hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@3781fd782472

     1 /**

     2  * Back 2 Browser Bytecode Translator

     3  * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

     4  *

     5  * This program is free software: you can redistribute it and/or modify

     6  * it under the terms of the GNU General Public License as published by

     7  * the Free Software Foundation, version 2 of the License.

     8  *

     9  * This program is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12  * GNU General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU General Public License

    15  * along with this program. Look for COPYING file in the top folder.

    16  * If not, see http://opensource.org/licenses/GPL-2.0.

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

    22 import org.apidesign.bck2brwsr.core.JavaScriptBody;

    23 import static org.apidesign.vm4brwsr.ByteCodeParser.*;

    24 import org.apidesign.vm4brwsr.ByteCodeParser.AnnotationParser;

    25 import org.apidesign.vm4brwsr.ByteCodeParser.BootMethodData;

    26 import org.apidesign.vm4brwsr.ByteCodeParser.CPX2;

    27 import org.apidesign.vm4brwsr.ByteCodeParser.ClassData;

    28 import org.apidesign.vm4brwsr.ByteCodeParser.FieldData;

    29 import org.apidesign.vm4brwsr.ByteCodeParser.MethodData;

    30 import org.apidesign.vm4brwsr.ByteCodeParser.StackMapIterator;

    31 import org.apidesign.vm4brwsr.ByteCodeParser.TrapData;

    32 import org.apidesign.vm4brwsr.ByteCodeParser.TrapDataIterator;

    34 /** Translator of the code inside class files to JavaScript.

    35  *

    36  * @author Jaroslav Tulach <jtulach@netbeans.org>

    37  */

    38 abstract class ByteCodeToJavaScript implements Appendable {

    39     private ClassData jc;

    40     private final Appendable out;

    41     private final StringArray classRefs = new StringArray();

    42     private boolean outChanged;

    43     private boolean callbacks;

    45     protected ByteCodeToJavaScript(Appendable out) {

    46         this.out = out;

    47     }

    49     @Override

    50     public final Appendable append(CharSequence csq) throws IOException {

    51         out.append(csq);

    52         outChanged = true;

    53         return this;

    54     }

    56     @Override

    57     public final Appendable append(CharSequence csq, int start, int end) throws IOException {

    58         out.append(csq, start, end);

    59         outChanged = true;

    60         return this;

    61     }

    63     @Override

    64     public final Appendable append(char c) throws IOException {

    65         out.append(c);

    66         outChanged = true;

    67         return this;

    68     }

    70     /* Collects additional required resources.

    71      *

    72      * @param internalClassName classes that were referenced and should be loaded in order the

    73      *   generated JavaScript code works properly. The names are in internal

    74      *   JVM form so String is <code>java/lang/String</code>.

    75      */

    76     protected abstract boolean requireReference(String internalClassName);

    78     /*

    79      * @param resourcePath name of resources to read

    80      */

    81     protected abstract void requireScript(String resourcePath) throws IOException;

    83     protected abstract void requireResource(String resourcePath) throws IOException;

    85     /** Allows subclasses to redefine what field a function representing a

    86      * class gets assigned. By default it returns the suggested name followed

    87      * by <code>" = "</code>;

    88      *

    89      * @param className suggested name of the class

    90      */

    91     /* protected */ String assignClass(String className) {

    92         return className + " = ";

    93     }

    94     /* protected */ String accessClass(String classOperation) {

    95         return classOperation;

    96     }

    98     final String accessClassFalse(String classOperation) {

    99         if (mangleClassName(jc.getClassName()).equals(classOperation)) {

   100             return "c";

   101         }

   102         classRefs.addIfMissing(classOperation);

   103         return "(refs_" + classOperation + " || (refs_" + classOperation + " = " + accessClass(classOperation) + "(false)))";

   104     }

   106     protected String accessField(String object, String mangledName,

   107                                  String[] fieldInfoName) throws IOException {

   108         return object + "." + mangledName;

   109     }

   111     protected String accessStaticMethod(

   112                              String object,

   113                              String mangledName,

   114                              String[] fieldInfoName) throws IOException {

   115         return object + "." + mangledName;

   116     }

   118     protected String accessVirtualMethod(

   119             String object,

   120             String mangledName,

   121             String[] fieldInfoName,

   122             int params

   123     ) throws IOException {

   124         return object + "." + mangledName + '(';

   125     }

   127     protected void declaredClass(ClassData classData, String mangledName)

   128             throws IOException {

   129     }

   131     protected void declaredField(FieldData fieldData,

   132                                  String destObject,

   133                                  String mangledName) throws IOException {

   134     }

   136     protected void declaredMethod(MethodData methodData,

   137                                   String destObject,

   138                                   String mangledName) throws IOException {

   139     }

   141     /** Prints out a debug message.

   142      *

   143      * @param msg the message

   144      * @return true if the message has been printed

   145      * @throws IOException

   146      */

   147     boolean debug(String msg) throws IOException {

   148         append(msg);

   149         return true;

   150     }

   152     /**

   153      * Converts a given class file to a JavaScript version.

   154      *

   155      * @param classFile input stream with code of the .class file

   156      * @return the initialization code for this class, if any. Otherwise <code>null</code>

   157      *

   158      * @throws IOException if something goes wrong during read or write or translating

   159      */

   161     public String compile(InputStream classFile) throws IOException {

   162         return compile(new ClassData(classFile));

   163     }

   165     protected String compile(ClassData classData) throws IOException {

   166         this.jc = classData;

   167         final String cn = this.jc.getClassName();

   168         try {

   169             return compileImpl(cn);

   170         } catch (IOException ex) {

   171             throw new IOException("Cannot compile " + cn + ":", ex);

   172         }

   173     }

   175     private String compileImpl(final String cn) throws IOException {

   176         this.callbacks = cn.endsWith("/$JsCallbacks$");

   177         if (jc.getMajor_version() < 50 && !cn.endsWith("/package-info")) {

   178             throw new IOException("Can't compile " + cn + ". Class file version " + jc.getMajor_version() + "."

   179                 + jc.getMinor_version() + " - recompile with -target 1.6 (at least)."

   180             );

   181         }

   182         byte[] arrData = jc.findAnnotationData(true);

   183         {

   184             String[] arr = findAnnotation(arrData, jc,

   185                 "org.apidesign.bck2brwsr.core.ExtraJavaScript",

   186                 "resource", "processByteCode"

   187             );

   188             if (arr != null) {

   189                 if (!arr[0].isEmpty()) {

   190                     requireScript(arr[0]);

   191                 }

   192                 if ("0".equals(arr[1])) {

   193                     return null;

   194                 }

   195             }

   196         }

   197         final String jsResource;

   198         {

   199             String[] arr = findAnnotation(arrData, jc,

   200                 "net.java.html.js.JavaScriptResource",

   201                 "value"

   202             );

   203             if (arr != null) {

   204                 if (arr[0].startsWith("/")) {

   205                     jsResource = arr[0];

   206                 } else {

   207                     int last = cn.lastIndexOf('/');

   208                     jsResource = cn.substring(0, last + 1).replace('.', '/') + arr[0];

   209                 }

   210             } else {

   211                 jsResource = null;

   212             }

   213         }

   214         String[] proto = findAnnotation(arrData, jc,

   215             "org.apidesign.bck2brwsr.core.JavaScriptPrototype",

   216             "container", "prototype"

   217         );

   218         StringArray toInitilize = new StringArray();

   219         final String className = className(jc);

   220         append("\n\n").append(assignClass(className));

   221         append("function ").append(className).append("() {");

   222         append("\n  var m;");

   223         append("\n  var CLS = ").append(className).append(';');

   224         append("\n  if (!CLS.$class) {");

   225         if (proto == null) {

   226             String sc = jc.getSuperClassName(); // with _

   227             append("\n    var pp = ").

   228                 append(accessClass(mangleClassName(sc))).append("(true);");

   229             append("\n    var p = CLS.prototype = pp;");

   230             append("\n    var c = p;");

   231             append("\n    var sprcls = pp.constructor.$class;");

   232         } else {

   233             append("\n    var p = CLS.prototype = ").append(proto[1]).append(";");

   234             if (proto[0] == null) {

   235                 proto[0] = "p";

   236             }

   237             append("\n    var c = ").append(proto[0]).append(";");

   238             append("\n    var sprcls = null;");

   239         }

   240         for (FieldData v : jc.getFields()) {

   241             if (v.isStatic()) {

   242                 if ((v.access & ACC_FINAL) != 0 && v.hasConstantValue()) {

   243                     if (v.getInternalSig().length() == 1 || v.getInternalSig().equals("Ljava/lang/String;")) {

   244                         continue;

   245                     }

   246                 }

   247                 append("\n  CLS.fld_").append(v.getName()).append(initField(v));

   248                 append("\n  m = c._").append(v.getName()).append(" = function (v) {")

   249                     .append("  if (arguments.length == 1) CLS.fld_").append(v.getName())

   250                     .append(" = v; return CLS.fld_").

   251                     append(v.getName()).append("; };");

   252             } else {

   253                 append("\n  m = c._").append(v.getName()).append(" = function (v) {")

   254                     .append("  if (arguments.length == 1) this.fld_").

   255                     append(className).append('_').append(v.getName())

   256                     .append(" = v; return this.fld_").

   257                     append(className).append('_').append(v.getName())

   258                     .append("; };");

   259             }

   261             declaredField(v, "c", "_" + v.getName());

   262         }

   263         for (MethodData m : jc.getMethods()) {

   264             byte[] onlyArr = m.findAnnotationData(true);

   265             if (javaScriptOnly(onlyArr)) continue;

   266             String destObject;

   267             String mn;

   268             append("\n    ");

   269             if (m.isStatic()) {

   270                 destObject = "c";

   271                 mn = generateStaticMethod(destObject, m, toInitilize);

   272             } else {

   273                 if (m.isConstructor()) {

   274                     destObject = "CLS";

   275                     mn = generateInstanceMethod(destObject, m);

   276                 } else {

   277                     destObject = "c";

   278                     mn = generateInstanceMethod(destObject, m);

   279                 }

   280             }

   281             declaredMethod(m, destObject, mn);

   282             byte[] runAnno = m.findAnnotationData(false);

   283             if (runAnno != null) {

   284                 append("\n    m.anno = {");

   285                 generateAnno(jc, runAnno);

   286                 append("\n    };");

   287             }

   288             append("\n    m.access = " + m.getAccess()).append(";");

   289             append("\n    m.cls = CLS;");

   290         }

   291         append("\n    c.constructor = CLS;");

   292         append("\n    function ").append(className).append("fillInstOf(x) {");

   293         String instOfName = "$instOf_" + className;

   294         append("\n        Object.defineProperty(x, '").append(instOfName).append("', { value : true });");

   295         if (jc.isInterface()) {

   296             for (MethodData m : jc.getMethods()) {

   297                 if ((m.getAccess() & ACC_ABSTRACT) == 0

   298                     && (m.getAccess() & ACC_STATIC) == 0

   299                     && (m.getAccess() & ACC_PRIVATE) == 0) {

   300                     final String mn = findMethodName(m, new StringBuilder());

   301                     append("\n        if (!x['").append(mn).append("']) Object.defineProperty(x, '").append(mn).append("', { value : c['").append(mn).append("']});");

   302                 }

   303             }

   304         }

   305         for (String superInterface : jc.getSuperInterfaces()) {

   306             String intrfc = mangleClassName(superInterface);

   307             append("\n      vm.").append(intrfc).append("(false)['fillInstOf'](x);");

