hg/bck2brwsr: vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@26a86cc00224

     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 org.apidesign.bck2brwsr.core.JavaScriptBody;

    23 import org.apidesign.javap.AnnotationParser;

    24 import org.apidesign.javap.ClassData;

    25 import org.apidesign.javap.FieldData;

    26 import org.apidesign.javap.MethodData;

    27 import org.apidesign.javap.StackMapIterator;

    28 import static org.apidesign.javap.RuntimeConstants.*;

    29 import org.apidesign.javap.TrapData;

    30 import org.apidesign.javap.TrapDataIterator;

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

    33  *

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

    35  */

    36 abstract class ByteCodeToJavaScript {

    37     private ClassData jc;

    38     final Appendable out;

    40     protected ByteCodeToJavaScript(Appendable out) {

    41         this.out = out;

    42     }

    44     /* Collects additional required resources.

    45      *

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

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

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

    49      */

    50     protected abstract boolean requireReference(String internalClassName);

    52     /*

    53      * @param resourcePath name of resources to read

    54      */

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

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

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

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

    60      *

    61      * @param className suggested name of the class

    62      */

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

    64         return className + " = ";

    65     }

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

    67         return classOperation;

    68     }

    70     /** Prints out a debug message.

    71      *

    72      * @param msg the message

    73      * @return true if the message has been printed

    74      * @throws IOException

    75      */

    76     boolean debug(String msg) throws IOException {

    77         out.append(msg);

    78         return true;

    79     }

    81     /**

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

    83      *

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

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

    86      *

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

    88      */

    90     public String compile(InputStream classFile) throws IOException {

    91         this.jc = new ClassData(classFile);

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

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

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

    95             );

    96         }

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

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

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

   100             "resource", "processByteCode"

   101         );

   102         if (arr != null) {

   103             requireScript(arr[0]);

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

   105                 return null;

   106             }

   107         }

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

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

   110             "container", "prototype"

   111         );

   112         StringArray toInitilize = new StringArray();

   113         final String className = className(jc);

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

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

   116         out.append("\n  if (!CLS.prototype.$instOf_").append(className).append(") {");

   117         if (proto == null) {

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

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

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

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

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

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

   124         } else {

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

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

   127                 proto[0] = "p";

   128             }

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

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

   131         }

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

   133             if (v.isStatic()) {

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

   135             } else {

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

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

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

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

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

   141                    .append("; };");

   142             }

   143         }

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

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

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

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

   148                 "name", "value"

   149             );

   150             if (only != null) {

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

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

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

   154                 }

   155                 continue;

   156             }

   157             String prefix;

   158             String mn;

   159             if (m.isStatic()) {

   160                 prefix = "\n    c.";

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

   162             } else {

   163                 if (m.isConstructor()) {

   164                     prefix = "\n    CLS.";

   165                     mn = generateInstanceMethod(prefix, m);

   166                 } else {

   167                     prefix = "\n    c.";

   168                     mn = generateInstanceMethod(prefix, m);

   169                 }

   170             }

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

   172             if (runAnno != null) {

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

   174                 generateAnno(jc, out, runAnno);

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

   176             }

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

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

   179         }

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

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

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

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

   184         }

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

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

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

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

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

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

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

   192         if (classAnno != null) {

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

   194             generateAnno(jc, out, classAnno);

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

   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 sb.toString();

   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 += @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 -= @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 *= @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 = Math.floor(@1 / @2);",

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

   559                     break;

   560                 case opc_ldiv:

   561                     emit(out, "@1 = Math.floor(@1 / @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 %= @2;", smapper.getI(1), smapper.popI());

   572                     break;

   573                 case opc_lrem:

   574                     emit(out, "@1 %= @2;", smapper.getL(1), smapper.popL());

   575                     break;

   576                 case opc_frem:

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

   578                     break;

   579                 case opc_drem:

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

   581                     break;

   582                 case opc_iand:

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

   584                     break;

   585                 case opc_land:

   586                     emit(out, "@1 &= @2;", smapper.getL(1), smapper.popL());

   587                     break;

   588                 case opc_ior:

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

   590                     break;

   591                 case opc_lor:

   592                     emit(out, "@1 |= @2;", smapper.getL(1), smapper.popL());

   593                     break;

   594                 case opc_ixor:

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

   596                     break;

   597                 case opc_lxor:

   598                     emit(out, "@1 ^= @2;", smapper.getL(1), smapper.popL());

   599                     break;

   600                 case opc_ineg:

   601                     emit(out, "@1 = -@1;", smapper.getI(0));

   602                     break;

   603                 case opc_lneg:

   604                     emit(out, "@1 = -@1;", smapper.getL(0));

   605                     break;

   606                 case opc_fneg:

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

   608                     break;

   609                 case opc_dneg:

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

   611                     break;

   612                 case opc_ishl:

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

   614                     break;

   615                 case opc_lshl:

   616                     emit(out, "@1 <<= @2;", smapper.getL(1), smapper.popI());

   617                     break;

   618                 case opc_ishr:

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

   620                     break;

   621                 case opc_lshr:

   622                     emit(out, "@1 >>= @2;", smapper.getL(1), smapper.popI());

