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 java.util.function.*;
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 java.awt.geom.*;
import javax.imageio.*;
import java.math.*;
import java.time.Duration;
import java.lang.invoke.VarHandle;
import java.lang.invoke.MethodHandles;


// NOTE: make sure the SOA is correct!

import java.text.*;
import java.nio.charset.Charset;
import java.text.SimpleDateFormat;
import java.util.TimeZone;
import java.awt.geom.*;
import static x30_pkg.x30_util.DynamicObject;
import java.text.NumberFormat;

import se.unlogic.eagledns.EagleDNS;

class main {

static double refreshEvery = 0 /*60*/;
static int smartBotTimeOut = 60*30;

static String zone = "\r\nbotcompany.de. IN    SOA   ns1.stefantrades.pro.  stefan\\.reich\\.maker\\.of\\.eye.gmail.com.  (\r\n                                        20190925     ; Serial\r\n                                        60M     ; Refresh\r\n                                        15M     ; Retry\r\n                                        7D      ; Expiry\r\n                                        30M )   ; Minimum\r\n@                       IN      NS      ns1.stefantrades.pro.\r\n@                       IN      NS      ns2.stefantrades.pro.\r\n@                       IN      A       167.86.121.181\r\nc8                      IN      A       167.86.121.181\r\nhome                300 IN      A       2.203.147.51\r\noldmain                 IN      A       185.183.156.46\r\ncoffee                  IN      A       195.154.179.147\r\n*.coffee                IN      A       195.154.179.147\r\nvnc-coffee              IN      A       195.154.179.147\r\ntranspile-coffee        IN      A       195.154.179.147\r\navor                    IN      A       195.154.179.147\r\nrobin-avor              IN      A       195.154.179.147\r\nchristian-avor          IN      A       195.154.179.147\r\navor-qa                 IN      A       195.154.179.147\r\n*.avor-qa               IN      A       195.154.179.147\r\ncruddie                 IN      A       195.154.179.147\r\n*.cruddie               IN      A       195.154.179.147\r\nstripe-test             IN      A       195.154.179.147\r\nmeta-bot                IN      A       195.154.179.147\r\nada-v2                  IN      A       195.154.179.147\r\nfia                     IN      A       195.154.179.147\r\ne-buck                  IN      A       195.154.179.147\r\nada-aws                 IN      A       18.233.63.26\r\n; sometimes the * entry doesn't work? vnc.botcompany.de caused NXDOMAIN\r\n*                       IN      A       167.86.121.181\r\nvnc                     IN      A       167.86.121.181\r\ncode                    IN      A       167.86.121.181\r\nwww                     IN      A       167.86.121.181\r\nbutter                  IN      A       167.86.121.181\r\nstefans-os              IN      A       167.86.121.181\r\nsmartbot                IN      A       167.86.121.181\r\ncreate                  IN      A       167.86.121.181\r\nmail                    IN      A       167.86.121.181\r\njavax                   IN      A       167.86.121.181\r\nada                     IN      A       167.86.121.181\r\nmech                    IN      A       167.86.121.181\r\ntheadmi                 IN      A       176.58.127.141\r\ntheadmi2                IN      A       176.58.127.141\r\ntester                  IN      A       144.126.145.56\r\ngazellebot              IN      A       173.212.209.120\r\n;pays5-bot               IN      A       173.212.209.120\r\npays5-bot               IN      A       195.154.179.147\r\nbea-bot                 IN      A       173.212.209.120\r\ntlc                     IN      A       195.154.179.147\r\nbig                     IN      A       192.99.13.227\r\n;@                       MX      10      mail1.domainssaubillig.de.\r\n@                       MX      10      mail.botcompany.de.\r\nmail                    MX      10      mail.botcompany.de.\r\n_acme-challenge.botcompany.de. IN      TXT   \"aWAwa7cLpPcFoIylAqQn13tmNyfZ6H36GUt2dFyt-eM\"\r\nbotcompany.de.          IN      TXT     \"google-site-verification=YL5Hu5zvww8np30b4LLv_fgK0rppl2uzUKe8-14Gk98\"\r\n";

// Note: zone2 not active yet

static String zone2 = "\r\ngazelle.rocks. IN    SOA   ns1.stefantrades.pro.  stefan\\.reich\\.maker\\.of\\.eye.gmail.com.  (\r\n                                        20190101     ; Serial\r\n                                        5M     ; Refresh\r\n                                        15M     ; Retry\r\n                                        7D      ; Expiry\r\n                                        30M )   ; Minimum\r\n@                       IN      NS      ns1.stefantrades.pro.\r\n@                       IN      NS      ns2.stefantrades.pro.\r\n@                       IN      A       173.212.209.120\r\n*                       IN      A       173.212.209.120\r\n;@                       MX      10      mail1.domainssaubillig.de.\r\n";

 // dnsjava
 // EagleDNS
 // log4j



static File zonesDir;
static EagleDNS eagleDNS;

public static void main(final String[] args) throws Exception {
  tryToAcquirePort5000();
  
  String conf = loadSnippet("#1010767");
  zonesDir = programFile("zones");
  saveZones();
  
  conf = conf.replace(
    "<Property name=\"zoneFileDirectory\">zones</Property>",
    "<Property name=\"zoneFileDirectory\">" + f2s(zonesDir) + "</Property>");
  File configFile = saveProgramTextFile("config.xml", conf);
  
  //eagleDNS = nuObject("se.unlogic.eagledns.EagleDNS", f2s(configFile));
  print("Making EagleDNS.");
  try {
    eagleDNS = new EagleDNS(f2s(configFile));
  } catch (Throwable __e) { pcallFail(__e); }
  
  // For some weird reason, on the servers, no lines are printed
  // after this point... but they still execute!? (Auto-reload works.)
  
  printAndProgramLog("Made EagleDNS." + (eagleDNS == null ? "..not" : ""));
  bot("Eagle DNS.");
  if (refreshEvery != 0) doEvery_daemon(refreshEvery, new Runnable() {  public void run() { try {  refresh(); 
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "refresh();"; }});
  
  // Restart after successful transpile
  
  print("Making SnippetUpdateConnector.");
  ownResource(snippetUpdateConnector("verbose" , true));
  
  ownResource(vmBus_onMessage("snippetUpdate", new VF1<List>() { public void get(List l) { try { 
    print("Got snippet update: " + l);
    String uri = getString(l, 1);
    Matches m = new Matches();
    if (swic(uri, "/transpileOK/", m))
      if (sameSnippetID(programID(), firstIntAsString(m.rest()))) {
        programLog("Restarting");
        restart();
      }
   } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "print(\"Got snippet update: \" + l);\r\n    S uri = getString(l, 1);\r\n    new Mat..."; }}));
}

static String answer(String s) {
final Matches m = new Matches();

  if (match("test", s)) return "OK";
  if (match("refresh", s)) {
    refresh();
    return "OK";
  }

return null;
}

static void refresh() {
  saveZones();
  eagleDNS.reloadZones();
}

static void saveZones() {
  String acmeChallenge = loadTextFileTrim(userFile("acme-challenge.txt")); // Note: not used anymore, just edit this source
  if (nempty(acmeChallenge))
    zone = jreplace(zone,
      "_acme-challenge.botcompany.de. IN TXT <quoted>",
      "_acme-challenge.botcompany.de. IN TXT " + quote(unnull(acmeChallenge)));
  print(zone);
  saveTextFile(newFile(zonesDir, "botcompany.de"), zone);
  saveTextFile(newFile(zonesDir, "gazelle.rocks"), zone2);
}
static void tryToAcquirePort5000() {
  startThread("Move to port 5000", new Runnable() {  public void run() { try {    
    while (licensed()) { try {
      if (vmPort() == 5000) return;
      if (portIsFree(5000)) {
        print("Trying to move to port 5000...");
        restartVMAndroid();
        print("...went to port: " + vmPort() + ".");
      }
    } catch (Throwable __e) { pcallFail(__e); } sleepSeconds(10); }
  
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "repeat { try {\r\n      if (vmPort() == 5000) return;\r\n      if (portIsFree(500..."; }});
}


static boolean preferCached = false;
static boolean loadSnippet_debug = false;
static ThreadLocal<Boolean> loadSnippet_silent = new ThreadLocal();
static ThreadLocal<Boolean> loadSnippet_publicOnly = new ThreadLocal();
static int loadSnippet_timeout = 30000;



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

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

static  IF1<Long, String> loadSnippet;
static String loadSnippet(long snippetID) { return loadSnippet != null ? loadSnippet.get(snippetID) : loadSnippet_base(snippetID); }
final static String loadSnippet_fallback(IF1<Long, String> _f, long snippetID) { return _f != null ? _f.get(snippetID) : loadSnippet_base(snippetID); }
static String loadSnippet_base(long snippetID) { try {
  return loadSnippet(snippetID, preferCached);
} catch (Exception __e) { throw rethrow(__e); } }

static String loadSnippet(long snippetID, boolean preferCached) throws IOException {
  if (isLocalSnippetID(snippetID))
    return loadLocalSnippet(snippetID);
    
  
  IResourceLoader rl = vm_getResourceLoader();
  if (rl != null)
    return rl.loadSnippet(fsI(snippetID));
  
  
  return loadSnippet_noResourceLoader(snippetID, preferCached);
}

static String loadSnippet_noResourceLoader(long snippetID, boolean preferCached) throws IOException {
  String text;
  
  // boss bot (old concept)
  /*text = getSnippetFromBossBot(snippetID);
  if (text != null) return text;*/
  
  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);
    if (!isTrue(loadSnippet_publicOnly.get()))
      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 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);
}

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

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


static String f2s(File f) {
  return f == null ? null : f.getAbsolutePath();
}

static String f2s(String s) { return f2s(newFile(s)); }


 static String f2s(java.nio.file.Path p) {
  return p == null ? null : f2s(p.toFile());
}



static File saveProgramTextFile(String name, String contents) {
  return saveTextFile(getProgramFile(name), contents);
}

static File saveProgramTextFile(String progID, String name, String contents) {
  return saveTextFile(getProgramFile(progID, name), contents);
}


static volatile StringBuffer local_log = new StringBuffer(); // not redirected




static boolean printAlsoToSystemOut = true;

static volatile Appendable print_log = local_log; // might be redirected, e.g. to main bot

// in bytes - will cut to half that
static volatile int print_log_max = 1024*1024;
static volatile int local_log_max = 100*1024;

static boolean print_silent = false; // total mute if set

static Object print_byThread_lock = new Object();
static volatile ThreadLocal<Object> print_byThread; // special handling by thread - prefers F1<S, Bool>
static volatile Object print_allThreads;
static volatile Object print_preprocess;

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

static <A> A print(String s, A o) {
  print(combinePrintParameters(s, o));
  return o;
}

// slightly overblown signature to return original object...
static <A> A print(A o) {
  ping_okInCleanUp();
  if (print_silent) return o;
  String s = o + "\n";
  print_noNewLine(s);
  return o;
}

static void print_noNewLine(String s) {
  
  try {
    Object f = getThreadLocal(print_byThread_dontCreate());
    if (f == null) f = print_allThreads;
      if (f != null)
        // We do need the general callF machinery here as print_byThread is sometimes shared between modules
        if (isFalse(
          
            f instanceof F1 ? ((F1) f).get(s) :
          
          callF(f, s))) return;
  } catch (Throwable e) {
    System.out.println(getStackTrace(e));
  }
  

  print_raw(s);
}

static 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);
  
  
  if (printAlsoToSystemOut)
    System.out.print(s);
  
  
  vmBus_send("printed", mc(), s);
  
}

static void print_autoRotate() {
  
}


static void pcallFail(Throwable e) {
  pcallPolicyForThread().handlePcallFail(e);
}

static void pcallFail(String msg) {
  pcallFail(new Throwable(msg));
}


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

static <A> A printAndProgramLog(A a) {
  String s = str(a);
  print("[" + localDateWithMilliseconds() + "] " + s);
  logQuotedWithDate(programLog(), s);
  return a;
}


static Android3 bot(String greeting) {
  return makeAndroid3(greeting);
}

static Android3 bot(Android3 a) {
  return makeBot(a);
}

static Android3 bot(String greeting, Object responder) {
  return makeBot(greeting, responder);
}

static Android3 bot() {
  return makeBot();
}


// firstDelay = delay
static FixedRateTimer doEvery_daemon(long delay, final Object r) { return doEvery_daemon(defaultTimerName(), delay, r); }
static FixedRateTimer doEvery_daemon(String timerName, long delay, final Object r) {
  return doEvery_daemon(timerName, delay, delay, r);
}

static FixedRateTimer doEvery_daemon(long delay, long firstDelay, final Object r) { return doEvery_daemon(defaultTimerName(), delay, firstDelay, r); }
static FixedRateTimer doEvery_daemon(String timerName, long delay, long firstDelay, final Object r) {
  FixedRateTimer timer = new FixedRateTimer(true);
  timer.scheduleAtFixedRate(smartTimerTask(r, timer, delay), firstDelay, delay);
  return timer;
}

static FixedRateTimer doEvery_daemon(double delaySeconds, final Object r) {
  return doEvery_daemon(toMS(delaySeconds), r);
}


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

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




static void ownResource(AutoCloseable c) {
  _registerAutoCloseable(c);
}


static StefansOS_ConnectToServer snippetUpdateConnector(Object... __) {
  boolean verbose = boolPar("verbose", __);
  StefansOS_ConnectToServer connector = new StefansOS_ConnectToServer();
  connector.onLine = new VF1<String>() { public void get(String line) { try { 
    Matches m = new Matches();
    if (startsWith(line, "snippetUpdates:", m)) {
      if (verbose) print(line);
      String msg = m.rest();
      vmBus_send("snippetUpdate", safeUnstruct(msg));
    }
   } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "new Matches m;\r\n    if (startsWith(line, \"snippetUpdates:\", m)) {\r\n      if (..."; }};
  connector.startWithSubs("snippetUpdates");
  return connector;
}


static <A> AutoCloseable vmBus_onMessage(String msg, IVF1<A> onMessage) {
  return vmBus_onMessage(msg, ivf1ToVF1(onMessage));
}

static <A> AutoCloseable vmBus_onMessage(final String msg, final VF1<A> onMessage) {
  Map<String, Set> map = vm_busListenersByMessage_live();
  synchronized(map) {
    Set listeners = map.get(msg);
    if (listeners == null) map.put(msg, listeners = syncIdentityHashSet());
    // We're technically violating the one-synchronized-object-per-thread rule,
    // but it should be OK here.
    // TODO: remove empty sets from map
    return tempAdd(listeners, new VF2<String, Object>() { public void get(String _msg, Object arg) { try { 
      callF(onMessage, arg)
    ; } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "callF(onMessage, arg)"; }});
  }
}


static <A, B> AutoCloseable vmBus_onMessage(String msg, final VF2<A, B> onMessage) {
  return vmBus_onMessage(msg, new VF1<Object[]>() { public void get(Object[] o) { try { 
    callF(onMessage, first(o), second(o));
   } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "callF(onMessage, first(o), second(o));"; }});
}


static <A, B> AutoCloseable vmBus_onMessage(String msg, final IVF2<A, B> onMessage) {
  return vmBus_onMessage(msg, new VF1<Object[]>() { public void get(Object[] o) { try { 
    callF(onMessage, first(o), second(o));
   } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "callF(onMessage, first(o), second(o));"; }});
}





static AutoCloseable vmBus_onMessage(String msg, Runnable onMessage) {
  return vmBus_onMessage(msg, runnableToVF1(onMessage));
}


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

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

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


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


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


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

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


static String firstIntAsString(String s) {
  return jextract("<int>", s);
}


static File programLog() {
  return programLogFile();
}

static String programLog(String s) {
  logQuotedWithDate(programLog(), s);
  return s;
}


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


static boolean match(String pat, String s) {
  return match3(pat, s);
}

static boolean match(String pat, String s, Matches matches) {
  return match3(pat, s, matches);
}

static boolean match(String pat, List<String> toks, Matches matches) {
  return match3(pat, toks, matches);
}


static String loadTextFileTrim(String fileName) {
  return loadTextFile_trim(fileName);
}



static String loadTextFileTrim(File f, String defaultContents) {
  return loadTextFile_trim(f, defaultContents);
}



static String loadTextFileTrim(File fileName) {
  return loadTextFile_trim(fileName);
}



static String loadTextFileTrim(String fileName, String defaultContents) {
  return loadTextFile_trim(fileName, defaultContents);
}


static File userFile(String path) {
  return new File(userHome(), path);
}


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

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

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

static boolean nempty(BitSet bs) { return !empty(bs); }

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

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


static boolean nempty(IMultiMap mm) { return mm != null && mm.size() != 0; }



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









static boolean nempty(Rect r) { return r != null && r.w != 0 && r.h != 0; }






static boolean nempty(IntSize l) { return l != null && l.size() != 0; }




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

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

// leaves tok properly tokenized
// returns true iff anything was replaced
static boolean jreplace(List<String> tok, String in, String out) {
  return jreplace(tok, in, out, false, true, null);
}

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

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

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

static 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++) { // TODO: don't need this check anymore
    i = findCodeTokens(tok, i+1, ignoreCase, toks, condition);
    if (i < 0)
      return anyChange;
    List<String> subList = tok.subList(i-1, i+lTokin-1); // N to N
    String expansion = jreplaceExpandRefs(out, subList);
    int end = i+lTokin-2;
    
    clearAllTokens(tok, i, end); // C to C
    tok.set(i, expansion);
    if (reTok) // would this ever be false??
      reTok(tok, i, end);
    i = end;
    anyChange = true;
  }
  throw fail("woot? 10000! " + quote(in) + " => " + quote(out));
}

static boolean jreplace_debug = false;


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

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


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

static <A> Collection<A> unnull(Collection<A> l) {
  return l == null ? emptyList() : l;
}

static <A> List<A> unnull(List<A> l) { return l == null ? emptyList() : l; }
static int[] unnull(int[] l) { return l == null ? emptyIntArray() : l; }
static char[] unnull(char[] l) { return l == null ? emptyCharArray() : l; }
static double[] unnull(double[] l) { return l == null ? emptyDoubleArray() : l; }
static float[] unnull(float[] l) { return l == null ? emptyFloatArray() : l; }

static <A, B> Map<A, B> unnull(Map<A, B> l) {
  return l == null ? emptyMap() : l;
}

static <A> Iterable<A> unnull(Iterable<A> i) {
  return i == null ? emptyList() : i;
}

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

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


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


//ifclass Symbol

static Symbol unnull(Symbol s) {
  return s == null ? emptySymbol() : s;
}
//endif



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


static int unnull(Integer i) { return i == null ? 0 : i; }
static long unnull(Long l) { return l == null ? 0L : l; }
static double unnull(Double l) { return l == null ? 0.0 : l; }


/** writes safely (to temp file, then rename) */
static File saveTextFile(String fileName, String contents) throws IOException {
  /*ifdef CriticalActions
  temp beginCriticalAction("Saving file " + fileName + " (" + l(contents) + " chars)");
  endifdef*/
  
  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()); try {
    OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream, "UTF-8");
    PrintWriter printWriter = new PrintWriter(outputStreamWriter);
    printWriter.print(contents);
    printWriter.close();
  } finally { _close(fileOutputStream); }}
  
  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;
}

static File saveTextFile(File fileName, String contents) { try {
  saveTextFile(fileName.getPath(), contents);
  return fileName;
} catch (Exception __e) { throw rethrow(__e); } }


static File newFile(File base, String... names) {
  for (String name : names) base = new File(base, name);
  return base;
}

static File newFile(String name) {
  return name == null ? null : new File(name);
}

static File newFile(String base, String... names) {
  return newFile(newFile(base), names);
}




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


static Thread startThread(Object runnable) {
  return startThread(defaultThreadName(), runnable);
}

static Thread startThread(String name, Runnable runnable) {
  runnable = wrapAsActivity(runnable);
  return startThread(newThread(runnable, name));
}

static Thread startThread(String name, Object runnable) {
  runnable = wrapAsActivity(runnable);
  return startThread(newThread(toRunnable(runnable), name));
}

static Thread startThread(Thread t) {
  
  _registerThread(t);
  
  t.start();
  return t;
}


static volatile boolean licensed_yes = true;

static boolean licensed() {
  if (!licensed_yes) return false;
  ping_okInCleanUp();
  return true;
}

static void licensed_off() {
  licensed_yes = false;
}


static int vmPort() {
  return myVMPort();
}


static boolean portIsFree(int port) {
  try {
    new ServerSocket(port).close();
    return true;
  } catch (IOException e) {
    return false;
  }
}


static void restartVMAndroid() {
  Object android = getVMAndroid();
  if (android != null)
    call(android, "dispose");
  try {
    call(javax(), "makeVMAndroid");
  } finally {
    ((List) get(javax(), "record_list")).remove(android);
  }
}


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


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

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


static String loadLocalSnippet(String snippetID) {
  return loadLocalSnippet(psI(snippetID));
}

static String loadLocalSnippet(long snippetID) {
  return loadTextFile(localSnippetFile(snippetID));
}


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


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

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


static String md5(String text) { try {
  if (text == null) return "-";
  return bytesToHex(md5AsByteArray(toUtf8(text))); // maybe different than the way PHP does it...
} catch (Exception __e) { throw rethrow(__e); } }

static String md5(byte[] data) {
  if (data == null) return "-";
  return bytesToHex(md5AsByteArray(data));
}

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


static String tb_mainServer_default = "https://code.botcompany.de:9898";
static Object tb_mainServer_override; // func -> S

static String tb_mainServer() {
  if (tb_mainServer_override != null) return (String) callF(tb_mainServer_override);
  return trim(loadTextFile(tb_mainServer_file(),
    tb_mainServer_default));
}

static File tb_mainServer_file() {
  return getProgramFile("#1001638", "mainserver.txt");
}

static boolean tb_mainServer_isDefault() {
  return eq(tb_mainServer(), tb_mainServer_default);
}


static boolean isTrue(Object o) {
  if (o instanceof Boolean)
    return ((Boolean) o).booleanValue();
  if (o == null) return false;
  if (o instanceof ThreadLocal) // TODO: remove this
    return isTrue(((ThreadLocal) o).get());
  throw fail(getClassName(o));
}

static boolean isTrue(Boolean b) {
  return b != null && b.booleanValue();
}


static String standardCredentials() {
  String user = standardCredentialsUser();
  String pass = standardCredentialsPass();
  if (nempty(user) && nempty(pass))
    return "&_user=" + urlencode(user) + "&_pass=" + urlencode(pass);
  return "";
}


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


// a little kludge for stuff like eq(symbol, "$X")
static boolean eq(Symbol a, String b) {
  return eq(str(a), b);
}



static String loadTextFile(String fileName) {
  return loadTextFile(fileName, null);
}

static String loadTextFile(File f, String defaultContents) { return loadTextFile(f, defaultContents, "UTF-8"); }
static String loadTextFile(File f, String defaultContents, String encoding) { try {
  
  checkFileNotTooBigToRead(f);
  
  if (f == null || !f.exists()) return defaultContents;

  FileInputStream fileInputStream = new FileInputStream(f);
  InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, encoding);
  return loadTextFile(inputStreamReader);
} catch (Exception __e) { throw rethrow(__e); } }

public static String loadTextFile(File fileName) {
  return loadTextFile(fileName, null);
}

static String loadTextFile(String fileName, String defaultContents) {
  return fileName == null ? defaultContents : loadTextFile(newFile(fileName), defaultContents);
}

static 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 File getGlobalCache() {
  File file = new File(javaxCachesDir(), "Binary Snippets");
  file.mkdirs();
  return file;
}



static <A> A setThreadLocal(ThreadLocal<A> tl, A value) {
  if (tl == null) return null;
  A old = tl.get();
  tl.set(value);
  return old;
}


static int loadPage_defaultTimeout = 60000;
static ThreadLocal<String> loadPage_charset = new ThreadLocal();
static boolean loadPage_allowGzip = true, loadPage_debug;
static boolean loadPage_anonymous = false; // don't send computer ID
static int loadPage_verboseness = 100000;
static int loadPage_retries = 1; //60; // seconds
static ThreadLocal<Boolean> loadPage_silent = new ThreadLocal();
static volatile int loadPage_forcedTimeout; // ms
static ThreadLocal<Integer> loadPage_forcedTimeout_byThread = new ThreadLocal(); // ms
static ThreadLocal<Map<String, List<String>>> loadPage_responseHeaders = new ThreadLocal();
static ThreadLocal<Map<String, String>> loadPage_extraHeaders = new ThreadLocal();
static ThreadLocal<Long> loadPage_sizeLimit = new ThreadLocal();

public static String loadPageSilently(String url) { try {
  return loadPageSilently(new URL(loadPage_preprocess(url)));
} catch (Exception __e) { throw rethrow(__e); } }

public static String loadPageSilently(URL url) { try {
  if (!networkAllowanceTest(str(url))) throw fail("Not allowed: " + url);
    
  IOException e = null;
  for (int tries = 0; tries < loadPage_retries; tries++)
    try {
      URLConnection con = loadPage_openConnection(url);
      return loadPage(con, url);
    } catch (IOException _e) {
      e = _e;
      if (loadPage_debug)
        print(exceptionToStringShort(e));
      if (tries < loadPage_retries-1) sleepSeconds(1);
    }
  throw e;
} catch (Exception __e) { throw rethrow(__e); } }

static String loadPage_preprocess(String url) {  
  if (url.startsWith("tb/")) // don't think we use this anymore
    url = tb_mainServer() + "/" + url;
  if (url.indexOf("://") < 0)
    url = "http://" + url;
  return url;
}

static 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 String loadPage(URL url) {
  return loadPage(url.toExternalForm());
}

static String loadPage(URLConnection con, URL url) throws IOException {
  return loadPage(con, url, true);
}

static String loadPage(URLConnection con, URL url, boolean addHeaders) { try {
  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) {} // fails if within doPost
  
  return loadPage(con);
} catch (Exception __e) { throw rethrow(__e); } }

// just download as string, no shenanigans or extra headers or ANYTHING
static String loadPage(URLConnection con) { try {
  Long limit = optPar(loadPage_sizeLimit);
  URL url = con.getURL();
  
  
  vm_generalSubMap("URLConnection per thread").put(currentThread(), con);
  
  loadPage_responseHeaders.set(con.getHeaderFields());
  InputStream in = null;
  try {
    in = urlConnection_getInputStream(con);
  //vm_generalSubMap("InputStream per thread").put(currentThread(), in);
  if (loadPage_debug)
    print("Put stream in map: " + currentThread());
    String contentType = con.getContentType();
    if (contentType == null) {
      //printStruct("Headers: ", con.getHeaderFields());
      throw new IOException("Page could not be read: " + hideCredentials(url));
    }
    //print("Content-Type: " + contentType);
    String charset = loadPage_charset == null ? null : loadPage_charset.get();
    if (charset == null) charset = loadPage_guessCharset(contentType);
    
    if ("gzip".equals(con.getContentEncoding())) {
      if (loadPage_debug)
        print("loadPage: Using gzip.");
      in = newGZIPInputStream(in);
    }
    Reader r;
    try {
      r = new InputStreamReader(in, unquote(charset));
    } catch (UnsupportedEncodingException e) {
      print(toHex(utf8(charset)));
      throw e;
    }
    
    boolean silent = isTrue(loadPage_silent.get());
    StringBuilder buf = new StringBuilder();
    int n = 0;
    while (limit == null || n < limit) {
      ping();
      int ch = r.read();
      if (ch < 0)
        break;
      buf.append((char) ch);
      ++n;
      if (!silent && (n % loadPage_verboseness) == 0)
        print("  " + n + " chars read");
    }
    return buf.toString();
  } finally {
    if (loadPage_debug)
      print("loadPage done");
    //vm_generalSubMap("InputStream per thread").remove(currentThread());
    
    vm_generalSubMap("URLConnection per thread").remove(currentThread());
    
    if (in != null) in.close();
  }
} catch (Exception __e) { throw rethrow(__e); } }

static 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);
  /* If Content-Type doesn't match this pre-conception, choose default and hope for the best. */
  //return or(match, "ISO-8859-1");
  return or(match, "UTF-8");
}

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

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


static File getProgramFile(String progID, String fileName) {
  if (new File(fileName).isAbsolute())
    return new File(fileName);
  return new File(getProgramDir(progID), fileName);
}

static File getProgramFile(String fileName) {
  return getProgramFile(getProgramID(), fileName);
}



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


static void ping_okInCleanUp() {


  if (ping_pauseAll || ping_anyActions)
    ping_impl(true);


}


// this syntax should be removed...
static Object getThreadLocal(Object o, String name) {
  ThreadLocal t =  (ThreadLocal) (getOpt(o, name));
  return t != null ? t.get() : null;
}

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

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


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


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



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



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



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



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



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


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




  static <A, B, C> C callF(IF2<A, B, C> f, A a, B b) {
    return f == null ? null : f.get(a, b);
  }



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


static <A> void callF(A a, IVF1<A> f) {
  if (f != null) f.get(a);
}

static <A> void callF(IVF1<A> f, A a) {
  if (f != null) f.get(a);
}


static Object callF(Runnable r) { { if (r != null) r.run(); } return null; }


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

static Object safeCallF(Object f, Object... 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) {
    
    
    if (f instanceof String)
      throw fail("Legacy call: " + f);
    
    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));
}

// used internally
static 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 String getStackTrace(Throwable throwable) {
  lastException(throwable);
  return getStackTrace_noRecord(throwable);
}

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

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

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


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

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


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


static PCallPolicy pcallPolicyForThread() {
  var policy = pcallPolicyForThread_tl().get();
  if (policy != null) return policy;
  return defaultPCallPolicy();
}


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


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

static String str(char[] c) {
  return c == null ? "null" : new String(c);
}

static String str(char[] c, int offset, int count) {
  return new String(c, offset, count);
}




static String localDateWithMilliseconds(Date time) {
  return localDateWithMilliseconds(time.getTime());
}

static String localDateWithMilliseconds(long time) {
  SimpleDateFormat format = simpleDateFormat_local("yyyy/MM/dd HH:mm:ss''SSSS");
  return format.format(time);
}

static String localDateWithMilliseconds() {
  return localDateWithMilliseconds(now());
}


static void logQuotedWithDate(String s) {
  logQuotedWithTime(s);
}

static void logQuotedWithDate(String logFile, String s) {
  logQuotedWithTime(logFile, s);
}

static void logQuotedWithDate(File logFile, String s) {
  logQuotedWithTime(logFile, s);
}


// An "Android" is a program that accepts text questions (on console or TCP) and outputs one response text per question

//please include function myJavaSource. // for getting my known commands

static boolean makeAndroid3_disable = false; // disable all android making

static class Android3 implements AutoCloseable {
  String greeting;
  boolean publicOverride = false; // optionally set this in client
  int startPort = 5000; // optionally set this in client
  IResponder responder;
  boolean console = true;
  boolean quiet = false; // no messages on console
  boolean daemon = false;
  boolean incomingSilent = false;
  int incomingPrintLimit = 200;
  boolean useMultiPort = true;
  boolean recordHistory = false;
  boolean verbose = false;
  int answerPrintLimit = 500;
  boolean newLineAboveAnswer, newLineBelowAnswer;
  
  // set by system
  int port;
  long vport;
  IDialogHandler handler;
  ServerSocket server;
  
  Android3(String greeting) {
  this.greeting = greeting;}
  Android3() {}
  
  public void close() { dispose(); }
  
  synchronized 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) { pcallFail(__e); }}
  }
  
  public String toString() {
    return "Bot: " + greeting + " [port " + port + (vport == 0 ? "" : ", vport " + vport) + "]";
  }
}

static abstract class Responder implements IResponder {}

interface IResponder {
  String answer(String s, List<String> history);
}

static Android3 makeAndroid3(final String greeting) {
  return makeAndroid3(new Android3(greeting));
}

static Android3 makeAndroid3(final String greeting, Responder responder) {
  Android3 android = new Android3(greeting);
  android.responder = responder;
  return makeAndroid3(android);
}

static 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 void makeAndroid3_handleConsole(final Android3 a) {
  // Console handling stuff
  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;
      /*if (eq(line, "bye")) {
        print("> bye stranger");
        history = new ArrayList<S>();
      } else*/ {
        history.add(line);
        history.add(makeAndroid3_getAnswer(line, history, a)); // prints answer on console too
      }
    }
  
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "List<String> history = new ArrayList();\r\n    while (licensed()) {\r\n      Stri..."; }}); }
}

static 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);
        //appendToLog(logFile, s);
      }
    }
  }};
}

static 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 String makeAndroid3_fallback(String s, List<String> history, String answer) {
  // Now we only do the safe thing instead of VM inspection - give out our process ID
  if (answer == null && match3("what is your pid", s))
    return getPID();
    
  if (answer == null && match3("what is your program id", s)) // should be fairly safe, right?
    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 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 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 ThreadLocal<DialogIO> makeAndroid3_io = new ThreadLocal();

static Android3 makeAndroid3() {
  return makeAndroid3(getProgramTitle() + ".");
}


static int makeBot(String greeting) {
  return makeAndroid3(greeting).port;
}

static Android3 makeBot(Android3 a) {
  makeAndroid3(a);
  return a;
}

static Android3 makeBot(String greeting, Object responder) {
  Android3 a = new Android3(greeting);
  a.responder = makeResponder(responder);
  makeBot(a);
  return a;
}

static Android3 makeBot() {
  return makeAndroid3(defaultBotName());
}


static String defaultTimerName_name;

static String defaultTimerName() {
  if (defaultTimerName_name == null)
    defaultTimerName_name = "A timer by " + programID();
  return defaultTimerName_name;
}


// r may return false to cancel timer
static TimerTask smartTimerTask(Object r, java.util.Timer timer, long delay) {
  return new SmartTimerTask(r, timer, delay, _threadInfo());
}

static class SmartTimerTask extends TimerTask implements IFieldsToList{
  Object r;
  java.util.Timer timer;
  long delay;
  Object threadInfo;
  SmartTimerTask() {}
  SmartTimerTask(Object r, java.util.Timer timer, long delay, Object threadInfo) {
  this.threadInfo = threadInfo;
  this.delay = delay;
  this.timer = timer;
  this.r = r;}
  public String toString() { return shortClassName_dropNumberPrefix(this) + "(" + r + ", " + timer + ", " + delay + ", " + threadInfo + ")"; }public Object[] _fieldsToList() { return new Object[] {r, timer, delay, threadInfo}; }

  long lastRun;
  
  public void run() {
    if (!licensed())
      timer.cancel();
    else {
      _threadInheritInfo(threadInfo);
       AutoCloseable __1 = tempActivity(r); try {
      lastRun = fixTimestamp(lastRun);
      long now = now();
      if (now >= lastRun + delay*0.9) {
        lastRun = now;
        if (eq(false, pcallF(r)))
          timer.cancel();
      }
    } finally { _close(__1); }}
  }
}


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

static long toMS(Duration d) {
  return d == null ? 0 : d.toMillis();
}


static void _handleError(Error e) {
  //call(javax(), '_handleError, e);
}


static Set<AutoCloseable> _registerAutoCloseable_set = synchroHashSet();

static void _registerAutoCloseable(AutoCloseable c) {
  addIfNotNull(_registerAutoCloseable_set, c);
}

static void cleanMeUp__registerAutoCloseable() {
  closeAutoCloseables(getAndClearList(_registerAutoCloseable_set));
}


static boolean boolPar(ThreadLocal<Boolean> tl) {
  return boolOptParam(tl);
}



// defaults to false
static boolean boolPar(Object[] __, String name) {
  return boolOptParam(__, name);
}

static boolean boolPar(String name, Object[] __) {
  return boolOptParam(__, name);
}

static boolean boolPar(String name, Map __) {
  return boolOptParam(name, __);
}

static boolean boolPar(String name, Object[] params, boolean defaultValue) {
  return optParam(params, name, defaultValue);
}



static boolean startsWith(String a, String b) {
  return a != null && a.startsWith(unnull(b));
}

static boolean startsWith(String a, char c) {
  return nemptyString(a) && a.charAt(0) == c;
}


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


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


static <A> VF1<A> ivf1ToVF1(IVF1<A> f) {
  return f == null ? null : new VF1<A>() { public void get(A a) { try {  f.get(a) ; } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "f.get(a)"; }};
}


static Map<String, Set> vm_busListenersByMessage_live_cache;
static 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 Map<String, Set> vm_busListenersByMessage_live_load() {
  return vm_generalHashMap("busListenersByMessage");
}


static <A> Set<A> syncIdentityHashSet() {
  return (Set) synchronizedSet(identityHashSet());
}


static <A> AutoCloseable tempAdd(Collection<A> l, A a) {
  if (l == null || l.contains(a)) return null;
  l.add(a);
  return new tempAdd_undo(l, a);
}

static class tempAdd_undo<A> implements AutoCloseable , IFieldsToList{
  Collection<A> l;
  A a;
  tempAdd_undo() {}
  tempAdd_undo(Collection<A> l, A a) {
  this.a = a;
  this.l = l;}
  public String toString() { return shortClassName_dropNumberPrefix(this) + "(" + l + ", " + a + ")"; }public Object[] _fieldsToList() { return new Object[] {l, a}; }

  public void close() { try { l.remove(a); } catch (Exception __e) { throw rethrow(__e); } }
}

static AutoCloseable tempAdd(Container a, Component b) {
  if (a == null || b == null) return null;
  { return swing(() -> { 
    if (b.getParent() == a) return null;
    a.add(b);
    return () -> { swing(() -> { 
      if (b.getParent() == a)
        removeFromParent(b);
    }); };
  }); }
}



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


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

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

static <A, B> Pair<A, B> first(Map<A, B> map) {
  return mapEntryToPair(first(entrySet(map)));
}

static <A, B> Pair<A, B> first(MultiMap<A, B> mm) {
  if (mm == null) return null;
  var e = first(mm.data.entrySet());
  if (e == null) return null;
  return pair(e.getKey(), first(e.getValue()));
}


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


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

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

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


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




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





static <A> A first(A[] l, IF1<A, Boolean> pred) {
  return firstThat(l, pred);
}

static <A> A first(Iterable<A> l, IF1<A, Boolean> pred) {
  return firstThat(l, pred);
}

static <A> A first(IF1<A, Boolean> pred, Iterable<A> l) {
  return firstThat(pred, l);
}


static <A> A first(AppendableChain<A> a) {
  return a == null ? null : a.element;
}





static <A> A second(List<A> l) {
  return get(l, 1);
}

static <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 <A> A second(A[] bla) {
  return bla == null || bla.length <= 1 ? null : bla[1];
}


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





static <A> A second(Producer<A> p) {
  if (p == null) return null;
  if (p.next() == null) return null;
  return p.next();
}


static char second(String s) {
  return charAt(s, 1);
}




static <A> A third(List<A> l) {
  return _get(l, 2);
}

static <A> A third(Iterable<A> l) {
  if (l == null) return null;
  Iterator<A> it = iterator(l);
  for (int _repeat_0 = 0; _repeat_0 < 2; _repeat_0++)  {
    if (!it.hasNext()) return null;
    it.next();
  }
  return it.hasNext() ? it.next() : null;
}


static <A> A third(Producer<A> p) {
  if (p == null) return null;
  for (int _repeat_1 = 0; _repeat_1 < 2; _repeat_1++)  {
    if (p.next() == null) return null;
  }
  return p.next();
}


static <A> A third(A[] bla) {
  return bla == null || bla.length <= 2 ? null : bla[2];
}




static <A> A last(List<A> l) {
  return empty(l) ? null : l.get(l.size()-1);
}

static char last(String s) {
  return empty(s) ? '#' : s.charAt(l(s)-1);
}

static byte last(byte[] a) {
  return l(a) != 0 ? a[l(a)-1] : 0;
}


  static int last(int[] a) {
    return l(a) != 0 ? a[l(a)-1] : 0;
  }


  static long last(long[] a) {
    return l(a) != 0 ? a[l(a)-1] : 0;
  }



static double last(double[] a) {
  return l(a) != 0 ? a[l(a)-1] : 0;
}

static <A> A last(A[] a) {
  return l(a) != 0 ? a[l(a)-1] : null;
}

static <A> A last(Iterator<A> it) {
  A a = null;
  while  (it.hasNext()) { ping(); a = it.next(); }
  return a;
}

static <A> A last(Collection<A> l) {
  if (l == null) return null;
  if (l instanceof List) return (A) last((List) l);
  if (l instanceof SortedSet) return (A) last((SortedSet) l);
  Iterator<A> it = iterator(l);
  A a = null;
  while  (it.hasNext()) { ping(); a = it.next(); }
  return a;
}

static <A> A last(SortedSet<A> l) {
  return l == null ? null : l.last();
}


static <A> A last(ReverseChain<A> l) {
  return l == null ? null : l.element;
}



















static <A> A last(CompactLinkedHashSet<A> set) {
  return set == null ? null : set.last();
}



static <A> VF1<A> runnableToVF1(final Runnable r) {
  return r == null ? null : new VF1<A>() { public void get(A a) { try {  r.run() ; } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "r.run()"; }};
}


// get purpose 1: access a list/array/map (safer version of x.get(y))

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

// seems to conflict with other signatures
/*static <A, B> B get(Map<A, B> map, A key) {
  ret map != null ? map.get(key) : null;
}*/

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

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

// get purpose 2: access a field by reflection or a map

static 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 getOptDynOnly(((DynamicObject) o), field);
    
  } catch (Exception e) {
    throw asRuntimeException(e);
  }
  throw new RuntimeException("Field '" + field + "' not found in " + o.getClass().getName());
}

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

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

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


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

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

static 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); } }

// access of static fields is not yet optimized
static 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 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 RuntimeException fail() { throw new RuntimeException("fail"); }
static RuntimeException fail(Throwable e) { throw asRuntimeException(e); }
static RuntimeException fail(Object msg) { throw new RuntimeException(String.valueOf(msg)); }


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


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



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


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


static String substring(String s, int x) {
  return substring(s, x, strL(s));
}

static String substring(String s, int x, int y) {
  if (s == null) return null;
  if (x < 0) x = 0;
  int n = s.length();
  if (y < x) y = x;
  if (y > n) y = n;
  if (x >= y) return "";
  return s.substring(x, y);
}



// convenience method for quickly dropping a prefix
static String substring(String s, CharSequence l) {
  return substring(s, lCharSequence(l));
}


static int l(Object[] a) { return a == null ? 0 : a.length; }
static int l(boolean[] a) { return a == null ? 0 : a.length; }
static int l(byte[] a) { return a == null ? 0 : a.length; }
static int l(short[] a) { return a == null ? 0 : a.length; }
static int l(long[] a) { return a == null ? 0 : a.length; }
static int l(int[] a) { return a == null ? 0 : a.length; }
static int l(float[] a) { return a == null ? 0 : a.length; }
static int l(double[] a) { return a == null ? 0 : a.length; }
static int l(char[] a) { return a == null ? 0 : a.length; }
static int l(Collection c) { return c == null ? 0 : c.size(); }

static int l(Iterator i) { return iteratorCount_int_close(i); } // consumes the iterator && closes it if possible

static int l(Map m) { return m == null ? 0 : m.size(); }
static int l(CharSequence s) { return s == null ? 0 : s.length(); }
static long l(File f) { return f == null ? 0 : f.length(); }






  static int l(IMultiMap mm) { return mm == null ? 0 : mm.size(); }



















  static int l(IntSize o) { return o == null ? 0 : o.size(); }




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



static String programID;
static String getProgramID() {
  return nempty(programID) ? formatSnippetIDOpt(programID) : "?";
}


// TODO: ask JavaX instead
static String getProgramID(Class c) {
  String id = (String) getOpt(c, "programID");
  if (nempty(id))
    return formatSnippetID(id);
  return "?";
}


static String getProgramID(Object o) {
  return getProgramID(getMainClass(o));
}


// returns from C to C
static String jextract(String pat, String s) {
  return jextract(pat, javaTok(s));
}

static 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 File programLogFile() {
  return programFile(defaultProgramLogFileName());
}

static File programLogFile(String programID) {
  return programFile(programID, defaultProgramLogFileName());
}


static Class __javax;

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

static void __setJavaX(Class j) {
  __javax = j;
  _onJavaXSet();
}


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

// varargs assignment fixer for a single string array argument
static Object call(Object o, String method, String[] arg) {
  return call(o, method, new Object[] {arg});
}

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


static boolean match3(String pat, String s) {
  return match3(pat, s, null);
}

static boolean match3(String pat, String s, Matches matches) {
  if (pat == null || s == null) return false;
  return match3(pat, parse3_cachedInput(s), matches);
}
  
static boolean match3(String pat, List<String> toks, Matches matches) {
  List<String> tokpat = parse3_cachedPattern(pat);
  return match3(tokpat, toks, matches);
}

static boolean match3(List<String> tokpat, List<String> toks, Matches matches) {
  String[] m = match2(tokpat, toks);
  //print(structure(tokpat) + " on " + structure(toks) + " => " + structure(m));
  if (m == null) return false;
  if (matches != null) matches.m = m; return true;
}


static String loadTextFile_trim(String fileName) {
  return trim(loadTextFile(fileName));
}

static String loadTextFile_trim(File f, String defaultContents) {
  return trim(loadTextFile(f, defaultContents));
}

static String loadTextFile_trim(File fileName) {
  return trim(loadTextFile(fileName));
}

static String loadTextFile_trim(String fileName, String defaultContents) {
  return trim(loadTextFile(fileName, defaultContents));
}


static String _userHome;
static String userHome() {
  if (_userHome == null)
    return actualUserHome();
  return _userHome;
}

static File userHome(String path) {
  return new File(userDir(), path);
}


static boolean empty(Collection c) { return c == null || c.isEmpty(); }
static boolean empty(Iterable c) { return c == null || !c.iterator().hasNext(); }
static boolean empty(CharSequence s) { return s == null || s.length() == 0; }
static boolean empty(Map map) { return map == null || map.isEmpty(); }
static boolean empty(Object[] o) { return o == null || o.length == 0; }
static boolean empty(BitSet bs) { return bs == null || bs.isEmpty(); }


