hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@b0b23e5ebf9d

     1 /**

     2  * Back 2 Browser Bytecode Translator

     3  * Copyright (C) 2012 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 static org.apidesign.vm4brwsr.ByteCodeParser.*;

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

    25  *

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

    27  */

    28 abstract class ByteCodeToJavaScript {

    29     private ClassData jc;

    30     final Appendable out;

    32     protected ByteCodeToJavaScript(Appendable out) {

    33         this.out = out;

    34     }

    36     /* Collects additional required resources.

    37      *

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

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

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

    41      */

    42     protected abstract boolean requireReference(String internalClassName);

    44     /*

    45      * @param resourcePath name of resources to read

    46      */

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

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

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

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

    52      *

    53      * @param className suggested name of the class

    54      */

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

    56         return className + " = ";

    57     }

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

    59         return classOperation;

    60     }

    62     /** Prints out a debug message.

    63      *

    64      * @param msg the message

    65      * @return true if the message has been printed

    66      * @throws IOException

    67      */

    68     boolean debug(String msg) throws IOException {

    69         out.append(msg);

    70         return true;

    71     }

    73     /**

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

    75      *

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

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

    78      *

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

    80      */

    82     public String compile(InputStream classFile) throws IOException {

    83         this.jc = new ClassData(classFile);

    84         if (jc.getMajor_version() < 50) {

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

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

    87             );

    88         }

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

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

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

    92             "resource", "processByteCode"

    93         );

    94         if (arr != null) {

    95             requireScript(arr[0]);

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

    97                 return null;

    98             }

    99         }

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

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

   102             "container", "prototype"

   103         );

   104         StringArray toInitilize = new StringArray();

   105         final String className = className(jc);

   106         out.append("\n\n").append(assignClass(className));

   107         out.append("function CLS() {");

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

   109         if (proto == null) {

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

   111             out.append("\n    var pp = ").

   112                 append(accessClass(sc.replace('/', '_'))).append("(true);");

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

   114             out.append("\n    var c = p;");

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

   116         } else {

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

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

   119                 proto[0] = "p";

   120             }

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

   122             out.append("\n    var sprcls = null;");

   123         }

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

   125             if (v.isStatic()) {

   126                 out.append("\n  CLS.").append(v.getName()).append(initField(v));

   127                 out.append("\n  c._").append(v.getName()).append(" = function (v) {")

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

   129                    .append(" = v; return CLS.").

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

   131             } else {

   132                 out.append("\n  c._").append(v.getName()).append(" = function (v) {")

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

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

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

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

   137                    .append("; };");

   138             }

   139         }

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

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

   142             String[] only = findAnnotation(onlyArr, jc,

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

   144                 "name", "value"

   145             );

   146             if (only != null) {

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

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

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

   150                 }

   151                 continue;

   152             }

   153             String prefix;

   154             String mn;

   155             if (m.isStatic()) {

   156                 prefix = "\n    c.";

   157                 mn = generateStaticMethod(prefix, m, toInitilize);

   158             } else {

   159                 if (m.isConstructor()) {

   160                     prefix = "\n    CLS.";

   161                     mn = generateInstanceMethod(prefix, m);

   162                 } else {

   163                     prefix = "\n    c.";

   164                     mn = generateInstanceMethod(prefix, m);

   165                 }

   166             }

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

   168             if (runAnno != null) {

   169                 out.append(prefix).append(mn).append(".anno = {");

   170                 generateAnno(jc, out, runAnno);

   171                 out.append("\n    };");

   172             }

   173             out.append(prefix).append(mn).append(".access = " + m.getAccess()).append(";");

   174             out.append(prefix).append(mn).append(".cls = CLS;");

   175         }

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

   177         out.append("\n    c.$instOf_").append(className).append(" = true;");

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

   179             out.append("\n    c.$instOf_").append(superInterface.replace('/', '_')).append(" = true;");

   180         }

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

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

   183         out.append(accessClass("java_lang_Class(true);"));

   184         out.append("\n    CLS.$class.jvmName = '").append(jc.getClassName()).append("';");

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

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

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

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

   189         if (classAnno != null) {

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

   191             generateAnno(jc, out, classAnno);

   192             out.append("\n    };");

   193         }

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

   195             out.append("\n    ").append(init).append("();");

   196         }

   197         out.append("\n  }");

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

   199         out.append("\n    if (!(this instanceof CLS)) {");

   200         out.append("\n      return new CLS();");

   201         out.append("\n    }");

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

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

   204             String[] only = findAnnotation(onlyArr, jc,

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

   206                 "name", "value"

   207             );

   208             if (only != null) {

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

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

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

   212                 }

   213                 continue;

   214             }

   215             if (!v.isStatic()) {

   216                 out.append("\n    this.fld_").

   217                     append(className).append('_').

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

   219             }

   220         }

   221         out.append("\n    return this;");

   222         out.append("\n  }");

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

   224         out.append("\n};");

   225 //        StringBuilder sb = new StringBuilder();

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

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

   228 //        }

   229         return "";

   230     }

   231     private String generateStaticMethod(String prefix, MethodData m, StringArray toInitilize) throws IOException {

   232         String jsb = javaScriptBody(prefix, m, true);

   233         if (jsb != null) {

   234             return jsb;

   235         }

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

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

   238             toInitilize.add(accessClass(className(jc)) + "(false)." + mn);

   239         }

   240         generateMethod(prefix, mn, m);

   241         return mn;

   242     }

   244     private String generateInstanceMethod(String prefix, MethodData m) throws IOException {

   245         String jsb = javaScriptBody(prefix, m, false);

   246         if (jsb != null) {

   247             return jsb;

   248         }

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

   250         generateMethod(prefix, mn, m);

   251         return mn;

   252     }

   254     private void generateMethod(String prefix, String name, MethodData m)

   255             throws IOException {

   256         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   257         TrapDataIterator trap = m.getTrapDataIterator();

   258         final LocalsMapper lmapper =

   259                 new LocalsMapper(stackMapIterator.getArguments());

   261         out.append(prefix).append(name).append(" = function(");

   262         lmapper.outputArguments(out, m.isStatic());

   263         out.append(") {").append("\n");

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

   266         if (byteCodes == null) {

   267             out.append("  throw 'no code found for ")

   268                .append(jc.getClassName()).append('.')

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

   270             out.append("};");

   271             return;

   272         }

   274         final StackMapper smapper = new StackMapper();

   276         if (!m.isStatic()) {

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

   278         }

   280         int lastStackFrame = -1;

   281         TrapData[] previousTrap = null;

   282         boolean wide = false;

   284         out.append("\n  var gt = 0;\n  for(;;) switch(gt) {\n");

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

   286             int prev = i;

   287             stackMapIterator.advanceTo(i);

   288             boolean changeInCatch = trap.advanceTo(i);

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

   290                 if (previousTrap != null) {

   291                     generateCatch(previousTrap);

   292                     previousTrap = null;

   293                 }

   294             }

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

   296                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

   299                 out.append("    case " + i).append(": ");

   300                 changeInCatch = true;

   301             } else {

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

   303             }

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

   305                 out.append("try {");

   306                 previousTrap = trap.current();

   307             }

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

   309             switch (c) {

   310                 case opc_aload_0:

   311                     emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(0));

   312                     break;

   313                 case opc_iload_0:

   314                     emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(0));

   315                     break;

   316                 case opc_lload_0:

   317                     emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(0));

   318                     break;

   319                 case opc_fload_0:

   320                     emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(0));

   321                     break;

   322                 case opc_dload_0:

   323                     emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(0));

   324                     break;