   623                     break;

   624                 case opc_iushr:

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

   626                     break;

   627                 case opc_lushr:

   628                     emit(out, "@1 >>>= @2;", smapper.getL(1), smapper.popI());

   629                     break;

   630                 case opc_iinc: {

   631                     ++i;

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

   633                                              : readUByte(byteCodes, i);

   634                     ++i;

   635                     final int incrBy = wide ? readIntArg(byteCodes, i++)

   636                                             : byteCodes[i];

   637                     wide = false;

   638                     if (incrBy == 1) {

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

   640                     } else {

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

   642                              lmapper.getI(varIndx),

   643                              Integer.toString(incrBy));

   644                     }

   645                     break;

   646                 }

   647                 case opc_return:

   648                     emit(out, "return;");

   649                     break;

   650                 case opc_ireturn:

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

   652                     break;

   653                 case opc_lreturn:

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

   655                     break;

   656                 case opc_freturn:

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

   658                     break;

   659                 case opc_dreturn:

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

   661                     break;

   662                 case opc_areturn:

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

   664                     break;

   665                 case opc_i2l:

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

   667                     break;

   668                 case opc_i2f:

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

   670                     break;

   671                 case opc_i2d:

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

   673                     break;

   674                 case opc_l2i:

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

   676                     break;

   677                     // max int check?

   678                 case opc_l2f:

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

   680                     break;

   681                 case opc_l2d:

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

   683                     break;

   684                 case opc_f2d:

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

   686                     break;

   687                 case opc_d2f:

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

   689                     break;

   690                 case opc_f2i:

   691                     emit(out, "var @2 = Math.floor(@1);",

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

   693                     break;

   694                 case opc_f2l:

   695                     emit(out, "var @2 = Math.floor(@1);",

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

   697                     break;

   698                 case opc_d2i:

   699                     emit(out, "var @2 = Math.floor(@1);",

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

   701                     break;

   702                 case opc_d2l:

   703                     emit(out, "var @2 = Math.floor(@1);",

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

   705                     break;

   706                 case opc_i2b:

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

   708                     break;

   709                 case opc_i2c:

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

   711                     break;

   712                 case opc_i2s:

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

   714                     break;

   715                 case opc_aconst_null:

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

   717                     break;

   718                 case opc_iconst_m1:

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

   720                     break;

   721                 case opc_iconst_0:

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

   723                     break;

   724                 case opc_dconst_0:

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

   726                     break;

   727                 case opc_lconst_0:

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

   729                     break;

   730                 case opc_fconst_0:

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

   732                     break;

   733                 case opc_iconst_1:

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

   735                     break;

   736                 case opc_lconst_1:

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

   738                     break;

   739                 case opc_fconst_1:

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

   741                     break;

   742                 case opc_dconst_1:

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

   744                     break;

   745                 case opc_iconst_2:

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

   747                     break;

   748                 case opc_fconst_2:

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

   750                     break;

   751                 case opc_iconst_3:

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

   753                     break;

   754                 case opc_iconst_4:

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

   756                     break;

   757                 case opc_iconst_5:

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

   759                     break;

   760                 case opc_ldc: {

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

   762                     String v = encodeConstant(indx);

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

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

   765                     break;

   766                 }

   767                 case opc_ldc_w:

   768                 case opc_ldc2_w: {

   769                     int indx = readIntArg(byteCodes, i);

   770                     i += 2;

   771                     String v = encodeConstant(indx);

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

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

   774                     break;

   775                 }

   776                 case opc_lcmp:

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

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

   779                     break;

   780                 case opc_fcmpl:

   781                 case opc_fcmpg:

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

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

   784                     break;

   785                 case opc_dcmpl:

   786                 case opc_dcmpg:

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

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

   789                     break;

   790                 case opc_if_acmpeq:

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

   792                                    "===");

   793                     break;

   794                 case opc_if_acmpne:

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

   796                                    "!=");

   797                     break;

   798                 case opc_if_icmpeq:

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

   800                                    "==");

   801                     break;

   802                 case opc_ifeq: {

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

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

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

   806                     i += 2;

   807                     break;

   808                 }

   809                 case opc_ifne: {

   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_iflt: {

   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_ifle: {

   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_ifgt: {

   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_ifge: {

   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_ifnonnull: {

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

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

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

   848                     i += 2;

   849                     break;

   850                 }

   851                 case opc_ifnull: {

   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_if_icmpne:

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

   860                                    "!=");

   861                     break;

   862                 case opc_if_icmplt:

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

   864                                    "<");

   865                     break;

   866                 case opc_if_icmple:

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

   868                                    "<=");

   869                     break;

   870                 case opc_if_icmpgt:

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

   872                                    ">");

   873                     break;

   874                 case opc_if_icmpge:

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

   876                                    ">=");

   877                     break;

   878                 case opc_goto: {

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

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

   881                     i += 2;

   882                     break;

   883                 }

   884                 case opc_lookupswitch: {

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

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

   887                     table += 4;

   888                     int n = readInt4(byteCodes, table);

   889                     table += 4;

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

   891                     while (n-- > 0) {

   892                         int cnstnt = readInt4(byteCodes, table);

   893                         table += 4;

