hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@677c9bcf507f

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

    96                 requireScript(arr[0]);

    97             }

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

    99                 return null;

   100             }

   101         }

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

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

   104             "container", "prototype"

   105         );

   106         StringArray toInitilize = new StringArray();

   107         final String className = className(jc);

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

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

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

   111         if (proto == null) {

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

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

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

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

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

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

   118         } else {

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

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

   121                 proto[0] = "p";

   122             }

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

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

   125         }

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

   127             if (v.isStatic()) {

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

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

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

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

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

   133             } else {

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

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

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

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

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

   139                    .append("; };");

   140             }

   141         }

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

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

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

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

   146                 "name", "value"

   147             );

   148             if (only != null) {

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

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

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

   152                 }

   153                 continue;

   154             }

   155             String prefix;

   156             String mn;

   157             if (m.isStatic()) {

   158                 prefix = "\n    c.";

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

   160             } else {

   161                 if (m.isConstructor()) {

   162                     prefix = "\n    CLS.";

   163                     mn = generateInstanceMethod(prefix, m);

   164                 } else {

   165                     prefix = "\n    c.";

   166                     mn = generateInstanceMethod(prefix, m);

   167                 }

   168             }

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

   170             if (runAnno != null) {

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

   172                 generateAnno(jc, out, runAnno);

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

   174             }

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

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

   177         }

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

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

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

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

   182         }

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

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

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

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

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

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

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

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

   191         if (classAnno != null) {

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

   193             generateAnno(jc, out, classAnno);

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

   195         }

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

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

   198         }

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

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

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

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

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

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

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

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

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

   208                 "name", "value"

   209             );

   210             if (only != null) {

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

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

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

   214                 }

   215                 continue;

   216             }

   217             if (!v.isStatic()) {

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

   219                     append(className).append('_').

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

   221             }

   222         }

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

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

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

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

   227 //        StringBuilder sb = new StringBuilder();

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

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

   230 //        }

   231         return "";

   232     }

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

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

   235         if (jsb != null) {

   236             return jsb;

   237         }

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

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

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

   241         }

   242         generateMethod(prefix, mn, m);

   243         return mn;

   244     }

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

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

   248         if (jsb != null) {

   249             return jsb;

   250         }

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

   252         generateMethod(prefix, mn, m);

   253         return mn;

   254     }

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

   257             throws IOException {

   258         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   259         TrapDataIterator trap = m.getTrapDataIterator();

   260         final LocalsMapper lmapper =

   261                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   268         if (byteCodes == null) {

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

   270                .append(jc.getClassName()).append('.')

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

   272             out.append("};");

   273             return;

   274         }

   276         final StackMapper smapper = new StackMapper();

   278         if (!m.isStatic()) {

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

   280         }

   282         int lastStackFrame = -1;

   283         TrapData[] previousTrap = null;

   284         boolean wide = false;

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

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

   288             int prev = i;

   289             stackMapIterator.advanceTo(i);

   290             boolean changeInCatch = trap.advanceTo(i);

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

   292                 if (previousTrap != null) {

   293                     generateCatch(previousTrap);

   294                     previousTrap = null;

   295                 }

   296             }

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

   298                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   302                 changeInCatch = true;

   303             } else {

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

   305             }

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

   307                 out.append("try {");

   308                 previousTrap = trap.current();

   309             }

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

   311             switch (c) {

   312                 case opc_aload_0:

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

   314                     break;

   315                 case opc_iload_0:

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

   317                     break;

   318                 case opc_lload_0:

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

   320                     break;

   321                 case opc_fload_0:

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

   323                     break;

   324                 case opc_dload_0:

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

   326                     break;

   327                 case opc_aload_1:

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

   329                     break;

   330                 case opc_iload_1:

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

   332                     break;

   333                 case opc_lload_1:

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

   335                     break;

   336                 case opc_fload_1:

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

   338                     break;

   339                 case opc_dload_1:

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

   341                     break;

   342                 case opc_aload_2:

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

   344                     break;

   345                 case opc_iload_2:

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

   347                     break;

   348                 case opc_lload_2:

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

   350                     break;

   351                 case opc_fload_2:

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

   353                     break;

   354                 case opc_dload_2:

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

   356                     break;

   357                 case opc_aload_3:

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

   359                     break;

   360                 case opc_iload_3:

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

   362                     break;

   363                 case opc_lload_3:

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

   365                     break;

   366                 case opc_fload_3:

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

   368                     break;

   369                 case opc_dload_3:

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

   371                     break;

   372                 case opc_iload: {

   373                     ++i;

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

   375                                           : readUByte(byteCodes, i);

   376                     wide = false;

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

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

   379                     break;

   380                 }

   381                 case opc_lload: {

   382                     ++i;

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

   384                                           : readUByte(byteCodes, i);

   385                     wide = false;

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

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

   388                     break;

   389                 }

   390                 case opc_fload: {

   391                     ++i;

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

   393                                           : readUByte(byteCodes, i);

   394                     wide = false;

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

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

   397                     break;

   398                 }

   399                 case opc_dload: {

   400                     ++i;

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

   402                                           : readUByte(byteCodes, i);

   403                     wide = false;

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

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

   406                     break;

   407                 }

   408                 case opc_aload: {

   409                     ++i;

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

   411                                           : readUByte(byteCodes, i);

   412                     wide = false;

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

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

   415                     break;

   416                 }

   417                 case opc_istore: {

   418                     ++i;

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

   420                                           : readUByte(byteCodes, i);

   421                     wide = false;

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

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

   424                     break;

   425                 }

   426                 case opc_lstore: {

   427                     ++i;

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

   429                                           : readUByte(byteCodes, i);

   430                     wide = false;

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

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

   433                     break;

   434                 }

   435                 case opc_fstore: {

   436                     ++i;

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

   438                                           : readUByte(byteCodes, i);

   439                     wide = false;

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

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

   442                     break;

   443                 }

   444                 case opc_dstore: {

   445                     ++i;

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

   447                                           : readUByte(byteCodes, i);

   448                     wide = false;

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

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

   451                     break;

   452                 }

   453                 case opc_astore: {

   454                     ++i;

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

   456                                           : readUByte(byteCodes, i);

   457                     wide = false;

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

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

   460                     break;

   461                 }

   462                 case opc_astore_0:

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

   464                     break;

   465                 case opc_istore_0:

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

   467                     break;

   468                 case opc_lstore_0:

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

   470                     break;

   471                 case opc_fstore_0:

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

   473                     break;

   474                 case opc_dstore_0:

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

   476                     break;

   477                 case opc_astore_1:

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

   479                     break;

   480                 case opc_istore_1:

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

   482                     break;

   483                 case opc_lstore_1:

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

   485                     break;

   486                 case opc_fstore_1:

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

   488                     break;

   489                 case opc_dstore_1:

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

   491                     break;

   492                 case opc_astore_2:

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

   494                     break;

   495                 case opc_istore_2:

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

   497                     break;

   498                 case opc_lstore_2:

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

   500                     break;

   501                 case opc_fstore_2:

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

   503                     break;

   504                 case opc_dstore_2:

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

   506                     break;

   507                 case opc_astore_3:

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

   509                     break;

   510                 case opc_istore_3:

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

   512                     break;

   513                 case opc_lstore_3:

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

   515                     break;

   516                 case opc_fstore_3:

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

   518                     break;

   519                 case opc_dstore_3:

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

   521                     break;

   522                 case opc_iadd:

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

   524                     break;

   525                 case opc_ladd:

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

   527                     break;

   528                 case opc_fadd:

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

   530                     break;

   531                 case opc_dadd:

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

   533                     break;

   534                 case opc_isub:

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

   536                     break;

   537                 case opc_lsub:

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

   539                     break;

   540                 case opc_fsub:

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

   542                     break;

   543                 case opc_dsub:

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

   545                     break;

   546                 case opc_imul:

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

   548                     break;

   549                 case opc_lmul:

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

   551                     break;

   552                 case opc_fmul:

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

   554                     break;

   555                 case opc_dmul:

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

   557                     break;

   558                 case opc_idiv:

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

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

   561                     break;

   562                 case opc_ldiv:

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

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

   565                     break;

   566                 case opc_fdiv:

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

   568                     break;

   569                 case opc_ddiv:

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

   571                     break;

   572                 case opc_irem:

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

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

   575                     break;

   576                 case opc_lrem:

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

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

   579                     break;

   580                 case opc_frem:

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

   582                     break;

   583                 case opc_drem:

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

   585                     break;

   586                 case opc_iand:

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

   588                     break;

   589                 case opc_land:

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

   591                     break;

   592                 case opc_ior:

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

   594                     break;

   595                 case opc_lor:

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

   597                     break;

   598                 case opc_ixor:

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

   600                     break;

   601                 case opc_lxor:

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

   603                     break;

   604                 case opc_ineg:

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

   606                     break;