   325                 case opc_aload_1:

   326                     emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(1));

   327                     break;

   328                 case opc_iload_1:

   329                     emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(1));

   330                     break;

   331                 case opc_lload_1:

   332                     emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(1));

   333                     break;

   334                 case opc_fload_1:

   335                     emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(1));

   336                     break;

   337                 case opc_dload_1:

   338                     emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(1));

   339                     break;

   340                 case opc_aload_2:

   341                     emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(2));

   342                     break;

   343                 case opc_iload_2:

   344                     emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(2));

   345                     break;

   346                 case opc_lload_2:

   347                     emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(2));

   348                     break;

   349                 case opc_fload_2:

   350                     emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(2));

   351                     break;

   352                 case opc_dload_2:

   353                     emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(2));

   354                     break;

   355                 case opc_aload_3:

   356                     emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(3));

   357                     break;

   358                 case opc_iload_3:

   359                     emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(3));

   360                     break;

   361                 case opc_lload_3:

   362                     emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(3));

   363                     break;

   364                 case opc_fload_3:

   365                     emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(3));

   366                     break;

   367                 case opc_dload_3:

   368                     emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(3));

   369                     break;

   370                 case opc_iload: {

   371                     ++i;

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

   373                                           : readUByte(byteCodes, i);

   374                     wide = false;

   375                     emit(out, "var @1 = @2;",

   376                          smapper.pushI(), lmapper.getI(indx));

   377                     break;

   378                 }

   379                 case opc_lload: {

   380                     ++i;

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

   382                                           : readUByte(byteCodes, i);

   383                     wide = false;

   384                     emit(out, "var @1 = @2;",

   385                          smapper.pushL(), lmapper.getL(indx));

   386                     break;

   387                 }

   388                 case opc_fload: {

   389                     ++i;

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

   391                                           : readUByte(byteCodes, i);

   392                     wide = false;

   393                     emit(out, "var @1 = @2;",

   394                          smapper.pushF(), lmapper.getF(indx));

   395                     break;

   396                 }

   397                 case opc_dload: {

   398                     ++i;

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

   400                                           : readUByte(byteCodes, i);

   401                     wide = false;

   402                     emit(out, "var @1 = @2;",

   403                          smapper.pushD(), lmapper.getD(indx));

   404                     break;

   405                 }

   406                 case opc_aload: {

   407                     ++i;

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

   409                                           : readUByte(byteCodes, i);

   410                     wide = false;

   411                     emit(out, "var @1 = @2;",

   412                          smapper.pushA(), lmapper.getA(indx));

   413                     break;

   414                 }

   415                 case opc_istore: {

   416                     ++i;

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

   418                                           : readUByte(byteCodes, i);

   419                     wide = false;

   420                     emit(out, "var @1 = @2;",

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

   422                     break;

   423                 }

   424                 case opc_lstore: {

   425                     ++i;

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

   427                                           : readUByte(byteCodes, i);

   428                     wide = false;

   429                     emit(out, "var @1 = @2;",

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

   431                     break;

   432                 }

   433                 case opc_fstore: {

   434                     ++i;

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

   436                                           : readUByte(byteCodes, i);

   437                     wide = false;

   438                     emit(out, "var @1 = @2;",

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

   440                     break;

   441                 }

   442                 case opc_dstore: {

   443                     ++i;

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

   445                                           : readUByte(byteCodes, i);

   446                     wide = false;

   447                     emit(out, "var @1 = @2;",

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

   449                     break;

   450                 }

   451                 case opc_astore: {

   452                     ++i;

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

   454                                           : readUByte(byteCodes, i);

   455                     wide = false;

   456                     emit(out, "var @1 = @2;",

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

   458                     break;

   459                 }

   460                 case opc_astore_0:

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

   462                     break;

   463                 case opc_istore_0:

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

   465                     break;

   466                 case opc_lstore_0:

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

   468                     break;

   469                 case opc_fstore_0:

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

   471                     break;

   472                 case opc_dstore_0:

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

   474                     break;

   475                 case opc_astore_1:

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

   477                     break;

   478                 case opc_istore_1:

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

   480                     break;

   481                 case opc_lstore_1:

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

   483                     break;

   484                 case opc_fstore_1:

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

   486                     break;

   487                 case opc_dstore_1:

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

   489                     break;

   490                 case opc_astore_2:

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

   492                     break;

   493                 case opc_istore_2:

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

   495                     break;

   496                 case opc_lstore_2:

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

   498                     break;

   499                 case opc_fstore_2:

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

   501                     break;

   502                 case opc_dstore_2:

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

   504                     break;

   505                 case opc_astore_3:

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

   507                     break;

   508                 case opc_istore_3:

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

   510                     break;

   511                 case opc_lstore_3:

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

   513                     break;

   514                 case opc_fstore_3:

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

   516                     break;

   517                 case opc_dstore_3:

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

   519                     break;

   520                 case opc_iadd:

   521                     emit(out, "@1 = @1.add32(@2);", smapper.getI(1), smapper.popI());

   522                     break;

   523                 case opc_ladd:

   524                     emit(out, "@1 = @1.add64(@2);", smapper.getL(1), smapper.popL());

   525                     break;

   526                 case opc_fadd:

   527                     emit(out, "@1 += @2;", smapper.getF(1), smapper.popF());

   528                     break;

   529                 case opc_dadd:

   530                     emit(out, "@1 += @2;", smapper.getD(1), smapper.popD());

   531                     break;

   532                 case opc_isub:

   533                     emit(out, "@1 = @1.sub32(@2);", smapper.getI(1), smapper.popI());

   534                     break;

   535                 case opc_lsub:

   536                     emit(out, "@1 = @1.sub64(@2);", smapper.getL(1), smapper.popL());

   537                     break;

   538                 case opc_fsub:

   539                     emit(out, "@1 -= @2;", smapper.getF(1), smapper.popF());

   540                     break;

   541                 case opc_dsub:

   542                     emit(out, "@1 -= @2;", smapper.getD(1), smapper.popD());

   543                     break;

   544                 case opc_imul:

   545                     emit(out, "@1 = @1.mul32(@2);", smapper.getI(1), smapper.popI());

   546                     break;

   547                 case opc_lmul:

   548                     emit(out, "@1 = @1.mul64(@2);", smapper.getL(1), smapper.popL());

   549                     break;

   550                 case opc_fmul:

   551                     emit(out, "@1 *= @2;", smapper.getF(1), smapper.popF());

   552                     break;

   553                 case opc_dmul:

   554                     emit(out, "@1 *= @2;", smapper.getD(1), smapper.popD());

   555                     break;

   556                 case opc_idiv:

   557                     emit(out, "@1 = @1.div32(@2);",

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

   559                     break;

   560                 case opc_ldiv:

   561                     emit(out, "@1 = @1.div64(@2);",

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

   563                     break;

   564                 case opc_fdiv:

   565                     emit(out, "@1 /= @2;", smapper.getF(1), smapper.popF());

   566                     break;

   567                 case opc_ddiv:

   568                     emit(out, "@1 /= @2;", smapper.getD(1), smapper.popD());

   569                     break;

   570                 case opc_irem:

   571                     emit(out, "@1 = @1.mod32(@2);",

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

   573                     break;

   574                 case opc_lrem:

   575                     emit(out, "@1 = @1.mod64(@2);",

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

   577                     break;

   578                 case opc_frem:

   579                     emit(out, "@1 %= @2;", smapper.getF(1), smapper.popF());

   580                     break;

   581                 case opc_drem:

   582                     emit(out, "@1 %= @2;", smapper.getD(1), smapper.popD());