   308             requireReference(superInterface);

   309         }

   310         append("\n    }");

   311         append("\n    if (!c.hasOwnProperty('fillInstOf')) Object.defineProperty(c, 'fillInstOf', { value: ").append(className).append("fillInstOf });");

   312         append("\n    ").append(className).append("fillInstOf(c);");

   313 //        obfuscationDelegate.exportJSProperty(this, "c", instOfName);

   314         append("\n    CLS.$class = 'temp';");

   315         append("\n    CLS.$class = ");

   316         append(accessClass("java_lang_Class(true);"));

   317         append("\n    CLS.$class.jvmName = '").append(cn).append("';");

   318         append("\n    CLS.$class.superclass = sprcls;");

   319         append("\n    CLS.$class.interfaces = function() { return [");

   320         {

   321             boolean first = true;

   322             for (String intrfc : jc.getSuperInterfaces()) {

   323                 if (!first) {

   324                     append(",");

   325                 }

   326                 requireReference(intrfc);

   327                 String mangledIface = mangleClassName(intrfc);

   328                 append("\n        ");

   329                 append(accessClass(mangledIface)).append("(false).constructor.$class");

   330                 first = false;

   331             }

   332         }

   333         append("\n    ]; };");

   334         append("\n    CLS.$class.access = ").append(jc.getAccessFlags()+";");

   335         append("\n    CLS.$class.cnstr = CLS;");

   336         byte[] classAnno = jc.findAnnotationData(false);

   337         if (classAnno != null) {

   338             append("\n    CLS.$class.anno = {");

   339             generateAnno(jc, classAnno);

   340             append("\n    };");

   341         }

   342         for (String init : toInitilize.toArray()) {

   343             append("\n    ").append(init).append("();");

   344         }

   345         for (String ref : classRefs.toArray()) {

   346             append("\n    var refs_").append(ref).append(";");

   347         }

   348         classRefs.clear();

   350         if (jsResource != null) {

   351             requireResource(jsResource);

   352         }

   354         append("\n  }");

   355         append("\n  if (arguments.length === 0) {");

   356         append("\n    if (!(this instanceof CLS)) {");

   357         append("\n      return new CLS();");

   358         append("\n    }");

   359         for (FieldData v : jc.getFields()) {

   360             byte[] onlyArr = v.findAnnotationData(true);

   361             if (javaScriptOnly(onlyArr)) continue;

   362             if (!v.isStatic()) {

   363                 append("\n    this.fld_").

   364                     append(className).append('_').

   365                     append(v.getName()).append(initField(v));

   366             }

   367         }

   368         append("\n    return this;");

   369         append("\n  }");

   370         append("\n  return arguments[0] ? new CLS() : CLS.prototype;");

   371         append("\n};");

   373         declaredClass(jc, className);

   375 //        StringBuilder sb = new StringBuilder();

   376 //        for (String init : toInitilize.toArray()) {

   377 //            sb.append("\n").append(init).append("();");

   378 //        }

   379         return "";

   380     }

   382     private boolean javaScriptOnly(byte[] anno) throws IOException {

   383         String[] only = findAnnotation(anno, jc,

   384             "org.apidesign.bck2brwsr.core.JavaScriptOnly",

   385             "name", "value"

   386         );

   387         if (only != null) {

   388             if (only[0] != null && only[1] != null) {

   389                 append("\n    p.").append(only[0]).append(" = ")

   390                     .append(only[1]).append(";");

   391             }

   392             if (ExportedSymbols.isMarkedAsExported(anno, jc)) {

   393                 append("\n    p['").append(only[0]).append("'] = p.")

   394                     .append(only[0]).append(";");

   395             }

   396             return true;

   397         }

   398         return false;

   399     }

   400     private String generateStaticMethod(String destObject, MethodData m, StringArray toInitilize) throws IOException {

   401         String jsb = javaScriptBody(destObject, m, true);

   402         if (jsb != null) {

   403             return jsb;

   404         }

   405         final String mn = findMethodName(m, new StringBuilder());

   406         boolean defineProp = generateMethod(destObject, mn, m);

   407         if (mn.equals("class__V")) {

   408             if (defineProp) {

   409                 toInitilize.add(accessClassFalse(className(jc)) + "['" + mn + "']");

   410             } else {

   411                 toInitilize.add(accessClassFalse(className(jc)) + "." + mn);

   412             }

   413         }

   414         return mn;

   415     }

   417     private String generateInstanceMethod(String destObject, MethodData m) throws IOException {

   418         String jsb = javaScriptBody(destObject, m, false);

   419         if (jsb != null) {

   420             return jsb;

   421         }

   422         final String mn = findMethodName(m, new StringBuilder());

   423         generateMethod(destObject, mn, m);

   424         return mn;

   425     }

   427     private boolean generateMethod(String destObject, String name, MethodData m)

   428             throws IOException {

   429         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   430         TrapDataIterator trap = m.getTrapDataIterator();

   431         final LocalsMapper lmapper =

   432                 new LocalsMapper(stackMapIterator.getArguments());

   434         boolean defineProp =

   435             "java/lang/Object".equals(jc.getClassName()) ||

   436             "java/lang/reflect/Array".equals(jc.getClassName());

   438         if (defineProp) {

   439             append("Object.defineProperty(").append(destObject).

   440             append(", '").append(name).append("', { configurable: true, writable: true, value: m = function(");

   441         } else {

   442             append("m = ").append(destObject).append(".").append(name).append(" = function(");

   443         }

   444         lmapper.outputArguments(this, m.isStatic());

   445         append(") {").append("\n");

   447         final byte[] byteCodes = m.getCode();

   448         if (byteCodes == null) {

   449             if (debug("  throw 'no code found for ")) {

   450                this

   451                .append(jc.getClassName()).append('.')

   452                .append(m.getName()).append("';\n");

   453             }

   454             if (defineProp) {

   455                 append("}});");

   456             } else {

   457                 append("};");

   458             }

   459             return defineProp;

   460         }

   462         final StackMapper smapper = new StackMapper();

   464         if (!m.isStatic()) {

   465             append("  var ").append(" lcA0 = this;\n");

   466         }

   468         int lastStackFrame;

   469         TrapData[] previousTrap = null;

   470         boolean wide = false;

   471         boolean didBranches;

   472         if (stackMapIterator.isEmpty()) {

   473             didBranches = false;

   474             lastStackFrame = 0;

   475         } else {

   476             didBranches = true;

   477             lastStackFrame = -1;

   478             append("\n  var gt = 0;\n");

   479         }

   481         int openBraces = 0;

   482         int topMostLabel = 0;

   483         for (int i = 0; i < byteCodes.length; i++) {

   484             int prev = i;

   485             outChanged = false;

   486             stackMapIterator.advanceTo(i);

   487             boolean changeInCatch = trap.advanceTo(i);

   488             if (changeInCatch || lastStackFrame != stackMapIterator.getFrameIndex()) {

   489                 if (previousTrap != null) {

   490                     generateCatch(previousTrap, i, topMostLabel);

   491                     previousTrap = null;

   492                 }

   493             }

   494             if (lastStackFrame != stackMapIterator.getFrameIndex()) {

   495                 smapper.flush(this);

   496                 if (i != 0) {

   497                     append("    }\n");

   498                 }

   499                 if (openBraces > 64) {

   500                     for (int c = 0; c < 64; c++) {

   501                         append("break;}\n");

   502                     }

   503                     openBraces = 1;

   504                     topMostLabel = i;

   505                 }

   507                 lastStackFrame = stackMapIterator.getFrameIndex();

   508                 lmapper.syncWithFrameLocals(stackMapIterator.getFrameLocals());

   509                 smapper.syncWithFrameStack(stackMapIterator.getFrameStack());

   510                 append("    X_" + i).append(": for (;;) { IF: if (gt <= " + i + ") {\n");

   511                 openBraces++;

   512                 changeInCatch = true;

   513             } else {

   514                 debug("    /* " + i + " */ ");

   515             }

   516             if (changeInCatch && trap.useTry()) {

   517                 append("try {");

   518                 previousTrap = trap.current();

   519             }

   520             final int c = readUByte(byteCodes, i);

   521             switch (c) {

   522                 case opc_aload_0:

   523                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(0));

   524                     break;

   525                 case opc_iload_0:

   526                     smapper.assign(this, VarType.INTEGER, lmapper.getI(0));

   527                     break;

   528                 case opc_lload_0:

   529                     smapper.assign(this, VarType.LONG, lmapper.getL(0));

   530                     break;

   531                 case opc_fload_0:

   532                     smapper.assign(this, VarType.FLOAT, lmapper.getF(0));

   533                     break;

   534                 case opc_dload_0:

   535                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(0));

   536                     break;

   537                 case opc_aload_1:

   538                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(1));

   539                     break;

   540                 case opc_iload_1:

   541                     smapper.assign(this, VarType.INTEGER, lmapper.getI(1));

   542                     break;

   543                 case opc_lload_1:

   544                     smapper.assign(this, VarType.LONG, lmapper.getL(1));

   545                     break;

   546                 case opc_fload_1:

   547                     smapper.assign(this, VarType.FLOAT, lmapper.getF(1));

   548                     break;

   549                 case opc_dload_1:

   550                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(1));

   551                     break;

   552                 case opc_aload_2:

   553                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(2));

   554                     break;

   555                 case opc_iload_2:

   556                     smapper.assign(this, VarType.INTEGER, lmapper.getI(2));

   557                     break;

   558                 case opc_lload_2:

   559                     smapper.assign(this, VarType.LONG, lmapper.getL(2));

   560                     break;

   561                 case opc_fload_2:

   562                     smapper.assign(this, VarType.FLOAT, lmapper.getF(2));

   563                     break;

   564                 case opc_dload_2:

   565                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(2));

   566                     break;

   567                 case opc_aload_3:

   568                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(3));

   569                     break;

   570                 case opc_iload_3:

   571                     smapper.assign(this, VarType.INTEGER, lmapper.getI(3));

   572                     break;

   573                 case opc_lload_3:

   574                     smapper.assign(this, VarType.LONG, lmapper.getL(3));

   575                     break;

   576                 case opc_fload_3:

   577                     smapper.assign(this, VarType.FLOAT, lmapper.getF(3));

   578                     break;

   579                 case opc_dload_3:

   580                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(3));

   581                     break;

   582                 case opc_iload: {

   583                     ++i;

   584                     final int indx = wide ? readUShort(byteCodes, i++)

   585                                           : readUByte(byteCodes, i);

   586                     wide = false;

   587                     smapper.assign(this, VarType.INTEGER, lmapper.getI(indx));

   588                     break;

   589                 }

   590                 case opc_lload: {

   591                     ++i;

   592                     final int indx = wide ? readUShort(byteCodes, i++)

   593                                           : readUByte(byteCodes, i);

   594                     wide = false;

   595                     smapper.assign(this, VarType.LONG, lmapper.getL(indx));

   596                     break;

   597                 }

   598                 case opc_fload: {

   599                     ++i;

   600                     final int indx = wide ? readUShort(byteCodes, i++)

   601                                           : readUByte(byteCodes, i);

   602                     wide = false;

   603                     smapper.assign(this, VarType.FLOAT, lmapper.getF(indx));

   604                     break;

   605                 }

   606                 case opc_dload: {

   607                     ++i;

   608                     final int indx = wide ? readUShort(byteCodes, i++)

   609                                           : readUByte(byteCodes, i);

   610                     wide = false;

   611                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(indx));