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

   895                         table += 4;

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

   897                     }

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

   899                     i = table - 1;

   900                     break;

   901                 }

   902                 case opc_tableswitch: {

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

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

   905                     table += 4;

   906                     int low = readInt4(byteCodes, table);

   907                     table += 4;

   908                     int high = readInt4(byteCodes, table);

   909                     table += 4;

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

   911                     while (low <= high) {

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

   913                         table += 4;

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

   915                         low++;

   916                     }

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

   918                     i = table - 1;

   919                     break;

   920                 }

   921                 case opc_invokeinterface: {

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

   923                     break;

   924                 }

   925                 case opc_invokevirtual:

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

   927                     break;

   928                 case opc_invokespecial:

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

   930                     break;

   931                 case opc_invokestatic:

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

   933                     break;

   934                 case opc_new: {

   935                     int indx = readIntArg(byteCodes, i);

   936                     String ci = jc.getClassName(indx);

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

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

   939                     addReference(ci);

   940                     i += 2;

   941                     break;

   942                 }

   943                 case opc_newarray:

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

   945                     String jvmType;

   946                     switch (atype) {

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

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

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

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

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

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

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

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

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

   956                     }

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

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

   959                     break;

   960                 case opc_anewarray: {

   961                     int type = readIntArg(byteCodes, i);

   962                     i += 2;

   963                     String typeName = jc.getClassName(type);

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

   965                         typeName = "[" + typeName;

   966                     } else {

   967                         typeName = "[L" + typeName + ";";

   968                     }

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

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

   971                     break;

   972                 }

   973                 case opc_multianewarray: {

   974                     int type = readIntArg(byteCodes, i);

   975                     i += 2;

   976                     String typeName = jc.getClassName(type);

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

   978                     StringBuilder dims = new StringBuilder();

   979                     dims.append('[');

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

   981                         if (d != 0) {

   982                             dims.append(",");

   983                         }

   984                         dims.append(smapper.popI());

   985                     }

   986                     dims.append(']');

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

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

   989                     break;

   990                 }

   991                 case opc_arraylength:

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

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

   994                     break;

   995                 case opc_lastore:

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

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

   998                     break;

   999                 case opc_fastore:

  1000                     emit(out, "@3.at(@2, @1);",

  1001                          smapper.popF(), smapper.popI(), smapper.popA());

  1002                     break;

  1003                 case opc_dastore:

  1004                     emit(out, "@3.at(@2, @1);",

  1005                          smapper.popD(), smapper.popI(), smapper.popA());

  1006                     break;

  1007                 case opc_aastore:

  1008                     emit(out, "@3.at(@2, @1);",

  1009                          smapper.popA(), smapper.popI(), smapper.popA());

  1010                     break;

  1011                 case opc_iastore:

  1012                 case opc_bastore:

  1013                 case opc_castore:

  1014                 case opc_sastore:

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

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

  1017                     break;

  1018                 case opc_laload:

  1019                     emit(out, "var @3 = @2.at(@1);",

  1020                          smapper.popI(), smapper.popA(), smapper.pushL());

  1021                     break;

  1022                 case opc_faload:

  1023                     emit(out, "var @3 = @2.at(@1);",

  1024                          smapper.popI(), smapper.popA(), smapper.pushF());

  1025                     break;

  1026                 case opc_daload:

  1027                     emit(out, "var @3 = @2.at(@1);",

  1028                          smapper.popI(), smapper.popA(), smapper.pushD());

  1029                     break;

  1030                 case opc_aaload:

  1031                     emit(out, "var @3 = @2.at(@1);",

  1032                          smapper.popI(), smapper.popA(), smapper.pushA());

  1033                     break;

  1034                 case opc_iaload:

  1035                 case opc_baload:

  1036                 case opc_caload:

  1037                 case opc_saload:

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

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

  1040                     break;

  1041                 case opc_pop:

  1042                 case opc_pop2:

  1043                     smapper.pop(1);

  1044                     debug("/* pop */");

  1045                     break;

  1046                 case opc_dup: {

  1047                     final Variable v = smapper.get(0);

  1048                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1049                     break;

  1050                 }

  1051                 case opc_dup2: {

  1052                     final Variable vi1 = smapper.get(0);

  1054                     if (vi1.isCategory2()) {

  1055                         emit(out, "var @1 = @2;",

  1056                              smapper.pushT(vi1.getType()), vi1);

  1057                     } else {

  1058                         final Variable vi2 = smapper.get(1);

  1059                         emit(out, "var @1 = @2, @3 = @4;",

  1060                              smapper.pushT(vi2.getType()), vi2,

  1061                              smapper.pushT(vi1.getType()), vi1);

  1062                     }

  1063                     break;

  1064                 }

  1065                 case opc_dup_x1: {

  1066                     final Variable vi1 = smapper.pop();

  1067                     final Variable vi2 = smapper.pop();

  1068                     final Variable vo3 = smapper.pushT(vi1.getType());

  1069                     final Variable vo2 = smapper.pushT(vi2.getType());

  1070                     final Variable vo1 = smapper.pushT(vi1.getType());

  1072                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1073                          vo1, vi1, vo2, vi2, vo3, vo1);

