hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@9eb750594b15

     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         out.append("\n  }");

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

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

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

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

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

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

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

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

   203                 "name", "value"

   204             );

   205             if (only != null) {

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

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

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

   209                 }

   210                 continue;

   211             }

   212             if (!v.isStatic()) {

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

   214                     append(className).append('_').

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

   216             }

   217         }

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

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

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

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

   222         StringBuilder sb = new StringBuilder();

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

   224             sb.append("\n").append(init).append("();");

   225         }

   226         return sb.toString();

   227     }

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

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

   230         if (jsb != null) {

   231             return jsb;

   232         }

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

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

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

   236         }

   237         generateMethod(prefix, mn, m);

   238         return mn;

   239     }

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

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

   243         if (jsb != null) {

   244             return jsb;

   245         }

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

   247         generateMethod(prefix, mn, m);

   248         return mn;

   249     }

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

   252             throws IOException {

   253         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   254         TrapDataIterator trap = m.getTrapDataIterator();

   255         final LocalsMapper lmapper =

   256                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   263         if (byteCodes == null) {

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

   265                .append(jc.getClassName()).append('.')

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

   267             out.append("};");

   268             return;

   269         }

   271         final StackMapper smapper = new StackMapper();

   273         if (!m.isStatic()) {

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

   275         }

   277         int lastStackFrame = -1;

   278         TrapData[] previousTrap = null;

   279         boolean wide = false;

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

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

   283             int prev = i;

   284             stackMapIterator.advanceTo(i);

   285             boolean changeInCatch = trap.advanceTo(i);

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

   287                 if (previousTrap != null) {

   288                     generateCatch(previousTrap);

   289                     previousTrap = null;

   290                 }

   291             }

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

   293                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   297                 changeInCatch = true;

   298             } else {

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

   300             }

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

   302                 out.append("try {");

   303                 previousTrap = trap.current();

   304             }

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

   306             switch (c) {

   307                 case opc_aload_0:

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

   309                     break;

   310                 case opc_iload_0:

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

   312                     break;

   313                 case opc_lload_0:

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

   315                     break;

   316                 case opc_fload_0:

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

   318                     break;

   319                 case opc_dload_0:

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

   321                     break;

   322                 case opc_aload_1:

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

   324                     break;

   325                 case opc_iload_1:

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

   327                     break;

   328                 case opc_lload_1:

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

   330                     break;

   331                 case opc_fload_1:

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

   333                     break;

   334                 case opc_dload_1:

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

   336                     break;

   337                 case opc_aload_2:

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

   339                     break;

   340                 case opc_iload_2:

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

   342                     break;

   343                 case opc_lload_2:

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

   345                     break;

   346                 case opc_fload_2:

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

   348                     break;

   349                 case opc_dload_2:

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

   351                     break;

   352                 case opc_aload_3:

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

   354                     break;

   355                 case opc_iload_3:

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

   357                     break;

   358                 case opc_lload_3:

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

   360                     break;

   361                 case opc_fload_3:

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

   363                     break;

   364                 case opc_dload_3:

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

   366                     break;

   367                 case opc_iload: {

   368                     ++i;

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

   370                                           : readUByte(byteCodes, i);

   371                     wide = false;

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

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

   374                     break;

   375                 }

   376                 case opc_lload: {

   377                     ++i;

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

   379                                           : readUByte(byteCodes, i);

   380                     wide = false;

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

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

   383                     break;

   384                 }

   385                 case opc_fload: {

   386                     ++i;

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

   388                                           : readUByte(byteCodes, i);

   389                     wide = false;

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

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

   392                     break;

   393                 }

   394                 case opc_dload: {

   395                     ++i;

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

   397                                           : readUByte(byteCodes, i);

   398                     wide = false;

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

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

   401                     break;

   402                 }

   403                 case opc_aload: {

   404                     ++i;

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

   406                                           : readUByte(byteCodes, i);

   407                     wide = false;

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

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

   410                     break;

   411                 }

   412                 case opc_istore: {

   413                     ++i;

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

   415                                           : readUByte(byteCodes, i);

   416                     wide = false;

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

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

   419                     break;

   420                 }

   421                 case opc_lstore: {

   422                     ++i;

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

   424                                           : readUByte(byteCodes, i);

   425                     wide = false;

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

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

   428                     break;

   429                 }

   430                 case opc_fstore: {

   431                     ++i;

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

   433                                           : readUByte(byteCodes, i);

   434                     wide = false;

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

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

   437                     break;

   438                 }

   439                 case opc_dstore: {

   440                     ++i;

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

   442                                           : readUByte(byteCodes, i);

   443                     wide = false;

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

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

   446                     break;

   447                 }

   448                 case opc_astore: {

   449                     ++i;

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

   451                                           : readUByte(byteCodes, i);

   452                     wide = false;

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

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

   455                     break;

   456                 }

   457                 case opc_astore_0:

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

   459                     break;

   460                 case opc_istore_0:

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

   462                     break;

   463                 case opc_lstore_0:

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

   465                     break;

   466                 case opc_fstore_0:

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

   468                     break;

   469                 case opc_dstore_0:

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

   471                     break;

   472                 case opc_astore_1:

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

   474                     break;

   475                 case opc_istore_1:

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

   477                     break;

   478                 case opc_lstore_1:

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

   480                     break;

   481                 case opc_fstore_1:

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

   483                     break;

   484                 case opc_dstore_1:

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

   486                     break;

   487                 case opc_astore_2:

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

   489                     break;

   490                 case opc_istore_2:

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

   492                     break;

   493                 case opc_lstore_2:

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

   495                     break;

   496                 case opc_fstore_2:

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

   498                     break;

   499                 case opc_dstore_2:

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

   501                     break;

   502                 case opc_astore_3:

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

   504                     break;

   505                 case opc_istore_3:

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

   507                     break;

   508                 case opc_lstore_3:

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

   510                     break;

   511                 case opc_fstore_3:

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

   513                     break;

   514                 case opc_dstore_3:

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

   516                     break;

   517                 case opc_iadd:

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

   519                     break;

   520                 case opc_ladd:

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

   522                     break;

   523                 case opc_fadd:

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

   525                     break;

   526                 case opc_dadd:

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

   528                     break;

   529                 case opc_isub:

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

   531                     break;

   532                 case opc_lsub:

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

   534                     break;

   535                 case opc_fsub:

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

   537                     break;

   538                 case opc_dsub:

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

   540                     break;

   541                 case opc_imul:

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

   543                     break;

   544                 case opc_lmul:

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

   546                     break;

   547                 case opc_fmul:

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

   549                     break;

   550                 case opc_dmul:

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

   552                     break;

   553                 case opc_idiv:

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

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

   556                     break;

   557                 case opc_ldiv:

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

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

   560                     break;

   561                 case opc_fdiv:

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

   563                     break;

   564                 case opc_ddiv:

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

   566                     break;

   567                 case opc_irem:

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

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

   570                     break;

   571                 case opc_lrem:

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

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

   574                     break;

   575                 case opc_frem:

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

   577                     break;

   578                 case opc_drem:

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

   580                     break;

   581                 case opc_iand:

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

   583                     break;

   584                 case opc_land:

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

   586                     break;

   587                 case opc_ior:

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

   589                     break;

   590                 case opc_lor:

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

   592                     break;

   593                 case opc_ixor:

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

   595                     break;

   596                 case opc_lxor:

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

   598                     break;

   599                 case opc_ineg:

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

   601                     break;

   602                 case opc_lneg:

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

   604                     break;

   605                 case opc_fneg:

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

   607                     break;

   608                 case opc_dneg:

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

   610                     break;

   611                 case opc_ishl:

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

   613                     break;

   614                 case opc_lshl:

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

   616                     break;

   617                 case opc_ishr:

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

   619                     break;

   620                 case opc_lshr:

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

   622                     break;

   623                 case opc_iushr:

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

   625                     break;

   626                 case opc_lushr:

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

   628                     break;

   629                 case opc_iinc: {

   630                     ++i;

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

   632                                              : readUByte(byteCodes, i);

   633                     ++i;

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

   635                                             : byteCodes[i];

   636                     wide = false;

   637                     if (incrBy == 1) {

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

   639                     } else {

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

   641                              lmapper.getI(varIndx),

   642                              Integer.toString(incrBy));

   643                     }

   644                     break;

   645                 }

   646                 case opc_return:

   647                     emit(out, "return;");

   648                     break;

   649                 case opc_ireturn:

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

   651                     break;

   652                 case opc_lreturn:

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

   654                     break;

   655                 case opc_freturn:

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

   657                     break;

   658                 case opc_dreturn:

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

   660                     break;

   661                 case opc_areturn:

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

   663                     break;

   664                 case opc_i2l:

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

   666                     break;

   667                 case opc_i2f:

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

   669                     break;

   670                 case opc_i2d:

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

   672                     break;

   673                 case opc_l2i:

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

   675                     break;

   676                     // max int check?

   677                 case opc_l2f:

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

   679                     break;

   680                 case opc_l2d:

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

   682                     break;

   683                 case opc_f2d:

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

   685                     break;

   686                 case opc_d2f:

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

   688                     break;

   689                 case opc_f2i:

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

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

   692                     break;

   693                 case opc_f2l:

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

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

   696                     break;

   697                 case opc_d2i:

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

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

   700                     break;

   701                 case opc_d2l:

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

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

   704                     break;

   705                 case opc_i2b:

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

   707                     break;

   708                 case opc_i2c:

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

   710                     break;

   711                 case opc_i2s:

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

   713                     break;

   714                 case opc_aconst_null:

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

   716                     break;

   717                 case opc_iconst_m1:

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

   719                     break;

   720                 case opc_iconst_0:

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

   722                     break;

   723                 case opc_dconst_0:

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

   725                     break;

   726                 case opc_lconst_0:

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

   728                     break;

   729                 case opc_fconst_0:

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

   731                     break;

   732                 case opc_iconst_1:

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

   734                     break;

   735                 case opc_lconst_1:

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

   737                     break;

   738                 case opc_fconst_1:

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

   740                     break;

   741                 case opc_dconst_1:

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

   743                     break;

   744                 case opc_iconst_2:

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

   746                     break;

   747                 case opc_fconst_2:

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

   749                     break;

   750                 case opc_iconst_3:

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

   752                     break;

   753                 case opc_iconst_4:

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

   755                     break;

   756                 case opc_iconst_5:

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

   758                     break;

   759                 case opc_ldc: {

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

   761                     String v = encodeConstant(indx);

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

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

   764                     break;

   765                 }

   766                 case opc_ldc_w:

   767                 case opc_ldc2_w: {

   768                     int indx = readIntArg(byteCodes, i);

   769                     i += 2;

   770                     String v = encodeConstant(indx);

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

   772                     if (type == VarType.LONG) {

   773                         final Long lv = new Long(v);

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

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

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

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

   778                     } else {

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

   780                     }

   781                     break;

   782                 }

   783                 case opc_lcmp:

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

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

   786                     break;

   787                 case opc_fcmpl:

   788                 case opc_fcmpg:

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

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

   791                     break;

   792                 case opc_dcmpl:

   793                 case opc_dcmpg:

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

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

   796                     break;

   797                 case opc_if_acmpeq:

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

   799                                    "===");

   800                     break;

   801                 case opc_if_acmpne:

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

   803                                    "!==");

   804                     break;

   805                 case opc_if_icmpeq:

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

   807                                    "==");

   808                     break;

   809                 case opc_ifeq: {

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

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

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

   813                     i += 2;

   814                     break;

   815                 }

   816                 case opc_ifne: {

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

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

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

   820                     i += 2;

   821                     break;

   822                 }

   823                 case opc_iflt: {

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

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

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

   827                     i += 2;

   828                     break;

   829                 }

   830                 case opc_ifle: {

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

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

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

   834                     i += 2;

   835                     break;

   836                 }

   837                 case opc_ifgt: {

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

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

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

   841                     i += 2;

   842                     break;

   843                 }

   844                 case opc_ifge: {

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

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

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

   848                     i += 2;

   849                     break;

   850                 }

   851                 case opc_ifnonnull: {

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

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

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

   855                     i += 2;

   856                     break;

   857                 }

   858                 case opc_ifnull: {

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

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

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

   862                     i += 2;

   863                     break;

   864                 }

   865                 case opc_if_icmpne:

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

   867                                    "!=");

   868                     break;

   869                 case opc_if_icmplt:

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

   871                                    "<");

   872                     break;

   873                 case opc_if_icmple:

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

   875                                    "<=");

   876                     break;

   877                 case opc_if_icmpgt:

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

   879                                    ">");

   880                     break;

   881                 case opc_if_icmpge:

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

   883                                    ">=");

   884                     break;

   885                 case opc_goto: {

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

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

   888                     i += 2;

   889                     break;

   890                 }

   891                 case opc_lookupswitch: {

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

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

   894                     table += 4;

   895                     int n = readInt4(byteCodes, table);

   896                     table += 4;

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

   898                     while (n-- > 0) {

   899                         int cnstnt = readInt4(byteCodes, table);

   900                         table += 4;

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

   902                         table += 4;

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

   904                     }

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

   906                     i = table - 1;

   907                     break;

   908                 }

   909                 case opc_tableswitch: {

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

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

   912                     table += 4;

   913                     int low = readInt4(byteCodes, table);

   914                     table += 4;

   915                     int high = readInt4(byteCodes, table);

   916                     table += 4;

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

   918                     while (low <= high) {

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

   920                         table += 4;

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

   922                         low++;

   923                     }

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

   925                     i = table - 1;

   926                     break;

   927                 }

   928                 case opc_invokeinterface: {

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

   930                     break;

   931                 }

   932                 case opc_invokevirtual:

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

   934                     break;

   935                 case opc_invokespecial:

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

   937                     break;

   938                 case opc_invokestatic:

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

   940                     break;

   941                 case opc_new: {

   942                     int indx = readIntArg(byteCodes, i);

   943                     String ci = jc.getClassName(indx);

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

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

   946                     addReference(ci);

   947                     i += 2;

   948                     break;

   949                 }

   950                 case opc_newarray:

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

   952                     String jvmType;

   953                     switch (atype) {

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

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

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

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

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

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

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

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

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

   963                     }

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

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

   966                     break;

   967                 case opc_anewarray: {

   968                     int type = readIntArg(byteCodes, i);

   969                     i += 2;

   970                     String typeName = jc.getClassName(type);

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

   972                         typeName = "[" + typeName;

   973                     } else {

   974                         typeName = "[L" + typeName + ";";

   975                     }

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

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

   978                     break;

   979                 }

   980                 case opc_multianewarray: {

   981                     int type = readIntArg(byteCodes, i);

   982                     i += 2;

   983                     String typeName = jc.getClassName(type);

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

   985                     StringBuilder dims = new StringBuilder();

   986                     dims.append('[');

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

   988                         if (d != 0) {

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

   990                         }

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

   992                     }

   993                     dims.append(']');

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

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

   996                     break;

   997                 }

   998                 case opc_arraylength:

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

  1000                          smapper.popA(), smapper.pushI());

  1001                     break;

  1002                 case opc_lastore:

  1003                     emit(out, "@3.at(@2, @1);",

  1004                          smapper.popL(), smapper.popI(), smapper.popA());

  1005                     break;

  1006                 case opc_fastore:

  1007                     emit(out, "@3.at(@2, @1);",

  1008                          smapper.popF(), smapper.popI(), smapper.popA());

  1009                     break;

  1010                 case opc_dastore:

  1011                     emit(out, "@3.at(@2, @1);",

  1012                          smapper.popD(), smapper.popI(), smapper.popA());

  1013                     break;

  1014                 case opc_aastore:

  1015                     emit(out, "@3.at(@2, @1);",

  1016                          smapper.popA(), smapper.popI(), smapper.popA());

  1017                     break;

  1018                 case opc_iastore:

  1019                 case opc_bastore:

  1020                 case opc_castore:

  1021                 case opc_sastore:

  1022                     emit(out, "@3.at(@2, @1);",

  1023                          smapper.popI(), smapper.popI(), smapper.popA());

  1024                     break;

  1025                 case opc_laload:

  1026                     emit(out, "var @3 = @2.at(@1);",

  1027                          smapper.popI(), smapper.popA(), smapper.pushL());

  1028                     break;

  1029                 case opc_faload:

  1030                     emit(out, "var @3 = @2.at(@1);",

  1031                          smapper.popI(), smapper.popA(), smapper.pushF());

  1032                     break;

  1033                 case opc_daload:

  1034                     emit(out, "var @3 = @2.at(@1);",

  1035                          smapper.popI(), smapper.popA(), smapper.pushD());

