronized public IFieldIndex getCIFieldIndex(Class<? extends Concept> c, String field) {
      if (ciFieldIndices == null)
        return null;
      Map<String, IFieldIndex> map = ciFieldIndices.get(c);
      return map == null ? null : map.get(field);
    }

    public RC xnew(String name, Object... values) {
      return new RC(cnew(name, values));
    }

    public void xset(long id, String field, Object value) {
      xset(new RC(id), field, value);
    }

    public void xset(RC c, String field, Object value) {
      if (value instanceof RC)
        value = getConcept((RC) value);
      cset(getConcept(c), field, value);
    }

    public Object xget(long id, String field) {
      return xget(new RC(id), field);
    }

    public Object xget(RC c, String field) {
      return xgetPost(cget(getConcept(c), field));
    }

    public Object xgetPost(Object o) {
      o = deref(o);
      if (o instanceof Concept)
        return new RC((Concept) o);
      return o;
    }

    public void xdelete(long id) {
      xdelete(new RC(id));
    }

    public void xdelete(RC c) {
      getConcept(c).delete();
    }

    public void xdelete(List<RC> l) {
      for (RC c : l) xdelete(c);
    }

    public List<RC> xlist() {
      return map("toPassRef", allConcepts());
    }

    public List<RC> xlist(String className) {
      return map("toPassRef", conceptsOfType(className));
    }

    public boolean isTransient() {
      return eq(programID, "-");
    }

    public String xfullgrab() {
      if (noXFullGrab)
        throw fail("no xfullgrab (DB too large)");
      Lock __0 = lock();
      lock(__0);
      try {
        if (changes == changesWritten && !isTransient())
          return loadConceptsStructure(programID);
        return structure(cloneMap(concepts));
      } finally {
        unlock(__0);
      }
    }

    public void xshutdown() {
      cleanKillVM();
    }

    public long xchangeCount() {
      return changes;
    }

    public int xcount() {
      return countConcepts();
    }

    public void register(Concept c) {
      if (c._concepts == this)
        return;
      if (c._concepts != null)
        throw fail("Can't re-register");
      c._concepts = this;
      c.id = internalID();
      c.created = now();
      concepts.put((long) c.id, c);
      c.change();
    }

    public void conceptChanged(Concept c) {
      allChanged();
      if (conceptIndices != null)
        for (IConceptIndex index : conceptIndices) index.update(c);
    }

    public boolean hasUnsavedData() {
      return changes != changesWritten || savingConcepts;
    }
  }

  static public class Concept extends DynamicObject {

    transient public Concepts _concepts;

    public long id;

    public long created, _modified;

    public List<Ref> refs;

    public List<Ref> backRefs;

    public Concept(String className) {
      super(className);
      _created();
    }

    public Concept() {
      if (!_loading()) {
        _created();
      }
    }

    public Concept(boolean unlisted) {
      if (!unlisted)
        _created();
    }

    static public boolean loading() {
      return _loading();
    }

    static public boolean _loading() {
      return dynamicObjectIsLoading();
    }

    public void _created() {
      if (!isTrue(concepts_unlisted.get()))
        db_mainConcepts().register(this);
    }

    public class Ref<A extends Concept> {

      public A value;

      public Ref() {
        if (!dynamicObjectIsLoading())
          refs = addDyn(refs, this);
      }

      public Ref(A value) {
        this.value = value;
        refs = addDyn(refs, this);
        index();
      }

      public Concept concept() {
        return Concept.this;
      }

      public A get() {
        return value;
      }

      public boolean has() {
        return value != null;
      }

      public void set(A a) {
        if (a == value)
          return;
        unindex();
        value = a;
        index();
      }

      public void set(Ref<A> ref) {
        set(ref.get());
      }

      public void clear() {
        set((A) null);
      }

      public void index() {
        if (value != null)
          value._addBackRef(this);
        change();
      }

      public void unindex() {
        if (value != null)
          value._removeBackRef(this);
      }

      public void change() {
        Concept.this.change();
      }
    }

    public class RefL<A extends Concept> extends AbstractList<A> {

      public List<Ref<A>> l = new ArrayList();

      public A set(int i, A o) {
        A prev = l.get(i).get();
        l.get(i).set(o);
        return prev;
      }

      public void add(int i, A o) {
        l.add(i, new Ref(o));
      }

      public A get(int i) {
        return l.get(i).get();
      }

      public A remove(int i) {
        return l.remove(i).get();
      }

      public int size() {
        return l.size();
      }

      public boolean contains(Object o) {
        if (o instanceof Concept)
          for (Ref<A> r : l) if (eq(r.get(), o))
            return true;
        return super.contains(o);
      }
    }

    public void delete() {
      for (Ref r : unnull(refs)) r.unindex();
      refs = null;
      for (Ref r : cloneList(backRefs)) r.set((Concept) null);
      backRefs = null;
      if (_concepts != null) {
        _concepts.concepts.remove((long) id);
        _concepts.allChanged();
        if (_concepts.conceptIndices != null)
          for (IConceptIndex index : _concepts.conceptIndices) index.remove(this);
        _concepts = null;
      }
      id = 0;
    }

    public BaseXRef export() {
      return new BaseXRef(_concepts.progID(), id);
    }

    public void change() {
      _modified = now();
      _change_withoutUpdatingModifiedField();
    }

    public void _change_withoutUpdatingModifiedField() {
      if (_concepts != null)
        _concepts.conceptChanged(this);
    }

    public void _change() {
      change();
    }

    public String _programID() {
      return _concepts == null ? getDBProgramID() : _concepts.progID();
    }

    public void _addBackRef(Concept.Ref ref) {
      backRefs = addDyn(backRefs, ref);
    }

    public void _removeBackRef(Concept.Ref ref) {
      backRefs = removeDyn(backRefs, ref);
    }

    public void _setField(String field, Object value) {
      cset(this, field, value);
    }

    public void _setFields(Object... values) {
      cset(this, values);
    }

    public Concepts concepts() {
      return _concepts;
    }
  }

  static public class RC {

    transient public Object owner;

    public String id;

    public RC() {
    }

    public RC(long id) {
      this.id = str(id);
    }

    public RC(Object owner, long id) {
      this.id = str(id);
      this.owner = owner;
    }

    public RC(Concept c) {
      this(c.id);
    }

    public long longID() {
      return parseLong(id);
    }

    public String toString() {
      return id;
    }

    transient public RemoteDB db;

    public String getString(String field) {
      return db.xS(this, field);
    }

    public Object get(String field) {
      return db.xget(this, field);
    }

    public void set(String field, Object value) {
      db.xset(this, field, value);
    }
  }

  static public class BaseXRef {

    public String programID;

    public long id;

    public BaseXRef() {
    }

    public BaseXRef(String programID, long id) {
      this.id = id;
      this.programID = programID;
    }

    public boolean equals(Object o) {
      if (!(o instanceof BaseXRef))
        return false;
      BaseXRef r = (BaseXRef) o;
      return eq(programID, r.programID) && eq(id, r.id);
    }

    public int hashCode() {
      return programID.hashCode() + (int) id;
    }
  }

  static public class XRef extends Concept {

    public BaseXRef ref;

    public XRef() {
    }

    public XRef(BaseXRef ref) {
      this.ref = ref;
      _doneLoading2();
    }

    public void _doneLoading2() {
      getIndex().put(ref, this);
    }

    public HashMap<BaseXRef, XRef> getIndex() {
      return getXRefIndex(_concepts);
    }
  }

  static synchronized public HashMap<BaseXRef, XRef> getXRefIndex(Concepts concepts) {
    HashMap cache = (HashMap) concepts.perClassData.get(XRef.class);
    if (cache == null)
      concepts.perClassData.put(XRef.class, cache = new HashMap());
    return cache;
  }

  static public XRef lookupOrCreateXRef(BaseXRef ref) {
    XRef xref = getXRefIndex(db_mainConcepts()).get(ref);
    if (xref == null)
      xref = new XRef(ref);
    return xref;
  }

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

  static public void loadAndAutoSaveConcepts() {
    db_mainConcepts().persist();
  }

  static public void loadAndAutoSaveConcepts(int interval) {
    db_mainConcepts().persist(interval);
  }

  static public RC toPassRef(Concept c) {
    return new RC(c);
  }

  static public interface IF0<A> {

    public A get();
  }

  static abstract public class CloseableIterableIterator<A> extends IterableIterator<A> implements AutoCloseable {

    public void close() throws Exception {
    }
  }

  static public interface IFieldsToList {

    public Object[] _fieldsToList();
  }

  static public interface IF2<A, B, C> {

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

  static public class ConceptFieldIndexCI<A extends Concept> implements IConceptIndex, IFieldIndex<A, String>, IConceptCounter {

    public Class<A> cc;

    public String field;

    public HashMap<A, String> objectToValue = new HashMap();

    public MultiSetMap<String, A> valueToObject = ciMultiSetMap();

    public ConceptFieldIndexCI() {
    }

    public ConceptFieldIndexCI(Class<A> cc, String field) {
      this(db_mainConcepts(), cc, field);
    }

    public ConceptFieldIndexCI(Concepts concepts, Class<A> cc, String field) {
      this.field = field;
      this.cc = cc;
      concepts.addConceptIndex(this);
      for (A c : list(concepts, cc)) updateImpl(c);
      concepts.addCIFieldIndex(cc, field, this);
    }

    public void update(Concept c) {
      if (!isInstance(cc, c))
        return;
      updateImpl(c);
    }

    synchronized public void updateImpl(Concept c) {
      String newValue = (String) (cget(c, field));
      String oldValue = objectToValue.get(c);
      if (newValue == null || newValue != oldValue) {
        valueToObject.remove(oldValue, (A) c);
        valueToObject.put(newValue, (A) c);
        objectToValue.put((A) c, newValue);
      }
    }

    public synchronized void remove(Concept c) {
      if (!isInstance(cc, c))
        return;
      String value = (String) (cget(c, field));
      objectToValue.remove(c);
      valueToObject.remove(value, (A) c);
    }

    synchronized public A get(String value) {
      return valueToObject.getFirst(value);
    }

    public synchronized List<A> getAll(String value) {
      return cloneList(valueToObject.get(value));
    }

    public Class<? extends Concept> conceptClass() {
      return cc;
    }

    public int countConcepts() {
      return l(objectToValue);
    }

    public Collection<Concept> allConcepts() {
      return (Collection) keys(objectToValue);
    }

    public synchronized List<String> allValues() {
      return cloneKeys_noSync(valueToObject.data);
    }

    public synchronized MultiSet<String> allValues_multiSet() {
      return multiSetMapToMultiSet(valueToObject);
    }

    public IterableIterator<A> objectIterator() {
      return navigableMultiSetMapValuesIterator(valueToObject);
    }
  }

  static public interface Producer<A> {

    public A next();
  }

  static public interface IF1<A, B> {

    public B get(A a);
  }

  static public interface IVF1<A> {

    public void get(A a);
  }

  static public class ConceptsLoadedOnDemand {

    public Map<String, Concepts> loaded = new HashMap();

    public List onCaseLoaded;

    public List onUnloadingCase;

    public Lock lock = lock();

    public Concepts get(String caseID, Object extraInfo) {
      return conceptsForCase(caseID, extraInfo);
    }

    public Concepts getIfLoaded(String caseID) {
      Lock __0 = lock;
      lock(__0);
      try {
        return loaded.get(unnull(caseID));
      } finally {
        unlock(__0);
      }
    }

    public Concepts conceptsForCase(String caseID, Object extraInfo) {
      Lock __1 = lock;
      lock(__1);
      try {
        caseID = unnull(caseID);
        if (loaded.containsKey(caseID))
          return assertNotNull("Concepts load error", loaded.get(caseID));
        String id = dbID(caseID);
        print("Loading concepts for case " + id);
        Concepts cc = new Concepts(id);
        cc.persist();
        loaded.put(caseID, cc);
        pcallFAll(onCaseLoaded, caseID, extraInfo, cc);
        return cc;
      } finally {
        unlock(__1);
      }
    }

    public String dbID(String caseID) {
      return combineWithSlash(getDBProgramID(), caseID);
    }

    public void cleanMeUp() {
      cleanUpAndClear(loaded);
    }

    public void onCaseLoaded(VF3<String, Object, Concepts> f) {
      onCaseLoaded = listCreateAndAdd(onCaseLoaded, f);
    }

    public void onUnloadingCase(VF2<String, Concepts> f) {
      onUnloadingCase = listCreateAndAdd(onUnloadingCase, f);
    }

    public void unloadCase(String caseID) {
      Lock __2 = lock;
      lock(__2);
      try {
        caseID = unnull(caseID);
        Concepts cc = loaded.get(caseID);
        if (cc != null) {
          pcallFAll(onUnloadingCase, caseID, cc);
          cleanUp(cc);
          loaded.remove(caseID);
        }
      } finally {
        unlock(__2);
      }
    }
  }