   583                     break;

   584                 case opc_iand:

   585                     emit(out, "@1 &= @2;", smapper.getI(1), smapper.popI());

   586                     break;

   587                 case opc_land:

   588                     emit(out, "@1 = @1.and64(@2);", smapper.getL(1), smapper.popL());

   589                     break;

   590                 case opc_ior:

   591                     emit(out, "@1 |= @2;", smapper.getI(1), smapper.popI());

   592                     break;

   593                 case opc_lor:

   594                     emit(out, "@1 = @1.or64(@2);", smapper.getL(1), smapper.popL());

   595                     break;

   596                 case opc_ixor:

   597                     emit(out, "@1 ^= @2;", smapper.getI(1), smapper.popI());

   598                     break;

   599                 case opc_lxor:

   600                     emit(out, "@1 = @1.xor64(@2);", smapper.getL(1), smapper.popL());

   601                     break;

   602                 case opc_ineg:

   603                     emit(out, "@1 = @1.neg32();", smapper.getI(0));

   604                     break;

   605                 case opc_lneg:

   606                     emit(out, "@1 = @1.neg64();", smapper.getL(0));

   607                     break;

   608                 case opc_fneg:

   609                     emit(out, "@1 = -@1;", smapper.getF(0));

   610                     break;

   611                 case opc_dneg:

   612                     emit(out, "@1 = -@1;", smapper.getD(0));

   613                     break;

   614                 case opc_ishl:

   615                     emit(out, "@1 <<= @2;", smapper.getI(1), smapper.popI());

   616                     break;

   617                 case opc_lshl:

   618                     emit(out, "@1 = @1.shl64(@2);", smapper.getL(1), smapper.popI());

   619                     break;

   620                 case opc_ishr:

   621                     emit(out, "@1 >>= @2;", smapper.getI(1), smapper.popI());

   622                     break;

   623                 case opc_lshr:

   624                     emit(out, "@1 = @1.shr64(@2);", smapper.getL(1), smapper.popI());

   625                     break;

   626                 case opc_iushr:

   627                     emit(out, "@1 >>>= @2;", smapper.getI(1), smapper.popI());

   628                     break;

   629                 case opc_lushr:

   630                     emit(out, "@1 = @1.ushr64(@2);", smapper.getL(1), smapper.popI());

   631                     break;

   632                 case opc_iinc: {

   633                     ++i;

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

   635                                              : readUByte(byteCodes, i);

   636                     ++i;

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

   638                                             : byteCodes[i];

   639                     wide = false;

   640                     if (incrBy == 1) {

   641                         emit(out, "@1++;", lmapper.getI(varIndx));

   642                     } else {

   643                         emit(out, "@1 += @2;",

   644                              lmapper.getI(varIndx),

   645                              Integer.toString(incrBy));

   646                     }

   647                     break;

   648                 }

   649                 case opc_return:

   650                     emit(out, "return;");

   651                     break;

   652                 case opc_ireturn:

   653                     emit(out, "return @1;", smapper.popI());

   654                     break;

   655                 case opc_lreturn:

   656                     emit(out, "return @1;", smapper.popL());

   657                     break;

   658                 case opc_freturn:

   659                     emit(out, "return @1;", smapper.popF());

   660                     break;

   661                 case opc_dreturn:

   662                     emit(out, "return @1;", smapper.popD());

   663                     break;

   664                 case opc_areturn:

   665                     emit(out, "return @1;", smapper.popA());

   666                     break;

   667                 case opc_i2l:

   668                     emit(out, "var @2 = @1;", smapper.popI(), smapper.pushL());

   669                     break;

   670                 case opc_i2f:

   671                     emit(out, "var @2 = @1;", smapper.popI(), smapper.pushF());

   672                     break;

   673                 case opc_i2d:

   674                     emit(out, "var @2 = @1;", smapper.popI(), smapper.pushD());

   675                     break;

   676                 case opc_l2i:

   677                     emit(out, "var @2 = @1.toInt32();", smapper.popL(), smapper.pushI());

   678                     break;

   679                     // max int check?

   680                 case opc_l2f:

   681                     emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushF());

   682                     break;

   683                 case opc_l2d:

   684                     emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushD());

   685                     break;

   686                 case opc_f2d:

   687                     emit(out, "var @2 = @1;", smapper.popF(), smapper.pushD());

   688                     break;

   689                 case opc_d2f:

   690                     emit(out, "var @2 = @1;", smapper.popD(), smapper.pushF());

   691                     break;

   692                 case opc_f2i:

   693                     emit(out, "var @2 = @1.toInt32();",

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

   695                     break;

   696                 case opc_f2l:

   697                     emit(out, "var @2 = @1.toLong();",

   698                          smapper.popF(), smapper.pushL());

   699                     break;

   700                 case opc_d2i:

   701                     emit(out, "var @2 = @1.toInt32();",

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

   703                     break;

   704                 case opc_d2l:

   705                     emit(out, "var @2 = @1.toLong();",

   706                          smapper.popD(), smapper.pushL());

   707                     break;

   708                 case opc_i2b:

   709                     emit(out, "var @1 = @1.toInt8();", smapper.getI(0));

   710                     break;

   711                 case opc_i2c:

   712                     out.append("{ /* number conversion */ }");

   713                     break;

   714                 case opc_i2s:

   715                     emit(out, "var @1 = @1.toInt16();", smapper.getI(0));

   716                     break;

   717                 case opc_aconst_null:

   718                     emit(out, "var @1 = null;", smapper.pushA());

   719                     break;

   720                 case opc_iconst_m1:

   721                     emit(out, "var @1 = -1;", smapper.pushI());

   722                     break;

   723                 case opc_iconst_0:

   724                     emit(out, "var @1 = 0;", smapper.pushI());

   725                     break;

   726                 case opc_dconst_0:

   727                     emit(out, "var @1 = 0;", smapper.pushD());

   728                     break;

   729                 case opc_lconst_0:

   730                     emit(out, "var @1 = 0;", smapper.pushL());

   731                     break;

   732                 case opc_fconst_0:

   733                     emit(out, "var @1 = 0;", smapper.pushF());

   734                     break;

   735                 case opc_iconst_1:

   736                     emit(out, "var @1 = 1;", smapper.pushI());

   737                     break;

   738                 case opc_lconst_1:

   739                     emit(out, "var @1 = 1;", smapper.pushL());

   740                     break;

   741                 case opc_fconst_1:

   742                     emit(out, "var @1 = 1;", smapper.pushF());

   743                     break;

   744                 case opc_dconst_1:

   745                     emit(out, "var @1 = 1;", smapper.pushD());

   746                     break;

   747                 case opc_iconst_2:

   748                     emit(out, "var @1 = 2;", smapper.pushI());

   749                     break;

   750                 case opc_fconst_2:

   751                     emit(out, "var @1 = 2;", smapper.pushF());

   752                     break;

   753                 case opc_iconst_3:

   754                     emit(out, "var @1 = 3;", smapper.pushI());

   755                     break;

   756                 case opc_iconst_4:

   757                     emit(out, "var @1 = 4;", smapper.pushI());

   758                     break;

   759                 case opc_iconst_5:

   760                     emit(out, "var @1 = 5;", smapper.pushI());

   761                     break;

   762                 case opc_ldc: {

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

   764                     String v = encodeConstant(indx);

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

   766                     emit(out, "var @1 = @2;", smapper.pushT(type), v);

   767                     break;

   768                 }

   769                 case opc_ldc_w:

   770                 case opc_ldc2_w: {

   771                     int indx = readIntArg(byteCodes, i);

   772                     i += 2;