  1036                     break;

  1037                 case opc_aaload:

  1038                     emit(out, "var @3 = @2.at(@1);",

  1039                          smapper.popI(), smapper.popA(), smapper.pushA());

  1040                     break;

  1041                 case opc_iaload:

  1042                 case opc_baload:

  1043                 case opc_caload:

  1044                 case opc_saload:

  1045                     emit(out, "var @3 = @2.at(@1);",

  1046                          smapper.popI(), smapper.popA(), smapper.pushI());

  1047                     break;

  1048                 case opc_pop:

  1049                 case opc_pop2:

  1050                     smapper.pop(1);

  1051                     debug("/* pop */");

  1052                     break;

  1053                 case opc_dup: {

  1054                     final Variable v = smapper.get(0);

  1055                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1056                     break;

  1057                 }

  1058                 case opc_dup2: {

  1059                     final Variable vi1 = smapper.get(0);

  1061                     if (vi1.isCategory2()) {

  1062                         emit(out, "var @1 = @2;",

  1063                              smapper.pushT(vi1.getType()), vi1);

  1064                     } else {

  1065                         final Variable vi2 = smapper.get(1);

  1066                         emit(out, "var @1 = @2, @3 = @4;",

  1067                              smapper.pushT(vi2.getType()), vi2,

  1068                              smapper.pushT(vi1.getType()), vi1);

  1069                     }

  1070                     break;

  1071                 }

  1072                 case opc_dup_x1: {

  1073                     final Variable vi1 = smapper.pop();

  1074                     final Variable vi2 = smapper.pop();

  1075                     final Variable vo3 = smapper.pushT(vi1.getType());

  1076                     final Variable vo2 = smapper.pushT(vi2.getType());

  1077                     final Variable vo1 = smapper.pushT(vi1.getType());

  1079                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1080                          vo1, vi1, vo2, vi2, vo3, vo1);

  1081                     break;

  1082                 }

  1083                 case opc_dup2_x1: {

  1084                     final Variable vi1 = smapper.pop();

  1085                     final Variable vi2 = smapper.pop();

  1087                     if (vi1.isCategory2()) {

  1088                         final Variable vo3 = smapper.pushT(vi1.getType());

  1089                         final Variable vo2 = smapper.pushT(vi2.getType());

  1090                         final Variable vo1 = smapper.pushT(vi1.getType());

  1092                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1093                              vo1, vi1, vo2, vi2, vo3, vo1);

  1094                     } else {

  1095                         final Variable vi3 = smapper.pop();

  1096                         final Variable vo5 = smapper.pushT(vi2.getType());

  1097                         final Variable vo4 = smapper.pushT(vi1.getType());

  1098                         final Variable vo3 = smapper.pushT(vi3.getType());

  1099                         final Variable vo2 = smapper.pushT(vi2.getType());

  1100                         final Variable vo1 = smapper.pushT(vi1.getType());

  1102                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1103                              vo1, vi1, vo2, vi2, vo3, vi3);

  1104                         emit(out, " @1 = @2, @3 = @4;",

  1105                              vo4, vo1, vo5, vo2);

  1106                     }

  1107                     break;

  1108                 }

  1109                 case opc_dup_x2: {

  1110                     final Variable vi1 = smapper.pop();

  1111                     final Variable vi2 = smapper.pop();

  1113                     if (vi2.isCategory2()) {

  1114                         final Variable vo3 = smapper.pushT(vi1.getType());

  1115                         final Variable vo2 = smapper.pushT(vi2.getType());

  1116                         final Variable vo1 = smapper.pushT(vi1.getType());

  1118                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1119                              vo1, vi1, vo2, vi2, vo3, vo1);

  1120                     } else {

  1121                         final Variable vi3 = smapper.pop();

  1122                         final Variable vo4 = smapper.pushT(vi1.getType());

  1123                         final Variable vo3 = smapper.pushT(vi3.getType());

  1124                         final Variable vo2 = smapper.pushT(vi2.getType());

  1125                         final Variable vo1 = smapper.pushT(vi1.getType());

  1127                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1128                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1129                     }

  1130                     break;

  1131                 }

  1132                 case opc_dup2_x2: {

  1133                     final Variable vi1 = smapper.pop();

  1134                     final Variable vi2 = smapper.pop();

  1136                     if (vi1.isCategory2()) {

  1137                         if (vi2.isCategory2()) {

  1138                             final Variable vo3 = smapper.pushT(vi1.getType());

  1139                             final Variable vo2 = smapper.pushT(vi2.getType());

  1140                             final Variable vo1 = smapper.pushT(vi1.getType());

  1142                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1143                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1144                         } else {

  1145                             final Variable vi3 = smapper.pop();

  1146                             final Variable vo4 = smapper.pushT(vi1.getType());

  1147                             final Variable vo3 = smapper.pushT(vi3.getType());

  1148                             final Variable vo2 = smapper.pushT(vi2.getType());

  1149                             final Variable vo1 = smapper.pushT(vi1.getType());

  1151                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1152                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1153                         }

  1154                     } else {

  1155                         final Variable vi3 = smapper.pop();

  1157                         if (vi3.isCategory2()) {

  1158                             final Variable vo5 = smapper.pushT(vi2.getType());

  1159                             final Variable vo4 = smapper.pushT(vi1.getType());

  1160                             final Variable vo3 = smapper.pushT(vi3.getType());

  1161                             final Variable vo2 = smapper.pushT(vi2.getType());

  1162                             final Variable vo1 = smapper.pushT(vi1.getType());

  1164                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1165                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1166                             emit(out, " @1 = @2, @3 = @4;",