  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 (!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 Matches {

    public String[] m;

    public Matches() {
    }

    public Matches(String... m) {
      this.m = m;
    }

    public String get(int i) {
      return i < m.length ? m[i] : null;
    }

    public String unq(int i) {
      return unquote(get(i));
    }

    public String fsi(int i) {
      return formatSnippetID(unq(i));
    }

    public String fsi() {
      return fsi(0);
    }

    public String tlc(int i) {
      return unq(i).toLowerCase();
    }

    public boolean bool(int i) {
      return "true".equals(unq(i));
    }

    public String rest() {
      return m[m.length - 1];
    }

    public int psi(int i) {
      return Integer.parseInt(unq(i));
    }

    public String toString() {
      return "Matches(" + joinWithComma(quoteAll(asList(m))) + ")";
    }

    public int hashCode() {
      return _hashCode(toList(m));
    }

    public boolean equals(Object o) {
      return o instanceof Matches && arraysEqual(m, ((Matches) o).m);
    }
  }

  static public class TimedCache<A> {

    public long timeout;

    volatile public A value;

    public Object function;

    public long set;

    public Lock lock = lock();

    public boolean keepValueWhileCalculating = false;

    public int stores, fails, hits;

    public TimedCache(double timeoutSeconds, Object function) {
      this(function, timeoutSeconds);
    }

    public TimedCache(Object function, double timeoutSeconds) {
      this(timeoutSeconds);
      this.function = function;
    }

    public TimedCache(double timeoutSeconds) {
      timeout = toMS(timeoutSeconds);
    }

    public A set(A a) {
      Lock __0 = lock;
      lock(__0);
      try {
        ++stores;
        value = a;
        set = now();
        return a;
      } finally {
        unlock(__0);
      }
    }

    public boolean has() {
      Lock __1 = lock;
      lock(__1);
      try {
        clean();
        if (set != 0) {
          ++hits;
          return true;
        }
        ++fails;
        return false;
      } finally {
        unlock(__1);
      }
    }

    public A get() {
      Lock __2 = lock;
      lock(__2);
      try {
        if (function != null)
          return get(function);
        clean();
        if (set != 0)
          ++hits;
        else
          ++fails;
        return value;
      } finally {
        unlock(__2);
      }
    }

    public A get(Object makerFunction) {
      Lock __3 = lock;
      lock(__3);
      try {
        if (keepValueWhileCalculating) {
          if (value == null || shouldClean())
            set((A) callF(makerFunction));
          return value;
        } else {
          return this.has() ? getNoClean() : set((A) callF(makerFunction));
        }
      } finally {
        unlock(__3);
      }
    }

    public A getNoClean() {
      Lock __4 = lock;
      lock(__4);
      try {
        return value;
      } finally {
        unlock(__4);
      }
    }

    public void clean() {
      Lock __5 = lock;
      lock(__5);
      try {
        if (shouldClean())
          clear();
      } finally {
        unlock(__5);
      }
    }

    public boolean shouldClean() {
      return timeout > 0 && now() > set + timeout;
    }

    public void clear() {
      Lock __6 = lock;
      lock(__6);
      try {
        set = 0;
        value = null;
      } finally {
        unlock(__6);
      }
    }

    public String stats() {
      return "Stores: " + stores + ", hits: " + hits + ", fails: " + fails;
    }

    public A peek() {
      return value;
    }
  }

  static public class MultiMap<A, B> {

    public Map<A, List<B>> data = new HashMap<A, List<B>>();

    public MultiMap() {
    }

    public MultiMap(boolean useTreeMap) {
      if (useTreeMap)
        data = new TreeMap();
    }

    public MultiMap(MultiMap<A, B> map) {
      putAll(map);
    }

    public MultiMap(Map<A, List<B>> data) {
      this.data = data;
    }

    public void put(A key, B value) {
      synchronized (data) {
        List<B> list = data.get(key);
        if (list == null)
          data.put(key, list = _makeEmptyList());
        list.add(value);
      }
    }

    public void add(A key, B value) {
      put(key, value);
    }

    public void addAll(A key, Collection<B> values) {
      putAll(key, values);
    }

    public void addAllIfNotThere(A key, Collection<B> values) {
      synchronized (data) {
        for (B value : values) setPut(key, value);
      }
    }

    public void setPut(A key, B value) {
      synchronized (data) {
        if (!containsPair(key, value))
          put(key, value);
      }
    }

    public boolean containsPair(A key, B value) {
      synchronized (data) {
        return get(key).contains(value);
      }
    }

    public void putAll(A key, Collection<B> values) {
      synchronized (data) {
        if (nempty(values))
          getActual(key).addAll(values);
      }
    }

    public void 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> 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 List<B> allValues() {
      return concatLists(values(data));
    }

    public Object mutex() {
      return data;
    }

    public String toString() {
      return "mm" + str(data);
    }
  }

  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 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());
    }
  }

  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);

    public File pathToJavaXJar();

    public File getSnippetJar(String snippetID, String transpiledSrc);
  }

  static public class MultiSet<A> {

    public Map<A, Integer> map = new HashMap();

    public MultiSet(boolean useTreeMap) {
      if (useTreeMap)
        map = new TreeMap();
    }

    public MultiSet() {
    }

    public MultiSet(Iterable<A> c) {
      addAll(c);
    }

    public MultiSet(MultiSet<A> ms) {
      synchronized (ms) {
        for (A a : ms.keySet()) add(a, ms.get(a));
      }
    }

    synchronized public void add(A key) {
      add(key, 1);
    }

    synchronized public void addAll(Iterable<A> c) {
      if (c != null)
        for (A a : c) add(a);
    }

    synchronized public void addAll(MultiSet<A> ms) {
      for (A a : ms.keySet()) add(a, ms.get(a));
    }

    synchronized public void add(A key, int count) {
      if (count <= 0)
        return;
      if (map.containsKey(key))
        map.put(key, map.get(key) + count);
      else
        map.put(key, count);
    }

    synchronized public int get(A key) {
      Integer i = map.get(key);
      return i != null ? i : 0;
    }

    synchronized public boolean contains(A key) {
      return map.containsKey(key);
    }

    synchronized public void remove(A key) {
      Integer i = map.get(key);
      if (i != null && i > 1)
        map.put(key, i - 1);
      else
        map.remove(key);
    }

    synchronized public List<A> topTen() {
      return getTopTen();
    }

    synchronized public List<A> getTopTen() {
      return getTopTen(10);
    }

    synchronized public List<A> getTopTen(int maxSize) {
      List<A> list = getSortedListDescending();
      return list.size() > maxSize ? list.subList(0, maxSize) : list;
    }

    synchronized public List<A> highestFirst() {
      return getSortedListDescending();
    }

    synchronized public List<A> lowestFirst() {
      return reversedList(getSortedListDescending());
    }

    synchronized public List<A> getSortedListDescending() {
      List<A> list = new ArrayList<A>(map.keySet());
      Collections.sort(list, new Comparator<A>() {

        public int compare(A a, A b) {
          return map.get(b).compareTo(map.get(a));
        }
      });
      return list;
    }

    synchronized public int getNumberOfUniqueElements() {
      return map.size();
    }

    synchronized public int uniqueSize() {
      return map.size();
    }

    synchronized public Set<A> asSet() {
      return map.keySet();
    }

    synchronized public NavigableSet<A> navigableSet() {
      return navigableKeys((NavigableMap) map);
    }

    synchronized public Set<A> keySet() {
      return map.keySet();
    }

    synchronized public A getMostPopularEntry() {
      int max = 0;
      A a = null;
      for (Map.Entry<A, Integer> entry : map.entrySet()) {
        if (entry.getValue() > max) {
          max = entry.getValue();
          a = entry.getKey();
        }
      }
      return a;
    }

    synchronized public void removeAll(A key) {
      map.remove(key);
    }

    synchronized public int size() {
      int size = 0;
      for (int i : map.values()) size += i;
      return size;
    }

    synchronized public MultiSet<A> mergeWith(MultiSet<A> set) {
      MultiSet<A> result = new MultiSet<A>();
      for (A a : set.asSet()) {
        result.add(a, set.get(a));
      }
      return result;
    }

    synchronized public boolean isEmpty() {
      return map.isEmpty();
    }

    synchronized public String toString() {
      return str(map);
    }

    synchronized public void clear() {
      map.clear();
    }

    synchronized public Map<A, Integer> asMap() {
      return cloneMap(map);
    }
  }

  static public class CompilerBot {

    static public boolean verbose = false;

    static public File compileSnippet(String snippetID) {
      return compileSnippet(snippetID, "");
    }

    static public Pair<File, String> compileSnippet2(String snippetID) {
      return compileSnippet2(snippetID, "");
    }

    static public File compileSnippet(String snippetID, String javaTarget) {
      return compileSnippet2(snippetID, javaTarget).a;
    }

    static public Pair<File, String> compileSnippet2(String snippetID, String javaTarget) {
      String transpiledSrc = getServerTranspiled2(snippetID);
      int i = transpiledSrc.indexOf('\n');
      String libs = transpiledSrc.substring(0, Math.max(0, i));
      if (verbose)
        print("Compiling snippet: " + snippetID + ". Libs: " + libs);
      transpiledSrc = transpiledSrc.substring(i + 1);
      return pair(compile(transpiledSrc, libs, javaTarget, snippetID), transpiledSrc);
    }

    static public File compile(String src) {
      return compile(src, "");
    }

    static public File compile(String src, String libs) {
      return compile(src, libs, null);
    }

    static public File compile(String src, String dehlibs, String javaTarget) {
      return compile(src, dehlibs, javaTarget, null);
    }

    static public File compile(String src, String dehlibs, String javaTarget, String progID) {
      if (verbose)
        print("Compiling " + l(src) + " chars");
      String md5 = md5(dehlibs + "\n" + src + "\n" + fsIOpt(progID));
      File jar = getJarFile(md5);
      if (jar == null || jar.length() <= 22) {
        List<String> mainClass = findMainClass(javaTok(src));
        boolean canRename = mainClass != null && useDummyMainClasses() && isSnippetID(progID) && !tok_classHasModifier(mainClass, "public");
        if (verbose)
          print("useRenaming: " + useDummyMainClasses() + ", canRename: " + canRename + ", progID: " + progID);
        javaCompileToJar_optionalRename(src, dehlibs, jar, canRename ? progID : null, progID);
      } else {
        if (verbose)
          print("Getting classes from cache (" + jar.getAbsolutePath() + ", " + jar.length() + " bytes)");
        touchFile(jar);
      }
      return jar;
    }

    static public File getJarFile(String md5) {
      assertTrue(isMD5(md5));
      String sub = "JavaX-Caches/#1002203/" + md5 + ".jar";
      File f = actualUserDir(sub);
      return fileExists(f) ? f : userDir(sub);
    }
  }

  static public class T3<A, B, C> {

    public A a;

    public B b;

    public C c;

    public T3() {
    }

    public T3(A a, B b, C c) {
      this.c = c;
      this.b = b;
      this.a = a;
    }

    public T3(T3<A, B, C> t) {
      a = t.a;
      b = t.b;
      c = t.c;
    }

    public int hashCode() {
      return _hashCode(a) + 2 * _hashCode(b) - 4 * _hashCode(c);
    }

    public boolean equals(Object o) {
      if (o == this)
        return true;
      if (!(o instanceof T3))
        return false;
      T3 t = (T3) o;
      return eq(a, t.a) && eq(b, t.b) && eq(c, t.c);
    }

    public String toString() {
      return "(" + quoteBorderless(a) + ", " + quoteBorderless(b) + ", " + quoteBorderless(c) + ")";
    }
  }