  1074                     break;

  1075                 }

  1076                 case opc_dup2_x1: {

  1077                     final Variable vi1 = smapper.pop();

  1078                     final Variable vi2 = smapper.pop();

  1080                     if (vi1.isCategory2()) {

  1081                         final Variable vo3 = smapper.pushT(vi1.getType());

  1082                         final Variable vo2 = smapper.pushT(vi2.getType());

  1083                         final Variable vo1 = smapper.pushT(vi1.getType());

  1085                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1086                              vo1, vi1, vo2, vi2, vo3, vo1);

  1087                     } else {

  1088                         final Variable vi3 = smapper.pop();

  1089                         final Variable vo5 = smapper.pushT(vi2.getType());

  1090                         final Variable vo4 = smapper.pushT(vi1.getType());

  1091                         final Variable vo3 = smapper.pushT(vi3.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, vi3);

  1097                         emit(out, " @1 = @2, @3 = @4;",

  1098                              vo4, vo1, vo5, vo2);

  1099                     }

  1100                     break;

  1101                 }

  1102                 case opc_dup_x2: {

  1103                     final Variable vi1 = smapper.pop();

  1104                     final Variable vi2 = smapper.pop();

  1106                     if (vi2.isCategory2()) {

  1107                         final Variable vo3 = smapper.pushT(vi1.getType());

  1108                         final Variable vo2 = smapper.pushT(vi2.getType());

  1109                         final Variable vo1 = smapper.pushT(vi1.getType());

  1111                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1112                              vo1, vi1, vo2, vi2, vo3, vo1);

  1113                     } else {

  1114                         final Variable vi3 = smapper.pop();

  1115                         final Variable vo4 = smapper.pushT(vi1.getType());

  1116                         final Variable vo3 = smapper.pushT(vi3.getType());

  1117                         final Variable vo2 = smapper.pushT(vi2.getType());

  1118                         final Variable vo1 = smapper.pushT(vi1.getType());

  1120                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1121                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1122                     }

  1123                     break;

  1124                 }

  1125                 case opc_dup2_x2: {

  1126                     final Variable vi1 = smapper.pop();

  1127                     final Variable vi2 = smapper.pop();

  1129                     if (vi1.isCategory2()) {

  1130                         if (vi2.isCategory2()) {

  1131                             final Variable vo3 = smapper.pushT(vi1.getType());

  1132                             final Variable vo2 = smapper.pushT(vi2.getType());

  1133                             final Variable vo1 = smapper.pushT(vi1.getType());

  1135                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1136                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1137                         } else {

  1138                             final Variable vi3 = smapper.pop();

  1139                             final Variable vo4 = smapper.pushT(vi1.getType());

  1140                             final Variable vo3 = smapper.pushT(vi3.getType());

  1141                             final Variable vo2 = smapper.pushT(vi2.getType());

  1142                             final Variable vo1 = smapper.pushT(vi1.getType());

  1144                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1145                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1146                         }

  1147                     } else {

  1148                         final Variable vi3 = smapper.pop();

  1150                         if (vi3.isCategory2()) {

  1151                             final Variable vo5 = smapper.pushT(vi2.getType());

  1152                             final Variable vo4 = smapper.pushT(vi1.getType());

  1153                             final Variable vo3 = smapper.pushT(vi3.getType());

  1154                             final Variable vo2 = smapper.pushT(vi2.getType());

  1155                             final Variable vo1 = smapper.pushT(vi1.getType());

  1157                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1158                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1159                             emit(out, " @1 = @2, @3 = @4;",

  1160                                  vo4, vo1, vo5, vo2);

  1161                         } else {

  1162                             final Variable vi4 = smapper.pop();

  1163                             final Variable vo6 = smapper.pushT(vi2.getType());

  1164                             final Variable vo5 = smapper.pushT(vi1.getType());

  1165                             final Variable vo4 = smapper.pushT(vi4.getType());

  1166                             final Variable vo3 = smapper.pushT(vi3.getType());

  1167                             final Variable vo2 = smapper.pushT(vi2.getType());

  1168                             final Variable vo1 = smapper.pushT(vi1.getType());

  1170                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1171                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1172                             emit(out, " @1 = @2, @3 = @4;",

  1173                                  vo5, vo1, vo6, vo2);

  1174                         }

  1175                     }

  1176                     break;

  1177                 }

  1178                 case opc_swap: {

  1179                     final Variable vi1 = smapper.get(0);

  1180                     final Variable vi2 = smapper.get(1);

  1182                     if (vi1.getType() == vi2.getType()) {

  1183                         final Variable tmp = smapper.pushT(vi1.getType());

  1185                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1186                              tmp, vi1, vi2);

  1187                         smapper.pop(1);

  1188                     } else {

  1189                         smapper.pop(2);

  1190                         smapper.pushT(vi1.getType());

  1191                         smapper.pushT(vi2.getType());

  1192                     }

  1193                     break;

  1194                 }

  1195                 case opc_bipush:

  1196                     emit(out, "var @1 = @2;",

  1197                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1198                     break;

  1199                 case opc_sipush:

  1200                     emit(out, "var @1 = @2;",

  1201                          smapper.pushI(),

  1202                          Integer.toString(readIntArg(byteCodes, i)));

  1203                     i += 2;

  1204                     break;

  1205                 case opc_getfield: {

  1206                     int indx = readIntArg(byteCodes, i);

  1207                     String[] fi = jc.getFieldInfoName(indx);

  1208                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1209                     final String mangleClass = mangleSig(fi[0]);

  1210                     final String mangleClassAccess = accessClass(mangleClass);

  1211                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1212                          smapper.popA(),

  1213                          smapper.pushT(type), fi[1], mangleClassAccess

  1214                     );

  1215                     i += 2;

  1216                     break;

  1217                 }

  1218                 case opc_putfield: {

  1219                     int indx = readIntArg(byteCodes, i);

  1220                     String[] fi = jc.getFieldInfoName(indx);

  1221                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1222                     final String mangleClass = mangleSig(fi[0]);

  1223                     final String mangleClassAccess = accessClass(mangleClass);

  1224                     emit(out, "@4(false)._@3.call(@2, @1);",

  1225                          smapper.popT(type),

  1226                          smapper.popA(), fi[1],

  1227                          mangleClassAccess

  1228                     );

  1229                     i += 2;

  1230                     break;

  1231                 }

  1232                 case opc_getstatic: {

  1233                     int indx = readIntArg(byteCodes, i);

  1234                     String[] fi = jc.getFieldInfoName(indx);

  1235                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1236                     emit(out, "var @1 = @2(false).constructor.@3;",

  1237                          smapper.pushT(type),

  1238                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1239                     i += 2;

  1240                     addReference(fi[0]);

  1241                     break;

  1242                 }

  1243                 case opc_putstatic: {

  1244                     int indx = readIntArg(byteCodes, i);

  1245                     String[] fi = jc.getFieldInfoName(indx);

  1246                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1247                     emit(out, "@1(false).constructor.@2 = @3;",

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

  1249                          smapper.popT(type));

  1250                     i += 2;

  1251                     addReference(fi[0]);

  1252                     break;

  1253                 }

  1254                 case opc_checkcast: {

  1255                     int indx = readIntArg(byteCodes, i);

  1256                     final String type = jc.getClassName(indx);

  1257                     if (!type.startsWith("[")) {

  1258                         emit(out,

  1259                              "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1260                              smapper.getA(0), type.replace('/', '_'));

  1261                     } else {

  1262                         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);",

  1263                              smapper.getA(0), type

  1264                         );

  1265                     }

  1266                     i += 2;

  1267                     break;

  1268                 }

  1269                 case opc_instanceof: {

  1270                     int indx = readIntArg(byteCodes, i);

  1271                     final String type = jc.getClassName(indx);

  1272                     if (!type.startsWith("[")) {

  1273                         emit(out, "var @2 = @1.$instOf_@3 ? 1 : 0;",

  1274                              smapper.popA(), smapper.pushI(),

  1275                              type.replace('/', '_'));

  1276                     } else {

  1277                         emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1278                             smapper.popA(), smapper.pushI(),

  1279                             type

  1280                         );

  1281                     }

  1282                     i += 2;

  1283                     break;

  1284                 }

  1285                 case opc_athrow: {

  1286                     final Variable v = smapper.popA();

  1287                     smapper.clear();

  1289                     emit(out, "{ var @1 = @2; throw @2; }",

  1290                          smapper.pushA(), v);

  1291                     break;

  1292                 }

  1294                 case opc_monitorenter: {

  1295                     out.append("/* monitor enter */");

  1296                     smapper.popA();

  1297                     break;

  1298                 }

  1300                 case opc_monitorexit: {

  1301                     out.append("/* monitor exit */");

  1302                     smapper.popA();

  1303                     break;

  1304                 }

  1306                 case opc_wide:

  1307                     wide = true;

  1308                     break;

  1310                 default: {

  1311                     wide = false;

  1312                     emit(out, "throw 'unknown bytecode @1';",

  1313                          Integer.toString(c));

  1314                 }

  1315             }

  1316             if (debug(" //")) {

  1317                 for (int j = prev; j <= i; j++) {

  1318                     out.append(" ");

  1319                     final int cc = readUByte(byteCodes, j);

  1320                     out.append(Integer.toString(cc));

  1321                 }

  1322             }

  1323             out.append("\n");

  1324         }

  1325         if (previousTrap != null) {

  1326             generateCatch(previousTrap);

  1327         }

  1328         out.append("  }\n");

  1329         out.append("};");

  1330     }

  1332     private int generateIf(byte[] byteCodes, int i,

  1333                            final Variable v2, final Variable v1,

  1334                            final String test) throws IOException {

  1335         int indx = i + readIntArg(byteCodes, i);

  1336         out.append("if (").append(v1)

  1337            .append(' ').append(test).append(' ')

  1338            .append(v2).append(") { gt = " + indx)

  1339            .append("; continue; }");

  1340         return i + 2;

  1341     }

  1343     private int readIntArg(byte[] byteCodes, int offsetInstruction) {

  1344         final int indxHi = byteCodes[offsetInstruction + 1] << 8;

  1345         final int indxLo = byteCodes[offsetInstruction + 2];