   612                     break;

   613                 }

   614                 case opc_aload: {

   615                     ++i;

   616                     final int indx = wide ? readUShort(byteCodes, i++)

   617                                           : readUByte(byteCodes, i);

   618                     wide = false;

   619                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(indx));

   620                     break;

   621                 }

   622                 case opc_istore: {

   623                     ++i;

   624                     final int indx = wide ? readUShort(byteCodes, i++)

   625                                           : readUByte(byteCodes, i);

   626                     wide = false;

   627                     emit(smapper, this, "var @1 = @2;",

   628                          lmapper.setI(indx), smapper.popI());

   629                     break;

   630                 }

   631                 case opc_lstore: {

   632                     ++i;

   633                     final int indx = wide ? readUShort(byteCodes, i++)

   634                                           : readUByte(byteCodes, i);

   635                     wide = false;

   636                     emit(smapper, this, "var @1 = @2;",

   637                          lmapper.setL(indx), smapper.popL());

   638                     break;

   639                 }

   640                 case opc_fstore: {

   641                     ++i;

   642                     final int indx = wide ? readUShort(byteCodes, i++)

   643                                           : readUByte(byteCodes, i);

   644                     wide = false;

   645                     emit(smapper, this, "var @1 = @2;",

   646                          lmapper.setF(indx), smapper.popF());

   647                     break;

   648                 }

   649                 case opc_dstore: {

   650                     ++i;

   651                     final int indx = wide ? readUShort(byteCodes, i++)

   652                                           : readUByte(byteCodes, i);

   653                     wide = false;

   654                     emit(smapper, this, "var @1 = @2;",

   655                          lmapper.setD(indx), smapper.popD());

   656                     break;

   657                 }

   658                 case opc_astore: {

   659                     ++i;

   660                     final int indx = wide ? readUShort(byteCodes, i++)

   661                                           : readUByte(byteCodes, i);

   662                     wide = false;

   663                     emit(smapper, this, "var @1 = @2;",

   664                          lmapper.setA(indx), smapper.popA());

   665                     break;

   666                 }

   667                 case opc_astore_0:

   668                     emit(smapper, this, "var @1 = @2;", lmapper.setA(0), smapper.popA());

   669                     break;

   670                 case opc_istore_0:

   671                     emit(smapper, this, "var @1 = @2;", lmapper.setI(0), smapper.popI());

   672                     break;

   673                 case opc_lstore_0:

   674                     emit(smapper, this, "var @1 = @2;", lmapper.setL(0), smapper.popL());

   675                     break;

   676                 case opc_fstore_0:

   677                     emit(smapper, this, "var @1 = @2;", lmapper.setF(0), smapper.popF());

   678                     break;

   679                 case opc_dstore_0:

   680                     emit(smapper, this, "var @1 = @2;", lmapper.setD(0), smapper.popD());

   681                     break;

   682                 case opc_astore_1:

   683                     emit(smapper, this, "var @1 = @2;", lmapper.setA(1), smapper.popA());

   684                     break;

   685                 case opc_istore_1:

   686                     emit(smapper, this, "var @1 = @2;", lmapper.setI(1), smapper.popI());

   687                     break;

   688                 case opc_lstore_1:

   689                     emit(smapper, this, "var @1 = @2;", lmapper.setL(1), smapper.popL());

   690                     break;

   691                 case opc_fstore_1:

   692                     emit(smapper, this, "var @1 = @2;", lmapper.setF(1), smapper.popF());

   693                     break;

   694                 case opc_dstore_1:

   695                     emit(smapper, this, "var @1 = @2;", lmapper.setD(1), smapper.popD());

   696                     break;

   697                 case opc_astore_2:

   698                     emit(smapper, this, "var @1 = @2;", lmapper.setA(2), smapper.popA());

   699                     break;

   700                 case opc_istore_2:

   701                     emit(smapper, this, "var @1 = @2;", lmapper.setI(2), smapper.popI());

   702                     break;

   703                 case opc_lstore_2:

   704                     emit(smapper, this, "var @1 = @2;", lmapper.setL(2), smapper.popL());

   705                     break;

   706                 case opc_fstore_2:

   707                     emit(smapper, this, "var @1 = @2;", lmapper.setF(2), smapper.popF());

   708                     break;

   709                 case opc_dstore_2:

   710                     emit(smapper, this, "var @1 = @2;", lmapper.setD(2), smapper.popD());

   711                     break;

   712                 case opc_astore_3:

   713                     emit(smapper, this, "var @1 = @2;", lmapper.setA(3), smapper.popA());

   714                     break;

   715                 case opc_istore_3:

   716                     emit(smapper, this, "var @1 = @2;", lmapper.setI(3), smapper.popI());

   717                     break;

   718                 case opc_lstore_3:

   719                     emit(smapper, this, "var @1 = @2;", lmapper.setL(3), smapper.popL());

   720                     break;

   721                 case opc_fstore_3:

   722                     emit(smapper, this, "var @1 = @2;", lmapper.setF(3), smapper.popF());

   723                     break;

   724                 case opc_dstore_3:

   725                     emit(smapper, this, "var @1 = @2;", lmapper.setD(3), smapper.popD());

   726                     break;

   727                 case opc_iadd:

   728                     smapper.replace(this, VarType.INTEGER, "(@1).add32(@2)", smapper.getI(1), smapper.popI());

   729                     break;

   730                 case opc_ladd:

   731                     smapper.replace(this, VarType.LONG, "(@1).add64(@2)", smapper.getL(1), smapper.popL());

   732                     break;

   733                 case opc_fadd:

   734                     smapper.replace(this, VarType.FLOAT, "(@1 + @2)", smapper.getF(1), smapper.popF());

   735                     break;

   736                 case opc_dadd:

   737                     smapper.replace(this, VarType.DOUBLE, "(@1 + @2)", smapper.getD(1), smapper.popD());

   738                     break;

   739                 case opc_isub:

   740                     smapper.replace(this, VarType.INTEGER, "(@1).sub32(@2)", smapper.getI(1), smapper.popI());

   741                     break;

   742                 case opc_lsub:

   743                     smapper.replace(this, VarType.LONG, "(@1).sub64(@2)", smapper.getL(1), smapper.popL());

   744                     break;

   745                 case opc_fsub:

   746                     smapper.replace(this, VarType.FLOAT, "(@1 - @2)", smapper.getF(1), smapper.popF());

   747                     break;

   748                 case opc_dsub:

   749                     smapper.replace(this, VarType.DOUBLE, "(@1 - @2)", smapper.getD(1), smapper.popD());

   750                     break;

   751                 case opc_imul:

   752                     smapper.replace(this, VarType.INTEGER, "(@1).mul32(@2)", smapper.getI(1), smapper.popI());

   753                     break;

   754                 case opc_lmul:

   755                     smapper.replace(this, VarType.LONG, "(@1).mul64(@2)", smapper.getL(1), smapper.popL());

   756                     break;

   757                 case opc_fmul:

   758                     smapper.replace(this, VarType.FLOAT, "(@1 * @2)", smapper.getF(1), smapper.popF());

   759                     break;

   760                 case opc_dmul:

   761                     smapper.replace(this, VarType.DOUBLE, "(@1 * @2)", smapper.getD(1), smapper.popD());

   762                     break;

   763                 case opc_idiv:

   764                     smapper.replace(this, VarType.INTEGER, "(@1).div32(@2)",

   765                          smapper.getI(1), smapper.popI());

   766                     break;

   767                 case opc_ldiv:

   768                     smapper.replace(this, VarType.LONG, "(@1).div64(@2)",

   769                          smapper.getL(1), smapper.popL());

   770                     break;

   771                 case opc_fdiv:

   772                     smapper.replace(this, VarType.FLOAT, "(@1 / @2)", smapper.getF(1), smapper.popF());

   773                     break;

   774                 case opc_ddiv:

   775                     smapper.replace(this, VarType.DOUBLE, "(@1 / @2)", smapper.getD(1), smapper.popD());

   776                     break;

   777                 case opc_irem:

   778 //

   779 // direct check yields few percents

   780 // in case of firefox 5.8s/4.6.s

   781                     smapper.replace(this, VarType.INTEGER, "((@1) % (@2))",

   782                          smapper.getI(1), smapper.popI());

   783 // with myNum being local variable in the generated script

   784 // it compiles and computes 5000 primes in 6s

   785 //                    smapper.replace(this, VarType.INTEGER, "myNum.mod32(@1, @2)",

   786 //                         smapper.getI(1), smapper.popI());

   787                     break;

   788                 case opc_lrem:

   789                     smapper.replace(this, VarType.LONG, "(@1).mod64(@2)",

   790                          smapper.getL(1), smapper.popL());

   791                     break;

   792                 case opc_frem:

   793                     smapper.replace(this, VarType.FLOAT, "(@1 % @2)", smapper.getF(1), smapper.popF());

   794                     break;

   795                 case opc_drem:

   796                     smapper.replace(this, VarType.DOUBLE, "(@1 % @2)", smapper.getD(1), smapper.popD());

   797                     break;

   798                 case opc_iand:

   799                     smapper.replace(this, VarType.INTEGER, "(@1 & @2)", smapper.getI(1), smapper.popI());

   800                     break;

   801                 case opc_land:

   802                     smapper.replace(this, VarType.LONG, "(@1).and64(@2)", smapper.getL(1), smapper.popL());

   803                     break;

   804                 case opc_ior:

   805                     smapper.replace(this, VarType.INTEGER, "(@1 | @2)", smapper.getI(1), smapper.popI());

   806                     break;

   807                 case opc_lor:

   808                     smapper.replace(this, VarType.LONG, "(@1).or64(@2)", smapper.getL(1), smapper.popL());

   809                     break;

   810                 case opc_ixor:

   811                     smapper.replace(this, VarType.INTEGER, "(@1 ^ @2)", smapper.getI(1), smapper.popI());

   812                     break;

   813                 case opc_lxor:

   814                     smapper.replace(this, VarType.LONG, "(@1).xor64(@2)", smapper.getL(1), smapper.popL());

   815                     break;

   816                 case opc_ineg:

   817                     smapper.replace(this, VarType.INTEGER, "(@1).neg32()", smapper.getI(0));

   818                     break;

   819                 case opc_lneg:

   820                     smapper.replace(this, VarType.LONG, "(@1).neg64()", smapper.getL(0));

   821                     break;

   822                 case opc_fneg:

   823                     smapper.replace(this, VarType.FLOAT, "(-@1)", smapper.getF(0));

   824                     break;

   825                 case opc_dneg:

   826                     smapper.replace(this, VarType.DOUBLE, "(-@1)", smapper.getD(0));

   827                     break;

   828                 case opc_ishl:

   829                     smapper.replace(this, VarType.INTEGER, "(@1 << @2)", smapper.getI(1), smapper.popI());

   830                     break;

   831                 case opc_lshl:

   832                     smapper.replace(this, VarType.LONG, "(@1).shl64(@2)", smapper.getL(1), smapper.popI());

   833                     break;

   834                 case opc_ishr:

   835                     smapper.replace(this, VarType.INTEGER, "(@1 >> @2)", smapper.getI(1), smapper.popI());

   836                     break;

   837                 case opc_lshr:

   838                     smapper.replace(this, VarType.LONG, "(@1).shr64(@2)", smapper.getL(1), smapper.popI());

   839                     break;

   840                 case opc_iushr:

   841                     smapper.replace(this, VarType.INTEGER, "(@1 >>> @2)", smapper.getI(1), smapper.popI());