  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 PreIncLongCounter {

    public long value;

    synchronized public long get() {
      return ++value;
    }

    synchronized public void set(long value) {
      this.value = value;
    }
  }

  static public class JavaXClassLoader extends URLClassLoader {

    public String progID;

    public List<File> files;

    public Set<String> triedToLoad = synchroSet();

    public Set<Class> loadedClasses = synchroSet();

    public boolean retired = false;

    public Object retiredMarker;

    public JavaXClassLoader(String progID, List<File> files) {
      this(progID, files, getSystemClassLoader());
    }

    public JavaXClassLoader(String progID, List<File> files, ClassLoader parent) {
      super(new URL[0], parent);
      this.progID = progID;
      this.files = files;
      {
        try {
          for (File f : files) addURL(f.toURI().toURL());
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }
      fixACCInClassLoader(this);
    }

    public Class<?> findClass(String name) throws ClassNotFoundException {
      boolean triedBefore = !triedToLoad.add(name);
      try {
        Class<?> c = super.findClass(name);
        loadedClasses.add(c);
        if (eq(name, "main"))
          callOpt(javax(), "registerAMainClass", c);
        return c;
      } catch (ClassNotFoundException e) {
        throw new ClassNotFoundException("Class " + name + " not found in " + joinWithComma(map("f2s", files)) + " (progID=" + progID + ")" + (triedBefore ? ", tried to load before" : ""), e);
      }
    }

    public String toString() {
      return "JavaXClassLoader[" + systemHashCodeHex(this) + "] - " + progID;
    }
  }

  static public class CancelPoint implements AutoCloseable {

    volatile public boolean closed = false;

    public void close() {
      closed = true;
    }
  }

  static public class MRUCache<A, B> extends LinkedHashMap<A, B> {

    public int maxSize = 10;

    public MRUCache() {
    }

    public MRUCache(int maxSize) {
      this.maxSize = maxSize;
    }

    public boolean removeEldestEntry(Map.Entry eldest) {
      return size() > maxSize;
    }

    public Object _serialize() {
      return ll(maxSize, cloneLinkedHashMap(this));
    }

    static public MRUCache _deserialize(List l) {
      MRUCache m = new MRUCache();
      m.maxSize = (int) first(l);
      m.putAll((LinkedHashMap) second(l));
      return m;
    }
  }

  static public class JavaXClassLoaderWithParent2 extends JavaXClassLoader {

    public ClassLoader virtualParent;

    public List<String> classesToSkip;

    public JavaXClassLoaderWithParent2(String progID, List<File> files, ClassLoader virtualParent, List<String> classesToSkip) {
      super(progID, files);
      this.virtualParent = virtualParent;
      this.classesToSkip = classesToSkip;
    }

    public Class<?> findClass(String name) throws ClassNotFoundException {
      if (shouldDelegate(name)) {
        Class<?> c = virtualParent.loadClass(name);
        if (c != null)
          return c;
      }
      return super.findClass(name);
    }

    public boolean shouldDelegate(String name) {
      for (String s : classesToSkip) if (eq(name, s) || startsWith(name, s + "$"))
        return true;
      return false;
    }
  }

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

  static public class DynamicObject {

    public String className;

    public LinkedHashMap<String, Object> fieldValues;

    public DynamicObject() {
    }

    public DynamicObject(String className) {
      this.className = className;
    }

    public Map<String, Object> _map() {
      return fieldValues;
    }
  }

  static public class PersistableThrowable {

    public String className;

    public String msg;

    public String stacktrace;

    public PersistableThrowable() {
    }

    public PersistableThrowable(Throwable e) {
      if (e == null)
        className = "Crazy Null Error";
      else {
        className = getClassName(e).replace('/', '.');
        msg = e.getMessage();
        stacktrace = getStackTrace_noRecord(e);
      }
    }

    public String toString() {
      return nempty(msg) ? className + ": " + msg : className;
    }
  }

  static public class QuickException extends RuntimeException {

    public Throwable fillInStackTrace() {
      return this;
    }

    public QuickException() {
    }

    public QuickException(Throwable e) {
      super(e);
    }

    public QuickException(String msg) {
      super(msg);
    }

    public QuickException(String msg, Throwable e) {
      super(msg, e);
    }
  }

  static public class MultiSetMap<A, B> {

    public Map<A, Set<B>> data = new HashMap<A, Set<B>>();

    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 void put(A key, B value) {
      synchronized (data) {
        Set<B> set = data.get(key);
        if (set == null)
          data.put(key, set = _makeEmptySet());
        set.add(value);
      }
    }

    public void add(A key, B value) {
      put(key, value);
    }

    public void addAll(A key, Collection<B> values) {
      synchronized (data) {
        putAll(key, values);
      }
    }

    public void addAllIfNotThere(A key, Collection<B> values) {
      synchronized (data) {
        for (B value : values) setPut(key, value);
      }
    }

    public void setPut(A key, B value) {
      synchronized (data) {
        if (!containsPair(key, value))
          put(key, value);
      }
    }

    public boolean containsPair(A key, B value) {
      synchronized (data) {
        return get(key).contains(value);
      }
    }

    public void putAll(A key, Collection<B> values) {
      synchronized (data) {
        for (B value : values) put(key, value);
      }
    }

    public void removeAll(A key, Collection<B> values) {
      synchronized (data) {
        for (B value : values) remove(key, value);
      }
    }

    public Set<B> get(A key) {
      synchronized (data) {
        Set<B> set = data.get(key);
        return set == null ? Collections.<B>emptySet() : set;
      }
    }

    public Set<B> 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) {
        data.remove(key);
      }
    }

    public void remove(A key, B value) {
      synchronized (data) {
        Set<B> set = data.get(key);
        if (set != null) {
          set.remove(value);
          if (set.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) {
        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) {
        int n = 0;
        for (Set l : data.values()) n += l(l);
        return n;
      }
    }

    public Set<A> reverseGet(B b) {
      synchronized (data) {
        Set<A> l = new HashSet();
        for (A key : data.keySet()) if (data.get(key).contains(b))
          l.add(key);
        return l;
      }
    }

    public Map<A, Set<B>> asMap() {
      synchronized (data) {
        return cloneMap(data);
      }
    }

    public boolean isEmpty() {
      synchronized (data) {
        return data.isEmpty();
      }
    }

    public Set<B> _makeEmptySet() {
      return new HashSet();
    }

    public Collection<Set<B>> allLists() {
      synchronized (data) {
        return new HashSet(data.values());
      }
    }

    public List<B> allValues() {
      return concatLists(values(data));
    }

    public Object mutex() {
      return data;
    }

    public String toString() {
      return "mm" + str(data);
    }
  }

  static public interface IConceptCounter {

    public Class<? extends Concept> conceptClass();

    public int countConcepts();

    public Collection<Concept> allConcepts();
  }

  static public interface IVar<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 RemoteDB implements AutoCloseable {

    public DialogIO db;

    public String name;

    public RemoteDB(String s) {
      this(s, false);
    }

    public RemoteDB(String s, boolean autoStart) {
      name = s;
      if (isSnippetID(s))
        name = dbBotName(s);
      db = findBot(name);
      if (db == null)
        if (autoStart) {
          nohupJavax(fsI(s));
          waitForBotStartUp(name);
          assertNotNull("Weird problem", db = findBot(s));
        } else
          throw fail("DB " + s + " not running");
    }

    public boolean functional() {
      return db != null;
    }

    public List<RC> list() {
      return adopt((List<RC>) rpc(db, "xlist"));
    }

    public List<RC> list(String className) {
      return adopt((List<RC>) rpc(db, "xlist", className));
    }

    public List<RC> xlist() {
      return list();
    }

    public List<RC> xlist(String className) {
      return list(className);
    }

    public List<RC> adopt(List<RC> l) {
      if (l != null)
        for (RC rc : l) adopt(rc);
      return l;
    }

    public RC adopt(RC rc) {
      if (rc != null)
        rc.db = this;
      return rc;
    }

    public Object adopt(Object o) {
      if (o instanceof RC)
        return adopt((RC) o);
      return o;
    }

    public String xclass(RC o) {
      return (String) rpc(db, "xclass", o);
    }

    public Object xget(RC o, String field) {
      return adopt(rpc(db, "xget", o, field));
    }

    public String xS(RC o, String field) {
      return (String) xget(o, field);
    }

    public RC xgetref(RC o, String field) {
      return adopt((RC) xget(o, field));
    }

    public void xset(RC o, String field, Object value) {
      rpc(db, "xset", o, field, value);
    }

    public RC uniq(String className) {
      RC ref = first(list(className));
      if (ref == null)
        ref = xnew(className);
      return ref;
    }

    public RC xuniq(String className) {
      return uniq(className);
    }

    public RC xnew(String className, Object... values) {
      return adopt((RC) rpc(db, "xnew", className, values));
    }

    public void xdelete(RC o) {
      rpc(db, "xdelete", o);
    }

    public void xdelete(List<RC> l) {
      rpc(db, "xdelete", l);
    }

    public void close() {
      _close(db);
    }

    public String fullgrab() {
      return (String) rpc(db, "xfullgrab");
    }

    public String xfullgrab() {
      return fullgrab();
    }

    public void xshutdown() {
      rpc(db, "xshutdown");
    }

    public long xchangeCount() {
      return (long) rpc(db, "xchangeCount");
    }

    public int xcount() {
      return (int) rpc(db, "xcount");
    }

    public void reconnect() {
      close();
      db = findBot(name);
    }

    public RC rc(long id) {
      return new RC(this, id);
    }
  }

  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 Lock dbLock() {
    return db_mainConcepts().lock;
  }

  static public boolean bareDBMode_on = false;

  static public void bareDBMode() {
    bareDBMode(null);
  }

  static public void bareDBMode(Integer autoSaveInterval) {
    bareDBMode_on = true;
    conceptsAndBot(autoSaveInterval);
  }

  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> List<A> listGetOrCreate_List(List<List<A>> l, int i) {
    if (l == null)
      return null;
    List<A> a = get(l, i);
    if (a == null)
      listSet(l, i, a = new ArrayList());
    return a;
  }

  static public <A> List<A> sortInPlaceByCalculatedFieldIC(List<A> l, final F1<A, String> f) {
    sort(l, new Comparator<A>() {

      public int compare(A a, A b) {
        return compareIC(f.get(a), f.get(b));
      }
    });
    return l;
  }

  static public String stdToString(Object o) {
    return standard_toString(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 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 BigInteger plus(BigInteger a, BigInteger b) {
    return a.add(b);
  }

  static public BigInteger plus(BigInteger a, long b) {
    return a.add(bigint(b));
  }

  static public BigInteger mul(BigInteger a, BigInteger b) {
    return a.multiply(b);
  }

  static public BigInteger mul(BigInteger a, long b) {
    return a.multiply(bigint(b));
  }

  static public String bigintToGlobalID(BigInteger value) {
    char[] buf = new char[16];
    for (int i = 16 - 1; i >= 0; i--) {
      buf[i] = charPlus('a', mod(value, 26).intValue());
      value = div(value, 26);
    }
    return str(buf);
  }

  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 Comparator reverseOrder() {
    return new Comparator() {

      public int compare(Object a, Object b) {
        return cmp(b, a);
      }
    };
  }

  static public <A, B> List<B> getAll(Map<A, B> map, Collection<A> l) {
    return lookupAllOpt(map, l);
  }

  static public <A, B> List<B> getAll(Collection<A> l, Map<A, B> map) {
    return lookupAllOpt(map, l);
  }

  static public <A, B> List<A> cloneKeys_noSync(Map<A, B> map) {
    return cloneList_noSync(keys(map));
  }

  static public <A, B> IterableIterator<B> navigableMultiMapValuesIterator(final MultiMap<A, B> mm) {
    return iteratorFromFunction(new F0<B>() {

      public Iterator<List<B>> it = concurrentlyIterateValues((NavigableMap) mm.data);

      public Iterator<B> it2;

      public B get() {
        while (it2 == null || !it2.hasNext()) {
          if (!it.hasNext())
            return null;
          it2 = concurrentlyIterateList(it.next());
        }
        return it2.next();
      }
    });
  }

  static public <A, B> MultiSet<A> multiMapToMultiSet(MultiMap<A, B> mm) {
    return multiMapAsMultiSet(mm);
  }

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

  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 <A> A listGetOrCreate_full(List<A> l, int i, Class<? extends A> c) {
    if (l == null)
      return null;
    while (i >= l(l)) l.add(nuInstance(c));
    return l.get(i);
  }

  static public <A> A listGetOrCreate_full(Class<? extends A> c, List<A> l, int i) {
    return listGetOrCreate_full(l, i, c);
  }

  static public Collection<Concept> allConcepts() {
    return db_mainConcepts().allConcepts();
  }

  static public Collection<Concept> allConcepts(Concepts concepts) {
    return concepts.allConcepts();
  }

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

  static public File getSecretProgramDir() {
    return getSecretProgramDir(getProgramID());
  }