   773                     String v = encodeConstant(indx);

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

   775                     if (type == VarType.LONG) {

   776                         final Long lv = new Long(v);

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

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

   779                         emit(out, "var @1 = 0x@3.next32(0x@2);", smapper.pushL(),

   780                                 Integer.toHexString(low), Integer.toHexString(hi));

   781                     } else {

   782                         emit(out, "var @1 = @2;", smapper.pushT(type), v);

   783                     }

   784                     break;

   785                 }

   786                 case opc_lcmp:

   787                     emit(out, "var @3 = @2.compare64(@1);",

   788                          smapper.popL(), smapper.popL(), smapper.pushI());

   789                     break;

   790                 case opc_fcmpl:

   791                 case opc_fcmpg:

   792                     emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

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

   794                     break;

   795                 case opc_dcmpl:

   796                 case opc_dcmpg:

   797                     emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

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

   799                     break;

   800                 case opc_if_acmpeq:

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

   802                                    "===");

   803                     break;

   804                 case opc_if_acmpne:

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

   806                                    "!==");

   807                     break;

   808                 case opc_if_icmpeq:

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

   810                                    "==");

   811                     break;

   812                 case opc_ifeq: {

   813                     int indx = i + readIntArg(byteCodes, i);

   814                     emit(out, "if (@1 == 0) { gt = @2; continue; }",

   815                          smapper.popI(), Integer.toString(indx));

   816                     i += 2;

   817                     break;

   818                 }

   819                 case opc_ifne: {

   820                     int indx = i + readIntArg(byteCodes, i);

   821                     emit(out, "if (@1 != 0) { gt = @2; continue; }",

   822                          smapper.popI(), Integer.toString(indx));

   823                     i += 2;

   824                     break;

   825                 }

   826                 case opc_iflt: {

   827                     int indx = i + readIntArg(byteCodes, i);

   828                     emit(out, "if (@1 < 0) { gt = @2; continue; }",

   829                          smapper.popI(), Integer.toString(indx));

   830                     i += 2;

   831                     break;

   832                 }

   833                 case opc_ifle: {

   834                     int indx = i + readIntArg(byteCodes, i);

   835                     emit(out, "if (@1 <= 0) { gt = @2; continue; }",

   836                          smapper.popI(), Integer.toString(indx));

   837                     i += 2;

   838                     break;

   839                 }

   840                 case opc_ifgt: {

   841                     int indx = i + readIntArg(byteCodes, i);

   842                     emit(out, "if (@1 > 0) { gt = @2; continue; }",

   843                          smapper.popI(), Integer.toString(indx));

   844                     i += 2;

   845                     break;

   846                 }

   847                 case opc_ifge: {

   848                     int indx = i + readIntArg(byteCodes, i);

   849                     emit(out, "if (@1 >= 0) { gt = @2; continue; }",

   850                          smapper.popI(), Integer.toString(indx));

   851                     i += 2;

   852                     break;

   853                 }

   854                 case opc_ifnonnull: {

   855                     int indx = i + readIntArg(byteCodes, i);

   856                     emit(out, "if (@1 !== null) { gt = @2; continue; }",

   857                          smapper.popA(), Integer.toString(indx));

   858                     i += 2;

   859                     break;

   860                 }

   861                 case opc_ifnull: {

   862                     int indx = i + readIntArg(byteCodes, i);

   863                     emit(out, "if (@1 === null) { gt = @2; continue; }",

   864                          smapper.popA(), Integer.toString(indx));

   865                     i += 2;

   866                     break;

   867                 }

   868                 case opc_if_icmpne:

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

   870                                    "!=");

   871                     break;

   872                 case opc_if_icmplt:

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

   874                                    "<");

   875                     break;

   876                 case opc_if_icmple:

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

   878                                    "<=");

   879                     break;

   880                 case opc_if_icmpgt:

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

   882                                    ">");

   883                     break;

   884                 case opc_if_icmpge:

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

   886                                    ">=");

   887                     break;

   888                 case opc_goto: {

   889                     int indx = i + readIntArg(byteCodes, i);

   890                     emit(out, "gt = @1; continue;", Integer.toString(indx));

   891                     i += 2;

   892                     break;

   893                 }

   894                 case opc_lookupswitch: {

   895                     int table = i / 4 * 4 + 4;

   896                     int dflt = i + readInt4(byteCodes, table);

   897                     table += 4;

   898                     int n = readInt4(byteCodes, table);

   899                     table += 4;

   900                     out.append("switch (").append(smapper.popI()).append(") {\n");

   901                     while (n-- > 0) {

   902                         int cnstnt = readInt4(byteCodes, table);

   903                         table += 4;

   904                         int offset = i + readInt4(byteCodes, table);

   905                         table += 4;

   906                         out.append("  case " + cnstnt).append(": gt = " + offset).append("; continue;\n");

   907                     }

   908                     out.append("  default: gt = " + dflt).append("; continue;\n}");

   909                     i = table - 1;

   910                     break;

   911                 }

   912                 case opc_tableswitch: {

   913                     int table = i / 4 * 4 + 4;

   914                     int dflt = i + readInt4(byteCodes, table);

   915                     table += 4;

   916                     int low = readInt4(byteCodes, table);

   917                     table += 4;

   918                     int high = readInt4(byteCodes, table);

   919                     table += 4;

   920                     out.append("switch (").append(smapper.popI()).append(") {\n");

   921                     while (low <= high) {

   922                         int offset = i + readInt4(byteCodes, table);

   923                         table += 4;

   924                         out.append("  case " + low).append(": gt = " + offset).append("; continue;\n");

   925                         low++;

   926                     }

   927                     out.append("  default: gt = " + dflt).append("; continue;\n}");

   928                     i = table - 1;

   929                     break;

   930                 }

   931                 case opc_invokeinterface: {

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

   933                     break;

   934                 }

   935                 case opc_invokevirtual:

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

   937                     break;

   938                 case opc_invokespecial:

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

   940                     break;

   941                 case opc_invokestatic:

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

   943                     break;

   944                 case opc_new: {

   945                     int indx = readIntArg(byteCodes, i);

   946                     String ci = jc.getClassName(indx);

   947                     emit(out, "var @1 = new @2;",

   948                          smapper.pushA(), accessClass(ci.replace('/', '_')));

   949                     addReference(ci);

   950                     i += 2;

   951                     break;

   952                 }

   953                 case opc_newarray:

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

   955                     String jvmType;

   956                     switch (atype) {

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

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

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

   960                         case 7: jvmType = "[D"; break;

   961                         case 8: jvmType = "[B"; break;

   962                         case 9: jvmType = "[S"; break;

   963                         case 10: jvmType = "[I"; break;

   964                         case 11: jvmType = "[J"; break;

   965                         default: throw new IllegalStateException("Array type: " + atype);

   966                     }

   967                     emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

   968                          smapper.popI(), smapper.pushA(), jvmType);

   969                     break;

   970                 case opc_anewarray: {

   971                     int type = readIntArg(byteCodes, i);

   972                     i += 2;

   973                     String typeName = jc.getClassName(type);

   974                     if (typeName.startsWith("[")) {

   975                         typeName = "[" + typeName;

   976                     } else {

   977                         typeName = "[L" + typeName + ";";

   978                     }

   979                     emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

   980                          smapper.popI(), smapper.pushA(), typeName);

   981                     break;

   982                 }

   983                 case opc_multianewarray: {

   984                     int type = readIntArg(byteCodes, i);

   985                     i += 2;

   986                     String typeName = jc.getClassName(type);

   987                     int dim = readUByte(byteCodes, ++i);