   842                     break;

   843                 case opc_lushr:

   844                     smapper.replace(this, VarType.LONG, "(@1).ushr64(@2)", smapper.getL(1), smapper.popI());

   845                     break;

   846                 case opc_iinc: {

   847                     ++i;

   848                     final int varIndx = wide ? readUShort(byteCodes, i++)

   849                                              : readUByte(byteCodes, i);

   850                     ++i;

   851                     final int incrBy = wide ? readShort(byteCodes, i++)

   852                                             : byteCodes[i];

   853                     wide = false;

   854                     if (incrBy == 1) {

   855                         emit(smapper, this, "@1++;", lmapper.getI(varIndx));

   856                     } else {

   857                         emit(smapper, this, "@1 += @2;",

   858                              lmapper.getI(varIndx),

   859                              Integer.toString(incrBy));

   860                     }

   861                     break;

   862                 }

   863                 case opc_return:

   864                     emit(smapper, this, "return;");

   865                     break;

   866                 case opc_ireturn:

   867                     emit(smapper, this, "return @1;", smapper.popI());

   868                     break;

   869                 case opc_lreturn:

   870                     emit(smapper, this, "return @1;", smapper.popL());

   871                     break;

   872                 case opc_freturn:

   873                     emit(smapper, this, "return @1;", smapper.popF());

   874                     break;

   875                 case opc_dreturn:

   876                     emit(smapper, this, "return @1;", smapper.popD());

   877                     break;

   878                 case opc_areturn:

   879                     emit(smapper, this, "return @1;", smapper.popA());

   880                     break;

   881                 case opc_i2l:

   882                     smapper.replace(this, VarType.LONG, "@1", smapper.getI(0));

   883                     break;

   884                 case opc_i2f:

   885                     smapper.replace(this, VarType.FLOAT, "@1", smapper.getI(0));

   886                     break;

   887                 case opc_i2d:

   888                     smapper.replace(this, VarType.DOUBLE, "@1", smapper.getI(0));

   889                     break;

   890                 case opc_l2i:

   891                     smapper.replace(this, VarType.INTEGER, "(@1).toInt32()", smapper.getL(0));

   892                     break;

   893                     // max int check?

   894                 case opc_l2f:

   895                     smapper.replace(this, VarType.FLOAT, "(@1).toFP()", smapper.getL(0));

   896                     break;

   897                 case opc_l2d:

   898                     smapper.replace(this, VarType.DOUBLE, "(@1).toFP()", smapper.getL(0));

   899                     break;

   900                 case opc_f2d:

   901                     smapper.replace(this, VarType.DOUBLE, "@1",

   902                          smapper.getF(0));

   903                     break;

   904                 case opc_d2f:

   905                     smapper.replace(this, VarType.FLOAT, "@1",

   906                          smapper.getD(0));

   907                     break;

   908                 case opc_f2i:

   909                     smapper.replace(this, VarType.INTEGER, "(@1).toInt32()",

   910                          smapper.getF(0));

   911                     break;

   912                 case opc_f2l:

   913                     smapper.replace(this, VarType.LONG, "(@1).toLong()",

   914                          smapper.getF(0));

   915                     break;

   916                 case opc_d2i:

   917                     smapper.replace(this, VarType.INTEGER, "(@1).toInt32()",

   918                          smapper.getD(0));

   919                     break;

   920                 case opc_d2l:

   921                     smapper.replace(this, VarType.LONG, "(@1).toLong()", smapper.getD(0));

   922                     break;

   923                 case opc_i2b:

   924                     smapper.replace(this, VarType.INTEGER, "(@1).toInt8()", smapper.getI(0));

   925                     break;

   926                 case opc_i2c:

   927                 case opc_i2s:

   928                     smapper.replace(this, VarType.INTEGER, "(@1).toInt16()", smapper.getI(0));

   929                     break;

   930                 case opc_aconst_null:

   931                     smapper.assign(this, VarType.REFERENCE, "null");

   932                     break;

   933                 case opc_iconst_m1:

   934                     smapper.assign(this, VarType.INTEGER, "-1");

   935                     break;

   936                 case opc_iconst_0:

   937                     smapper.assign(this, VarType.INTEGER, "0");

   938                     break;

   939                 case opc_dconst_0:

   940                     smapper.assign(this, VarType.DOUBLE, "0");

   941                     break;

   942                 case opc_lconst_0:

   943                     smapper.assign(this, VarType.LONG, "0");

   944                     break;

   945                 case opc_fconst_0:

   946                     smapper.assign(this, VarType.FLOAT, "0");

   947                     break;

   948                 case opc_iconst_1:

   949                     smapper.assign(this, VarType.INTEGER, "1");

   950                     break;

   951                 case opc_lconst_1:

   952                     smapper.assign(this, VarType.LONG, "1");

   953                     break;

   954                 case opc_fconst_1:

   955                     smapper.assign(this, VarType.FLOAT, "1");

   956                     break;

   957                 case opc_dconst_1:

   958                     smapper.assign(this, VarType.DOUBLE, "1");

   959                     break;

   960                 case opc_iconst_2:

   961                     smapper.assign(this, VarType.INTEGER, "2");

   962                     break;

   963                 case opc_fconst_2:

   964                     smapper.assign(this, VarType.FLOAT, "2");

   965                     break;

   966                 case opc_iconst_3:

   967                     smapper.assign(this, VarType.INTEGER, "3");

   968                     break;

   969                 case opc_iconst_4:

   970                     smapper.assign(this, VarType.INTEGER, "4");

   971                     break;

   972                 case opc_iconst_5:

   973                     smapper.assign(this, VarType.INTEGER, "5");

   974                     break;

   975                 case opc_ldc: {

   976                     int indx = readUByte(byteCodes, ++i);

   977                     String v = encodeConstant(indx);

   978                     int type = VarType.fromConstantType(jc.getTag(indx));

   979                     smapper.assign(this, type, v);

   980                     break;

   981                 }

   982                 case opc_ldc_w:

   983                 case opc_ldc2_w: {

   984                     int indx = readUShortArg(byteCodes, i);

   985                     i += 2;

   986                     String v = encodeConstant(indx);

   987                     int type = VarType.fromConstantType(jc.getTag(indx));

   988                     if (type == VarType.LONG) {

   989                         final Long lv = new Long(v);

   990                         final int low = (int)(lv.longValue() & 0xFFFFFFFF);

   991                         final int hi = (int)(lv.longValue() >> 32);

   992                         if (hi == 0) {

   993                             smapper.assign(this, VarType.LONG, "0x" + Integer.toHexString(low));

   994                         } else {

   995                             smapper.assign(this, VarType.LONG,

   996                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   997                                     Integer.toHexString(low) + ")"

   998                             );

   999                         }

  1000                     } else {

  1001                         smapper.assign(this, type, v);

  1002                     }

  1003                     break;

  1004                 }

  1005                 case opc_lcmp:

  1006                     smapper.replace(this, VarType.INTEGER, "(@2).compare64(@1)", smapper.popL(), smapper.getL(0));

  1007                     break;

  1008                 case opc_fcmpl:

  1009                 case opc_fcmpg:

  1010                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1011                          smapper.popF(), smapper.popF(), smapper.pushI());

  1012                     break;

  1013                 case opc_dcmpl:

  1014                 case opc_dcmpg:

  1015                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1016                          smapper.popD(), smapper.popD(), smapper.pushI());

  1017                     break;

  1018                 case opc_if_acmpeq:

  1019                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1020                                    "===", topMostLabel);

  1021                     break;

  1022                 case opc_if_acmpne:

  1023                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1024                                    "!==", topMostLabel);

  1025                     break;

  1026                 case opc_if_icmpeq:

  1027                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1028                                    "==", topMostLabel);

  1029                     break;

  1030                 case opc_ifeq: {

  1031                     int indx = i + readShortArg(byteCodes, i);

  1032                     emitIf(smapper, this, "if ((@1) == 0) ",

  1033                          smapper.popI(), i, indx, topMostLabel);

  1034                     i += 2;

  1035                     break;

  1036                 }

  1037                 case opc_ifne: {

  1038                     int indx = i + readShortArg(byteCodes, i);

  1039                     emitIf(smapper, this, "if ((@1) != 0) ",

  1040                          smapper.popI(), i, indx, topMostLabel);

  1041                     i += 2;

  1042                     break;

  1043                 }

  1044                 case opc_iflt: {

  1045                     int indx = i + readShortArg(byteCodes, i);

  1046                     emitIf(smapper, this, "if ((@1) < 0) ",

  1047                          smapper.popI(), i, indx, topMostLabel);

  1048                     i += 2;

  1049                     break;

  1050                 }

  1051                 case opc_ifle: {

  1052                     int indx = i + readShortArg(byteCodes, i);

  1053                     emitIf(smapper, this, "if ((@1) <= 0) ",

  1054                          smapper.popI(), i, indx, topMostLabel);

  1055                     i += 2;

  1056                     break;

  1057                 }

  1058                 case opc_ifgt: {

  1059                     int indx = i + readShortArg(byteCodes, i);

  1060                     emitIf(smapper, this, "if ((@1) > 0) ",

  1061                          smapper.popI(), i, indx, topMostLabel);

  1062                     i += 2;

  1063                     break;

  1064                 }

  1065                 case opc_ifge: {

  1066                     int indx = i + readShortArg(byteCodes, i);

  1067                     emitIf(smapper, this, "if ((@1) >= 0) ",

  1068                          smapper.popI(), i, indx, topMostLabel);

  1069                     i += 2;

  1070                     break;

  1071                 }

  1072                 case opc_ifnonnull: {

  1073                     int indx = i + readShortArg(byteCodes, i);

  1074                     emitIf(smapper, this, "if ((@1) !== null) ",

  1075                          smapper.popA(), i, indx, topMostLabel);

  1076                     i += 2;

  1077                     break;

  1078                 }

  1079                 case opc_ifnull: {

  1080                     int indx = i + readShortArg(byteCodes, i);

  1081                     emitIf(smapper, this, "if ((@1) === null) ",

  1082                          smapper.popA(), i, indx, topMostLabel);

  1083                     i += 2;

  1084                     break;

  1085                 }

  1086                 case opc_if_icmpne:

  1087                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1088                                    "!=", topMostLabel);

  1089                     break;

  1090                 case opc_if_icmplt:

  1091                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1092                                    "<", topMostLabel);

  1093                     break;

  1094                 case opc_if_icmple:

  1095                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1096                                    "<=", topMostLabel);

  1097                     break;

  1098                 case opc_if_icmpgt:

  1099                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1100                                    ">", topMostLabel);

  1101                     break;

  1102                 case opc_if_icmpge:

  1103                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1104                                    ">=", topMostLabel);

  1105                     break;

  1106                 case opc_goto: {

  1107                     smapper.flush(this);

  1108                     int indx = i + readShortArg(byteCodes, i);

  1109                     goTo(this, i, indx, topMostLabel);

  1110                     i += 2;

  1111                     break;

  1112                 }

  1113                 case opc_lookupswitch: {

  1114                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1115                     break;

  1116                 }

  1117                 case opc_tableswitch: {

  1118                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1119                     break;

  1120                 }

  1121                 case opc_invokeinterface: {

  1122                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1123                     break;

  1124                 }

  1125                 case opc_invokevirtual:

  1126                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1127                     break;

  1128                 case opc_invokespecial:

  1129                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1130                     break;

  1131                 case opc_invokestatic:

  1132                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1133                     break;