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

  static public byte[] base64decode(String s) {
    byte[] alphaToInt = base64decode_base64toint;
    int sLen = s.length();
    int numGroups = sLen / 4;
    if (4 * numGroups != sLen)
      throw new IllegalArgumentException("String length must be a multiple of four.");
    int missingBytesInLastGroup = 0;
    int numFullGroups = numGroups;
    if (sLen != 0) {
      if (s.charAt(sLen - 1) == '=') {
        missingBytesInLastGroup++;
        numFullGroups--;
      }
      if (s.charAt(sLen - 2) == '=')
        missingBytesInLastGroup++;
    }
    byte[] result = new byte[3 * numGroups - missingBytesInLastGroup];
    int inCursor = 0, outCursor = 0;
    for (int i = 0; i < numFullGroups; i++) {
      int ch0 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch1 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch2 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch3 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
      result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
      result[outCursor++] = (byte) ((ch2 << 6) | ch3);
    }
    if (missingBytesInLastGroup != 0) {
      int ch0 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch1 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
      if (missingBytesInLastGroup == 1) {
        int ch2 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
        result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
      }
    }
    return result;
  }

  static public int base64decode_base64toint(char c, byte[] alphaToInt) {
    int result = alphaToInt[c];
    if (result < 0)
      throw new IllegalArgumentException("Illegal character " + c);
    return result;
  }

  static final public byte[] base64decode_base64toint = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 };

  static public String 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 NavigableMap synchroTreeMap() {
    return Collections.synchronizedNavigableMap(new TreeMap());
  }

  static public boolean hasConcept(Class<? extends Concept> c, Object... params) {
    return findConceptWhere(c, params) != null;
  }

  static public Object load(String varName) {
    readLocally(varName);
    return get(mc(), varName);
  }

  static public Object load(String progID, String varName) {
    readLocally(progID, varName);
    return get(mc(), varName);
  }

  static public boolean exceptionMessageContains(Throwable e, String s) {
    return cic(getInnerMessage(e), s);
  }

  static public void printShortException(Throwable e) {
    print(exceptionToStringShort(e));
  }

  static public void printShortException(String s, Throwable e) {
    print(s, exceptionToStringShort(e));
  }

  static public void clearConcepts() {
    db_mainConcepts().clearConcepts();
  }

  static public void clearConcepts(Concepts concepts) {
    concepts.clearConcepts();
  }

  static public void restoreLatestBackupIfConceptsFileEmpty(String dbID, Object... __) {
    boolean doIt = boolPar("doIt", __);
    File file = conceptsFile(dbID);
    if (fileExists(file) && fileSize(file) == 0) {
      print(file + " corrupted, trying to restore");
      File backup = lastThat("fileNotEmpty", sortByFileName(conceptBackupFiles(dbID)));
      if (backup == null) {
        print("No usable backup found :(");
        return;
      }
      String msg = "RESTORING: " + backup;
      File log = javaxDataDir("db-restores.log");
      if (doIt)
        logQuotedWithTime(log, msg);
      print(stringIf(!doIt, "[would be] ") + msg);
      if (doIt) {
        clearConceptsOf(dbID);
        copyFile(backup, file);
        print(msg = "DB RESTORED!");
        if (doIt)
          logQuotedWithTime(log, msg);
      }
    }
  }

  static public void readLocally(String progID, String varNames) {
    readLocally2(mc(), progID, varNames);
  }

  static public void readLocally(String varNames) {
    readLocally2(mc(), programID(), varNames);
  }

  static public void readLocally2(Object obj, String varNames) {
    readLocally2(obj, programID(), varNames);
  }

  static public int readLocally_stringLength;

  static public ThreadLocal<Boolean> readLocally2_allDynamic = new ThreadLocal();

  static public ThreadLocal readLocally2_classFinder = new ThreadLocal();

  static public void readLocally2(Object obj, String progID, String varNames) {
    try {
      boolean allDynamic = isTrue(getAndClearThreadLocal(readLocally2_allDynamic));
      for (String variableName : javaTokC(varNames)) {
        File textFile = new File(programDir(progID), variableName + ".text");
        String value = loadTextFile(textFile);
        if (value != null)
          set(main.class, variableName, value);
        else {
          File structureFile = new File(programDir(progID), variableName + ".structure");
          value = loadTextFile(structureFile);
          if (value == null) {
            File structureGZFile = new File(programDir(progID), variableName + ".structure.gz");
            if (!structureGZFile.isFile())
              return;
            InputStream fis = new FileInputStream(structureGZFile);
            try {
              GZIPInputStream gis = newGZIPInputStream(fis);
              InputStreamReader reader = new InputStreamReader(gis, "UTF-8");
              BufferedReader bufferedReader = new BufferedReader(reader);
              Object o = unstructure_tok(javaTokC_noMLS_onReader(bufferedReader), allDynamic, readLocally2_classFinder.get());
              readLocally_set(obj, variableName, o);
              return;
            } finally {
              _close(fis);
            }
          }
          readLocally_stringLength = l(value);
          if (nempty(value))
            readLocally_set(obj, variableName, unstructure(value, allDynamic, readLocally2_classFinder.get()));
        }
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void readLocally_set(Object c, String varName, Object value) {
    Object oldValue = get(c, varName);
    if (oldValue instanceof List && !(oldValue instanceof ArrayList) && value != null) {
      value = synchroList((List) value);
    }
    set(c, varName, value);
  }

  static public int done_minPrint = 10;

  static public long done(long startTime, String desc) {
    long time = now() - startTime;
    if (time >= done_minPrint)
      print(desc + " [" + time + " ms]");
    return time;
  }

  static public long done(String desc, long startTime) {
    return done(startTime, desc);
  }

  static public long done(long startTime) {
    return done(startTime, "");
  }

  static public RemoteDB connectToDBOpt(String dbNameOrID) {
    try {
      return new RemoteDB(dbNameOrID);
    } catch (Throwable __e) {
      return null;
    }
  }

  static public Concept getConcept(long id) {
    return db_mainConcepts().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 void saveLocally(String variableName) {
    saveLocally(programID(), variableName);
  }

  static public void saveLocally(String progID, String variableName) {
    saveLocally2(mc(), progID, variableName);
  }

  static public void saveLocally2(Object obj, String variableName) {
    saveLocally2(obj, programID(), variableName);
  }

  static public void saveLocally2(Object obj, String progID, String variableName) {
    Lock __0 = saveLock();
    lock(__0);
    try {
      File textFile = new File(programDir(progID), variableName + ".text");
      File structureFile = new File(programDir(progID), variableName + ".structure");
      Object x = get(obj, variableName);
      if (x == null) {
        textFile.delete();
        structureFile.delete();
      } else if (x instanceof String) {
        saveTextFile(textFile, (String) x);
        structureFile.delete();
      } else {
        saveTextFile(structureFile, javaTokWordWrap(structure(x)));
        textFile.delete();
      }
    } finally {
      unlock(__0);
    }
  }

  static public void callRunnableWithWrapper(Object wrapper, Runnable r) {
    if (wrapper == null)
      callF(r);
    else
      callF(wrapper, r);
  }

  static public void saveGZStructureToFile(String file, Object o) {
    saveGZStructureToFile(getProgramFile(file), o);
  }

  static public void saveGZStructureToFile(File file, Object o) {
    try {
      File parentFile = file.getParentFile();
      if (parentFile != null)
        parentFile.mkdirs();
      File tempFile = tempFileFor(file);
      if (tempFile.exists())
        try {
          String saveName = tempFile.getPath() + ".saved." + now();
          copyFile(tempFile, new File(saveName));
        } catch (Throwable e) {
          printStackTrace(e);
        }
      FileOutputStream fileOutputStream = newFileOutputStream(tempFile.getPath());
      try {
        GZIPOutputStream gos = new GZIPOutputStream(fileOutputStream);
        OutputStreamWriter outputStreamWriter = new OutputStreamWriter(gos, "UTF-8");
        PrintWriter printWriter = new PrintWriter(outputStreamWriter);
        structureToPrintWriter(o, printWriter);
        printWriter.close();
        gos.close();
        fileOutputStream.close();
      } catch (Throwable e) {
        fileOutputStream.close();
        tempFile.delete();
        throw rethrow(e);
      }
      if (file.exists() && !file.delete())
        throw new IOException("Can't delete " + file.getPath());
      if (!tempFile.renameTo(file))
        throw new IOException("Can't rename " + tempFile + " to " + file);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A popFirst(List<A> l) {
    if (empty(l))
      return null;
    A a = first(l);
    l.remove(0);
    return a;
  }

  static public <A> A popFirst(Collection<A> l) {
    if (empty(l))
      return null;
    A a = first(l);
    l.remove(a);
    return a;
  }

  static public <A> List<A> popFirst(int n, List<A> l) {
    List<A> part = cloneSubList(l, 0, n);
    removeSubList(l, 0, n);
    return part;
  }

  static public String javaTokWordWrap(String s) {
    return javaTokWordWrap(120, s);
  }

  static public String javaTokWordWrap(int cols, String s) {
    int col = 0;
    List<String> tok = javaTok(s);
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && col >= cols && !containsNewLine(t))
        tok.set(i, t = rtrimSpaces(t) + "\n");
      int idx = t.lastIndexOf('\n');
      if (idx >= 0)
        col = l(t) - (idx + 1);
      else
        col += l(t);
    }
    return join(tok);
  }

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

  static public FixedRateTimer doEvery_daemon(long delay, final Object r) {
    return doEvery_daemon(delay, delay, r);
  }

  static public FixedRateTimer doEvery_daemon(long delay, long firstDelay, final Object r) {
    FixedRateTimer timer = new FixedRateTimer(true);
    timer.scheduleAtFixedRate(smartTimerTask(r, timer, delay), firstDelay, delay);
    return timer;
  }

  static public FixedRateTimer doEvery_daemon(double delaySeconds, final Object r) {
    return doEvery_daemon(toMS(delaySeconds), r);
  }

  static public <A> A firstOfType(Collection c, Class<A> type) {
    for (Object x : c) if (isInstanceX(type, x))
      return (A) x;
    return null;
  }

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

  static public <A> List<A> filterByType(Iterable c, Class<A> type) {
    List<A> l = new ArrayList();
    if (c != null)
      for (Object x : c) if (isInstanceX(type, x))
        l.add((A) x);
    return l;
  }

  static public <A> List<A> filterByType(Object[] c, Class<A> type) {
    return filterByType(asList(c), type);
  }

  static public <A> List<A> filterByType(Class<A> type, Iterable c) {
    return filterByType(c, type);
  }

  static public <A> List<A> filterByDynamicType(Collection<A> c, String type) {
    List<A> l = new ArrayList();
    for (A x : c) if (eq(dynamicClassName(x), type))
      l.add(x);
    return l;
  }

  static public boolean hasType(Collection c, Class type) {
    for (Object x : c) if (isInstanceX(type, x))
      return true;
    return false;
  }

  static public <A extends Concept> A findBackRef(Concept c, Class<A> type) {
    for (Concept.Ref r : c.backRefs) if (instanceOf(r.concept(), type))
      return (A) r.concept();
    return null;
  }

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

  static public String loadConceptsStructure(String progID) {
    return loadTextFilePossiblyGZipped(getProgramFile(progID, "concepts.structure"));
  }

  static public String loadConceptsStructure() {
    return loadConceptsStructure(dbProgramID());
  }

  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 boolean dynamicObjectIsLoading() {
    return isTrue(getThreadLocal(DynamicObject_loading));
  }

  static public <A> List<A> addDyn(List<A> l, A a) {
    if (l == null)
      l = new ArrayList();
    l.add(a);
    return l;
  }

  static public Str concept(String name) {
    for (Str s : list(Str.class)) if (eqic(s.name, name) || containsIgnoreCase(s.otherNames, name))
      return s;
    return new Str(name);
  }

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

  static public <A> List<A> removeDyn(List<A> l, A a) {
    if (l == null)
      return null;
    l.remove(a);
    return empty(l) ? null : l;
  }

  static public void concepts() {
    conceptsAndBot();
  }

  static public void concepts(int autoSaveInterval) {
    conceptsAndBot(autoSaveInterval);
  }

  static public <A> MultiSetMap<String, A> ciMultiSetMap() {
    MultiSetMap<String, A> mm = new MultiSetMap();
    mm.data = ciMap();
    return mm;
  }

  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 <A, B> IterableIterator<B> navigableMultiSetMapValuesIterator(final MultiSetMap<A, B> mm) {
    return iteratorFromFunction(new F0<B>() {

      public Iterator<Set<B>> it = concurrentlyIterateValues((NavigableMap) mm.data);

      public Iterator<B> it2;

      public B get() {
        while (it2 == null || !it2.hasNext()) {
          if (!it.hasNext())
            return null;
          it2 = iterator(asList(it.next()));
        }
        return it2.next();
      }
    });
  }

  static public String combineWithSlash(String a, String b) {
    return joinNempties("/", a, b);
  }

  static public void cleanUpAndClear(Collection c) {
    if (c == null)
      return;
    cleanUp(c);
    c.clear();
  }

  static public void cleanUpAndClear(Map map) {
    if (map == null)
      return;
    cleanUp(map);
    map.clear();
  }

  static public <A> List<A> listCreateAndAdd(List<A> l, A a) {
    return addDyn(l, a);
  }