   607                 case opc_lneg:

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

   609                     break;

   610                 case opc_fneg:

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

   612                     break;

   613                 case opc_dneg:

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

   615                     break;

   616                 case opc_ishl:

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

   618                     break;

   619                 case opc_lshl:

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

   621                     break;

   622                 case opc_ishr:

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

   624                     break;

   625                 case opc_lshr:

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

   627                     break;

   628                 case opc_iushr:

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

   630                     break;

   631                 case opc_lushr:

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

   633                     break;

   634                 case opc_iinc: {

   635                     ++i;

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

   637                                              : readUByte(byteCodes, i);

   638                     ++i;

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

   640                                             : byteCodes[i];

   641                     wide = false;

   642                     if (incrBy == 1) {

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

   644                     } else {

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

   646                              lmapper.getI(varIndx),

   647                              Integer.toString(incrBy));

   648                     }

   649                     break;

   650                 }

   651                 case opc_return:

   652                     emit(out, "return;");

   653                     break;

   654                 case opc_ireturn:

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

   656                     break;

   657                 case opc_lreturn:

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

   659                     break;

   660                 case opc_freturn:

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

   662                     break;

   663                 case opc_dreturn:

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

   665                     break;

   666                 case opc_areturn:

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

   668                     break;

   669                 case opc_i2l:

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

   671                     break;

   672                 case opc_i2f:

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

   674                     break;

   675                 case opc_i2d:

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

   677                     break;

   678                 case opc_l2i:

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

   680                     break;

   681                     // max int check?

   682                 case opc_l2f:

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

   684                     break;

   685                 case opc_l2d:

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

   687                     break;

   688                 case opc_f2d:

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

   690                     break;

   691                 case opc_d2f:

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

   693                     break;

   694                 case opc_f2i:

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

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

   697                     break;

   698                 case opc_f2l:

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

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

   701                     break;

   702                 case opc_d2i:

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

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

   705                     break;

   706                 case opc_d2l:

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

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

   709                     break;

   710                 case opc_i2b:

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

   712                     break;

   713                 case opc_i2c:

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

   715                     break;

   716                 case opc_i2s:

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

   718                     break;

   719                 case opc_aconst_null:

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

   721                     break;

   722                 case opc_iconst_m1:

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

   724                     break;

   725                 case opc_iconst_0:

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

   727                     break;

   728                 case opc_dconst_0:

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

   730                     break;

   731                 case opc_lconst_0:

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

   733                     break;

   734                 case opc_fconst_0:

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

   736                     break;

   737                 case opc_iconst_1:

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

   739                     break;

   740                 case opc_lconst_1:

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

   742                     break;

   743                 case opc_fconst_1:

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

   745                     break;

   746                 case opc_dconst_1:

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

   748                     break;

   749                 case opc_iconst_2:

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

   751                     break;

   752                 case opc_fconst_2:

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

   754                     break;

   755                 case opc_iconst_3:

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

   757                     break;

   758                 case opc_iconst_4:

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

   760                     break;

   761                 case opc_iconst_5:

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

   763                     break;

   764                 case opc_ldc: {

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

   766                     String v = encodeConstant(indx);

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

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

   769                     break;

   770                 }

   771                 case opc_ldc_w:

   772                 case opc_ldc2_w: {

   773                     int indx = readIntArg(byteCodes, i);

   774                     i += 2;

   775                     String v = encodeConstant(indx);

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

   777                     if (type == VarType.LONG) {

   778                         final Long lv = new Long(v);

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

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

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

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

   783                     } else {

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

   785                     }

   786                     break;

   787                 }

   788                 case opc_lcmp:

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

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

   791                     break;

   792                 case opc_fcmpl:

   793                 case opc_fcmpg:

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

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

   796                     break;

   797                 case opc_dcmpl:

   798                 case opc_dcmpg:

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

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

   801                     break;

   802                 case opc_if_acmpeq:

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

   804                                    "===");

   805                     break;

   806                 case opc_if_acmpne:

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

   808                                    "!==");

   809                     break;

   810                 case opc_if_icmpeq:

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

   812                                    "==");

   813                     break;

   814                 case opc_ifeq: {

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

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

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

   818                     i += 2;

   819                     break;

   820                 }

   821                 case opc_ifne: {

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

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

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

   825                     i += 2;

   826                     break;

   827                 }

   828                 case opc_iflt: {

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

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

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

   832                     i += 2;

   833                     break;

   834                 }

   835                 case opc_ifle: {

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

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

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

   839                     i += 2;