  1134                 case opc_invokedynamic: {

  1135                     int indx = readUShortArg(byteCodes, i);

  1136                     println("invoke dynamic: " + indx);

  1137                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1138                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1139                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1140                     println("  type: " + methodHandle.cpx1);

  1141                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1142                     String mcn = mangleClassName(mi[0]);

  1143                     char[] returnType = {'V'};

  1144                     StringBuilder cnt = new StringBuilder();

  1145                     String mn = findMethodName(mi, cnt, returnType);

  1146                     StringBuilder sb = new StringBuilder();

  1147                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1148                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1149                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1150                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1151                     sb.append("  mn   : ").append(mn).append("\n");

  1152                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1153                     throw new IOException(sb.toString());

  1154                     /*

  1155                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1156                     String type = jc.StringValue(nameAndType.cpx2);

  1157                     String object = accessClass(mcn) + "(false)";

  1158                     if (mn.startsWith("cons_")) {

  1159                         object += ".constructor";

  1160                     }

  1161                     append("var metHan = ");

  1162                     append(accessStaticMethod(object, mn, mi));

  1163                     append('(');

  1164                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1165                     append(lookup);

  1166                     append(", '").append(mi[1]).append("', ");

  1167                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1168                     append(methodType).append("'").append(type).append("', null)");

  1169 //                    if (numArguments > 0) {

  1170 //                        append(vars[0]);

  1171 //                        for (int j = 1; j < numArguments; ++j) {

  1172 //                            append(", ");

  1173 //                            append(vars[j]);

  1174 //                        }

  1175 //                    }

  1176                     append(");");

  1177                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1178                     i += 4;

  1179                     break;

  1180                     */

  1181                 }

  1182                 case opc_new: {

  1183                     int indx = readUShortArg(byteCodes, i);

  1184                     String ci = jc.getClassName(indx);

  1185                     emit(smapper, this, "var @1 = new @2;",

  1186                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1187                     addReference(ci);

  1188                     i += 2;

  1189                     break;

  1190                 }

  1191                 case opc_newarray:

  1192                     int atype = readUByte(byteCodes, ++i);

  1193                     generateNewArray(atype, smapper);

  1194                     break;

  1195                 case opc_anewarray: {

  1196                     int type = readUShortArg(byteCodes, i);

  1197                     i += 2;

  1198                     generateANewArray(type, smapper);

  1199                     break;

  1200                 }

  1201                 case opc_multianewarray: {

  1202                     int type = readUShortArg(byteCodes, i);

  1203                     i += 2;

  1204                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1205                     break;

  1206                 }

  1207                 case opc_arraylength:

  1208                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1209                     break;

  1210                 case opc_lastore:

  1211                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1212                          smapper.popL(), smapper.popI(), smapper.popA());

  1213                     break;

  1214                 case opc_fastore:

  1215                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1216                          smapper.popF(), smapper.popI(), smapper.popA());

  1217                     break;

  1218                 case opc_dastore:

  1219                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1220                          smapper.popD(), smapper.popI(), smapper.popA());

  1221                     break;

  1222                 case opc_aastore:

  1223                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1224                          smapper.popA(), smapper.popI(), smapper.popA());

  1225                     break;

  1226                 case opc_iastore:

  1227                 case opc_bastore:

  1228                 case opc_castore:

  1229                 case opc_sastore:

  1230                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1231                          smapper.popI(), smapper.popI(), smapper.popA());

  1232                     break;

  1233                 case opc_laload:

  1234                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1235                          smapper.popI(), smapper.getA(0));

  1236                     break;

  1237                 case opc_faload:

  1238                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1239                          smapper.popI(), smapper.getA(0));

  1240                     break;

  1241                 case opc_daload:

  1242                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1243                          smapper.popI(), smapper.getA(0));

  1244                     break;

  1245                 case opc_aaload:

  1246                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1247                          smapper.popI(), smapper.getA(0));

  1248                     break;

  1249                 case opc_iaload:

  1250                 case opc_baload:

  1251                 case opc_caload:

  1252                 case opc_saload:

  1253                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1254                          smapper.popI(), smapper.getA(0));

  1255                     break;

  1256                 case opc_pop:

  1257                 case opc_pop2:

  1258                     smapper.pop(1);

  1259                     debug("/* pop */");

  1260                     break;

  1261                 case opc_dup: {

  1262                     final Variable v = smapper.get(0);

  1263                     if (smapper.isDirty()) {

  1264                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1265                     } else {

  1266                         smapper.assign(this, v.getType(), v);

  1267                     }

  1268                     break;

  1269                 }

  1270                 case opc_dup2: {

  1271                     final Variable vi1 = smapper.get(0);

  1273                     if (vi1.isCategory2()) {

  1274                         emit(smapper, this, "var @1 = @2;",

  1275                              smapper.pushT(vi1.getType()), vi1);

  1276                     } else {

  1277                         final Variable vi2 = smapper.get(1);

  1278                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1279                              smapper.pushT(vi2.getType()), vi2,

  1280                              smapper.pushT(vi1.getType()), vi1);

  1281                     }

  1282                     break;

  1283                 }

  1284                 case opc_dup_x1: {

  1285                     final Variable vi1 = smapper.pop(this);

  1286                     final Variable vi2 = smapper.pop(this);

  1287                     final Variable vo3 = smapper.pushT(vi1.getType());

  1288                     final Variable vo2 = smapper.pushT(vi2.getType());

  1289                     final Variable vo1 = smapper.pushT(vi1.getType());

  1291                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1292                          vo1, vi1, vo2, vi2, vo3, vo1);

  1293                     break;

  1294                 }

  1295                 case opc_dup2_x1: {

  1296                     final Variable vi1 = smapper.pop(this);

  1297                     final Variable vi2 = smapper.pop(this);

  1299                     if (vi1.isCategory2()) {

  1300                         final Variable vo3 = smapper.pushT(vi1.getType());

  1301                         final Variable vo2 = smapper.pushT(vi2.getType());

  1302                         final Variable vo1 = smapper.pushT(vi1.getType());

  1304                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1305                              vo1, vi1, vo2, vi2, vo3, vo1);

  1306                     } else {

  1307                         final Variable vi3 = smapper.pop(this);

  1308                         final Variable vo5 = smapper.pushT(vi2.getType());

  1309                         final Variable vo4 = smapper.pushT(vi1.getType());

  1310                         final Variable vo3 = smapper.pushT(vi3.getType());

  1311                         final Variable vo2 = smapper.pushT(vi2.getType());

  1312                         final Variable vo1 = smapper.pushT(vi1.getType());

  1314                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1315                              vo1, vi1, vo2, vi2, vo3, vi3);

  1316                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1317                              vo4, vo1, vo5, vo2);

  1318                     }

  1319                     break;

  1320                 }

  1321                 case opc_dup_x2: {

  1322                     final Variable vi1 = smapper.pop(this);

  1323                     final Variable vi2 = smapper.pop(this);

  1325                     if (vi2.isCategory2()) {

  1326                         final Variable vo3 = smapper.pushT(vi1.getType());

  1327                         final Variable vo2 = smapper.pushT(vi2.getType());

  1328                         final Variable vo1 = smapper.pushT(vi1.getType());

  1330                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1331                              vo1, vi1, vo2, vi2, vo3, vo1);

  1332                     } else {

  1333                         final Variable vi3 = smapper.pop(this);

  1334                         final Variable vo4 = smapper.pushT(vi1.getType());

  1335                         final Variable vo3 = smapper.pushT(vi3.getType());

  1336                         final Variable vo2 = smapper.pushT(vi2.getType());

  1337                         final Variable vo1 = smapper.pushT(vi1.getType());

  1339                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1340                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1341                     }

  1342                     break;

  1343                 }

  1344                 case opc_dup2_x2: {

  1345                     final Variable vi1 = smapper.pop(this);

  1346                     final Variable vi2 = smapper.pop(this);

  1348                     if (vi1.isCategory2()) {

  1349                         if (vi2.isCategory2()) {

  1350                             final Variable vo3 = smapper.pushT(vi1.getType());

  1351                             final Variable vo2 = smapper.pushT(vi2.getType());

  1352                             final Variable vo1 = smapper.pushT(vi1.getType());

  1354                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1355                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1356                         } else {

  1357                             final Variable vi3 = smapper.pop(this);

  1358                             final Variable vo4 = smapper.pushT(vi1.getType());

  1359                             final Variable vo3 = smapper.pushT(vi3.getType());

  1360                             final Variable vo2 = smapper.pushT(vi2.getType());

  1361                             final Variable vo1 = smapper.pushT(vi1.getType());

  1363                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1364                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1365                         }

  1366                     } else {

  1367                         final Variable vi3 = smapper.pop(this);

  1369                         if (vi3.isCategory2()) {

  1370                             final Variable vo5 = smapper.pushT(vi2.getType());

  1371                             final Variable vo4 = smapper.pushT(vi1.getType());

  1372                             final Variable vo3 = smapper.pushT(vi3.getType());

  1373                             final Variable vo2 = smapper.pushT(vi2.getType());

  1374                             final Variable vo1 = smapper.pushT(vi1.getType());

  1376                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1377                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1378                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1379                                  vo4, vo1, vo5, vo2);

  1380                         } else {

  1381                             final Variable vi4 = smapper.pop(this);

  1382                             final Variable vo6 = smapper.pushT(vi2.getType());

  1383                             final Variable vo5 = smapper.pushT(vi1.getType());

  1384                             final Variable vo4 = smapper.pushT(vi4.getType());

  1385                             final Variable vo3 = smapper.pushT(vi3.getType());

  1386                             final Variable vo2 = smapper.pushT(vi2.getType());

  1387                             final Variable vo1 = smapper.pushT(vi1.getType());

  1389                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1390                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1391                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1392                                  vo5, vo1, vo6, vo2);

  1393                         }

  1394                     }

  1395                     break;

  1396                 }

  1397                 case opc_swap: {

  1398                     final Variable vi1 = smapper.get(0);

  1399                     final Variable vi2 = smapper.get(1);

  1401                     if (vi1.getType() == vi2.getType()) {

  1402                         final Variable tmp = smapper.pushT(vi1.getType());

  1404                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1405                              tmp, vi1, vi2);

  1406                         smapper.pop(1);

  1407                     } else {

  1408                         smapper.pop(2);

  1409                         smapper.pushT(vi1.getType());

  1410                         smapper.pushT(vi2.getType());

  1411                     }

  1412                     break;

  1413                 }

  1414                 case opc_bipush:

  1415                     smapper.assign(this, VarType.INTEGER,

  1416                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1417                     break;

  1418                 case opc_sipush:

  1419                     smapper.assign(this, VarType.INTEGER,

  1420                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1421                     );

  1422                     i += 2;

  1423                     break;

  1424                 case opc_getfield: {

  1425                     int indx = readUShortArg(byteCodes, i);

  1426                     String[] fi = jc.getFieldInfoName(indx);

  1427                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1428                     final String mangleClass = mangleClassName(fi[0]);

  1429                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1430                     emit(smapper, this, "var @2 = @1.fld_@4_@3 || @5.call(@1);",

  1431                          smapper.popA(), smapper.pushT(type), fi[1], mangleClass,

  1432                          accessField(mangleClassAccess, "_" + fi[1], fi)

  1433                     );

  1434                     i += 2;

  1435                     addReference(fi[0]);

  1436                     break;

  1437                 }

  1438                 case opc_putfield: {

  1439                     int indx = readUShortArg(byteCodes, i);