   988                     StringBuilder dims = new StringBuilder();

   989                     dims.append('[');

   990                     for (int d = 0; d < dim; d++) {

   991                         if (d != 0) {

   992                             dims.insert(1, ",");

   993                         }

   994                         dims.insert(1, smapper.popI());

   995                     }

   996                     dims.append(']');

   997                     emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

   998                          dims.toString(), smapper.pushA(), typeName);

   999                     break;

  1000                 }

  1001                 case opc_arraylength:

  1002                     emit(out, "var @2 = @1.length;",

  1003                          smapper.popA(), smapper.pushI());

  1004                     break;

  1005                 case opc_lastore:

  1006                     emit(out, "@3.at(@2, @1);",

  1007                          smapper.popL(), smapper.popI(), smapper.popA());

  1008                     break;

  1009                 case opc_fastore:

  1010                     emit(out, "@3.at(@2, @1);",

  1011                          smapper.popF(), smapper.popI(), smapper.popA());

  1012                     break;

  1013                 case opc_dastore:

  1014                     emit(out, "@3.at(@2, @1);",

  1015                          smapper.popD(), smapper.popI(), smapper.popA());

  1016                     break;

  1017                 case opc_aastore:

  1018                     emit(out, "@3.at(@2, @1);",

  1019                          smapper.popA(), smapper.popI(), smapper.popA());

  1020                     break;

  1021                 case opc_iastore:

  1022                 case opc_bastore:

  1023                 case opc_castore:

  1024                 case opc_sastore:

  1025                     emit(out, "@3.at(@2, @1);",

  1026                          smapper.popI(), smapper.popI(), smapper.popA());

  1027                     break;

  1028                 case opc_laload:

  1029                     emit(out, "var @3 = @2.at(@1);",

  1030                          smapper.popI(), smapper.popA(), smapper.pushL());

  1031                     break;

  1032                 case opc_faload:

  1033                     emit(out, "var @3 = @2.at(@1);",

  1034                          smapper.popI(), smapper.popA(), smapper.pushF());

  1035                     break;

  1036                 case opc_daload:

  1037                     emit(out, "var @3 = @2.at(@1);",

  1038                          smapper.popI(), smapper.popA(), smapper.pushD());

  1039                     break;

  1040                 case opc_aaload:

  1041                     emit(out, "var @3 = @2.at(@1);",

  1042                          smapper.popI(), smapper.popA(), smapper.pushA());

  1043                     break;

  1044                 case opc_iaload:

  1045                 case opc_baload:

  1046                 case opc_caload:

  1047                 case opc_saload:

  1048                     emit(out, "var @3 = @2.at(@1);",

  1049                          smapper.popI(), smapper.popA(), smapper.pushI());

  1050                     break;

  1051                 case opc_pop:

  1052                 case opc_pop2:

  1053                     smapper.pop(1);

  1054                     debug("/* pop */");

  1055                     break;

  1056                 case opc_dup: {

  1057                     final Variable v = smapper.get(0);

  1058                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1059                     break;

  1060                 }

  1061                 case opc_dup2: {

  1062                     final Variable vi1 = smapper.get(0);

  1064                     if (vi1.isCategory2()) {

  1065                         emit(out, "var @1 = @2;",

  1066                              smapper.pushT(vi1.getType()), vi1);

  1067                     } else {

  1068                         final Variable vi2 = smapper.get(1);

  1069                         emit(out, "var @1 = @2, @3 = @4;",

  1070                              smapper.pushT(vi2.getType()), vi2,

  1071                              smapper.pushT(vi1.getType()), vi1);

  1072                     }

  1073                     break;

  1074                 }

  1075                 case opc_dup_x1: {

  1076                     final Variable vi1 = smapper.pop();

  1077                     final Variable vi2 = smapper.pop();

  1078                     final Variable vo3 = smapper.pushT(vi1.getType());

  1079                     final Variable vo2 = smapper.pushT(vi2.getType());

  1080                     final Variable vo1 = smapper.pushT(vi1.getType());

  1082                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1083                          vo1, vi1, vo2, vi2, vo3, vo1);

  1084                     break;

  1085                 }

  1086                 case opc_dup2_x1: {

  1087                     final Variable vi1 = smapper.pop();

  1088                     final Variable vi2 = smapper.pop();

  1090                     if (vi1.isCategory2()) {

  1091                         final Variable vo3 = smapper.pushT(vi1.getType());

  1092                         final Variable vo2 = smapper.pushT(vi2.getType());

  1093                         final Variable vo1 = smapper.pushT(vi1.getType());

  1095                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1096                              vo1, vi1, vo2, vi2, vo3, vo1);

  1097                     } else {

  1098                         final Variable vi3 = smapper.pop();

  1099                         final Variable vo5 = smapper.pushT(vi2.getType());

  1100                         final Variable vo4 = smapper.pushT(vi1.getType());

  1101                         final Variable vo3 = smapper.pushT(vi3.getType());

  1102                         final Variable vo2 = smapper.pushT(vi2.getType());

  1103                         final Variable vo1 = smapper.pushT(vi1.getType());

  1105                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1106                              vo1, vi1, vo2, vi2, vo3, vi3);

  1107                         emit(out, " @1 = @2, @3 = @4;",

  1108                              vo4, vo1, vo5, vo2);

  1109                     }

  1110                     break;

  1111                 }

  1112                 case opc_dup_x2: {

  1113                     final Variable vi1 = smapper.pop();

  1114                     final Variable vi2 = smapper.pop();

  1116                     if (vi2.isCategory2()) {

  1117                         final Variable vo3 = smapper.pushT(vi1.getType());

  1118                         final Variable vo2 = smapper.pushT(vi2.getType());

  1119                         final Variable vo1 = smapper.pushT(vi1.getType());

  1121                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1122                              vo1, vi1, vo2, vi2, vo3, vo1);

  1123                     } else {

  1124                         final Variable vi3 = smapper.pop();

  1125                         final Variable vo4 = smapper.pushT(vi1.getType());

  1126                         final Variable vo3 = smapper.pushT(vi3.getType());

  1127                         final Variable vo2 = smapper.pushT(vi2.getType());

  1128                         final Variable vo1 = smapper.pushT(vi1.getType());

  1130                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1131                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1132                     }

  1133                     break;

  1134                 }

  1135                 case opc_dup2_x2: {

  1136                     final Variable vi1 = smapper.pop();

  1137                     final Variable vi2 = smapper.pop();

  1139                     if (vi1.isCategory2()) {

  1140                         if (vi2.isCategory2()) {

  1141                             final Variable vo3 = smapper.pushT(vi1.getType());

  1142                             final Variable vo2 = smapper.pushT(vi2.getType());

  1143                             final Variable vo1 = smapper.pushT(vi1.getType());

  1145                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1146                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1147                         } else {

  1148                             final Variable vi3 = smapper.pop();

  1149                             final Variable vo4 = smapper.pushT(vi1.getType());

  1150                             final Variable vo3 = smapper.pushT(vi3.getType());

  1151                             final Variable vo2 = smapper.pushT(vi2.getType());

  1152                             final Variable vo1 = smapper.pushT(vi1.getType());

  1154                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1155                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1156                         }

  1157                     } else {

  1158                         final Variable vi3 = smapper.pop();

  1160                         if (vi3.isCategory2()) {

  1161                             final Variable vo5 = smapper.pushT(vi2.getType());

  1162                             final Variable vo4 = smapper.pushT(vi1.getType());

  1163                             final Variable vo3 = smapper.pushT(vi3.getType());

  1164                             final Variable vo2 = smapper.pushT(vi2.getType());