  1346         return (indxHi & 0xffffff00) | (indxLo & 0xff);

  1347     }

  1348     private int readInt4(byte[] byteCodes, int offsetInstruction) {

  1349         final int d = byteCodes[offsetInstruction + 0] << 24;

  1350         final int c = byteCodes[offsetInstruction + 1] << 16;

  1351         final int b = byteCodes[offsetInstruction + 2] << 8;

  1352         final int a = byteCodes[offsetInstruction + 3];

  1353         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1354     }

  1355     private int readUByte(byte[] byteCodes, int offsetInstruction) {

  1356         return byteCodes[offsetInstruction] & 0xff;

  1357     }

  1359     private int readUShort(byte[] byteCodes, int offsetInstruction) {

  1360         return ((byteCodes[offsetInstruction] & 0xff) << 8)

  1361                     | (byteCodes[offsetInstruction + 1] & 0xff);

  1362     }

  1364     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1365         int i = 0;

  1366         Boolean count = null;

  1367         boolean array = false;

  1368         sig.append("__");

  1369         int firstPos = sig.length();

  1370         while (i < descriptor.length()) {

  1371             char ch = descriptor.charAt(i++);

  1372             switch (ch) {

  1373                 case '(':

  1374                     count = true;

  1375                     continue;

  1376                 case ')':

  1377                     count = false;

  1378                     continue;

  1379                 case 'B':

  1380                 case 'C':

  1381                 case 'D':

  1382                 case 'F':

  1383                 case 'I':

  1384                 case 'J':

  1385                 case 'S':

  1386                 case 'Z':

  1387                     if (count) {

  1388                         if (array) {

  1389                             sig.append("_3");

  1390                         }

  1391                         sig.append(ch);

  1392                         if (ch == 'J' || ch == 'D') {

  1393                             cnt.append('1');

  1394                         } else {

  1395                             cnt.append('0');

  1396                         }

  1397                     } else {

  1398                         sig.insert(firstPos, ch);

  1399                         if (array) {

  1400                             returnType[0] = '[';

  1401                             sig.insert(firstPos, "_3");

  1402                         } else {

  1403                             returnType[0] = ch;

  1404                         }

  1405                     }

  1406                     array = false;

  1407                     continue;

  1408                 case 'V':

  1409                     assert !count;

  1410                     returnType[0] = 'V';

  1411                     sig.insert(firstPos, 'V');

  1412                     continue;

  1413                 case 'L':

  1414                     int next = descriptor.indexOf(';', i);

  1415                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1416                     if (count) {

  1417                         if (array) {

  1418                             sig.append("_3");

  1419                         }

  1420                         sig.append(realSig);

  1421                         cnt.append('0');

  1422                     } else {

  1423                         sig.insert(firstPos, realSig);

  1424                         if (array) {

  1425                             sig.insert(firstPos, "_3");

  1426                         }

  1427                         returnType[0] = 'L';

  1428                     }

  1429                     i = next + 1;

  1430                     array = false;

  1431                     continue;

  1432                 case '[':

  1433                     array = true;

  1434                     continue;

  1435                 default:

  1436                     throw new IllegalStateException("Invalid char: " + ch);

  1437             }

  1438         }

  1439     }

  1441     static String mangleSig(String sig) {

  1442         return mangleSig(sig, 0, sig.length());

  1443     }

  1445     private static String mangleSig(String txt, int first, int last) {

  1446         StringBuilder sb = new StringBuilder();

  1447         for (int i = first; i < last; i++) {

  1448             final char ch = txt.charAt(i);

  1449             switch (ch) {

  1450                 case '/': sb.append('_'); break;

  1451                 case '_': sb.append("_1"); break;

  1452                 case ';': sb.append("_2"); break;

  1453                 case '[': sb.append("_3"); break;

  1454                 default: sb.append(ch); break;

  1455             }

  1456         }

  1457         return sb.toString();

  1458     }

  1460     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1461         StringBuilder name = new StringBuilder();

  1462         if ("<init>".equals(m.getName())) { // NOI18N

  1463             name.append("cons"); // NOI18N

  1464         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1465             name.append("class"); // NOI18N

  1466         } else {

  1467             name.append(m.getName());

  1468         }

  1470         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1471         return name.toString();

  1472     }

  1474     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1475         StringBuilder name = new StringBuilder();

  1476         String descr = mi[2];//mi.getDescriptor();

  1477         String nm= mi[1];

  1478         if ("<init>".equals(nm)) { // NOI18N

  1479             name.append("cons"); // NOI18N

  1480         } else {

  1481             name.append(nm);

  1482         }

  1483         countArgs(descr, returnType, name, cnt);

  1484         return name.toString();

  1485     }

  1487     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1488     throws IOException {

  1489         int methodIndex = readIntArg(byteCodes, i);

  1490         String[] mi = jc.getFieldInfoName(methodIndex);

  1491         char[] returnType = { 'V' };

  1492         StringBuilder cnt = new StringBuilder();

  1493         String mn = findMethodName(mi, cnt, returnType);

  1495         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1496         final Variable[] vars = new Variable[numArguments];