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

static boolean empty(double[] a) { return a == null || a.length == 0; }
static boolean empty(float[] a) { return a == null || a.length == 0; }
static boolean empty(int[] a) { return a == null || a.length == 0; }
static boolean empty(long[] a) { return a == null || a.length == 0; }
static boolean empty(byte[] a) { return a == null || a.length == 0; }
static boolean empty(short[] a) { return a == null || a.length == 0; }




static boolean empty(IMultiMap mm) { return mm == null || mm.size() == 0; }


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






















static boolean empty(Rect r) { return !(r != null && r.w != 0 && r.h != 0); }



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



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


static boolean empty(IntSize l) { return l == null || l.size() == 0; }


// TODO: extended multi-line strings

static int javaTok_n, javaTok_elements;
static boolean javaTok_opt = false;

static List<String> javaTok(String s) {
  ++javaTok_n;
  ArrayList<String> tok = new ArrayList();
  int l = s == null ? 0 : s.length();
  
  int i = 0;
  while (i < l) {
    int j = i;
    char c, d;
    
        // scan for whitespace
        while (j < l) {
          c = s.charAt(j);
          d = j+1 >= l ? '\0' : s.charAt(j+1);
          if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
            ++j;
          else if (c == '/' && d == '*') {
            do ++j; while (j < l && !regionMatches(s, j, "*/"));
            j = Math.min(j+2, l);
          } else if (c == '/' && d == '/') {
            do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
          } else
            break;
        }
        
        tok.add(javaTok_substringN(s, i, j));
        i = j;
        if (i >= l) break;
        c = s.charAt(i);
        d = i+1 >= l ? '\0' : s.charAt(i+1);
    
        // scan for non-whitespace
        
        // Special JavaX syntax: 'identifier
        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 == '\'') { // allow multi-line strings, but not for '
              ++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) == '\'')); // for stuff like "don't"
        else if (Character.isDigit(c)) {
          do ++j; while (j < l && Character.isDigit(s.charAt(j)));
          if (j < l && s.charAt(j) == 'L') ++j; // Long constants like 1L
        } else if (c == '[' && d == '[') {
          do ++j; while (j < l && !regionMatches(s, j, "]]"));
          j = Math.min(j+2, l);
        } else if (c == '[' && d == '=' && i+2 < l && s.charAt(i+2) == '[') {
          do ++j; while (j+2 < l && !regionMatches(s, j, "]=]"));
          j = Math.min(j+3, l);
        } else
          ++j;
      
    tok.add(javaTok_substringC(s, i, j));
    i = j;
  }
  
  if ((tok.size() % 2) == 0) tok.add("");
  javaTok_elements += tok.size();
  return tok;
}

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


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

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

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

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

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

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


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







  static Map<String, String[]> javaTokForJFind_array_cache = synchronizedMRUCache(1000);


static 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 int findCodeTokens(List<String> tok, String... tokens) {
  return findCodeTokens(tok, 1, false, tokens);
}

static int findCodeTokens(List<String> tok, boolean ignoreCase, String... tokens) {
  return findCodeTokens(tok, 1, ignoreCase, tokens);
}

static int findCodeTokens(List<String> tok, int startIdx, boolean ignoreCase, String... tokens) {
  return findCodeTokens(tok, startIdx, ignoreCase, tokens, null);
}

static HashSet<String> findCodeTokens_specials = lithashset("*", "<quoted>", "<id>", "<int>", "\\*");
static int findCodeTokens_bails, findCodeTokens_nonbails;

static interface findCodeTokens_Matcher {
  boolean get(String token);
}

static 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;

  findCodeTokens_Matcher[] matchers = new findCodeTokens_Matcher[nTokens];
  IContentsIndexedList2 indexedList = tok instanceof IContentsIndexedList2 ? (IContentsIndexedList2) tok : null;
  
  
  TreeSet<HasIndex> indices = null;
  int indicesOfs = 0;

  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);
      if (indexedList != null) {
        TreeSet<HasIndex> indices2 = indexedList.indicesOf_treeSetOfHasIndex(p);
        
        if (indices2 == null) return -1;
        if (indices == null || indices2.size() < indices.size()) {
          // found shorter list
          indices = indices2;
          indicesOfs = j;
        }
      }
    }
    matchers[j] = matcher;
  }
  
  // go over shortest index
  if (indices != null) {
    int min = i+indicesOfs*2;
    SortedSet<HasIndex> tailSet = min == 1 ? indices : indices.tailSet(new HasIndex(min));
    
    outer: for (HasIndex h : tailSet) {
      int idx = h.idx-indicesOfs*2;
      if (idx >= end) break;
      
      for (int j = 0; j < nTokens; j++) try {
        if (!matchers[j].get(tok.get(idx+j*2)))
          continue outer;
      } catch (IndexOutOfBoundsException e) {
        print("fct indicesOfs=" + indicesOfs + ", h=" + h + ", idx=" + idx);
        throw e;
      }

      if (condition == null || checkTokCondition(condition, tok, idx-1))
        return idx;
    }
    return -1;
  }
 
  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)) // pass N index
      return i;
  }
  return -1;
}


// "$1" is first code token, "$2" second code token etc.
static String jreplaceExpandRefs(String s, List<String> tokref) {
  if (!contains(s, '$')) return s;
  List<String> tok = javaTok(s);
  for (int i = 1; i < l(tok); i += 2) {
    String t = tok.get(i);
    if (t.startsWith("$") && isInteger(t.substring(1))) {
      String x = tokref.get(-1+parseInt(t.substring(1))*2);
      tok.set(i, x);
    } else if (t.equals("\\")) {
      tok.set(i, "");
      i += 2;
    }
  }
  return join(tok);
}



  static void clearAllTokens(List<String> tok) {
    for (int i = 0; i < tok.size(); i++)
      tok.set(i, "");
  }
  
  static void clearAllTokens(List<String> tok, int i, int j) {
    for (; i < j; i++)
      tok.set(i, "");
  }


static List<String> reTok(List<String> tok) {
  replaceCollection(tok, javaTok(tok));
  return tok;
}

static List<String> reTok(List<String> tok, int i) {
  return reTok(tok, i, i+1);
}

static List<String> reTok(List<String> tok, int i, int j) {
  // extend i to an "N" token
  // and j to "C" (so j-1 is an "N" token)
  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);
  
  // fallback to safety
  // reTok(tok);
  
  return tok;
}




static ArrayList emptyList() {
  return new ArrayList();
  //ret Collections.emptyList();
}

static ArrayList emptyList(int capacity) {
  return new ArrayList(max(0, capacity));
}

// Try to match capacity
static ArrayList emptyList(Iterable l) {
  return l instanceof Collection ? emptyList(((Collection) l).size()) : emptyList();
}

static ArrayList emptyList(Object[] l) {
  return emptyList(l(l));
}

// get correct type at once
static <A> ArrayList<A> emptyList(Class<A> c) {
  return new ArrayList();
}


static int[] emptyIntArray_a = new int[0];
static int[] emptyIntArray() { return emptyIntArray_a; }


static char[] emptyCharArray = new char[0];
static char[] emptyCharArray() { return emptyCharArray; }


static double[] emptyDoubleArray = new double[0];
static double[] emptyDoubleArray() { return emptyDoubleArray; }


static float[] emptyFloatArray = new float[0];
static float[] emptyFloatArray() { return emptyFloatArray; }


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


static Object[] emptyObjectArray_a = new Object[0];
static Object[] emptyObjectArray() { return emptyObjectArray_a; }


static Symbol emptySymbol_value;

static Symbol emptySymbol() {
  if (emptySymbol_value == null) emptySymbol_value = symbol("");
  return emptySymbol_value;
}


public static File mkdirsForFile(File file) {
  File dir = file.getParentFile();
  if (dir != null) { // is null if file is in current dir
    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 long now_virtualTime;
static long now() {
  return now_virtualTime != 0 ? now_virtualTime : System.currentTimeMillis();
}



static 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 <A extends Throwable> A printStackTrace(A e) {
  // we go to system.out now - system.err is nonsense
  if (e != null) print(getStackTrace(e));
  return e;
}

static void printStackTrace() {
  printStackTrace(new Throwable());
}

static void printStackTrace(String msg) {
  printStackTrace(new Throwable(msg));
}

static void printStackTrace(String msg, Throwable e) {
  printStackTrace(new Throwable(msg, e));
}


static FileOutputStream newFileOutputStream(File path) throws IOException {
  return newFileOutputStream(path.getPath());
}

static FileOutputStream newFileOutputStream(String path) throws IOException {
  return newFileOutputStream(path, false);
}

static FileOutputStream newFileOutputStream(File path, boolean append) throws IOException {
  return newFileOutputStream(path.getPath(), append);
}

static FileOutputStream newFileOutputStream(String path, boolean append) throws IOException {
  mkdirsForFile(path);
  FileOutputStream f = new FileOutputStream(path, append);
  
  _registerIO(f, path, true);
  
  return f;
}


static void _close(AutoCloseable c) {
  if (c != null) try {
    c.close();
  } catch (Throwable e) {
    // Some classes stupidly throw an exception on double-closing
    if (c instanceof javax.imageio.stream.ImageOutputStream)
      return;
    else throw rethrow(e);
  }
}




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


// f can return false to suppress regular printing
// call print_raw within f to actually print something
static AutoCloseable tempInterceptPrint(F1<String, Boolean> f) {
  return tempSetThreadLocal(print_byThread(), f);
}


static String defaultThreadName_name;

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


static Runnable wrapAsActivity(Object r) {
  if (r == null) return null;
  Runnable r2 = toRunnable(r);


  Object mod = dm_current_generic();
  if (mod == null) return r2;
  return new Runnable() {  public void run() { try { 
    AutoCloseable c =  (AutoCloseable) (rcall("enter", mod));
     AutoCloseable __1 = c; try {
    r2.run();
  
} finally { _close(__1); }} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "AutoCloseable c =  (AutoCloseable) (rcall enter(mod));\r\n    temp c;\r\n    r2.r..."; }};

}


// runnable = Runnable or String (method name)
static Thread newThread(Object runnable) {
  return new BetterThread(_topLevelErrorHandling(toRunnable(runnable)));
}

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

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


static Runnable toRunnable(final Object o) {
  if (o == null) return null;
  if (o instanceof Runnable) return (Runnable) o;
  
  if (o instanceof String) throw fail("callF_legacy");
  
  return new Runnable() {  public void run() { try {  callF(o) ;
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "callF(o)"; }};
}


static Map<Thread, Boolean> _registerThread_threads;
static Object _onRegisterThread; // voidfunc(Thread)

static 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 void _registerThread() {
  _registerThread(Thread.currentThread());
}


static int myVMPort() {
  List records =  (List) (get(getJavaX(), "record_list"));
  Object android = last(records);
  return or0((Integer) get(android, "port"));
}


static Object getVMAndroid() {
  return last((List) get(getJavaX(), "record_list"));
}


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


static volatile boolean sleep_noSleep = false;

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

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


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

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


static Complex round(Complex c) {
  return new Complex(round(c.re), round(c.im));
}



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


static File localSnippetFile(long snippetID) {
  return localSnippetsDir(snippetID + ".text");
}

static File localSnippetFile(String snippetID) {
  return localSnippetFile(parseSnippetID(snippetID));
}


static <A> A proxy(Class<A> intrface, final Object target) {
  if (target == null) return null;
  if (isInstance(intrface, target)) return (A) target;
  return (A) java.lang.reflect.Proxy.newProxyInstance(intrface.getClassLoader(),
    new Class[] { intrface },
    new proxy_InvocationHandler(target));
}

static <A> A proxy(Object target, Class<A> intrface) {
  return proxy(intrface, target);
}


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


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

static String formatSnippetID(long id) {
  return "#" + 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 byte[] md5AsByteArray(byte[] data) { try {
  return MessageDigest.getInstance("MD5").digest(data);
} catch (Exception __e) { throw rethrow(__e); } }


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


static boolean md5OfFile_verbose = false;

static String md5OfFile(String path) {
  return md5OfFile(newFile(path));
}

static 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 String trim(String s) { return s == null ? null : s.trim(); }
static String trim(StringBuilder buf) { return buf.toString().trim(); }
static String trim(StringBuffer buf) { return buf.toString().trim(); }


static String standardCredentialsUser() {
  return trim(loadTextFile(
    oneOfTheFiles(
      javaxSecretDir("tinybrain-username"),
      userDir(".tinybrain/username"))));
}


static String standardCredentialsPass() {
  return trim(loadTextFile(
    oneOfTheFiles(
      javaxSecretDir("tinybrain-userpass"),
      userDir(".tinybrain/userpass"))));
}


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


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

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


static File javaxCachesDir_dir; // can be set to work on different base dir

static File javaxCachesDir() {
  return javaxCachesDir_dir != null ? javaxCachesDir_dir : new File(userHome(), "JavaX-Caches");
}

static File javaxCachesDir(String sub) {
  return newFile(javaxCachesDir(), sub);
}


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


static String exceptionToStringShort(Throwable e) {
  try {
    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;
  } catch (Throwable _e) { printStackTrace(_e);
    return "Error in exceptionToStringShort";
  }
}


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

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


static String hideCredentials(URL url) { return url == null ? null : hideCredentials(str(url)); }

static String hideCredentials(String url) {
  try {
    if (startsWithOneOf(url, "http://", "https://") && isAGIBlueDomain(hostNameFromURL(url))) return url;
  } catch (Throwable e) {
    print("HideCredentials", e);
  }
  return url.replaceAll("([&?])(_pass|key|cookie)=[^&\\s\"]*", "$1$2=<hidden>");
}

static String hideCredentials(Object o) {
  return hideCredentials(str(o));
}


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


static 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) {
    //printShortException(e);
  }
  
}


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

// convenience shortcut for keys_gen
static Set keys(Object map) {
  return keys((Map) map);
}




  static <A, B> Set<A> keys(IMultiMap<A, B> mm) {
    return mm == null ? null : mm.keySet();
  }





static <A> A optPar(ThreadLocal<A> tl, A defaultValue) {
  A a = tl.get();
  if (a != null) {
    tl.set(null);
    return a;
  }
  return defaultValue;
}

static <A> A optPar(ThreadLocal<A> tl) {
  return optPar(tl, null);
}

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

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

static Object optPar(String name, Map params) {
  return optParam(name, params);
}

static <A> A optPar(Object[] params, String name, A defaultValue) {
  return optParam(params, name, defaultValue);
}

static <A> A optPar(String name, Object[] params, A defaultValue) {
  return optParam(params, name, defaultValue);
}


static Map vm_generalSubMap(Object name) {
  synchronized(vm_generalMap()) {
    Map map =  (Map) (vm_generalMap_get(name));
    if (map == null)
      vm_generalMap_put(name, map = synchroMap());
    return map;
  }
}



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


static InputStream urlConnection_getInputStream(URLConnection con) throws IOException {
  return con.getInputStream();
}


static GZIPInputStream newGZIPInputStream(File f) {
  return gzInputStream(f);
}

static GZIPInputStream newGZIPInputStream(InputStream in) {
  return gzInputStream(in);
}


static 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);
    }
  }
  return unquoteSingleOrDoubleQuotes(s);
}


static String toHex(byte[] bytes) {
  return bytesToHex(bytes);
}

static String toHex(byte[] bytes, int ofs, int len) {
  return bytesToHex(bytes, ofs, len);
}



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




// legacy mode





//sbool ping_actions_shareable = true;
static volatile boolean ping_pauseAll = false;
static int ping_sleep = 100; // poll pauseAll flag every 100
static volatile boolean ping_anyActions = false;
static Map<Thread, Object> ping_actions = newWeakHashMap();
static ThreadLocal<Boolean> ping_isCleanUpThread = new ThreadLocal();

// ignore pingSource if not PingV3
static boolean ping(PingSource pingSource) { return ping(); }

// always returns true
static boolean ping() {
  //ifdef useNewPing
  newPing();
  //endifdef
  if (ping_pauseAll || ping_anyActions) ping_impl(true /* XXX */);
  //ifndef LeanMode ping_impl(); endifndef
  return true;
}

// returns true when it slept
static boolean ping_impl(boolean okInCleanUp) { try {
  if (ping_pauseAll && !isAWTThread()) {
    do
      Thread.sleep(ping_sleep);
    while (ping_pauseAll);
    return true;
  }
  
  if (ping_anyActions) { // don't allow sharing ping_actions
    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 Matcher regexpMatcher(String pat, String s) {
  return compileRegexp(pat).matcher(unnull(s));
}

static Matcher regexpMatcher(java.util.regex.Pattern pat, String s) {
  return pat.matcher(unnull(s));
}


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


static URLConnection openConnection(String url) { try {
  return openConnection(new URL(url));
} catch (Exception __e) { throw rethrow(__e); } }

static URLConnection openConnection(URL url) { try {
  ping();
  
  callOpt(javax(), "recordOpenURLConnection", str(url));
  
  return url.openConnection();
} catch (Exception __e) { throw rethrow(__e); } }


static int toInt(Object o) {
  if (o == null) return 0;
  if (o instanceof Number)
    return ((Number) o).intValue();
  if (o instanceof String)
    return parseInt((String) o);
  if (o instanceof Boolean)
    return boolToInt((Boolean) o);
  throw fail("woot not int: " + getClassName(o));
}

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


static 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 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 File getProgramDir() {
  return programDir();
}

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


static <A, B> Map<A, B> newDangerousWeakHashMap() {
  return _registerDangerousWeakMap(synchroMap(new WeakHashMap()));
}

// initFunction: voidfunc(Map) - is called initially, and after clearing the map
static <A, B> Map<A, B> newDangerousWeakHashMap(Object initFunction) {
  return _registerDangerousWeakMap(synchroMap(new WeakHashMap()), initFunction);
}


static 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 boolean call_checkArgs(Method m, Object[] args, boolean debug) {
  Class<?>[] types = m.getParameterTypes();
  if (types.length != l(args)) {
    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 Field makeAccessible(Field f) {
  try {
    f.setAccessible(true);
  } catch (Throwable e) {
    // Note: The error reporting only works with Java VM option --illegal-access=deny
    
    vmBus_send("makeAccessible_error", e, f);
    
  }
  return f;
}

static Method makeAccessible(Method m) {
  try {
    m.setAccessible(true);
  } catch (Throwable e) {
    
    vmBus_send("makeAccessible_error", e, m);
    
  }
  return m;
}

static Constructor makeAccessible(Constructor c) {
  try {
    c.setAccessible(true);
  } catch (Throwable e) {
    
    vmBus_send("makeAccessible_error", e, c);
    
  }
  return c;
}


// PersistableThrowable doesn't hold GC-disturbing class references in backtrace
static volatile PersistableThrowable lastException_lastException;

static PersistableThrowable lastException() {
  return lastException_lastException;
}

static void lastException(Throwable e) {
  lastException_lastException = persistableThrowable(e);
}


static <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 <A> int indexOf(List<A> l, int startIndex, A a) {
  return indexOf(l, a, startIndex);
}

static <A> int indexOf(List<A> l, A a) {
  if (l == null) return -1;
  return l.indexOf(a);
}

static int indexOf(String a, String b) {
  return a == null || b == null ? -1 : a.indexOf(b);
}

static int indexOf(String a, String b, int i) {
  return a == null || b == null ? -1 : a.indexOf(b, i);
}

static int indexOf(String a, char b) {
  return a == null ? -1 : a.indexOf(b);
}

static int indexOf(String a, int i, char b) {
  return indexOf(a, b, i);
}

static int indexOf(String a, char b, int i) {
  return a == null ? -1 : a.indexOf(b, i);
}

static int indexOf(String a, int i, String b) {
  return a == null || b == null ? -1 : a.indexOf(b, i);
}

static <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 <A> int indexOf(Iterable<A> l, A a) {
  if (l == null) return -1;
  int i = 0;
  for (A x : l) {
    if (eq(x, a))
      return i;
    i++;
  }
  return -1;
}



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


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

static void pcallFAll_minimalExceptionHandling(Iterator it, Object... args) {
  while  (it.hasNext()) { ping(); pcallF_minimalExceptionHandling(it.next(), args); }
}


static Set vm_busListeners_live_cache;
static Set vm_busListeners_live() { if (vm_busListeners_live_cache == null) vm_busListeners_live_cache = vm_busListeners_live_load(); return vm_busListeners_live_cache;}

static Set vm_busListeners_live_load() {
  return vm_generalIdentityHashSet("busListeners");
}




static ThreadLocal<PCallPolicy> pcallPolicyForThread_tl_tl = new ThreadLocal();

static ThreadLocal<PCallPolicy> pcallPolicyForThread_tl() {
  return pcallPolicyForThread_tl_tl;
}


static PCallPolicy defaultPCallPolicy = __1 -> printStackTrace(__1);

static PCallPolicy defaultPCallPolicy() {
  return defaultPCallPolicy;
}

static void defaultPCallPolicy_set(PCallPolicy policy) {
  defaultPCallPolicy = policy;
}




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


static void logQuotedWithTime(String s) {
  logQuotedWithTime(standardLogFile(), s);
}

static void logQuotedWithTime(File logFile, String s) {
  logQuoted(logFile, logQuotedWithTime_format(s));
}

static void logQuotedWithTime(String logFile, String s) {
  logQuoted(logFile, logQuotedWithTime_format(s));
}

static String logQuotedWithTime_format(String s) {
  return /*formatGMTWithDate_24*/(now()) + " " + s;
}


static void removeFromMultiPort(long vport) {
  if (vport == 0) return;
  for (Object port : getMultiPorts())
    call(port, "removePort", vport);
}


static 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 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 String callStaticAnswerMethod(String s) {
  return callStaticAnswerMethod(mc(), s);
}

static String callStaticAnswerMethod(String s, List<String> history) {
  return callStaticAnswerMethod(mc(), s, history);
}

static 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 List<Object> record_list = synchroList();

static void record(Object o) {
  record_list.add(o);
}


static Object addToMultiPort_responder;

static 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 long addToMultiPort(final String botName, final Object responder) {
  //print(botName);
  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 AtomicInteger dialogServer_clients = new AtomicInteger();
static boolean dialogServer_printConnects = false;
static ThreadLocal<Boolean> startDialogServer_quiet = new ThreadLocal();

static Set<String> dialogServer_knownClients = synchroTreeSet();

static int startDialogServerOnPortAbove(int port, IDialogHandler handler) {
  while (!forbiddenPort(port) && !startDialogServerIfPortAvailable(port, handler))
    ++port;
  return port;
}

static int startDialogServerOnPortAboveDaemon(int port, IDialogHandler handler) {
  while (!forbiddenPort(port) && !startDialogServerIfPortAvailable(port, handler, true))
    ++port;
  return port;
}

static void startDialogServer(int port, IDialogHandler handler) {
  if (!startDialogServerIfPortAvailable(port, handler))
    throw fail("Can't start dialog server on port " + port);
}

static boolean startDialogServerIfPortAvailable(int port, final IDialogHandler handler) {
  return startDialogServerIfPortAvailable(port, handler, false);
}

static ServerSocket startDialogServer_serverSocket;
  
static boolean startDialogServerIfPortAvailable(int port, final IDialogHandler handler, boolean daemon) {
  ServerSocket serverSocket = null;
  try {
    serverSocket = new ServerSocket(port);
  } catch (IOException e) {
    // probably the port number is used - let's assume there already is a chat server.
    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() {
            
              // This should be the same as #1001076 (talkTo)
            
  boolean isLocalConnection() {
    return s.getInetAddress().isLoopbackAddress();
  }
  
  boolean isStillConnected() {
    return !(eos || s.isClosed());
  }
  
  void sendLine(String line) { try {
    w.write(line + "\n");
    w.flush();
  } catch (Exception __e) { throw rethrow(__e); } }
  
  String readLineImpl() { try {
    return in.readLine();
  } catch (Exception __e) { throw rethrow(__e); } }
  
  public void close() {
    try {
      s.close();
    } catch (IOException e) {
      // whatever
    }
  }
  
  Socket getSocket() {
    return s;
  }
  };
            
            try {
              handler.run(io);
            } finally {
              if (!io.noClose)
                s.close();
            }
          } catch (IOException e) {
            print("[internal] " + e);
          } finally {
            //print("client disconnect - " + dialogServer_clients.decrementAndGet() + " remaining");
          }
         }
        }; // Thread t2
        t2.setDaemon(true); // ?
        t2.start();
      } catch (SocketTimeoutException e) {
      }
    }   
   } catch (IOException e) {
     print("[internal] " + e);
   }
  }};
  if (daemon) thread.setDaemon(true);
  thread.start();
 
  if (!isTrue(getAndClearThreadLocal(startDialogServer_quiet)))
    print("Dialog server on port " + port + " started."); 
  return true;
}


static volatile boolean readLine_noReadLine = false;

static String readLine_lastInput;
static String readLine_prefix = "[] ";

static String readLine() {
  if (readLine_noReadLine) return null;
  String s = readLineHidden();
  if (s != null) {
    readLine_lastInput = s;
    print(readLine_prefix + s);
  }
  return s;
}


static String getInnerMessage(Throwable e) {
  if (e == null) return null;
  return getInnerException(e).getMessage();
}


static boolean publicCommOn() {
  return "1".equals(loadTextFile(new File(userHome(), ".javax/public-communication")));
}


static int randomID_defaultLength = 12;

static String randomID(int length) {
  return makeRandomID(length);
}

static String randomID(Random r, int length) {
  return makeRandomID(r, length);
}

static String randomID() {
  return randomID(randomID_defaultLength);
}

static String randomID(Random r) {
  return randomID(r, randomID_defaultLength);
}


static int shorten_default = 100;

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

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

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

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


static Throwable getInnerException(Throwable e) {
  if (e == null) return null;
  while (e.getCause() != null)
    e = e.getCause();
  return e;
}

static Throwable getInnerException(Runnable r) {
  return getInnerException(getException(r));
}


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

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

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

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

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

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

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


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



static String indentx(Object s) {
  return indentx(strOrEmpty(s));
}

static String indentx(String s) {
  return indentx(indent_default, s);
}

static String indentx(int n, String s) {
  return dropSuffix(repeat(' ', n), indent(n, s));
}

static String indentx(String indent, String s) {
  return dropSuffix(indent, indent(indent, s));
}


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 String processID_cached;

// try to get our current process ID
static String getPID() {
  if (processID_cached == null) {
    String name = ManagementFactory.getRuntimeMXBean().getName();
    processID_cached = name.replaceAll("@.*", "");
  }
  return processID_cached;
}


static String getInjectionID() {
  return (String) call(getJavaX(), "getInjectionID", getMainClass());
}


static String getProgramTitle() {
  return getProgramName();
}


static 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 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 String defaultBotName() {
  return getProgramTitle() + ".";
}


static List<VF1<Map>> _threadInfo_makers = synchroList();

static Object _threadInfo() {
  if (empty(_threadInfo_makers)) return null;
  HashMap map = new HashMap();
  pcallFAll(_threadInfo_makers, map);
  return map;
}


static String shortClassName_dropNumberPrefix(Object o) {
  return dropNumberPrefix(shortClassName(o));
}


static List<VF1<Map>> _threadInheritInfo_retrievers = synchroList();

static void _threadInheritInfo(Object info) {
  if (info == null) return;
  pcallFAll(_threadInheritInfo_retrievers, (Map) info);
}


static AutoCloseable tempActivity(Object r) {
  return null;
}


static long fixTimestamp(long timestamp) {
  return timestamp > now() ? 0 : timestamp;
}


static Object pcallF(Object f, Object... args) {
  return pcallFunction(f, args);
}


static <A> A pcallF(F0<A> f) {
  try { return f == null ? null : f.get(); } catch (Throwable __e) { pcallFail(__e); } return null;
}



static <A, B> B pcallF(F1<A, B> f, A a) {
  try { return f == null ? null : f.get(a); } catch (Throwable __e) { pcallFail(__e); } return null;
}



static <A> void pcallF(VF1<A> f, A a) {
  try {
    { if (f != null) f.get(a); }
  } catch (Throwable __e) { pcallFail(__e); }
}


static Object pcallF(Runnable r) {
  try { { if (r != null) r.run(); } } catch (Throwable __e) { pcallFail(__e); } return null;
}

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

static <A, B> B pcallF(IF1<A, B> f, A a) {
  try { return f == null ? null : f.get(a); } catch (Throwable __e) { pcallFail(__e); } return null;
}



static <A> Set<A> synchroHashSet() {
  return synchronizedSet(new HashSet<A>());
}



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




static void closeAutoCloseables(Collection<AutoCloseable> l) {
  if (l != null) for (AutoCloseable c : l) { try { c.close(); } catch (Throwable __e) { pcallFail(__e); }}
}


static <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 boolean boolOptParam(ThreadLocal<Boolean> tl) {
  return isTrue(optPar(tl));
}

// defaults to false
static boolean boolOptParam(Object[] __, String name) {
  return isTrue(optParam(__, name));
}

static boolean boolOptParam(String name, Object[] __) {
  return boolOptParam(__, name);
}

static boolean boolOptParam(String name, Map __) {
  return isTrue(optPar(name, __));
}


static <A> A optParam(ThreadLocal<A> tl, A defaultValue) {
  return optPar(tl, defaultValue);
}

static <A> A optParam(ThreadLocal<A> tl) {
  return optPar(tl);
}

static Object optParam(String name, Map params) {
  return mapGet(params, name);
}

// now also takes a map as single array entry
static <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 Object optParam(Object[] opt, String name) {
  return optParam(opt, name, null);
}

static Object optParam(String name, Object[] params) {
  return optParam(params, name);
}


static boolean nemptyString(String s) {
  return s != null && s.length() > 0;
}


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


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


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




// TODO: cyclic structures involving certain lists & sets



static Object unstructure(String text) {
  return unstructure(text, false);
}

static Object unstructure(String text, boolean allDynamic) {
  return unstructure(text, allDynamic, null);
}

static Object unstructure(String text, IF1<String, Class> classFinder) {
  return unstructure(text, false, classFinder);
}

static int structure_internStringsLongerThan = 50;
static int unstructure_unquoteBufSize = 100;

static int unstructure_tokrefs; // stats

abstract static class unstructure_Receiver {
  abstract void set(Object o);
}

// classFinder: func(name) -> class (optional)
static Object unstructure(String text, boolean allDynamic,
  Object classFinder) {
  if (text == null) return null;
  return unstructure_tok(javaTokC_noMLS_iterator(text), allDynamic, classFinder);
}

static Object unstructure_reader(BufferedReader reader) {
  return unstructure_tok(javaTokC_noMLS_onReader(reader), false, null);
}

interface unstructure_Handler {
  void parse(int refID, int tokIndex, unstructure_Receiver out);
}
  
static class Unstructurer {
   final public Unstructurer setTok(Producer<String> tok){ return tok(tok); }
public Unstructurer tok(Producer<String> tok) { this.tok = tok; return this; }  final public Producer<String> getTok(){ return tok(); }
public Producer<String> tok() { return tok; }
 Producer<String> tok;
   final public Unstructurer setAllDynamic(boolean allDynamic){ return allDynamic(allDynamic); }
public Unstructurer allDynamic(boolean allDynamic) { this.allDynamic = allDynamic; return this; }  final public boolean getAllDynamic(){ return allDynamic(); }
public boolean allDynamic() { return allDynamic; }
 boolean allDynamic = false;
  int i = -1;
  Object classFinder;
  String mcDollar = actualMCDollar();
  
  Unstructurer classFinder(Object _classFinder) {
    classFinder = _classFinder != null ? _classFinder : _defaultClassFinder();
    return this;
  }

  // use Eclipse primitive collection if possible (smaller & hopefully faster?)
  
  
  HashMap<Integer, Object> refs = new HashMap();
  HashMap<Integer, Object> tokrefs = new HashMap();
  
  
  HashSet<String> concepts = new HashSet();
  List<Runnable> stack = new ArrayList();
  Map<String, String> baseClassMap = new HashMap();
  HashMap<Class, Constructor> innerClassConstructors = new HashMap();
  String curT;
  char[] unquoteBuf = new char[unstructure_unquoteBufSize];
  
  // value is a class or a Handler
  final HashMap<String, Object> handlers = new HashMap();
  
  Unstructurer() {
    try {
      Class mc =  (Class) (callF(classFinder, "<main>"));
      if (mc != null) mcDollar = mc.getName() + "$";
    } catch (Throwable __e) { pcallFail(__e); }
    
    makeHandlers();
  }
  
  
  
  void makeHandlers() {
    unstructure_Handler h;
    
    handlers.put("bigint", (unstructure_Handler) (refID, tokIndex, out)
      -> out.set(parseBigInt()));
      
    handlers.put("d", (unstructure_Handler) (refID, tokIndex, out)
      -> out.set(parseDouble()));
      
    handlers.put("fl", (unstructure_Handler) (refID, tokIndex, out)
      -> out.set(parseFloat()));
      
    handlers.put("sh", (unstructure_Handler) (refID, tokIndex, out) -> {
      consume();
      String t = tpp();
      if (t.equals("-")) {
        t = tpp();
        out.set((short) (-parseInt(t))); return;
      }
      out.set((short) parseInt(t));
    });
    
    handlers.put("enum", (unstructure_Handler) (refID, tokIndex, out) -> {
      consume();
      String t = tpp();
      assertTrue(isJavaIdentifier(t));
      String fullClassName = mcDollar + t;
      Class _c = findAClass(fullClassName);
      if (_c == null) throw fail("Enum class not found: " + fullClassName);
      int ordinal = parseInt(tpp());
      out.set(_c.getEnumConstants()[ordinal]);
    });

    handlers.put("false", h = (unstructure_Handler) (refID, tokIndex, out) -> {
      consume(); out.set(false);
    });
    handlers.put("f", h);
    
    handlers.put("true", h = (unstructure_Handler) (refID, tokIndex, out) -> {
      consume(); out.set(true);
    });
    handlers.put("t", h);
    
    handlers.put("{", (unstructure_Handler) (refID, tokIndex, out) -> parseMap(out));
    
    handlers.put("[", (unstructure_Handler) (refID, tokIndex, out) -> {
      ArrayList l = new ArrayList();
      if (refID >= 0) refs.put(refID, l);
      this.parseList(l, out);
    });
    
    handlers.put("bitset", (unstructure_Handler) (refID, tokIndex, out) -> parseBitSet(out));
    
    handlers.put("array", h = (unstructure_Handler) (refID, tokIndex, out) -> parseArray(out));
    handlers.put("intarray", h);
    handlers.put("dblarray", h);
    handlers.put("floatarray", h);
    
    handlers.put("shortarray", (unstructure_Handler) (refID, tokIndex, out) -> {
      consume();
      String hex = trivialUnquote(tpp());
      out.set(shortArrayFromBytes(hexToBytes(hex)));
    });
    
    handlers.put("longarray", (unstructure_Handler) (refID, tokIndex, out) -> {
      consume();
      String hex = trivialUnquote(tpp());
      out.set(longArrayFromBytes(hexToBytes(hex)));
    });
  } // end of makeHandlers - add more handlers here

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

  // look at current token
  String t() {
    return curT;
  }
  
  // get current token, move to next
  String tpp() {
    String t = curT;
    consume();
    return t;
  }
  
  void parse(final unstructure_Receiver out) {
    String t = t();
    
    int refID;
    if (structure_isMarker(t, 0, l(t))) {
      refID = parseInt(t.substring(1));
      consume();
    } else refID = -1;
    
    // if (debug) print("parse: " + quote(t));
    
    final int tokIndex = i;  
    parse_inner(refID, tokIndex, new unstructure_Receiver() {
      void set(Object o) {
        if (refID >= 0)
          refs.put(refID, o);
        if (o != null)
          tokrefs.put(tokIndex, o);
        out.set(o);
      }
    });
  }
  
  void parse_inner(int refID, int tokIndex, unstructure_Receiver out) {
    String t = t();
    
    // if (debug) print("parse_inner: " + quote(t));
    
    Object handler = handlers.get(t);
    if (handler instanceof unstructure_Handler)
      { ((unstructure_Handler) handler).parse(refID, tokIndex, out); return; }
      
    Class c =  (Class) handler;
    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("-")) {
        consume();
        t = tpp();
        out.set(isLongConstant(t) ? (Object) (-parseLong(t)) : (Object) (-parseInt(t))); return;
      }
      if (isInteger(t) || isLongConstant(t)) {
        consume();
        //if (debug) print("isLongConstant " + quote(t) + " => " + isLongConstant(t));
        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("-")) {
        consume();
        t = tpp();
        out.set(isLongConstant(t) ? (Object) (-parseLong(t)) : (Object) (-parseInt(t))); return;
      }
      if (isInteger(t) || isLongConstant(t)) {
        consume();
        //if (debug) print("isLongConstant " + quote(t) + " => " + isLongConstant(t));
        if (isLongConstant(t)) {
          out.set(parseLong(t)); return;
        }
        long l = parseLong(t);
        boolean isInt = l == (int) l;
        
        out.set(isInt ? (Object) Integer.valueOf((int) l) : (Object) Long.valueOf(l)); return;
      }
      
      if (t.equals("File")) {
        consume();
        File f = new File(unquote(tpp()));
        out.set(f); return;
      }
      
      if (t.startsWith("r") && isInteger(t.substring(1))) {
        consume();
        int ref = Integer.parseInt(t.substring(1));
        Object o = refs.get(ref);
        if (o == null)
          warn("unsatisfied back reference " + ref);
        out.set(o); return;
      }
    
      if (t.startsWith("t") && isInteger(t.substring(1))) {
        consume();
        int ref = Integer.parseInt(t.substring(1));
        Object o = tokrefs.get(ref);
        if (o == null)
          warn("unsatisfied token reference " + ref + " at " + tokIndex);
        out.set(o); return;
      }
      
      if (t.equals("hashset")) { parseHashSet(out); return; }
      if (t.equals("lhs")) { parseLinkedHashSet(out); return; }
      if (t.equals("treeset")) { parseTreeSet(out); return; }
      if (t.equals("ciset")) { parseCISet(out); return; }
      
      if (eqOneOf(t, "hashmap", "hm")) {
        consume();
        parseMap(new HashMap(), out);
        return;
      }
      if (t.equals("lhm")) {
        consume();
        parseMap(new LinkedHashMap(), out);
        return;
      }
      if (t.equals("tm")) {
        consume();
        parseMap(new TreeMap(), out);
        return;
      }
      if (t.equals("cimap")) {
        consume();
        parseMap(ciMap(), out);
        return;
      }
      
      if (t.equals("ll")) {
        consume();
        LinkedList l = new LinkedList();
        if (refID >= 0) refs.put(refID, l);
        { parseList(l, out); return; }
      }

      if (t.equals("syncLL")) { // legacy
        consume();
        { parseList(synchroLinkedList(), out); return; }
      }

      if (t.equals("sync")) {
        consume();
        { parse(new unstructure_Receiver() {
          void set(Object value) {
            if (value instanceof Map) {
               // Java 7
              if (value instanceof NavigableMap)
                { out.set(synchroNavigableMap((NavigableMap) value)); return; }
              
              if (value instanceof SortedMap)
                { out.set(synchroSortedMap((SortedMap) value)); return; }
              { out.set(synchroMap((Map) value)); return; }
            } else
              { out.set(synchroList((List) value)); return; }
          }
        }); return; }
      }
      
      if (t.equals("ba")) {
        consume();
        String hex = trivialUnquote(tpp());
        out.set(hexToBytes(hex)); return;
      }
      if (t.equals("boolarray")) {
        consume();
        int n = parseInt(tpp());
        String hex = trivialUnquote(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);
      }
      
      // custom deserialization (new static method method)
      if (eq(t, "cu")) {
        consume();
        t = tpp();
        assertTrue(isJavaIdentifier(t));
        String fullClassName = mcDollar + t;
        Class _c = findAClass(fullClassName);
        if (_c == null) throw fail("Class not found: " + fullClassName);
        parse(new unstructure_Receiver() {
          void set(Object value) {
            
            out.set(call(_c, "_deserialize", value));
          }
        });
        return;
      }
    }
    
    if (eq(t, "j")) {
      consume();
      out.set(parseJava()); return;
    }
    
    if (eq(t, "bc")) {
      consume();
      String c1 = tpp();
      String c2 = tpp();
      baseClassMap.put(c1, c2);
      { parse_inner(refID, i, out); return; }
    }
    
    // add more tokens here

    // Now we want to find our target class c
    // Have we failed to look up the class before?
    //bool seenBefore = handlers.containsKey(cname);

    // If we have seen the class before, we skip all of this
    // and simply leave c as null
    // TODO - how do we fill className?
    //if (!seenBefore) {
      if (c == null && !isJavaIdentifier(t))
        throw new RuntimeException("Unknown token " + (i+1) + ": " + quote(t));
        
      // any other class name (or package name)
      consume();
      String className, fullClassName;
      
      // Is it a package name?
      if (eq(t(), ".")) {
        className = t;
        do {
          consume();
          className += "." + assertIdentifier(tpp());
        } while (eq(t(), "."));
        fullClassName = className;
      } else {
        className = t;
        fullClassName = mcDollar + t;
      }
      
      if (c == null && !allDynamic) {
        // First, find class
        c = findAClass(fullClassName);
        handlers.put(className, c);
      }
      
      // check for existing base class
      if (c == null && !allDynamic) {
        Set<String> seen = new HashSet();
        String parent = className;
        while (true) {
          String baseName = baseClassMap.get(parent);
          if (baseName == null)
            break;
          if (!seen.add(baseName))
            throw fail("Cyclic superclass info: " + baseName);
          c = findAClass(mcDollar + baseName);
          if (c == null)
            print("Base class " + baseName + " of " + parent +  " doesn't exist either");
          else if (isAbstract(c))
            print("Can't instantiate abstract base class: " + c);
          else {
            printVars_str("Reverting to base class", "className", className, "baseName", baseName, "c", c);
            handlers.put(className, c);
            break;
          }
          parent = baseName;
        }
      }
    //}
        
    // Check if it has an outer reference
    boolean hasBracket = eq(t(), "(");
    if (hasBracket) consume();
    boolean hasOuter = hasBracket && startsWith(t(), "this$");
    
    DynamicObject dO = null;
    Object o = null;
    final String thingName = t;
    try {
      if (c != null) {
        if (hasOuter) try {
          Constructor ctor = innerClassConstructors.get(c);
          if (ctor == null)
            innerClassConstructors.put(c, ctor = nuStubInnerObject_findConstructor(c, classFinder));
          o = ctor.newInstance(new Object[] {null});
        } catch (Exception e) {
          print("Error deserializing " + c + ": " + e);
          o = nuEmptyObject(c);
        } else
          o = nuEmptyObject(c);
        if (o instanceof DynamicObject) dO = (DynamicObject) o;
      } else {
        if (concepts.contains(t) && (c = findAClass(mcDollar + "Concept")) != null)
          o = dO = (DynamicObject) nuEmptyObject(c);
        else
          dO = new DynamicObject();
        dO.className = className;
        
      }
    } catch (Throwable __e) { pcallFail(__e); } // end of pcall
    
    // Creating instance failed? Use DynamicObject
    if (o == null && dO == null)
      dO = new DynamicObject();
    
    // Save in references list early because contents of object
    // might link back to main object
    
    if (refID >= 0)
      refs.put(refID, o != null ? o : dO);
    tokrefs.put(tokIndex, o != null ? o : dO);
    
    // NOW parse the fields!
    