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

  static public List<String> quoteAll(Collection<String> l) {
    List<String> x = new ArrayList();
    for (String s : l) x.add(quote(s));
    return x;
  }

  static public boolean arraysEqual(Object[] a, Object[] b) {
    if (a.length != b.length)
      return false;
    for (int i = 0; i < a.length; i++) if (neq(a[i], b[i]))
      return false;
    return true;
  }

  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> 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 float score(Scored s) {
    return s == null ? 0 : s.score();
  }

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

  static public <A> List<A> reversedList(Collection<A> l) {
    List<A> x = cloneList(l);
    Collections.reverse(x);
    return x;
  }

  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 List<String> findMainClass(List<String> tok) {
    for (List<String> c : reversedList(allClasses(tok))) {
      String name = getClassDeclarationName(c);
      if (eq(name, "main") || name.startsWith("x"))
        return c;
    }
    return findBlock("m {", tok);
  }

  static public boolean useDummyMainClasses() {
    return true;
  }

  static public boolean tok_classHasModifier(List<String> classDecl, String modifier) {
    if (classDecl == null)
      return false;
    int i = classDecl.indexOf("class");
    return subList(classDecl, 0, i).contains(modifier);
  }

  static public boolean javaCompileToJar_useRAMDisk = false;

  static public File javaCompileToJar_optionalRename(String src, File destJar, String progIDForRename) {
    return javaCompileToJar_optionalRename(src, "", destJar, progIDForRename);
  }

  static synchronized public File javaCompileToJar_optionalRename(String src, String dehlibs, File destJar, String progIDForRename) {
    return javaCompileToJar_optionalRename(src, dehlibs, destJar, progIDForRename, null);
  }

  static synchronized public File javaCompileToJar_optionalRename(String src, String dehlibs, File destJar, String progIDForRename, String progID) {
    String javaTarget = null;
    String dummyClass = "main";
    if (progIDForRename != null) {
      dummyClass = dummyMainClassName(progIDForRename);
      src += "\nclass " + dummyClass + "{}";
    }
    String md5 = md5(src);
    File jar = destJar;
    Class j = getJavaX();
    if (javaTarget != null)
      setOpt(j, "javaTarget", javaTarget);
    File srcDir = tempDir();
    String className = "main";
    String fileName = dummyClass + ".java";
    List<String> tok = javaTok(src);
    String packageName = tok_packageName(tok);
    if (packageName != null)
      fileName = packageName.replace(".", "/") + "/" + tok_firstClassName(tok) + ".java";
    File mainJava = new File(srcDir, fileName);
    saveTextFile(mainJava, src);
    File classesDir = javaCompileToJar_useRAMDisk ? tempDirPossiblyInRAMDisk() : tempDir();
    try {
      List<File> libraries = new ArrayList();
      Matcher m = Pattern.compile("\\d+").matcher(dehlibs);
      while (m.find()) {
        String libID = m.group();
        assertTrue(isSnippetID(libID));
        libraries.add(loadLibraryOrSrcLib(libID));
      }
      libraries.add(pathToJavaxJar());
      String compilerOutput;
      try {
        compilerOutput = (String) call(j, "compileJava", srcDir, libraries, classesDir);
      } catch (Throwable e) {
        compilerOutput = (String) get(getJavaX(), "javaCompilerOutput");
        compilerOutput = indentx("> ", cleanJavaCompilerOutput(compilerOutput));
        if (!swic(e.getMessage(), "Java compiler returned errors."))
          compilerOutput = appendWithNewLine(compilerOutput, str(e));
        throw fail(compilerOutput, e);
      }
      compilerOutput = cleanJavaCompilerOutput("Annotation processing got disabled, since it requires a 1.6 compliant JVM");
      if (nempty(compilerOutput)) {
        print("Compiler said: " + compilerOutput);
      }
      if (!anyFileWithExtensionInDir(classesDir, ".class")) {
        printWithIndent("SRC> ", src);
        throw fail("No classes generated (was compiling " + nChars(src) + ")");
      }
      saveTextFile(new File(classesDir, "main.java"), src);
      if (nempty(dehlibs))
        saveTextFile(new File(classesDir, "libraries"), dehlibs);
      saveTextFile(new File(classesDir, "progID"), progID);
      dir2zip_recurse_verbose = false;
      int n = dir2zip_recurse(classesDir, jar);
      return jar;
    } finally {
      if (isInRAMDisk(classesDir))
        deleteDirectory(classesDir);
    }
  }

  static public void touchFile(File file) {
    try {
      closeRandomAccessFile(newRandomAccessFile(mkdirsForFile(file), "rw"));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public File actualUserDir() {
    return new File(actualUserHome());
  }

  static public File actualUserDir(String path) {
    return new File(actualUserHome(), path);
  }

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

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

  static public void quoteBorderless_impl(String s, StringBuilder out) {
    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
        out.append(c);
    }
  }

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

  static public <A> Set<A> synchroSet() {
    return synchroHashSet();
  }

  static public <A> Set<A> synchroSet(Set<A> set) {
    return Collections.synchronizedSet(set);
  }

  static public void fixACCInClassLoader(Object o) {
    try {
      AccessControlContext acc = vm_globalACC();
      if (acc != null)
        replaceACCInClassLoader(o, acc);
    } catch (Throwable __e) {
      _handleException(__e);
    }
  }

  static public String systemHashCodeHex(Object o) {
    return intToHex(identityHashCode(o));
  }

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

  static public String dbBotName(String progIDWithCase) {
    return fsI_flex(progIDWithCase) + " Concepts";
  }

  static public Map<String, Integer> findBot_cache = synchroHashMap();

  static public int findBot_timeout = 5000;

  static public DialogIO findBot(String searchPattern) {
    String subBot = null;
    int i = searchPattern.indexOf('/');
    if (i >= 0 && (isJavaIdentifier(searchPattern.substring(0, i)) || isInteger(searchPattern.substring(0, i)))) {
      subBot = searchPattern.substring(i + 1);
      searchPattern = searchPattern.substring(0, i);
      if (!isInteger(searchPattern))
        searchPattern = "Multi-Port at " + searchPattern + ".";
    }
    if (isInteger(searchPattern))
      return talkToSubBot(subBot, talkTo(parseInt(searchPattern)));
    if (eq(searchPattern, "remote"))
      return talkToSubBot(subBot, talkTo("second.tinybrain.de", 4999));
    Integer port = findBot_cache.get(searchPattern);
    if (port != null)
      try {
        DialogIO io = talkTo("localhost", port);
        io.waitForLine();
        String line = io.readLineNoBlock();
        if (indexOfIgnoreCase(line, searchPattern) == 0) {
          call(io, "pushback", line);
          return talkToSubBot(subBot, io);
        }
      } catch (Exception e) {
        e.printStackTrace();
      }
    List<ProgramScan.Program> bots = quickBotScan();
    for (ProgramScan.Program p : bots) {
      if (indexOfIgnoreCase(p.helloString, searchPattern) == 0) {
        findBot_cache.put(searchPattern, p.port);
        return talkToSubBot(subBot, talkTo("localhost", p.port));
      }
    }
    for (ProgramScan.Program p : bots) {
      String botName = firstPartOfHelloString(p.helloString);
      boolean isVM = startsWithIgnoreCase(p.helloString, "This is a JavaX VM.");
      boolean shouldRecurse = startsWithIgnoreCase(botName, "Multi-Port") || isVM;
      if (shouldRecurse)
        try {
          Map<Number, String> subBots = (Map) unstructure(sendToLocalBotQuietly(p.port, "list bots"));
          for (Number vport : subBots.keySet()) {
            String name = subBots.get(vport);
            if (startsWithIgnoreCase(name, searchPattern))
              return talkToSubBot(vport.longValue(), talkTo("localhost", p.port));
          }
        } catch (Throwable __e) {
          print(exceptionToStringShort(__e));
        }
    }
    return null;
  }

  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 long waitForBotStartUp_timeoutSeconds = 60;

  static public String waitForBotStartUp(String botName) {
    for (int i = 0; i < waitForBotStartUp_timeoutSeconds; i++) {
      sleepSeconds(i == 0 ? 0 : 1);
      String addr = getBotAddress(botName);
      if (addr != null)
        return addr;
    }
    throw fail("Bot not found: " + quote(botName));
  }

  static public Object rpc(String botName, String method, Object... args) {
    return unstructure_matchOK2OrFail(sendToLocalBot(botName, rpc_makeCall(method, args)));
  }

  static public Object rpc(DialogIO bot, String method, Object... args) {
    return unstructure_matchOK2OrFail(bot.ask(rpc_makeCall(method, args)));
  }

  static public String rpc_makeCall(String method, Object... args) {
    if (empty(args))
      return "call " + method;
    return format("call *", concatLists((List) ll(method), asList(args)));
  }

  static public void close(AutoCloseable c) {
    _close(c);
  }

  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 format3(String pat, Object... args) {
    if (args.length == 0)
      return pat;
    List<String> tok = javaTokPlusPeriod(pat);
    int argidx = 0;
    for (int i = 1; i < tok.size(); i += 2) if (tok.get(i).equals("*"))
      tok.set(i, format3_formatArg(argidx < args.length ? args[argidx++] : "null"));
    return join(tok);
  }

  static public String format3_formatArg(Object arg) {
    if (arg == null)
      return "null";
    if (arg instanceof String) {
      String s = (String) arg;
      return isIdentifier(s) || isNonNegativeInteger(s) ? s : quote(s);
    }
    if (arg instanceof Integer || arg instanceof Long)
      return String.valueOf(arg);
    return quote(structure(arg));
  }

  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;
    try {
      ensureDBNotRunning(dbBotStandardName());
    } catch (Throwable _e) {
      db_mainConcepts().dontSave = true;
      throw rethrow(_e);
    }
    db_mainConcepts().persist(autoSaveInterval);
    dbBot();
    if (conceptsAndBot_thinOnStart) {
      try {
        thinAProgramsBackups(getDBProgramID(), true);
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public void addToContainer(final Container a, final Component b) {
    if (a != null && b != null) {
      swing(new Runnable() {

        public void run() {
          try {
            a.add(b);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "a.add(b);";
        }
      });
    }
  }

  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 standard_toString(Object o) {
    if (o == null)
      return "null";
    String name = shortClassName(o);
    Set<String> fields = fieldNames(o);
    if (empty(fields))
      return name;
    return name + "(" + joinWithComma(mapNonNulls(fields, field -> {
      Object value = get(o, field);
      if (value == null)
        return null;
      return field + "=" + str(value);
    })) + ")";
  }

  static public Set<String> allFields(Object o) {
    TreeSet<String> fields = new TreeSet();
    Class _c = _getClass(o);
    do {
      for (Field f : _c.getDeclaredFields()) fields.add(f.getName());
      _c = _c.getSuperclass();
    } while (_c != null);
    return fields;
  }

  static public int stdHash(Object a, String... fields) {
    if (a == null)
      return 0;
    int hash = getClassName(a).hashCode();
    for (String field : fields) hash = boostHashCombine(hash, hashCode(getOpt(a, field)));
    return hash;
  }

  static public char charPlus(char a, int b) {
    return (char) (((int) a) + b);
  }

  static public int mod(int n, int m) {
    return (n % m + m) % m;
  }

  static public long mod(long n, long m) {
    return (n % m + m) % m;
  }

  static public BigInteger mod(BigInteger n, int m) {
    return n.mod(bigint(m));
  }

  static public double mod(double n, double m) {
    return (n % m + m) % m;
  }

  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(final F0<A> f) {
    return iteratorFromFunction_f0(f);
  }

  static public <A, B> IterableIterator<B> concurrentlyIterateValues(final NavigableMap<A, B> map) {
    return iteratorFromFunction(new F0<B>() {

      public Iterator<A> it = keys(map).iterator();

      public A key;

      public B get() {
        synchronized (map) {
          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 <A> IterableIterator<A> concurrentlyIterateList(final List<A> l) {
    return iteratorFromFunction_withEndMarker_f0(new F0<A>() {

      public int i;

      public A get() {
        int _i = i++;
        synchronized (l) {
          if (_i < l(l)) {
            A a = l.get(_i);
            if (a == iteratorFromFunction_endMarker)
              throw fail("no");
            return a;
          }
          return (A) iteratorFromFunction_endMarker;
        }
      }
    });
  }

  static public <A, B> MultiSet<A> multiMapAsMultiSet(MultiMap<A, B> mm) {
    MultiSet<A> ms = new MultiSet();
    for (A a : keys(mm)) ms.add(a, l(mm.get(a)));
    return ms;
  }

  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) {
    return toRunnable(r);
  }