   840                     break;

   841                 }

   842                 case opc_ifgt: {

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

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

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

   846                     i += 2;

   847                     break;

   848                 }

   849                 case opc_ifge: {

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

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

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

   853                     i += 2;

   854                     break;

   855                 }

   856                 case opc_ifnonnull: {

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

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

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

   860                     i += 2;

   861                     break;

   862                 }

   863                 case opc_ifnull: {

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

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

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

   867                     i += 2;

   868                     break;

   869                 }

   870                 case opc_if_icmpne:

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

   872                                    "!=");

   873                     break;

   874                 case opc_if_icmplt:

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

   876                                    "<");

   877                     break;

   878                 case opc_if_icmple:

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

   880                                    "<=");

   881                     break;

   882                 case opc_if_icmpgt:

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

   884                                    ">");

   885                     break;

   886                 case opc_if_icmpge:

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

   888                                    ">=");

   889                     break;

   890                 case opc_goto: {

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

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

   893                     i += 2;

   894                     break;

   895                 }

   896                 case opc_lookupswitch: {

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

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

   899                     table += 4;

   900                     int n = readInt4(byteCodes, table);

   901                     table += 4;

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

   903                     while (n-- > 0) {

   904                         int cnstnt = readInt4(byteCodes, table);

   905                         table += 4;

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

   907                         table += 4;

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

   909                     }

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

   911                     i = table - 1;

   912                     break;

   913                 }

   914                 case opc_tableswitch: {

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

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

   917                     table += 4;

   918                     int low = readInt4(byteCodes, table);

   919                     table += 4;

   920                     int high = readInt4(byteCodes, table);

   921                     table += 4;

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

   923                     while (low <= high) {

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

   925                         table += 4;

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

   927                         low++;

   928                     }

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

   930                     i = table - 1;

   931                     break;

   932                 }

   933                 case opc_invokeinterface: {

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

   935                     break;

   936                 }

   937                 case opc_invokevirtual:

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

   939                     break;

   940                 case opc_invokespecial:

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

   942                     break;

   943                 case opc_invokestatic:

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

   945                     break;

   946                 case opc_new: {

   947                     int indx = readIntArg(byteCodes, i);

   948                     String ci = jc.getClassName(indx);

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

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

   951                     addReference(ci);

   952                     i += 2;

   953                     break;

   954                 }

   955                 case opc_newarray:

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

   957                     String jvmType;

   958                     switch (atype) {

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

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

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

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

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

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

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

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

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

   968                     }

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

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

   971                     break;

   972                 case opc_anewarray: {

   973                     int type = readIntArg(byteCodes, i);

   974                     i += 2;

   975                     String typeName = jc.getClassName(type);

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

   977                         typeName = "[" + typeName;

   978                     } else {

   979                         typeName = "[L" + typeName + ";";

   980                     }

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

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

   983                     break;

   984                 }

   985                 case opc_multianewarray: {

   986                     int type = readIntArg(byteCodes, i);

   987                     i += 2;

   988                     String typeName = jc.getClassName(type);

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

   990                     StringBuilder dims = new StringBuilder();

   991                     dims.append('[');

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

   993                         if (d != 0) {

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

   995                         }

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

   997                     }

   998                     dims.append(']');

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

  1000                          dims.toString(), smapper.pushA(), typeName);

  1001                     break;

  1002                 }

  1003                 case opc_arraylength:

  1004                     emit(out, "var @2 = @1.length;",

  1005                          smapper.popA(), smapper.pushI());

  1006                     break;

  1007                 case opc_lastore:

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

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

  1010                     break;

  1011                 case opc_fastore:

  1012                     emit(out, "@3.at(@2, @1);",

  1013                          smapper.popF(), smapper.popI(), smapper.popA());

  1014                     break;

  1015                 case opc_dastore:

  1016                     emit(out, "@3.at(@2, @1);",

  1017                          smapper.popD(), smapper.popI(), smapper.popA());

  1018                     break;

  1019                 case opc_aastore:

  1020                     emit(out, "@3.at(@2, @1);",

  1021                          smapper.popA(), smapper.popI(), smapper.popA());

  1022                     break;

  1023                 case opc_iastore:

  1024                 case opc_bastore:

  1025                 case opc_castore:

  1026                 case opc_sastore:

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

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

  1029                     break;

  1030                 case opc_laload:

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

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

  1033                     break;

  1034                 case opc_faload:

  1035                     emit(out, "var @3 = @2.at(@1);",

  1036                          smapper.popI(), smapper.popA(), smapper.pushF());