    HashMap<String, Object> fields = new HashMap(); // no longer preserving order (why did we do this?)
    Object _o = o;
    DynamicObject _dO = dO;
    if (hasBracket) {
      stack.add(new Runnable() {  public void run() { try { 
        
        if (eq(t(), ",")) consume();
        if (eq(t(), ")")) {
          consume(")");
          objRead(_o, _dO, fields, hasOuter);
          out.set(_o != null ? _o : _dO);
        } else {
          final String key = unquote(tpp());
          String t = tpp();
          if (!eq(t, "="))
            throw fail("= expected, got " + t + " after " + quote(key) + " in object " + thingName /*+ " " + sfu(fields)*/);
          stack.add(this);
          parse(new unstructure_Receiver() {
            void set(Object value) {
              fields.put(key, value);
              /*ifdef unstructure_debug
                print("Got field value " + value + ", next token: " + t());
              endifdef*/
              //if (eq(t(), ",")) consume();
            }
          });
        }
      
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "ifdef unstructure_debug\r\n          print(\"in object values, token: \" + t());\r..."; }});
    } else {
      objRead(o, dO, fields, hasOuter);
      out.set(o != null ? o : dO);
    }
  }
  
  void objRead(Object o, DynamicObject dO, Map<String, Object> fields, boolean hasOuter) {
    
    
    // translate between diferent compilers (this$0 vs this$1)
    Object outer = fields.get("this$0");
    if (outer != null) fields.put("this$1", outer);
    else {
      outer = fields.get("this$1");
      if (outer != null) fields.put("this$0", outer);
    }
    
    if (o != null) {
      if (dO != null) {
        
        setOptAllDyn_pcall(dO, fields);
      } else {
        setOptAll_pcall(o, fields);
        
      }
      if (hasOuter)
        fixOuterRefs(o);
    } else for (Map.Entry<String, Object> e : fields.entrySet())
      setDynObjectValue(dO, intern(e.getKey()), e.getValue());

    if (o != null)
      pcallOpt_noArgs(o, "_doneLoading");
  }
  
  void parseSet(final Set set, final unstructure_Receiver out) {
    this.parseList(new ArrayList(), new unstructure_Receiver() {
      void set(Object o) {
        set.addAll((List) o);
        out.set(set);
      }
    });
  }
  
  void parseLisp(final unstructure_Receiver out) {
    
    
    throw fail("class Lisp not included");
  }
  
  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() {
          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      } els..."; }});
  }
  
  void parseList(final List list, final unstructure_Receiver out) {
    tokrefs.put(i, list);
    consume("[");
    stack.add(new Runnable() {  public void run() { try { 
      if (eq(t(), "]")) {
        consume();
        
        out.set(list);
      } else {
        stack.add(this);
        parse(new unstructure_Receiver() {
          void set(Object o) {
            //if (debug) print("List element type: " + getClassName(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\n   ..."; }});
  }
  
  void parseArray(unstructure_Receiver out) {
    String _type = tpp();
    int dims;

    if (eq(t(), "S")) { // string array
      _type = "S";
      consume();
    }
    
    if (eq(t(), "/")) { // multi-dimensional array
      consume();
      dims = parseInt(tpp());
    } else
      dims = 1;
    
    consume("{");
    List list = new ArrayList();
    String type = _type;
    
    stack.add(new Runnable() {  public void run() { try { 
      if (eq(t(), "}")) {
        consume("}");
        if (dims > 1) {
          Class atype;
          if (type.equals("intarray")) atype = int.class;
          else if (type.equals("S")) atype = String.class;
          else throw todo("multi-dimensional arrays of other types");
          
          out.set(list.toArray((Object[]) newMultiDimensionalOuterArray(atype, dims, l(list))));
        } else
          out.set(
            type.equals("intarray") ? toIntArray(list)
            : type.equals("dblarray") ? toDoubleArray(list)
            : type.equals("floatarray") ? toFloatArray(list)
            : type.equals("S") ? toStringArray(list)
            : list.toArray());
      } else {
        stack.add(this);
        parse(new unstructure_Receiver() {
          void set(Object o) {
            list.add(o);
            if (eq(t(), ",")) consume();
          }
        });
      }
    
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "if (eq(t(), \"}\")) {\r\n        consume(\"}\");\r\n        if (dims > 1) {\r\n        ..."; }});
  }
  
  Object parseClass() {
    consume("class");
    consume("(");
    String name = unquote(tpp());
    consume(")");
    Class c = allDynamic ? null : findAClass(name);
    if (c != null) return c;
    DynamicObject dO = new DynamicObject();
    dO.className = "java.lang.Class";
    name = dropPrefix(mcDollar, name);
    dynamicObject_setRawFieldValue(dO, "name", name);
    return dO;
  }
  
  Object parseBigInt() {
    consume("bigint");
    consume("(");
    String val = tpp();
    if (eq(val, "-"))
      val = "-" + tpp();
    consume(")");
    return new BigInteger(val);
  }
  
  Object parseDouble() {
    consume("d");
    consume("(");
    String val = unquote(tpp());
    consume(")");
    return Double.parseDouble(val);
  }
  
  Object parseFloat() {
    consume("fl");
    String val;
    if (eq(t(), "(")) {
      consume("(");
      val = unquote(tpp());
      consume(")");
    } else {
      val = unquote(tpp());
    }
    return Float.parseFloat(val);
  }
  
  void parseHashSet(unstructure_Receiver out) {
    consume("hashset");
    parseSet(new HashSet(), out);
  }
  
  void parseLinkedHashSet(unstructure_Receiver out) {
    consume("lhs");
    parseSet(new LinkedHashSet(), out);
  }
  
  void parseTreeSet(unstructure_Receiver out) {
    consume("treeset");
    parseSet(new TreeSet(), out);
  }
  
  void parseCISet(unstructure_Receiver out) {
    consume("ciset");
    parseSet(ciSet(), out);
  }
  
  void parseMap(unstructure_Receiver out) {
    parseMap(new TreeMap(), out);
  }
  
  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;
    }
  }
  
  void parseMap(final Map map, final unstructure_Receiver out) {
    consume("{");
    stack.add(new Runnable() {
      boolean v = false;
      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() {
            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() {
              void set(Object o) {
                key = o;
              }
            });
          }
        } // if v else
      } // run()
    });
  }
  
  /*void parseSub(unstructure_Receiver out) {
    int n = l(stack);
    parse(out);
    while (l(stack) > n)
      stack
  }*/
  
  void consume() { curT = tok.next(); ++i; }
  
  void consume(String s) {
    if (!eq(t(), s)) {
      /*S prevToken = i-1 >= 0 ? tok.get(i-1) : "";
      S nextTokens = join(tok.subList(i, Math.min(i+2, tok.size())));
      fail(quote(s) + " expected: " + prevToken + " " + nextTokens + " (" + i + "/" + tok.size() + ")");*/
      throw fail(quote(s) + " expected, got " + quote(t()));
    }
    consume();
  }
  
  // outer wrapper function getting first token and unwinding the stack
  void parse_initial(unstructure_Receiver out) {
    consume(); // get first token
    parse(out);
    while (nempty(stack))
      popLast(stack).run();
  }
}

static Object unstructure_tok(Producer<String> tok, boolean allDynamic, Object classFinder) {
  boolean debug = unstructure_debug;
   AutoCloseable __1 = tempSetTL(dynamicObjectIsLoading_threadLocal(), true); try {
  Var v = new Var();
  var unstructurer = new Unstructurer()
    .tok(tok)
    .allDynamic(allDynamic)
    .classFinder(classFinder);
  unstructurer.parse_initial(new unstructure_Receiver() {
    void set(Object o) { v.set(o); }
  });
  unstructure_tokrefs = unstructurer.tokrefs.size();
  return v.get();
} finally { _close(__1); }}

static boolean unstructure_debug = false;


static Map vm_generalHashMap(Object name) {
  synchronized(vm_generalMap()) {
    Map m =  (Map) (vm_generalMap_get(name));
    if (m == null)
      vm_generalMap_put(name, m = syncHashMap());
    return m;
  }
}



static <A> Set<A> synchronizedSet() {
  return synchroHashSet();
}

static <A> Set<A> synchronizedSet(Set<A> set) {
  
  
    return Collections.synchronizedSet(set);
  
}


static <A> Set<A> identityHashSet() {
  return Collections.newSetFromMap(new IdentityHashMap());
}


static Object swing(Object f) {
  return swingAndWait(f);
}

static void swing(Runnable f) {
  swingAndWait(f);
}

static <A> A swing(F0<A> f) {
  return (A) swingAndWait(f);
}

static <A> A swing(IF0<A> f) {
  return (A) swingAndWait(f);
}


static void removeFromParent(final Component c) {
  if (c != null) { swing(() -> { 
    Container cc = c.getParent();
    if (cc != null) {
      cc.remove(c);
      revalidate(cc);
    }
  }); }
}


static <A, B> Pair<A, B> mapEntryToPair(Map.Entry<A, B> e) {
  return e == null ? null : pair(e.getKey(), e.getValue());
}


static <A, B> Set<Map.Entry<A,B>> entrySet(Map<A, B> map) {
  return _entrySet(map);
}


static <A, B> Pair<A, B> pair(A a, B b) {
  return new Pair(a, b);
}

static <A> Pair<A, A> pair(A a) {
  return new Pair(a, a);
}


static <A> A firstThat(Iterable<A> l, IF1<A, Boolean> pred) {
  for (A a : unnullForIteration(l))
    if (pred.get(a))
      return a;
  return null;
}

static <A> A firstThat(A[] l, IF1<A, Boolean> pred) {
  for (A a : unnullForIteration(l))
    if (pred.get(a))
      return a;
  return null;
}

static <A> A firstThat(IF1<A, Boolean> pred, Iterable<A> l) {
  return firstThat(l, pred);
}

static <A> A firstThat(IF1<A, Boolean> pred, A[] l) {
  return firstThat(l, pred);
}



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


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


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

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

static Object _get(String field, Object o) {
  return get(o, field);
}
static <A> A _get(A[] l, int idx) {
  return idx >= 0 && idx < l(l) ? l[idx] : null;
}


static 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 Object getOptDynOnly(DynamicObject o, String field) {
  if (o == null || o.fieldValues == null) return null;
  return o.fieldValues.get(field);
}


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


//static final Map<Class, HashMap<S, Field>> getOpt_cache = newDangerousWeakHashMap(f getOpt_special_init);

static class getOpt_Map extends WeakHashMap {
  getOpt_Map() {
    if (getOpt_special == null) getOpt_special = new HashMap();
    clear();
  }
  
  public void clear() {
    super.clear();
    //print("getOpt clear");
    put(Class.class, getOpt_special);
    put(String.class, getOpt_special);
  }
}

static final Map<Class, HashMap<String, Field>> getOpt_cache = 
  
  
    _registerDangerousWeakMap(synchroMap(new getOpt_Map()));
  
  
static HashMap getOpt_special; // just a marker

/*static void getOpt_special_init(Map map) {
  map.put(Class.class, getOpt_special);
  map.put(S.class, getOpt_special);
}*/

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

static Object getOpt_cached(Object o, String field) { try {
  if (o == null) return null;

  Map<String, Field> map = getOpt_getFieldMap(o);

  if (map == getOpt_special) {
    if (o instanceof Class)
      return getOpt((Class) o, field);
    /*if (o instanceof S)
      ret getOpt(getBot((S) o), field);*/
    if (o instanceof Map)
      return ((Map) o).get(field);
  }
    
  Field f = map.get(field);
  if (f != null) return f.get(o);
  
    if (o instanceof DynamicObject)
      return syncMapGet2(((DynamicObject) o).fieldValues, field);
  
  return null;
} catch (Exception __e) { throw rethrow(__e); } }

// used internally - we are in synchronized block
static 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 boolean regionMatchesIC(String a, int offsetA, String b, int offsetB, int len) {
  
  
    return a != null && a.regionMatches(true, offsetA, b, offsetB, len);
  
}


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


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


static Class getMainClass() {
  return mc();
}

static Class getMainClass(Object o) { try {
  if (o == null) return null;
  if (o instanceof Class && eq(((Class) o).getName(), "x30")) return (Class) o;
  ClassLoader cl = (o instanceof Class ? (Class) o : o.getClass()).getClassLoader();
  if (cl == null) return null;
  String name = mainClassNameForClassLoader(cl);
  return loadClassFromClassLoader_orNull(cl, name);
} catch (Exception __e) { throw rethrow(__e); } }


static int jfind(String s, String in) {
  return jfind(javaTok(s), in);
}

static int jfind(List<String> tok, String in) {
  return jfind(tok, 1, in);
}

static int jfind(List<String> tok, int startIdx, String in) {
  return jfind(tok, startIdx, in, (ITokCondition) null);
}

static int jfind(List<String> tok, String in, Object condition) {
  return jfind(tok, 1, in, condition);
}

static int jfind(List<String> tok, String in, IIntPred condition) { return jfind(tok, 1, in, condition); }
static int jfind(List<String> tok, int startIndex, String in, IIntPred condition) {
  return jfind(tok, startIndex, in, tokCondition(condition));
}

static int jfind(List<String> tok, String in, ITokCondition condition) { return jfind(tok, 1, in, condition); }
static int jfind(List<String> tok, int startIndex, String in, ITokCondition condition) {
  return jfind(tok, startIndex, in, (Object) condition);
}

static int jfind(List<String> tok, int startIdx, String in, Object condition) {
  //LS tokin = jfind_preprocess(javaTok(in));
  return jfind(tok, startIdx, javaTokForJFind_array(in), condition);
}

// assumes you preprocessed tokin
static int jfind(List<String> tok, List<String> tokin) {
  return jfind(tok, 1, tokin);
}

static int jfind(List<String> tok, int startIdx, List<String> tokin) {
  return jfind(tok, startIdx, tokin, null);
}

static int jfind(List<String> tok, int startIdx, String[] tokinC, Object condition) {
  return findCodeTokens(tok, startIdx, false, tokinC, condition);
}

static int jfind(List<String> tok, int startIdx, List<String> tokin, Object condition) {
  return jfind(tok, startIdx, codeTokensAsStringArray(tokin), condition);
}

static 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 String joinSubList(List<String> l, int i, int j) {
  return join(subList(l, i, j));
}

static String joinSubList(List<String> l, int i) {
  return join(subList(l, i));
}




static String defaultProgramLogFileName() {
  return "log.txt";
}


static void _onJavaXSet() {}


static Object call_withVarargs(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.findStaticMethod(methodName, args);
    if (me != null)
      return invokeMethod(me, null, args);
      
    // try varargs
    List<Method> methods = cache.cache.get(methodName);
    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() + "." + methodName + "(" + formatArgumentClasses(args) + ") not found");
  } else {
    Class c = o.getClass();
    _MethodCache cache = callOpt_getCache(c);

    Method me = cache.findMethod(methodName, args);
    if (me != null)
      return invokeMethod(me, o, args);
      
    // try varargs
    List<Method> methods = cache.cache.get(methodName);
    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() + "." + methodName + "(" + formatArgumentClasses(args) + ") not found");
  }
} catch (Exception __e) { throw rethrow(__e); } }




static Map<String, List<String>> parse3_cachedInput_cache = synchronizedMRUCache(1000);

static 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 Map<String, List<String>> parse3_cachedPattern_cache = synchronizedMRUCache(1000);

static synchronized 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;
}




// match2 matches multiple "*" (matches a single token) wildcards and zero or one "..." wildcards (matches multiple tokens)

static String[] match2(List<String> pat, List<String> tok) {
  // standard case (no ...)
  int i = pat.indexOf("...");
  if (i < 0) return match2_match(pat, tok);
  
  pat = new ArrayList<String>(pat); // We're modifying it, so copy first
  pat.set(i, "*");
  while (pat.size() < tok.size()) {
    pat.add(i, "*");
    pat.add(i+1, ""); // doesn't matter
  }
  
  return match2_match(pat, tok);
}

static 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))) // bold change - match quoted and unquoted now. TODO: should remove
      return null;
  }
  return result.toArray(new String[result.size()]);
}



static String actualUserHome_value;
static String actualUserHome() {
  if (actualUserHome_value == null) {
    if (isAndroid())
      actualUserHome_value = "/storage/emulated/0/";
    else
      actualUserHome_value = System.getProperty("user.home");
  }
  return actualUserHome_value;
}

static File actualUserHome(String sub) {
  return newFile(new File(actualUserHome()), sub);
}


static File userDir() {
  return new File(userHome());
}

static File userDir(String path) {
  return new File(userHome(), path);
}


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


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

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


static boolean regionMatches(String a, int offsetA, String b, int offsetB, int len) {
  return a != null && b != null && a.regionMatches(offsetA, b, offsetB, len);
}

static boolean regionMatches(String a, int offsetA, String b) {
  return regionMatches(a, offsetA, b, 0, l(b));
}


static 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 String javaTok_substringC(String s, int i, int j) {
  return s.substring(i, j);
}


static 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;
    
    // scan for whitespace
    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);

    // scan for non-whitespace
    
    // Special JavaX syntax: 'identifier
    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 /*|| s.charAt(j) == '\n'*/) { // allow multi-line strings
          ++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)); // for stuff like "don't"
    else if (Character.isDigit(c)) {
      do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      if (j < l && s.charAt(j) == 'L') ++j; // Long constants like 1L
    } 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 boolean javaTokWithExisting_isCopyable(String t, String s, int i, int j) {
  return t.length() == j-i
    && s.regionMatches(i, t, 0, j-i); // << could be left out, but that's brave
}


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


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


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


// supports the usual quotings (", variable length double brackets) except ' quoting
static boolean isQuoted(String s) {
  
  
  if (isNormalQuoted(s)) return true; // use the exact version
  
  return isMultilineQuoted(s);
}


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


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


static boolean eqic(Symbol a, Symbol b) {
  return eq(a, b);
}

static boolean eqic(Symbol a, String b) {
  return eqic(asString(a), b);
}


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

static boolean contains(Iterable it, Object a) {
  if (it != null)
    for (Object o : it)
      if (eq(a, o))
        return true;
  return false;
}

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

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

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

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


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



static boolean contains(Rect r, Pt p) { return rectContains(r, p); }



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

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


static <A> void replaceCollection(Collection<A> dest, Collection<A> src) {
  if (dest == src) return;
  dest.clear();
  if (src != null) dest.addAll(src);
}


static int max(int a, int b) { return Math.max(a, b); }
static int max(int a, int b, int c) { return max(max(a, b), c); }
static long max(int a, long b) { return Math.max((long) a, b); }
static long max(long a, long b) { return Math.max(a, b); }
static double max(int a, double b) { return Math.max((double) a, b); }
static float max(float a, float b) { return Math.max(a, b); }
static double max(double a, double b) { return Math.max(a, b); }

static <A extends Comparable<A>> A max (Iterable<A> l) {
  A max = null;
  var it = iterator(l);
  if (it.hasNext()) {
    max = it.next();
    while (it.hasNext()) {
      A a = it.next();
      if (cmp(a, max) > 0)
        max = a;
    }
  }
  return max;
}

/*Nah.
static int max(Collection<Integer> c) {
  int x = Integer.MIN_VALUE;
  for (int i : c) x = max(x, i);
  ret x;
}*/

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

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

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

static <A extends Comparable<A>> A max(A a, A b) {
  return cmp(a, b) >= 0 ? a : b;
}


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

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

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

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

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

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

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

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

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

static <A extends Comparable<A>> A min(A a, A b) {
  return cmp(a, b) <= 0 ? a : b;
}


static void replaceListPart(List l, int i, int j, List l2) {
  replaceSublist(l, i, j, l2);
}




static WeakHasherMap<Symbol, Boolean> symbol_map = new WeakHasherMap(new Hasher<Symbol>() {
  public int hashCode(Symbol symbol) { return symbol.text.hashCode(); }
  public boolean equals(Symbol a, Symbol b) {
    if (a == null) return b == null;
    return b != null && eq(a.text, b.text);
  }
});



static Symbol symbol(String s) {
  
  
  if (s == null) return null;
  synchronized(symbol_map) {
    // TODO: avoid object creation by passing the string to findKey
    Symbol symbol = new Symbol(s, true);
    Symbol existingSymbol = symbol_map.findKey(symbol);
    if (existingSymbol == null)
      symbol_map.put(existingSymbol = symbol, true);
    
      
    return existingSymbol;
  }
  
}

static Symbol symbol(CharSequence s) {
  if (s == null) return null;
  
  
  if (s instanceof Symbol) return (Symbol) s;
  if (s instanceof String) return symbol((String) s);
  return symbol(str(s));
  
}

static Symbol symbol(Object o) {
  return symbol((CharSequence) o);
}


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




static <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 Object dm_current_generic() {
  return getWeakRef(dm_current_generic_tl().get());
}


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


static Runnable _topLevelErrorHandling(Runnable r) {


  if (r == null) return null;
  
  // maybe we don't want this anymore. just dm_current_generic()
  Object info = _threadInfo();
  Object mod = dm_current_generic();
  Runnable r2 = r;
  
  if (info != null || mod == null)
    r2 = new Runnable() {  public void run() { try { 
       AutoCloseable __1 =  (AutoCloseable) (rcall("enter", mod)); try {
      _threadInheritInfo(info);
      r.run();
    
} finally { _close(__1); }} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "temp (AutoCloseable) rcall enter(mod);\r\n      _threadInheritInfo(info);\r\n    ..."; }};
  r2 = rPcall(r2);
  return r2;

}


static <A, B> Map<A, B> newWeakHashMap() {
  return _registerWeakMap(synchroMap(new WeakHashMap()));
}


static Map vm_generalWeakSubMap(Object name) {
  synchronized(vm_generalMap()) {
    Map map =  (Map) (vm_generalMap_get(name));
    if (map == null)
      vm_generalMap_put(name, map = newWeakMap());
    return map;
  }
}



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


static int or0(Integer i) { return i == null ? 0 : i; }
static long or0(Long l) { return l == null ? 0L : l; }
static double or0(Double d) { return d == null ? 0.0 : d; }


// TODO: test if android complains about this
static boolean isAWTThread() {
  if (isAndroid()) return false;
  if (isHeadless()) return false;
  return isAWTThread_awt();
}

static boolean isAWTThread_awt() {
  return SwingUtilities.isEventDispatchThread();
}


static Object sleepQuietly_monitor = new Object();

static void sleepQuietly() { try {
  assertFalse(isAWTThread());
  synchronized(sleepQuietly_monitor) { sleepQuietly_monitor.wait(); }
} catch (Exception __e) { throw rethrow(__e); } }


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

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


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

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


static File localSnippetsDir() {
  return javaxDataDir("Personal Programs");
}

static File localSnippetsDir(String sub) {
  return newFile(localSnippetsDir(), sub);
}


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


static Map vm_generalMap_map;

static Map vm_generalMap() {
  if (vm_generalMap_map == null)
    
    
    
    vm_generalMap_map = (Map) get(javax(), "generalMap");
    
    
  return vm_generalMap_map;
}




static Charset utf8charset_cache;
static Charset utf8charset() { if (utf8charset_cache == null) utf8charset_cache = utf8charset_load(); return utf8charset_cache;}

static Charset utf8charset_load() {
  return Charset.forName("UTF-8");
}


static File oneOfTheFiles(String... paths) {
  if (paths != null) for (String path : paths)
    if (fileExists(path))
      return newFile(path);
  return null;
}

static File oneOfTheFiles(File... files) {
  return oneOfTheFiles(asList(files));
}

static File oneOfTheFiles(Iterable<File> files) {
  if (files != null) for (File f : files)
    if (fileExists(f))
      return f;
  return null;
}


static File javaxSecretDir_dir; // can be set to work on different base dir

static File javaxSecretDir() {
  return javaxSecretDir_dir != null ? javaxSecretDir_dir : new File(userHome(), "JavaX-Secret");
}

static File javaxSecretDir(String sub) {
  return newFile(javaxSecretDir(), sub);
}


static volatile Object isAllowed_function; // func(S, O[]) -> bool
static volatile boolean isAllowed_all = true;

static boolean isAllowed(String askingMethod, Object... args) {
  // check on VM level
  Object f = vm_generalMap_get("isAllowed_function");
  if (f != null && !isTrue(callF(f, askingMethod, args))) return false;
  
  // check locally
  return isAllowed_all || isTrue(callF(isAllowed_function, askingMethod, args));
}


static String baseClassName(String className) {
  return substring(className, className.lastIndexOf('.')+1);
}

static String baseClassName(Object o) {
  return baseClassName(getClassName(o));
}


static String prependIfNempty(String prefix, String s) {
  return empty(s) ? unnull(s) : prefix + s;
}




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

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



static boolean startsWithOneOf(String s, String... l) {
  for (String x : l) if (startsWith(s, x)) return true; return false;
}

static boolean startsWithOneOf(String s, Matches m, String... l) {
  for (String x : l) if (startsWith(s, x, m)) return true; return false;
}


static boolean isAGIBlueDomain(String domain) {
  return domainIsUnder(domain, theAGIBlueDomain());
}


static String hostNameFromURL(String url) { try {
  return empty(url) ? null : new URL(url).getHost();
} catch (Exception __e) { throw rethrow(__e); } }


static String getComputerID_quick() {
  return computerID();
}


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


static Map synchroMap() {
  return synchroHashMap();
}

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


static int gzInputStream_defaultBufferSize = 65536;

static GZIPInputStream gzInputStream(File f) { try {
  return gzInputStream(new FileInputStream(f));
} catch (Exception __e) { throw rethrow(__e); } }

static GZIPInputStream gzInputStream(File f, int bufferSize) { try {
  return gzInputStream(new FileInputStream(f), bufferSize);
} catch (Exception __e) { throw rethrow(__e); } }

static GZIPInputStream gzInputStream(InputStream in) {
  return gzInputStream(in, gzInputStream_defaultBufferSize);
}

static GZIPInputStream gzInputStream(InputStream in, int bufferSize) { try {
  return _registerIOWrap(new GZIPInputStream(in, gzInputStream_defaultBufferSize), in);
} catch (Exception __e) { throw rethrow(__e); } }


static String unquoteSingleOrDoubleQuotes(String s) {
  if (s == null) return null;
  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);
          // Octal escape?
          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;
          // Hex Unicode: u????
          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; // added by Stefan
          }
          i++;
        }
        sb.append(ch);
      }
      return sb.toString();
    }
  }
    
  return s; // not quoted - return original
}


static void newPing() {
  var tl = newPing_actionTL();
  Runnable action = tl == null ? null : tl.get();
  { if (action != null) action.run(); }
}


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


static Map<String, java.util.regex.Pattern> compileRegexp_cache = syncMRUCache(10);

static 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 Object callOpt(Object o) {
  return callF(o);
}

static Object callOpt(Object o, String method, Object... args) {
  return callOpt_withVarargs(o, method, args);
}


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


static File programDir_mine; // set this to relocate program's data

static File programDir() {
  return programDir(getProgramID());
}

static 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 File programDir(String snippetID, String subPath) {
  return new File(programDir(snippetID), subPath);
}


static List<Pair> _registerDangerousWeakMap_preList;

static <A> A _registerDangerousWeakMap(A map) {
  return _registerDangerousWeakMap(map, null);
}

static <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) {
    // We're in class init
    if (_registerDangerousWeakMap_preList == null) _registerDangerousWeakMap_preList = synchroList();
    _registerDangerousWeakMap_preList.add(pair(map, init));
    return map;
  }
  
  call(javax(), "_registerDangerousWeakMap", map, init);
  
  return map;
}

static void _onLoad_registerDangerousWeakMap() {
  
  assertNotNull(javax());
  if (_registerDangerousWeakMap_preList == null) return;
  for (Pair p : _registerDangerousWeakMap_preList)
    _registerDangerousWeakMap(p.a, p.b);
  _registerDangerousWeakMap_preList = null;
  
}


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


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

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



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

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


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


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

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


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


static Set vm_generalIdentityHashSet(Object name) {
  synchronized(vm_generalMap()) {
    Set set =  (Set) (vm_generalMap_get(name));
    if (set == null)
      vm_generalMap_put(name, set = syncIdentityHashSet());
    return set;
  }
}



static TimeZone localTimeZone() {
  return getTimeZone(standardTimeZone());
  // TimeZone.getDefault()?
}


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


static void logQuoted(String logFile, String line) {
  logQuoted(getProgramFile(logFile), line);
}

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


static List<Object> getMultiPorts() {
  return (List) callOpt(getJavaX(), "getMultiPorts");
}


static <A> ArrayList<A> litlist(A... a) {
  ArrayList l = new ArrayList(a.length);
  for (A x : a) l.add(x);
  return l;
}


static String emptyToNull(String s) {
  return eq(s, "") ? null : s;
}

static <A, B> Map<A, B> emptyToNull(Map<A, B> map) {
  return empty(map) ? null : map;
}


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

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



// start multi-port if none exists in current VM.
static void startMultiPort() {
  List mp = getMultiPorts();
  if (mp != null && mp.isEmpty()) {
    nohupJavax("#1001639");
    throw fail("Upgrading JavaX, please restart this program afterwards.");
    //callMain(hotwire("#1001672"));
  }
}


static <A> Set<A> synchroTreeSet() {
  return Collections.synchronizedSet(new TreeSet<A>());
}

static <A> Set<A> synchroTreeSet(TreeSet<A> set) {
  return Collections.synchronizedSet(set);
}


static boolean forbiddenPort(int port) {
  return port == 5037; // adb
}



static 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 String makeRandomID(int length) {
  return makeRandomID(length, defaultRandomGenerator());
}

static 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 String makeRandomID(Random r, int length) {
  return makeRandomID(length, r);
}


static CharSequence subCharSequence(CharSequence s, int x) {
  return subCharSequence(s, x, s == null ? 0 : s.length());
}

static CharSequence subCharSequence(CharSequence s, int x, int y) {
  if (s == null) return null;
  if (x < 0) x = 0;
  if (x >= s.length()) return "";
  if (y < x) y = x;
  if (y > s.length()) y = s.length();
  return s.subSequence(x, y);
}


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


static 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 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 <A> List<A> drop(Iterable<A> c, Object pred) {
  return antiFilter(c, pred);
}



static List drop(Object pred, Iterable c) {
  return antiFilter(pred, c);
}



static List drop(Object pred, Object[] c) {
  return antiFilter(pred, c);
}



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



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



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



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


static <A> ArrayList<A> toList(A[] a) { return asList(a); }
static ArrayList<Integer> toList(int[] a) { return asList(a); }
static ArrayList<Short> toList(short[] a) { return asList(a); }
static ArrayList<Long> toList(long[] a) { return asList(a); }
static ArrayList<Double> toList(double[] a) { return asList(a); }
static ArrayList<Float> toList(float[] a) { return asList(a); }
static <A> ArrayList<A> toList(Set<A> s) { return asList(s); }
static <A> ArrayList<A> toList(Iterable<A> s) { return asList(s); }


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


static 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 <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 <A> List<A> repeat(int n, A a) {
  return repeat(a, n);
}


static int indent_default = 2;

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

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

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

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

static 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 String getProgramName_cache;

static String getProgramName() {
  Lock __0 = downloadLock(); lock(__0); try {
  if (getProgramName_cache == null)
    getProgramName_cache = getSnippetTitleOpt(programID());
  return getProgramName_cache;
} finally { unlock(__0); } }

static void _onLoad_getProgramName() {
  { startThread(new Runnable() {  public void run() { try {  getProgramName(); 
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "getProgramName();"; }}); }
}


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


static void pcallFAll(Collection l, Object... args) {
  if (l != null) for (Object f : cloneList(l)) pcallF(f, args);
}

static void pcallFAll(Iterator it, Object... args) {
  while (it.hasNext()) pcallF(it.next(), args);
}


static String dropNumberPrefix(String s) {
  return dropFirst(s, indexOfNonDigit(s));
}


static 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 Object pcallFunction(Object f, Object... args) {
  try { return callFunction(f, args); } catch (Throwable __e) { pcallFail(__e); }
  return null;
}


// TODO: JDK 17!! ?? No! Yes? Yes!!

static Object collectionMutex(List l) {
  return l;
}

static Object collectionMutex(Object o) {
  

  if (o instanceof List) return o;
  
  // TODO: actually use our own maps so we can get the mutex properly
  
  String c = className(o);
  
    
  
    
  
  return o;
}


static <A, B> B mapGet(Map<A, B> map, A a) {
  return map == null || a == null ? null : map.get(a);
}

static <A, B> B mapGet(A a, Map<A, B> map) {
  return map == null || a == null ? null : map.get(a);
}


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

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

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


static Producer<String> javaTokC_noMLS_iterator(final String s) {
  return javaTokC_noMLS_iterator(s, 0);
}

static Producer<String> javaTokC_noMLS_iterator(final String s, final int startIndex) {
  return new Producer<String>() {
    final int l = s.length();
    int i = startIndex;
    
    public String next() {
      if (i >= l) return null;
      
      int j = i;
      char c, d;
      
      // scan for whitespace
      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);
  
      // scan for non-whitespace
      if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          if (s.charAt(j) == opener || s.charAt(j) == '\n') { // end at \n to not propagate unclosed string literal errors
            ++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; // Long constants like 1L
      } else
        ++j;
        
      String t = quickSubstring(s, i, j);
      i = j;
      return t;
    }
  };
}



static Producer<String> javaTokC_noMLS_onReader(final BufferedReader r) {
  final class X implements Producer<String> {
    StringBuilder buf = new StringBuilder(); // stores from "i"
    char c, d, e = 'x'; // just not '\0'
    
    X() {
      // fill c, d and e
      nc();
      nc();
      nc();
    }
    
    // get next character(s) into c, d and e
    void nc() { try {
      c = d;
      d = e;
      if (e == '\0') return;
      int i = r.read();
      e = i < 0 ? '\0'
        : i == '\0' ? '_' // shouldn't happen anymore
        : (char) i;
    } catch (Exception __e) { throw rethrow(__e); } }
    
    void ncSave() {
      if (c != '\0') {
        buf.append(c);
        nc();
      }
    }
    
    public String next() {
      // scan for whitespace
      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;

      // scan for non-whitespace
      if (c == '\'' || c == '"') {
        char opener = c;
        ncSave();
        while (c != '\0') {
          if (c == opener || c == '\n') { // end at \n to not propagate unclosed string literal errors
            ncSave();
            break;
          } else if (c == '\\') {
            ncSave();
            ncSave();
          } else
            ncSave();
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ncSave(); while (Character.isJavaIdentifierPart(c) || c == '\''); // for stuff like "don't"
      else if (Character.isDigit(c)) {
        do ncSave(); while (Character.isDigit(c));
        if (c == 'L') ncSave(); // Long constants like 1L
      } else
        ncSave();
        
      String t = buf.toString();
      buf.setLength(0);
      return t;
    }
  }
  
  return new X();
}



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


static Object _defaultClassFinder_value = defaultDefaultClassFinder();

static Object _defaultClassFinder() {
  return _defaultClassFinder_value;
}


static BigInteger parseBigInt(String s) {
  return new BigInteger(s);
}


static double parseDouble(String s) {
  return empty(s) ? 0.0 : Double.parseDouble(s);
}


static float parseFloat(String s) {
  return Float.parseFloat(s);
}


static void assertTrue(Object o) {
  if (!(eq(o, true) /*|| isTrue(pcallF(o))*/))
    throw fail(str(o));
}
  
static boolean assertTrue(String msg, boolean b) {
  if (!b)
    throw fail(msg);
  return b;
}

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

static boolean assertTrue(Scorer scorer, boolean b) {
  scorer.add(b);
  return b;
}


static 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 String trivialUnquote(String s) {
  return dropPrefixSuffix("\"", s);
}


static short[] shortArrayFromBytes(byte[] a) {
  return shortArrayFromBytes(a, 0, l(a));
}

static short[] shortArrayFromBytes(byte[] a, int from, int to) {
  short[] b = new short[(to-from)/2];
  for (int i = 0; i < b.length; i++)
    b[i] = shortFromBytes(a, from+i*2);
  return b;
}


static 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 long[] longArrayFromBytes(byte[] a) {
  return longArrayFromBytes(a, 0, l(a));
}

static long[] longArrayFromBytes(byte[] a, int from, int to) {
  long[] b = new long[(to-from)/8];
  for (int i = 0; i < b.length; i++)
    b[i] = longFromBytes_bigEndian(a, from+i*8);
  return b;
}


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

// returns null on not found
// this is the simple version that is not case-tolerant
static 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 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); // fallback
      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);
          // Octal escape?
          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;
          // Hex Unicode: u????
          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; // added by Stefan
          }
          i++;
        }
        buf[n++] = ch;
      }
      return new String(buf, 0, n);
    }
  }
    
  return s; // not quoted - return original
}


static 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 String internIfLongerThan(String s, int l) {
  return s == null ? null : l(s) >= l ? intern(s) : s;
}


static 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 boolean isLongConstant(String s) {
  if (!s.endsWith("L")) return false;
  s = s.substring(0, l(s)-1);
  return isInteger(s);
}


static boolean warn_on = true;
static ThreadLocal<List<String>> warn_warnings = new ThreadLocal();

static void warn(String s) {
  if (warn_on)
    print("Warning: " + s);
}

static void warn(String s, List<String> warnings) {
  warn(s);
  if (warnings != null)
    warnings.add(s);
  addToCollection(warn_warnings.get(), s);
}


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


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


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


static <A> List<A> synchroLinkedList() {
  return synchroList(new LinkedList<A>());
}



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


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


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

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


static boolean isAbstract(Class c) {
  return (c.getModifiers() & Modifier.ABSTRACT) != 0;
}

static boolean isAbstract(Method m) {
  return (m.getModifiers() & Modifier.ABSTRACT) != 0;
}


// Use like this: printVars_str(+x, +y);
// Or: printVars("bla", +x);
// Or: printVars bla(+x);
static void printVars_str(Object... params) {
  print(renderVars_str(params));
}


static <A> Constructor nuStubInnerObject_findConstructor(Class<A> c) { return nuStubInnerObject_findConstructor(c, null); }
static <A> Constructor nuStubInnerObject_findConstructor(Class<A> c, Object classFinder) { try {
  Class outerType = getOuterClass(c, classFinder);
  Constructor m = c.getDeclaredConstructor(outerType);
  makeAccessible(m);
  return m;
} catch (Exception __e) { throw rethrow(__e); } }


static Map<Class, Constructor> nuEmptyObject_cache = newDangerousWeakHashMap();

static <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 Constructor nuEmptyObject_findConstructor(Class c) {
  for (Constructor m : getDeclaredConstructors_cached(c))
    if (m.getParameterTypes().length == 0)
      return m;
  throw fail("No default constructor declared in " + c.getName());
}



static void setOptAllDyn_pcall(DynamicObject o, Map<String, Object> fields) {
  if (fields == null || o == null) return;
  HashMap<String, Field> fieldMap = instanceFieldsMap(o);
  for (Map.Entry<String, Object> e : fields.entrySet()) { try {
    String field = e.getKey();
    Object val = e.getValue();
    Field f = fieldMap.get(field);
    if (f != null)
      smartSet(f, o, val);
    else {
      dynamicObject_setRawFieldValue(o, intern(field), val);
      
    }
  } catch (Throwable __e) { pcallFail(__e); }}
}


static 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 void setOptAll_pcall(Object o, Object... values) {
  //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];
    try { setOpt(o, field, value); } catch (Throwable __e) { print(exceptionToStringShort(__e)); }
  }
}


static 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 void setDynObjectValue(DynamicObject o, String field, Object value) {
  dynamicObject_setRawFieldValue(o, field, value);
}


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


static void pcallOpt_noArgs(Object o, String method) {
  try { callOpt_noArgs(o, method); } catch (Throwable __e) { pcallFail(__e); }
}


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

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

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

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


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


static 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 double[] toDoubleArray(Collection<Double> l) {
  double[] a = new double[l(l)];
  int i = 0;
  if (a.length != 0) for (double x : l)
    a[i++] = x;
  return a;
}




  static double[] toDoubleArray(float... l) {
    double[] a = new double[l(l)];
    for (int i = 0; i < a.length; i++)
      a[i] = l[i];
    return a;
  }


  static double[] toDoubleArray(int... l) {
    double[] a = new double[l(l)];
    for (int i = 0; i < a.length; i++)
      a[i] = l[i];
    return a;
  }






static float[] toFloatArray(List<Float> l) {
  float[] a = new float[l(l)];
  for (int i = 0; i < a.length; i++)
    a[i] = l.get(i);
  return a;
}

static float[] toFloatArray(double[] l) {
  float[] a = new float[l(l)];
  for (int i = 0; i < a.length; i++)
    a[i] = (float) l[i];
  return a;
}


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


static void dynamicObject_setRawFieldValue(DynamicObject o, Object key, Object value) {
  if (o == null) return;
  
  // double sync, but should be OK here because of locking order o > o.fieldValues
  synchronized(o) {
    o.fieldValues = syncMapPut2_createLinkedHashMap((LinkedHashMap) o.fieldValues, key, value);
  }
}


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


// DIFFERENCES to jfind: always ignores case, doesn't recognize <id> etc
// You probably want jmatch2

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

static boolean jmatch(String pat, String s, Matches matches) {
  if (s == null) return false;
  return jmatch(pat, javaTok(s), matches);
}

static boolean jmatch(String pat, List<String> toks) {
  return jmatch(pat, toks, null);
}

static boolean jmatch(String pat, List<String> toks, Matches matches) {
  List<String> tokpat = javaTok(pat);
  String[] m = match2(tokpat, toks);
  //print(structure(tokpat) + " on " + structure(toks) + " => " + structure(m));
  if (m == null)
    return false;
  else {
    if (matches != null) matches.m = m;
    return true;
  }
}


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

// too ambiguous - maybe need to fix some callers
/*static O nuObject(O realm, S className, O... args) {
  ret nuObject(_getClass(realm, className), args);
}*/

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

static Constructor nuObject_findConstructor(Class c, Object... args) {
  for (Constructor m : getDeclaredConstructors_cached(c)) {
    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 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 <A> A popLast(List<A> l) {
  return liftLast(l);
}

static <A> List<A> popLast(int n, List<A> l) {
  return liftLast(n, l);
}




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


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



static ThreadLocal<Boolean> DynamicObject_loading = or((ThreadLocal) get(getClass("x30_pkg.x30_util"), "DynamicObject_loading"), new ThreadLocal());

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


static Map syncHashMap() {
  return synchroHashMap();
}


static void swingAndWait(Runnable r) { try {
  if (isAWTThread())
    r.run();
  else {
    r = addThreadInfoToRunnable(r);
    executingSwingCode(r);
    EventQueue.invokeAndWait(r);
  }
} catch (Exception __e) { throw rethrow(__e); } }

static Object swingAndWait(Object f) {
  if (isAWTThread())
    return callF(f);
  else {
    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 <A extends Component> A revalidate(final A c) {
  if (c == null || !c.isShowing()) return c;
  { swing(() -> { 
    // magic combo to actually relayout and repaint
    c.revalidate();
    c.repaint();
  }); }
  return c;
}

static void revalidate(JFrame f) { revalidate((Component) f); }
static void revalidate(JInternalFrame f) { revalidate((Component) f); }


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


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

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

static <A> List<A> unnullForIteration(List<A> l) { return l == null ? immutableEmptyList() : l; }
static byte[] unnullForIteration(byte[] l) { return l == null ? emptyByteArray() : l; }
static int[] unnullForIteration(int[] l) { return l == null ? emptyIntArray() : l; }
static char[] unnullForIteration(char[] l) { return l == null ? emptyCharArray() : l; }
static double[] unnullForIteration(double[] l) { return l == null ? emptyDoubleArray() : l; }
static short[] unnullForIteration(short[] l) { return l == null ? emptyShortArray() : l; }

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

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

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

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


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


//ifclass Symbol

static Symbol unnullForIteration(Symbol s) {
  return s == null ? emptySymbol() : s;
}
//endif



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


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


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


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

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


static <A, B> void put(Map<A, B> map, A a, B b) {
  if (map != null) map.put(a, b);
}

static <A> void put(List<A> l, int i, A a) {
  if (l != null && i >= 0 && i < l(l)) l.set(i, a);
}


static Class<?> _getClass(String name) {
  try {
    return Class.forName(name);
  } catch (ClassNotFoundException e) {
    return null; // could optimize this
  }
}

static Class _getClass(Object o) {
  return o == null ? null
    : o instanceof Class ? (Class) o : o.getClass();
}

static Class _getClass(Object realm, String name) {
  try {
    return classLoaderForObject(realm).loadClass(classNameToVM(name));
  } catch (ClassNotFoundException e) {
    return null; // could optimize this
  }
}


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

static <A, B> B syncMapGet2(A a, Map<A, B> map) {
  return syncMapGet2(map, a);
}


static boolean isSubtypeOf(Class a, Class b) {
  return a != null && b != null && b.isAssignableFrom(a); // << always hated that method, let's replace it!
}


static Set<String> reflection_classesNotToScan_value = litset(
  "jdk.internal.loader.URLClassPath"
);

static Set<String> reflection_classesNotToScan() {
  return reflection_classesNotToScan_value;
}


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


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


static ITokCondition tokCondition(IIntPred condition) {
  return condition == null ? null : (tok, nIdx) -> condition.get(nIdx);
}


// syntax 1: replace all occurrences of x in l with y
static <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;
}

// syntax 2: splice l at fromIndex-toIndex and replace middle part with y
static <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 <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 final Map<Class, _MethodCache> callOpt_cache = newDangerousWeakHashMap();

static 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);
    
    // TODO: (super-rare) case where method exists static and non-static
    // with different args
    
    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); } }

// no longer synchronizes! (see #1102990)
static _MethodCache callOpt_getCache(Class c) {
  _MethodCache cache = callOpt_cache.get(c);
  if (cache == null)
    callOpt_cache.put(c, cache = new _MethodCache(c));
  return cache;
}


static boolean isStaticMethod(Method m) {
  return methodIsStatic(m);
}


static Object[] massageArgsForVarArgsCall(Executable m, Object[] args) {
  Class<?>[] types = m.getParameterTypes();
  int n = types.length-1, nArgs = l(args);
  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);
  
  // TODO: optimize
  
  int nVarArgs = nArgs-n;
  Object varArgs = Array.newInstance(varArgType, nVarArgs);
  for (int i = 0; i < nVarArgs; i++)
    Array.set(varArgs, i, args[n+i]);
    
  newArgs[n] = varArgs;
  return newArgs;
}


static String formatArgumentClasses(Object[] args) {
  return joinWithComma(map(__26 -> getClassName(__26), args));
}


static List<String> parse3(String s) {
  return dropPunctuation(javaTokPlusPeriod(s));
}


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

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


static int isAndroid_flag;

static boolean isAndroid() {
  if (isAndroid_flag == 0)
    isAndroid_flag = System.getProperty("java.vendor").toLowerCase().indexOf("android") >= 0 ? 1 : -1;
  return isAndroid_flag > 0;
}



static 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 boolean isMultilineQuoted(String s) {
  if (!startsWith(s, "[")) return false;
  int i = 1, n = s.length();
  while (i < n && s.charAt(i) == '=') ++i;
  return i < n && s.charAt(i) == '[';
}


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


static boolean checkCondition(Object condition, Object... args) {
  return isTrue(callF(condition, args));
}

static <A> boolean checkCondition(IF1<A, Boolean> condition, A arg) {
  return isTrue(callF(condition, arg));
}


static boolean rectContains(int x1, int y1, int w, int h, Pt p) {
  return p.x >= x1 && p.y >= y1 && p.x < x1+w && p.y < y1+h;
}

static boolean rectContains(Rect a, Rect b) {
  return b.x >= a.x && b.y >= a.y && b.x2() <= a.x2() && b.y2() <= a.y2();
}

static boolean rectContains(Rect a, Rectangle b) {
  return rectContains(a, toRect(b));
}

static boolean rectContains(Rect a, int x, int y) {
  return a != null && a.contains(x, y);
}

static boolean rectContains(Rect a, Pt p) {
  return a != null && p != null && a.contains(p);
}


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


static int cmp(Number a, Number b) {
  return a == null ? b == null ? 0 : -1 : cmp(a.doubleValue(), b.doubleValue());
}

static int cmp(double a, double b) {
  return a < b ? -1 : a == b ? 0 : 1;
}

static int cmp(int a, int b) {
  return a < b ? -1 : a == b ? 0 : 1;
}

static int cmp(long a, long b) {
  return a < b ? -1 : a == b ? 0 : 1;
}

static 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 <A> A getWeakRef(Reference<A> ref) {
  return ref == null ? null : ref.get();
}


static x30_pkg.x30_util.BetterThreadLocal<WeakReference> dm_current_generic_tl;

static x30_pkg.x30_util.BetterThreadLocal<WeakReference> dm_current_generic_tl() {
  if (dm_current_generic_tl == null)
    dm_current_generic_tl = vm_generalMap_getOrCreate("currentModule", () -> new x30_pkg.x30_util.BetterThreadLocal());
  return dm_current_generic_tl;
}


static Runnable rPcall(Runnable r) {
  return r == null ? null : () -> { try { r.run(); } catch (Throwable __e) { pcallFail(__e); } };
}


static List _registerWeakMap_preList;

static <A> A _registerWeakMap(A map) {
  if (javax() == null) {
    // We're in class init
    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 void _onLoad_registerWeakMap() {
  assertNotNull(javax());
  if (_registerWeakMap_preList == null) return;
  for (Object o : _registerWeakMap_preList)
    _registerWeakMap(o);
  _registerWeakMap_preList = null;
}


static <A, B> Map<A, B> newWeakMap() {
  return newWeakHashMap();
}


static <A> WeakReference<A> newWeakReference(A a) {
  return a == null ? null : new WeakReference(a);
}


static Boolean isHeadless_cache;

static boolean isHeadless() {
  if (isHeadless_cache != null) return isHeadless_cache;
  if (isAndroid()) return isHeadless_cache = true;
  if (GraphicsEnvironment.isHeadless()) return isHeadless_cache = true;
  