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

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

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

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

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

  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> A nuInstance(Class<A> c) {
    return nuEmptyObject(c);
  }

  static public String getInnerMessage(Throwable e) {
    if (e == null)
      return null;
    return getInnerException(e).getMessage();
  }

  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 boolean fileNotEmpty(File f) {
    return isFile(f) && fileSize(f) > 0;
  }

  static public List<File> sortByFileName(List<File> l) {
    return sortFilesByName(l);
  }

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

  static public void clearConceptsOf(String progID) {
    getProgramFile(progID, "concepts.structure").delete();
    getProgramFile(progID, "idCounter.structure").delete();
  }

  static public Lock saveLock_lock = fairLock();

  static public Lock saveLock() {
    return saveLock_lock;
  }

  static public File tempFileFor(File f) {
    return new File(f.getPath() + "_temp");
  }

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

  static public int year() {
    return localYear();
  }

  static public int year(long now) {
    return localYear(now);
  }

  static public int month() {
    return localMonth();
  }

  static public int month(long now) {
    return localMonth(now);
  }

  static public int dayOfMonth() {
    return localDayOfMonth();
  }

  static public int dayOfMonth(long now) {
    return localDayOfMonth(now);
  }

  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 String dynamicClassName(Object o) {
    if (o instanceof DynamicObject && ((DynamicObject) o).className != null)
      return "main$" + ((DynamicObject) o).className;
    return className(o);
  }

  static public void assertNotOnAWTThread() {
    assertFalse("Can't do this in AWT thread", isAWTThread());
  }

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

  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 File loadBinarySnippet(String snippetID) {
    try {
      IResourceLoader rl = vm_getResourceLoader();
      if (rl != null)
        return rl.loadLibrary(snippetID);
      long id = parseSnippetID(snippetID);
      if (isImageServerSnippet(id))
        return loadImageAsFile(snippetID);
      File f = DiskSnippetCache_getLibrary(id);
      if (fileSize(f) == 0)
        f = loadDataSnippetToFile(snippetID);
      return f;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public HashSet<String> allClasses_keywords = lithashset("class", "interface", "enum", "sclass", "sinterface", "record", "srecord", "asclass");

  static public List<List<String>> allClasses(List<String> tok) {
    List<List<String>> l = new ArrayList();
    int n = tok.size();
    HashSet<String> _allClasses_keywords = allClasses_keywords;
    for (int i = 1; i < n; i += 2) {
      String t = tok.get(i);
      if ("{".equals(t))
        i = findEndOfBlock(tok, i) - 1;
      else if (_allClasses_keywords.contains(t) && (tok_isJavaxMetaCommandLeftOf(tok, i) || !eqGetOneOf(tok, i - 2, ".", "include"))) {
        int j = i;
        while (j < n && !tok.get(j).equals("{")) j += 2;
        j = findEndOfBlock(tok, j) + 1;
        i = leftScanModifiers(tok, i);
        l.add(tok.subList(i - 1, Math.min(n, j)));
        i = j - 2;
      }
    }
    return l;
  }

  static public List<List<String>> allClasses(String text) {
    return allClasses(javaTok(text));
  }

  static public String getClassDeclarationName(List<String> tok) {
    if (tok != null)
      for (int i = 1; i + 2 < tok.size(); i += 2) if (allClasses_keywords.contains(tok.get(i)) && isIdentifier(tok.get(i + 2))) {
        if (eqGet(tok, i + 2, "noeq"))
          i += 2;
        return tok.get(i + 2);
      }
    return null;
  }

  static public List<String> findBlock(String pat, List<String> tok) {
    List<String> tokpat = javaTok(pat);
    int i = findCodeTokens(tok, toStringArray(codeTokensOnly(tokpat)));
    if (i < 0)
      return null;
    int bracketIdx = i + tokpat.size() - 3;
    assertEquals("{", tok.get(bracketIdx));
    int endIdx = findEndOfBlock(tok, bracketIdx);
    return subList(tok, i - 1, endIdx + 1);
  }

  static public String dummyMainClassName(String progID) {
    return "m" + psI(progID);
  }

  static public File tempDir() {
    return makeTempDir();
  }

  static public String tok_packageName(List<String> tok) {
    int i = jfind(tok, "package");
    if (i < 0)
      return "";
    i += 2;
    int j = jfind(tok, i, ";");
    if (j < 0)
      return "";
    return join(codeTokensOnly(subList(tok, i - 1, j)));
  }

  static public String tok_firstClassName(List<String> tok) {
    int i = jfind(tok, "class <id>");
    return i < 0 ? null : tok.get(i + 2);
  }

  static public File tempDirPossiblyInRAMDisk() {
    File f = linux_fileInRamDisk(aGlobalID());
    if (f != null) {
      f.mkdirs();
      return f;
    }
    return makeTempDir();
  }

  static public File pathToJavaxJar() {
    try {
      IResourceLoader rl = vm_getResourceLoader();
      if (rl != null)
        return rl.pathToJavaXJar();
      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 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 String cleanJavaCompilerOutput(String s) {
    return dropPrefixTrim("Annotation processing got disabled, since it requires a 1.6 compliant JVM", s);
  }

  static public String appendWithNewLine(String a, String b) {
    if (empty(b))
      return a;
    if (empty(a))
      return b;
    return addSuffix(a, "\n") + b;
  }

  static public boolean anyFileWithExtensionInDir(File dir, String ext) {
    return nempty(filesWithExtension(ext, findAllFiles_noDirs(dir)));
  }

  static public <A> A printWithIndent(A o) {
    return printIndent(o);
  }

  static public <A> A printWithIndent(String indent, A o) {
    return printIndent(indent, o);
  }

  static public void printWithIndent(int indent, Object o) {
    printIndent(indent, o);
  }

  static public String nChars(int n) {
    return n2(n, "char");
  }

  static public String nChars(String s) {
    return nChars(l(s));
  }

  static public boolean dir2zip_recurse_verbose = false;

  static public int dir2zip_recurse(File inDir, File zip) {
    return dir2zip_recurse(inDir, zip, "");
  }

  static public int dir2zip_recurse(File inDir, File zip, String outPrefix) {
    try {
      mkdirsForFile(zip);
      FileOutputStream fout = newFileOutputStream(zip);
      ZipOutputStream outZip = new ZipOutputStream(fout);
      try {
        return dir2zip_recurse(inDir, outZip, outPrefix, 0);
      } finally {
        outZip.close();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int dir2zip_recurse(File inDir, ZipOutputStream outZip) {
    return dir2zip_recurse(inDir, outZip, "", 0);
  }

  static public int dir2zip_recurse(File inDir, ZipOutputStream outZip, String outPrefix, int level) {
    try {
      if (++level >= 20)
        throw fail("woot? 20 levels in zip?");
      List<File> files = new ArrayList();
      for (File f : listFiles(inDir)) files.add(f);
      int n = 0;
      sortFilesByName(files);
      for (File f : files) {
        if (f.isDirectory()) {
          print("dir2zip_recurse: Scanning " + f.getAbsolutePath());
          n += dir2zip_recurse(f, outZip, outPrefix + f.getName() + "/", level);
        } else {
          if (dir2zip_recurse_verbose)
            print("Copying " + f.getName());
          outZip.putNextEntry(new ZipEntry(outPrefix + f.getName()));
          InputStream fin = new FileInputStream(f);
          copyStream(fin, outZip);
          fin.close();
          ++n;
        }
      }
      return n;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isInRAMDisk(File f) {
    return startsWith(f2s(f), "/dev/shm");
  }

  static public void deleteDirectory(File dir) {
    deleteDirectory(dir, false, false);
  }

  static public void deleteDirectory(File dir, boolean verbose, boolean testRun) {
    deleteAllFilesInDirectory(dir, verbose, testRun);
    if (verbose)
      print((testRun ? "Would delete " : "Deleting ") + dir.getAbsolutePath());
    if (!testRun)
      dir.delete();
  }

  static public void closeRandomAccessFile(RandomAccessFile f) {
    if (f != null)
      try {
        f.close();
        callJavaX("dropIO", f);
      } catch (Throwable e) {
        printStackTrace(e);
      }
  }

  static public RandomAccessFile newRandomAccessFile(File path, String mode) throws IOException {
    boolean forWrite = mode.indexOf('w') >= 0;
    if (forWrite)
      mkdirsForFile(path);
    RandomAccessFile f = new RandomAccessFile(path, mode);
    callJavaX("registerIO", f, path, forWrite);
    return f;
  }

  static public AccessControlContext vm_globalACC() {
    return (AccessControlContext) vm_generalMap_get("Global ACC");
  }

  static public void replaceACCInClassLoader(Object o, AccessControlContext newACC) {
    ClassLoader cl = getClassLoaderOrSame(o);
    if (cl instanceof URLClassLoader) {
      try {
        setOpt(cl, "acc", newACC);
        try {
          setOpt((Object) getOpt(cl, "ucp"), "acc", newACC);
        } catch (Throwable e) {
          printShortException("replaceACCInClassLoader: ", e);
          if (java10OrHigher())
            if (addDefaultVMOption("--add-opens java.base/jdk.internal.loader=ALL-UNNAMED"))
              print("Please restart the OS");
        }
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public String intToHex(int i) {
    return bytesToHex(intToBytes(i));
  }

  static public int identityHashCode(Object o) {
    return System.identityHashCode(o);
  }

  static public String fsI_flex(String s) {
    return startsWithDigit(s) ? "#" + s : s;
  }

  static public DialogIO talkToSubBot(final long vport, final DialogIO io) {
    return talkToSubBot(String.valueOf(vport), io);
  }

  static public DialogIO talkToSubBot(final String subBot, final DialogIO io) {
    if (subBot == null)
      return io;
    return new talkToSubBot_IO(subBot, io);
  }

  static public class talkToSubBot_IO extends DialogIO {

    public String subBot;

    public DialogIO io;

    public talkToSubBot_IO(String subBot, DialogIO io) {
      this.io = io;
      this.subBot = subBot;
    }

    public boolean isStillConnected() {
      return io.isStillConnected();
    }

    public String readLineImpl() {
      return io.readLineImpl();
    }

    public boolean isLocalConnection() {
      return io.isLocalConnection();
    }

    public Socket getSocket() {
      return io.getSocket();
    }

    public void close() {
      try {
        io.close();
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public void sendLine(String line) {
      io.sendLine(format3("please forward to bot *: *", subBot, line));
    }
  }

  static public DialogIO talkTo(int port) {
    return talkTo("localhost", port);
  }

  static public int talkTo_defaultTimeout = 10000;

  static public int talkTo_timeoutForReads = 0;

  static public ThreadLocal<Map<String, DialogIO>> talkTo_byThread = new ThreadLocal();

  static public DialogIO talkTo(String ip, int port) {
    try {
      String full = ip + ":" + port;
      Map<String, DialogIO> map = talkTo_byThread.get();
      if (map != null && map.containsKey(full))
        return map.get(full);
      if (isLocalhost(ip) && port == vmPort())
        return talkToThisVM();
      return new talkTo_IO(ip, port);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public class talkTo_IO extends DialogIO {

    public String ip;

    public int port;

    public Socket s;

    public Writer w;

    public BufferedReader in;

    public talkTo_IO(String ip, int port) {
      this.port = port;
      this.ip = ip;
      try {
        s = new Socket();
        try {
          if (talkTo_timeoutForReads != 0)
            s.setSoTimeout(talkTo_timeoutForReads);
          s.connect(new InetSocketAddress(ip, port), talkTo_defaultTimeout);
        } catch (Throwable e) {
          throw fail("Tried talking to " + ip + ":" + port, e);
        }
        w = new OutputStreamWriter(s.getOutputStream(), "UTF-8");
        in = new BufferedReader(new InputStreamReader(s.getInputStream(), "UTF-8"));
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public boolean isLocalConnection() {
      return s.getInetAddress().isLoopbackAddress();
    }

    public boolean isStillConnected() {
      return !(eos || s.isClosed());
    }

    public void sendLine(String line) {
      try {
        Lock __0 = lock;
        lock(__0);
        try {
          w.write(line + "\n");
          w.flush();
        } finally {
          unlock(__0);
        }
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public String readLineImpl() {
      try {
        return in.readLine();
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public void close() {
      try {
        if (!noClose)
          s.close();
      } catch (IOException e) {
      }
    }

    public Socket getSocket() {
      return s;
    }
  }

  static public List<ProgramScan.Program> quickBotScan() {
    return ProgramScan.quickBotScan();
  }

  static public List<ProgramScan.Program> quickBotScan(int[] preferredPorts) {
    return ProgramScan.quickBotScan(preferredPorts);
  }