  1440                     String[] fi = jc.getFieldInfoName(indx);

  1441                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1442                     final String mangleClass = mangleClassName(fi[0]);

  1443                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1444                     emit(smapper, this, "@3.call(@2, @1);",

  1445                          smapper.popT(type),

  1446                          smapper.popA(),

  1447                          accessField(mangleClassAccess,

  1448                                      "_" + fi[1], fi));

  1449                     i += 2;

  1450                     addReference(fi[0]);

  1451                     break;

  1452                 }

  1453                 case opc_getstatic: {

  1454                     int indx = readUShortArg(byteCodes, i);

  1455                     String[] fi = jc.getFieldInfoName(indx);

  1456                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1457                     String ac = accessClassFalse(mangleClassName(fi[0]));

  1458                     String af = accessField(ac, "_" + fi[1], fi);

  1459                     smapper.assign(this, type, af + "()");

  1460                     i += 2;

  1461                     addReference(fi[0]);

  1462                     break;

  1463                 }

  1464                 case opc_putstatic: {

  1465                     int indx = readUShortArg(byteCodes, i);

  1466                     String[] fi = jc.getFieldInfoName(indx);

  1467                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1468                     emit(smapper, this, "@1._@2(@3);",

  1469                          accessClassFalse(mangleClassName(fi[0])), fi[1],

  1470                          smapper.popT(type));

  1471                     i += 2;

  1472                     addReference(fi[0]);

  1473                     break;

  1474                 }

  1475                 case opc_checkcast: {

  1476                     int indx = readUShortArg(byteCodes, i);

  1477                     generateCheckcast(indx, smapper);

  1478                     i += 2;

  1479                     break;

  1480                 }

  1481                 case opc_instanceof: {

  1482                     int indx = readUShortArg(byteCodes, i);

  1483                     generateInstanceOf(indx, smapper);

  1484                     i += 2;

  1485                     break;

  1486                 }

  1487                 case opc_athrow: {

  1488                     final CharSequence v = smapper.popA();

  1489                     smapper.clear();

  1491                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1492                          smapper.pushA(), v);

  1493                     break;

  1494                 }

  1496                 case opc_monitorenter: {

  1497                     debug("/* monitor enter */");

  1498                     smapper.popA();

  1499                     break;

  1500                 }

  1502                 case opc_monitorexit: {

  1503                     debug("/* monitor exit */");

  1504                     smapper.popA();

  1505                     break;

  1506                 }

  1508                 case opc_wide:

  1509                     wide = true;

  1510                     break;

  1512                 default: {

  1513                     wide = false;

  1514                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1515                          Integer.toString(c));

  1516                 }

  1517             }

  1518             if (debug(" //")) {

  1519                 generateByteCodeComment(prev, i, byteCodes);

  1520             }

  1521             if (outChanged) {

  1522                 append("\n");

  1523             }

  1524         }

  1525         if (previousTrap != null) {

  1526             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1527         }

  1528         if (didBranches) {

  1529             append("\n    }\n");

  1530         }

  1531         while (openBraces-- > 0) {

  1532             append('}');

  1533         }

  1534         if (defineProp) {

  1535             append("\n}});");

  1536         } else {

  1537             append("\n};");

  1538         }

  1539         return defineProp;

  1540     }

  1542     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1543         int i, final CharSequence v2, final CharSequence v1,

  1544         final String test, int topMostLabel

  1545     ) throws IOException {

  1546         mapper.flush(this);

  1547         int indx = i + readShortArg(byteCodes, i);

  1548         append("if ((").append(v1)

  1549            .append(") ").append(test).append(" (")

  1550            .append(v2).append(")) ");

  1551         goTo(this, i, indx, topMostLabel);

  1552         return i + 2;

  1553     }

  1555     private int readInt4(byte[] byteCodes, int offset) {

  1556         final int d = byteCodes[offset + 0] << 24;

  1557         final int c = byteCodes[offset + 1] << 16;

  1558         final int b = byteCodes[offset + 2] << 8;

  1559         final int a = byteCodes[offset + 3];

  1560         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1561     }

  1562     private static int readUByte(byte[] byteCodes, int offset) {

  1563         return byteCodes[offset] & 0xff;

  1564     }

  1566     private static int readUShort(byte[] byteCodes, int offset) {

  1567         return ((byteCodes[offset] & 0xff) << 8)

  1568                     | (byteCodes[offset + 1] & 0xff);

  1569     }

  1570     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1571         return readUShort(byteCodes, offsetInstruction + 1);

  1572     }

  1574     private static int readShort(byte[] byteCodes, int offset) {

  1575         int signed = byteCodes[offset];

  1576         byte b0 = (byte)signed;

  1577         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1578     }

  1579     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1580         return readShort(byteCodes, offsetInstruction + 1);

  1581     }

  1583     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1584         int i = 0;

  1585         Boolean count = null;

  1586         boolean array = false;

  1587         sig.append("__");

  1588         int firstPos = sig.length();

  1589         while (i < descriptor.length()) {

  1590             char ch = descriptor.charAt(i++);

  1591             switch (ch) {

  1592                 case '(':

  1593                     count = true;

  1594                     continue;

  1595                 case ')':

  1596                     count = false;

  1597                     continue;

  1598                 case 'B':

  1599                 case 'C':

  1600                 case 'D':

  1601                 case 'F':

  1602                 case 'I':

  1603                 case 'J':

  1604                 case 'S':

  1605                 case 'Z':

  1606                     if (count) {

  1607                         if (array) {

  1608                             sig.append("_3");

  1609                         }

  1610                         sig.append(ch);

  1611                         if (ch == 'J' || ch == 'D') {

  1612                             cnt.append('1');

  1613                         } else {

  1614                             cnt.append('0');

  1615                         }

  1616                     } else {

  1617                         sig.insert(firstPos, ch);

  1618                         if (array) {

  1619                             returnType[0] = '[';

  1620                             sig.insert(firstPos, "_3");

  1621                         } else {

  1622                             returnType[0] = ch;

  1623                         }

  1624                     }

  1625                     array = false;

  1626                     continue;

  1627                 case 'V':

  1628                     assert !count;

  1629                     returnType[0] = 'V';

  1630                     sig.insert(firstPos, 'V');

  1631                     continue;

  1632                 case 'L':

  1633                     int next = descriptor.indexOf(';', i);

  1634                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1635                     if (count) {

  1636                         if (array) {

  1637                             sig.append("_3");

  1638                         }

  1639                         sig.append(realSig);

  1640                         cnt.append('0');

  1641                     } else {

  1642                         sig.insert(firstPos, realSig);

  1643                         if (array) {

  1644                             sig.insert(firstPos, "_3");

  1645                         }

  1646                         returnType[0] = 'L';

  1647                     }

  1648                     i = next + 1;

  1649                     array = false;

  1650                     continue;

  1651                 case '[':

  1652                     array = true;

  1653                     continue;

  1654                 default:

  1655                     throw new IllegalStateException("Invalid char: " + ch);

  1656             }

  1657         }

  1658     }

  1660     static String mangleSig(String sig) {

  1661         return mangleSig(sig, 0, sig.length());

  1662     }

  1664     private static String mangleMethodName(String name) {

  1665         StringBuilder sb = new StringBuilder(name.length() * 2);

  1666         int last = name.length();

  1667         for (int i = 0; i < last; i++) {

  1668             final char ch = name.charAt(i);

  1669             switch (ch) {

  1670                 case '_': sb.append("_1"); break;

  1671                 default: sb.append(ch); break;

  1672             }

  1673         }

  1674         return sb.toString();

  1675     }

  1676     private static String mangleSig(String txt, int first, int last) {

  1677         StringBuilder sb = new StringBuilder((last - first) * 2);

  1678         for (int i = first; i < last; i++) {

  1679             final char ch = txt.charAt(i);

  1680             switch (ch) {

  1681                 case '/': sb.append('_'); break;

  1682                 case '_': sb.append("_1"); break;

  1683                 case ';': sb.append("_2"); break;

  1684                 case '[': sb.append("_3"); break;

  1685                 default:

  1686                     if (Character.isJavaIdentifierPart(ch)) {

  1687                         sb.append(ch);

  1688                     } else {

  1689                         sb.append("_0");

  1690                         String hex = Integer.toHexString(ch).toLowerCase();

  1691                         for (int m = hex.length(); m < 4; m++) {

  1692                             sb.append("0");

  1693                         }

  1694                         sb.append(hex);

  1695                     }

  1696                 break;

  1697             }

  1698         }

  1699         return sb.toString();

  1700     }

  1702     private static String mangleClassName(String name) {

  1703         return mangleSig(name);

  1704     }

  1706     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1707         StringBuilder name = new StringBuilder();

  1708         if ("<init>".equals(m.getName())) { // NOI18N

  1709             name.append("cons"); // NOI18N

  1710         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1711             name.append("class"); // NOI18N

  1712         } else {

  1713             name.append(mangleMethodName(m.getName()));

  1714         }

  1716         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1717         return name.toString();

  1718     }

  1720     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1721         StringBuilder name = new StringBuilder();

  1722         String descr = mi[2];//mi.getDescriptor();

  1723         String nm= mi[1];

  1724         if ("<init>".equals(nm)) { // NOI18N

  1725             name.append("cons"); // NOI18N

  1726         } else {

  1727             name.append(mangleMethodName(nm));

  1728         }

  1729         countArgs(descr, returnType, name, cnt);

  1730         return name.toString();

  1731     }

  1733     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1734     throws IOException {

  1735         int methodIndex = readUShortArg(byteCodes, i);

  1736         String[] mi = jc.getFieldInfoName(methodIndex);

  1737         char[] returnType = { 'V' };

  1738         StringBuilder cnt = new StringBuilder();

  1739         String mn = findMethodName(mi, cnt, returnType);

  1741         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1742         final CharSequence[] vars = new CharSequence[numArguments];

  1744         for (int j = numArguments - 1; j >= 0; --j) {

  1745             vars[j] = mapper.popValue();

  1746         }

  1748         if ((

  1749             "newUpdater__Ljava_util_concurrent_atomic_AtomicIntegerFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1750             && "java/util/concurrent/atomic/AtomicIntegerFieldUpdater".equals(mi[0])

  1751         ) || (

  1752             "newUpdater__Ljava_util_concurrent_atomic_AtomicLongFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1753             && "java/util/concurrent/atomic/AtomicLongFieldUpdater".equals(mi[0])

  1754         )) {

  1755             if (vars[1] instanceof String) {

  1756                 String field = vars[1].toString();

  1757                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1758                     vars[1] = "c._" + field.substring(1, field.length() - 1);

  1759                 }

  1760             }

  1761         }

  1762         if (

  1763             "newUpdater__Ljava_util_concurrent_atomic_AtomicReferenceFieldUpdater_2Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1764             && "java/util/concurrent/atomic/AtomicReferenceFieldUpdater".equals(mi[0])

  1765         ) {

  1766             if (vars[1] instanceof String) {

  1767                 String field = vars[2].toString();

  1768                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1769                     vars[2] = "c._" + field.substring(1, field.length() - 1);

  1770                 }

  1771             }

  1772         }

  1774         if (returnType[0] != 'V') {

  1775             mapper.flush(this);

  1776             append("var ")

  1777                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1778                .append(" = ");

  1779         }

  1781         final String in = mi[0];

  1782         String mcn;

  1783         if (callbacks && (

  1784             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1785             in.equals("org/netbeans/html/boot/spi/Fn")

  1786         )) {

  1787             mcn = "java_lang_Class";