  // Also check if AWT actually works.
  // If DISPLAY variable is set but no X server up, this will notice.
  
  try {
    SwingUtilities.isEventDispatchThread();
    return isHeadless_cache = false;
  } catch (Throwable e) { return isHeadless_cache = true; }
}


static void assertFalse(Object o) {
  if (!(eq(o, false) /*|| isFalse(pcallF(o))*/))
    throw fail(str(o));
}
  
static boolean assertFalse(boolean b) {
  if (b) throw fail("oops");
  return b;
}

static boolean assertFalse(String msg, boolean b) {
  if (b) throw fail(msg);
  return b;
}



static File javaxDataDir_dir; // can be set to work on different base dir

static File javaxDataDir() {
  return javaxDataDir_dir != null ? javaxDataDir_dir : new File(userHome(), "JavaX-Data");
}

static File javaxDataDir(String... subs) {
  return newFile(javaxDataDir(), subs);
}


static boolean fileExists(String path) {
  return path != null && new File(path).exists();
}

static boolean fileExists(File f) {
  return f != null && f.exists();
}


// unclear semantics as to whether return null on null

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

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

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

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

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

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

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

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

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


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



static <A> List<A> asList(Pair<A, A> p) {
  return p == null ? null : ll(p.a, p.b);
}



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


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


static String _computerID;
static 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) {
      // legacy load
      _computerID = loadTextFile(userDir(".tinybrain/computer-id"));
      if (_computerID == null)
        _computerID = makeRandomID(12, new SecureRandom());
      saveTextFile(file, _computerID);
    }
  } finally { unlock(__0); } }
  return _computerID;
}


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



static <A> A _registerIOWrap(A wrapper, Object wrapped) {
  return wrapper;
}


static boolean endsWith(String a, String b) {
  return a != null && a.endsWith(b);
}

static boolean endsWith(String a, char c) {
  return nempty(a) && lastChar(a) == c;
}


  static 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 x30_pkg.x30_util.BetterThreadLocal<Runnable> newPing_actionTL;

static x30_pkg.x30_util.BetterThreadLocal<Runnable> newPing_actionTL() {
  if (newPing_actionTL == null)
    newPing_actionTL = vm_generalMap_getOrCreate("newPing_actionTL",
      () -> {
        Runnable value =  (Runnable) (callF_gen(vm_generalMap_get("newPing_valueForNewThread")));
        var tl = new x30_pkg.x30_util.BetterThreadLocal<Runnable>();
        tl.set(value);
        return tl;
      });
  return newPing_actionTL;
}



static <A, B> Map<A, B> syncMRUCache(int size) {
  return synchroMap(new MRUCache(size));
}


static 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) {
      // TODO: varargs
      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);
      
    // try varargs
    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 volatile String caseID_caseID;

static String caseID() { return caseID_caseID; }

static void caseID(String id) {
  caseID_caseID = id;
}


static HashMap<String, List<Method>> callMC_cache = new HashMap();
static String callMC_key;
static Method callMC_value;

// varargs assignment fixer for a single string array argument
static Object callMC(String method, String[] arg) {
  return callMC(method, new Object[] {arg});
}

static Object callMC(String method, Object... args) { try {
  Method me;
  if (callMC_cache == null) callMC_cache = new HashMap(); // initializer time workaround
  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 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 <A> A assertNotNull(A a) {
  assertTrue(a != null);
  return a;
}

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


static <A> A assertNotNull(Scorer scorer, String msg, A a) {
  if (scorer == null) return assertNotNull(msg, a);
  if (a == null) {
    print("BAD - " + msg + " is null: " + a);
    scorer.add(false);
  } else {
    print("OK, " + msg + " not null: " + a);
    scorer.add(true);
  }
  return a;
}



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


static Throwable _storeException_value;

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




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


static String standardTimeZone_name = "Europe/Berlin";

static String standardTimeZone() {
  return standardTimeZone_name;
}


static Lock appendToFile_lock = lock();
static boolean appendToFile_keepOpen = false;
static HashMap<String, Writer> appendToFile_writers = new HashMap();

static void appendToFile(String path, String s) { try {
  Lock __0 = appendToFile_lock; lock(__0); try { // Let's just generally synchronize this to be safe.
  mkdirsForFile(new File(path));
  path = getCanonicalPath(path);
  Writer writer = appendToFile_writers.get(path);
  if (writer == null) {
    //print("[Logging to " + path + "]");
    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 void appendToFile(File path, String s) {
  if (path != null)
    appendToFile(path.getPath(), s);
}

static void cleanMeUp_appendToFile() {
   AutoCloseable __3 = tempCleaningUp(); try {
  Lock __1 = appendToFile_lock; lock(__1); try {
  closeAllWriters(values(appendToFile_writers));
  appendToFile_writers.clear();
} finally { unlock(__1); } } finally { _close(__3); }}


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


static void consoleClearInput() {
  consoleSetInput("");
}


static Random defaultRandomGenerator() {
  { Random r = customRandomizerForThisThread(); if (r != null) return r; }
  return ThreadLocalRandom.current();
}


static <A> List<A> antiFilter(Iterable<A> c, Object pred) {
  if (pred instanceof F1) return antiFilter(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 List antiFilter(Object pred, Iterable c) {
  return antiFilter(c, pred);
}

static List antiFilter(Object pred, Object[] c) {
  return antiFilter(pred, wrapArrayAsList(c));
}

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

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

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

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



static <A> List<A> replace(List<A> l, A a, A b) {
  for (int i = 0; i < l(l); i++)
    if (eq(l.get(i), a))
      l.set(i, b);
  return l;
}

static <A> List<A> replace(A a, A b, List<A> l) {
  return replace(l, a, b);
}

// replace all occurrences of a in s with b
static String replace(String s, String a, String b) {
  return s == null ? null : a == null || b == null ? s : s.replace(a, b);
}

static String replace(String s, char a, char b) {
  return s == null ? null : s.replace(a, b);
}


static Lock downloadLock_lock = fairLock();

static Lock downloadLock() {
  return downloadLock_lock;
}


static void lock(Lock lock) { try {
  ping();
  if (lock == null) return;
  try {
    vmBus_send("locking", lock, "thread" , currentThread());
    lock.lockInterruptibly();
    vmBus_send("locked", lock, "thread" , currentThread());
  } catch (InterruptedException e) {
    Object reason = vm_threadInterruptionReasonsMap().get(currentThread());
    print("Locking interrupted! Reason: " + strOr(reason, "Unknown"));
    printStackTrace(e);
    rethrow(e);
  }
  // NO call to ping here! Make sure lock is always released.
} catch (Exception __e) { throw rethrow(__e); } }

static void lock(Lock lock, String msg) {
  print("Locking: " + msg);
  lock(lock);
}

static void lock(Lock lock, String msg, long timeout) {
  print("Locking: " + msg);
  lockOrFail(lock, timeout);
}

static ReentrantLock lock() {
  return fairLock();
}


static String getSnippetTitleOpt(String s) {
  try {
    return isSnippetID(s) ? getSnippetTitle(s) : s;
  } catch (Throwable __e) { pcallFail(__e); }
  return s;
}


static void unlock(Lock lock, String msg) {
  if (lock == null) return;
  lock.unlock();
  vmBus_send("unlocked", lock, "thread" , currentThread());
  print("Unlocked: " + msg); // print afterwards to make sure the lock is always unlocked
}

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


static int indexOfNonDigit(String s) {
  int n = l(s);
  for (int i = 0; i < n; i++)
    if (!isDigit(s.charAt(i)))
      return i;
  return -1;
}


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


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


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


static Object defaultDefaultClassFinder() {
  return new F1<String, Class>() {
    public Class get(String name) {
      // Fix some buggy concepts files out there
      name = replacePrefix("main$main$", "main$", name);
      
      Class c = get2(name);
      
      return c;
    }
      
    Class get2(String name) {
      // special invocation to find main class irrelevant of name
      if (eq(name, "<main>")) return mc();
      
      { Class c = findClass_fullName(name); if (c != null) return c; }
      
      if (startsWithAny(name, "loadableUtils.utils$", "main$", mcDollar()))
        for (String pkg : ll("loadableUtils.utils$", mcDollar())) {
          String newName = pkg + afterDollar(name);
          
          { Class c = findClass_fullName(newName); if (c != null) return c; }
        }
      return null;
    }
  };
}


static String dropPrefixSuffix(String prefix, String s) { return dropPrefixSuffix(prefix, prefix, s); }
static String dropPrefixSuffix(String prefix, String suffix, String s) {
  return dropPrefix(prefix, dropSuffix(suffix, s));
}


static short shortFromBytes(byte[] a, int i) {
  return (short) (ubyteToInt(a[i]) << 8
    | ubyteToInt(a[i+1]));
}


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

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

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


static 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 long longFromBytes_bigEndian(byte[] a, int i) {
  return twoIntsToLong_bigEndian(
    intFromBytes_bigEndian(a, i),
    intFromBytes_bigEndian(a, i+4));
}


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


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


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

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


static String assertIsIdentifier(String s) {
  if (!isIdentifier(s))
    throw fail("Not an identifier: " + quote(s));
  return s;
}

static String assertIsIdentifier(String msg, String s) {
  if (!isIdentifier(s))
    throw fail(msg + " - Not an identifier: " + quote(s));
  return s;
}


// Use like this: renderVars(+x, +y)
// Or like this: renderVars("bla", +x, +y)
static String renderVars_str(Object... params) {
  List<String> l = new ArrayList();
  int i = 0;
  if (odd(l(params))) {
    l.add(strOrNull(first(params)));
    ++i;
  }
  for (; i+1 < l(params); i += 2)
    l.add(params[i] + "=" + params[i+1]);
  return trim(joinWithComma(l));
}


static Class getOuterClass(Class c) { return getOuterClass(c, null); }
static Class getOuterClass(Class c, Object classFinder) { try {
  String s = c.getName();
  int i = s.lastIndexOf('$');
  String name = substring(s, 0, i);
  return classForName(name, classFinder);
} catch (Exception __e) { throw rethrow(__e); } }

static Class getOuterClass(Object o) { return getOuterClass(o, null); }
static Class getOuterClass(Object o, Object classFinder) {
  return getOuterClass(_getClass(o), classFinder);
}




// TODO: convert to regularly cleared normal map
static Map<Class, Constructor[]> getDeclaredConstructors_cached_cache = newDangerousWeakHashMap();

static Constructor[] getDeclaredConstructors_cached(Class c) {
  Constructor[] ctors;
  synchronized(getDeclaredConstructors_cached_cache) {
    ctors = getDeclaredConstructors_cached_cache.get(c);
    if (ctors == null) {
      getDeclaredConstructors_cached_cache.put(c, ctors = c.getDeclaredConstructors());
      for (var ctor : ctors)
        makeAccessible(ctor);
    }
  }
  return ctors;
}


static HashMap<String, Field> instanceFieldsMap(Object o) {
  return (HashMap) getOpt_getFieldMap(o);
}



static void smartSet(Field f, Object o, Object value) throws Exception {
  try {
    f.set(o, value);
  } catch (Exception e) {
    Class type = f.getType();
    
    // take care of common case (long to int)
    if (type == int.class && value instanceof Long)
      { f.set(o, ((Long) value).intValue()); return; }
      
    if (type == boolean.class && value instanceof String)
      { f.set(o, isTrueOrYes(((String) value))); return; }
    
    if (type == LinkedHashMap.class && value instanceof Map)
      { f.set(o, asLinkedHashMap((Map) value)); return; }
    
    
    throw e;
  }
}


static 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 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); // in class init
  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;
    }
    
    // It's probably a subclass of Map. Use raw method. TODO: huh?
    setOpt_raw(o, field, value);
    return;
  }
  
  Field f = map.get(field);
  
  if (f != null)
    { smartSet(f, o, value); return; } // possible improvement: skip setAccessible
  
    if (o instanceof DynamicObject)
      { setDyn(((DynamicObject) o), field, value); return; }
  
  if (o instanceof IMeta)
    setDyn(((IMeta) o), field, value);
} catch (Exception __e) { throw rethrow(__e); } }

static void setOpt(Class c, String field, Object value) {
  if (c == null) return;
  try {
    Field f = setOpt_findStaticField(c, field); // TODO: optimize
    if (f != null)
      smartSet(f, null, value);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}
  
static 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 void warnIfOddCount(Object... list) {
  if (odd(l(list)))
    printStackTrace("Odd list size: " + list);
}




static Map<Class, Field[]> thisDollarOneFields_cache = newDangerousWeakHashMap();

static 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 Field[] thisDollarOneFields_uncached(Class c) {
  List<Field> fields = new ArrayList();
  do {
    for (Field f : c.getDeclaredFields())
      if (f.getName().startsWith("this$"))
        fields.add(makeAccessible(f));
    c = c.getSuperclass();
  } while (c != null);
  return toArray(new Field[l(fields)], fields);
}




static Method fastIntern_method;

static 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 Map<Class, HashMap<String, Method>> callOpt_noArgs_cache = newDangerousWeakHashMap();

static Object callOpt_noArgs(Object o, String method) { try {
  if (o == null) return null;
  if (o instanceof Class)
    return callOpt(o, method); // not optimized
  
  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); } }

// used internally - we are in synchronized block
static 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 <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 TreeSet<String> caseInsensitiveSet() {
  return caseInsensitiveSet_treeSet();
}

static TreeSet<String> caseInsensitiveSet(Collection<String> c) {
  return caseInsensitiveSet_treeSet(c);
}


static Map<String, Class> classForName_cache = synchroHashMap();

static Class classForName(String name) { return classForName(name, null); }
static Class classForName(String name, Object classFinder) {
  // first clause is when we're in class init
  if (classForName_cache == null || classFinder != null)
    return classForName_uncached(name, classFinder);
  Class c = classForName_cache.get(name);
  if (c == null)
    classForName_cache.put(name, c = classForName_uncached(name, null));
  return c;
}

static Class classForName_uncached(String name, Object classFinder) { try {
  if (classFinder != null) return (Class) callF(classFinder, name);
  return Class.forName(name);
} catch (Exception __e) { throw rethrow(__e); } }


static Map<Class, Constructor> nuObjectWithoutArguments_cache = newDangerousWeakHashMap();

static Object nuObjectWithoutArguments(String className) { try {
  return nuObjectWithoutArguments(classForName(className));
} catch (Exception __e) { throw rethrow(__e); } }

static <A> A nuObjectWithoutArguments(Class<A> c) { try {
  if (nuObjectWithoutArguments_cache == null)
    // in class init
    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 Constructor nuObjectWithoutArguments_findConstructor(Class c) {
  for (Constructor m : getDeclaredConstructors_cached(c))
    if (empty(m.getParameterTypes())) {
      makeAccessible(m);
      return m;
    }
  throw fail("No default constructor found in " + c.getName());
}



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


static <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 <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 <A> AutoCloseable tempSetThreadLocalIfNecessary(ThreadLocal<A> tl, A a) {
  if (tl == null) return null;
  A prev = tl.get();
  if (eq(prev, a)) return null;
  tl.set(a);
  return new AutoCloseable() { public String toString() { return "tl.set(prev);"; } public void close() throws Exception { tl.set(prev); }};
}


static <A> AutoCloseable tempSetThreadLocalIfNecessary(BetterThreadLocal<A> tl, A a) {
  if (tl == null) return null;
  A prev = tl.get();
  if (eq(prev, a)) return null;
  tl.set(a);
  return new AutoCloseable() { public String toString() { return "tl.set(prev);"; } public void close() throws Exception { tl.set(prev); }};
}



static Class<?> getClass(String name) {
  return _getClass(name);
}

static Class getClass(Object o) {
  return _getClass(o);
}

static Class getClass(Object realm, String name) {
  return _getClass(realm, name);
}


static 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 event executingSwingCode(Runnable code);

static transient Set<IVF1<Runnable>> onExecutingSwingCode;
public static void onExecutingSwingCode(IVF1<Runnable> f) { onExecutingSwingCode = createOrAddToSyncLinkedHashSet(onExecutingSwingCode, f); }
public static void removeExecutingSwingCodeListener(IVF1<Runnable> f) { main.remove(onExecutingSwingCode, f); }
public static void executingSwingCode(Runnable code) {  if (onExecutingSwingCode != null) for (var listener : onExecutingSwingCode) pcallF_typed(listener, code); }


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


static byte[] emptyByteArray_a = new byte[0];
static byte[] emptyByteArray() { return emptyByteArray_a; }


static short[] emptyShortArray = new short[0];
static short[] emptyShortArray() { return emptyShortArray; }


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


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


// Note: This is actually broken. Inner classes must stay with a $ separator
static String classNameToVM(String name) {
  return name.replace(".", "$");
}


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


static <A> int indexOfSubList(List<A> x, List<A> y) {
  return indexOfSubList(x, y, 0);
}

static <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 <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 void removeSubList(List l, int from, int to) {
  if (l != null) subList(l, from, to).clear();
}

static void removeSubList(List l, int from) {
  if (l != null) subList(l, from).clear();
}


static <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 boolean methodIsStatic(Method m) {
  return (m.getModifiers() & Modifier.STATIC) != 0;
}


static boolean argumentCompatibleWithType(Object arg, Class type) {
  return arg == null ? !type.isPrimitive() : isInstanceX(type, arg);
}


static void arraycopy(Object[] a, Object[] b) {
  if (a != null && b != null)
    arraycopy(a, 0, b, 0, Math.min(a.length, b.length));
}

static void arraycopy(Object src, int srcPos, int destPos, int n) { arraycopy(src, srcPos, src, destPos, n); }
static void arraycopy(Object src, int srcPos, Object dest, int destPos, int n) {
  if (n != 0)
    System.arraycopy(src, srcPos, dest, destPos, n);
}


static <A> String joinWithComma(Iterable<A> c) {
  return join(", ", c);
}

static String joinWithComma(Object... c) {
  return join(", ", c);
}

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


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




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

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

// map: func(key, value) -> list element
static List map(Map map, Object f) {
  List x = new ArrayList();
  if (map != null) for  (Object _e : map.entrySet()) { ping(); 
    Map.Entry e = (Map.Entry) _e;
    x.add(callF(f, e.getKey(), e.getValue()));
  }
  return x;
}

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

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




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

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


static <A, B> List<B> map(IF1<A, B> f, Iterable<A> l) { return map(l, f); }
static <A, B> List<B> map(Iterable<A> l, IF1<A, B> f) {
  List x = emptyList(l);
  if (l != null) {
    var it = l.iterator();
    if (it.hasNext()) {
      var pingSource = pingSource();
      do {
        ping(pingSource);
        x.add(f.get(it.next()));
      } while (it.hasNext());
    }
  }
  return x;
}
  
static <A, B> List<B> map(IF1<A, B> f, A[] l) { return map(l, f); }
static <A, B> List<B> map(A[] l, IF1<A, B> f) {
  List x = emptyList(l);
  if (l != null) for  (A o : l)
    { ping(); x.add(f.get(o)); }
  return x;
}
  
static <A, B, C> List<C> map(Map<A, B> map, IF2<A, B, C> f) {
  List x = new ArrayList();
  if (map != null) for  (Map.Entry<A, B> e : map.entrySet()) { ping(); 
    x.add(f.get(e.getKey(), e.getValue()));
  }
  return x;
}

// new magic alias for mapLL - does it conflict?

static <A, B> List<A> map(IF1<A, B> f, A data1, A... moreData) {
  List x = emptyList(l(moreData)+1);
  x.add(f.get(data1));
  if (moreData != null) for  (A o : moreData)
    { ping(); x.add(f.get(o)); }
  return x;
}


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

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


// This is made for NL parsing.
// It's javaTok extended with "..." token, "$n" and "#n" and
// special quotes (which are converted to normal ones).

static 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;
    
    // scan for whitespace
    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));

    // scan for non-whitespace
    if (c == (char) 0x201C || c == (char) 0x201D) c = '"'; // normalize quotes
    if (c == '\'' || c == '"') {
      char opener = c;
      ++j;
      while (j < l) {
        char _c = s.charAt(j);
        if (_c == (char) 0x201C || _c == (char) 0x201D) _c = '"'; // normalize quotes
        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) == '\'')); // for things like "this one's"
    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 char lastChar(String s) {
  return empty(s) ? '\0' : s.charAt(l(s)-1);
}




static Rect toRect(Rectangle r) {
  return r == null ? null : new Rect(r);
}

static Rect toRect(RectangularShape r) {
  return r == null ? null : toRect(r.getBounds());
}



static Rect toRect(Rect r) { return r; }




static <A> A vm_generalMap_getOrCreate(Object key, F0<A> create) {
  return vm_generalMap_getOrCreate(key, f0ToIF0(create));
}

static <A> A vm_generalMap_getOrCreate(Object key, IF0<A> create) {
  Map generalMap = vm_generalMap();
  if (generalMap == null) return null; // must be x30 init
  
  synchronized(generalMap) { // should switch to locks here
    A a =  (A) (vm_generalMap_get(key));
    if (a == null)
      vm_generalMap_put(key, a = create == null ? null : create.get());
    return a;
  }
}



static <A extends Throwable> A printException(A e) {
  printStackTrace(e);
  return e;
}


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


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



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


static Map synchronizedMap() {
  return synchroMap();
}

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


static <A> A[] dropLast(A[] a) { return dropLast(a, 1); }
static <A> A[] dropLast(A[] a, int n) {
  if (a == null) return null;
  n = Math.min(n, a.length);
  A[] b = arrayOfSameType(a, a.length-n);
  System.arraycopy(a, 0, b, 0, b.length);
  return b;
}

static <A> List<A> dropLast(List<A> l) {
  return subList(l, 0, l(l)-1);
}

static <A> List<A> dropLast(int n, List<A> l) {
  return subList(l, 0, l(l)-n);
}

static <A> List<A> dropLast(Iterable<A> l) {
  return dropLast(asList(l));
}

static String dropLast(String s) {
  return substring(s, 0, l(s)-1);
}

static String dropLast(String s, int n) {
  return substring(s, 0, l(s)-n);
}

static String dropLast(int n, String s) {
  return dropLast(s, n);
}




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



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



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



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


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




  static <A, B, C> C callF_gen(IF2<A, B, C> f, A a, B b) {
    return f == null ? null : f.get(a, b);
  }



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


static <A> void callF_gen(A a, IVF1<A> f) {
  { if (f != null) f.get(a); }
}

static <A> void callF_gen(IVF1<A> f, A a) {
  { if (f != null) f.get(a); }
}

static Object callF_gen(Runnable r) { { if (r != null) r.run(); } return null; }

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


static <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 <A, B> void multiMapPut(MultiMap<A, B> mm, A key, B value) {
  if (mm != null && key != null && value != null) mm.put(key, value);
}



static String getCanonicalPath(File f) { try {
  return f == null ? null : f.getCanonicalPath();
} catch (Exception __e) { throw rethrow(__e); } }

static String getCanonicalPath(String path) {
  return getCanonicalPath(newFile(path));
}


static AutoCloseable tempCleaningUp() {
  AutoCloseable result = null;
  
  
  result = tempSetTL(ping_isCleanUpThread, true);
  
  
  return result;
}


static void closeAllWriters(Collection<? extends Writer> l) {
  for (Writer w : unnull(l)) { try {
    w.close();
  } catch (Throwable __e) { pcallFail(__e); }}
}


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

// convenience shortcut for values_gen
static Collection values(Object map) {
  return values((Map) map);
}


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





static Class hotwireOnce(String programID) {
  return hotwireCached(programID, false);
}


static void consoleSetInput(final String text) {
  
    if (headless()) return;
    setTextAndSelectAll(consoleInputField(), text);
    focusConsole();
  
}


static Random customRandomizerForThisThread() {
  return customRandomizerForThisThread_tl().get();
}


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


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


static Map<Thread, Object> vm_threadInterruptionReasonsMap() {
  return vm_generalWeakSubMap("Thread interruption reasons");
}


static String strOr(Object o, String ifNull) {
  return o == null ? ifNull : str(o);
}


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


static String getSnippetTitle(String id) {
  if (id == null) return null;
  if (!isSnippetID(id)) return "?";
  
  
  IResourceLoader rl = vm_getResourceLoader();
  if (rl != null)
    return rl.getSnippetTitle(id);
  
  
  return getSnippetTitle_noResourceLoader(id);
}
  
static String getSnippetTitle_noResourceLoader(String id) { try {
  if (isLocalSnippetID(id)) return localSnippetTitle(id);
  long parsedID = parseSnippetID(id);
  String url;
  if (isImageServerSnippet(parsedID))
    url = imageServerURL() + "title/" + parsedID + muricaCredentialsQuery();
  else if (isGeneralFileServerSnippet(parsedID))
    url = "http://butter.botcompany.de:8080/files/name/" + parsedID;
  else
    url = tb_mainServer() + "/tb-int/getfield.php?id=" + parsedID + "&field=title" + standardCredentials_noCookies();
  String title = trim(loadPageSilently(url));
  if (title != null)
    try { saveTextFileIfChanged(snippetTitle_cacheFile(id), title); } catch (Throwable __e) { print(exceptionToStringShort(__e)); }
  return or(title, "?");
} catch (Exception __e) { throw rethrow(__e); } }

static String getSnippetTitle(long id) {
  return getSnippetTitle(fsI(id));
}



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


static int lastIndexOf(String a, String b) {
  return a == null || b == null ? -1 : a.lastIndexOf(b);
}

static int lastIndexOf(String a, char b) {
  return a == null ? -1 : a.lastIndexOf(b);
}

// starts searching from i-1
static <A> int lastIndexOf(List<A> l, int i, A a) {
  if (l == null) return -1;
  for (i = min(l(l), i)-1; i >= 0; i--)
    if (eq(l.get(i), a))
      return i;
  return -1;
}

static <A> int lastIndexOf(List<A> l, A a) {
  if (l == null) return -1;
  for (int i = l(l)-1; i >= 0; i--)
    if (eq(l.get(i), a))
      return i;
  return -1;
}


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


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


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


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

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


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



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


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


static int ubyteToInt(byte b) {
  return b & 0x0FF;
}

static int ubyteToInt(char c) {
  return c & 0x0FF;
}


static int charDiff(char a, char b) {
  return (int) a-(int) b;
}

static int charDiff(String a, char b) {
  return charDiff(stringToChar(a), b);
}


static long twoIntsToLong_bigEndian(int a, int b) {
  return twoIntsToLong(a, b);
}


static int intFromBytes_bigEndian(byte[] a, int i) {
  return intFromBytes(a, i);
}


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


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


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


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


static <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;
}


// TODO: optimize (use getOpt_cache)
static 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 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 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 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 <A extends DynamicObject> A setDyn(A o, String key, Object value) {
  setDynObjectValue(o, key, value);
  return o;
}

static void setDyn(IMeta o, String key, Object value) {
  metaMapPut(o, key, value);
}


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

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

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

static <A> A[] toArray(Collection<A> c, Class<A> type) {
  A[] a = arrayOfType(l(c), type);
  if (a.length == 0) return a;
  asList(c).toArray(a);
  return a;
}

static <A> A[] toArray(Iterable<A> c, Class<A> type) {
  var c2 = asList(c);
  A[] a = arrayOfType(l(c2), type);
  if (a.length == 0) return a;
  c2.toArray(a);
  return a;
}

// array must have correct length and will be filled
static <A> A[] toArray(A[] array, Collection c) {
  if (array == null || c == null) return null;
  asList(c).toArray(array);
  return array;
}


// This is a bit rough... finds static and non-static methods.

static 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 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 void upgradeJavaXAndRestart() {
  
    run("#1001639");
    restart();
    sleep();
  
  
}


static boolean reflection_isForbiddenMethod(Method m) {
  return m.getDeclaringClass() == Object.class
    && eqOneOf(m.getName(), "finalize", "clone", "registerNatives");
}


static TreeSet<String> caseInsensitiveSet_treeSet() {
  return new TreeSet(caseInsensitiveComparator());
}

static TreeSet<String> caseInsensitiveSet_treeSet(Collection<String> c) {
  return toCaseInsensitiveSet_treeSet(c);
}


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

static <A> List<A> cloneSubList(List<A> l, int startIndex) {
  return newSubList(l, startIndex);
}


static Runnable asRunnable(Object o) {
  return toRunnable(o);
}




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


static <A> Set<A> createOrAddToSyncLinkedHashSet(Set<A> set, A a) {
  if (set == null) set = syncLinkedHashSet();
  set.add(a);
  return set;
}


static <A> void remove(List<A> l, int i) {
  if (l != null && i >= 0 && i < l(l))
    l.remove(i);
}

static <A> void remove(Collection<A> l, A a) {
  if (l != null) l.remove(a);
}

static <A, B> B remove(Map<A, B> map, Object a) {
  return map == null ? null : map.remove(a);
}

static void remove(BitSet bs, int i) {
  bs.clear(i);
}



static <A> A pcallF_typed(F0<A> f) {
  try { return f == null ? null : f.get(); } catch (Throwable __e) { pcallFail(__e); } return null;
}



static <A, B> B pcallF_typed(F1<A, B> f, A a) {
  try { return f == null ? null : f.get(a); } catch (Throwable __e) { pcallFail(__e); } return null;
}



static <A> void pcallF_typed(VF1<A> f, A a) {
  try {
    { if (f != null) f.get(a); }
  } catch (Throwable __e) { pcallFail(__e); }
}


static <A> void pcallF_typed(IVF1<A> f, A a) {
  try {
    { if (f != null) f.get(a); }
  } catch (Throwable __e) { pcallFail(__e); }
}

static <A, B> void pcallF_typed(IVF2<A, B> f, A a, B b) {
  try {
    { if (f != null) f.get(a, b); }
  } catch (Throwable __e) { pcallFail(__e); }
}

static Object pcallF_typed(Runnable r) {
  try { { if (r != null) r.run(); } } catch (Throwable __e) { pcallFail(__e); } return null;
}

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

static <A, B> B pcallF_typed(IF1<A, B> f, A a) {
  try { return f == null ? null : f.get(a); } catch (Throwable __e) { pcallFail(__e); } return null;
}



// assumptions:
// -pingSource() stays constant within a stack frame (so you can cache it)
// -all changes happen with tempSetPingSource
// -multiple threads can share a PingSource
static PingSource pingSource() {
  return pingSource_tl().get();
}

static PingSource pingSource(Thread thread) {
  return pingSource_tl().get(thread);
}


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


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


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





static <A> IF0<A> f0ToIF0(F0<A> f) {
  return f == null ? null : () -> f.get();
}


static boolean endsWithIgnoreCase(String a, String b) {
  int la = l(a), lb = l(b);
  return la >= lb && regionMatchesIC(a, la-lb, b, 0, lb);
}


static boolean endsWithIgnoreCase(String a, String b, Matches m) {
  if (!endsWithIgnoreCase(a, b)) return false;
  if (m != null)
    m.m = new String[] { substring(a, 0, l(a)-l(b)) };
  return true;
}



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


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

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



static TreeMap<String, Class> hotwireCached_cache = new TreeMap();
static Lock hotwireCached_lock = lock();

static Class hotwireCached(String programID) {
  return hotwireCached(programID, true);
}

static Class hotwireCached(String programID, boolean runMain) {
  return hotwireCached(programID, runMain, false);
}

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


static JTextField setTextAndSelectAll(final JTextField tf, final String text) {
  if (tf != null) { swing(() -> { 
    tf.setText(text);
    tf.selectAll();
  }); }
  return tf;
}


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


static void focusConsole(String s) {
  setConsoleInput(s);
  focusConsole();
}

static void focusConsole() {
  JComponent tf = consoleInputFieldOrComboBox();
  if (tf != null) {
    //print("Focusing console");
    tf.requestFocus();
  }
}


static ThreadLocal<Random> customRandomizerForThisThread_tl = new ThreadLocal();

static ThreadLocal<Random> customRandomizerForThisThread_tl() {
  return customRandomizerForThisThread_tl;
}


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


static String imageServerURL() {
  return or2(trim(loadTextFile(javaxDataDir("image-server-url.txt"))), "http://botcompany.de/images/raw/");
}


static String muricaCredentialsQuery() {
  return htmlQuery(muricaCredentials());
}


static boolean isGeneralFileServerSnippet(long id) {
  return id >= 1400000 && id < 1500000;
}


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


static boolean saveTextFileIfChanged(File f, String contents) {
  return saveTextFileIfDifferent(f, contents);
}


static File snippetTitle_cacheFile(String snippetID) {
  return javaxCachesDir("Snippet Titles/" + psI(snippetID));
}


static ThreadLocal realMC_tl_tl = new ThreadLocal();

static ThreadLocal realMC_tl() {
  return realMC_tl_tl;
}


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


// returns l(s) if not found
static 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 int smartIndexOf(String s, int i, char c) {
  return smartIndexOf(s, c, i);
}

static 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 int smartIndexOf(String s, String sub) {
  return smartIndexOf(s, sub, 0);
}

static int smartIndexOf(String s, char c) {
  return smartIndexOf(s, c, 0);
}

static <A> int smartIndexOf(List<A> l, A sub) {
  return smartIndexOf(l, sub, 0);
}

static <A> int smartIndexOf(List<A> l, int start, A sub) {
  return smartIndexOf(l, sub, start);
}

static <A> int smartIndexOf(List<A> l, A sub, int start) {
  int i = indexOf(l, sub, start);
  return i < 0 ? l(l) : i;
}


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


static long twoIntsToLong(int a, int b) {
  return (((long) a) << 32) | (((long) b) & 0xFFFFFFFFL);
}


static int intFromBytes(byte[] a, int i) {
  return ubyteToInt(a[i]) << 24
    | ubyteToInt(a[i+1]) << 16
    | ubyteToInt(a[i+2]) << 8
    | ubyteToInt(a[i+3]);
}


static betterCIComparator_C betterCIComparator_instance;

static betterCIComparator_C betterCIComparator() {
  if (betterCIComparator_instance == null)
    betterCIComparator_instance = new betterCIComparator_C();
  return betterCIComparator_instance;
}

final static 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) {
                    // No overflow because of numeric promotion
                    return c1 - c2;
                }
            }
        }
    }
    return n1 - n2;
  }
}


static BufferedReader utf8BufferedReader(InputStream in) {
  return utf8bufferedReader(in);
}

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


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

static boolean isTrueOpt(String field, Object o) {
  return isTrueOpt(getOpt(field, o));
}


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


static List<String> isYes_yesses = litlist("y", "yes", "yeah", "y", "yup", "yo", "corect", "sure", "ok", "afirmative"); // << collapsed words, so "corect" means "correct"

static boolean isYes(String s) {
  return isYes_yesses.contains(collapseWord(toLowerCase(firstWord2(s))));
}


static void metaMapPut(IMeta o, Object key, Object value) {
  { if (o != null) o.metaPut(key, value); }
}

static void metaMapPut(Object o, Object key, Object value) {
  var meta = initIMeta(o);
  { if (meta != null) meta.metaPut(key, value); }
}


// binary legacy signature
static Object[] toObjectArray(Collection c) {
  return toObjectArray((Iterable) c);
}

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



static <A> A[] arrayOfType(Class<A> type, int n) {
  return makeArray(type, n);
}

static <A> A[] arrayOfType(int n, Class<A> type) {
  return arrayOfType(type, n);
}


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


static TreeSet<String> toCaseInsensitiveSet_treeSet(Iterable<String> c) {
  if (isCISet(c)) return (TreeSet) c;
  TreeSet<String> set = caseInsensitiveSet_treeSet();
  addAll(set, c);
  return set;
}

static TreeSet<String> toCaseInsensitiveSet_treeSet(String... x) {
  TreeSet<String> set = caseInsensitiveSet_treeSet();
  addAll(set, x);
  return set;
}


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

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


static <A> Set<A> syncLinkedHashSet() {
  return synchroLinkedHashSet();
}




static BetterThreadLocal<PingSource> pingSource_tl_var = new BetterThreadLocal<PingSource>() {
  @Override
  public PingSource initialValue() {
    return ping_v3_pingSourceMaker().get(); 
  }
};

static BetterThreadLocal<PingSource> pingSource_tl() {
  return pingSource_tl_var;
}


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




static <A> A[] newObjectArrayOfSameType(A[] a) { return newObjectArrayOfSameType(a, a.length); }
static <A> A[] newObjectArrayOfSameType(A[] a, int n) {
  return (A[]) Array.newInstance(a.getClass().getComponentType(), n);
}


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

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



static <A, B> Map<A, B> addAll(Map<A, B> a, Map<? extends A,? extends B> b) {
  if (a != null && b != null) a.putAll(b);
  return a;
}

static <A extends Container> A addAll(A c, Collection<? extends Component> components) {
  return addComponents(c, components);
}

static <A extends Container> A addAll(A c, Component... components) {
  return addComponents(c, components);
}


// custom mainClass only works with hotwire_here
static Class<?> hotwire(String src) { return hotwire(src, __1 -> mainClassNameForClassLoader(__1)); }
static Class<?> hotwire(String src, IF1<ClassLoader, String> calculateMainClass) {
  assertFalse(_inCore());
  Class j = getJavaX();
  if (isAndroid()) {
    synchronized(j) { // hopefully this goes well...
      List<File> libraries = new ArrayList<File>();
      File srcDir = (File) call(j, "transpileMain", src, libraries);
      if (srcDir == null)
        throw fail("transpileMain returned null (src=" + quote(src) + ")");
    
      Object androidContext = get(j, "androidContext");
      return (Class) call(j, "loadx2android", srcDir, src);
    }
  } else {
    
    
    Class c =  (Class) (call(j, "hotwire", src));
    hotwire_copyOver(c);
    return c;
    
  }
}


static Object makeDependent_postProcess;

static void makeDependent(Object c) {
  if (c == null) return;
  assertTrue("Not a class", c instanceof Class);
  dependentClasses(); // cleans up the list
  hotwire_classes.add(new WeakReference(c));
  
  Object local_log = getOpt(mc(), "local_log");
  if (local_log != null)
    setOpt(c, "local_log", local_log);
    
  /*if (isTrue(getOpt(c, 'ping_actions_shareable)))
    setOpt(c, +ping_actions);*/
    
  Object print_byThread = getOpt(mc(), "print_byThread");
  if (print_byThread != null)
    setOpt(c, "print_byThread", print_byThread);
    
  callF(makeDependent_postProcess, c);
}



static <A> A callMain(A c, String... args) {
  callOpt(c, "main", new Object[] {args});
  return c;
}

static void callMain() {
  callMain(mc());
}


static void setConsoleInput(String text) {
  consoleSetInput(text);
}


static JComponent consoleInputFieldOrComboBox() {
  Object console = get(getJavaX(), "console");
  JComboBox cb =  (JComboBox) (getOpt(console, "cbInput"));
  if (cb != null) return cb;
  return (JTextField) getOpt(console, "tfInput");
}


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

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


static String getFileInfoField(File f, String field) {
  return getOneLineFileInfoField(f, field);
}


static File dropExtension(File f) {
  return f == null ? null : fileInSameDir(f, dropExtension(f.getName()));
}

static String dropExtension(String s) {
  return takeFirst(s, smartLastIndexOf(s, '.'));
}


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

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


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


static boolean saveTextFileIfDifferent(File f, String contents) {
  if (eq(loadTextFile(f), contents)) return false; // TODO: optimize
  { saveTextFile(f, contents); return true; }
}


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


static BufferedReader utf8bufferedReader(InputStream in) { try {
  return in == null ? null : bufferedReader(_registerIOWrap(new InputStreamReader(in, "UTF-8"), in));
} catch (Exception __e) { throw rethrow(__e); } }

static BufferedReader utf8bufferedReader(File f) { try {
  return utf8bufferedReader(newFileInputStream(f));
} catch (Exception __e) { throw rethrow(__e); } }


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

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

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


static String firstWord2(String s) {
  s = xltrim(s);
  if (empty(s)) return "";
  if (isLetterOrDigit(first(s)))
    return takeCharsWhile(__27 -> isLetterOrDigit(__27), s);
  else return "" + first(s);
}


static IMeta initIMeta(Object o) {
  if (o == null) return null;
  if (o instanceof IMeta) return ((IMeta) o);
  if (o instanceof JComponent) return initMetaOfJComponent((JComponent) o);
  
  // This is not really used. Try to use BufferedImageWithMeta instead
  if (o instanceof BufferedImage) return optCast(IMeta.class, ((BufferedImage) o).getProperty("meta"));
  return null;
}


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


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


// BREAKING CHANGE!
// Also NOTE: Iterators of these sync-wrapped collections
// after generally NOT thread-safe!
// TODO: change that?
static <A> Set<A> synchroLinkedHashSet() {
  
  
  return synchronizedSet(new CompactLinkedHashSet());
  
}


static IF0<PingSource> ping_v3_pingSourceMaker_cache;
static IF0<PingSource> ping_v3_pingSourceMaker() { if (ping_v3_pingSourceMaker_cache == null) ping_v3_pingSourceMaker_cache = ping_v3_pingSourceMaker_load(); return ping_v3_pingSourceMaker_cache;}

static IF0<PingSource> ping_v3_pingSourceMaker_load() {
  return or((IF0) vm_generalMap_get("ping_v3_pingSourceMaker"), () -> null);
}





static <A extends Container> A addComponents(A c, Collection<? extends Component> components) {
  if (nempty(components)) { swing(() -> { 
    for (Component comp : components)
      if (comp != null)
        c.add(comp);
    revalidate(c);
  }); }
  return c;
}

static <A extends Container> A addComponents(A c, Component... components) {
  return addComponents(c, asList(components));
}


static boolean _inCore() {
  return false;
}


static List hotwire_copyOver_after = synchroList();

static void hotwire_copyOver(Class c) {
  // TODO: make a mechanism for making such "inheritable" fields
  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 List<Class> dependentClasses() {
  return cleanUpAndGetWeakReferencesList(hotwire_classes);
}


static String getOneLineFileInfoField(File f, String field) {
  File infoFile = associatedInfosFile(f);
  List<String> lines = lines(loadTextFile(infoFile));
  return firstStartingWithIC_drop(lines, field + ": ");
}


static File fileInSameDir(File f, String newName) {
  return newFile(parentFile(f), newName);
}


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

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

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

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

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

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

static <A> List<A> takeFirst(int n, IterableIterator<A> i) {
  return takeFirst(n, (Iterator<A>) i);
}

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

static short[] takeFirst(int n, short[] a) { return takeFirstOfShortArray(n, a); }

static byte[] takeFirst(int n, byte[] a) { return takeFirstOfByteArray(n, a); }
static byte[] takeFirst(byte[] a, int n) { return takeFirstOfByteArray(n, a); }

static double[] takeFirst(int n, double[] a) { return takeFirstOfDoubleArray(n, a); }
static double[] takeFirst(double[] a, int n) { return takeFirstOfDoubleArray(n, a); }

static <A, B> Map<A, B> takeFirst(int n, Map<A, B> map) {
  return takeFirstFromMap(n, map);
}


static int smartLastIndexOf(String s, char c) {
  if (s == null) return 0;
  int i = s.lastIndexOf(c);
  return i >= 0 ? i : l(s);
}

static <A> int smartLastIndexOf(List<A> l, A sub) {
  int i = lastIndexOf(l, sub);
  return i < 0 ? l(l) : i;
}


static String makePostData(Map map) {
  StringBuilder buf = new StringBuilder();
  for (Map.Entry<Object, Object> e : castMapToMapO(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(/*escapeMultichars*/(value)));
    }
  }
  return str(buf);
}

static 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(/*escapeMultichars*/(value)));
    }
  }
  return str(buf);

}



static volatile boolean muricaPassword_pretendNotAuthed = false;

static String muricaPassword() {
  if (muricaPassword_pretendNotAuthed) return null;
  return trim(loadTextFile(muricaPasswordFile()));
}


static BufferedReader bufferedReader(Reader r) { return bufferedReader(r, 8192); }
static BufferedReader bufferedReader(Reader r, int bufSize) {
  if (r == null) return null;
  return r instanceof BufferedReader ? (BufferedReader) r : _registerIOWrap(new BufferedReader(r, bufSize), r);
}

static BufferedReader bufferedReader(File f) {
  return utf8bufferedReader(f);
}


static FileInputStream newFileInputStream(File path) throws IOException {
  return newFileInputStream(path.getPath());
}

static FileInputStream newFileInputStream(String path) throws IOException {
  FileInputStream f = new FileInputStream(path);
  _registerIO(f, path, true);
  return f;
}


static 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 String xltrim(String s) {
  int i = 0, n = l(s);
  while (i < n && contains(" \t\r\n", s.charAt(i)))
    ++i;
  return substr(s, i);
}


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


// pred: char -> bool
static String takeCharsWhile(String s, Object pred) {
  int i = 0;
  while (i < l(s) && isTrue(callF(pred, s.charAt(i)))) ++i;
  return substring(s, 0, i);
}

static String takeCharsWhile(IF1<Character, Boolean> f, String s) {
  return takeCharsWhile(s, f);
}


static IMeta initMetaOfJComponent(JComponent c) {
  if (c == null) return null;
  IMeta meta =  (IMeta) (c.getClientProperty(IMeta.class));
  if (meta == null)
    c.putClientProperty(IMeta.class, meta = new Meta());
  
  return meta;
}


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




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

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



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


static Object mainBot;

static Object getMainBot() {
  return mainBot;
}


static <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 File associatedInfosFile(File f) {
  return replaceExtension(f, ".infos");
}


static String lines(Iterable lines) { return fromLines(lines); }
static String lines(Object[] lines) { return fromLines(asList(lines)); }
static List<String> lines(String s) { return toLines(s); }