  1165                             final Variable vo1 = smapper.pushT(vi1.getType());

  1167                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1168                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1169                             emit(out, " @1 = @2, @3 = @4;",

  1170                                  vo4, vo1, vo5, vo2);

  1171                         } else {

  1172                             final Variable vi4 = smapper.pop();

  1173                             final Variable vo6 = smapper.pushT(vi2.getType());

  1174                             final Variable vo5 = smapper.pushT(vi1.getType());

  1175                             final Variable vo4 = smapper.pushT(vi4.getType());

  1176                             final Variable vo3 = smapper.pushT(vi3.getType());

  1177                             final Variable vo2 = smapper.pushT(vi2.getType());

  1178                             final Variable vo1 = smapper.pushT(vi1.getType());

  1180                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1181                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1182                             emit(out, " @1 = @2, @3 = @4;",

  1183                                  vo5, vo1, vo6, vo2);

  1184                         }

  1185                     }

  1186                     break;

  1187                 }

  1188                 case opc_swap: {

  1189                     final Variable vi1 = smapper.get(0);

  1190                     final Variable vi2 = smapper.get(1);

  1192                     if (vi1.getType() == vi2.getType()) {

  1193                         final Variable tmp = smapper.pushT(vi1.getType());

  1195                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1196                              tmp, vi1, vi2);

  1197                         smapper.pop(1);

  1198                     } else {

  1199                         smapper.pop(2);

  1200                         smapper.pushT(vi1.getType());

  1201                         smapper.pushT(vi2.getType());

  1202                     }

  1203                     break;

  1204                 }

  1205                 case opc_bipush:

  1206                     emit(out, "var @1 = @2;",

  1207                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1208                     break;

  1209                 case opc_sipush:

  1210                     emit(out, "var @1 = @2;",

  1211                          smapper.pushI(),

  1212                          Integer.toString(readIntArg(byteCodes, i)));

  1213                     i += 2;

  1214                     break;

  1215                 case opc_getfield: {

  1216                     int indx = readIntArg(byteCodes, i);

  1217                     String[] fi = jc.getFieldInfoName(indx);

  1218                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1219                     final String mangleClass = mangleSig(fi[0]);

  1220                     final String mangleClassAccess = accessClass(mangleClass);

  1221                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1222                          smapper.popA(),

  1223                          smapper.pushT(type), fi[1], mangleClassAccess

  1224                     );

  1225                     i += 2;

  1226                     break;

  1227                 }

  1228                 case opc_putfield: {

  1229                     int indx = readIntArg(byteCodes, i);

  1230                     String[] fi = jc.getFieldInfoName(indx);

  1231                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1232                     final String mangleClass = mangleSig(fi[0]);

  1233                     final String mangleClassAccess = accessClass(mangleClass);

  1234                     emit(out, "@4(false)._@3.call(@2, @1);",

  1235                          smapper.popT(type),

  1236                          smapper.popA(), fi[1],

  1237                          mangleClassAccess

  1238                     );

  1239                     i += 2;

  1240                     break;

  1241                 }

  1242                 case opc_getstatic: {

  1243                     int indx = readIntArg(byteCodes, i);

  1244                     String[] fi = jc.getFieldInfoName(indx);

  1245                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1246                     emit(out, "var @1 = @2(false)._@3();",

  1247                          smapper.pushT(type),

  1248                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1249                     i += 2;

  1250                     addReference(fi[0]);

  1251                     break;

  1252                 }

  1253                 case opc_putstatic: {

  1254                     int indx = readIntArg(byteCodes, i);

  1255                     String[] fi = jc.getFieldInfoName(indx);

  1256                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1257                     emit(out, "@1(false)._@2(@3);",

  1258                          accessClass(fi[0].replace('/', '_')), fi[1],

  1259                          smapper.popT(type));

  1260                     i += 2;

  1261                     addReference(fi[0]);

  1262                     break;

  1263                 }

  1264                 case opc_checkcast: {

  1265                     int indx = readIntArg(byteCodes, i);

  1266                     final String type = jc.getClassName(indx);

  1267                     if (!type.startsWith("[")) {

  1268                         emit(out,

  1269                              "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1270                              smapper.getA(0), type.replace('/', '_'));

  1271                     } else {

  1272                         emit(out, "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@2').cast__Ljava_lang_Object_2Ljava_lang_Object_2(@1);",

  1273                              smapper.getA(0), type

  1274                         );

  1275                     }

  1276                     i += 2;

  1277                     break;

  1278                 }

  1279                 case opc_instanceof: {

  1280                     int indx = readIntArg(byteCodes, i);

  1281                     final String type = jc.getClassName(indx);

  1282                     if (!type.startsWith("[")) {

  1283                         emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  1284                              smapper.popA(), smapper.pushI(),

  1285                              type.replace('/', '_'));

  1286                     } else {

  1287                         emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1288                             smapper.popA(), smapper.pushI(),

  1289                             type

  1290                         );

  1291                     }

  1292                     i += 2;

  1293                     break;

  1294                 }

  1295                 case opc_athrow: {

  1296                     final Variable v = smapper.popA();

  1297                     smapper.clear();

  1299                     emit(out, "{ var @1 = @2; throw @2; }",

  1300                          smapper.pushA(), v);

  1301                     break;

  1302                 }

  1304                 case opc_monitorenter: {

  1305                     out.append("/* monitor enter */");

  1306                     smapper.popA();

  1307                     break;

  1308                 }

  1310                 case opc_monitorexit: {

  1311                     out.append("/* monitor exit */");

  1312                     smapper.popA();

  1313                     break;

  1314                 }

  1316                 case opc_wide:

  1317                     wide = true;

  1318                     break;

  1320                 default: {

  1321                     wide = false;

  1322                     emit(out, "throw 'unknown bytecode @1';",

  1323                          Integer.toString(c));

  1324                 }

  1325             }

  1326             if (debug(" //")) {

  1327                 for (int j = prev; j <= i; j++) {

  1328                     out.append(" ");

  1329                     final int cc = readUByte(byteCodes, j);

  1330                     out.append(Integer.toString(cc));

  1331                 }

  1332             }

  1333             out.append("\n");

  1334         }

  1335         if (previousTrap != null) {

  1336             generateCatch(previousTrap);

  1337         }

  1338         out.append("  }\n");

  1339         out.append("};");

  1340     }

  1342     private int generateIf(byte[] byteCodes, int i,

  1343                            final Variable v2, final Variable v1,

  1344                            final String test) throws IOException {

  1345         int indx = i + readIntArg(byteCodes, i);

  1346         out.append("if (").append(v1)

  1347            .append(' ').append(test).append(' ')

  1348            .append(v2).append(") { gt = " + indx)

  1349            .append("; continue; }");

  1350         return i + 2;

  1351     }

  1353     private int readIntArg(byte[] byteCodes, int offsetInstruction) {

  1354         final int indxHi = byteCodes[offsetInstruction + 1] << 8;

  1355         final int indxLo = byteCodes[offsetInstruction + 2];

  1356         return (indxHi & 0xffffff00) | (indxLo & 0xff);

  1357     }

  1358     private int readInt4(byte[] byteCodes, int offset) {

  1359         final int d = byteCodes[offset + 0] << 24;

  1360         final int c = byteCodes[offset + 1] << 16;

  1361         final int b = byteCodes[offset + 2] << 8;

  1362         final int a = byteCodes[offset + 3];

  1363         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1364     }

  1365     private int readUByte(byte[] byteCodes, int offset) {

  1366         return byteCodes[offset] & 0xff;