  1167                                  vo4, vo1, vo5, vo2);

  1168                         } else {

  1169                             final Variable vi4 = smapper.pop();

  1170                             final Variable vo6 = smapper.pushT(vi2.getType());

  1171                             final Variable vo5 = smapper.pushT(vi1.getType());

  1172                             final Variable vo4 = smapper.pushT(vi4.getType());

  1173                             final Variable vo3 = smapper.pushT(vi3.getType());

  1174                             final Variable vo2 = smapper.pushT(vi2.getType());

  1175                             final Variable vo1 = smapper.pushT(vi1.getType());

  1177                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1178                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1179                             emit(out, " @1 = @2, @3 = @4;",

  1180                                  vo5, vo1, vo6, vo2);

  1181                         }

  1182                     }

  1183                     break;

  1184                 }

  1185                 case opc_swap: {

  1186                     final Variable vi1 = smapper.get(0);

  1187                     final Variable vi2 = smapper.get(1);

  1189                     if (vi1.getType() == vi2.getType()) {

  1190                         final Variable tmp = smapper.pushT(vi1.getType());

  1192                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1193                              tmp, vi1, vi2);

  1194                         smapper.pop(1);

  1195                     } else {

  1196                         smapper.pop(2);

  1197                         smapper.pushT(vi1.getType());

  1198                         smapper.pushT(vi2.getType());

  1199                     }

  1200                     break;

  1201                 }

  1202                 case opc_bipush:

  1203                     emit(out, "var @1 = @2;",

  1204                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1205                     break;

  1206                 case opc_sipush:

  1207                     emit(out, "var @1 = @2;",

  1208                          smapper.pushI(),

  1209                          Integer.toString(readIntArg(byteCodes, i)));

  1210                     i += 2;

  1211                     break;

  1212                 case opc_getfield: {

  1213                     int indx = readIntArg(byteCodes, i);

  1214                     String[] fi = jc.getFieldInfoName(indx);

  1215                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1216                     final String mangleClass = mangleSig(fi[0]);

  1217                     final String mangleClassAccess = accessClass(mangleClass);

  1218                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1219                          smapper.popA(),

  1220                          smapper.pushT(type), fi[1], mangleClassAccess

  1221                     );

  1222                     i += 2;

  1223                     break;

  1224                 }

  1225                 case opc_putfield: {

  1226                     int indx = readIntArg(byteCodes, i);

  1227                     String[] fi = jc.getFieldInfoName(indx);

  1228                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1229                     final String mangleClass = mangleSig(fi[0]);

  1230                     final String mangleClassAccess = accessClass(mangleClass);

  1231                     emit(out, "@4(false)._@3.call(@2, @1);",

  1232                          smapper.popT(type),

  1233                          smapper.popA(), fi[1],

  1234                          mangleClassAccess

  1235                     );

  1236                     i += 2;

  1237                     break;

  1238                 }

  1239                 case opc_getstatic: {

  1240                     int indx = readIntArg(byteCodes, i);

  1241                     String[] fi = jc.getFieldInfoName(indx);

  1242                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1243                     emit(out, "var @1 = @2(false)._@3();",

  1244                          smapper.pushT(type),

  1245                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1246                     i += 2;

  1247                     addReference(fi[0]);

  1248                     break;

  1249                 }

  1250                 case opc_putstatic: {

  1251                     int indx = readIntArg(byteCodes, i);

  1252                     String[] fi = jc.getFieldInfoName(indx);

  1253                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1254                     emit(out, "@1(false)._@2(@3);",

  1255                          accessClass(fi[0].replace('/', '_')), fi[1],

  1256                          smapper.popT(type));

  1257                     i += 2;

  1258                     addReference(fi[0]);

  1259                     break;

  1260                 }

  1261                 case opc_checkcast: {

  1262                     int indx = readIntArg(byteCodes, i);

  1263                     final String type = jc.getClassName(indx);

  1264                     if (!type.startsWith("[")) {

  1265                         emit(out,

  1266                              "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1267                              smapper.getA(0), type.replace('/', '_'));

  1268                     } else {

  1269                         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);",

  1270                              smapper.getA(0), type

  1271                         );

  1272                     }

  1273                     i += 2;

  1274                     break;

  1275                 }

  1276                 case opc_instanceof: {

  1277                     int indx = readIntArg(byteCodes, i);

  1278                     final String type = jc.getClassName(indx);

  1279                     if (!type.startsWith("[")) {

  1280                         emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  1281                              smapper.popA(), smapper.pushI(),

  1282                              type.replace('/', '_'));

  1283                     } else {

  1284                         emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1285                             smapper.popA(), smapper.pushI(),

  1286                             type

  1287                         );

  1288                     }

  1289                     i += 2;

  1290                     break;

  1291                 }

  1292                 case opc_athrow: {

  1293                     final Variable v = smapper.popA();

  1294                     smapper.clear();

  1296                     emit(out, "{ var @1 = @2; throw @2; }",

  1297                          smapper.pushA(), v);

  1298                     break;

  1299                 }

  1301                 case opc_monitorenter: {

  1302                     out.append("/* monitor enter */");

  1303                     smapper.popA();

  1304                     break;

  1305                 }

  1307                 case opc_monitorexit: {

  1308                     out.append("/* monitor exit */");

  1309                     smapper.popA();

  1310                     break;

  1311                 }

  1313                 case opc_wide:

  1314                     wide = true;

  1315                     break;

  1317                 default: {

  1318                     wide = false;

  1319                     emit(out, "throw 'unknown bytecode @1';",

  1320                          Integer.toString(c));

  1321                 }

  1322             }

  1323             if (debug(" //")) {

  1324                 for (int j = prev; j <= i; j++) {

  1325                     out.append(" ");