// convenience map call
static <A> String lines(Iterable<A> l, IF1<A, String> f) {
  return mapToLines(l, f);
}

static List<String> lines(File f) { return linesFromFile_list(f); }


static 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 String firstStartingWithIC_drop(String prefix, Collection<String> l) {
  return firstStartingWithIC_drop(l, prefix);
}


static File parentFile(File f) {
  return dirOfFile(f);
}


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

static <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 int[] takeFirstOfIntArray(int[] b, int n) {
  return subIntArray(b, 0, n);
}

static int[] takeFirstOfIntArray(int n, int[] b) {
  return takeFirstOfIntArray(b, n);
}


static short[] takeFirstOfShortArray(short[] b, int n) {
  return subShortArray(b, 0, n);
}

static short[] takeFirstOfShortArray(int n, short[] b) {
  return takeFirstOfShortArray(b, n);
}


static byte[] takeFirstOfByteArray(byte[] b, int n) {
  return subByteArray(b, 0, n);
}

static byte[] takeFirstOfByteArray(int n, byte[] b) {
  return takeFirstOfByteArray(b, n);
}


static double[] takeFirstOfDoubleArray(double[] b, int n) {
  return subDoubleArray(b, 0, n);
}

static double[] takeFirstOfDoubleArray(int n, double[] b) {
  return takeFirstOfDoubleArray(b, n);
}


static <A, B> Map<A, B> takeFirstFromMap(int n, Map<A, B> map) {
  if (map == null) return null;
  Map<A, B> map2 = similarEmptyMap(map);
  if (n > 0)
    for (Map.Entry<A, B> e : map.entrySet())
      if (n-- <= 0) break; else map2.put(e.getKey(), e.getValue());
  return map2;
}


static Map<Object, Object> castMapToMapO(Map map) {
  return map;
}


static File muricaPasswordFile() {
  return new File(javaxSecretDir(), "murica/muricaPasswordFile");
}


static String substr(String s, int x) {
  return substring(s, x);
}

static String substr(String s, int x, int y) {
  return substring(s, x, y);
}




static File replaceExtension(File f, String extOld, String extNew) {
  return newFile(replaceExtension(f2s(f), extOld, extNew));
}

static File replaceExtension(File f, String extNew) {
  return replaceExtension(f, fileExtension(f), extNew);
}

static String replaceExtension(String s, String extOld, String extNew) {
  s = dropSuffixIC(addPrefixOptIfNempty(".", extOld), s);
  return s + addPrefixOptIfNempty(".", extNew);
}

static String replaceExtension(String name, String extNew) {
  return replaceExtension(name, fileExtension(name), extNew);
}


// usually L<S>
static 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 String fromLines(String... lines) {
  return fromLines(asList(lines));
}


static IterableIterator<String> toLines(File f) {
  return linesFromFile(f);
}

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


static List<String> mapToLines(Map map) {
  List<String> l = new ArrayList();
  for (Object key : keys(map))
    l.add(str(key) + " = " + str(map.get(key)));
  return l;
}

static String mapToLines(Map map, Object f) {
  return lines(map(map, f));
}

static String mapToLines(Object f, Map map) {
  return lines(map(map, f));
}

static String mapToLines(Object f, Iterable l) {
  return lines(map(f, l));
}

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

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

static <A, B> String mapToLines(Map<A, B> map, IF2<A, B, String> f) {
  return lines(map(map, f));
}

static <A> String mapToLines(IF1<A, String> f, A data1, A... moreData) {
  return lines(map(f, data1, moreData));
}


static List<String> linesFromFile_list(File f) { try {
  return asList_closeIterator(linesFromFile(f));
} catch (Exception __e) { throw rethrow(__e); } }

static List<String> linesFromFile_list(String path) {
  return linesFromFile_list(newFile(path));
}


static File dirOfFile(File f) {
  return f == null ? null : f.getParentFile();
}


static int[] subIntArray(int[] b, int start) {
  return subIntArray(b, start, l(b));
}
  
static int[] subIntArray(int[] b, int start, int end) {
  start = max(start, 0); end = min(end, l(b));
  if (start == 0 && end == l(b)) return b;
  if (start >= end) return new int[0];
  int[] x = new int[end-start];
  System.arraycopy(b, start, x, 0, end-start);
  return x;
}




static short[] subShortArray(short[] 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 short[0];
  short[] x = new short[end-start];
  System.arraycopy(b, start, x, 0, end-start);
  return x;
}


static byte[] subByteArray(byte[] b, int start) {
  return subByteArray(b, start, l(b));
}
  
static 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 double[] subDoubleArray(double[] b, int start) { return subDoubleArray(b, start, l(b)); }
static double[] subDoubleArray(double[] 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 double[0];
  double[] x = new double[end-start];
  System.arraycopy(b, start, x, 0, end-start);
  return x;
}


static Map similarEmptyMap(Map m) {
  if (m instanceof TreeMap) return new TreeMap(((TreeMap) m).comparator());
  if (m instanceof LinkedHashMap) return new LinkedHashMap();
  
  // default to a hash map
  return new HashMap();
}

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




static String fileExtension(File f) {
  if (f == null) return null;
  return fileExtension(f.getName());
}

static String fileExtension(String s) {
  return substring(s, smartLastIndexOf(s, '.'));
}


static String dropSuffixIC(String suffix, String s) {
  return s == null ? null : ewic(s, suffix) ? s.substring(0, l(s)-l(suffix)) : s;
}


static String addPrefixOptIfNempty(String prefix, String s) {
  return addPrefixIfNotEmpty2(prefix, s);
}


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

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


static <A> ArrayList<A> asList_closeIterator(CloseableIterableIterator<A> it) {
   AutoCloseable __1 = it; try {
  return asList(it);
} finally { _close(__1); }}




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


static CloseableIterableIterator emptyCloseableIterableIterator_instance = new CloseableIterableIterator() {
  public Object next() { throw fail(); }
  public boolean hasNext() { return false; }
};

static <A> CloseableIterableIterator<A> emptyCloseableIterableIterator() {
  return emptyCloseableIterableIterator_instance; 
}


static CloseableIterableIterator<String> linesFromReader(Reader r) { return linesFromReader(r, null); }
static CloseableIterableIterator<String> linesFromReader(Reader r, IResourceHolder resourceHolder) {
  final BufferedReader br = bufferedReader(r);
  return holdResource(resourceHolder, iteratorFromFunction_f0_autoCloseable(new F0<String>() { public String get() { try {  return readLineFromReaderWithClose(br);  } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "return readLineFromReaderWithClose(br);"; }}, _wrapIOCloseable(r)));
}

static CloseableIterableIterator<String> linesFromReader(InputStream in) {
  return linesFromReader(inputStreamReader(in));
}




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


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


static <A> CloseableIterableIterator<A> iteratorFromFunction_f0_autoCloseable(final F0<A> f, final AutoCloseable closeable) {
  class IFF2 extends CloseableIterableIterator<A> {
    A a;
    boolean done = false;
    
    public boolean hasNext() {
      getNext();
      return !done;
    }
    
    public A next() {
      getNext();
      if (done) throw fail();
      A _a = a;
      a = null;
      return _a;
    }
    
    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 String readLineFromReaderWithClose(BufferedReader r) { try {
  String s = r.readLine();
  if (s == null) r.close();
  return s;
} catch (Exception __e) { throw rethrow(__e); } }


static 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 BufferedReader inputStreamReader(InputStream in) {
  return utf8Reader(in);
}





static BufferedReader inputStreamReader(File f) {
  return utf8Reader(f);
}




static <A> A getNext(Iterator<A> it) {
  return nextFromIterator(it);
}


static BufferedReader utf8Reader(InputStream in) {
  return utf8BufferedReader(in);
}



static BufferedReader utf8Reader(File f) {
  return utf8BufferedReader(f);
}




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




static abstract class VF1<A> implements IVF1<A> {
  public abstract void get(A a);
}
// immutable, has strong refs
// Do not run in a synchronized block - it goes wrong in the presence
// of elaborate classloaders (like in Gazelle BEA)
// see #1102990 and #1102991

final static class _MethodCache {
  final Class c;
  final HashMap<String, List<Method>> cache = new HashMap();
  
  _MethodCache(Class c) {
  this.c = c; _init(); }
  
  void _init() {
    Class _c = c;
    java.lang.Module myModule = getClass().getModule();
    boolean anyHiddenClasses = false;
    
    while (_c != null) {
      boolean exported = classIsExportedTo(_c, myModule);
       
      
      if (!exported)
        anyHiddenClasses = true;
      else
        for (Method m : _c.getDeclaredMethods())
          if ((anyHiddenClasses || !isAbstract(m))
            && !reflection_isForbiddenMethod(m))
            multiMapPut(cache, m.getName(), makeAccessible(m));

      _c = _c.getSuperclass();
    }
    
    // add default methods - this might lead to a duplication
    // because the overridden method is also added, but it's not
    // a problem except for minimal performance loss.
    // If any classes in the hierarchy were inaccessible, we add
    // all interface methods (see test_callForbiddenMethodByReflection for a test)
    
    for (Class intf : allInterfacesImplementedBy(c))
      for (Method m : intf.getDeclaredMethods())
        if ((anyHiddenClasses || m.isDefault()) && !reflection_isForbiddenMethod(m))
          multiMapPut(cache, m.getName(), makeAccessible(m));

     
  }
  
  // Returns only matching methods
  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); } }
  
  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); } }
  
  //Cl<Method> allMethods() { ret allValues(cache); }
}
// Meta - a "minimal" approach to adding meta-level to Java objects

static class Meta implements IMeta {
  
// Meta - a "minimal" approach to adding meta-level to Java objects
// (implementing the interface IMeta)

// We allocate one extra field for each Java object to make it
// reasoning-compatible (reasoning-compatible = extensible with
// fields of any name at runtime).
//
// We couldn't go for 0 extra fields (meta values must be linked
// directly from the object) and there are no half fields in
// Java... so there you go.
//
// Also, if you don't use any meta data, you are probably not
// reasoning about anything. The point of reasoning in JavaX is
// to attach information to objects directly used in the program.

// Possible information contained in the meta field:
//   Origin, destination, security level, sender, cost center,
//   purpose, list of reifications, ...

// So here it is. THE FIELD YOU HAVE BEEN WAITING FOR!

// [We also have IMeta to retrofit foreign classes (rare but
// probably useful).]

//////////////////////
// The "meta" field //
//////////////////////

// Generic meta value of any kind, but the typical case is it's a
// Map with extra field values for the object etc.
// "meta" is volatile to avoid synchronization; but you can also synchronize on
// _tempMetaMutex() which is usually the object itself. Collections
// and maps are exempt from using the collections's monitor as the meta
// mutex because their monitor tends to be held for long operations
// (e.g. cloneList). For those we use a substantially more complex
// algorithm using a weakMap. Probably overkill. I may reconsider.

volatile Object meta;

// The meta field is not transient, thus by default it will be
// persisted like anything else unless you customize your object
// to suppress or modulate this.

// ...and the interface methods

public void _setMeta(Object meta) { this.meta = meta; }
public Object _getMeta() { return meta; }

// MOST functions are implemented in IMeta (default implementations)

// Scaffolding convenience functions

final boolean scaffolding(){ return scaffoldingEnabled(); }
final boolean scaffolded(){ return scaffoldingEnabled(); }
boolean scaffoldingEnabled() { return main.scaffoldingEnabled(this); }
boolean scaffoldingEnabled(Object o) { return main.scaffoldingEnabled(o); }

// Implementing setMetaToString

String toString_base() { return super.toString(); }
public String toString() {
  Object o = metaGet("toString", this);
  if (o instanceof String) return ((String) o);
  if (o instanceof IF1) return str(((IF1) o).get(this));
  return toString_base();
}
}
static class StefansOS_ConnectToServer implements AutoCloseable {
  DialogIO io;
  volatile boolean on, verbose;
  Set<String> subs = synchroLinkedHashSet();
  VF1<String> onLine;
  String server = "botcompany.de";
  List<Runnable> onConnected = syncList();
   transient Set<IVF1<String>> onNewLine;
public  StefansOS_ConnectToServer onNewLine(IVF1<String> f) { onNewLine = createOrAddToSyncLinkedHashSet(onNewLine, f); return this; }
public  StefansOS_ConnectToServer removeNewLineListener(IVF1<String> f) { main.remove(onNewLine, f); return this; }
public   void newLine(String text) {  if (onNewLine != null) for (var listener : onNewLine) pcallF_typed(listener, text); }

  void start() {
    if (on) return;
    on = true;
    _connect();
    doEvery_daemon_highPriority(30000, new Runnable() {  public void run() { try {  if (io != null) sendLine("") ;
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "if (io != null) sendLine(\"\")"; }});
  }
  
  void cleanMeUp() { on = false; closeIO(); }
  public void close() { cleanMeUp(); }
  
  void _connect() {
    startThread("Connect", new Runnable() {  public void run() { try {    
      while (licensed() && on) {
        if (!tryToConnect()) { sleepSeconds(1); continue; }
        try {
          var io = talkTo(server, 6000);
          io.getSocket().setSoTimeout(30000+10000);
          print("Connected.");
          pcallFAll(onConnected);
           AutoCloseable __1 = tempAfterwards(new Runnable() {  public void run() { try {  print("Disconnected.") ;
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "print(\"Disconnected.\")"; }}); try {
          sendLine(io, format("computerID=*", computerID()));
          StefansOS_ConnectToServer.this.io = io;
          for (String channel : cloneList(subs)) sendLine(format("sub *", channel));
          print("Sent computer ID: " + computerID());
          String line;
          while ((line = io.readLine()) != null) {
            if (verbose) print("Server said: " + line);
            pcallF(onLine, line);
            newLine(line);
          }
        } finally { _close(__1); }} catch (Throwable e) { // pcall would also do an annoying message box
          printShortException(e);
        }
        closeIO();
        sleepSeconds(5);
      }
    
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "while (licensed() && on) {\r\n        if (!tryToConnect()) { sleepSeconds(1); c..."; }});
  }
  
  void closeIO() {
    if (io != null) { try { io.close(); } catch (Throwable __e) { pcallFail(__e); } io = null; }
  }
  
  boolean connected() { return io != null; }
  
  void sub(String channel) {
    if (subs.add(channel) && io != null) { try { sendLine(format("sub *", channel)); } catch (Throwable __e) { pcallFail(__e); }}
  }
  
  void startWithSubs(String... channels) {
    for (String channel : channels) sub(channel);
    start();
  }
  
  void sendLine(String line) { sendLine(io, line); }
void sendLine(DialogIO io, String line) {
    if (io != null) {
      if (verbose) print("Sending to server: " + line);
      io.sendLine(line);
    }
    else print("Can't send, not connected: " + line);
  }
  
  transient  IF0<Boolean> tryToConnect;
boolean tryToConnect() { return tryToConnect != null ? tryToConnect.get() : tryToConnect_base(); }
final boolean tryToConnect_fallback(IF0<Boolean> _f) { return _f != null ? _f.get() : tryToConnect_base(); }
boolean tryToConnect_base() { return true; }
}
static abstract class VF2<A, B> {
  abstract void get(A a, B b);
}
static class Matches {
  String[] m;
  
  Matches() {}
  Matches(String... m) {
  this.m = m;}
  
  String get(int i) { return i < m.length ? m[i] : null; }
  String unq(int i) { return unquote(get(i)); }
  
  String tlc(int i) { return unq(i).toLowerCase(); }
  boolean bool(int i) { return "true".equals(unq(i)); }
  String rest() { return m[m.length-1]; } // for matchStart
  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); }
}

// for the version with MasterSymbol (used WAY back in "Smart Bot"!) see #1010608

static class Symbol implements CharSequence {
  String text;
  
  Symbol() {}
  Symbol(String text, boolean dummy) {
  this.text = text;} // weird signature to prevent accidental calling
  
  public int hashCode() { return _hashCode(text); }
  public String toString() { return text; }
  public boolean equals(Object o) {
    return this == o;
  }

  // implementation of CharSequence methods
  
  public int length() { return text.length(); }
  public char charAt(int index) { return text.charAt(index); }
  public CharSequence subSequence(int start, int end) {
    return text.substring(start, end);
  }
}
static class Var<A> implements IVar<A>, ISetter<A> {
  Var() {}
  Var(A v) {
  this.v = v;}

  
  
A v; // you can access this directly if you use one thread

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 void clear() { set(null); }

public synchronized A getAndSet(A a) {
  var value = v;
  set(a);
  return value;
}

public IF0<A> getter() { return () -> get(); }
public IVF1<A> setter() { return __42 -> set(__42); }
public String toString() { return str(this.get()); }
}
static interface IMeta {
  // see class "Meta" for the bla bla
  
  public void _setMeta(Object meta);
  public Object _getMeta();
  default public IAutoCloseableF0 _tempMetaMutex() {
    return new IAutoCloseableF0() {
      public Object get() { return IMeta.this; }
      public void close() {}
    };
  }
  
  // actually query another object
  default public Object getMeta(Object obj, Object key){ return metaGet(obj, key); }
default public Object metaGet(Object obj, Object key) {
    // call global function
    return metaMapGet(obj, key);
  }
  
  default public Object metaGet(String key, Object obj) {
    // call global function
    return metaMapGet(obj, key);
  }
  
  default public Object getMeta(Object key){ return metaGet(key); }
default public Object metaGet(Object key) {
    if (key == null) return null;
    Object meta = _getMeta();
    if (meta instanceof Map) return ((Map) meta).get(key);
    return null;
  }
  
  default public void metaSet(IMeta obj, Object key, Object value){ metaPut(obj, key, value); }
default public void metaPut(IMeta obj, Object key, Object value) {
    // call global function
    metaMapPut(obj, key, value);
  }
  
  default public void metaSet(Object key, Object value){ metaPut(key, value); }
default public void metaPut(Object key, Object value) {
    if (key == null) return;
    Map map = convertObjectMetaToMap(this);
    syncMapPutOrRemove(map, key, value);
  }
}
// a variant of thread where you can get the Runnable target later.
// Also notes its existence on the VM bus.
// We should use this exclusively instead of Thread.

static class BetterThread extends Thread {
  Runnable target;
  
  BetterThread(Runnable target) {
  this.target = target; _created(); }
  BetterThread(Runnable target, String name) { super(name);
  this.target = target; _created(); }
  
  void _created() { vmBus_send("threadCreated", this); }
  
  public void run() { try {
    try {
      vmBus_send("threadStarted", this);
      if (target != null) target.run();
    } finally {
      vmBus_send("threadEnded", this); 
    }
  } catch (Exception __e) { throw rethrow(__e); } }
  
  Runnable getTarget() { return target; }
}
static class Scorer<A> {
  double score, total;
  List<A> successes, errors; // set to non-null if you want them filled
  boolean verboseFailures, verboseAll;
  
  final void add(double score){ addZeroToOne(score); }
void addZeroToOne(double score) {
    ++total;
    this.score += clamp(score, 0, 1);
  }
  
  void addZeroToOneError(double error) {
    addZeroToOne(1-error);
  }
  
  void addError() { add(false); }
  void addError(A info) { add(false, info); }
  void error(A info) { addError(info); }
  void addOK() { add(true); }
  void addOK(A info) { add(true, info); }
  void ok() { addOK(); }
  void ok(A info) { addOK(info); }
  
  boolean add(boolean correct) {
    ++total;
    if (correct) ++score;
    return correct;
  }
  
  boolean add(boolean correct, A info) {
    main.add(correct ? successes : errors, info);
    if (verboseAll || verboseFailures && !correct)
      _print((correct ? "[GOOD] " : "[BAD] ") + info);
    return add(correct);
  }
  
  // works if you use Scorer or Scorer<S>
  void eq(Object a, Object b) {
    if (_eq(a, b))
      add(true);
    else
      add(false, (A) (a + " != " + b));
  }
  
  void print() {
    main.print(toString());
  }
  
  public String toString() {
    return formatDouble(ratioToPercent(score, total), 1) + "% correct (n=" + formatDouble(total, 1) + ")";
  }
  
  double get() {
    return ratioToPercent(score, total);
  }
  
  double percentScore() { return get(); }
  double score() { return get(); }
  
  boolean allCorrect() {
    return score == total;
  }
  
  void add(Scorer scorer) {
    if (scorer == null) return;
    total += scorer.total;
    score += scorer.score;
    addAll(successes, scorer.successes);
    addAll(errors, scorer.errors);
  }
  
  void collectErrors() {
    errors = new ArrayList();
  }
  
  void collectSuccesses() {
    successes = new ArrayList();
  }
}
static interface ITokCondition {
  boolean get(List<String> tok, int i); // i = N Index
}
static abstract class TokCondition implements ITokCondition {
  public abstract boolean get(List<String> tok, int i); // i = N Index
}
static abstract class DialogIO implements AutoCloseable {
  String line;
  boolean eos, loud, noClose;
  Lock lock = lock();
  
  abstract String readLineImpl();
  abstract boolean isStillConnected();
  abstract void sendLine(String line);
  abstract boolean isLocalConnection();
  abstract Socket getSocket();

  int getPort() { Socket s = getSocket(); return s == null ? 0 : s.getPort(); }
  
  boolean helloRead = false;
  int shortenOutputTo = 500;
  
  String readLineNoBlock() {
    String l = line;
    line = null;
    return l;
  }
  
  boolean waitForLine() { try {
    ping();
    if (line != null) return true;
    //print("Readline");
    line = readLineImpl();
    //print("Readline done: " + line);
    if (line == null) eos = true;
    return line != null;
  } catch (Exception __e) { throw rethrow(__e); } }
  
  String readLine() {
    waitForLine();
    helloRead = true;
    return readLineNoBlock();
  }
  
  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();
  }
  
  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;
  }
  
  void pushback(String l) {
    if (line != null)
      throw fail();
    line = l;
    helloRead = false;
  }
}

static abstract class DialogHandler implements IDialogHandler {}

interface IDialogHandler {
  void run(DialogIO io);
}
// In the newest pinging system (with flag PingV3), a ping source
// is the object that "allows" some code to run.
// When that code calls ping(), the ping source's action (if defined)
// is triggered.

// This allows randomly interrupting code execution, for example.

static class PingSource {
  // returns true if it slept
   final public PingSource setAction(IF0<Boolean> action){ return action(action); }
public PingSource action(IF0<Boolean> action) { this.action = action; return this; }  final public IF0<Boolean> getAction(){ return action(); }
public IF0<Boolean> action() { return action; }
volatile IF0<Boolean> action;
  
  // optional description of this ping source
  String text;
  
  // optional thread pool that this ping source likes to run in
  ThreadPool threadPool;
  
  PingSource() {}
  PingSource(ThreadPool threadPool) {
  this.threadPool = threadPool;}
  PingSource(ThreadPool threadPool, String text) {
  this.text = text;
  this.threadPool = threadPool;}
  PingSource(IF0<Boolean> action) {
  this.action = action;}

  // returns true if it slept
  final boolean get() {
    var a = action;
    return a != null && a.get();
  }
  
  final void ping() { 
    var a = action;
    if (a != null) a.get();
  }
  
  void cancel() {
    action = new Cancelled();
  }
  
  class Cancelled implements IF0<Boolean> {
    public Boolean get() { throw new PingSourceCancelledException(PingSource.this); }
  }
  
  class Encapsulated implements Runnable , IFieldsToList{
  Runnable r;
  Encapsulated() {}
  Encapsulated(Runnable r) {
  this.r = r;}public Object[] _fieldsToList() { return new Object[] {r}; }

    public void run() { try {
      //System.out.println("Encapsulated running: " + r);
      try {
        pingSource_tl().set(PingSource.this);
        //System.out.println("Ping source set");
        ping();
        r.run();
        //System.out.println("Done running");
      } finally {
        //System.out.println("Finally");
        pingSource_tl().set(null);
      }
    } catch (Exception __e) { throw rethrow(__e); } }
    
    public String toString() { return PingSource.this + ": " + r; }
  }
  
  void dO(Runnable r) {
    if (r == null) return;
    threadPool.acquireThreadOrQueue(new Encapsulated(r));
  }
  
  public String toString() { String t = text; return nempty(t) ? t : super.toString(); }
  
  ISleeper_v2 sleeper() { return threadPool.sleeper(); }
}
// records its full size (total value count) in a field now
static class MultiMap<A,B> implements IMultiMap<A, B> {
  Map<A, List<B>> data = new HashMap<A, List<B>>();
  int fullSize;
  
  MultiMap() {}
  MultiMap(boolean useTreeMap) { if (useTreeMap) data = new TreeMap(); }
  MultiMap(MultiMap<A, B> map) { putAll(map); }
  MultiMap(Map<A, List<B>> data) {
  this.data = data;}

  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);
    ++fullSize;
  }}

  void add(A key, B value) { put(key, value); }

  void addAll(A key, Collection<B> values) { putAll(key, values); }
  
  void addAllIfNotThere(A key, Collection<B> values) { synchronized(data) {
    for (B value : values)
      setPut(key, value);
  }}
  
  void setPut(A key, B value) { synchronized(data) {
    if (!containsPair(key, value))
      put(key, value);
  }}
  
  boolean containsPair(A key, B value) { synchronized(data) {
    return get(key).contains(value);
  }}
  
  void putAll(Collection<A> keys, B value) { synchronized(data) {
    for (A key : unnullForIteration(keys))
      put(key, value);
  }}

  void putAll(A key, Collection<B> values) { synchronized(data) {
    if (nempty(values)) getActual(key).addAll(values);
  }}

  void putAll(Iterable<Pair<A, B>> pairs) { synchronized(data) {
    for (Pair<A, B> p : unnullForIteration(pairs))
      put(p.a, p.b);
  }}
  
  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;
  }}
  
  List<B> getOpt(A key) { synchronized(data) {
    return data.get(key);
  }}

  List<B> getAndClear(A key) { synchronized(data) {
    List<B> l = cloneList(data.get(key));
    remove(key);
    return l;
  }}
  
  // returns actual mutable live list
  // creates the list if not there
  List<B> getActual(A key) { synchronized(data) {
    List<B> list = data.get(key);
    if (list == null)
      data.put(key, list = _makeEmptyList());
    return list;
  }}
 
  void clean(A key) { synchronized(data) {
    List<B> list = data.get(key);
    if (list != null && list.isEmpty()) {
      fullSize -= l(list);
      data.remove(key);
    }
  }}

  final public Set<A> keys(){ return keySet(); }
public Set<A> keySet() { synchronized(data) {
    return data.keySet();
  }}

  void remove(A key) { synchronized(data) {
    fullSize -= l(this.getOpt(key));
    data.remove(key);
  }}
  
  final void remove(Pair<A, B> p){ removePair(p); }
void removePair(Pair<A, B> p) {
    if (p != null) remove(p.a, p.b);
  }

  void remove(A key, B value) { synchronized(data) {
    List<B> list = data.get(key);
    if (list != null) {
      if (list.remove(value))
        fullSize--;
      if (list.isEmpty())
        data.remove(key);
    }
  }}

  void clear() { synchronized(data) {
    data.clear();
  }}

  boolean containsKey(A key) { synchronized(data) {
    return data.containsKey(key);
  }}

  B getFirst(A key) { synchronized(data) {
    List<B> list = get(key);
    return list.isEmpty() ? null : list.get(0);
  }}
  
  void addAll(MultiMap<A, B> map) { putAll(map); }
  
  void putAll(MultiMap<A, B> map) { synchronized(data) {
    for (A key : map.keySet())
      putAll(key, map.get(key));
  }}
  
  void putAll(Map<A, B> map) { synchronized(data) {
    if (map != null) for (Map.Entry<A, B> e : map.entrySet())
      put(e.getKey(), e.getValue());
  }}
  
  final public int keyCount(){ return keysSize(); }
public int keysSize() { synchronized(data) { return l(data); }}
  
  final public int fullSize(){ return size(); }
public int size() { synchronized(data) {
    return fullSize;
  }}
  
  // expensive operation
  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;
  }}
  
  Map<A, List<B>> asMap() { synchronized(data) {
    return cloneMap(data);
  }}
  
  public boolean isEmpty() { synchronized(data) { return data.isEmpty(); }}
  
  // override in subclasses
  List<B> _makeEmptyList() {
    return new ArrayList();
  }
  
  // returns live lists
  Collection<List<B>> allLists() {
    synchronized(data) {
      return new ArrayList(data.values());
    }
  }
  Collection<List<B>> values() { return allLists(); }
  
  List<B> allValues() {
    return concatLists(data.values());
  }
  
  Object mutex() { return data; }
  
  public String toString() { return "mm" + str(data); }
  
  Map<A, List<B>> innerMap() { return data; }
}
// Note: This does have the values problem (complicated values can cause memory leaks)
static class BetterThreadLocal<A> {
  Map<Thread, A> map = newWeakHashMap();
  
  BetterThreadLocal() {}
  BetterThreadLocal(A value) { set(value); }
  
  boolean isSet() { return map.containsKey(currentThread()); }
  
  A get() {
    if (map.containsKey(currentThread()))
      return map.get(currentThread());
    A value = initialValue();
    set(value);
    return value;
  }
  
  A get(Thread thread) {
    return thread == null ? null : map.get(thread);
  }
  
  void set(A a) {
    map.put(currentThread(), a);
  }
  
  public A initialValue() { return null; }
}
interface IntSize {
  int size();
  
  default boolean isEmpty() { return size() == 0; }
}
static interface IResourceLoader {
  String loadSnippet(String snippetID);
  String getTranspiled(String snippetID); // with libs
  int getSnippetType(String snippetID);
  String getSnippetTitle(String snippetID);
  File loadLibrary(String snippetID);
  
  //ifndef NoJavaXJar
  default File pathToJavaXJar() { return pathToJavaxJar_noResourceLoader(); }
  //endifndef

  // may return null, then caller compiles themselves
  default File getSnippetJar(String snippetID, String transpiledSrc) { return null; }
}
/*
 * @(#)WeakHashMap.java 1.5 98/09/30
 *
 * Copyright 1998 by Sun Microsystems, Inc.,
 * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
 * All rights reserved.
 *
 * This software is the confidential and proprietary information
 * of Sun Microsystems, Inc. ("Confidential Information").  You
 * shall not disclose such Confidential Information and shall use
 * it only in accordance with the terms of the license agreement
 * you entered into with Sun.
 */
 
// From https://github.com/mernst/plume-lib/blob/df0bfafc3c16848d88f4ea0ef3c8bf3367ae085e/java/src/plume/WeakHasherMap.java

static final class WeakHasherMap<K,V> extends AbstractMap<K,V> implements Map<K,V> {

    private Hasher hasher = null;
    /*@Pure*/
    private boolean keyEquals(Object k1, Object k2) {
  return (hasher==null ? k1.equals(k2)
           : hasher.equals(k1, k2));
    }
    /*@Pure*/
    private int keyHashCode(Object k1) {
  return (hasher==null ? k1.hashCode()
           : hasher.hashCode(k1));
    }

    // The WeakKey class can't be static because it depends on the hasher.
    // That in turn means that its methods can't be static.
    // However, I need to be able to call the methods such as create() that
    // were static in the original version of this code.
    // This finesses that.

    private /*@Nullable*/ WeakKey WeakKeyCreate(K k) {
  if (k == null) return null;
  else return new WeakKey(k);
    }
    private /*@Nullable*/ WeakKey WeakKeyCreate(K k, ReferenceQueue<? super K> q) {
  if (k == null) return null;
  else return new WeakKey(k, q);
    }

    // Cannot be a static class: uses keyHashCode() and keyEquals()
    private final class WeakKey extends WeakReference<K> {
  private int hash; /* Hashcode of key, stored here since the key
           may be tossed by the GC */

  private WeakKey(K k) {
      super(k);
      hash = keyHashCode(k);
  }

  private /*@Nullable*/ WeakKey create(K k) {
      if (k == null) return null;
      else return new WeakKey(k);
  }

  private WeakKey(K k, ReferenceQueue<? super K> q) {
      super(k, q);
      hash = keyHashCode(k);
  }

  private /*@Nullable*/ WeakKey create(K k, ReferenceQueue<? super K> q) {
      if (k == null) return null;
      else return new WeakKey(k, q);
  }

        /* A WeakKey is equal to another WeakKey iff they both refer to objects
     that are, in turn, equal according to their own equals methods */
  /*@Pure*/
  @Override
  public boolean equals(/*@Nullable*/ Object o) {
            if (o == null) return false; // never happens
      if (this == o) return true;
            // This test is illegal because WeakKey is a generic type,
            // so use the getClass hack below instead.
      // if (!(o instanceof WeakKey)) return false;
            if (!(o.getClass().equals(WeakKey.class))) return false;
      Object t = this.get();
            @SuppressWarnings("unchecked")
      Object u = ((WeakKey)o).get();
      if ((t == null) || (u == null)) return false;
      if (t == u) return true;
      return keyEquals(t, u);
  }

  /*@Pure*/
  @Override
  public int hashCode() {
      return hash;
  }

    }


    /* Hash table mapping WeakKeys to values */
    private HashMap<WeakKey,V> hash;

    /* Reference queue for cleared WeakKeys */
    private ReferenceQueue<? super K> queue = new ReferenceQueue<K>();


    /* Remove all invalidated entries from the map, that is, remove all entries
       whose keys have been discarded.  This method should be invoked once by
       each public mutator in this class.  We don't invoke this method in
       public accessors because that can lead to surprising
       ConcurrentModificationExceptions. */
    @SuppressWarnings("unchecked")
    private void processQueue() {
  WeakKey wk;
  while ((wk = (WeakKey)queue.poll()) != null) { // unchecked cast
      hash.remove(wk);
  }
    }


    /* -- Constructors -- */

    /**
     * Constructs a new, empty <code>WeakHashMap</code> with the given
     * initial capacity and the given load factor.
     *
     * @param  initialCapacity  the initial capacity of the
     *                          <code>WeakHashMap</code>
     *
     * @param  loadFactor       the load factor of the <code>WeakHashMap</code>
     *
     * @throws IllegalArgumentException  If the initial capacity is less than
     *                                   zero, or if the load factor is
     *                                   nonpositive
     */
    public WeakHasherMap(int initialCapacity, float loadFactor) {
  hash = new HashMap<WeakKey,V>(initialCapacity, loadFactor);
    }

    /**
     * Constructs a new, empty <code>WeakHashMap</code> with the given
     * initial capacity and the default load factor, which is
     * <code>0.75</code>.
     *
     * @param  initialCapacity  the initial capacity of the
     *                          <code>WeakHashMap</code>
     *
     * @throws IllegalArgumentException  If the initial capacity is less than
     *                                   zero
     */
    public WeakHasherMap(int initialCapacity) {
  hash = new HashMap<WeakKey,V>(initialCapacity);
    }

    /**
     * Constructs a new, empty <code>WeakHashMap</code> with the default
     * capacity and the default load factor, which is <code>0.75</code>.
     */
    public WeakHasherMap() {
  hash = new HashMap<WeakKey,V>();
    }

    /**
     * Constructs a new, empty <code>WeakHashMap</code> with the default
     * capacity and the default load factor, which is <code>0.75</code>.
     * The <code>WeakHashMap</code> uses the specified hasher for hashing
     * keys and comparing them for equality.
     * @param h the Hasher to use when hashing values for this map
     */
    public WeakHasherMap(Hasher h) {
  hash = new HashMap<WeakKey,V>();
  hasher = h;
    }


    /* -- Simple queries -- */

    /**
     * Returns the number of key-value mappings in this map.
     * <strong>Note:</strong> <em>In contrast to most implementations of the
     * <code>Map</code> interface, the time required by this operation is
     * linear in the size of the map.</em>
     */
    /*@Pure*/
    @Override
    public int size() {
  return entrySet().size();
    }

    /**
     * Returns <code>true</code> if this map contains no key-value mappings.
     */
    /*@Pure*/
    @Override
    public boolean isEmpty() {
  return entrySet().isEmpty();
    }

    /**
     * Returns <code>true</code> if this map contains a mapping for the
     * specified key.
     *
     * @param   key   the key whose presence in this map is to be tested
     */
    /*@Pure*/
    @Override
    public boolean containsKey(Object key) {
        @SuppressWarnings("unchecked")
        K kkey = (K) key;
  return hash.containsKey(WeakKeyCreate(kkey));
    }


    /* -- Lookup and modification operations -- */

    /**
     * Returns the value to which this map maps the specified <code>key</code>.
     * If this map does not contain a value for this key, then return
     * <code>null</code>.
     *
     * @param  key  the key whose associated value, if any, is to be returned
     */
    /*@Pure*/
    @Override
    public /*@Nullable*/ V get(Object key) {  // type of argument is Object, not K
        @SuppressWarnings("unchecked")
        K kkey = (K) key;
  return hash.get(WeakKeyCreate(kkey));
    }

    /**
     * Updates this map so that the given <code>key</code> maps to the given
     * <code>value</code>.  If the map previously contained a mapping for
     * <code>key</code> then that mapping is replaced and the previous value is
     * returned.
     *
     * @param  key    the key that is to be mapped to the given
     *                <code>value</code>
     * @param  value  the value to which the given <code>key</code> is to be
     *                mapped
     *
     * @return  the previous value to which this key was mapped, or
     *          <code>null</code> if if there was no mapping for the key
     */
    @Override
    public V put(K key, V value) {
  processQueue();
  return hash.put(WeakKeyCreate(key, queue), value);
    }

    /**
     * Removes the mapping for the given <code>key</code> from this map, if
     * present.
     *
     * @param  key  the key whose mapping is to be removed
     *
     * @return  the value to which this key was mapped, or <code>null</code> if
     *          there was no mapping for the key
     */
    @Override
    public V remove(Object key) { // type of argument is Object, not K
  processQueue();
        @SuppressWarnings("unchecked")
        K kkey = (K) key;
  return hash.remove(WeakKeyCreate(kkey));
    }

    /**
     * Removes all mappings from this map.
     */
    @Override
    public void clear() {
  processQueue();
  hash.clear();
    }


    /* -- Views -- */


    /* Internal class for entries */
    // This can't be static, again because of dependence on hasher.
    @SuppressWarnings("TypeParameterShadowing")
    private final class Entry<K,V> implements Map.Entry<K,V> {
  private Map.Entry<WeakKey,V> ent;
  private K key;  /* Strong reference to key, so that the GC
           will leave it alone as long as this Entry
           exists */

  Entry(Map.Entry<WeakKey,V> ent, K key) {
      this.ent = ent;
      this.key = key;
  }

  /*@Pure*/
  @Override
  public K getKey() {
      return key;
  }

  /*@Pure*/
  @Override
  public V getValue() {
      return ent.getValue();
  }

  @Override
  public V setValue(V value) {
      return ent.setValue(value);
  }

        /*@Pure*/
        private boolean keyvalEquals(K o1, K o2) {
      return (o1 == null) ? (o2 == null) : keyEquals(o1, o2);
  }

        /*@Pure*/
        private boolean valEquals(V o1, V o2) {
      return (o1 == null) ? (o2 == null) : o1.equals(o2);
  }

        /*@Pure*/
        @SuppressWarnings("NonOverridingEquals")
        public boolean equals(Map.Entry<K,V> e /* Object o*/) {
            // if (! (o instanceof Map.Entry)) return false;
            // Map.Entry<K,V> e = (Map.Entry<K,V>)o;
      return (keyvalEquals(key, e.getKey())
        && valEquals(getValue(), e.getValue()));
  }

  /*@Pure*/
  @Override
  public int hashCode() {
      V v;
      return (((key == null) ? 0 : keyHashCode(key))
        ^ (((v = getValue()) == null) ? 0 : v.hashCode()));
  }

    }


    /* Internal class for entry sets */
    private final class EntrySet extends AbstractSet<Map.Entry<K,V>> {
  Set<Map.Entry<WeakKey,V>> hashEntrySet = hash.entrySet();

  @Override
  public Iterator<Map.Entry<K,V>> iterator() {

      return new Iterator<Map.Entry<K,V>>() {
    Iterator<Map.Entry<WeakKey,V>> hashIterator = hashEntrySet.iterator();
    Map.Entry<K,V> next = null;

    @Override
    public boolean hasNext() {
        while (hashIterator.hasNext()) {
      Map.Entry<WeakKey,V> ent = hashIterator.next();
      WeakKey wk = ent.getKey();
      K k = null;
      if ((wk != null) && ((k = wk.get()) == null)) {
          /* Weak key has been cleared by GC */
          continue;
      }
      next = new Entry<K,V>(ent, k);
      return true;
        }
        return false;
    }

    @Override
    public Map.Entry<K,V> next() {
        if ((next == null) && !hasNext())
      throw new NoSuchElementException();
        Map.Entry<K,V> e = next;
        next = null;
        return e;
    }

    @Override
    public void remove() {
        hashIterator.remove();
    }

      };
  }

  /*@Pure*/
  @Override
  public boolean isEmpty() {
      return !(iterator().hasNext());
  }

  /*@Pure*/
  @Override
  public int size() {
      int j = 0;
      for (Iterator<Map.Entry<K,V>> i = iterator(); i.hasNext(); i.next()) j++;
      return j;
  }

  @Override
  public boolean remove(Object o) {
      processQueue();
      if (!(o instanceof Map.Entry<?,?>)) return false;
            @SuppressWarnings("unchecked")
      Map.Entry<K,V> e = (Map.Entry<K,V>)o; // unchecked cast
      Object ev = e.getValue();
      WeakKey wk = WeakKeyCreate(e.getKey());
      Object hv = hash.get(wk);
      if ((hv == null)
    ? ((ev == null) && hash.containsKey(wk)) : hv.equals(ev)) {
    hash.remove(wk);
    return true;
      }
      return false;
  }

  /*@Pure*/
  @Override
  public int hashCode() {
      int h = 0;
      for (Iterator<Map.Entry<WeakKey,V>> i = hashEntrySet.iterator(); i.hasNext(); ) {
    Map.Entry<WeakKey,V> ent = i.next();
    WeakKey wk = ent.getKey();
    Object v;
    if (wk == null) continue;
    h += (wk.hashCode()
          ^ (((v = ent.getValue()) == null) ? 0 : v.hashCode()));
      }
      return h;
  }

    }


    private /*@Nullable*/ Set<Map.Entry<K,V>> entrySet = null;

    /**
     * Returns a <code>Set</code> view of the mappings in this map.
     */
    /*@SideEffectFree*/
    @Override
    public Set<Map.Entry<K,V>> entrySet() {
  if (entrySet == null) entrySet = new EntrySet();
  return entrySet;
    }

    // find matching key
    K findKey(Object key) {
      processQueue();
      K kkey = (K) key;
      // TODO: use replacement for HashMap to avoid reflection
      WeakKey wkey = WeakKeyCreate(kkey);
      WeakKey found = hashMap_findKey(hash, wkey);
      return found == null ? null : found.get();
    }
}
static class proxy_InvocationHandler implements InvocationHandler {
  Object target;
  
  proxy_InvocationHandler() {}
  proxy_InvocationHandler(Object target) {
  this.target = target;}
  
  public Object invoke(Object proxy, Method method, Object[] args) {
    return call(target, method.getName(), unnull(args));
  }
}
// -has fast nextElement() and prevElement()
// -design allows for more functions like reordering the list
// -Saves up to 34% in space over LinkedHashSet
//    (e.g. 22% for a set of 1,000 Ints)
static class CompactLinkedHashSet<A> extends AbstractSet<A> {
  UnsynchronizedCompactHashSet<Entry<A>> entries = new UnsynchronizedCompactHashSet();
  Entry<A> head, tail;
  
  static class Entry<A> {
    A value;
    Entry<A> prev, next;
    
    public int hashCode() {
      return _hashCode(value);
    }
    
    // "magic" equals function for CompactHashSet lookup without temp object
    public boolean equals(Object o) {
      return o == this || eq(value, o);
    }
  }
  
  public boolean add(A a) {
    if (entries.contains(a)) return false;
    Entry<A> n = new Entry();
    n.value = a;
    n.prev = tail;
    if (tail != null) tail.next = n;
    tail = n;
    if (head == null) head = n;
    entries.add(n);
    return true;
  }
  
  public boolean remove(Object a) {
    return remove(entries.find(a));
  }
  
  public boolean remove(Entry<A> node) {
    if (node == null) return false;
    if (node.next != null) node.next.prev = node.prev; else tail = node.prev;
    if (node.prev != null) node.prev.next = node.next; else head = node.next;
    entries.remove(node);
    return true;
  }
  
  public int size() { return entries.size(); }
  
  public IterableIterator<A> iterator() {
    return new IterableIterator<A>() {
      Entry<A> entry = head, prev = null;
      public boolean hasNext() { return entry != null; }
      public A next() {
        A a = entry.value;
        prev = entry;
        entry = entry.next;
        return a;
      }
      
      // untested
      public void remove() {
        if (prev == null) throw new IllegalStateException();
        CompactLinkedHashSet.this.remove(prev);
        prev = null;
      }
    };
  }
  
  public void clear() {
    entries.clear();
    head = tail = null;
  }
  
  public boolean contains(Object a) {
    return entries.contains(a);
  }
  
  public A find(Object o) {
    Entry<A> e = entries.find(o);
    return e == null ? null : e.value;
  }
  
  public A prevElement(A a) {
    Entry<A> e = entries.find(a);
    if (e == null || e.prev == null) return null;
    return e.prev.value;
  }
  
  public A nextElement(A a) {
    Entry<A> e = entries.find(a);
    if (e == null || e.next == null) return null;
    return e.next.value;
  }
  
  public A first() { return head == null ? null : head.value; }
  public A last() { return tail == null ? null : tail.value; }
  
  boolean removeIfSame(Object o) {
    A value = find(o);
    if (value == o) {
      remove(value);
      return true;
    }
    return false;
  }
}
static class FixedRateTimer extends java.util.Timer implements AutoCloseable {
  FixedRateTimer() { this(false); }
  FixedRateTimer(boolean daemon) { this(defaultTimerName(), daemon); }
  FixedRateTimer(String name) { this(name, false); }
  FixedRateTimer(String name, boolean daemon) {
    super(name, daemon);
    _registerTimer(this);
  }
  
  List<Entry> entries = synchroList();
  
  static class Entry implements IFieldsToList{
  TimerTask task;
  long firstTime;
  long period;
  Entry() {}
  Entry(TimerTask task, long firstTime, long period) {
  this.period = period;
  this.firstTime = firstTime;
  this.task = task;}
  public String toString() { return shortClassName_dropNumberPrefix(this) + "(" + task + ", " + firstTime + ", " + period + ")"; }public Object[] _fieldsToList() { return new Object[] {task, firstTime, period}; }
}
  