  1498         for (int j = numArguments - 1; j >= 0; --j) {

  1499             vars[j] = mapper.pop();

  1500         }

  1502         if (returnType[0] != 'V') {

  1503             out.append("var ")

  1504                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1505                .append(" = ");

  1506         }

  1508         final String in = mi[0];

  1509         out.append(accessClass(in.replace('/', '_')));

  1510         out.append("(false).");

  1511         if (mn.startsWith("cons_")) {

  1512             out.append("constructor.");

  1513         }

  1514         out.append(mn);

  1515         if (isStatic) {

  1516             out.append('(');

  1517         } else {

  1518             out.append(".call(");

  1519         }

  1520         if (numArguments > 0) {

  1521             out.append(vars[0]);

  1522             for (int j = 1; j < numArguments; ++j) {

  1523                 out.append(", ");

  1524                 out.append(vars[j]);

  1525             }

  1526         }

  1527         out.append(");");

  1528         i += 2;

  1529         addReference(in);

  1530         return i;

  1531     }

  1532     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1533     throws IOException {

  1534         int methodIndex = readIntArg(byteCodes, i);

  1535         String[] mi = jc.getFieldInfoName(methodIndex);

  1536         char[] returnType = { 'V' };

  1537         StringBuilder cnt = new StringBuilder();

  1538         String mn = findMethodName(mi, cnt, returnType);

  1540         final int numArguments = cnt.length() + 1;

  1541         final Variable[] vars = new Variable[numArguments];

  1543         for (int j = numArguments - 1; j >= 0; --j) {

  1544             vars[j] = mapper.pop();

  1545         }

  1547         if (returnType[0] != 'V') {

  1548             out.append("var ")

  1549                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1550                .append(" = ");

  1551         }

  1553         out.append(vars[0]).append('.');

  1554         out.append(mn);

  1555         out.append('(');

  1556         String sep = "";

  1557         for (int j = 1; j < numArguments; ++j) {

  1558             out.append(sep);

  1559             out.append(vars[j]);

  1560             sep = ", ";

  1561         }

  1562         out.append(");");

  1563         i += 2;

  1564         return i;

  1565     }

  1567     private void addReference(String cn) throws IOException {

  1568         if (requireReference(cn)) {

  1569             debug(" /* needs " + cn + " */");

  1570         }

  1571     }

  1573     private void outType(String d, StringBuilder out) {

  1574         int arr = 0;

  1575         while (d.charAt(0) == '[') {

  1576             out.append('A');

  1577             d = d.substring(1);

  1578         }

  1579         if (d.charAt(0) == 'L') {

  1580             assert d.charAt(d.length() - 1) == ';';

  1581             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1582         } else {

  1583             out.append(d);

  1584         }

  1585     }

  1587     private String encodeConstant(int entryIndex) throws IOException {

  1588         String[] classRef = { null };

  1589         String s = jc.stringValue(entryIndex, classRef);

  1590         if (classRef[0] != null) {

  1591             if (classRef[0].startsWith("[")) {

  1592                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1593             } else {

  1594                 addReference(classRef[0]);

  1595                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1596             }

  1597         }

  1598         return s;

  1599     }

  1601     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1602         byte[] arr = m.findAnnotationData(true);

  1603         if (arr == null) {

  1604             return null;

  1605         }

  1606         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1607         class P extends AnnotationParser {

  1608             public P() {

  1609                 super(false, true);

  1610             }

  1612             int cnt;

  1613             String[] args = new String[30];

  1614             String body;

  1616             @Override

  1617             protected void visitAttr(String type, String attr, String at, String value) {

  1618                 if (type.equals(jvmType)) {

  1619                     if ("body".equals(attr)) {

  1620                         body = value;

  1621                     } else if ("args".equals(attr)) {

  1622                         args[cnt++] = value;

  1623                     } else {

  1624                         throw new IllegalArgumentException(attr);

  1625                     }

  1626                 }

  1627             }

  1628         }

  1629         P p = new P();

  1630         p.parse(arr, jc);

  1631         if (p.body == null) {

  1632             return null;

  1633         }

  1634         StringBuilder cnt = new StringBuilder();

  1635         final String mn = findMethodName(m, cnt);

  1636         out.append(prefix).append(mn);

  1637         out.append(" = function(");

  1638         String space = "";

  1639         int index = 0;

  1640         for (int i = 0; i < cnt.length(); i++) {

  1641             out.append(space);

  1642             space = outputArg(out, p.args, index);

  1643             index++;

  1644         }

  1645         out.append(") {").append("\n");

  1646         out.append(p.body);

  1647         out.append("\n}\n");

  1648         return mn;

  1649     }

  1650     private static String className(ClassData jc) {

  1651         //return jc.getName().getInternalName().replace('/', '_');

  1652         return jc.getClassName().replace('/', '_');

  1653     }

  1655     private static String[] findAnnotation(

  1656         byte[] arr, ClassData cd, final String className,

  1657         final String... attrNames

  1658     ) throws IOException {

  1659         if (arr == null) {

  1660             return null;

  1661         }

  1662         final String[] values = new String[attrNames.length];

  1663         final boolean[] found = { false };

  1664         final String jvmType = "L" + className.replace('.', '/') + ";";