  1326                     final int cc = readUByte(byteCodes, j);

  1327                     out.append(Integer.toString(cc));

  1328                 }

  1329             }

  1330             out.append("\n");

  1331         }

  1332         if (previousTrap != null) {

  1333             generateCatch(previousTrap);

  1334         }

  1335         out.append("  }\n");

  1336         out.append("};");

  1337     }

  1339     private int generateIf(byte[] byteCodes, int i,

  1340                            final Variable v2, final Variable v1,

  1341                            final String test) throws IOException {

  1342         int indx = i + readIntArg(byteCodes, i);

  1343         out.append("if (").append(v1)

  1344            .append(' ').append(test).append(' ')

  1345            .append(v2).append(") { gt = " + indx)

  1346            .append("; continue; }");

  1347         return i + 2;

  1348     }

  1350     private int readIntArg(byte[] byteCodes, int offsetInstruction) {

  1351         final int indxHi = byteCodes[offsetInstruction + 1] << 8;

  1352         final int indxLo = byteCodes[offsetInstruction + 2];

  1353         return (indxHi & 0xffffff00) | (indxLo & 0xff);

  1354     }

  1355     private int readInt4(byte[] byteCodes, int offset) {

  1356         final int d = byteCodes[offset + 0] << 24;

  1357         final int c = byteCodes[offset + 1] << 16;

  1358         final int b = byteCodes[offset + 2] << 8;

  1359         final int a = byteCodes[offset + 3];

  1360         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1361     }

  1362     private int readUByte(byte[] byteCodes, int offset) {

  1363         return byteCodes[offset] & 0xff;

  1364     }

  1366     private int readUShort(byte[] byteCodes, int offset) {

  1367         return ((byteCodes[offset] & 0xff) << 8)

  1368                     | (byteCodes[offset + 1] & 0xff);

  1369     }

  1371     private int readShort(byte[] byteCodes, int offset) {

  1372         return (byteCodes[offset] << 8)

  1373                     | (byteCodes[offset + 1] & 0xff);

  1374     }

  1376     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1377         int i = 0;

  1378         Boolean count = null;

  1379         boolean array = false;

  1380         sig.append("__");

  1381         int firstPos = sig.length();

  1382         while (i < descriptor.length()) {

  1383             char ch = descriptor.charAt(i++);

  1384             switch (ch) {

  1385                 case '(':

  1386                     count = true;

  1387                     continue;

  1388                 case ')':

  1389                     count = false;

  1390                     continue;

  1391                 case 'B':

  1392                 case 'C':

  1393                 case 'D':

  1394                 case 'F':

  1395                 case 'I':

  1396                 case 'J':

  1397                 case 'S':

  1398                 case 'Z':

  1399                     if (count) {

  1400                         if (array) {

  1401                             sig.append("_3");

  1402                         }

  1403                         sig.append(ch);

  1404                         if (ch == 'J' || ch == 'D') {

  1405                             cnt.append('1');

  1406                         } else {

  1407                             cnt.append('0');

  1408                         }

  1409                     } else {

  1410                         sig.insert(firstPos, ch);

  1411                         if (array) {

  1412                             returnType[0] = '[';

  1413                             sig.insert(firstPos, "_3");

  1414                         } else {

  1415                             returnType[0] = ch;

  1416                         }

  1417                     }

  1418                     array = false;

  1419                     continue;

  1420                 case 'V':

  1421                     assert !count;

  1422                     returnType[0] = 'V';

  1423                     sig.insert(firstPos, 'V');

  1424                     continue;

  1425                 case 'L':

  1426                     int next = descriptor.indexOf(';', i);

  1427                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1428                     if (count) {

  1429                         if (array) {

  1430                             sig.append("_3");

  1431                         }

  1432                         sig.append(realSig);

  1433                         cnt.append('0');

  1434                     } else {

  1435                         sig.insert(firstPos, realSig);

  1436                         if (array) {

  1437                             sig.insert(firstPos, "_3");

  1438                         }

  1439                         returnType[0] = 'L';

  1440                     }

  1441                     i = next + 1;

  1442                     array = false;

  1443                     continue;

  1444                 case '[':

  1445                     array = true;

  1446                     continue;

  1447                 default:

  1448                     throw new IllegalStateException("Invalid char: " + ch);

  1449             }

  1450         }

  1451     }

  1453     static String mangleSig(String sig) {

  1454         return mangleSig(sig, 0, sig.length());

  1455     }

  1457     private static String mangleSig(String txt, int first, int last) {

  1458         StringBuilder sb = new StringBuilder();

  1459         for (int i = first; i < last; i++) {

  1460             final char ch = txt.charAt(i);

  1461             switch (ch) {

  1462                 case '/': sb.append('_'); break;

  1463                 case '_': sb.append("_1"); break;

  1464                 case ';': sb.append("_2"); break;

  1465                 case '[': sb.append("_3"); break;

  1466                 default: sb.append(ch); break;

  1467             }

  1468         }

  1469         return sb.toString();

  1470     }

  1472     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1473         StringBuilder name = new StringBuilder();

  1474         if ("<init>".equals(m.getName())) { // NOI18N

  1475             name.append("cons"); // NOI18N

  1476         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1477             name.append("class"); // NOI18N

  1478         } else {

  1479             name.append(m.getName());

  1480         }

  1482         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1483         return name.toString();

  1484     }

  1486     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1487         StringBuilder name = new StringBuilder();

  1488         String descr = mi[2];//mi.getDescriptor();

  1489         String nm= mi[1];

  1490         if ("<init>".equals(nm)) { // NOI18N

  1491             name.append("cons"); // NOI18N

  1492         } else {

  1493             name.append(nm);