  // Note: not all methods overridden; only use these ones
  
  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();
  }
  
  FixedRateTimer changeRate(int newPeriod) {
    Object r = ((SmartTimerTask) first(entries).task).r;
    cancel();
    return doEvery(newPeriod, r);
  }
  
  public void close() { try { cancel(); } catch (Exception __e) { throw rethrow(__e); } }
}
static class Pair<A, B> implements Comparable<Pair<A, B>> {
   final public Pair<A, B> setA(A a){ return a(a); }
public Pair<A, B> a(A a) { this.a = a; return this; }  final public A getA(){ return a(); }
public A a() { return a; }
 A a;
   final public Pair<A, B> setB(B b){ return b(b); }
public Pair<A, B> b(B b) { this.b = b; return this; }  final public B getB(){ return b(); }
public B b() { return b; }
 B b;

  Pair() {}
  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 class Fail extends RuntimeException implements IFieldsToList{
  Object[] objects;
  Fail() {}
  Fail(Object... objects) {
  this.objects = objects;}public Object[] _fieldsToList() { return new Object[] {objects}; }

  Fail(Throwable cause, Object... objects) {
    super(cause);
  this.objects = objects;
  }
  
  public String toString() { return joinNemptiesWithColon("Fail", getMessage()); }
  
  public String getMessage() { return commaCombine(getCause(), objects); }
}
static interface IResourceHolder {
  <A extends AutoCloseable> A add(A a);
  Collection<AutoCloseable> takeAll();
}
static class Rect implements WidthAndHeight , IFieldsToList{
  static final String _fieldOrder = "x y w h";
  int x;
  int y;
  int w;
  int h;
  Rect() {}
  Rect(int x, int y, int w, int h) {
  this.h = h;
  this.w = w;
  this.y = y;
  this.x = x;}

public boolean equals(Object o) {
if (!(o instanceof Rect)) return false;
    Rect __1 =  (Rect) o;
    return x == __1.x && y == __1.y && w == __1.w && h == __1.h;
}

  public int hashCode() {
    int h = 2543108;
    h = boostHashCombine(h, _hashCode(x));
    h = boostHashCombine(h, _hashCode(y));
    h = boostHashCombine(h, _hashCode(w));
    h = boostHashCombine(h, _hashCode(h));
    return h;
  }
  public Object[] _fieldsToList() { return new Object[] {x, y, w, h}; }

  Rect(Rectangle r) {
    x = r.x;
    y = r.y;
    w = r.width;
    h = r.height;
  }
  
  Rect(Pt p, int w, int h) {
  this.h = h;
  this.w = w; x = p.x; y = p.y; }
  Rect(Rect r) { x = r.x; y = r.y; w = r.w; h = r.h; }
  
  final Rectangle getRectangle() {
    return new Rectangle(x, y, w, h);
  }
  
  public String toString() {
    return x + "," + y + " / " + w + "," + h;
  }
  
  final int x1() { return x; }
  final int y1() { return y; }
  final int x2() { return x + w; }
  final int y2() { return y + h; }
  
  final boolean contains(Pt p) {
    return contains(p.x, p.y);
  }
  
  final boolean contains(int _x, int _y) {
    return _x >= x && _y >= y && _x < x+w && _y < y+h;
  }
  
  final boolean contains(Rectangle r) {
    return rectContains(this, r);
  }
  
  final boolean empty() { return w <= 0 || h <= 0; }
  
  final public int getWidth() { return w; }
  final public int getHeight() { return h; }
  
  final public int area() { return w*h; }
  
  final public int x() { return x; }
  final public int y() { return y; }
  
  WidthAndHeight widthAndHeight() { return main.widthAndHeight(w, h); }
}
static class Pt implements Comparable<Pt>, IDoublePt {
  int x, y;
  
  Pt() {}
  Pt(Point p) {
    x = p.x;
    y = p.y;
  }
  Pt(int x, int y) {
  this.y = y;
  this.x = x;}
  
  Point getPoint() {
    return new Point(x, y);
  }
  
  public boolean equals(Object o) {
    return o instanceof Pt && x == ((Pt) o).x && y == ((Pt) o).y;
  }
  
  public int hashCode() {
    return boostHashCombine(x, y);
  }
  
  // compare in scan order
  public int compareTo(Pt p) {
    if (y != p.y) return cmp(y, p.y);
    return cmp(x, p.x);
  }
  
  public String toString() {
    return x + ", " + y;
  }
  
  double length() { return sqrt(x*x+y*y); }
  
  public Pt minus(Pt p) { return ptMinus(this, p); }
  
  public double x_double() { return x; }
  public double y_double() { return y; }
}
static abstract class F0<A> {
  abstract A get();
}
static abstract class F1<A, B> {
  abstract B get(A a);
}
// you still need to implement hasNext() and next()
static abstract class IterableIterator<A> implements Iterator<A>, Iterable<A> {
  public Iterator<A> iterator() {
    return this;
  }
  
  public void remove() {
    unsupportedOperation();
  }
}
interface PCallPolicy {
  void handlePcallFail(Throwable e);
}
// elements are put to front when added (not when accessed)
static class MRUCache<A, B> extends LinkedHashMap<A, B> {
  int maxSize = 10;

  MRUCache() {}
  MRUCache(int maxSize) {
  this.maxSize = maxSize;}
  
  protected boolean removeEldestEntry(Map.Entry eldest) {
    return size() > maxSize;
  }
  
  Object _serialize() {
    return ll(maxSize, cloneLinkedHashMap(this));
  }
  
  static MRUCache _deserialize(List l) {
    MRUCache m = new MRUCache();
    m.maxSize = (int) first(l);
    m.putAll((LinkedHashMap) second(l));
    return m;
  }
}
public static interface IF0<A> {
  A get();
}
static interface Hasher<A> {
  int hashCode(A a);
  boolean equals(A a, A b);
}
static interface IContentsIndexedList2<A> extends List<A> {
  TreeSet<HasIndex> indicesOf_treeSetOfHasIndex(A o);
}
static abstract class CloseableIterableIterator<A> extends IterableIterator<A> implements AutoCloseable {
  public void close() throws Exception {}
}

static interface IFieldsToList {
  Object[] _fieldsToList();
}
static interface IF2<A, B, C> {
  C get(A a, B b);
}
static interface Producer<A> {
  public A next(); // null when end
}
static interface IF1<A, B> {
  B get(A a);
}
// TODO: subclass RuntimeException and use Meta instead of DynamicObject
static class PersistableThrowable extends DynamicObject {
  String className;
  String msg;
  String stacktrace;
   final public PersistableThrowable setActualThrowable(Throwable actualThrowable){ return actualThrowable(actualThrowable); }
public PersistableThrowable actualThrowable(Throwable actualThrowable) { this.actualThrowable = actualThrowable; return this; }  final public Throwable getActualThrowable(){ return actualThrowable(); }
public Throwable actualThrowable() { return actualThrowable; }
transient Throwable actualThrowable;
  
  PersistableThrowable() {}
  PersistableThrowable(Throwable e) {
    actualThrowable = 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;
  }
  
  RuntimeException asRuntimeException() {
    if (actualThrowable != null)
      return main.asRuntimeException(actualThrowable);
    return new Fail(this);
  }
}
static interface IVF1<A> {
  void get(A a);
}
static interface IVF2<A, B> {
  void get(A a, B b);
}
static interface IIntPred {
  boolean get(int a);
}
static class HasIndex implements Comparable<HasIndex> {
  int idx;
  
  HasIndex() {}
  HasIndex(int idx) {
  this.idx = idx;}
  
  public int compareTo(HasIndex h) {
    return idx-h.idx;
  }
  
  final int get() { return idx; }
}


static class PingSourceCancelledException extends RuntimeException implements IFieldsToList{
  PingSource pingSource;
  PingSourceCancelledException() {}
  PingSourceCancelledException(PingSource pingSource) {
  this.pingSource = pingSource;}
  public String toString() { return shortClassName_dropNumberPrefix(this) + "(" + pingSource + ")"; }public Object[] _fieldsToList() { return new Object[] {pingSource}; }

}
interface ISleeper_v2 {
  default Sleeping doLater(long targetTime, Runnable r) {
    return doLater(sysTimeToTimestamp(targetTime), r);
  }
  
  Sleeping doLater(Timestamp targetTime, Runnable r);
  
  public default Sleeping doAfter(double seconds, Runnable r) {
    return doLater(tsNow().plusSeconds(seconds), r);
  }
}
static interface ISetter<A> {
 void set(A a);
}

// The idea is to leave max as the actual number of cores the system
// has (numberOfCores()), and in case of being fully booked, raise an
// alert (customerMustWaitAlert) which can be handled by a strategy
// object (different reactions are possible).
// If nothing is done in such an event, clients are processed serially
// (no guarantees of order), split up among the available threads.

/* SYNChronisation order:
      1. PooledThread
      2. ThreadPool */

static class ThreadPool implements AutoCloseable {
  int max = numberOfCores();
  List<PooledThread> all = new ArrayList();
  Set<PooledThread> used = new HashSet();
  Set<PooledThread> free = new HashSet();
  boolean verbose, retired;
  
  // our own ping surce so we can start threads & keep them running
  class InternalPingSource extends PingSource {}
  InternalPingSource internalPingSource = new InternalPingSource();
  
  MultiSleeper sleeper = new MultiSleeper();
  
  ThreadPool() {}
  ThreadPool(int max) {
  this.max = max;}
  
  synchronized int maxSize() { return max; }
  synchronized int total() { return l(used)+l(free); }
  
   transient Set<Runnable> onCustomerMustWaitAlert;
public  ThreadPool onCustomerMustWaitAlert(Runnable r) { onCustomerMustWaitAlert = createOrAddToSyncLinkedHashSet(onCustomerMustWaitAlert, r); return this; }
public  ThreadPool removeCustomerMustWaitAlertListener(Runnable r) { main.remove(onCustomerMustWaitAlert, r); return this; }
public   void customerMustWaitAlert() {  if (onCustomerMustWaitAlert != null) for (var listener : onCustomerMustWaitAlert) pcallF_typed(listener); }
  
  void fireCustomerMustWaitAlert() {
    vmBus_send("customerMustWaitAlert", this, currentThread());
    customerMustWaitAlert();
  }

  // DOESN'T WAIT. adds action to a thread's queue if nothing is
  // available immediately.
  PooledThread acquireThreadOrQueue(Runnable action) {
    if (action == null) return null;
    PooledThread t;
    synchronized(this) {
      if (_hasFreeAfterCreating()) {
        t = _firstFreeThread();
        markUsed(t);
      } else
        t = _anyThread();
    }
    
    t.addWork(action); // will move it from free to used
    return t;
  }
  
  // run in synchronized block
  boolean _hasFreeAfterCreating() {
    checkNotRetired();
    if (nempty(free)) return true;
    if (total() < max) {
      PooledThread t = newThread();
      all.add(t);
      free.add(t);
      return true;
    }
    return false;
  }
  
  // WAITS until thread is available
  PooledThread acquireThreadOrWait(Runnable action) { try {
    if (action == null) return null;
    PooledThread t;
    while (true) {
      synchronized(this) {
        if (_hasFreeAfterCreating()) {
          t = _firstFreeThread();
          break;
        } else
          _waitWaitWait();
      }
    }
    t.addWork(action);
    return t;
  } catch (Exception __e) { throw rethrow(__e); } }
  
  PooledThread _firstFreeThread() {
    return first(free);
  }
  
  PooledThread _anyThread() {
    return random(used);
  }
  
  class PooledThread extends Thread {
    PooledThread(String name) { super(name); }
    
    AppendableChain<Runnable> q;
    
    synchronized Runnable _grabWorkOrSleep() { try {
      Runnable r = first(q);
      if (r == null) {
        markFree(this);
        if (verbose) print("Thread sleeps");
        synchronized(this) { wait(); }
        if (verbose) print("Thread woke up");
        return null;
      }
      q = popFirst(q);
      return r;
    } catch (Exception __e) { throw rethrow(__e); } }
    
    public void run() { try {
      pingSource_tl().set(internalPingSource);
      while  (!retired()) { ping(); 
        Runnable r = _grabWorkOrSleep();
        if (verbose) print(this + " work: " + r);
        if (r != null)
          try {
            if (verbose) print(this + " running: " + r);
            r.run();
            pingSource_tl().set(internalPingSource);
            if (verbose) print(this + " done");
          } catch (Throwable e) {
            pingSource_tl().set(internalPingSource);
            if (verbose) print(this + " error");
            printStackTrace(e);
          } finally {
            pingSource_tl().set(internalPingSource);          
            if (verbose) print("ThreadPool finally");
          }
      }
    } catch (Exception __e) { throw rethrow(__e); } }
    
    synchronized boolean isEmpty() { return empty(q); }
    
    // append to q (do later)
    void addWork(Runnable r) {
      if (verbose) print("Added work to " + this + ": " + r);
      synchronized(this) {
        q = chainPlus(q, r);
        notifyAll();
      }
    }  
  }
  
  PooledThread newThread() {
    PooledThread t = new PooledThread("Thread Pool Inhabitant " + n2(total()+1));
    t.start();
    return t;
  }
  
  synchronized void markFree(PooledThread t) {
    used.remove(t);
    free.add(t);
    notifyAll();
  }
  
  synchronized void markUsed(PooledThread t) {
    free.remove(t);
    used.add(t);
  }
  
  synchronized public String toString() {
    return retired()
      ? "Retired ThreadPool"
      : "ThreadPool " + roundBracket(commaCombine(
        n2(used) + " used out of " + n2(total()),
        max <= total() ? null : "could grow to " + n2(max)));
  }
  
  synchronized boolean retired() { return retired; }
  synchronized void retire() {
    if (verbose) print("ThreadPool Retiring");
    retired = true;
    for (var thread : free) syncNotifyAll(thread); // wake it up so it exits
  }
  void checkNotRetired() {   
    if (retired()) throw fail("retired");
  }
 
  // We could do a soft-close here (stop the idle threads, let running threads finish, then end those too, stop accepting new orders)
  // or a hard close (interrupt all threads, stop accepting new orders)
  synchronized public void close() { try {
    retire();
  } catch (Exception __e) { throw rethrow(__e); } }
  
  // run in synchronized block
  void _waitWaitWait() { try {
    do {
      fireCustomerMustWaitAlert();
      wait();
      checkNotRetired();
    } while (empty(free));
  } catch (Exception __e) { throw rethrow(__e); } }
  
  void dO(String text, Runnable r) {
    if (r == null) return;
    new PingSource(this, text).dO(r);
  }
  
  ISleeper_v2 sleeper() { return sleeper; }
}
static interface IAutoCloseableF0<A> extends IF0<A>, AutoCloseable {}
interface IMultiMap<A, B> {
  public Set<A> keySet();
  public Collection<B> get(A a);
  public int size();
  public int keyCount();
}
/*
 * #!
 * Ontopia Engine
 * #-
 * Copyright (C) 2001 - 2013 The Ontopia Project
 * #-
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * !#
 */

// modified by Stefan Reich

// Implements the Set interface more compactly than
// java.util.HashSet by using a closed hashtable.

// Note: equals is always called on the _stored_ object, not the one
// passed as an argument to find(), contains() etc.
// (In case you want to put special magic in your equals() function)

static class UnsynchronizedCompactHashSet<A> extends java.util.AbstractSet<A> {
  protected final static int INITIAL_SIZE = 3;
  public final static double LOAD_FACTOR = 0.75;

  protected final static Object nullObject = new Object();
  protected final static Object deletedObject = new Object();
  protected int elements;
  protected int freecells;
  protected A[] objects;
  
  protected int modCount;
  
  
  UnsynchronizedCompactHashSet() {
    this(INITIAL_SIZE);
  }

  UnsynchronizedCompactHashSet(int size) {
    // NOTE: If array size is 0, we get a
    // "java.lang.ArithmeticException: / by zero" in add(Object).
    objects = (A[]) new Object[(size==0 ? 1 : size)];
    elements = 0;
    freecells = objects.length;
    
      modCount = 0;
    
  }

  UnsynchronizedCompactHashSet(Collection<A> c) {
    this(c.size());
    addAll(c);
  }

  @Override
  public Iterator<A> iterator() {
    return new CompactHashIterator<A>();
  }

  @Override
  public int size() {
    return elements;
  }

  @Override
  public boolean isEmpty() {
    return elements == 0;
  }

  @Override
  public boolean contains(Object o) {
    return find(o) != null;
  }
  
  A find(Object o) {
    if (o == null) o = nullObject;
    
    int hash = o.hashCode();
    int index = (hash & 0x7FFFFFFF) % objects.length;
    int offset = 1;

    // search for the object (continue while !null and !this object)
    while(objects[index] != null &&
          !(objects[index].hashCode() == hash &&
            objects[index].equals(o))) {
      index = ((index + offset) & 0x7FFFFFFF) % objects.length;
      offset = offset*2 + 1;

      if (offset == -1)
        offset = 2;
    }

    return objects[index];
  }
  
  boolean removeIfSame(Object o) {
    A value = find(o);
    if (value == o) {
      remove(value);
      return true;
    }
    return false;
  }

  @Override
  public boolean add(Object o) {
    if (o == null) o = nullObject;

    int hash = o.hashCode();
    int index = (hash & 0x7FFFFFFF) % objects.length;
    int offset = 1;
    int deletedix = -1;
    
    // search for the object (continue while !null and !this object)
    while(objects[index] != null &&
          !(objects[index].hashCode() == hash &&
            objects[index].equals(o))) {

      // if there's a deleted object here we can put this object here,
      // provided it's not in here somewhere else already
      if (objects[index] == deletedObject)
        deletedix = index;
      
      index = ((index + offset) & 0x7FFFFFFF) % objects.length;
      offset = offset*2 + 1;

      if (offset == -1)
        offset = 2;
    }
    
    if (objects[index] == null) { // wasn't present already
      if (deletedix != -1) // reusing a deleted cell
        index = deletedix;
      else
        freecells--;

      
        modCount++;
      
      elements++;

      // here we face a problem regarding generics:
      // add(A o) is not possible because of the null Object. We cant do 'new A()' or '(A) new Object()'
      // so adding an empty object is a problem here
      // If (! o instanceof A) : This will cause a class cast exception
      // If (o instanceof A) : This will work fine

      objects[index] = (A) o;
      
      // do we need to rehash?
      if (1 - (freecells / (double) objects.length) > LOAD_FACTOR)
        rehash();
      return true;
    } else // was there already 
      return false;
  }
  
  @Override
  public boolean remove(Object o) {
    if (o == null) o = nullObject;
    
    int hash = o.hashCode();
    int index = (hash & 0x7FFFFFFF) % objects.length;
    int offset = 1;
    
    // search for the object (continue while !null and !this object)
    while(objects[index] != null &&
          !(objects[index].hashCode() == hash &&
            objects[index].equals(o))) {
      index = ((index + offset) & 0x7FFFFFFF) % objects.length;
      offset = offset*2 + 1;

      if (offset == -1)
        offset = 2;
    }

    // we found the right position, now do the removal
    if (objects[index] != null) {
      // we found the object

      // same problem here as with add
      objects[index] = (A) deletedObject;
      
        modCount++;
      
      elements--;
      return true;
    } else
      // we did not find the object
      return false;
  }
  
  @Override
  public void clear() {
    elements = 0;
    for (int ix = 0; ix < objects.length; ix++)
      objects[ix] = null;
    freecells = objects.length;
    
      modCount++;
    
  }

  @Override
  public Object[] toArray() {
    Object[] result = new Object[elements];
    Object[] objects = this.objects;
    int pos = 0;
    for (int i = 0; i < objects.length; i++)
      if (objects[i] != null && objects[i] != deletedObject) {
        if (objects[i] == nullObject)
          result[pos++] = null;
        else
          result[pos++] = objects[i];
      }
    // unchecked because it should only contain A
    return result;
  }

  // not sure if this needs to have generics
  @Override
  public <T> T[] toArray(T[] a) {
    int size = elements;
    if (a.length < size)
      a = (T[])java.lang.reflect.Array.newInstance(
                                 a.getClass().getComponentType(), size);
    A[] objects = this.objects;
    int pos = 0;
    for (int i = 0; i < objects.length; i++)
      if (objects[i] != null && objects[i] != deletedObject) {
        if (objects[i] == nullObject)
          a[pos++] = null;
        else
          a[pos++] = (T) objects[i];
      }
    return a;
  }
  
  protected void rehash() {
    int garbagecells = objects.length - (elements + freecells);
    if (garbagecells / (double) objects.length > 0.05)
      // rehash with same size
      rehash(objects.length);
    else
      // rehash with increased capacity
      rehash(objects.length*2 + 1);
  }
  
  protected void rehash(int newCapacity) {
    int oldCapacity = objects.length;
    @SuppressWarnings("unchecked")
    A[] newObjects = (A[]) new Object[newCapacity];

    for (int ix = 0; ix < oldCapacity; ix++) {
      Object o = objects[ix];
      if (o == null || o == deletedObject)
        continue;
      
      int hash = o.hashCode();
      int index = (hash & 0x7FFFFFFF) % newCapacity;
      int offset = 1;

      // search for the object
      while(newObjects[index] != null) { // no need to test for duplicates
        index = ((index + offset) & 0x7FFFFFFF) % newCapacity;
        offset = offset*2 + 1;

        if (offset == -1)
          offset = 2;
      }

      newObjects[index] = (A) o;
    }

    objects = newObjects;
    freecells = objects.length - elements;
  }
  
  private class CompactHashIterator<T> implements Iterator<T> {
    private int index;
    private int lastReturned = -1;

    
      private int expectedModCount;
    

    @SuppressWarnings("empty-statement")
    public CompactHashIterator() {
        for (index = 0; index < objects.length &&
                        (objects[index] == null ||
                        objects[index] == deletedObject); index++)
          ;
        
          expectedModCount = modCount;
        
    }

    @Override
    public boolean hasNext() {
        return index < objects.length;
    }

    @SuppressWarnings("empty-statement")
    @Override
    public T next() {
        /*if (modCount != expectedModCount)
          throw new ConcurrentModificationException();*/
        int length = objects.length;
        if (index >= length) {
          lastReturned = -2;
          throw new NoSuchElementException();
        }
  
        lastReturned = index;
        for (index += 1; index < length &&
                         (objects[index] == null ||
                          objects[index] == deletedObject); index++)
          ;
        if (objects[lastReturned] == nullObject)
          return null;
        else
          return (T) objects[lastReturned];
    }

    @Override
    public void remove() {
        
          if (modCount != expectedModCount)
            throw new ConcurrentModificationException();
        
        if (lastReturned == -1 || lastReturned == -2)
          throw new IllegalStateException();
        // delete object
        if (objects[lastReturned] != null && objects[lastReturned] != deletedObject) {
          objects[lastReturned] = (A) deletedObject;
          elements--;
          
            modCount++;
            expectedModCount = modCount; // this is expected; we made the change
          
        }
    }
  }
  
  int capacity() { return objects.length; }
  
  // returns true if there was a shrink
  boolean shrinkToFactor(double factor) {
    if (factor > LOAD_FACTOR)
      throw fail("Shrink factor must be equal to or smaller than load factor: " + factor + " / " + LOAD_FACTOR);
    int newCapacity = max(INITIAL_SIZE, iround(size()/factor));
    if (newCapacity >= capacity()) return false;
    rehash(newCapacity);
    return true;
  }
}
interface IDoublePt {
  public double x_double();
  public double y_double();
}
static interface IVar<A> extends IF0<A> {
  void set(A a);
  A get();
  
  // reified type of value (if available)
  default Class<A> getType() { return null; }
  
  default IF0<A> getter() { return () -> get(); }
  default IVF1<A> setter() { return __1 -> set(__1); }
  
  
  default boolean has() { return get() != null; }
  default void clear() { set(null); }
  
}
static interface WidthAndHeight {
  default int w(){ return getWidth(); }
default int width(){ return getWidth(); }
int getWidth();
  default int h(){ return getHeight(); }
default int height(){ return getHeight(); }
int getHeight();
  
  public default Rect bounds() { return rect(0, 0, getWidth(), getHeight()); }
  
  default int area() { return toInt(areaAsLong()); }
  default long areaAsLong() { return longMul(w(), h()); }
}


abstract static class Sleeping implements AutoCloseable , IFieldsToList{
  Timestamp targetTime;
  Runnable action;
  Sleeping() {}
  Sleeping(Timestamp targetTime, Runnable action) {
  this.action = action;
  this.targetTime = targetTime;}
  public String toString() { return shortClassName_dropNumberPrefix(this) + "(" + targetTime + ", " + action + ")"; }public Object[] _fieldsToList() { return new Object[] {targetTime, action}; }

  long remainingMS() { return targetTime.minus(tsNow()); }
}
// AppendableChain has one "smart" head element (with size counter
// and pointer to the chain's last element), all the other nodes are
// maximally simple (MinimalChain).
// This allows O(1) front insertion, front removal and back insertion
// (not removal at the back though) which is fine for what I need this
// for (event queues).
//
// Stefan Reich, Oct 21

static class AppendableChain<A> extends MinimalChain<A> implements Iterable<A>, IntSize {
  MinimalChain<A> last; // pointer to last element in chain (which may be us)
   final public int getSize(){ return size(); }
public int size() { return size; }
 int size; // total length of chain

  AppendableChain() {} // only used internally
  AppendableChain(A element) {
  this.element = element; size = 1; last = this; }
  
  // intermediate constructor called by itemPlusChain()
  AppendableChain(A element, AppendableChain<A> next) {
  this.next = next;
  this.element = element;
    if (next == null) return;
    
    MinimalChain<A> b = new MinimalChain();
    b.element = next.element;
    b.next = next.next;
    this.next = b;
    last = next.last;
    size = next.size+1;
  }
  
  public String toString() { return str(toList()); }
  
  // append at the end
  boolean add(A a) {
    MinimalChain newLast = new MinimalChain(a);
    last.next = newLast;
    last = newLast;
    ++size;
    return true;
  }
  
  // drop first element
  AppendableChain<A> popFirst() {
    if (next == null) return null;
    element = next.element;
    if (last == next) last = this;
    next = next.next;
    --size;
    return this;
  }
  
  ArrayList<A> toList() {
    ArrayList<A> l = emptyList(size);
    MinimalChain<A> c = this;
    while (c != null) {
      l.add(c.element);
      c = c.next;
    }
    return l;
  }
  
  //public Iterator<A> iterator() { ret toList().iterator(); }
  
  class ACIt extends IterableIterator  < A > {
    MinimalChain<A> c = AppendableChain.this;
    
    public boolean hasNext() {
      return c != null;
    }
    
    public A next() {
      var a = c.element;
      c = c.next;
      return a;
    }
  }
  
  public IterableIterator<A> iterator() {
    return new ACIt();
  }
}
static class MultiSleeper implements ISleeper_v2, AutoCloseable {
  MultiSetMap<Timestamp, Runnable> entries = treeMultiSetMap();
  RestartableCountdown countdown = new RestartableCountdown();
  
  private void check() {
    var time = nextWakeUpTime();
    var action = firstValue(entries);
    countdown.setTargetTime(time == null ? 0 : time.sysTime(), new Runnable() {  public void run() { try { 
      Set<Runnable> toCall;
      synchronized(MultiSleeper.this) {
        toCall = entries.get(time);
        entries.remove(time);
        check();
      }
      pcallFAll(toCall);
    
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "Set<Runnable> toCall;\r\n      synchronized(MultiSleeper.this) {\r\n        toCal..."; }});
  }
  
  private synchronized void removeEntry(Timestamp targetTime, Runnable action) {
    entries.remove(targetTime, action);
  }
  
  // API
  
  synchronized Timestamp nextWakeUpTime() {
    return firstKey(entries);
  }
  
  public synchronized Sleeping doLater(Timestamp targetTime, Runnable r) {
    if (r == null || targetTime == null) return null;
    targetTime = max(targetTime, tsNow());
    entries.put(targetTime, r);
    check();
    return new Sleeping(targetTime, r) {
      public void close() { try {
        removeEntry(targetTime, r);
      } catch (Exception __e) { throw rethrow(__e); } }
    };
  }
  
  public void close() { try {
    { cleanUp(countdown); countdown = null; }
  } catch (Exception __e) { throw rethrow(__e); } }
}
static class Timestamp implements Comparable<Timestamp> , IFieldsToList{
  long date;
  Timestamp(long date) {
  this.date = date;}

public boolean equals(Object o) {
if (!(o instanceof Timestamp)) return false;
    Timestamp __1 =  (Timestamp) o;
    return date == __1.date;
}

  public int hashCode() {
    int h = 2059094262;
    h = boostHashCombine(h, _hashCode(date));
    return h;
  }
  public Object[] _fieldsToList() { return new Object[] {date}; }

  Timestamp() { date = now(); }
  Timestamp(Date date) { if (date != null) this.date = date.getTime(); }
  
  final long toLong(){ return unixDate(); }
long unixDate() { return date; }
  long unixSeconds() { return unixDate()/1000; }
  
  public String toString() { return formatLocalDateWithSeconds(date); }
  
  // Hmm. Should Timestamp(0) be equal to null? Question, questions...
  public int compareTo(Timestamp t) {
    return t == null ? 1 : cmp(date, t.date);
  }
  
  Timestamp plus(Seconds seconds) {
    return plus(seconds == null ? null : seconds.getDouble());
  }
  
  final Timestamp plusSeconds(double seconds){ return plus(seconds); }
Timestamp plus(double seconds) {
    return new Timestamp(date+toMS(seconds));
  }
  
  // returns milliseconds
  long minus(Timestamp ts) {
    return unixDate()-ts.unixDate();
  }
  
  Timestamp minus(long milliseconds) {
    return new Timestamp(date-milliseconds);
  }
  
  long sysTime() {
    return clockTimeToSystemTime(date);
  }
  
  Duration minusAsDuration(Timestamp ts) {
    return Duration.ofMillis(minus(ts));
  }
}


// uses hash sets as inner sets unless subclassed
// uses a hash map as the outer map by default
static class MultiSetMap<A, B>implements IMultiMap<A, B> {
  Map<A, Set<B>> data = new HashMap<A, Set<B>>();
  int size; // number of values
  
  MultiSetMap() {}
  MultiSetMap(boolean useTreeMap) { if (useTreeMap) data = new TreeMap(); }
  MultiSetMap(MultiSetMap<A, B> map) { putAll(map); }
  MultiSetMap(Map<A, Set<B>> data) {
  this.data = data;}

  boolean put(A key, B value) { synchronized(data) {
    Set<B> set = data.get(key);
    if (set == null)
      data.put(key, set = _makeEmptySet());
    if (!set.add(value)) return false;
    { ++size; return true; }
  }}

  boolean add(A key, B value) { return put(key, value); }

  void addAll(A key, Collection<B> values) { synchronized(data) {
    putAll(key, values);
  }}
  
  void addAllIfNotThere(A key, Collection<B> values) { synchronized(data) {
    for (B value : values)
      setPut(key, value);
  }}
  
  void setPut(A key, B value) { synchronized(data) {
    if (!containsPair(key, value))
      put(key, value);
  }}
  
  final boolean contains(A key, B value){ return containsPair(key, value); }
boolean containsPair(A key, B value) { synchronized(data) {
    return get(key).contains(value);
  }}
  
  void putAll(A key, Collection<B> values) { synchronized(data) {
    for (B value : values)
      put(key, value);
  }}

  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;
  }}
  
  List<B> getAndClear(A key) { synchronized(data) {
    List<B> l = cloneList(data.get(key));
    remove(key);
    return l;
  }}

  // return null if empty
  Set<B> getOpt(A key) { synchronized(data) {
    return data.get(key);
  }}

  // returns actual mutable live set
  // creates the set if not there
  Set<B> getActual(A key) { synchronized(data) {
    Set<B> set = data.get(key);
    if (set == null)
      data.put(key, set = _makeEmptySet());
    return set;
  }}
 
  // TODO: this looks unnecessary
  void clean(A key) { synchronized(data) {
    Set<B> list = data.get(key);
    if (list != null && list.isEmpty())
      data.remove(key);
  }}

  final public Set<A> keys(){ return keySet(); }
public Set<A> keySet() { synchronized(data) {
    return data.keySet();
  }}

  void remove(A key) { synchronized(data) {
    size -= l(data.get(key));
    data.remove(key);
  }}

  void remove(A key, B value) { synchronized(data) {
    Set<B> set = data.get(key);
    if (set != null) {
      if (set.remove(value)) {
        --size;
        if (set.isEmpty())
          data.remove(key);
      }
    }
  }}

  void clear() { synchronized(data) {
    data.clear();
    size = 0;
  }}

  boolean containsKey(A key) { synchronized(data) {
    return data.containsKey(key);
  }}

  B getFirst(A key) { synchronized(data) {
    return first(get(key));
  }}
  
  void addAll(MultiSetMap<A, B> map) { putAll(map); }
  
  void putAll(MultiSetMap<A, B> map) { synchronized(data) {
    for (A key : map.keySet())
      putAll(key, map.get(key));
  }}
  
  void putAll(Map<A, B> map) { synchronized(data) {
    if (map != null) for (Map.Entry<A, B> e : map.entrySet())
      put(e.getKey(), e.getValue());
  }}
  
  final public int keyCount(){ return keysSize(); }
public int keysSize() { synchronized(data) { return l(data); }}
  
  // full size
  public int size() { synchronized(data) {
    return size;
  }}
  
  // count values for key
  int getSize(A key) { return l(data.get(key)); }
  int count(A key) { return getSize(key); }
  
  // expensive operation
  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;
  }}
  
  // expensive operation
  A keyForValue(B b) { synchronized(data) {
    for (A key : data.keySet())
      if (data.get(key).contains(b))
        return key;
    return null;
  }}
  
  Map<A, Set<B>> asMap() { synchronized(data) {
    return cloneMap(data);
  }}
  
  public boolean isEmpty() { synchronized(data) { return data.isEmpty(); }}
  
  // override in subclasses
  Set<B> _makeEmptySet() {
    return new HashSet();
  }
  
  Collection<Set<B>> allLists() {
    synchronized(data) {
      return new HashSet(data.values());
    }
  }
  
  List<B> allValues() {
    return concatLists(values(data));
  }
  
  List<Pair<A, B>> allEntries() { synchronized(data) {
    List<Pair<A, B>> l = emptyList(size);
    for (Map.Entry<? extends A, ? extends Set<B>> __0 : _entrySet( data))
      { A a = __0.getKey(); Set<B> set = __0.getValue();  for (B b : set)
        l.add(pair(a, b)); }
    return l;
  }}
  
  Object mutex() { return data; }
  
  public String toString() { return "mm" + str(data); }
  
  Pair<A, B> firstEntry() { synchronized(data) {
    if (empty(data)) return null;
    Map.Entry<A, Set<B>> entry = data.entrySet().iterator().next();
    return pair(entry.getKey(), first(entry.getValue()));
  }}
  
  A firstKey() { synchronized(data) { return main.firstKey(data); }}
  A lastKey() { synchronized(data) { return (A) ((NavigableMap) data).lastKey(); }}
  
  A higherKey(Object a) { synchronized(data) { return (A) ((NavigableMap) data).higherKey(a); }}
}
static class MinimalChain<A> implements Iterable<A> {
  A element;
  MinimalChain<A> next;

  MinimalChain() {}
  MinimalChain(A element) {
  this.element = element;}
  MinimalChain(A element, MinimalChain<A> next) {
  this.next = next;
  this.element = element;}
  
  public String toString() { return str(toList()); }
  
  ArrayList<A> toList() {
    ArrayList<A> l = new ArrayList();
    MinimalChain<A> c = this;
    while (c != null) {
      l.add(c.element);
      c = c.next;
    }
    return l;
  }
  
  void setElement(A a) { element = a; }
  void setNext(MinimalChain<A> next) { this.next = next; }
  
  // TODO: optimize
  public Iterator<A> iterator() { return toList().iterator(); }
  
  A get() { return element; }
}
static class RestartableCountdown implements AutoCloseable {
  java.util.Timer timer;
  long targetTime; // in sys time

  
  long /*firings,*/ totalSleepTime; // stats
  
  
  synchronized void setTargetTime(long targetTime, Runnable action) {
    if (targetTime <= 0)
      stop();
    else if (targetTime != this.targetTime) {
      start(targetTime-sysNow(), action);
      this.targetTime = targetTime;
    }
  }
  
  // stops the countdown and restarts it
  synchronized void start(long delayMS, Object action) {
    stop();
    if (delayMS <= 0)
      { startThread(new Runnable() {  public void run() { try {  callF(action); 
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "callF(action);"; }}); }
    else {
      
        totalSleepTime += delayMS;
      
      timer = doLater_daemon(delayMS, action);
      targetTime = sysNow()+delayMS;
    }
  }
  
  void start(double delaySeconds, Object action) {
    start(toMS(delaySeconds), action);
  }
  
  synchronized void stop() {
    cancelTimer(timer);
    timer = null;
    targetTime = 0;
  }
  
  public void close() { stop(); }
}
static class Seconds implements Comparable<Seconds> , IFieldsToList{
  double seconds;
  Seconds() {}
  Seconds(double seconds) {
  this.seconds = seconds;}

public boolean equals(Object o) {
if (!(o instanceof Seconds)) return false;
    Seconds __1 =  (Seconds) o;
    return seconds == __1.seconds;
}

  public int hashCode() {
    int h = -660217249;
    h = boostHashCombine(h, _hashCode(seconds));
    return h;
  }
  public Object[] _fieldsToList() { return new Object[] {seconds}; }

  final double get(){ return seconds(); }
final double getDouble(){ return seconds(); }
double seconds() { return seconds; }
  
  public String toString() { return formatDouble(seconds, 3) + " s"; }
  
  public int compareTo(Seconds s) {
    return cmp(seconds, s.seconds);
  }
  
  Seconds div(double x) { return new Seconds(get()/x); }
  Seconds minus(Seconds x) { return new Seconds(get()-x.get()); }
}
/*sinterface ISleeper extends ISleeper_v2, AutoCloseable {
  void doLater(long targetSysTime, Runnable r); // call only once
}*/



static boolean classIsExportedTo(Class c, java.lang.Module destModule) {
  if (c == null || destModule == null) return false;
  
  java.lang.Module srcModule = c.getModule();
  String packageName = c.getPackageName();
  return srcModule.isExported(packageName, destModule);
}


static Set<Class> allInterfacesImplementedBy(Object o) {
  return allInterfacesImplementedBy(_getClass(o));
}

static Set<Class> allInterfacesImplementedBy(Class c) {
  if (c == null) return null;
  HashSet<Class> set = new HashSet();
  allInterfacesImplementedBy_find(c, set);
  return set;
}

static 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 Method findMethod(Object o, String method, Object... args) {
  return findMethod_cached(o, method, args);
}

static 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 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 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 <A> List<A> syncList() {
  return synchroList();
}



static <A> List<A> syncList(List<A> l) {
  return synchroList(l);
}


// firstDelay = delay
static FixedRateTimer doEvery_daemon_highPriority(long delay, final Object r) {
  return doEvery_daemon_highPriority(delay, delay, r);
}

static FixedRateTimer doEvery_daemon_highPriority(long delay, long firstDelay, final Object r) {
  return doEvery_daemon(delay, firstDelay, new Runnable() {  public void run() { try { 
    highThreadPriority();
    callF(r);
  
} catch (Exception __e) { throw rethrow(__e); } }  public String toString() { return "highThreadPriority();\r\n    callF(r);"; }});
}

static FixedRateTimer doEvery_daemon_highPriority(double delaySeconds, final Object r) {
  return doEvery_daemon_highPriority(toMS(delaySeconds), r);
}


static DialogIO talkTo(int port) {
  return talkTo("localhost", port);
}

static int talkTo_defaultTimeout = 10000; // This is the CONNECT timeout
static int talkTo_timeoutForReads = 0; // Timeout waiting for answers (0 = no timeout)

static ThreadLocal<Map<String, DialogIO>> talkTo_byThread = new ThreadLocal();

static 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 class talkTo_IO extends DialogIO { 
  String ip;
  int port;
  Socket s;
  Writer w;
  BufferedReader in;
  
  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); } }
  
  boolean isLocalConnection() {
    return s.getInetAddress().isLoopbackAddress();
  }
  
  boolean isStillConnected() {
    return !(eos || s.isClosed());
  }
  
  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); } }
  
  String readLineImpl() { try {
    return in.readLine();
  } catch (Exception __e) { throw rethrow(__e); } }
  
  public void close() {
    try {
      if (!noClose) s.close();
    } catch (IOException e) {
      // whatever
    }
  }
  
  Socket getSocket() {
    return s;
  }
}


static AutoCloseable tempAfterwards(final Object r) {
  return new AutoCloseable() {
    public void close() {
      callF(r);
    }
  };
}


  static String format(String pat, Object... args) {
    return format3(pat, args);
  }



static void printShortException(Throwable e) {
  print(exceptionToStringShort(e));
}

static void printShortException(String s, Throwable e) {
  print(s, exceptionToStringShort(e));
}


static List<String> quoteAll(String[] l) {
  return quoteAll(asList(l));
}

static List<String> quoteAll(Collection<String> l) {
  List<String> x = new ArrayList();
  for (String s : l)
    x.add(quote(s));
  return x;
}


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


static 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 Object metaGet(IMeta o, Object key) {
  return metaMapGet(o, key);
}

static Object metaGet(Object o, Object key) {
  return metaMapGet(o, key);
}

static Object metaGet(String key, IMeta o) {
  return metaMapGet(o, key);
}

static Object metaGet(String key, Object o) {
  return metaMapGet(o, key);
}


static Object metaMapGet(IMeta o, Object key) {
  return o == null ? null : o.metaGet(key); // We now let the object itself do it (overridable!)
}

static Object metaMapGet(Object o, Object key) {
  return metaMapGet(toIMeta(o), key);
}


static void metaPut(IMeta o, Object key, Object value) {
  metaMapPut(o, key, value);
}



static void metaPut(Object o, Object key, Object value) {
  metaMapPut(o, key, value);
}


static Map convertObjectMetaToMap(IMeta o) { return convertObjectMetaToMap(o, () -> makeObjectMetaMap()); }
static Map convertObjectMetaToMap(IMeta o, IF0<Map> createEmptyMap) {
  if (o == null) return null;
  
  // The following shortcut depends on the assumption that a meta field never reverts
  // to null when it was a map
  
    Object meta = o._getMeta();
    if (meta instanceof Map) return ((Map) meta);
  
  
  // non-shortcut path (create meta)
   var mutex = tempMetaMutex(o); try {
  var actualMutex = mutex.get();
  synchronized(actualMutex) {
    meta = o._getMeta();
    if (meta instanceof Map) return ((Map) meta);
    Map map = createEmptyMap.get();
    if (meta != null) map.put("previousMeta" , meta);
    o._setMeta(map);
    return map;
  }
} finally { _close(mutex); }}


static <A, B> void syncMapPutOrRemove(Map<A, B> map, A key, B value) {
  syncMapPut2(map, key, value);
}


static float clamp(float x, float a, float b) {
  return x < a ? a : x > b ? b : x;
}

static double clamp(double x, double a, double b) {
  return x < a ? a : x > b ? b : x;
}

static int clamp(int x, int a, int b) {
  return x < a ? a : x > b ? b : x;
}

static long clamp(long x, long a, long b) {
  return x < a ? a : x > b ? b : x;
}


static void add(BitSet bs, int i) {
  bs.set(i);
}

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


static void add(Container c, Component x) {
  addToContainer(c, x);
}


static long add(AtomicLong l, long b) {
  return l.addAndGet(b);
}


static <A> A _print(String s, A a) {
  return print(s, a);
}

static <A> A _print(A a) {
  return print(a);
}

static void _print() {
  print();
}


static boolean _eq(Object a, Object b) {
  return eq(a, b);
}


static String toString(Object o) {
  return strOrNull(o);
}


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

static String formatDouble(double d) {
  return str(d);
}




static double ratioToPercent(double x, double y) {
  return x*100/y;
}


  static 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 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));
  }
  



static <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 <A, B> MultiMap<A, B> putAll(MultiMap<A, B> a, Map<? extends A,? extends B> b) {
  if (a != null) a.putAll((Map) b);
  return a;
}


static <A, B> Map<A, B> putAll(Map<A, B> a, Object... b) {
  if (a != null)
    litmap_impl(a, b);
  return a;
}



static <A> A getAndClear(IVar<A> v) {
  A a = v.get();
  v.set(null);
  return a;
}


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

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




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





static <A, B> int keysSize(MultiMap<A, B> mm) {
  return lKeys(mm);
}


static <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 <A, B> Map<A, B> cloneMap(Map<A, B> map) {
  if (map == null) return new HashMap();
  // assume mutex is equal to map
  synchronized(map) {
    return map instanceof TreeMap ? new TreeMap((TreeMap) map) // copies comparator
      : map instanceof LinkedHashMap ? new LinkedHashMap(map)
      : new HashMap(map);
  }
}

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


static <A, B, C extends Collection<B>> List<B> allValues(Map<A, C> map) {
  List<B> out = new ArrayList();
  for (var l : values(map))
    addAll(out, l);
  return out;
}


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


// TODO: use actualUserHome()?
// (there was a problem with onLocallyInferiorJavaX() always triggering inside #1013896)

static File pathToJavaxJar() {
  
    
    IResourceLoader rl = vm_getResourceLoader();
    if (rl != null)
      return rl.pathToJavaXJar();
    
    
    return pathToJavaxJar_noResourceLoader();
  
  
}
    
static File pathToJavaxJar_noResourceLoader() { try {
  
    int x = latestInstalledJavaX();
    File xfile = new File(userHome(), ".javax/x" + Math.max(x, 30) + ".jar");
    if (!xfile.isFile()) {
      print("Saving " + f2s(xfile));
      String url = x30JarServerURL();
      byte[] data = loadBinaryPage(url);
      if (data.length < 1000000)
        throw fail("Could not load " + url);
      saveBinaryFile(xfile.getPath(), data);
    }
    return xfile;
  
  
  