  static public List<ProgramScan.Program> quickBotScan(String searchPattern) {
    List<ProgramScan.Program> l = new ArrayList<ProgramScan.Program>();
    for (ProgramScan.Program p : ProgramScan.quickBotScan()) if (indexOfIgnoreCase(p.helloString, searchPattern) == 0)
      l.add(p);
    return l;
  }

  static public String firstPartOfHelloString(String s) {
    int i = s.lastIndexOf('/');
    return i < 0 ? s : rtrim(s.substring(0, i));
  }

  static public String sendToLocalBotQuietly(String bot, String text, Object... args) {
    text = format3(text, args);
    DialogIO channel = newFindBot2(bot);
    try {
      if (channel == null)
        throw fail(quote(bot) + " not found");
      try {
        channel.readLine();
        channel.sendLine(text);
        String s = channel.readLine();
        return s;
      } catch (Throwable e) {
        e.printStackTrace();
        return null;
      }
    } finally {
      _close(channel);
    }
  }

  static public String sendToLocalBotQuietly(int port, String text, Object... args) {
    text = format3(text, args);
    DialogIO channel = talkTo(port);
    try {
      try {
        channel.readLine();
        channel.sendLine(text);
        String s = channel.readLine();
        return s;
      } catch (Throwable e) {
        e.printStackTrace();
        return null;
      }
    } finally {
      _close(channel);
    }
  }

  static public Class hotwireOnce(String programID) {
    return hotwireCached(programID, false);
  }

  static public String getBotAddress(String bot) {
    List<ScannedBot> l = fullBotScan(bot);
    return empty(l) ? null : first(l).address;
  }

  static public Object unstructure_matchOK2OrFail(String s) {
    if (swic(s, "ok "))
      return unstructure_startingAtIndex(s, 3);
    else
      throw fail(s);
  }

  static public String sendToLocalBot(String bot, String text, Object... args) {
    text = format3(text, args);
    DialogIO channel = findBot(bot);
    try {
      if (channel == null)
        throw fail(quote(bot) + " not found");
      try {
        channel.readLine();
        print(bot + "> " + shorten(text, 80));
        channel.sendLine(text);
        String s = channel.readLine();
        print(bot + "< " + shorten(s, 80));
        return s;
      } catch (Throwable e) {
        e.printStackTrace();
        return null;
      }
    } finally {
      _close(channel);
    }
  }

  static public String sendToLocalBot(int port, String text, Object... args) {
    text = format3(text, args);
    DialogIO channel = talkTo(port);
    try {
      try {
        channel.readLine();
        print(port + "> " + shorten(text, 80));
        channel.sendLine(text);
        String s = channel.readLine();
        print(port + "< " + shorten(s, 80));
        return s;
      } catch (Throwable e) {
        e.printStackTrace();
        return null;
      }
    } finally {
      _close(channel);
    }
  }

  static public String format(String pat, Object... args) {
    return format3(pat, args);
  }

  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 boolean isNonNegativeInteger(String s) {
    int n = l(s);
    if (n == 0)
      return false;
    int i = 0;
    while (i < n) {
      char c = s.charAt(i);
      if (c < '0' || c > '9')
        return false;
      ++i;
    }
    return true;
  }

  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(dbBotStandardName());
  }

  static public Android3 dbBot(String name) {
    ensureDBNotRunning(name);
    return dbBot_instance = methodsBot2(name, assertNotNull(db_mainConcepts()), db_standardExposedMethods(), db_mainConcepts().lock);
  }

  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 Set<String> fieldNames(Object o) {
    return allFields(o);
  }

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

  static public List mapNonNulls(Object f, Iterable l) {
    List x = new ArrayList();
    if (l != null)
      for (Object o : l) addIfNotNull(x, callF(f, o));
    return x;
  }

  static public List mapNonNulls(Object f, Object[] l) {
    List x = new ArrayList();
    if (l != null)
      for (Object o : l) addIfNotNull(x, callF(f, o));
    return x;
  }

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

  static public <A, B> List<B> mapNonNulls(F1<A, B> f, Iterable<A> l) {
    List x = new ArrayList();
    if (l != null)
      for (Object o : l) addIfNotNull(x, callF(f, o));
    return x;
  }

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

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

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

  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 Runnable _topLevelErrorHandling(final Runnable runnable) {
    final Object info = _threadInfo();
    return new Runnable() {

      public void run() {
        try {
          try {
            _threadInheritInfo(info);
            runnable.run();
          } catch (Throwable __e) {
            _handleException(__e);
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pcall {\r\n      _threadInheritInfo(info);\r\n      runnable.run();\r\n    }";
      }
    };
  }

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

  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 List<File> sortFilesByName(List<File> l) {
    sort(l, new Comparator<File>() {

      public int compare(File a, File b) {
        return stdcompare(a.getName(), b.getName());
      }
    });
    return l;
  }

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

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

  static public int localYear() {
    return localYear(now());
  }

  static public int localYear(long time) {
    return parseInt(simpleDateFormat_local("yyyy").format(time));
  }

  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 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 int findEndOfBlock(List<String> cnc, int i) {
    int j = i + 2, level = 1, n = cnc.size();
    while (j < n) {
      String t = cnc.get(j);
      if ("{".equals(t))
        ++level;
      else if ("}".equals(t))
        --level;
      if (level == 0)
        return j + 1;
      j += 2;
    }
    return n;
  }

  static public boolean tok_isJavaxMetaCommandLeftOf(List<String> tok, int i) {
    int j = i - 2 * 4 - 1;
    if (j >= 0 && jfind(subList(tok, j, i), "set flag <id> .") == 1)
      return true;
    return false;
  }

  static public <A> boolean eqGetOneOf(List<A> l, int i, A... options) {
    return eqOneOf(get(l, i), options);
  }

  static public int leftScanModifiers(List<String> tok, int i) {
    List<String> mod = getJavaModifiers();
    while (i > 1 && mod.contains(tok.get(i - 2))) i -= 2;
    return i;
  }

  static public List<String> codeTokensOnly(List<String> tok) {
    int n = tok.size();
    List<String> l = emptyList(n / 2);
    for (int i = 1; i < n; i += 2) l.add(tok.get(i));
    return l;
  }

  static public File makeTempDir() {
    return (File) call(getJavaX(), "TempDirMaker_make");
  }

  static public File linux_fileInRamDisk(String name) {
    if (!isLinux())
      return null;
    File dir = newFile("/dev/shm");
    if (dir.isDirectory())
      return newFile(dir, name);
    return null;
  }

  static public int latestInstalledJavaX() {
    File[] files = new File(userHome(), ".javax").listFiles();
    int v = 0;
    if (files != null)
      for (File f : files) {
        Matcher m = Pattern.compile("x(\\d\\d\\d?)\\.jar").matcher(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 int indent_default = 2;

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

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

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

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

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

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

  static public List<File> filesWithExtension(String ext, List<File> files) {
    return filesEndingWith(files, addPrefixIfNotEmpty2(".", ext));
  }

  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 int deleteAllFilesInDirectory_minPathLength = 10;

  static public void deleteAllFilesInDirectory(File dir) {
    deleteAllFilesInDirectory(dir, false, false);
  }

  static public void deleteAllFilesInDirectory(File dir, boolean verbose, boolean testRun) {
    dir = getCanonicalFile(dir);
    assertTrue(f2s(dir), l(f2s(dir)) >= deleteAllFilesInDirectory_minPathLength);
    File[] files = dir.listFiles();
    if (files == null)
      return;
    for (File f : files) {
      if (!isSymLink(f) && f.isDirectory())
        deleteDirectory(f, verbose, testRun);
      else {
        if (verbose)
          print((testRun ? "Would delete " : "Deleting ") + f.getAbsolutePath());
        if (!testRun)
          f.delete();
      }
    }
  }

  static public Object callJavaX(String method, Object... args) {
    return callOpt(getJavaX(), method, args);
  }

  static public ClassLoader getClassLoaderOrSame(Object o) {
    return o instanceof ClassLoader ? (ClassLoader) o : getClassLoader(o);
  }

  static public boolean java10OrHigher() {
    return parseFirstInt(javaVersion()) >= 10;
  }

  static public boolean addDefaultVMOption(String option) {
    String s = defaultVMArgs(), old = s;
    if (!s.contains(option))
      s = trim(s + " " + option);
    if (eq(old, s))
      return false;
    {
      setDefaultVMArgs(s);
      return true;
    }
  }

  static public byte[] intToBytes(int i) {
    return new byte[] { (byte) (i >>> 24), (byte) (i >>> 16), (byte) (i >>> 8), (byte) i };
  }

  static public boolean isLocalhost(String ip) {
    return isLoopbackIP(ip) || eqic(ip, "localhost");
  }

  static public int vmPort() {
    return myVMPort();
  }

  static public DialogIO talkToThisVM() {
    return new talkToThisVM_IO();
  }

  static public class talkToThisVM_IO extends DialogIO {

    public List<String> answers = ll(thisVMGreeting());

    public boolean isLocalConnection() {
      return true;
    }

    public boolean isStillConnected() {
      return true;
    }

    public int getPort() {
      return vmPort();
    }

    public void sendLine(String line) {
      answers.add(or2(sendToThisVM_newThread(line), "?"));
    }

    public String readLineImpl() {
      try {
        return popFirst(answers);
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public void close() {
    }

    public Socket getSocket() {
      return null;
    }
  }

  static public Map<String, Integer> newFindBot2_cache = synchroHashMap();

  static public boolean newFindBot2_verbose = false;

  static public DialogIO newFindBot2(String name) {
    Integer port = newFindBot2_cache.get(name);
    if (port != null) {
      if (newFindBot2_verbose)
        print("newFindBot2: testing " + name + " => " + port);
      DialogIO io = talkTo(port);
      String q = format("has bot *", name);
      String s = io.ask(q);
      if (match("yes", s)) {
        io = talkToSubBot(name, io);
        call(io, "pushback", "?");
        return io;
      }
      newFindBot2_cache.remove(name);
      if (newFindBot2_verbose)
        print("newFindBot2: dropping " + name + " => " + port);
    }
    DialogIO io = findBot(name);
    if (io != null) {
      newFindBot2_cache.put(name, io.getPort());
      if (newFindBot2_verbose)
        print("newFindBot2: remembering " + name + " => " + port);
    }
    return io;
  }

  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 class ScannedBot {

    public String helloString;

    public String address;

    public ScannedBot(String helloString, String address) {
      this.address = address;
      this.helloString = helloString;
    }

    public ScannedBot() {
    }
  }

  static public List<ScannedBot> fullBotScan() {
    return fullBotScan("");
  }

  static public List<ScannedBot> fullBotScan(String searchPattern) {
    List<ScannedBot> bots = new ArrayList();
    for (ProgramScan.Program p : quickBotScan()) {
      String botName = firstPartOfHelloString(p.helloString);
      boolean isVM = startsWithIgnoreCase(p.helloString, "This is a JavaX VM.");
      boolean shouldRecurse = swic(botName, "Multi-Port") || isVM;
      if (swic(botName, searchPattern))
        bots.add(new ScannedBot(botName, "" + p.port));
      if (shouldRecurse)
        try {
          Map<Number, String> subBots = (Map) unstructure(sendToLocalBotQuietly(p.port, "list bots"));
          for (Number vport : subBots.keySet()) {
            botName = subBots.get(vport);
            if (swic(botName, searchPattern))
              bots.add(new ScannedBot(botName, p.port + "/" + vport));
          }
        } catch (Exception e) {
          e.printStackTrace();
        }
    }
    return bots;
  }

  static public Object unstructure_startingAtIndex(String s, int i) {
    return unstructure_tok(javaTokC_noMLS_iterator(s, i), false, null);
  }

  static public void consoleClearInput() {
    consoleSetInput("");
  }

  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 boolean hasBot(String searchPattern) {
    try {
      DialogIO io = findBot(searchPattern);
      if (io != null) {
        io.close();
        return true;
      } else
        return false;
    } catch (Exception __e) {
      throw rethrow(__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 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 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 SimpleDateFormat simpleDateFormat_local(String format) {
    SimpleDateFormat sdf = new SimpleDateFormat(format);
    sdf.setTimeZone(localTimeZone());
    return sdf;
  }

  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 List<String> getJavaModifiers_list = litlist("static", "abstract", "public", "private", "protected", "final", "native", "volatile", "synchronized", "transient");

  static public List<String> getJavaModifiers() {
    return getJavaModifiers_list;
  }

  static public Cache<Boolean> isLinux_cache = new Cache("isLinux_load");

  static public boolean isLinux() {
    return isLinux_cache.get();
  }

  static public Boolean isLinux_load() {
    return !isWindows() && !isMac() && !isAndroid();
  }

  static public List<File> filesEndingWith(File dir, String suffix) {
    return listFilesWithSuffix(dir, suffix);
  }

  static public List<File> filesEndingWith(List<File> l, String suffix) {
    List<File> out = new ArrayList();
    for (File f : unnull(l)) if (!f.isDirectory() && (empty(suffix) || endsWithIgnoreCase(f.getName(), suffix)))
      out.add(f);
    return out;
  }