  1665         AnnotationParser ap = new AnnotationParser(false, true) {

  1666             @Override

  1667             protected void visitAttr(String type, String attr, String at, String value) {

  1668                 if (type.equals(jvmType)) {

  1669                     found[0] = true;

  1670                     for (int i = 0; i < attrNames.length; i++) {

  1671                         if (attrNames[i].equals(attr)) {

  1672                             values[i] = value;

  1673                         }

  1674                     }

  1675                 }

  1676             }

  1678         };

  1679         ap.parse(arr, cd);

  1680         return found[0] ? values : null;

  1681     }

  1683     private CharSequence initField(FieldData v) {

  1684         final String is = v.getInternalSig();

  1685         if (is.length() == 1) {

  1686             switch (is.charAt(0)) {

  1687                 case 'S':

  1688                 case 'J':

  1689                 case 'B':

  1690                 case 'Z':

  1691                 case 'C':

  1692                 case 'I': return " = 0;";

  1693                 case 'F':

  1694                 case 'D': return " = 0.0;";

  1695                 default:

  1696                     throw new IllegalStateException(is);

  1697             }

  1698         }

  1699         return " = null;";

  1700     }

  1702     private static void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1703         AnnotationParser ap = new AnnotationParser(true, false) {

  1704             int[] cnt = new int[32];

  1705             int depth;

  1707             @Override

  1708             protected void visitAnnotationStart(String type) throws IOException {

  1709                 if (cnt[depth]++ > 0) {

  1710                     out.append(",");

  1711                 }

  1712                 out.append('"').append(type).append("\" : {\n");

  1713                 cnt[++depth] = 0;

  1714             }

  1716             @Override

  1717             protected void visitAnnotationEnd(String type) throws IOException {

  1718                 out.append("\n}\n");

  1719                 depth--;

  1720             }

  1722             @Override

  1723             protected void visitValueStart(String attrName, char type) throws IOException {

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

  1725                     out.append(",\n");

  1726                 }

  1727                 cnt[++depth] = 0;

  1728                 if (attrName != null) {

  1729                     out.append(attrName).append(" : ");

  1730                 }

  1731                 if (type == '[') {

  1732                     out.append("[");

  1733                 }

  1734             }

  1736             @Override

  1737             protected void visitValueEnd(String attrName, char type) throws IOException {

  1738                 if (type == '[') {

  1739                     out.append("]");

  1740                 }

  1741                 depth--;

  1742             }

  1744             @Override

  1745             protected void visitAttr(String type, String attr, String attrType, String value)

  1746             throws IOException {

  1747                 if (attr == null && value == null) {

  1748                     return;

  1749                 }

  1750                 out.append(value);

  1751             }

  1752         };

  1753         ap.parse(data, cd);

  1754     }

  1756     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1757         final String name = args[indx];

  1758         if (name == null) {

  1759             return "";

  1760         }

  1761         if (name.contains(",")) {

  1762             throw new IOException("Wrong parameter with ',': " + name);

  1763         }

  1764         out.append(name);

  1765         return ",";

  1766     }

  1768     private static void emit(final Appendable out,

  1769                              final String format,

  1770                              final CharSequence... params) throws IOException {

  1771         final int length = format.length();

  1773         int processed = 0;

  1774         int paramOffset = format.indexOf('@');

  1775         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1776             final char paramChar = format.charAt(paramOffset + 1);

  1777             if ((paramChar >= '1') && (paramChar <= '9')) {

  1778                 final int paramIndex = paramChar - '0' - 1;

  1780                 out.append(format, processed, paramOffset);

  1781                 out.append(params[paramIndex]);

  1783                 ++paramOffset;

  1784                 processed = paramOffset + 1;

  1785             }

  1787             paramOffset = format.indexOf('@', paramOffset + 1);

  1788         }

  1790         out.append(format, processed, length);

  1791     }

  1793     private void generateCatch(TrapData[] traps) throws IOException {

  1794         out.append("} catch (e) {\n");

  1795         int finallyPC = -1;

  1796         for (TrapData e : traps) {

  1797             if (e == null) {

  1798                 break;

  1799             }

  1800             if (e.catch_cpx != 0) { //not finally

  1801                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1802                 addReference(classInternalName);

  1803                 if ("java/lang/Throwable".equals(classInternalName)) {

  1804                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1805                     out.append("  var stA0 = e;");

  1806                     out.append("} else {");

  1807                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1808                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1809                     out.append("}");

  1810                     out.append("gt=" + e.handler_pc + "; continue;");

  1811                 } else {

  1812                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1813                     out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");

  1814                     out.append("}\n");

  1815                 }

  1816             } else {

  1817                 finallyPC = e.handler_pc;

  1818             }

  1819         }

  1820         if (finallyPC == -1) {

  1821             out.append("throw e;");

  1822         } else {

  1823             out.append("gt=" + finallyPC + "; var stA0 = e; continue;");

  1824         }

  1825         out.append("\n}");

  1826     }

  1827 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 03 Feb 2013 22:58:42 +0100
branch	reflection
changeset 654	26a86cc00224
parent 652	f095ea52f417
child 655	044c72732424
permissions	-rw-r--r--