} catch (Exception __e) { throw rethrow(__e); } }


static boolean hasNext(Iterator it) {
  return it != null && it.hasNext();
}


static Method hashMap_findKey_method;

static <A, B> A hashMap_findKey(HashMap<A, B> map, Object key) { try {
  if (hashMap_findKey_method == null)
    hashMap_findKey_method = findMethodNamed(HashMap.class, "getNode");
  Map.Entry<A, B> entry = (Map.Entry) hashMap_findKey_method.invoke(map, hashMap_internalHash(key), key);
  // java.util.Map.Entry<A, B> entry = (java.util.Map.Entry) call(hash, 'getNode, hashMap_internalHash(key), wkey);
  return entry == null ? null : entry.getKey();
} catch (Exception __e) { throw rethrow(__e); } }


static String find(String pattern, String text) {
  Matcher matcher = Pattern.compile(pattern).matcher(text);
  if (matcher.find())
    return matcher.group(1);
  return null;
}

static <A> A find(Collection<A> c, Object... data) {
  for (A x : c)
    if (checkFields(x, data))
      return x;
  return null;
}


static Set<java.util.Timer> _registerTimer_list = newWeakHashSet();

static void _registerTimer(java.util.Timer timer) {
  _registerTimer_list.add(timer);
}

static void cleanMeUp__registerTimer() {
  cancelTimers(getAndClearList(_registerTimer_list));
}


// firstDelay = delay
static FixedRateTimer doEvery(long delay, final Object r) {
  return doEvery(delay, delay, r);
}

static 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);
}

// reversed argument order for fun
static FixedRateTimer doEvery(double initialSeconds, double delaySeconds, final Object r) {
  return doEvery(toMS(delaySeconds), toMS(initialSeconds), r);
}

static FixedRateTimer doEvery(double delaySeconds, final Object r) {
  return doEvery(toMS(delaySeconds), r);
}



static String a(String noun) {
  if (eq(noun, "")) return "?";
  return ("aeiou".indexOf(noun.charAt(0)) >= 0 ? "an " : "a ") + noun;
}

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



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


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


static String joinNemptiesWithColon(String... strings) {
  return joinNempties(": ", strings);
}

static String joinNemptiesWithColon(Collection<String> strings) {
  return joinNempties(": ", strings);
}


static String commaCombine(Object... l) {
  return joinNemptiesWithComma(flattenCollectionsAndArrays(l));
}


static int boostHashCombine(int a, int b) {
  return a ^ (b + 0x9e3779b9 + (a << 6) + (a >>> 2));
  
  // OLD (changed) 2022/3/10: ret a ^ (b + 0x9e3779b9 + (a << 6) + (a >> 2));
}


static WidthAndHeight widthAndHeight(BufferedImage image) {
  return image == null ? null : widthAndHeight(image.getWidth(), image.getHeight());
}

static WidthAndHeight widthAndHeight(int w) { return widthAndHeight(w, w); }
static WidthAndHeight widthAndHeight(int w, int h) {
  return new WidthAndHeightFinal(w, h);
}


static double sqrt(double x) {
  return Math.sqrt(x);
}


static Pt ptMinus(Pt a, Pt b) {
  if (b == null) return a;
  return new Pt(a.x-b.x, a.y-b.y);
}


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


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


static 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 java.util.Timer doLater(double delaySeconds, final Object r) {
  return doLater(toMS(delaySeconds), r);
}


static Timestamp sysTimeToTimestamp(long now) {
  return now == 0 ? null : new Timestamp(now - clockToSysTimeDiff());
}


static Timestamp tsNow() {
  return new Timestamp();
}


static volatile int numberOfCores_value;

static int numberOfCores() {
  if (numberOfCores_value == 0)
    numberOfCores_value = Runtime.getRuntime().availableProcessors();
  return numberOfCores_value;
}


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

static long random(long n) { return random(n, defaultRandomGenerator()); }
static long random(long n, Random r) {
  return random(r, n);
}

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

static long random(Random r, long n) {
  return n <= 0 ? 0 : getRandomizer(r).nextLong(n);
}

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

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

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

// min <= value < max
static int random(int min, int max) {
  return min+random(max-min);
}

// min <= value < max
static long random(long min, long max) {
  return min+random(max-min);
}

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

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

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

static <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 <A, B> Pair<A, B> random(Map<A, B> map) {
  return entryToPair(random(entries(map)));
}


static <A> A popFirst(List<A> l) {
  if (empty(l)) return null;
  A a = first(l);
  l.remove(0);
  return a;
}

static <A> A popFirst(Collection<A> l) {
  if (empty(l)) return null;
  A a = first(l);
  l.remove(a);
  return a;
}

static <A, B> Pair<A, B> popFirst(Map<A, B> map) {
  if (map == null) return null;
  var it = map.entrySet().iterator();
  if (!it.hasNext()) return null;
  var p = mapEntryToPair(it.next());
  it.remove();
  return p;
}

static <A> List<A> popFirst(int n, List<A> l) {
  List<A> part = cloneSubList(l, 0, n);
  removeSubList(l, 0, n);
  return part;
}

static <A> AppendableChain<A> popFirst(AppendableChain<A> a) {
  return a == null ? null : a.popFirst();
}


// Yes the nomenclature is a bit illogical

static <A> Chain<A> chainPlus(Chain<A> chain, A a) {
  return new Chain<A>(a, chain);
}

static <A> Chain<A> chainPlus(Chain<A> chain, A... l) {
  for (A a : unnullForIteration(l))
    chain = chainPlus(chain, a);
  return chain;
}

static <A> ReverseChain<A> chainPlus(ReverseChain<A> chain, A a) {
  return new ReverseChain<A>(chain, a);
}

static <A> ReverseChain<A> chainPlus(ReverseChain<A> chain, A... l) {
  for (A a : unnullForIteration(l))
    chain = chainPlus(chain, a);
  return chain;
}


static <A> AppendableChain<A> chainPlus(AppendableChain<A> chain, A a) {
  if (chain == null) return new AppendableChain<A>(a);
  chain.add(a);
  return chain;
}

static <A> AppendableChain<A> chainPlus(AppendableChain<A> chain, A... l) {
  for (A a : unnullForIteration(l))
    chain = chainPlus(chain, a);
  return chain;
}




static String n2(long l) { return formatWithThousands(l); }
static String n2(AtomicLong l) { return n2(l.get()); }
static String n2(Collection l) { return n2(l(l)); }
static String n2(Map map) { return n2(l(map)); }

static String n2_getPlural(String singular) {
  //ret singular + "s";
  return plural(singular);
}

static String n2(double l, String singular) {
  return empty(singular) ? str(l) : n2(l, singular, n2_getPlural(singular));
}

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

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

static String n2(long l, String singular) {
  return empty(singular) ? n2(l) : n_fancy2(l, singular, n2_getPlural(singular));
}

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

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

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

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

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

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




  static String n2(IMultiMap mm, String singular) { return n2(mm, singular, n2_getPlural(singular)); }
static String n2(IMultiMap mm, String singular, String plural) {
    return n_fancy2(l(mm), singular, plural);
  }



static void syncNotifyAll(Object o) {
  if (o != null) synchronized(o) { o.notifyAll(); }
}


static int getWidth(Component c) {
  return c == null ? 0 : (int) swingCall(c, "getWidth");
}


static int getHeight(Component c) {
  return c == null ? 0 : (int) swingCall(c, "getHeight");
}


static Rect rect(int x, int y, int w, int h) {
  return new Rect(x, y, w, h);
}

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

static Rect rect(int w, int h) {
  return new Rect(0, 0, w, h);
}




static long longMul(long a, long b) {
  return a*b;
}


static <A, B> MultiSetMap<A, B> treeMultiSetMap() {
  return new MultiSetMap(true);
}

static <A, B> MultiSetMap<A, B> treeMultiSetMap(Comparator<A> comparator) {
  return new MultiSetMap(new TreeMap<A, Set<B>>(comparator));
}


static <A, B> B firstValue(Map<A, B> map) {
  return first(values(map));
}


static <A, B> B firstValue(MultiSetMap<A, B> map) {
  return map == null ? null : first(firstValue(map.data));
}



static <A, B> B firstValue(MultiMap<A, B> map) {
  return map == null ? null : first(firstValue(map.data));
}



static <A, B> A firstKey(Map<A, B> map) {
  return first(keys(map));
}


static <A, B> A firstKey(IMultiMap<A, B> map) {
  return map == null ? null : first(map.keySet());
}



static boolean cleanUp_interruptThreads = false; // experimental

static 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 : keysList((Map) c)) cleanUp(o);
    for (Object o : valuesList((Map) c)) cleanUp(o);
    syncClear((Map) c);
    return;
  }
  //if (!(c instanceof Class)) ret;
  
  try {
    // revoke license
    
    preCleanUp(c);
    
    // unpause
    
    setOpt_raw(c, "ping_pauseAll", false);
    
    // call custom cleanMeUp() and cleanMeUp_*() functions
    
    innerCleanUp(c);
        
    // Java spec says finalize should only be called by GC,
    // but we care to differ.
    // Edit: Not anymore (illegal access warnings)
    /*if (isTrue(vmMap_get('callFinalize)))
      pcallOpt(c, "finalize");*/

    // remove all virtual bots (hope this works)
    
    List androids = (List) getOpt(c, "record_list");
    for (Object android : unnull(androids))
      pcallOpt(android, "dispose"); // heck we'll dispose anything

    // sub-cleanup
    
    List<WeakReference> classes =  (List<WeakReference>) (getOpt(c, "hotwire_classes"));
    if (classes != null)
      for (WeakReference cc : classes) { try {
        cleanUp(cc.get());
      } catch (Throwable __e) { pcallFail(__e); }}
      
    // interrupt all threads (experimental, they might be doing cleanup?)
    
    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) { pcallFail(__e); }
  
  setOpt_raw(c, "cleaningUp_flag" , false);
  if (c instanceof Class && ((Class) c).getName().equals("main"))
    retireClassLoader(((Class) c).getClassLoader());
 }

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




static String formatLocalDateWithSeconds(long time) {
  return localDateWithSeconds(time);
}



static String formatLocalDateWithSeconds() {
  return localDateWithSeconds();
}


static BigInteger plus(BigInteger a, BigInteger b) {
  return a.add(b);
}

static BigInteger plus(BigInteger a, long b) {
  return a.add(bigint(b));
}

static long plus(long a, long b) { return a+b; }
static int plus(int a, int b) { return a+b; }
static float plus(float a, float b) { return a+b; }
static double plus(double a, double b) { return a+b; }


static long clockTimeToSystemTime(long now) {
  return now == 0 ? 0 : now + clockToSysTimeDiff();
}


static <A> List<A> minus(Collection<A> a, Object... b) {
  Set set = asSet(b);
  List l = new ArrayList();
  for (Object s : unnull(a))
    if (!set.contains(s))
      l.add(s);
  return l;
}

static BigInteger minus(BigInteger a, BigInteger b) {
  return a.subtract(b);
}


static Complex minus(Complex c) {
  return c == null ? null : complex(-c.re(), -c.im());
}



  static int minus(int a, int b) {
    return a-b;
  }
  
  static int minus(int a) {
    return -a;
  }


  static double minus(double a, double b) {
    return a-b;
  }
  
  static double minus(double a) {
    return -a;
  }


  static long minus(long a, long b) {
    return a-b;
  }
  
  static long minus(long a) {
    return -a;
  }




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


static <A, B> Map.Entry<A, B> firstEntry(Map<A, B> map) {
  return empty(map) ? null : first(map.entrySet());
}


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


static java.util.Timer doLater_daemon(long delay, final Object r) {
  final java.util.Timer timer = new java.util.Timer(true);
  timer.schedule(timerTask(r, timer), delay);
  return timer;
}

static java.util.Timer doLater_daemon(double delaySeconds, final Object r) {
  return doLater_daemon(toMS(delaySeconds), r);
}



static void cancelTimer(javax.swing.Timer timer) {
  if (timer != null) timer.stop();
}


static void cancelTimer(java.util.Timer timer) {
  if (timer != null) timer.cancel();
}

static 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) { pcallFail(__e); }}
}


static int seconds() {
  return seconds(java.util.Calendar.getInstance());
}

static int seconds(java.util.Calendar c) {
  return c.get(java.util.Calendar.SECOND);
}




static 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 void highThreadPriority() {
  currentThread().setPriority(Thread.NORM_PRIORITY+1);
}


static boolean isLocalhost(String ip) {
  return isLoopbackIP(ip) || eqic(ip, "localhost");
}


static DialogIO talkToThisVM() {
  return new talkToThisVM_IO();
}

static class talkToThisVM_IO extends DialogIO { 
  List<String> answers = ll(thisVMGreeting());
  
  boolean isLocalConnection() { return true; }
  boolean isStillConnected() { return true; }
  int getPort() { return vmPort(); }
  
  void sendLine(String line) {
    answers.add(or2(sendToThisVM_newThread(line), "?"));
  }
  
  String readLineImpl() { try {
    return popFirst(answers);
  } catch (Exception __e) { throw rethrow(__e); } }
  
  public void close() {}
  Socket getSocket() { return null; }
}


static IMeta toIMeta(Object o) {
  return initIMeta(o);
}


static Map makeObjectMetaMap() {
  //ret synchroLinkedHashMap();
  return new CompactHashMap();
}


static IAutoCloseableF0 tempMetaMutex(IMeta o) {
  return o == null ? null : o._tempMetaMutex();
}


static <A, B> void syncMapPut2(Map<A, B> map, A key, B value) {
  if (map != null && key != null) synchronized(collectionMutex(map)) {
    if (value != null) map.put(key, value);
    else map.remove(key);
  }
}


static void addToContainer(Container a, Component... b) {
  if (a == null) return;
  { swing(() -> { 
    for (Component c : unnullForIteration(b))
      if (c != null) 
        a.add(c);
  }); }
}


static String rep(int n, char c) {
  return repeat(c, n);
}

static String rep(char c, int n) {
  return repeat(c, n);
}

static <A> List<A> rep(A a, int n) {
  return repeat(a, n);
}

static <A> List<A> rep(int n, A a) {
  return repeat(n, a);
}



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

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


static 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 boolean structure_showTiming, structure_checkTokenCount;

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

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

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

// leave to false, unless unstructure() breaks
static boolean structure_allowShortening = false;

// info on how to serialize objects of a certain class
static class structure_ClassInfo<A> {
  Class c;
  String shortName;
  List<Field> fields;
  Method customSerializer;
  IVF1<Object> serializeObject; // can be set by caller of structure function
  boolean special = false; // various special classes
  boolean nullInstances = false; // serialize all instances as null (e.g. lambdas/anonymous classes)
  boolean javafy = false; // always convert to "j ..."
  Object emptyInstance; // to grab default field values from
  
  public String toString() {
    return commaCombine(
      "Class " + className(c),
      stringIf("special", special),
      stringIf("customSerializer", customSerializer != null),
      stringIf("javafy", javafy),
      stringIf("nullInstances", nullInstances));
  }
  
  void nullInstances(boolean b) {
    this.nullInstances = b;
    if (b) special = true;
  }
  
  void javafy(boolean b) {
    this.javafy = b;
    if (b) special = true;
  }
  
  // overridable - return true if you wrote the object
  boolean handle(A o) { return false; }
}

static class structure_Data {
  PrintWriter out;
  int stringSizeLimit;
  int shareStringsLongerThan = 20;
  boolean noStringSharing = false;
  boolean storeBaseClasses = false;
  boolean honorFieldOrder = true;
  String mcDollar = actualMCDollar();
   final public structure_Data setWarnIfUnpersistable(boolean warnIfUnpersistable){ return warnIfUnpersistable(warnIfUnpersistable); }
public structure_Data warnIfUnpersistable(boolean warnIfUnpersistable) { this.warnIfUnpersistable = warnIfUnpersistable; return this; }  final public boolean getWarnIfUnpersistable(){ return warnIfUnpersistable(); }
public boolean warnIfUnpersistable() { return warnIfUnpersistable; }
 boolean warnIfUnpersistable = true;
   final public structure_Data setStackTraceIfUnpersistable(boolean stackTraceIfUnpersistable){ return stackTraceIfUnpersistable(stackTraceIfUnpersistable); }
public structure_Data stackTraceIfUnpersistable(boolean stackTraceIfUnpersistable) { this.stackTraceIfUnpersistable = stackTraceIfUnpersistable; return this; }  final public boolean getStackTraceIfUnpersistable(){ return stackTraceIfUnpersistable(); }
public boolean stackTraceIfUnpersistable() { return stackTraceIfUnpersistable; }
 boolean stackTraceIfUnpersistable = true;
  
  // skip a field if it has the default value defined in the class
  // -slower, and may cause issues with schema evolution
  // -OTOH, it can serialize null values for a field with default non-null value
   final public structure_Data setSkipDefaultValues(boolean skipDefaultValues){ return skipDefaultValues(skipDefaultValues); }
public structure_Data skipDefaultValues(boolean skipDefaultValues) { this.skipDefaultValues = skipDefaultValues; return this; }  final public boolean getSkipDefaultValues(){ return skipDefaultValues(); }
public boolean skipDefaultValues() { return skipDefaultValues; }
 boolean skipDefaultValues = false;
  
  structure_Data d() { return this; }

  transient  IF1<Field, Boolean> shouldIncludeField;
boolean shouldIncludeField(Field f) { return shouldIncludeField != null ? shouldIncludeField.get(f) : shouldIncludeField_base(f); }
final boolean shouldIncludeField_fallback(IF1<Field, Boolean> _f, Field f) { return _f != null ? _f.get(f) : shouldIncludeField_base(f); }
boolean shouldIncludeField_base(Field f) { return true; }

  IdentityHashMap<Object, Integer> seen = new IdentityHashMap();
  //new BitSet refd;
  HashMap<String, Integer> strings = new HashMap();
  HashSet<String> concepts = new HashSet();
  HashMap<Class, structure_ClassInfo> infoByClass = new HashMap();
  
  // wrapper for _persistenceInfo field or _persistenceInfo method
  // by class (taking the object instance)
  HashMap<Class, IF1<Object, Map>> persistenceInfo = new HashMap();
  
  int n; // token count
  List<Runnable> stack = new ArrayList();
  
  // append single token
  structure_Data append(String token) { out.print(token); ++n; return this; }
  structure_Data append(int i) { out.print(i); ++n; return this; }
  
  // append multiple tokens
  structure_Data append(String token, int tokCount) { out.print(token); n += tokCount; return this; }
  
  // extend last token
  structure_Data app(String token) { out.print(token); return this; }
  structure_Data app(int i) { out.print(i); return this; }
  structure_Data app(char c) { out.print(c); return this; }

  structure_ClassInfo infoForClass(Class c) {
    structure_ClassInfo info = infoByClass.get(c);
    if (info == null) info = newClass(c);
    return info;
  }
  
  transient  IF1<String, String> realShortName;
String realShortName(String name) { return realShortName != null ? realShortName.get(name) : realShortName_base(name); }
final String realShortName_fallback(IF1<String, String> _f, String name) { return _f != null ? _f.get(name) : realShortName_base(name); }
String realShortName_base(String name) {
    return dropPrefix("main$",
      dropPrefix("loadableUtils.utils$",
        dropPrefix(mcDollar, name)));
  }
  
  // called when a new class is detected
  // can be overridden by clients
  structure_ClassInfo newClass(Class c) {
    // special classes here!
    
    var d = d();
    boolean isJavaXClass = isJavaXClassName(c.getName(), mcDollar);
     
    
    if (c == String.class)
      return new structure_ClassInfo<String>() {
        @Override boolean handle(String o) {
          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 true;
        }
      };

    
    if (c == File.class)
      return new structure_ClassInfo<File>() {
        @Override boolean handle(File o) {
          append("File ").append(quote(o.getPath()));
          return true;
        }
      };

    if (!isJavaXClass) {
      if (isSubClassOf(c, Set.class))
        return new structure_ClassInfo<Set>() {
          @Override boolean handle(Set o) {
            writeSet(o);
            return true;
          }
        };

      if (isSubClassOf(c, Collection.class))
        return new structure_ClassInfo<Collection>() {
          @Override boolean handle(Collection o) {
            writeCollection(o);
            return true;
          }
        };
        
      if (isSubClassOf(c, Map.class))
        return new structure_ClassInfo<Map>() {
          @Override boolean handle(Map o) {
            writeMap(o);
            return true;
          }
        };
    }

    structure_ClassInfo info = new structure_ClassInfo();
    info.c = c;
    infoByClass.put(c, info);
    
    String name = c.getName();
    String shortName = realShortName(name);
    if (startsWithDigit(shortName)) shortName = name; // for anonymous classes
    info.shortName = shortName;
    
    try {
      if (isSyntheticOrAnonymous(c)) {
        info.nullInstances(true);
        return info;
      }
      
      if (c.isEnum()) {
        info.special = true;
        return info;
      }
      
      

      if (c.isArray()) {
        // info.special?
        return info;
      }
      
      if ((info.customSerializer = findMethodNamed(c, "_serialize"))
        != null) info.special = true;
        
      if (storeBaseClasses) {
        Class sup = c.getSuperclass();
        if (sup != Object.class) {
          append("bc ");
          append(shortDynClassNameForStructure(c));
          out.print(" ");
          append(shortDynClassNameForStructure(sup));
          out.print(" ");
          infoForClass(sup); // transitively write out superclass relations
        }
      }
      
      if (eqOneOf(name, "java.awt.Color", "java.lang.ThreadLocal"))
        info.javafy(true);
      else if (name.startsWith("sun") || !isPersistableClass(c)) {
        info.javafy(true);
        if (warnIfUnpersistable) {
          String msg = "Class not persistable: " + c + " (anonymous or no default constructor), referenced from " + last(stack);
          if (stackTraceIfUnpersistable)
            printStackTrace(new Throwable(msg));
          else
            print(msg);
        }
      } else if (skipDefaultValues) {
        var ctor = getDefaultConstructor(c);
        if (ctor != null)
          info.emptyInstance = invokeConstructor(ctor);
      }
    } catch (Throwable e) { printStackTrace(e);
      info.nullInstances(true);
    }
    
    return info;
  }
  
  void setFields(structure_ClassInfo info, List<Field> fields) { 
    info.fields = fields;
  }
  
  void writeObject(Object o, String shortName, Map<String, Object> fv) {
    String singleField = fv.size() == 1 ? first(fv.keySet()) : null;
  
    append(shortName);
    n += countDots(shortName)*2; // correct token count
    
  
    int l = n;
    Iterator it = fv.entrySet().iterator();
    
    class WritingObject implements Runnable {
      String lastFieldWritten;
      
      public void run() { try {
        if (!it.hasNext()) {
          if (n != l)
            append(")");
        } else {
          Map.Entry e =  (Map.Entry) (it.next());
          append(n == l ? "(" : ", ");
          append(lastFieldWritten = (String) e.getKey()).append("=");
          stack.add(this);
          structure_1(e.getValue(), structure_Data.this);
        }
      } catch (Exception __e) { throw rethrow(__e); } }
      
      public String toString() { return shortName + "." + lastFieldWritten; }
    }
    
    stack.add(new WritingObject());
  }
  
  void writeMap(Map o) {
    var d = this;
    String name = o.getClass().getName();
    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 = cloneMap((Map) o).entrySet().iterator();
    
    class WritingMap implements Runnable {
      boolean v = false;
      Map.Entry e;
      
      public String toString() {
        return renderVars("WritingMap", "e" , mapEntryToPair(e), "v" , !v);
      }
      
      public void run() { try {
        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);
          }
        }
      } catch (Exception __e) { throw rethrow(__e); } }
    }
    
    d.stack.add(new WritingMap());
  }

  void writeSet(Set o) {
    var d = this;
    String name = o.getClass().getName();
    
    /*O set2 = unwrapSynchronizedSet(o);
    if (set2 != o) {
      d.append("sync");
      o = set2;
    } TODO */
    
    if (o instanceof TreeSet) {
      d.append(isCISet_gen(o) ? "ciset" : "treeset");
      structure_1(new ArrayList(o), d);
      return;
    }
    
    // assume it's a HashSet or LinkedHashSet
    d.append(o instanceof LinkedHashSet ? "lhs" : "hashset");
    structure_1(new ArrayList(o), d);
  }

  void writeCollection(Collection o) {
    var d = this;
    String name = o.getClass().getName();
    
     
    
    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("[");
    int l = d.n;
    Iterator it = cloneList(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.stack.add..."; }});
  }
} // end of class structure_Data

static void structure_1(Object o, structure_Data d) { try {
  if (o == null) { d.append("null"); return; }
  
  Class c = o.getClass();
  boolean concept = false;
  
  structure_ClassInfo info = d.infoForClass(c);
  
   

  boolean isJavaXName = isJavaXClassName(c.getName(), d.mcDollar);
  
  boolean referencable = isJavaXName &&
    !(o instanceof Number || o instanceof Character || o instanceof Boolean)
    || o instanceof Collection || o instanceof Map
    || o instanceof Rectangle;
    
   
  
  if (referencable) {
    Integer ref = d.seen.get(o);
    if (ref != null) {
       
      //d.refd.set(ref);
      d.append("t").app(ref);
      return;
    }
    
    d.seen.put(o, d.n); // record token number
     
  }
      
  if (info.handle(o)) {
     
    return;
  }
  
  if (info.special) {
    if (info.javafy) {
      d.append("j ").append(quote(str(o))); return; // This is not unstructure-able except for java.awt.Color
    }
    
    if (c.isEnum()) {
      d.append("enum ");
      d.append(info.shortName);
      d.out.append(' ');
      d.append(((Enum) o).ordinal());
      return;
    }
    
    if (info.customSerializer != null) {
      // custom serialization (_serialize method)
      Object o2 = invokeMethod(info.customSerializer, o);
      if (o2 == o) {} // bail out to standard serialization
      else {
        d.append("cu ");
        String name = c.getName();
        String shortName = d.realShortName(name);
        d.append(shortName);
        d.out.append(' ');
        structure_1(o2, d);
        return;
      }
    } else if (info.nullInstances) { d.append("null"); return; }
    else if (info.serializeObject != null)
      { info.serializeObject.get(o); return; }
    else throw fail("unknown special type");
  }
    
  List<Field> lFields = info.fields;
  if (lFields == null) {
    // these are never back-referenced (for readability)
    
    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;
    }
      
    String name = c.getName();
    
    if (!isJavaXName) {
      if (o instanceof Set)
        { d.writeSet((Set) o); return; }
      
      if (o instanceof Collection
        /* && neq(name, "main$Concept$RefL") */) {
        
        { d.writeCollection((Collection) o); return; }
      }
    
      if (o instanceof Map)
        { d.writeMap((Map) o); 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;
      }
      
      if (o instanceof short[]) {
        String hex = shortArrayToHex_bigEndian((short[]) o);
        d.append("shortarray \"").append(hex).app('\"');
        return;
      }
      
      if (o instanceof long[]) {
        String hex = longArrayToHex_bigEndian((long[]) o);
        d.append("longarray \"").append(hex).app('\"');
        return;
      }
      
      String atype = "array"/*, sep = ", "*/; // sep is not used yet
  
      if (o instanceof int[]) {
        //ret "intarray " + quote(intArrayToHex((int[]) o));
        atype = "intarray";
        //sep = " ";
      } else if (o instanceof double[]) {
        atype = "dblarray";
        //sep = " ";
      } else if (o instanceof float[]) {
        atype = "floatarray";
      } else {
        // 2-dimensional and deeper arrays
        Pair<Class, Integer> p = arrayTypeAndDimensions(c);
        if (p.a == int.class) atype = "intarray";
        else if (p.a == byte.class) atype = "bytearray";
        else if (p.a == boolean.class) atype = "boolarray";
        else if (p.a == double.class) atype = "dblarray";
        else if (p.a == float.class) atype = "floatarray";
        else if (p.a == String.class) { atype = "array S"; d.n++; }
        else atype = "array"; // fail("Unsupported array type: " + p.a);
        if (p.b > 1) {
          atype += "/" + p.b; // add number of dimensions
          d.n += 2; // 2 additional tokens will be written
        }
      }
      
      d.append(atype).append("{");
      d.stack.add(new Runnable() {
        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.equals("main$Lisp")) {
      fail("lisp not supported right now");
    }*/
    
    String dynName = shortDynClassNameForStructure(o);
    if (concept && !d.concepts.contains(dynName)) {
      d.concepts.add(dynName);
      d.append("c ");
    }
    
    // serialize an object with fields.
    // first, collect all fields and values in fv.
    
    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)) {
        if (!d.shouldIncludeField(field)) continue;
        
        String fieldName = field.getName();
        if (fieldName.equals("_persistenceInfo"))
          d.persistenceInfo.put(c, obj -> (Map) fieldGet(field, obj));
        if ((field.getModifiers() & (java.lang.reflect.Modifier.STATIC | java.lang.reflect.Modifier.TRANSIENT)) != 0)
          continue;

        fields.add(field);
        
        // put special cases here...?
      }
        
      cc = cc.getSuperclass();
    }
    
    Method persistenceInfoMethod = findInstanceMethod(c, "_persistenceInfo");
    if (persistenceInfoMethod != null)
      d.persistenceInfo.put(c, obj -> (Map) invokeMethod(persistenceInfoMethod, obj));
    
    lFields = asList(d.honorFieldOrder ? fieldObjectsInFieldOrder(c, fields) : fields);

    // Render this$0/this$1 first because unstructure needs it for constructor call.
    
    int n = l(lFields);
    for (int i = 0; i < n; i++) {
      Field f = lFields.get(i);
      if (f.getName().startsWith("this$")) {
        lFields.remove(i);
        lFields.add(0, f);
        break;
      }
    }
  
    
    d.setFields(info, lFields);
  } // << if (lFields == null)

  // get _persistenceInfo from field and/or dynamic field
  IF1<Object, Map> piGetter = d.persistenceInfo.get(c);
  Map persistenceInfo = piGetter == null ? null : piGetter.get(o);
  
  if (piGetter == null && o instanceof DynamicObject)
    persistenceInfo = (Map) getOptDynOnly(((DynamicObject) o), "_persistenceInfo");

  
  LinkedHashMap<String, Object> fv = new LinkedHashMap();
  Object defaultInstance = info.emptyInstance;
  if (!referencable)
    throw fail("Not referencable: " + className(o));
    
  for (Field f : lFields) {
    Object value, defaultValue = null;
    try {
      value = f.get(o);
      defaultValue = defaultInstance == null ? null : f.get(defaultInstance);
    } catch (Exception e) {
      value = "?";
    }
      
    if (!eq(defaultValue, value) && (persistenceInfo == null
      || !Boolean.FALSE.equals(persistenceInfo.get(f.getName()))))
      fv.put(f.getName(), value);
      
    
  }
  
  String shortName = info.shortName;
    
  // Now we have fields & values. Process fieldValues if it's a DynamicObject.
  
  Object classNameFromFV = fv.get("className");
  
  // omit field "className" if equal to class's name
  if (concept && eq(classNameFromFV, shortName))
    fv.remove("className");
          
  if (o instanceof DynamicObject) {
    putAll(fv, (Map) fv.get("fieldValues"));
    fv.remove("fieldValues");
    if (((DynamicObject) o).className != null) {
      // TODO: this probably doesn't work with inner classes
      
      shortName = shortDynClassNameForStructure((DynamicObject) o);
      fv.remove("className");
      
      // special handling for missing Class objects encoded as DynamicObject
      if (eq(shortName, "java.lang.Class")) {
        d.append("class(");
        d.append(quoted(fv.get("name")));
        d.append(")");
        return;
      }
    }
  }
  
  d.writeObject(o, shortName, fv);
} catch (Exception __e) { throw rethrow(__e); } }



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

static 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 <A, B> int lKeys(MultiMap<A, B> mm) {
  return mm == null ? 0 : mm.keysSize();
}


static File loadBinarySnippet(String snippetID) {
  
  IResourceLoader rl = vm_getResourceLoader();
  if (rl != null)
    return rl.loadLibrary(snippetID);
  
  
  return loadBinarySnippet_noResourceLoader(snippetID);
}
  
static File loadBinarySnippet_noResourceLoader(String snippetID) { try {
  long id = parseSnippetID(snippetID);
  if (isImageServerSnippet(id)) return loadImageAsFile(snippetID);
  File f = DiskSnippetCache_getLibrary(id);
  if (fileSize(f) == 0)
    f = loadDataSnippetToFile_noResourceLoader(snippetID);
  return f;
} catch (Exception __e) { throw rethrow(__e); } }


static int latestInstalledJavaX() {
  File[] files = new File(userHome(), ".javax").listFiles();
  int v = 0;
  if (files != null) for (File f : files) {
    Matcher m = regexpMatcher("x(\\d\\d\\d?)\\.jar", f.getName());
    if (m.matches())
      v = Math.max(v, Integer.parseInt(m.group(1)));
  }
  return v;
}


static String x30JarServerURL() {
  return "https://botcompany.de:9898/x30.jar";
}


static ThreadLocal<Map<String, List<String>>> loadBinaryPage_responseHeaders = new ThreadLocal();
static ThreadLocal<Map<String, String>> loadBinaryPage_extraHeaders = new ThreadLocal();

static byte[] loadBinaryPage(String url) { try {
  print("Loading " + url);
  return loadBinaryPage(loadPage_openConnection(new URL(url)));
} catch (Exception __e) { throw rethrow(__e); } }

static 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 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/*Long*/(); } 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); } }



/** writes safely (to temp file, then rename) */
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";
  try (FileOutputStream fileOutputStream = newFileOutputStream(tempFileName)) {
    fileOutputStream.write(contents);
  }
  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 byte[] saveBinaryFile(File fileName, byte[] contents) {
  return saveBinaryFile(fileName.getPath(), contents);
}


static int hashMap_internalHash(Object key) {
  int h;
  return (key == null) ? 0 : (h = key.hashCode()) ^ (h >>> 16);
}


static boolean checkFields(Object x, Object... data) {
  for (int i = 0; i < l(data); i += 2)
    if (neq(getOpt(x, (String) data[i]), data[i+1]))
      return false;
  return true;
}


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


static void cancelTimers(Collection timers) {
  for (Object timer : timers) cancelTimer(timer);
}


static <A> A vmBus_timerStarted(A timer) {
  vmBus_send("timerStarted", timer, costCenter());
  return timer;
}


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

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


static String fulltag(String tag) {
  return hfulltag(tag);
}



static String fulltag(String tag, Object contents, Object... params) {
  return hfulltag(tag, contents, params);
}


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

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


static String joinNemptiesWithComma(Object... strings) {
  return joinNempties(", ", strings);
}

static String joinNemptiesWithComma(Iterable strings) {
  return joinNempties(", ", strings);
}


static List flattenCollectionsAndArrays(Iterable a) {
  List l = new ArrayList();
  for (Object x : a)
    if (x instanceof Collection)
      l.addAll(flattenCollectionsAndArrays((Collection) x));
    else if (x instanceof Object[])
      l.addAll(flattenCollectionsAndArrays(asList((Object[]) x)));
    else
      l.add(x);
  return l;
}

static List flattenCollectionsAndArrays(Object... whatever) {
  return flattenCollectionsAndArrays(ll(whatever));
}


static TimerTask timerTask(final Object r, final java.util.Timer timer) {
  return new TimerTask() {
    public void run() {
      
      if (!licensed())
        timer.cancel();
      else
        pcallF(r);
    }
  };
}


static long clockToSysTimeDiff() {
  return sysNow()-now();
}


static Random getRandomizer(Random r) {
  return r != null ? r : defaultRandomGenerator();
}


static <A> A oneOf(List<A> l) {
  if (empty(l)) return null;
  int n = l.size();
  return n == 1 ? first(l) : l.get(defaultRandomizer().nextInt(n));
}

static char oneOf(String s) {
  return empty(s) ? '?' : s.charAt(random(l(s)));
}

static <A> A oneOf(A... l) {
  return oneOf(asList(l));
}


static <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 <A, B> Pair<A, B> entryToPair(Map.Entry<A, B> e) {
  return mapEntryToPair(e);
}


static <A, B> Set<Map.Entry<A,B>> entries(Map<A, B> map) {
  return _entrySet(map);
}


static String formatWithThousands(long l) {
  return formatWithThousandsSeparator(l);
}


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


static double fraction(double d) {
  return d % 1;
}


static String n_fancy2(long l, String singular, String plural) {
  return formatWithThousandsSeparator(l) + " " + trim(l == 1 ? singular : plural);
}

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

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

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




static Object swingCall(final Object o, final String method, final Object... args) {
  return swing(new F0<Object>() { public Object get() { try {  return call(o, method, args);  } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "return call(o, method, args);"; }});
}


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


static <A, B> List<A> keysList(Map<A, B> map) {
  return cloneListSynchronizingOn(keys(map), map);
}




static <A, B> List<B> valuesList(Map<A, B> map) {
  return cloneListSynchronizingOn(values(map), map);
}


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



static <A> void syncClear(Collection<A> c) {
  if (c != null) synchronized(collectionMutex(c)) { c.clear(); }
}

static void syncClear(Map map) {
  if (map != null) synchronized(collectionMutex(map)) { map.clear(); }
}


static void preCleanUp(Object c) {
  if (c instanceof Collection) { for (Object o : ((Collection) c)) preCleanUp(o); return; }
  callOpt(c, "licensed_off");
  setOpt_raw(c, "ping_anyActions" , true); // so ping notices
  setOpt_raw(c, "cleaningUp_flag" , true);
}


static void innerCleanUp(Object c) {
  // call custom cleanMeUp() and cleanMeUp_*() functions
  
  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 void innerCleanUp() {
  innerCleanUp(mc());
}


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


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

static List<Thread> registeredThreads() {
  _registerThread_threads.size(); // force clean-up
  return asList(keys(_registerThread_threads));
}


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

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


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

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


static void retireClassLoader(ClassLoader cl) {
  try {
    if (isJavaXClassLoader(cl))
      setOptAll(cl, "retired" , true, "retiredMarker" , new DefunctClassLoader());
  } catch (Throwable __e) { pcallFail(__e); }
}





static String localDateWithSeconds(long time) {
  SimpleDateFormat format = simpleDateFormat_local("yyyy/MM/dd HH:mm:ss");
  return format.format(time);
}

static String localDateWithSeconds() {
  return localDateWithSeconds(now());
}


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

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


static Set asSet(Object[] array) {
  HashSet set = new HashSet();
  for (Object o : array)
    if (o != null)
      set.add(o);
  return set;
}

static Set<String> asSet(String[] array) {
  TreeSet<String> set = new TreeSet();
  for (String o : array)
    if (o != null)
      set.add(o);
  return set;
}

static <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 Complex complex(double re, double im) {
  return new Complex(re, im);
}

static Complex complex(double re) {
  return new Complex(re, 0.0);
}

static Complex complex(double[] reIm) {
  if (empty(reIm)) return null;
  if (l(reIm) != 2) throw fail("Need 2 doubles to make complex number");
  return complex(reIm[0], reIm[1]);
}




static boolean isLoopbackIP(String ip) {
  return eq(ip, "127.0.0.1");
}


static String thisVMGreeting() {
  List record_list =  (List) (get(getJavaX(), "record_list"));
  Object android = first(record_list); // Should be of class Android3
  return getString(android, "greeting");
}


static 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 "return callStaticAnswerMethod(getJavaX(), _s);"; }});
  } catch (Throwable e) {
    e = getInnerException(e);
    printStackTrace(e);
    return str(e);
  }
}


static <A> A assertEquals(Object x, A y) {
  return assertEquals("", x, y);
}

static <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 void assertEquals(Scorer scorer, Object x, Object y) {
    assertEquals(scorer, "", x, y);
  }
  
  static void assertEquals(Scorer scorer, String msg, Object x, Object y) {
    if (scorer == null) { assertEquals(msg, x, y); return; }
    scorer.add(eq(x, y), nullIfEmpty(msg));
  }



static 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;
    
    // scan for whitespace
    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);

    // scan for non-whitespace
    if (c == '\'' || c == '"') {
      char opener = c;
      ++j;
      while (j < l) {
        if (s.charAt(j) == opener || s.charAt(j) == '\n') { // end at \n to not propagate unclosed string literal errors
          ++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)); // for stuff like "don't"
    else if (Character.isDigit(c)) {
      do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      if (j < l && s.charAt(j) == 'L') ++j; // Long constants like 1L
    } 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 String stringIf(boolean b, String s) {
  return stringIfTrue(b, s);
}

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


static boolean isJavaXClassName(String s) { return isJavaXClassName(s, "main$"); }
static boolean isJavaXClassName(String s, String mcDollar) {
  return startsWithOneOf(s, mcDollar, "main$", "loadableUtils.", "x30", "userCode.");
}


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


static boolean startsWithDigit(String s) {
  return nempty(s) && isDigit(s.charAt(0));
}


static boolean isSyntheticOrAnonymous(Class c) {
  return c != null && (c.isSynthetic() || isAnonymousClassName(c.getName()));
}


// keeps package names for dynamic code (package dyn.*)
static String shortDynClassNameForStructure(Object o) {
   if (o instanceof DynamicObject && ((DynamicObject) o).className != null)
    return ((DynamicObject) o).className;
  if (o == null) return null;
  Class c = o instanceof Class ? (Class) o : o.getClass();
  String name = c.getName();
  return name.startsWith("dyn.") ? classNameToVM(name) : shortenClassName(name);
}


static boolean isPersistableClass(Class c) {
  String name = c.getName();
  if (isSubtypeOf(c, TransientObject.class)) return false;
  if (isAnonymousClassName(name)) return false;
  if (isBoxedType(c)) return true;
  if (isArrayType(c)) return true;
  if (c == Class.class || c == String.class || c == File.class || c == Color.class) return true;
  if (name.startsWith("java.util.Collections$Synchronized")) return true;
  
  if (hasThisDollarFields(c))
    return hasSingleArgumentConstructor(c);
  else
    return getDefaultConstructor(c) != null;
}


static Constructor getDefaultConstructor(Class c) {
  if (c != null)
    for (Constructor m : getDeclaredConstructors_cached(c))
      if (empty(m.getParameterTypes()))
        return m;
  return null;
}


static Object invokeConstructor(Constructor m, Object... args) { try {
  makeAccessible(m);
  return m.newInstance(args);
} catch (Exception __e) { throw rethrow(__e); } }


static 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 boolean isCIMap_gen(Map map) {
  return map instanceof TreeMap && className(((TreeMap) map).comparator()).contains("CIComp");
}


// works for both java.util-wrapped maps as well as our own
static <A, B> Map<A, B> unwrapSynchronizedMap(Map<A, B> map) {
  if (eqOneOf(shortClassName(map),
    "SynchronizedMap",
    "SynchronizedSortedMap",
    "SynchronizedNavigableMap"))
    return (Map) get_raw(map, "m");
  return map;
}


// Use like this: renderVars(+x, +y)
// Or like this: renderVars SomeID(+x, +y)
static String renderVars(Object... params) {
  return renderVars_str(params);
}


static boolean isCISet_gen(Iterable<String> l) {
  return l instanceof TreeSet && className(((TreeSet) l).comparator()).contains("CIComp");
}


static <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 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 String boolArrayToHex(boolean[] a) {
  return bytesToHex(boolArrayToBytes(a));
}


static String shortArrayToHex_bigEndian(short[] a) {
  return bytesToHex(byteArrayFromShorts_bigEndian(a));
}


static String longArrayToHex_bigEndian(long[] a) {
  return bytesToHex(byteArrayFromLongs_bigEndian(a));
}


static Pair<Class, Integer> arrayTypeAndDimensions(Object o) {
  return arrayTypeAndDimensions(_getClass(o));
}

static Pair<Class, Integer> arrayTypeAndDimensions(Class c) {
  if (c == null || !c.isArray()) return null;
  Class elem = c.getComponentType();
  if (elem.isArray())
    return mapPairB(arrayTypeAndDimensions(elem), dim -> dim+1);
  return pair(elem, 1);
}


static int stdcompare(Number a, Number b) {
  return cmp(a, b);
}

static int stdcompare(String a, String b) {
  return cmp(a, b);
}

static int stdcompare(long a, long b) {
  return a < b ? -1 : a > b ? 1 : 0;
}

static int stdcompare(Object a, Object b) {
  return cmp(a, b);
}



static Map<Class, Field[]> getDeclaredFields_cache = newDangerousWeakHashMap();

static 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 Object fieldGet(Field f, Object o) { try {
  return f == null ? null : f.get(o);
} catch (Exception __e) { throw rethrow(__e); } }


static Method findInstanceMethod(Class c, String method, Object... args) {
  while (c != null) {
    for (Method m : c.getDeclaredMethods())
      if (m.getName().equals(method) && findMethod_checkArgs(m, args, false))
        return m;
    c = c.getSuperclass();
  }
  return null;
}



static Set<Field> fieldObjectsInFieldOrder(Class c, Set<Field> fields) {
  try {
    var byName = mapToKey(f -> f.getName(), fields);
    LinkedHashSet<Field> out = new LinkedHashSet();
    for (String name : unnullForIteration(getFieldOrder(c))) {
      Field f = byName.get(name);
      if (f != null) {
        byName.remove(name);
        out.add(f);
      }
    }
    addAll(out, fields);
    return out;
  } catch (Throwable __0) { printStackTrace(__0);
    return fields;
  }
}


static String quoted(Object o) {
  return quote(o);
}



static String quoted(String s) {
  return quote(s);
}



static 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); } }



// If you change this, also change DiskSnippetCache_fileToLibID
static File DiskSnippetCache_file(long snippetID) {
  return new File(getGlobalCache(), "data_" + snippetID + ".jar");
}
  
// Data files are immutable, use centralized cache
public static File DiskSnippetCache_getLibrary(long snippetID) throws IOException {
  File file = DiskSnippetCache_file(snippetID);
  return file.exists() ? file : null;
}

public static File DiskSnippetCache_getLibrary(String snippetID) { try {
  return DiskSnippetCache_getLibrary(psI(snippetID));
} catch (Exception __e) { throw rethrow(__e); } }

public static void DiskSnippetCache_putLibrary(long snippetID, byte[] data) throws IOException {
  saveBinaryFile(DiskSnippetCache_file(snippetID), data);
}

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



static File loadDataSnippetToFile(String snippetID) { try {
  
  IResourceLoader rl = vm_getResourceLoader();
  if (rl != null)
    return rl.loadLibrary(snippetID);
  
  
  return loadDataSnippetToFile_noResourceLoader(snippetID);
} catch (Exception __e) { throw rethrow(__e); } }
  
static File loadDataSnippetToFile_noResourceLoader(String snippetID) { try {
  snippetID = fsI(snippetID);
  