  1367     }

  1369     private int readUShort(byte[] byteCodes, int offset) {

  1370         return ((byteCodes[offset] & 0xff) << 8)

  1371                     | (byteCodes[offset + 1] & 0xff);

  1372     }

  1374     private int readShort(byte[] byteCodes, int offset) {

  1375         return (byteCodes[offset] << 8)

  1376                     | (byteCodes[offset + 1] & 0xff);

  1377     }

  1379     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1380         int i = 0;

  1381         Boolean count = null;

  1382         boolean array = false;

  1383         sig.append("__");

  1384         int firstPos = sig.length();

  1385         while (i < descriptor.length()) {

  1386             char ch = descriptor.charAt(i++);

  1387             switch (ch) {

  1388                 case '(':

  1389                     count = true;

  1390                     continue;

  1391                 case ')':

  1392                     count = false;

  1393                     continue;

  1394                 case 'B':

  1395                 case 'C':

  1396                 case 'D':

  1397                 case 'F':

  1398                 case 'I':

  1399                 case 'J':

  1400                 case 'S':

  1401                 case 'Z':

  1402                     if (count) {

  1403                         if (array) {

  1404                             sig.append("_3");

  1405                         }

  1406                         sig.append(ch);

  1407                         if (ch == 'J' || ch == 'D') {

  1408                             cnt.append('1');

  1409                         } else {

  1410                             cnt.append('0');

  1411                         }

  1412                     } else {

  1413                         sig.insert(firstPos, ch);

  1414                         if (array) {

  1415                             returnType[0] = '[';

  1416                             sig.insert(firstPos, "_3");

  1417                         } else {

  1418                             returnType[0] = ch;

  1419                         }

  1420                     }

  1421                     array = false;

  1422                     continue;

  1423                 case 'V':

  1424                     assert !count;

  1425                     returnType[0] = 'V';

  1426                     sig.insert(firstPos, 'V');

  1427                     continue;

  1428                 case 'L':

  1429                     int next = descriptor.indexOf(';', i);

  1430                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1431                     if (count) {

  1432                         if (array) {

  1433                             sig.append("_3");

  1434                         }

  1435                         sig.append(realSig);

  1436                         cnt.append('0');

  1437                     } else {

  1438                         sig.insert(firstPos, realSig);

  1439                         if (array) {

  1440                             sig.insert(firstPos, "_3");

  1441                         }

  1442                         returnType[0] = 'L';

  1443                     }

  1444                     i = next + 1;

  1445                     array = false;

  1446                     continue;

  1447                 case '[':

  1448                     array = true;

  1449                     continue;

  1450                 default:

  1451                     throw new IllegalStateException("Invalid char: " + ch);

  1452             }

  1453         }

  1454     }

  1456     static String mangleSig(String sig) {

  1457         return mangleSig(sig, 0, sig.length());

  1458     }

  1460     private static String mangleSig(String txt, int first, int last) {

  1461         StringBuilder sb = new StringBuilder();

  1462         for (int i = first; i < last; i++) {

  1463             final char ch = txt.charAt(i);

  1464             switch (ch) {

  1465                 case '/': sb.append('_'); break;

  1466                 case '_': sb.append("_1"); break;

  1467                 case ';': sb.append("_2"); break;

  1468                 case '[': sb.append("_3"); break;

  1469                 default: sb.append(ch); break;

  1470             }

  1471         }

  1472         return sb.toString();

  1473     }

  1475     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1476         StringBuilder name = new StringBuilder();

  1477         if ("<init>".equals(m.getName())) { // NOI18N

  1478             name.append("cons"); // NOI18N

  1479         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1480             name.append("class"); // NOI18N

  1481         } else {

  1482             name.append(m.getName());

  1483         }

  1485         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1486         return name.toString();

  1487     }

  1489     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1490         StringBuilder name = new StringBuilder();

  1491         String descr = mi[2];//mi.getDescriptor();

  1492         String nm= mi[1];

  1493         if ("<init>".equals(nm)) { // NOI18N

  1494             name.append("cons"); // NOI18N

  1495         } else {

  1496             name.append(nm);

  1497         }

  1498         countArgs(descr, returnType, name, cnt);

  1499         return name.toString();

  1500     }

  1502     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1503     throws IOException {

  1504         int methodIndex = readIntArg(byteCodes, i);

  1505         String[] mi = jc.getFieldInfoName(methodIndex);

  1506         char[] returnType = { 'V' };

  1507         StringBuilder cnt = new StringBuilder();

  1508         String mn = findMethodName(mi, cnt, returnType);

  1510         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1511         final Variable[] vars = new Variable[numArguments];

  1513         for (int j = numArguments - 1; j >= 0; --j) {

  1514             vars[j] = mapper.pop();

  1515         }

  1517         if (returnType[0] != 'V') {

  1518             out.append("var ")

  1519                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1520                .append(" = ");

  1521         }

  1523         final String in = mi[0];

  1524         out.append(accessClass(in.replace('/', '_')));

  1525         out.append("(false).");

  1526         if (mn.startsWith("cons_")) {

  1527             out.append("constructor.");

  1528         }

  1529         out.append(mn);

  1530         if (isStatic) {

  1531             out.append('(');

  1532         } else {

  1533             out.append(".call(");

  1534         }

  1535         if (numArguments > 0) {

  1536             out.append(vars[0]);

  1537             for (int j = 1; j < numArguments; ++j) {

  1538                 out.append(", ");

  1539                 out.append(vars[j]);

  1540             }

  1541         }

  1542         out.append(");");

  1543         i += 2;

  1544         addReference(in);

  1545         return i;

  1546     }

  1547     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1548     throws IOException {

  1549         int methodIndex = readIntArg(byteCodes, i);

  1550         String[] mi = jc.getFieldInfoName(methodIndex);

  1551         char[] returnType = { 'V' };

  1552         StringBuilder cnt = new StringBuilder();

  1553         String mn = findMethodName(mi, cnt, returnType);

  1555         final int numArguments = cnt.length() + 1;

  1556         final Variable[] vars = new Variable[numArguments];

  1558         for (int j = numArguments - 1; j >= 0; --j) {

  1559             vars[j] = mapper.pop();

  1560         }

  1562         if (returnType[0] != 'V') {

  1563             out.append("var ")

  1564                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1565                .append(" = ");

  1566         }

  1568         out.append(vars[0]).append('.');

  1569         out.append(mn);

  1570         out.append('(');

  1571         String sep = "";

  1572         for (int j = 1; j < numArguments; ++j) {

  1573             out.append(sep);

  1574             out.append(vars[j]);

  1575             sep = ", ";

  1576         }

  1577         out.append(");");

  1578         i += 2;

  1579         return i;

  1580     }

  1582     private void addReference(String cn) throws IOException {

  1583         if (requireReference(cn)) {

  1584             debug(" /* needs " + cn + " */");

  1585         }

  1586     }

  1588     private void outType(String d, StringBuilder out) {

  1589         int arr = 0;

  1590         while (d.charAt(0) == '[') {

  1591             out.append('A');

  1592             d = d.substring(1);

  1593         }

  1594         if (d.charAt(0) == 'L') {

  1595             assert d.charAt(d.length() - 1) == ';';

  1596             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1597         } else {

  1598             out.append(d);

  1599         }

  1600     }

  1602     private String encodeConstant(int entryIndex) throws IOException {

  1603         String[] classRef = { null };

  1604         String s = jc.stringValue(entryIndex, classRef);

  1605         if (classRef[0] != null) {

  1606             if (classRef[0].startsWith("[")) {

  1607                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1608             } else {

  1609                 addReference(classRef[0]);