  1037                     break;

  1038                 case opc_daload:

  1039                     emit(out, "var @3 = @2.at(@1);",

  1040                          smapper.popI(), smapper.popA(), smapper.pushD());

  1041                     break;

  1042                 case opc_aaload:

  1043                     emit(out, "var @3 = @2.at(@1);",

  1044                          smapper.popI(), smapper.popA(), smapper.pushA());

  1045                     break;

  1046                 case opc_iaload:

  1047                 case opc_baload:

  1048                 case opc_caload:

  1049                 case opc_saload:

  1050                     emit(out, "var @3 = @2.at(@1);",

  1051                          smapper.popI(), smapper.popA(), smapper.pushI());

  1052                     break;

  1053                 case opc_pop:

  1054                 case opc_pop2:

  1055                     smapper.pop(1);

  1056                     debug("/* pop */");

  1057                     break;

  1058                 case opc_dup: {

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

  1060                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1061                     break;

  1062                 }

  1063                 case opc_dup2: {

  1064                     final Variable vi1 = smapper.get(0);

  1066                     if (vi1.isCategory2()) {

  1067                         emit(out, "var @1 = @2;",

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

  1069                     } else {

  1070                         final Variable vi2 = smapper.get(1);

  1071                         emit(out, "var @1 = @2, @3 = @4;",

  1072                              smapper.pushT(vi2.getType()), vi2,

  1073                              smapper.pushT(vi1.getType()), vi1);

  1074                     }

  1075                     break;

  1076                 }

  1077                 case opc_dup_x1: {

  1078                     final Variable vi1 = smapper.pop();

  1079                     final Variable vi2 = smapper.pop();

  1080                     final Variable vo3 = smapper.pushT(vi1.getType());

  1081                     final Variable vo2 = smapper.pushT(vi2.getType());

  1082                     final Variable vo1 = smapper.pushT(vi1.getType());

  1084                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1085                          vo1, vi1, vo2, vi2, vo3, vo1);

  1086                     break;

  1087                 }

  1088                 case opc_dup2_x1: {

  1089                     final Variable vi1 = smapper.pop();

  1090                     final Variable vi2 = smapper.pop();

  1092                     if (vi1.isCategory2()) {

  1093                         final Variable vo3 = smapper.pushT(vi1.getType());

  1094                         final Variable vo2 = smapper.pushT(vi2.getType());

  1095                         final Variable vo1 = smapper.pushT(vi1.getType());

  1097                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1098                              vo1, vi1, vo2, vi2, vo3, vo1);

  1099                     } else {

  1100                         final Variable vi3 = smapper.pop();

  1101                         final Variable vo5 = smapper.pushT(vi2.getType());

  1102                         final Variable vo4 = smapper.pushT(vi1.getType());

  1103                         final Variable vo3 = smapper.pushT(vi3.getType());

  1104                         final Variable vo2 = smapper.pushT(vi2.getType());

  1105                         final Variable vo1 = smapper.pushT(vi1.getType());

  1107                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1108                              vo1, vi1, vo2, vi2, vo3, vi3);

  1109                         emit(out, " @1 = @2, @3 = @4;",

  1110                              vo4, vo1, vo5, vo2);

  1111                     }

  1112                     break;

  1113                 }

  1114                 case opc_dup_x2: {

  1115                     final Variable vi1 = smapper.pop();

  1116                     final Variable vi2 = smapper.pop();

  1118                     if (vi2.isCategory2()) {

  1119                         final Variable vo3 = smapper.pushT(vi1.getType());

  1120                         final Variable vo2 = smapper.pushT(vi2.getType());

  1121                         final Variable vo1 = smapper.pushT(vi1.getType());

  1123                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1124                              vo1, vi1, vo2, vi2, vo3, vo1);

  1125                     } else {

  1126                         final Variable vi3 = smapper.pop();

  1127                         final Variable vo4 = smapper.pushT(vi1.getType());

  1128                         final Variable vo3 = smapper.pushT(vi3.getType());

  1129                         final Variable vo2 = smapper.pushT(vi2.getType());

  1130                         final Variable vo1 = smapper.pushT(vi1.getType());

  1132                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1133                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1134                     }

  1135                     break;

  1136                 }

  1137                 case opc_dup2_x2: {

  1138                     final Variable vi1 = smapper.pop();

  1139                     final Variable vi2 = smapper.pop();