  File f = DiskSnippetCache_file(parseSnippetID(snippetID));
  List<URL> urlsTried = new ArrayList();
  List<Throwable> errors = new ArrayList();
  try {
    URL url = addAndReturn(urlsTried, new URL(dataSnippetLink(snippetID)));
    print("Loading library: " + hideCredentials(url));
    try {
      loadBinaryPageToFile(openConnection(url), f);
      if (fileSize(f) == 0) throw fail();
    } catch (Throwable e) {
      errors.add(e);
      url = addAndReturn(urlsTried, new URL(tb_mainServer() + "/blobs/" + psI(snippetID)));
      print(e);
      print("Trying other server: " + hideCredentials(url));
      loadBinaryPageToFile(openConnection(url), f);
      print("Got bytes: " + fileSize(f));
    }
    // TODO: check if we hit the "LOADING" message
    if (fileSize(f) == 0) throw fail();
    System.err.println("Bytes loaded: " + fileSize(f));
  } catch (Throwable e) {
    //printStackTrace(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 <A> A println(A a) {
  return print(a);
}


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


static Object costCenter() { return mc(); }


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

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


static String joinStrings(String sep, Object... strings) {
  return joinStrings(sep, Arrays.asList(strings));
}

static String joinStrings(String sep, Iterable strings) {
  StringBuilder buf = new StringBuilder();
  for (Object o : unnull(strings)) { 
    String s = strOrNull(o);
    if (nempty(s)) {
      if (nempty(buf)) buf.append(sep);
      buf.append(s);
    }
  }
  return str(buf);
}


static Random defaultRandomizer() {
  return defaultRandomGenerator();
}


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




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


static Set<String> getPlural_specials = litciset("sheep", "fish");

static String getPlural(String s) {
  if (contains(getPlural_specials, s)) return s;
  if (ewic(s, "y")) return dropSuffixIgnoreCase("y", s) + "ies";
  if (ewicOneOf(s, "ss", "ch")) return s + "es";
  if (ewic(s, "s")) return s;
  return s + "s";
}


static <A> ArrayList<A> cloneListSynchronizingOn(Collection<A> l, Object mutex) {
  if (l == null) return new ArrayList();
  synchronized(mutex) {
    return new ArrayList<A>(l);
  }
}


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

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

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


static 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 volatile PersistableThrowable _handleException_lastException;
static List _handleException_onException = synchroList(ll((IVF1<Throwable>) (__1 -> printStackTrace2(__1))));
static boolean _handleException_showThreadCancellations = false;

static void _handleException(Throwable e) {
  _handleException_lastException = persistableThrowable(e);
  
  Throwable e2 = innerException(e);
  if (e2.getClass() == RuntimeException.class && eq(e2.getMessage(), "Thread cancelled.") || e2 instanceof InterruptedException) {
    if (_handleException_showThreadCancellations)
      System.out.println(getStackTrace_noRecord(e2));
    return;
  }

  for (Object f : cloneList(_handleException_onException)) try {
    callF(f, e);
  } catch (Throwable e3) {
    try {
      printStackTrace2(e3); // not using pcall here - it could lead to endless loops
    } catch (Throwable e4) {
      System.out.println(getStackTrace(e3));
      System.out.println(getStackTrace(e4));
    }
  }
}


static boolean interruptThread_verbose = false;

static void interruptThread(Thread t) {
  if (t == null) return;
  if (interruptThread_verbose) print("Interrupting thread " + t);
  
  // note reason in global map
  
  vm_threadInterruptionReasonsMap().put(t, getStackTrace());
  
  t.interrupt();
  URLConnection c =  (URLConnection) (vm_generalSubMap("URLConnection per thread").get(t));
  if (c != null) { try {
    print("Closing URLConnection of interrupted thread.");
    call(c, "disconnect");
  } catch (Throwable __e) { pcallFail(__e); }}
}


static boolean isJavaXClassLoader(ClassLoader cl) {
  return startsWithOneOf(className(cl), "main$JavaXClassLoader", "x30$JavaXClassLoader");
}


static void setOptAll(Object o, Map<String, Object> fields) {
  if (fields == null) return;
  for (String field : keys(fields))
    setOpt/*_flex*/(o, field, fields.get(field));
}

static void setOptAll(Object o, Object... values) {
  //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];
    setOpt(o, field, value);
  }
}




static boolean loadBufferedImage_useImageCache = true;

static BufferedImage loadBufferedImage(String snippetIDOrURLOrFile) { try {
  ping();
  if (snippetIDOrURLOrFile == null) return null;
  if (isURL(snippetIDOrURLOrFile))
    return imageIO_readURL(snippetIDOrURLOrFile);

  if (isSnippetID(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();
          // fall back to loading from sourceforge
        }
    }
  
    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"));
      //Log.info("Cached image.");
    }
  
    //Log.info("Loaded image.");
    return image;
  } else
    return loadBufferedImage(new File(snippetIDOrURLOrFile));
} catch (Exception __e) { throw rethrow(__e); } }

static BufferedImage loadBufferedImage(File file) {
  return loadBufferedImageFile(file);
}


static 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 ThreadLocal<Boolean> assertVerbose_value = new ThreadLocal();

static void assertVerbose(boolean b) {
  assertVerbose_value.set(b);
}

static boolean assertVerbose() { return isTrue(assertVerbose_value.get()); }


static <A> A assertEqualsVerbose(Object x, A y) {
  assertEqualsVerbose((String) null, x, y);
  return y;
}

// x = expected, y = actual
static <A> A assertEqualsVerbose(String msg, Object x, A y) {
  if (!eq(x, y)) {
    

    throw fail((nempty(msg) ? msg + ": " : "") + "expected: "+ x + ", got: " + y);
  } else
    print("OK" + (empty(msg) ? "" : " " + msg) + ": " + /*sfu*/(x));
  return y;
}


static void assertEqualsVerbose(Scorer scorer, Object x, Object y) { assertEqualsVerbose(scorer, "", x, y); }
static void assertEqualsVerbose(Scorer scorer, String msg, Object x, Object y) {
  if (scorer == null) { assertEqualsVerbose(x, y); return; }
  if (!eq(x, y)) {
    print(appendColonIfNempty(msg) + y + " != " + x);
    scorer.add(false);
  } else {
    print("OK: " + appendColonIfNempty(msg) + x);
    scorer.add(true);
  }
}



static String nullIfEmpty(String s) {
  return isEmpty(s) ? null : s;
}

static <A, B> Map<A, B> nullIfEmpty(Map<A, B> map) {
  return isEmpty(map) ? null : map;
}

static <A> List<A> nullIfEmpty(List<A> l) {
  return isEmpty(l) ? null : l;
}


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


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


static boolean isAnonymousClassName(String s) {
  for (int i = 0; i < l(s); i++)
    if (s.charAt(i) == '$' && Character.isDigit(s.charAt(i+1)))
      return true;
  return false;
}


static boolean isBoxedType(Class type) {
  return type == Boolean.class
    || type == Integer.class
    || type == Long.class
    || type == Float.class
    || type == Short.class
    || type == Character.class
    || type == Byte.class
    || type == Double.class;
}


static boolean isArrayType(Class type) {
  return type != null && type.isArray();
}


static boolean hasThisDollarFields(Object o) {
  Matches m = new Matches();
  for (var f : allFieldObjects_dontMakeAccessible(o))
    if (startsWith(f.getName(), "this$", m) && isInteger(m.rest()))
      return true;
  return false;
}


static boolean hasSingleArgumentConstructor(Class c) {
  if (c != null)
    for (Constructor m : getDeclaredConstructors_cached(c))
      if (l(m.getParameterTypes()) == 1)
        return true;
  return false;
}


static 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 byte[] byteArrayFromShorts_bigEndian(short[] a) {
  return byteArrayFromShorts_bigEndian(a, 0, l(a));
}

static byte[] byteArrayFromShorts_bigEndian(short[] a, int from, int to) {
  byte[] b = new byte[(to-from)*2];
  for (int i = 0; i < a.length; i++) {
    short s = a[from+i];
    b[i*2] = (byte) (s >> 8);
    b[i*2+1] = (byte) s;
  }
  return b;
}


static byte[] byteArrayFromLongs_bigEndian(long[] a) {
  return byteArrayFromLongs_bigEndian(a, 0, l(a));
}

static byte[] byteArrayFromLongs_bigEndian(long[] a, int from, int to) {
  byte[] b = new byte[(to-from)*8];
  for (int i = 0; i < a.length; i++) {
    long s = a[from+i];
    b[i*8] = (byte) (s >> 56);
    b[i*8+1] = (byte) (s >> 48);
    b[i*8+2] = (byte) (s >> 40);
    b[i*8+3] = (byte) (s >> 32);
    b[i*8+4] = (byte) (s >> 24);
    b[i*8+5] = (byte) (s >> 16);
    b[i*8+6] = (byte) (s >> 8);
    b[i*8+7] = (byte) s;
  }
  return b;
}


static <A, B, C> List<Pair<A, C>> mapPairB(final Object f, Iterable<Pair<A, B>> l) {
  return map(l, new F1<Pair<A, B>, Pair<A, C>>() { public Pair<A, C> get(Pair<A, B> p) { try { 
    return p == null ? null : pair(p.a, (C) callF(f, p.b));
   } catch (Exception __e) { throw rethrow(__e); } }
  public String toString() { return "p == null ? null : pair(p.a, (C) callF(f, p.b))"; }});
}

static <A, B, C> List<Pair<A, C>> mapPairB(final F1<B, C> f, Iterable<Pair<A, B>> l) {
  return mapPairB((Object) f, l);
}

static <A, B, C> List<Pair<A, C>> mapPairB(final IF1<B, C> f, Iterable<Pair<A, B>> l) {
  return mapPairB((Object) f, l);
}

static <A, B, C> List<Pair<A, C>> mapPairB(Iterable<Pair<A, B>> l, IF1<B, C> f) {
  return mapPairB((Object) f, l);
}

static <A, B, C> Pair<A, C> mapPairB(IF1<B, C> f, Pair<A, B> p) {
  return pairMapB(f, p);
}

static <A, B, C> Pair<A, C> mapPairB(Pair<A, B> p, IF1<B, C> f) {
  return pairMapB(f, p);
}


static <A, B> Map<B, A> mapToKey(Iterable<A> l, IF1<A, B> f) {
  return mapToKeys(l, f);
}



static <A, B> Map<B, A> mapToKey(IF1<A, B> f, Iterable<A> l) {
  return mapToKeys(f, l);
}


static Map<Class, List<String>> getFieldOrder_cache = weakMap();

static List<String> getFieldOrder(Object o) {
  return getFieldOrder(_getClass(o));
}

static List<String> getFieldOrder(Class c) {
  if (c == null) return null;
  return getOrCreate(getFieldOrder_cache, c,
    () -> splitAtSpace(toStringOpt(getOpt(c, "_fieldOrder"))));
}


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


static File imageSnippetCacheFile(String snippetID) {
  File dir = imageSnippetsCacheDir();
  
  if (!loadBufferedImage_useImageCache) return null;
  
  return new File(dir, parseSnippetID(snippetID) + ".png");
}


static String snippetImageURL_noHttps(String snippetID) {
  return snippetImageURL_noHttps(snippetID, "png");
}

static 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 String dataSnippetLink(String snippetID) {
  long id = parseSnippetID(snippetID);
  if (id >= 1100000 && id < 1200000)
    return imageServerURL() + id;
  if (id >= 1200000 && id < 1300000) { // Woody files, actually
    String pw = muricaPassword();
    if (empty(pw)) throw fail("Please set 'murica password by running #1008829");
    return "https://botcompany.de/files/" + id + "?_pass=" + pw; // XXX, although it typically gets hidden when printing
  }
  return fileServerURL() + "/" + id /*+ "?_pass=" + muricaPassword()*/;
}


static <B, A extends B> A addAndReturn(Collection<B> c, A a) {
  if (c != null) c.add(a);
  return a;
}

static <B, A extends B> A addAndReturn(List<B> c, int idx, A a) {
  if (c != null) c.add(idx, a);
  return a;
}


static void loadBinaryPageToFile(String url, File file) { try {
  print("Loading " + url);
  loadBinaryPageToFile(openConnection(new URL(url)), file);
} catch (Exception __e) { throw rethrow(__e); } }

static void loadBinaryPageToFile(URLConnection con, File file) { try {
  setHeaders(con);
  loadBinaryPageToFile_noHeaders(con, file);
} catch (Exception __e) { throw rethrow(__e); } }

static void loadBinaryPageToFile_noHeaders(URLConnection con, File file) { try {
  assertNotNull(file);
  File ftemp = new File(f2s(file) + "_temp");
  FileOutputStream buf = newFileOutputStream(mkdirsFor(ftemp));
  try {
    InputStream inputStream = con.getInputStream();
    long len = 0;
    try { len = con.getContentLength/*Long*/(); } 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 Object[] mapToParams(Map map) {
  return mapToObjectArray(map);
}


static Object[] unrollParams(Object[] params) {
  if (l(params) == 1 && params[0] instanceof Map)
    return mapToParams((Map) params[0]);
  return params;
}


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

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


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


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


static TreeSet<Symbol> litciset(Symbol... items) {
  TreeSet<Symbol> set = treeSet(); // HashSet would also do, but we might have the return type fixed somewhere, and they might want a NavigableMap.
  for (Symbol a : items) set.add(a);
  return set;
}



static String dropSuffixIgnoreCase(String suffix, String s) {
  return ewic(s, suffix) ? s.substring(0, l(s)-l(suffix)) : s;
}


static boolean ewicOneOf(String s, String... l) {
  if (s != null) for (String x : l) if (ewic(s, x)) return true; return false;
}


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

static <T> void sort(T[] a) {
  if (a != null) Arrays.sort(a);
}

static void sort(int[] a) { if (a != null) Arrays.sort(a); }

static <T> void sort(List<T> a, Comparator<? super T> c) {
  if (a != null) Collections.sort(a, c);
}

static void sort(List a) {
  if (a != null) Collections.sort(a);
}


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

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

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

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


static 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 Throwable printStackTrace2(Throwable e) {
  // we go to system.out now - system.err is nonsense
  print(getStackTrace2(e));
  return e;
}

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

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



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




static BufferedImage imageIO_readURL(String url) { try {
  return ImageIO.read(new URL(url));
} catch (Exception __e) { throw rethrow(__e); } }



static File imageSnippetsCacheDir() {
  return javaxCachesDir("Image-Snippets");
}


static String snippetImageURL_http(String snippetID) {
  return snippetImageURL_http(snippetID, "png");
}

static String snippetImageURL_http(String snippetID, String contentType) {
  return replacePrefix("https://", "http://", snippetImageURL(snippetID, contentType)).replace(":8443", ":8080");
}


static BufferedImage loadBufferedImageFile(File file) { try {
  if (!isFile(file)) return null;
  
  return ImageIO.read(file);
} catch (Exception __e) { throw rethrow(__e); } }


static String appendColonIfNempty(String s) {
  return empty(s) ? "" : s + ": ";
}


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

static boolean isEmpty(File f) {
  return f == null || f.length() == 0;
}

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

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

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




static boolean isEmpty(AppendableChain c) { return c == null; }


static boolean isEmpty(IntSize l) { return l == null || l.size() == 0; }


static List<Field> allFieldObjects_dontMakeAccessible(Object o) {
  List<Field> fields = new ArrayList();
  Class _c = _getClass(o);
  do {
    addAll(fields, _c.getDeclaredFields());
    _c = _c.getSuperclass();
  } while (_c != null);
  return fields;
}


static Pair pairMapB(Object f, Pair p) {
  return p == null ? null : pair(p.a, callF(f, p.b));
}

static <A, B, C> Pair<A, C> pairMapB(IF1<B, C> f, Pair<A, B> p) {
  return p == null ? null : pair(p.a, f.get(p.b));
}

static Pair pairMapB(Pair p, Object f) {
  return pairMap(f, p);
}



static <A, B> Map<B, A> mapToKeys(Iterable<A> l, IF1<A, B> f) {
  if (l == null) return null;
  HashMap<B, A> map = new HashMap();
  for (A a : l)
    map.put(f.get(a), a);
  return map;
}

static <A, B> Map<B, A> mapToKeys(IF1<A, B> f, A[] l) { return mapToKeys(f, asList(l)); }
static <A, B> Map<B, A> mapToKeys(IF1<A, B> f, Iterable<A> l) {
  return mapToKeys(l, f);
}


static <A, B> Map<A, B> weakMap() {
  return newWeakHashMap();
}


// allows null keys but not null values

static <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); } }

// f : func -> B
static <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 <A, B> B getOrCreate(IF0<B> f, Map<A, B> map, A key) {
  return getOrCreate(map, key, f);
}

static <A, B> B getOrCreate(Map<A, B> map, A key, IF0<B> f) {
  B b = map.get(key);
  if (b == null)
    map.put(key, b = f.get());
  return b;
}

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


static List<String> splitAtSpace(String s) {
  return empty(s) ? emptyList() : asList(s.split("\\s+"));
}


static String toStringOpt(Object o) {
  return o instanceof String ? ((String) o) : null;
}


static String snippetImageURL(long snippetID) {
  return snippetImageURL(fsI(snippetID));
}

static String snippetImageURL(String snippetID) {
  return snippetImageURL(snippetID, "png");
}

static String snippetImageURL(String snippetID, String contentType) {
  if (snippetID == null || isURL(snippetID)) return snippetID;
  long id = parseSnippetID(snippetID);
  String url;
  if (isImageServerSnippet(id))
    url = imageServerLink(id);
  else
    //url = "http://eyeocr.sourceforge.net/filestore/filestore.php?cmd=serve&file=blob_" + id + "&contentType=image/" + contentType;
    url = "https://botcompany.de/img/" + id;
  return url;
}


static String fileServerURL() {
  return "https://botcompany.de/files";
}


public static File mkdirsFor(File file) {
  return mkdirsForFile(file);
}



static void copyStreamWithPrints(InputStream in, OutputStream out, String pat) { try {
  byte[] buf = new byte[65536];
  int total = 0;
  while (true) {
    int n = in.read(buf);
    if (n <= 0) return;
    out.write(buf, 0, n);
    if ((total+n)/100000 > total/100000)
      print(pat.replace("{*}", str(roundDownTo(100000, total))));
    total += n;
  }
} catch (Exception __e) { throw rethrow(__e); } }


static File renameFile_assertTrue(File a, File b) { try {
  if (a.equals(b)) return b; // no rename necessary
  if (!a.exists()) throw fail("Source file not found: " + f2s(a));
  if (b.exists()) throw fail("Target file exists: " + f2s(b));
  mkdirsForFile(b);
  
  
  if (!a.renameTo(b))
    throw fail("Can't rename " + f2s(a) + " to " + f2s(b));
  
  return b;
} catch (Exception __e) { throw rethrow(__e); } }


static 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 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 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 <A> Object[] mapToObjectArray(Collection<A> l, IF1<A, Object> f) {
  return mapToObjectArray(f, l);
}

static <A> Object[] mapToObjectArray(A[] l, IF1<A, Object> f) {
  return mapToObjectArray(f, l);
}

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

static <A> Object[] mapToObjectArray(IF1<A, Object> f, Collection<A> 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;
}


// this should be on by default now I think, but it may break
// legacy code...
static ThreadLocal<Boolean> htmlencode_forParams_useV2 = new ThreadLocal();

static String htmlencode_forParams(String s) {
  if (s == null) return "";
  if (isTrue(htmlencode_forParams_useV2.get()))
    return htmlencode_forParams_v2(s);
    
  StringBuilder out = new StringBuilder(Math.max(16, s.length()));
  for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c > 127 || c == '"' || c == '<' || c == '>') {
          out.append("&#");
          out.append((int) c);
          out.append(';');
      } else
          out.append(c);
  }
  return out.toString();
}


static <A> TreeSet<A> treeSet() {
  return new TreeSet();
}


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




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

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


static Pair pairMap(Object f, Pair p) {
  return p == null ? null : pair(callF(f, p.a), callF(f, p.b));
}

static <A> Pair<A, A> pairMap(IF1<A, A> f, Pair<A, A> p) {
  return p == null ? null : pair(callF(f, p.a), callF(f, p.b));
}

static Pair pairMap(Pair p, Object f) {
  return pairMap(f, p);
}



static String imageServerLink(String md5OrID) {
  if (possibleMD5(md5OrID))
    return "https://botcompany.de/images/md5/" + md5OrID;
  return imageServerLink(parseSnippetID(md5OrID));
}

static String imageServerLink(long id) {
  return "https://botcompany.de/images/" + id;
}


// TODO: optimize to x-(x%n) in case that's the same thing
// (or x-mod(x,n)?)
static int roundDownTo(int n, int x) {
  return x/n*n;
}

static long roundDownTo(long n, long x) {
  return x/n*n;
}

static double roundDownTo(double n, double x) {
  return floor(x/n)*n;
}


static String htmlencode_forParams_v2(String s) {
  if (s == null) return "";
  StringBuilder out = new StringBuilder(Math.max(16, s.length()));
  for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c > 127 || c == '"' || c == '<' || c == '>' || c == '&') {
          out.append("&#");
          out.append((int) c);
          out.append(';');
      } else
          out.append(c);
  }
  return out.toString();
}


static 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 Throwable innerException2(Throwable e) {
  if (e == null) return null;
  while (empty(e.getMessage()) && e.getCause() != null)
    e = e.getCause();
  return e;
}




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


static double floor(double d) {
  return Math.floor(d);
}




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




static 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') {
      // ok
    } else
      return false;
  }
  return true;
}




static class Chain<A> implements Iterable<A> {
  A element;
  Chain<A> next;
  int size;
  
  Chain() {}
  Chain(A element) {
  this.element = element; size = 1; }
  Chain(A element, Chain<A> next) {
  this.next = next;
  this.element = element;
    size = next != null ? next.size+1 : 1;
  }
  
  public String toString() { return str(toList()); }
  
  ArrayList<A> toList() {
    ArrayList<A> l = emptyList(size);
    Chain<A> c = this;
    while (c != null) {
      l.add(c.element);
      c = c.next;
    }
    return l;
  }
  
  // TODO: optimize
  public Iterator<A> iterator() { return toList().iterator(); }
}
// size:
// 64 bytes for 0 to 1 elements
// 96 bytes for 2 to 4 elements

/*
 * #!
 * Ontopia Engine
 * #-
 * Copyright (C) 2001 - 2013 The Ontopia Project
 * #-
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * !#
 */

static class CompactHashMap<K, V> extends CompactAbstractMap<K, V> {
  final static int INITIAL_SIZE = 3;
  final static double LOAD_FACTOR = 0.6;

  // This object is used to represent a null KEY (null value are kept as is)
  final static Object nullObject = new Object();
  
  /**
   * When a key is deleted this object is put into the hashtable in
   * its place, so that other entries with the same key (collisions)
   * further down the hashtable are not lost after we delete an object
   * in the collision chain.
   */
  final static Object deletedObject = new Object();
  int elements;
  int freecells;
  Object[] table; // key, value, key, value, ...
  //int modCount;

  CompactHashMap() {
    this(INITIAL_SIZE);
  }

  CompactHashMap(int size) {
    table = new Object[(size==0 ? 1 : size)*2];
    elements = 0;
    freecells = tableSize();
    //modCount = 0;
  }
  
  // TODO: allocate smarter
  CompactHashMap(Map<K, V> map) {
    this(0);
    if (map != null) putAll(map);
  }

  // ===== MAP IMPLEMENTATION =============================================

  /**
   * Returns the number of key/value mappings in this map.
   */
  public synchronized int size() {
    return elements;
  }
  
  /**
   * Returns <tt>true</tt> if this map contains no mappings.
   */
  public synchronized boolean isEmpty() {
    return elements == 0;
  }

  /**
   * Removes all key/value mappings in the map.
   */
  public synchronized void clear() {
    elements = 0;
    for (int ix = 0; ix < tableSize(); ix++) {
      key(ix, null);
      value(ix, null);
    }
    freecells = tableSize();
    //modCount++;
  }
  
  /**
   * Returns <tt>true</tt> if this map contains the specified key.
   */
  public synchronized boolean containsKey(Object k) {
    return key(findKeyIndex(k)) != null;
  }
  
  /**
   * Returns <tt>true</tt> if this map contains the specified value.
   */
  public synchronized boolean containsValue(Object v) {
    if (v == null)
      v = (V)nullObject;

    for (int ix = 0; ix < tableSize(); ix++)
      if (value(ix) != null && value(ix).equals(v))
        return true;

    return false;
  }

  /**
   * Returns a read-only set view of the map's keys.
   */
  public synchronized Set<Entry<K, V>> entrySet() {
    return new EntrySet();
  }

  /**
   * Removes the mapping with key k, if there is one, and returns its
   * value, if there is one, and null if there is none.
   */
  public synchronized V remove(Object k) {
    int index = findKeyIndex(k);

    // we found the right position, now do the removal
    if (key(index) != null) {
      // we found the object

      // same problem here as with put
      V v = value(index);
      key(index, deletedObject);
      value(index, deletedObject);
      //modCount++;
      elements--;
      return v;
    } else
      // we did not find the key
      return null;
  }

  /**
   * Adds the specified mapping to this map, returning the old value for
   * the mapping, if there was one.
   */
  public synchronized V put(K k, V v) {
    if (k == null)
      k = (K)nullObject;

    int hash = k.hashCode();
    int index = (hash & 0x7FFFFFFF) % tableSize();
    int offset = 1;
    int deletedix = -1;
    
    // search for the key (continue while !null and !this key)
    while(key(index) != null &&
          !(key(index).hashCode() == hash &&
            key(index).equals(k))) {

      // if there's a deleted mapping here we can put this mapping here,
      // provided it's not in here somewhere else already
      if (key(index) == deletedObject)
        deletedix = index;
      
      index = ((index + offset) & 0x7FFFFFFF) % tableSize();
      offset = offset*2 + 1;

      if (offset == -1)
        offset = 2;
    }
    
    if (key(index) == null) { // wasn't present already
      if (deletedix != -1) // reusing a deleted cell
        index = deletedix;
      else
        freecells--;

      //modCount++;
      elements++;

      key(index, k);
      value(index, v);
      
      // rehash with increased capacity
      if (1 - (freecells / (double) tableSize()) > LOAD_FACTOR)
        rehash(tableSize()*2 + 1);
      return null;
    } else { // was there already
      //modCount++;
      V oldv = value(index);
      value(index, v);
      return oldv;
    }
  }

  /**
   * INTERNAL: Rehashes the hashmap to a bigger size.
   */
  void rehash(int newCapacity) {
    int oldCapacity = tableSize();
    Object[] newTable = new Object[newCapacity*2];

    for (int ix = 0; ix < oldCapacity; ix++) {
      Object k = key(ix);
      if (k == null || k == deletedObject)
        continue;
      
      int hash = k.hashCode();
      int index = (hash & 0x7FFFFFFF) % newCapacity;
      int offset = 1;

      // search for the key
      while(newTable[index*2] != null) { // no need to test for duplicates
        index = ((index + offset) & 0x7FFFFFFF) % newCapacity;
        offset = offset*2 + 1;

        if (offset == -1)
          offset = 2;
      }

      newTable[index*2] = k;
      newTable[index*2+1] = value(ix);
    }

    table = newTable;
    freecells = tableSize() - elements;
  }

  /**
   * Returns the value for the key k, if there is one, and null if
   * there is none.
   */
  public synchronized V get(Object k) {
    return value(findKeyIndex(k));
  }

  /**
   * Returns a virtual read-only collection containing all the values
   * in the map.
   */
  public synchronized Collection<V> values() {
    return new ValueCollection();
  }

  /**
   * Returns a virtual read-only set of all the keys in the map.
   */
  public synchronized Set<K> keySet() {
    return new KeySet();
  }

  // --- Internal utilities

  final int findKeyIndex(Object k) {
    if (k == null)
      k = nullObject;

    int hash = k.hashCode();
    int index = (hash & 0x7FFFFFFF) % tableSize();
    int offset = 1;

    // search for the key (continue while !null and !this key)
    while(key(index) != null &&
          !(key(index).hashCode() == hash &&
            key(index).equals(k))) {
      index = ((index + offset) & 0x7FFFFFFF) % tableSize();
      offset = offset*2 + 1;

      if (offset == -1)
        offset = 2;
    }
    return index;
  }
  
  // --- Key set

  class KeySet extends AbstractSet<K> {
    public int size() { synchronized(CompactHashMap.this) {
      return elements;
    }}

    public boolean contains(Object k) { synchronized(CompactHashMap.this) {
      return containsKey(k);
    }}

    public Iterator<K> iterator() { synchronized(CompactHashMap.this) {
      return new KeyIterator();
    }}
  }

  class KeyIterator<K> implements Iterator<K> {
    private int ix;
    
    private KeyIterator() {
      synchronized(CompactHashMap.this) {
        // walk up to first value, so that hasNext() and next() return
        // correct results
        for (; ix < tableSize(); ix++)
          if (value(ix) != null && key(ix) != deletedObject)
            break;
      }
    }

    public boolean hasNext() { synchronized(CompactHashMap.this) {
      return ix < tableSize();
    }}

    public void remove() {
      throw new UnsupportedOperationException("Collection is read-only");
    }

    public K next() { synchronized(CompactHashMap.this) {
      if (ix >= tableSize())
        throw new NoSuchElementException();
      K key = (K) key(ix++);
      
      // walk up to next value
      for (; ix < tableSize(); ix++)
        if (key(ix) != null && key(ix) != deletedObject)
          break;
      
      // ix now either points to next key, or outside array (if no next)
      return key;
    }}
  }
  
  // --- Entry set
  
  class EntrySet extends AbstractSet<Map.Entry<K, V>> {
    public int size() { synchronized(CompactHashMap.this) {
      return elements;
    }}

    public boolean contains(Object o) { synchronized(CompactHashMap.this) {
      if (o instanceof Map.Entry) {
        Object key = ((Map.Entry) o).getKey();
        if (!containsKey((Map.Entry) o)) return false;
        return eq(((Map.Entry) o).getValue(), get(key));
      }
      return false;
    }}

    public Iterator<Map.Entry<K, V>> iterator() {
      return new EntryIterator();
    }
  }

  class EntryIterator implements Iterator<Map.Entry<K, V>> {
    private int ix;
    
    private EntryIterator() {
      synchronized(CompactHashMap.this) {
        // walk up to first value, so that hasNext() and next() return
        // correct results
        for (; ix < tableSize(); ix++)
          if (value(ix) != null && key(ix) != deletedObject)
            break;
      }
    }

    public boolean hasNext() { synchronized(CompactHashMap.this) {
      return ix < tableSize();
    }}

    public void remove() {
      throw new UnsupportedOperationException("Collection is read-only");
    }

    public Map.Entry<K, V> next() { synchronized(CompactHashMap.this) {
      if (ix >= tableSize())
        throw new NoSuchElementException();
      K key = key(ix);
      V val = value(ix);
      ++ix;
      
      // walk up to next value
      for (; ix < tableSize(); ix++)
        if (key(ix) != null && key(ix) != deletedObject)
          break;
      
      // ix now either points to next key, or outside array (if no next)
      return simpleMapEntry(key, val);
    }}
  }
  
  // --- Value collection

  class ValueCollection<V> extends AbstractCollection<V> {
    public int size() { synchronized(CompactHashMap.this) {
      return elements;
    }}

    public Iterator<V> iterator() {
      return new ValueIterator();
    }

    public boolean contains(Object v) {
      return containsValue(v);
    }
  }

  class ValueIterator<V> implements Iterator<V> {
    private int ix;
    
    private ValueIterator() {
      synchronized(CompactHashMap.this) {
        // walk up to first value, so that hasNext() and next() return
        // correct results
        for (; ix < table.length/2; ix++)
          if (value(ix) != null && value(ix) != deletedObject)
            break;
      }
    }

    public boolean hasNext() { synchronized(CompactHashMap.this) {
      return ix < tableSize();
    }}

    public void remove() {
      throw new UnsupportedOperationException("Collection is read-only");
    }

    public V next() { synchronized(CompactHashMap.this) {
      if (ix >= tableSize())
        throw new NoSuchElementException();
      V value = (V) value(ix++);
      
      // walk up to next value
      for (; ix < tableSize(); ix++)
        if (value(ix) != null && value(ix) != deletedObject)
          break;
      
      // ix now either points to next value, or outside array (if no next)
      return value;
    }}
  }
  
  K key(int i) { return (K) table[i*2]; }
  void key(int i, Object key) { table[i*2] = key; }
  V value(int i) { return (V) table[i*2+1]; }
  void value(int i, Object value) { table[i*2+1] = value; }
  
  int tableSize() { return table.length/2; }
}
static class ReverseChain<A> implements Iterable<A> {
  A element;
  ReverseChain<A> prev;
  int size;
  
  ReverseChain() {}
  ReverseChain(ReverseChain<A> prev, A element) {
  this.element = element;
  this.prev = prev;
    if (prev == null) size = 1;
    else {
      prev.check();
      size = prev.size+1;
    }
  }
  
  void check() {
    if (size < 1) throw fail("You called the ReverseChain default constructor. Don't do that");
  }
  
  public String toString() {
    return str(toList());
  }
  
  ArrayList<A> toList() {
    check();
    ArrayList<A> l = emptyList(size);
    for (int i = 0; i < size; i++) l.add(null);
    int i = size;
    ReverseChain<A> c = this;
    while (c != null) {
      l.set(--i, c.element);
      c = c.prev;
    }
    return l;
  }
  
  public Iterator<A> iterator() { return toList().iterator(); }
}
static class DefunctClassLoader {}
// just a marker interface for non-persistable classes
interface TransientObject {}
static class Flag implements Runnable {
  private volatile boolean up = false;

  /** returns true if flag was down before (i.e. flag was actually raised right now) */
  public boolean raise() {
    if (up) return false;
    synchronized(this) {
      if (up) return false;
      up = true;
      notifyAll();
      return true;
    }
  }

  public void run() { try { raise(); } catch (Exception __e) { throw rethrow(__e); } }
  
  public void waitUntilUp() { try {
    if (up) return;
    synchronized(this) {
      while (!up) wait();
    }
  } catch (Exception __e) { throw rethrow(__e); } }

  public boolean waitUntilUp(double timeout) {
    if (timeout == infinity()) {
      waitUntilUp();
      return isUp();
    } else
      return waitUntilUp(toMS(timeout));
  }
  
  public boolean waitUntilUp(long timeout) { try {
    if (up) return true;
    synchronized(this) {
      if (!up)
        wait(timeout);
    }
    return isUp();
  } catch (Exception __e) { throw rethrow(__e); } }

  final public boolean get(){ return isUp(); }
public boolean isUp() { return up; }

  public String toString() { return isUp() ? "up" : "down"; }
}
static class Complex implements IFieldsToList{
  static final String _fieldOrder = "re im";
  double re;
  double im;
  Complex() {}
  Complex(double re, double im) {
  this.im = im;
  this.re = re;}

public boolean equals(Object o) {
if (!(o instanceof Complex)) return false;
    Complex __1 =  (Complex) o;
    return re == __1.re && im == __1.im;
}

  public int hashCode() {
    int h = -1679819632;
    h = boostHashCombine(h, _hashCode(re));
    h = boostHashCombine(h, _hashCode(im));
    return h;
  }
  public Object[] _fieldsToList() { return new Object[] {re, im}; }

  double abs() { return sqrt(re*re+im*im); }
  
  double re() { return re; }
  double im() { return im; }
  
  final double angle(){ return phase(); }
double phase() { return Math.atan2(im, re); }
  double fracAngle() { return fracNonNeg(angle()/twoPi()); } // angle as 0 to 1
  
  public String toString() {
    if (im != 0)
      return re == 0 ? im + "i" : re + plusPrefixUnlessMinus(str(im)) + "i";
    else
      return str(re);
  }
}
static final class WidthAndHeightFinal extends Meta implements WidthAndHeight
   , IFieldsToList{
  static final String _fieldOrder = "width height";
  int width;
  int height;
  WidthAndHeightFinal() {}
  WidthAndHeightFinal(int width, int height) {
  this.height = height;
  this.width = width;}

public boolean equals(Object o) {
if (!(o instanceof WidthAndHeightFinal)) return false;
    WidthAndHeightFinal __0 =  (WidthAndHeightFinal) o;
    return width == __0.width && height == __0.height;
}

  public int hashCode() {
    int h = -1177452162;
    h = boostHashCombine(h, _hashCode(width));
    h = boostHashCombine(h, _hashCode(height));
    return h;
  }
  public Object[] _fieldsToList() { return new Object[] {width, height}; }

  public int getWidth() { return width; }
  public int getHeight() { return height; }
  
  WidthAndHeightFinal(int wAndH) { this(wAndH, wAndH); }
  
  public String toString() { return n2(width) + "*" + n2(height) + " px"; }
  
  
}


abstract static class CompactAbstractMap<K, V> implements Map<K, V> {
  public int size() {
      return entrySet().size();
  }

  public boolean isEmpty() {
      return size() == 0;
  }

  public boolean containsValue(Object value) {
      Iterator<Entry<K, V>> i = entrySet().iterator();
      if (value == null) {
          while (i.hasNext()) {
              Entry<K, V> e = i.next();
              if (e.getValue() == null)
                  return true;
          }
      } else {
          while (i.hasNext()) {
              Entry<K, V> e = i.next();
              if (value.equals(e.getValue()))
                  return true;
          }
      }
      return false;
  }

  public boolean containsKey(Object key) {
      Iterator<Entry<K, V>> i = entrySet().iterator();
      if (key == null) {
          while (i.hasNext()) {
              Entry<K, V> e = i.next();
              if (e.getKey() == null)
                  return true;
          }
      } else {
          while (i.hasNext()) {
              Entry<K, V> e = i.next();
              if (key.equals(e.getKey()))
                  return true;
          }
      }
      return false;
  }

  public V get(Object key) {
      Iterator<Entry<K, V>> i = entrySet().iterator();
      if (key == null) {
          while (i.hasNext()) {
              Entry<K, V> e = i.next();
              if (e.getKey() == null)
                  return e.getValue();
          }
      } else {
          while (i.hasNext()) {
              Entry<K, V> e = i.next();
              if (key.equals(e.getKey()))
                  return e.getValue();
          }
      }
      return null;
  }

  public V put(K key, V value) {
      throw new UnsupportedOperationException();
  }

  public V remove(Object key) {
      Iterator<Entry<K, V>> i = entrySet().iterator();
      Entry<K, V> correctEntry = null;
      if (key == null) {
          while (correctEntry == null && i.hasNext()) {
              Entry<K, V> e = i.next();
              if (e.getKey() == null)
                  correctEntry = e;
          }
      } else {
          while (correctEntry == null && i.hasNext()) {
              Entry<K, V> e = i.next();
              if (key.equals(e.getKey()))
                  correctEntry = e;
          }
      }

      V oldValue = null;
      if (correctEntry != null) {
          oldValue = correctEntry.getValue();
          i.remove();
      }
      return oldValue;
  }

  public void putAll(Map<? extends K, ? extends V> m) {
      for (Entry<? extends K, ? extends V> e : m.entrySet())
          put(e.getKey(), e.getValue());
  }

  public void clear() {
      entrySet().clear();
  }

  public Set<K> keySet() {
      return new AbstractSet<K>() {
          public Iterator<K> iterator() {
              return new Iterator<K>() {
                  private Iterator<Entry<K, V>> i = entrySet().iterator();

                  public boolean hasNext() {
                      return i.hasNext();
                  }

                  public K next() {
                      return i.next().getKey();
                  }

                  public void remove() {
                      i.remove();
                  }
              };
          }

          public int size() {
              return CompactAbstractMap.this.size();
          }

          public boolean isEmpty() {
              return CompactAbstractMap.this.isEmpty();
          }

          public void clear() {
              CompactAbstractMap.this.clear();
          }

          public boolean contains(Object k) {
              return CompactAbstractMap.this.containsKey(k);
          }
      };
  }

  public Collection<V> values() {
      return new AbstractCollection<V>() {
          public Iterator<V> iterator() {
              return new Iterator<V>() {
                  private Iterator<Entry<K, V>> i = entrySet().iterator();

                  public boolean hasNext() {
                      return i.hasNext();
                  }

                  public V next() {
                      return i.next().getValue();
                  }

                  public void remove() {
                      i.remove();
                  }
              };
          }

          public int size() {
              return CompactAbstractMap.this.size();
          }

          public boolean isEmpty() {
              return CompactAbstractMap.this.isEmpty();
          }

          public void clear() {
              CompactAbstractMap.this.clear();
          }

          public boolean contains(Object v) {
              return CompactAbstractMap.this.containsValue(v);
          }
      };
  }

  public abstract Set<Entry<K, V>> entrySet();

  public boolean equals(Object o) {
      if (o == this)
          return true;

      if (!(o instanceof Map))
          return false;
      Map<?, ?> m = (Map<?, ?>) o;
      if (m.size() != size())
          return false;

      try {
          for (Entry<K, V> e : entrySet()) {
              K key = e.getKey();
              V value = e.getValue();
              if (value == null) {
                  if (!(m.get(key) == null && m.containsKey(key)))
                      return false;
              } else {
                  if (!value.equals(m.get(key)))
                      return false;
              }
          }
      } catch (ClassCastException unused) {
          return false;
      } catch (NullPointerException unused) {
          return false;
      }

      return true;
  }

  public int hashCode() {
      int h = 0;
      for (Entry<K, V> entry : entrySet())
          h += entry.hashCode();
      return h;
  }

  public String toString() {
      Iterator<Entry<K, V>> i = entrySet().iterator();
      if (!i.hasNext())
          return "{}";

      StringBuilder sb = new StringBuilder();
      sb.append('{');
      for (; ; ) {
          Entry<K, V> e = i.next();
          K key = e.getKey();
          V value = e.getValue();
          sb.append(key == this ? "(this Map)" : key);
          sb.append('=');
          sb.append(value == this ? "(this Map)" : value);
          if (!i.hasNext())
              return sb.append('}').toString();
          sb.append(',').append(' ');
      }
  }

  protected Object clone() throws CloneNotSupportedException {
      CompactAbstractMap<?, ?> result = (CompactAbstractMap<?, ?>) super.clone();
      return result;
  }

  public static class SimpleEntry<K, V>
          implements Entry<K, V>, java.io.Serializable {
      @java.io.Serial
      private static final long serialVersionUID = -8499721149061103585L;

      @SuppressWarnings("serial")
      private final K key;
      @SuppressWarnings("serial")
      private V value;

      public SimpleEntry(K key, V value) {
          this.key = key;
          this.value = value;
      }

      public SimpleEntry(Entry<? extends K, ? extends V> entry) {
          this.key = entry.getKey();
          this.value = entry.getValue();
      }

      public K getKey() {
          return key;
      }

      public V getValue() {
          return value;
      }

      public V setValue(V value) {
          V oldValue = this.value;
          this.value = value;
          return oldValue;
      }

      public boolean equals(Object o) {
          if (!(o instanceof Map.Entry))
              return false;
          Entry<?, ?> e = (Entry<?, ?>) o;
          return eq(key, e.getKey()) && eq(value, e.getValue());
      }

      public int hashCode() {
          return (key == null ? 0 : key.hashCode()) ^
                  (value == null ? 0 : value.hashCode());
      }

      public String toString() {
          return key + "=" + value;
      }

  }

  public static class SimpleImmutableEntry<K, V>
          implements Entry<K, V>, java.io.Serializable {
      @java.io.Serial
      private static final long serialVersionUID = 7138329143949025153L;

      @SuppressWarnings("serial")
      private final K key;
      @SuppressWarnings("serial")
      private final V value;

      public SimpleImmutableEntry(K key, V value) {
          this.key = key;
          this.value = value;
      }

      public SimpleImmutableEntry(Entry<? extends K, ? extends V> entry) {
          this.key = entry.getKey();
          this.value = entry.getValue();
      }

      public K getKey() {
          return key;
      }

      public V getValue() {
          return value;
      }

      public V setValue(V value) {
          throw new UnsupportedOperationException();
      }

      public boolean equals(Object o) {
          if (!(o instanceof Map.Entry))
              return false;
          Entry<?, ?> e = (Entry<?, ?>) o;
          return eq(key, e.getKey()) && eq(value, e.getValue());
      }

      public int hashCode() {
          return (key == null ? 0 : key.hashCode()) ^
                  (value == null ? 0 : value.hashCode());
      }

      public String toString() {
          return key + "=" + value;
      }
  }
}


static boolean scaffoldingEnabled(Object o) {
  return metaGet(o, "scaffolding") != null;
}


static <A> Value<A> value(A a) {
  return new Value<A>(a);
}


static <A, B> boolean containsKey(Map<A, B> map, A key) {
  return map != null && map.containsKey(key);
}


static <A, B> Map.Entry<A, B> simpleMapEntry(A key, B value) {
  return new Map.Entry<A, B>() {
    public A getKey() { return key; }
    public B getValue() { return value; }
    public B setValue(B newValue) { throw unimplemented(); }
  };
}


static double infinity() {
  return positiveInfinity();
}


static double fracNonNeg(double d) {
  return frac_nonNeg(d);
}


static double twoPi() {
  return Math.PI*2;
}


static String plusPrefixUnlessMinus(String s) {
  return startsWith(s, "-") ? s : "+" + s;
}




static RuntimeException unimplemented() {
  throw fail("TODO");
}

static RuntimeException unimplemented(String msg) {
  throw fail("TODO: " + msg);
}

static RuntimeException unimplemented(Object obj) {
  throw fail("TODO: implement method in " + className(obj));
}


static double positiveInfinity() {
  return Double.POSITIVE_INFINITY;
}


static double frac_nonNeg(double d) {
  return mod(d, 1);
}




// better modulo that gives positive numbers always
static int mod(int n, int m) {
  return (n % m + m) % m;
}

static long mod(long n, long m) {
  return (n % m + m) % m;
}

static BigInteger mod(BigInteger n, int m) {
  return n.mod(bigint(m));
}

static double mod(double n, double m) {
  return (n % m + m) % m;
}





static class Value<A> implements IF0<A> , IFieldsToList{
  A value;
  Value() {}
  Value(A value) {
  this.value = value;}

public boolean equals(Object o) {
if (!(o instanceof Value)) return false;
    Value __1 =  (Value) o;
    return eq(value, __1.value);
}

  public int hashCode() {
    int h = 82420049;
    h = boostHashCombine(h, _hashCode(value));
    return h;
  }
  public Object[] _fieldsToList() { return new Object[] {value}; }

  public A get() { return value; }
  
  public String toString() { return str(get()); }
}

}