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

  static public File getCanonicalFile(File f) {
    try {
      return f == null ? null : f.getCanonicalFile();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public ClassLoader getClassLoader(Object o) {
    return o == null ? null : _getClass(o).getClassLoader();
  }

  static public int parseFirstInt(String s) {
    return parseInt(jextract("<int>", s));
  }

  static public String javaVersion() {
    return System.getProperty("java.version");
  }

  static public String defaultVMArgs() {
    return javaxDefaultVMArgs();
  }

  static public void setDefaultVMArgs(String args) {
    String oldArgs = javaxDefaultVMArgs();
    args = trim(args);
    if (neq(unnull(oldArgs), unnull(args))) {
      print();
      print("Changing default VM arguments from");
      print("  " + oldArgs);
      print("to");
      print("  " + args);
      print();
      saveTextFile(javaxDataDir("default-vm-args"), nullIfEmpty(args));
    }
  }

  static public boolean isLoopbackIP(String ip) {
    return eq(ip, "127.0.0.1");
  }

  static public int myVMPort() {
    List records = (List) (get(getJavaX(), "record_list"));
    Object android = last(records);
    return or0((Integer) get(android, "port"));
  }

  static public String thisVMGreeting() {
    List record_list = (List) (get(getJavaX(), "record_list"));
    Object android = first(record_list);
    return getString(android, "greeting");
  }

  static public String sendToThisVM_newThread(String s, Object... args) {
    final String _s = format(s, args);
    try {
      return (String) evalInNewThread(new F0<Object>() {

        public Object get() {
          try {
            return callStaticAnswerMethod(getJavaX(), _s);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "ret callStaticAnswerMethod(getJavaX(), _s);";
        }
      });
    } catch (Throwable e) {
      e = getInnerException(e);
      printStackTrace(e);
      return str(e);
    }
  }

  static public void consoleSetInput(final String text) {
    if (headless())
      return;
    setTextAndSelectAll(consoleInputField(), text);
    focusConsole();
  }

  static public BufferedImage imageIO_readURL(String url) {
    try {
      if (startsWith(url, "https:"))
        disableCertificateValidation();
      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 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 String sendToLocalBotOpt(String bot, String text, Object... args) {
    if (bot == null)
      return null;
    text = format(text, args);
    DialogIO channel = findBot(bot);
    try {
      if (channel == null) {
        print(quote(bot) + " not found, skipping send: " + quote(text));
        return null;
      }
      try {
        channel.readLine();
        print(shorten(bot + "> " + text, 200));
        channel.sendLine(text);
        String s = channel.readLine();
        print(shorten(bot + "< " + s, 200));
        return s;
      } catch (Throwable e) {
        e.printStackTrace();
        return null;
      }
    } finally {
      _close(channel);
    }
  }

  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 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 TimeZone localTimeZone() {
    return getTimeZone(standardTimeZone());
  }

  public static boolean isWindows() {
    return System.getProperty("os.name").contains("Windows");
  }

  static public boolean isMac() {
    return System.getProperty("os.name").toLowerCase().contains("mac");
  }

  static public String jextract(String pat, String s) {
    return jextract(pat, javaTok(s));
  }

  static public String jextract(String pat, List<String> tok) {
    List<String> tokpat = javaTok(pat);
    jfind_preprocess(tokpat);
    int i = jfind(tok, tokpat);
    if (i < 0)
      return null;
    int j = i + l(tokpat) - 2;
    return joinSubList(tok, i, j);
  }

  static public String javaxDefaultVMArgs() {
    File fileNew, fileOld;
    String text = loadTextFile(fileNew = javaxDataDir("default-vm-args"));
    if (text == null) {
      text = loadTextFile(fileOld = programFile("#1005850", "default-vm-args"));
      if (text != null)
        moveFile(fileOld, fileNew);
    }
    return trim(unnull(text));
  }

  static public 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 int or0(Integer i) {
    return i == null ? 0 : i;
  }

  static public long or0(Long l) {
    return l == null ? 0L : l;
  }

  static public double or0(Double d) {
    return d == null ? 0.0 : d;
  }

  static public Object evalInNewThread(final Object f) {
    final Flag flag = new Flag();
    final Var var = new Var();
    final Var<Throwable> exception = new Var();
    {
      startThread(new Runnable() {

        public void run() {
          try {
            try {
              var.set(callF(f));
            } catch (Throwable e) {
              exception.set(e);
            }
            flag.raise();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "try {\r\n      var.set(callF(f));\r\n    } catch (Throwable e) {\r\n      exception...";
        }
      });
    }
    flag.waitUntilUp();
    if (exception.has())
      throw rethrow(exception.get());
    return var.get();
  }

  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 boolean headless() {
    return isHeadless();
  }

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

  static public void focusConsole(String s) {
    setConsoleInput(s);
    focusConsole();
  }

  static public void focusConsole() {
    JComponent tf = consoleInputFieldOrComboBox();
    if (tf != null) {
      tf.requestFocus();
    }
  }

  static public String ok2(String s) {
    return "ok " + s;
  }

  static public boolean makeAndroid3_disable = false;

  static public class Android3 {

    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() {
    }

    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 Runnable asRunnable(Object o) {
    return toRunnable(o);
  }

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

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

  static public String standardTimeZone_name = "Europe/Berlin";

  static public String standardTimeZone() {
    return standardTimeZone_name;
  }

  static public 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 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 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 void removeFromMultiPort(long vport) {
    if (vport == 0)
      return;
    for (Object port : getMultiPorts()) call(port, "removePort", vport);
  }

  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 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 List<Object> getMultiPorts() {
    return (List) callOpt(getJavaX(), "getMultiPorts");
  }

  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 boolean forbiddenPort(int port) {
    return port == 5037;
  }

  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 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 String getSnippetTitle(String id) {
    try {
      if (id == null)
        return null;
      if (!isSnippetID(id))
        return "?";
      IResourceLoader rl = vm_getResourceLoader();
      if (rl != null)
        return rl.getSnippetTitle(id);
      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 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 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 boolean saveTextFileIfDifferent(File f, String contents) {
    if (eq(loadTextFile(f), contents))
      return false;
    {
      saveTextFile(f, contents);
      return true;
    }
  }

  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 int smartLastIndexOf(String s, char c) {
    if (s == null)
      return 0;
    int i = s.lastIndexOf(c);
    return i >= 0 ? i : l(s);
  }

  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 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 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 addPrefixOptIfNempty(String prefix, String s) {
    return addPrefixIfNotEmpty2(prefix, s);
  }

  static public class Str extends Concept {

    public String name;

    public List<String> otherNames = new ArrayList();

    public Str() {
    }

    public Str(String name) {
      this.name = name;
    }

    public String toString() {
      return name;
    }
  }

  static public class ProgramScan {

    static public int threads = isWindows() ? 500 : 10;

    static public int timeout = 5000;

    static public String ip = "127.0.0.1";

    static public int quickScanFrom = 10000, quickScanTo = 10999;

    static public int maxNumberOfVMs_android = 4;

    static public int maxNumberOfVMs_nonAndroid = 50;

    static public int maxNumberOfVMs;

    static public boolean verbose = false;

    static public class Program {

      public int port;

      public String helloString;

      public Program(int port, String helloString) {
        this.helloString = helloString;
        this.port = port;
      }
    }

    static public List<Program> scan() {
      try {
        return scan(1, 65535);
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    static public List<Program> scan(int fromPort, int toPort) {
      return scan(fromPort, toPort, new int[0]);
    }

    static public List<Program> scan(int fromPort, int toPort, int[] preferredPorts) {
      try {
        Set<Integer> preferredPortsSet = new HashSet<Integer>(asList(preferredPorts));
        int scanSize = toPort - fromPort + 1;
        String name = toPort < 10000 ? "bot" : "program";
        int threads = isWindows() ? min(500, scanSize) : min(scanSize, 10);
        final ExecutorService es = Executors.newFixedThreadPool(threads);
        if (verbose)
          print(firstToUpper(name) + "-scanning " + ip + " with timeout " + timeout + " ms in " + threads + " threads.");
        startTiming();
        List<Future<Program>> futures = new ArrayList();
        List<Integer> ports = new ArrayList();
        for (int port : preferredPorts) {
          futures.add(checkPort(es, ip, port, timeout));
          ports.add(port);
        }
        for (int port = fromPort; port <= toPort; port++) if (!preferredPortsSet.contains(port) && !forbiddenPort(port)) {
          futures.add(checkPort(es, ip, port, timeout));
          ports.add(port);
        }
        es.shutdown();
        List<Program> programs = new ArrayList();
        long time = now();
        int i = 0;
        for (final Future<Program> f : futures) {
          if (verbose)
            print("Waiting for port " + get(ports, i++) + " at time " + (now() - time));
          Program p = f.get();
          if (p != null)
            programs.add(p);
        }
        if (verbose)
          print("Found " + programs.size() + " " + name + "(s) on " + ip);
        return programs;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    static public Future<Program> checkPort(final ExecutorService es, final String ip, final int port, final int timeout) {
      return es.submit(new Callable<Program>() {

        @Override
        public Program call() {
          try {
            Socket socket = new Socket();
            try {
              socket.setSoTimeout(timeout);
              socket.connect(new InetSocketAddress(ip, port), timeout);
              BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF-8"));
              String hello = or(in.readLine(), "?");
              return new Program(port, hello);
            } finally {
              socket.close();
            }
          } catch (Exception ex) {
            return null;
          }
        }
      });
    }

    static public List<Program> quickScan() {
      return scan(quickScanFrom, quickScanTo);
    }

    static public List<Program> quickBotScan() {
      return quickBotScan(new int[0]);
    }

    static public List<Program> quickBotScan(int[] preferredPorts) {
      if (maxNumberOfVMs == 0)
        maxNumberOfVMs = isAndroid() ? maxNumberOfVMs_android : maxNumberOfVMs_nonAndroid;
      return scan(4999, 5000 + maxNumberOfVMs - 1, preferredPorts);
    }
  }

  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 class Flag implements Runnable {

    public boolean up = false;

    public synchronized boolean raise() {
      if (!up) {
        up = true;
        notifyAll();
        return true;
      } else
        return false;
    }

    public synchronized void waitUntilUp() {
      while (!up) {
        try {
          wait();
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }

    public synchronized void waitUntilUp(long timeout) {
      if (!up) {
        try {
          wait(timeout);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }

    public synchronized boolean isUp() {
      return up;
    }

    public boolean get() {
      return isUp();
    }

    public String toString() {
      return isUp() ? "up" : "down";
    }

    public void waitForThisOr(Flag otherFlag) {
      try {
        while (!isUp() && !otherFlag.isUp()) Thread.sleep(50);
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

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

  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 A get() {
      if (hasLock(lock))
        return value;
      Lock __0 = lock;
      lock(__0);
      try {
        if (loaded == 0) {
          value = make();
          changeCount++;
          loaded = sysNow();
        }
        return value;
      } finally {
        unlock(__0);
      }
    }

    public void clear() {
      Lock __1 = lock;
      lock(__1);
      try {
        if (debug && loaded != 0)
          print("Clearing cache");
        value = null;
        changeCount++;
        loaded = 0;
      } finally {
        unlock(__1);
      }
    }

    public void clear(double seconds) {
      Lock __2 = lock;
      lock(__2);
      try {
        if (seconds != 0 && loaded != 0 && sysNow() >= loaded + seconds * 1000)
          clear();
      } finally {
        unlock(__2);
      }
    }

    public void set(A a) {
      Lock __3 = lock;
      lock(__3);
      try {
        value = a;
        ++changeCount;
        loaded = sysNow();
      } finally {
        unlock(__3);
      }
    }

    public A make() {
      return (A) callF(maker);
    }
  }

  static public long stopTiming_defaultMin = 10;

  static public long startTiming_startTime;

  static public void startTiming() {
    startTiming_startTime = now();
  }

  static public void stopTiming() {
    stopTiming(null);
  }

  static public void stopTiming(String text) {
    stopTiming(text, stopTiming_defaultMin);
  }

  static public void stopTiming(String text, long minToPrint) {
    long time = now() - startTiming_startTime;
    if (time >= minToPrint) {
      text = or2(text, "Time: ");
      print(text + time + " ms");
    }
  }

  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 int roundToInt(double d) {
    return (int) Math.round(d);
  }
}