  1141                     if (vi1.isCategory2()) {

  1142                         if (vi2.isCategory2()) {

  1143                             final Variable vo3 = smapper.pushT(vi1.getType());

  1144                             final Variable vo2 = smapper.pushT(vi2.getType());

  1145                             final Variable vo1 = smapper.pushT(vi1.getType());

  1147                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1148                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1149                         } else {

  1150                             final Variable vi3 = smapper.pop();

  1151                             final Variable vo4 = smapper.pushT(vi1.getType());

  1152                             final Variable vo3 = smapper.pushT(vi3.getType());

  1153                             final Variable vo2 = smapper.pushT(vi2.getType());

  1154                             final Variable vo1 = smapper.pushT(vi1.getType());

  1156                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1157                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1158                         }

  1159                     } else {

  1160                         final Variable vi3 = smapper.pop();

  1162                         if (vi3.isCategory2()) {

  1163                             final Variable vo5 = smapper.pushT(vi2.getType());

  1164                             final Variable vo4 = smapper.pushT(vi1.getType());

  1165                             final Variable vo3 = smapper.pushT(vi3.getType());

  1166                             final Variable vo2 = smapper.pushT(vi2.getType());

  1167                             final Variable vo1 = smapper.pushT(vi1.getType());

  1169                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1170                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1171                             emit(out, " @1 = @2, @3 = @4;",

  1172                                  vo4, vo1, vo5, vo2);

  1173                         } else {

  1174                             final Variable vi4 = smapper.pop();

  1175                             final Variable vo6 = smapper.pushT(vi2.getType());

  1176                             final Variable vo5 = smapper.pushT(vi1.getType());

  1177                             final Variable vo4 = smapper.pushT(vi4.getType());

  1178                             final Variable vo3 = smapper.pushT(vi3.getType());

  1179                             final Variable vo2 = smapper.pushT(vi2.getType());

  1180                             final Variable vo1 = smapper.pushT(vi1.getType());

  1182                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1183                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1184                             emit(out, " @1 = @2, @3 = @4;",

  1185                                  vo5, vo1, vo6, vo2);

  1186                         }

  1187                     }

  1188                     break;

  1189                 }

  1190                 case opc_swap: {

  1191                     final Variable vi1 = smapper.get(0);

  1192                     final Variable vi2 = smapper.get(1);

  1194                     if (vi1.getType() == vi2.getType()) {

  1195                         final Variable tmp = smapper.pushT(vi1.getType());

  1197                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1198                              tmp, vi1, vi2);

  1199                         smapper.pop(1);

  1200                     } else {

  1201                         smapper.pop(2);

  1202                         smapper.pushT(vi1.getType());

  1203                         smapper.pushT(vi2.getType());

  1204                     }

  1205                     break;

  1206                 }

  1207                 case opc_bipush:

  1208                     emit(out, "var @1 = @2;",

  1209                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1210                     break;

  1211                 case opc_sipush:

  1212                     emit(out, "var @1 = @2;",

  1213                          smapper.pushI(),

  1214                          Integer.toString(readIntArg(byteCodes, i)));

  1215                     i += 2;

  1216                     break;

  1217                 case opc_getfield: {

  1218                     int indx = readIntArg(byteCodes, i);

  1219                     String[] fi = jc.getFieldInfoName(indx);

  1220                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1221                     final String mangleClass = mangleSig(fi[0]);

  1222                     final String mangleClassAccess = accessClass(mangleClass);

  1223                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1224                          smapper.popA(),

  1225                          smapper.pushT(type), fi[1], mangleClassAccess

  1226                     );

  1227                     i += 2;

  1228                     break;

  1229                 }

  1230                 case opc_putfield: {

  1231                     int indx = readIntArg(byteCodes, i);

  1232                     String[] fi = jc.getFieldInfoName(indx);

  1233                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1234                     final String mangleClass = mangleSig(fi[0]);

  1235                     final String mangleClassAccess = accessClass(mangleClass);

  1236                     emit(out, "@4(false)._@3.call(@2, @1);",

  1237                          smapper.popT(type),

  1238                          smapper.popA(), fi[1],

  1239                          mangleClassAccess

  1240                     );

  1241                     i += 2;

  1242                     break;

  1243                 }

  1244                 case opc_getstatic: {

  1245                     int indx = readIntArg(byteCodes, i);

  1246                     String[] fi = jc.getFieldInfoName(indx);

  1247                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1248                     emit(out, "var @1 = @2(false)._@3();",

  1249                          smapper.pushT(type),

  1250                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1251                     i += 2;