  1494         }

  1495         countArgs(descr, returnType, name, cnt);

  1496         return name.toString();

  1497     }

  1499     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1500     throws IOException {

  1501         int methodIndex = readIntArg(byteCodes, i);

  1502         String[] mi = jc.getFieldInfoName(methodIndex);

  1503         char[] returnType = { 'V' };

  1504         StringBuilder cnt = new StringBuilder();

  1505         String mn = findMethodName(mi, cnt, returnType);

  1507         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1508         final Variable[] vars = new Variable[numArguments];

  1510         for (int j = numArguments - 1; j >= 0; --j) {

  1511             vars[j] = mapper.pop();

  1512         }

  1514         if (returnType[0] != 'V') {

  1515             out.append("var ")

  1516                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1517                .append(" = ");

  1518         }

  1520         final String in = mi[0];

  1521         out.append(accessClass(in.replace('/', '_')));

  1522         out.append("(false).");

  1523         if (mn.startsWith("cons_")) {

  1524             out.append("constructor.");

  1525         }

  1526         out.append(mn);

  1527         if (isStatic) {

  1528             out.append('(');

  1529         } else {

  1530             out.append(".call(");

  1531         }

  1532         if (numArguments > 0) {

  1533             out.append(vars[0]);

  1534             for (int j = 1; j < numArguments; ++j) {

  1535                 out.append(", ");

  1536                 out.append(vars[j]);

  1537             }

  1538         }

  1539         out.append(");");

  1540         i += 2;

  1541         addReference(in);

  1542         return i;

  1543     }

  1544     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1545     throws IOException {

  1546         int methodIndex = readIntArg(byteCodes, i);

  1547         String[] mi = jc.getFieldInfoName(methodIndex);

  1548         char[] returnType = { 'V' };

  1549         StringBuilder cnt = new StringBuilder();

  1550         String mn = findMethodName(mi, cnt, returnType);

  1552         final int numArguments = cnt.length() + 1;

  1553         final Variable[] vars = new Variable[numArguments];

  1555         for (int j = numArguments - 1; j >= 0; --j) {

  1556             vars[j] = mapper.pop();

  1557         }

  1559         if (returnType[0] != 'V') {

  1560             out.append("var ")

  1561                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1562                .append(" = ");

  1563         }

  1565         out.append(vars[0]).append('.');

  1566         out.append(mn);

  1567         out.append('(');

  1568         String sep = "";

  1569         for (int j = 1; j < numArguments; ++j) {

  1570             out.append(sep);

  1571             out.append(vars[j]);

  1572             sep = ", ";

  1573         }

  1574         out.append(");");

  1575         i += 2;

  1576         return i;

  1577     }

  1579     private void addReference(String cn) throws IOException {

  1580         if (requireReference(cn)) {

  1581             debug(" /* needs " + cn + " */");

  1582         }

  1583     }

  1585     private void outType(String d, StringBuilder out) {

  1586         int arr = 0;

  1587         while (d.charAt(0) == '[') {

  1588             out.append('A');

  1589             d = d.substring(1);

  1590         }

  1591         if (d.charAt(0) == 'L') {

  1592             assert d.charAt(d.length() - 1) == ';';

  1593             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1594         } else {

  1595             out.append(d);

  1596         }

  1597     }

  1599     private String encodeConstant(int entryIndex) throws IOException {

  1600         String[] classRef = { null };

  1601         String s = jc.stringValue(entryIndex, classRef);

  1602         if (classRef[0] != null) {

  1603             if (classRef[0].startsWith("[")) {

  1604                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1605             } else {

  1606                 addReference(classRef[0]);

  1607                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1608             }

  1609         }

  1610         return s;

  1611     }

  1613     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1614         byte[] arr = m.findAnnotationData(true);

  1615         if (arr == null) {

  1616             return null;

  1617         }

  1618         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1619         class P extends AnnotationParser {

  1620             public P() {

  1621                 super(false, true);

  1622             }

  1624             int cnt;

  1625             String[] args = new String[30];

  1626             String body;

  1628             @Override

  1629             protected void visitAttr(String type, String attr, String at, String value) {

  1630                 if (type.equals(jvmType)) {

  1631                     if ("body".equals(attr)) {

  1632                         body = value;

  1633                     } else if ("args".equals(attr)) {

  1634                         args[cnt++] = value;

  1635                     } else {

  1636                         throw new IllegalArgumentException(attr);

  1637                     }

  1638                 }

  1639             }

  1640         }

  1641         P p = new P();

  1642         p.parse(arr, jc);

  1643         if (p.body == null) {

  1644             return null;

  1645         }

  1646         StringBuilder cnt = new StringBuilder();

  1647         final String mn = findMethodName(m, cnt);

  1648         out.append(prefix).append(mn);

  1649         out.append(" = function(");

  1650         String space = "";

  1651         int index = 0;

  1652         for (int i = 0; i < cnt.length(); i++) {

  1653             out.append(space);

  1654             space = outputArg(out, p.args, index);

  1655             index++;

  1656         }

  1657         out.append(") {").append("\n");

  1658         out.append(p.body);

  1659         out.append("\n}\n");

  1660         return mn;

  1661     }

  1662     private static String className(ClassData jc) {

  1663         //return jc.getName().getInternalName().replace('/', '_');

  1664         return jc.getClassName().replace('/', '_');

  1665     }

  1667     private static String[] findAnnotation(

  1668         byte[] arr, ClassData cd, final String className,

  1669         final String... attrNames

  1670     ) throws IOException {

  1671         if (arr == null) {

  1672             return null;