  1610                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1611             }

  1612         }

  1613         return s;

  1614     }

  1616     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1617         byte[] arr = m.findAnnotationData(true);

  1618         if (arr == null) {

  1619             return null;

  1620         }

  1621         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1622         class P extends AnnotationParser {

  1623             public P() {

  1624                 super(false, true);

  1625             }

  1627             int cnt;

  1628             String[] args = new String[30];

  1629             String body;

  1631             @Override

  1632             protected void visitAttr(String type, String attr, String at, String value) {

  1633                 if (type.equals(jvmType)) {

  1634                     if ("body".equals(attr)) {

  1635                         body = value;

  1636                     } else if ("args".equals(attr)) {

  1637                         args[cnt++] = value;

  1638                     } else {

  1639                         throw new IllegalArgumentException(attr);

  1640                     }

  1641                 }

  1642             }

  1643         }

  1644         P p = new P();

  1645         p.parse(arr, jc);

  1646         if (p.body == null) {

  1647             return null;

  1648         }

  1649         StringBuilder cnt = new StringBuilder();

  1650         final String mn = findMethodName(m, cnt);

  1651         out.append(prefix).append(mn);

  1652         out.append(" = function(");

  1653         String space = "";

  1654         int index = 0;

  1655         for (int i = 0; i < cnt.length(); i++) {

  1656             out.append(space);

  1657             space = outputArg(out, p.args, index);

  1658             index++;

  1659         }

  1660         out.append(") {").append("\n");

  1661         out.append(p.body);

  1662         out.append("\n}\n");

  1663         return mn;

  1664     }

  1665     private static String className(ClassData jc) {

  1666         //return jc.getName().getInternalName().replace('/', '_');

  1667         return jc.getClassName().replace('/', '_');

  1668     }

  1670     private static String[] findAnnotation(

  1671         byte[] arr, ClassData cd, final String className,

  1672         final String... attrNames

  1673     ) throws IOException {

  1674         if (arr == null) {

  1675             return null;

  1676         }

  1677         final String[] values = new String[attrNames.length];

  1678         final boolean[] found = { false };

  1679         final String jvmType = "L" + className.replace('.', '/') + ";";

  1680         AnnotationParser ap = new AnnotationParser(false, true) {

  1681             @Override

  1682             protected void visitAttr(String type, String attr, String at, String value) {

  1683                 if (type.equals(jvmType)) {

  1684                     found[0] = true;

  1685                     for (int i = 0; i < attrNames.length; i++) {

  1686                         if (attrNames[i].equals(attr)) {

  1687                             values[i] = value;

  1688                         }

  1689                     }

  1690                 }

  1691             }

  1693         };

  1694         ap.parse(arr, cd);

  1695         return found[0] ? values : null;

  1696     }

  1698     private CharSequence initField(FieldData v) {

  1699         final String is = v.getInternalSig();

  1700         if (is.length() == 1) {

  1701             switch (is.charAt(0)) {

  1702                 case 'S':

  1703                 case 'J':

  1704                 case 'B':

  1705                 case 'Z':

  1706                 case 'C':

  1707                 case 'I': return " = 0;";

  1708                 case 'F':

  1709                 case 'D': return " = 0.0;";

  1710                 default:

  1711                     throw new IllegalStateException(is);

  1712             }

  1713         }

  1714         return " = null;";

  1715     }

  1717     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1718         AnnotationParser ap = new AnnotationParser(true, false) {

  1719             int[] cnt = new int[32];

  1720             int depth;

  1722             @Override

  1723             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1724                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1725                 requireReference(slashType);

  1727                 if (cnt[depth]++ > 0) {

  1728                     out.append(",");

  1729                 }

  1730                 if (top) {

  1731                     out.append('"').append(attrType).append("\" : ");

  1732                 }

  1733                 out.append("{\n");

  1734                 cnt[++depth] = 0;

  1735             }

  1737             @Override

  1738             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1739                 out.append("\n}\n");

  1740                 depth--;

  1741             }

  1743             @Override

  1744             protected void visitValueStart(String attrName, char type) throws IOException {

  1745                 if (cnt[depth]++ > 0) {

  1746                     out.append(",\n");

  1747                 }

  1748                 cnt[++depth] = 0;

  1749                 if (attrName != null) {

  1750                     out.append(attrName).append(" : ");

  1751                 }

  1752                 if (type == '[') {

  1753                     out.append("[");

  1754                 }

  1755             }

  1757             @Override

  1758             protected void visitValueEnd(String attrName, char type) throws IOException {

  1759                 if (type == '[') {

  1760                     out.append("]");

  1761                 }

  1762                 depth--;

  1763             }

  1765             @Override

  1766             protected void visitAttr(String type, String attr, String attrType, String value)

  1767             throws IOException {

  1768                 if (attr == null && value == null) {

  1769                     return;

  1770                 }

  1771                 out.append(value);

  1772             }

  1774             @Override

  1775             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1776             throws IOException {

  1777                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1778                 requireReference(slashType);

  1780                 out.append(accessClass(slashType.replace('/', '_')))

  1781                    .append("(false).constructor.").append(value);

  1782             }

  1783         };

  1784         ap.parse(data, cd);

  1785     }

  1787     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1788         final String name = args[indx];

  1789         if (name == null) {

  1790             return "";

  1791         }

  1792         if (name.contains(",")) {

  1793             throw new IOException("Wrong parameter with ',': " + name);

  1794         }

  1795         out.append(name);

  1796         return ",";

  1797     }

  1799     private static void emit(final Appendable out,

  1800                              final String format,

  1801                              final CharSequence... params) throws IOException {

  1802         final int length = format.length();

  1804         int processed = 0;

  1805         int paramOffset = format.indexOf('@');

  1806         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1807             final char paramChar = format.charAt(paramOffset + 1);

  1808             if ((paramChar >= '1') && (paramChar <= '9')) {

  1809                 final int paramIndex = paramChar - '0' - 1;

  1811                 out.append(format, processed, paramOffset);

  1812                 out.append(params[paramIndex]);

  1814                 ++paramOffset;

  1815                 processed = paramOffset + 1;

  1816             }

  1818             paramOffset = format.indexOf('@', paramOffset + 1);

  1819         }

  1821         out.append(format, processed, length);

  1822     }

  1824     private void generateCatch(TrapData[] traps) throws IOException {

  1825         out.append("} catch (e) {\n");

  1826         int finallyPC = -1;

  1827         for (TrapData e : traps) {

  1828             if (e == null) {

  1829                 break;

  1830             }

  1831             if (e.catch_cpx != 0) { //not finally

  1832                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1833                 addReference(classInternalName);

  1834                 if ("java/lang/Throwable".equals(classInternalName)) {

  1835                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1836                     out.append("  var stA0 = e;");

  1837                     out.append("} else {");

  1838                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1839                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1840                     out.append("}");

  1841                     out.append("gt=" + e.handler_pc + "; continue;");

  1842                 } else {

  1843                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1844                     out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");

  1845                     out.append("}\n");

  1846                 }

  1847             } else {

  1848                 finallyPC = e.handler_pc;

  1849             }

  1850         }

  1851         if (finallyPC == -1) {

  1852             out.append("throw e;");

  1853         } else {

  1854             out.append("gt=" + finallyPC + "; var stA0 = e; continue;");

  1855         }

  1856         out.append("\n}");

  1857     }

  1858 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 10 Mar 2013 21:28:00 +0100
changeset 834	b0b23e5ebf9d
parent 810	9eb750594b15
child 839	2838bc348caf
child 848	677c9bcf507f
permissions	-rw-r--r--