  1252                     addReference(fi[0]);

  1253                     break;

  1254                 }

  1255                 case opc_putstatic: {

  1256                     int indx = readIntArg(byteCodes, i);

  1257                     String[] fi = jc.getFieldInfoName(indx);

  1258                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1259                     emit(out, "@1(false)._@2(@3);",

  1260                          accessClass(fi[0].replace('/', '_')), fi[1],

  1261                          smapper.popT(type));

  1262                     i += 2;

  1263                     addReference(fi[0]);

  1264                     break;

  1265                 }

  1266                 case opc_checkcast: {

  1267                     int indx = readIntArg(byteCodes, i);

  1268                     final String type = jc.getClassName(indx);

  1269                     if (!type.startsWith("[")) {

  1270                         emit(out,

  1271                              "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1272                              smapper.getA(0), type.replace('/', '_'));

  1273                     } else {

  1274                         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);",

  1275                              smapper.getA(0), type

  1276                         );

  1277                     }

  1278                     i += 2;

  1279                     break;

  1280                 }

  1281                 case opc_instanceof: {

  1282                     int indx = readIntArg(byteCodes, i);

  1283                     final String type = jc.getClassName(indx);

  1284                     if (!type.startsWith("[")) {

  1285                         emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  1286                              smapper.popA(), smapper.pushI(),

  1287                              type.replace('/', '_'));

  1288                     } else {

  1289                         emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1290                             smapper.popA(), smapper.pushI(),

  1291                             type

  1292                         );

  1293                     }

  1294                     i += 2;

  1295                     break;

  1296                 }

  1297                 case opc_athrow: {

  1298                     final Variable v = smapper.popA();

  1299                     smapper.clear();

  1301                     emit(out, "{ var @1 = @2; throw @2; }",

  1302                          smapper.pushA(), v);

  1303                     break;

  1304                 }

  1306                 case opc_monitorenter: {

  1307                     out.append("/* monitor enter */");

  1308                     smapper.popA();

  1309                     break;

  1310                 }

  1312                 case opc_monitorexit: {

  1313                     out.append("/* monitor exit */");

  1314                     smapper.popA();

  1315                     break;

  1316                 }

  1318                 case opc_wide:

  1319                     wide = true;

  1320                     break;

  1322                 default: {

  1323                     wide = false;

  1324                     emit(out, "throw 'unknown bytecode @1';",

  1325                          Integer.toString(c));

  1326                 }

  1327             }

  1328             if (debug(" //")) {

  1329                 for (int j = prev; j <= i; j++) {

  1330                     out.append(" ");

  1331                     final int cc = readUByte(byteCodes, j);

  1332                     out.append(Integer.toString(cc));

  1333                 }

  1334             }

  1335             out.append("\n");

  1336         }

  1337         if (previousTrap != null) {

  1338             generateCatch(previousTrap);

  1339         }

  1340         out.append("  }\n");

  1341         out.append("};");

  1342     }

  1344     private int generateIf(byte[] byteCodes, int i,

  1345                            final Variable v2, final Variable v1,

  1346                            final String test) throws IOException {

  1347         int indx = i + readIntArg(byteCodes, i);

  1348         out.append("if (").append(v1)

  1349            .append(' ').append(test).append(' ')

  1350            .append(v2).append(") { gt = " + indx)

  1351            .append("; continue; }");

  1352         return i + 2;

  1353     }

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

  1356         final int indxHi = byteCodes[offsetInstruction + 1] << 8;

  1357         final int indxLo = byteCodes[offsetInstruction + 2];

  1358         return (indxHi & 0xffffff00) | (indxLo & 0xff);

  1359     }

  1360     private int readInt4(byte[] byteCodes, int offset) {

  1361         final int d = byteCodes[offset + 0] << 24;

  1362         final int c = byteCodes[offset + 1] << 16;

  1363         final int b = byteCodes[offset + 2] << 8;

  1364         final int a = byteCodes[offset + 3];

  1365         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1366     }

  1367     private int readUByte(byte[] byteCodes, int offset) {

  1368         return byteCodes[offset] & 0xff;

  1369     }

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

  1372         return ((byteCodes[offset] & 0xff) << 8)

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

  1374     }

  1376     private int readShort(byte[] byteCodes, int offset) {

  1377         return (byteCodes[offset] << 8)

  1378                     | (byteCodes[offset + 1] & 0xff);

  1379     }

  1381     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1382         int i = 0;

  1383         Boolean count = null;

  1384         boolean array = false;