  1788         } else {

  1789             mcn = mangleClassName(in);

  1790         }

  1791         String object = accessClassFalse(mcn);

  1792         if (mn.startsWith("cons_")) {

  1793             object += ".constructor";

  1794         }

  1795         append(accessStaticMethod(object, mn, mi));

  1796         if (isStatic) {

  1797             append('(');

  1798         } else {

  1799             append(".call(");

  1800         }

  1801         if (numArguments > 0) {

  1802             append(vars[0]);

  1803             for (int j = 1; j < numArguments; ++j) {

  1804                 append(", ");

  1805                 append(vars[j]);

  1806             }

  1807         }

  1808         append(");");

  1809         i += 2;

  1810         addReference(in);

  1811         return i;

  1812     }

  1813     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1814     throws IOException {

  1815         int methodIndex = readUShortArg(byteCodes, i);

  1816         String[] mi = jc.getFieldInfoName(methodIndex);

  1817         char[] returnType = { 'V' };

  1818         StringBuilder cnt = new StringBuilder();

  1819         String mn = findMethodName(mi, cnt, returnType);

  1821         final int numArguments = cnt.length() + 1;

  1822         final CharSequence[] vars =  new CharSequence[numArguments];

  1824         for (int j = numArguments - 1; j >= 0; --j) {

  1825             vars[j] = mapper.popValue();

  1826         }

  1828         if (returnType[0] != 'V') {

  1829             mapper.flush(this);

  1830             append("var ")

  1831                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1832                .append(" = ");

  1833         }

  1835         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1836         String sep = "";

  1837         for (int j = 1; j < numArguments; ++j) {

  1838             append(sep);

  1839             append(vars[j]);

  1840             sep = ", ";

  1841         }

  1842         append(");");

  1843         i += 2;

  1844         return i;

  1845     }

  1847     private void addReference(String cn) throws IOException {

  1848         if (requireReference(cn)) {

  1849             debug(" /* needs " + cn + " */");

  1850         }

  1851     }

  1853     private void outType(String d, StringBuilder out) {

  1854         int arr = 0;

  1855         while (d.charAt(0) == '[') {

  1856             out.append('A');

  1857             d = d.substring(1);

  1858         }

  1859         if (d.charAt(0) == 'L') {

  1860             assert d.charAt(d.length() - 1) == ';';

  1861             out.append(mangleClassName(d).substring(0, d.length() - 1));

  1862         } else {

  1863             out.append(d);

  1864         }

  1865     }

  1867     private String encodeConstant(int entryIndex) throws IOException {

  1868         String[] classRef = { null };

  1869         String s = jc.stringValue(entryIndex, classRef);

  1870         if (classRef[0] != null) {

  1871             if (classRef[0].startsWith("[")) {

  1872                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1873             } else {

  1874                 addReference(classRef[0]);

  1875                 s = accessClassFalse(mangleClassName(s)) + ".constructor.$class";

  1876             }

  1877         }

  1878         return s;

  1879     }

  1881     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1882         byte[] arr = m.findAnnotationData(true);

  1883         if (arr == null) {

  1884             return null;

  1885         }

  1886         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1887         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1888         class P extends AnnotationParser {

  1889             public P() {

  1890                 super(false, true);

  1891             }

  1893             int cnt;

  1894             String[] args = new String[30];

  1895             String body;

  1896             boolean javacall;

  1897             boolean html4j;

  1899             @Override

  1900             protected void visitAttr(String type, String attr, String at, String value) {

  1901                 if (type.equals(jvmType)) {

  1902                     if ("body".equals(attr)) {

  1903                         body = value;

  1904                     } else if ("args".equals(attr)) {

  1905                         args[cnt++] = value;

  1906                     } else {

  1907                         throw new IllegalArgumentException(attr);

  1908                     }

  1909                 }

  1910                 if (type.equals(htmlType)) {

  1911                     html4j = true;

  1912                     if ("body".equals(attr)) {

  1913                         body = value;

  1914                     } else if ("args".equals(attr)) {

  1915                         args[cnt++] = value;

  1916                     } else if ("javacall".equals(attr)) {

  1917                         javacall = "1".equals(value);

  1918                     } else if ("wait4js".equals(attr)) {

  1919                         // ignore, we always invoke synchronously

  1920                     } else {

  1921                         throw new IllegalArgumentException(attr);

  1922                     }

  1923                 }

  1924             }

  1925         }

  1926         P p = new P();

  1927         p.parse(arr, jc);

  1928         if (p.body == null) {

  1929             return null;

  1930         }

  1931         StringBuilder cnt = new StringBuilder();

  1932         final String mn = findMethodName(m, cnt);

  1933         append("m = ").append(destObject).append(".").append(mn);

  1934         append(" = function(");

  1935         String space = "";

  1936         int index = 0;

  1937         StringBuilder toValue = new StringBuilder();

  1938         for (int i = 0; i < cnt.length(); i++) {

  1939             append(space);

  1940             space = outputArg(this, p.args, index);

  1941             if (p.html4j && space.length() > 0) {

  1942                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1943                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1944                     append(p.args[index]).append(");");

  1945             }

  1946             index++;

  1947         }

  1948         append(") {").append("\n");

  1949         append(toValue.toString());

  1950         if (p.javacall) {

  1951             int lastSlash = jc.getClassName().lastIndexOf('/');

  1952             final String pkg = jc.getClassName().substring(0, lastSlash);

  1953             append(mangleCallbacks(pkg, p.body));

  1954             requireReference(pkg + "/$JsCallbacks$");

  1955         } else {

  1956             append(p.body);

  1957         }

  1958         append("\n}\n");

  1959         return mn;

  1960     }

  1962     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1963         StringBuilder sb = new StringBuilder();

  1964         int pos = 0;

  1965         for (;;) {

  1966             int next = body.indexOf(".@", pos);

  1967             if (next == -1) {

  1968                 sb.append(body.substring(pos));

  1969                 body = sb.toString();

  1970                 break;

  1971             }

  1972             int ident = next;

  1973             while (ident > 0) {

  1974                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1975                     ident++;

  1976                     break;

  1977                 }

  1978             }

  1979             String refId = body.substring(ident, next);

  1981             sb.append(body.substring(pos, ident));

  1983             int sigBeg = body.indexOf('(', next);

  1984             int sigEnd = body.indexOf(')', sigBeg);

  1985             int colon4 = body.indexOf("::", next);

  1986             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1987                 throw new IllegalStateException("Malformed body " + body);

  1988             }

  1989             String fqn = body.substring(next + 2, colon4);

  1990             String method = body.substring(colon4 + 2, sigBeg);

  1991             String params = body.substring(sigBeg, sigEnd + 1);

  1993             int paramBeg = body.indexOf('(', sigEnd + 1);

  1995             sb.append("vm.").append(mangleClassName(pkgName)).append("_$JsCallbacks$(false)._VM().");

  1996             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1997             sb.append("(").append(refId);

  1998             if (body.charAt(paramBeg + 1) != ')') {

  1999                 sb.append(",");

  2000             }

  2001             pos = paramBeg + 1;

  2002         }

  2003         sb = null;

  2004         pos = 0;

  2005         for (;;) {

  2006             int next = body.indexOf("@", pos);

  2007             if (next == -1) {

  2008                 if (sb == null) {

  2009                     return body;

  2010                 }

  2011                 sb.append(body.substring(pos));

  2012                 return sb;

  2013             }

  2014             if (sb == null) {

  2015                 sb = new StringBuilder();

  2016             }

  2018             sb.append(body.substring(pos, next));

  2020             int sigBeg = body.indexOf('(', next);

  2021             int sigEnd = body.indexOf(')', sigBeg);

  2022             int colon4 = body.indexOf("::", next);

  2023             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2024                 throw new IllegalStateException("Malformed body " + body);

  2025             }

  2026             String fqn = body.substring(next + 1, colon4);

  2027             String method = body.substring(colon4 + 2, sigBeg);

  2028             String params = body.substring(sigBeg, sigEnd + 1);

  2030             int paramBeg = body.indexOf('(', sigEnd + 1);

  2032             sb.append("vm.").append(mangleClassName(pkgName)).append("_$JsCallbacks$(false)._VM().");

  2033             sb.append(mangleJsCallbacks(fqn, method, params, true));

  2034             sb.append("(");

  2035             pos = paramBeg + 1;

  2036         }

  2037     }

  2039     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  2040         if (params.startsWith("(")) {

  2041             params = params.substring(1);

  2042         }

  2043         if (params.endsWith(")")) {

  2044             params = params.substring(0, params.length() - 1);

  2045         }

  2046         StringBuilder sb = new StringBuilder();

  2047         final String fqnu = fqn.replace('.', '_');

  2048         final String rfqn = mangleClassName(fqnu);

  2049         final String rm = mangleMethodName(method);

  2050         final String srp;

  2051         {

  2052             StringBuilder pb = new StringBuilder();

  2053             int len = params.length();

  2054             int indx = 0;

  2055             while (indx < len) {

  2056                 char ch = params.charAt(indx);

  2057                 if (ch == '[' || ch == 'L') {

  2058                     int column = params.indexOf(';', indx) + 1;

  2059                     if (column > indx) {

  2060                         String real = params.substring(indx, column);

  2061                         if ("Ljava/lang/String;".equals(real)) {

  2062                             pb.append("Ljava/lang/String;");

  2063                             indx = column;

  2064                             continue;

  2065                         }

  2066                     }

  2067                     pb.append("Ljava/lang/Object;");

  2068                     indx = column;

  2069                 } else {

  2070                     pb.append(ch);

  2071                     indx++;

  2072                 }

  2073             }

  2074             srp = mangleSig(pb.toString());

  2075         }

  2076         final String rp = mangleSig(params);

  2077         final String mrp = mangleMethodName(rp);

  2078         sb.append(rfqn).append("$").append(rm).