  1673         }

  1674         final String[] values = new String[attrNames.length];

  1675         final boolean[] found = { false };

  1676         final String jvmType = "L" + className.replace('.', '/') + ";";

  1677         AnnotationParser ap = new AnnotationParser(false, true) {

  1678             @Override

  1679             protected void visitAttr(String type, String attr, String at, String value) {

  1680                 if (type.equals(jvmType)) {

  1681                     found[0] = true;

  1682                     for (int i = 0; i < attrNames.length; i++) {

  1683                         if (attrNames[i].equals(attr)) {

  1684                             values[i] = value;

  1685                         }

  1686                     }

  1687                 }

  1688             }

  1690         };

  1691         ap.parse(arr, cd);

  1692         return found[0] ? values : null;

  1693     }

  1695     private CharSequence initField(FieldData v) {

  1696         final String is = v.getInternalSig();

  1697         if (is.length() == 1) {

  1698             switch (is.charAt(0)) {

  1699                 case 'S':

  1700                 case 'J':

  1701                 case 'B':

  1702                 case 'Z':

  1703                 case 'C':

  1704                 case 'I': return " = 0;";

  1705                 case 'F':

  1706                 case 'D': return " = 0.0;";

  1707                 default:

  1708                     throw new IllegalStateException(is);

  1709             }

  1710         }

  1711         return " = null;";

  1712     }

  1714     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1715         AnnotationParser ap = new AnnotationParser(true, false) {

  1716             int[] cnt = new int[32];

  1717             int depth;

  1719             @Override

  1720             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1721                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1722                 requireReference(slashType);

  1724                 if (cnt[depth]++ > 0) {

  1725                     out.append(",");

  1726                 }

  1727                 if (top) {

  1728                     out.append('"').append(attrType).append("\" : ");

  1729                 }

  1730                 out.append("{\n");

  1731                 cnt[++depth] = 0;

  1732             }

  1734             @Override

  1735             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1736                 out.append("\n}\n");

  1737                 depth--;

  1738             }

  1740             @Override

  1741             protected void visitValueStart(String attrName, char type) throws IOException {

  1742                 if (cnt[depth]++ > 0) {

  1743                     out.append(",\n");

  1744                 }

  1745                 cnt[++depth] = 0;

  1746                 if (attrName != null) {

  1747                     out.append(attrName).append(" : ");

  1748                 }

  1749                 if (type == '[') {

  1750                     out.append("[");

  1751                 }

  1752             }

  1754             @Override

  1755             protected void visitValueEnd(String attrName, char type) throws IOException {

  1756                 if (type == '[') {

  1757                     out.append("]");

  1758                 }

  1759                 depth--;

  1760             }

  1762             @Override

  1763             protected void visitAttr(String type, String attr, String attrType, String value)

  1764             throws IOException {

  1765                 if (attr == null && value == null) {

  1766                     return;

  1767                 }

  1768                 out.append(value);

  1769             }

  1771             @Override

  1772             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1773             throws IOException {

  1774                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1775                 requireReference(slashType);

  1777                 out.append(accessClass(slashType.replace('/', '_')))

  1778                    .append("(false).constructor.").append(value);

  1779             }

  1780         };

  1781         ap.parse(data, cd);

  1782     }

  1784     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1785         final String name = args[indx];

  1786         if (name == null) {

  1787             return "";

  1788         }

  1789         if (name.contains(",")) {

  1790             throw new IOException("Wrong parameter with ',': " + name);

  1791         }

  1792         out.append(name);

  1793         return ",";

  1794     }

  1796     private static void emit(final Appendable out,

  1797                              final String format,

  1798                              final CharSequence... params) throws IOException {

  1799         final int length = format.length();

  1801         int processed = 0;

  1802         int paramOffset = format.indexOf('@');

  1803         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1804             final char paramChar = format.charAt(paramOffset + 1);

  1805             if ((paramChar >= '1') && (paramChar <= '9')) {

  1806                 final int paramIndex = paramChar - '0' - 1;

  1808                 out.append(format, processed, paramOffset);

  1809                 out.append(params[paramIndex]);

  1811                 ++paramOffset;

  1812                 processed = paramOffset + 1;

  1813             }

  1815             paramOffset = format.indexOf('@', paramOffset + 1);

  1816         }

  1818         out.append(format, processed, length);

  1819     }

  1821     private void generateCatch(TrapData[] traps) throws IOException {

  1822         out.append("} catch (e) {\n");

  1823         int finallyPC = -1;

  1824         for (TrapData e : traps) {

  1825             if (e == null) {

  1826                 break;

  1827             }

  1828             if (e.catch_cpx != 0) { //not finally

  1829                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1830                 addReference(classInternalName);

  1831                 if ("java/lang/Throwable".equals(classInternalName)) {

  1832                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1833                     out.append("  var stA0 = e;");

  1834                     out.append("} else {");

  1835                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1836                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1837                     out.append("}");

  1838                     out.append("gt=" + e.handler_pc + "; continue;");

  1839                 } else {

  1840                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1841                     out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");

  1842                     out.append("}\n");

  1843                 }

  1844             } else {

  1845                 finallyPC = e.handler_pc;

  1846             }

  1847         }

  1848         if (finallyPC == -1) {

  1849             out.append("throw e;");

  1850         } else {

  1851             out.append("gt=" + finallyPC + "; var stA0 = e; continue;");

  1852         }

  1853         out.append("\n}");

  1854     }

  1855 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Mon, 04 Mar 2013 19:20:40 +0100
changeset 810	9eb750594b15
parent 807	e93506e603ad
child 834	b0b23e5ebf9d
permissions	-rw-r--r--