  2079             append('$').append(mrp).append("__Ljava_lang_Object_2");

  2080         if (!isStatic) {

  2081             sb.append('L').append(fqnu).append("_2");

  2082         }

  2083         sb.append(srp);

  2084         return sb.toString();

  2085     }

  2087     private static String className(ClassData jc) {

  2088         //return jc.getName().getInternalName().replace('/', '_');

  2089         return mangleClassName(jc.getClassName());

  2090     }

  2092     private static String[] findAnnotation(

  2093         byte[] arr, ClassData cd, final String className,

  2094         final String... attrNames

  2095     ) throws IOException {

  2096         if (arr == null) {

  2097             return null;

  2098         }

  2099         final String[] values = new String[attrNames.length];

  2100         final boolean[] found = { false };

  2101         final String jvmType = "L" + className.replace('.', '/') + ";";

  2102         AnnotationParser ap = new AnnotationParser(false, true) {

  2103             @Override

  2104             protected void visitAttr(String type, String attr, String at, String value) {

  2105                 if (type.equals(jvmType)) {

  2106                     found[0] = true;

  2107                     for (int i = 0; i < attrNames.length; i++) {

  2108                         if (attrNames[i].equals(attr)) {

  2109                             values[i] = value;

  2110                         }

  2111                     }

  2112                 }

  2113             }

  2115         };

  2116         ap.parse(arr, cd);

  2117         return found[0] ? values : null;

  2118     }

  2120     private CharSequence initField(FieldData v) {

  2121         final String is = v.getInternalSig();

  2122         if (is.length() == 1) {

  2123             switch (is.charAt(0)) {

  2124                 case 'S':

  2125                 case 'J':

  2126                 case 'B':

  2127                 case 'Z':

  2128                 case 'C':

  2129                 case 'I': return " = 0;";

  2130                 case 'F':

  2131                 case 'D': return " = 0.0;";

  2132                 default:

  2133                     throw new IllegalStateException(is);

  2134             }

  2135         }

  2136         return " = null;";

  2137     }

  2139     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2140         AnnotationParser ap = new AnnotationParser(true, false) {

  2141             int[] cnt = new int[32];

  2142             int depth;

  2144             @Override

  2145             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2146                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2147                 requireReference(slashType);

  2149                 if (cnt[depth]++ > 0) {

  2150                     append(",");

  2151                 }

  2152                 if (top) {

  2153                     append('"').append(attrType).append("\" : ");

  2154                 }

  2155                 append("{\n");

  2156                 cnt[++depth] = 0;

  2157             }

  2159             @Override

  2160             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2161                 append("\n}\n");

  2162                 depth--;

  2163             }

  2165             @Override

  2166             protected void visitValueStart(String attrName, char type) throws IOException {

  2167                 if (cnt[depth]++ > 0) {

  2168                     append(",\n");

  2169                 }

  2170                 cnt[++depth] = 0;

  2171                 if (attrName != null) {

  2172                     append('"').append(attrName).append("\" : ");

  2173                 }

  2174                 if (type == '[') {

  2175                     append("[");

  2176                 }

  2177             }

  2179             @Override

  2180             protected void visitValueEnd(String attrName, char type) throws IOException {

  2181                 if (type == '[') {

  2182                     append("]");

  2183                 }

  2184                 depth--;

  2185             }

  2187             @Override

  2188             protected void visitAttr(String type, String attr, String attrType, String value)

  2189             throws IOException {

  2190                 if (attr == null && value == null) {

  2191                     return;

  2192                 }

  2193                 append(value);

  2194             }

  2196             @Override

  2197             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2198             throws IOException {

  2199                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2200                 requireReference(slashType);

  2202                 final String cn = mangleClassName(slashType);

  2203                 append(accessClassFalse(cn))

  2204                    .append("['valueOf__L").

  2205                     append(cn).

  2206                     append("_2Ljava_lang_String_2']('").

  2207                     append(value).

  2208                     append("')");

  2209             }

  2210         };

  2211         ap.parse(data, cd);

  2212     }

  2214     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2215         final String name = args[indx];

  2216         if (name == null) {

  2217             return "";

  2218         }

  2219         if (name.contains(",")) {

  2220             throw new IOException("Wrong parameter with ',': " + name);

  2221         }

  2222         out.append(name);

  2223         return ",";

  2224     }

  2226     final void emitNoFlush(

  2227         StackMapper sm,

  2228         final String format, final CharSequence... params

  2229     ) throws IOException {

  2230         emitImpl(this, format, params);

  2231     }

  2232     static final void emit(

  2233         StackMapper sm,

  2234         final Appendable out,

  2235         final String format, final CharSequence... params

  2236     ) throws IOException {

  2237         sm.flush(out);

  2238         emitImpl(out, format, params);

  2239     }

  2240     static void emitImpl(final Appendable out,

  2241                              final String format,

  2242                              final CharSequence... params) throws IOException {

  2243         final int length = format.length();

  2245         int processed = 0;

  2246         int paramOffset = format.indexOf('@');

  2247         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2248             final char paramChar = format.charAt(paramOffset + 1);

  2249             if ((paramChar >= '1') && (paramChar <= '9')) {

  2250                 final int paramIndex = paramChar - '0' - 1;

  2252                 out.append(format, processed, paramOffset);

  2253                 out.append(params[paramIndex]);

  2255                 ++paramOffset;

  2256                 processed = paramOffset + 1;

  2257             }

  2259             paramOffset = format.indexOf('@', paramOffset + 1);

  2260         }

  2262         out.append(format, processed, length);

  2263     }

  2265     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2266         append("} catch (e) {\n");

  2267         int finallyPC = -1;

  2268         for (TrapData e : traps) {

  2269             if (e == null) {

  2270                 break;

  2271             }

  2272             if (e.catch_cpx != 0) { //not finally

  2273                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2274                 addReference(classInternalName);

  2275                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2276                 append("if (e['$instOf_" + mangleClassName(classInternalName) + "']) {");

  2277                 append("var stA0 = e;");

  2278                 goTo(this, current, e.handler_pc, topMostLabel);

  2279                 append("}\n");

  2280             } else {

  2281                 finallyPC = e.handler_pc;

  2282             }

  2283         }

  2284         if (finallyPC == -1) {

  2285             append("throw e;");

  2286         } else {

  2287             append("var stA0 = e;");

  2288             goTo(this, current, finallyPC, topMostLabel);

  2289         }

  2290         append("\n}");

  2291     }

  2293     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2294         if (to < current) {

  2295             if (canBack < to) {

  2296                 out.append("{ gt = 0; continue X_" + to + "; }");

  2297             } else {

  2298                 out.append("{ gt = " + to + "; continue X_0; }");

  2299             }

  2300         } else {

  2301             out.append("{ gt = " + to + "; break IF; }");

  2302         }

  2303     }

  2305     private static void emitIf(

  2306         StackMapper sm,

  2307         Appendable out, String pattern,

  2308         CharSequence param,

  2309         int current, int to, int canBack

  2310     ) throws IOException {

  2311         sm.flush(out);

  2312         emitImpl(out, pattern, param);

  2313         goTo(out, current, to, canBack);

  2314     }

  2316     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2317         String jvmType;

  2318         switch (atype) {

  2319             case 4: jvmType = "[Z"; break;

  2320             case 5: jvmType = "[C"; break;

  2321             case 6: jvmType = "[F"; break;

  2322             case 7: jvmType = "[D"; break;

  2323             case 8: jvmType = "[B"; break;

  2324             case 9: jvmType = "[S"; break;

  2325             case 10: jvmType = "[I"; break;

  2326             case 11: jvmType = "[J"; break;

  2327             default: throw new IllegalStateException("Array type: " + atype);

  2328         }

  2329         emit(smapper, this,

  2330             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2331              smapper.popI(), smapper.pushA(), jvmType);

  2332     }

  2334     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2335         String typeName = jc.getClassName(type);

  2336         String ref = "null";

  2337         if (typeName.startsWith("[")) {

  2338             typeName = "'[" + typeName + "'";

  2339         } else {

  2340             ref = "vm." + mangleClassName(typeName);

  2341             typeName = "'[L" + typeName + ";'";

  2342         }

  2343         emit(smapper, this,

  2344             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2345              smapper.popI(), smapper.pushA(), typeName, ref);

  2346     }

  2348     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2349         String typeName = jc.getClassName(type);

  2350         int dim = readUByte(byteCodes, ++i);

  2351         StringBuilder dims = new StringBuilder();

  2352         dims.append('[');

  2353         for (int d = 0; d < dim; d++) {

  2354             if (d != 0) {

  2355                 dims.insert(1, ",");

  2356             }

  2357             dims.insert(1, smapper.popI());

  2358         }

  2359         dims.append(']');

  2360         String fn = "null";

  2361         if (typeName.charAt(dim) == 'L') {

  2362             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2363         }

  2364         emit(smapper, this,

  2365             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2366              dims.toString(), smapper.pushA(), typeName, fn

  2367         );

  2368         return i;

  2369     }

  2371     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2372         int table = i / 4 * 4 + 4;

  2373         int dflt = i + readInt4(byteCodes, table);

  2374         table += 4;

  2375         int low = readInt4(byteCodes, table);

  2376         table += 4;

  2377         int high = readInt4(byteCodes, table);

  2378         table += 4;

  2379         final CharSequence swVar = smapper.popValue();

  2380         smapper.flush(this);

  2381         append("switch (").append(swVar).append(") {\n");

  2382         while (low <= high) {

  2383             int offset = i + readInt4(byteCodes, table);

  2384             table += 4;

  2385             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2386             low++;

  2387         }

  2388         append("  default: ");

  2389         goTo(this, i, dflt, topMostLabel);

  2390         append("\n}");

  2391         i = table - 1;

  2392         return i;

  2393     }

  2395     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2396         int table = i / 4 * 4 + 4;

  2397         int dflt = i + readInt4(byteCodes, table);

  2398         table += 4;

  2399         int n = readInt4(byteCodes, table);

  2400         table += 4;

  2401         final CharSequence swVar = smapper.popValue();

  2402         smapper.flush(this);

  2403         append("switch (").append(swVar).append(") {\n");

  2404         while (n-- > 0) {

  2405             int cnstnt = readInt4(byteCodes, table);

  2406             table += 4;

  2407             int offset = i + readInt4(byteCodes, table);

  2408             table += 4;

  2409             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2410         }

  2411         append("  default: ");

  2412         goTo(this, i, dflt, topMostLabel);

  2413         append("\n}");

  2414         i = table - 1;

  2415         return i;

  2416     }

  2418     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2419         String type = jc.getClassName(indx);

  2420         if (!type.startsWith("[")) {

  2421             emit(smapper, this,

  2422                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2423                  smapper.popA(), smapper.pushI(),

  2424                  mangleClassName(type));

  2425         } else {

  2426             int cnt = 0;

  2427             while (type.charAt(cnt) == '[') {

  2428                 cnt++;

  2429             }

  2430             if (type.charAt(cnt) == 'L') {

  2431                 String component = type.substring(cnt + 1, type.length() - 1);

  2432                 requireReference(component);

  2433                 type = "vm." + mangleClassName(component);

  2434                 emit(smapper, this,

  2435                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2436                     smapper.popA(), smapper.pushI(),

  2437                     type, "" + cnt

  2438                 );

  2439             } else {

  2440                 emit(smapper, this,

  2441                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2442                     smapper.popA(), smapper.pushI(), type

  2443                 );

  2444             }

  2445         }

  2446     }

  2448     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2449         String type = jc.getClassName(indx);

  2450         if (!type.startsWith("[")) {

  2451             emitNoFlush(smapper,

  2452                  "if (@1 !== null && !@1['$instOf_@2']) vm.java_lang_Class(false).castEx();",

  2453                  smapper.getT(0, VarType.REFERENCE, false), mangleClassName(type));

  2454         } else {

  2455             int cnt = 0;

  2456             while (type.charAt(cnt) == '[') {

  2457                 cnt++;

  2458             }

  2459             if (type.charAt(cnt) == 'L') {

  2460                 String component = type.substring(cnt + 1, type.length() - 1);

  2461                 requireReference(component);

  2462                 type = "vm." + mangleClassName(component);

  2463                 emitNoFlush(smapper,

  2464                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) vm.java_lang_Class(false).castEx();",

  2465                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2466                 );

  2467             } else {

  2468                 emitNoFlush(smapper,

  2469                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) vm.java_lang_Class(false).castEx();",

  2470                      smapper.getT(0, VarType.REFERENCE, false), type

  2471                 );

  2472             }

  2473         }

  2474     }

  2476     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2477         for (int j = prev; j <= i; j++) {

  2478             append(" ");

  2479             final int cc = readUByte(byteCodes, j);

  2480             append(Integer.toString(cc));

  2481         }

  2482     }

  2484     @JavaScriptBody(args = "msg", body = "")

  2485     private static void println(String msg) {

  2486         System.err.println(msg);

  2487     }

  2488 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 24 Jan 2016 17:00:17 +0100
branch	FasterSieve
changeset 1951	3781fd782472
parent 1950	71e5cd5b29bc
permissions	-rw-r--r--