  1385         sig.append("__");

  1386         int firstPos = sig.length();

  1387         while (i < descriptor.length()) {

  1388             char ch = descriptor.charAt(i++);

  1389             switch (ch) {

  1390                 case '(':

  1391                     count = true;

  1392                     continue;

  1393                 case ')':

  1394                     count = false;

  1395                     continue;

  1396                 case 'B':

  1397                 case 'C':

  1398                 case 'D':

  1399                 case 'F':

  1400                 case 'I':

  1401                 case 'J':

  1402                 case 'S':

  1403                 case 'Z':

  1404                     if (count) {

  1405                         if (array) {

  1406                             sig.append("_3");

  1407                         }

  1408                         sig.append(ch);

  1409                         if (ch == 'J' || ch == 'D') {

  1410                             cnt.append('1');

  1411                         } else {

  1412                             cnt.append('0');

  1413                         }

  1414                     } else {

  1415                         sig.insert(firstPos, ch);

  1416                         if (array) {

  1417                             returnType[0] = '[';

  1418                             sig.insert(firstPos, "_3");

  1419                         } else {

  1420                             returnType[0] = ch;

  1421                         }

  1422                     }

  1423                     array = false;

  1424                     continue;

  1425                 case 'V':

  1426                     assert !count;

  1427                     returnType[0] = 'V';

  1428                     sig.insert(firstPos, 'V');

  1429                     continue;

  1430                 case 'L':

  1431                     int next = descriptor.indexOf(';', i);

  1432                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1433                     if (count) {

  1434                         if (array) {

  1435                             sig.append("_3");

  1436                         }

  1437                         sig.append(realSig);

  1438                         cnt.append('0');

  1439                     } else {

  1440                         sig.insert(firstPos, realSig);

  1441                         if (array) {

  1442                             sig.insert(firstPos, "_3");

  1443                         }

  1444                         returnType[0] = 'L';

  1445                     }

  1446                     i = next + 1;

  1447                     array = false;

  1448                     continue;

  1449                 case '[':

  1450                     array = true;

  1451                     continue;

  1452                 default:

  1453                     throw new IllegalStateException("Invalid char: " + ch);

  1454             }

  1455         }

  1456     }

  1458     static String mangleSig(String sig) {

  1459         return mangleSig(sig, 0, sig.length());

  1460     }

  1462     private static String mangleSig(String txt, int first, int last) {

  1463         StringBuilder sb = new StringBuilder();

  1464         for (int i = first; i < last; i++) {

  1465             final char ch = txt.charAt(i);

  1466             switch (ch) {

  1467                 case '/': sb.append('_'); break;

  1468                 case '_': sb.append("_1"); break;

  1469                 case ';': sb.append("_2"); break;

  1470                 case '[': sb.append("_3"); break;

  1471                 default: sb.append(ch); break;

  1472             }

  1473         }

  1474         return sb.toString();

  1475     }

  1477     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1478         StringBuilder name = new StringBuilder();

  1479         if ("<init>".equals(m.getName())) { // NOI18N

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

  1481         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1482             name.append("class"); // NOI18N

  1483         } else {

  1484             name.append(m.getName());

  1485         }

  1487         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1488         return name.toString();

  1489     }

  1491     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1492         StringBuilder name = new StringBuilder();

  1493         String descr = mi[2];//mi.getDescriptor();

  1494         String nm= mi[1];

  1495         if ("<init>".equals(nm)) { // NOI18N

  1496             name.append("cons"); // NOI18N

  1497         } else {

  1498             name.append(nm);

  1499         }

  1500         countArgs(descr, returnType, name, cnt);

  1501         return name.toString();

  1502     }

  1504     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1505     throws IOException {

  1506         int methodIndex = readIntArg(byteCodes, i);

  1507         String[] mi = jc.getFieldInfoName(methodIndex);

  1508         char[] returnType = { 'V' };

  1509         StringBuilder cnt = new StringBuilder();

  1510         String mn = findMethodName(mi, cnt, returnType);

  1512         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1513         final Variable[] vars = new Variable[numArguments];

  1515         for (int j = numArguments - 1; j >= 0; --j) {

  1516             vars[j] = mapper.pop();

  1517         }

  1519         if (returnType[0] != 'V') {

  1520             out.append("var ")

  1521                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1522                .append(" = ");

  1523         }

  1525         final String in = mi[0];

  1526         out.append(accessClass(in.replace('/', '_')));

  1527         out.append("(false).");

  1528         if (mn.startsWith("cons_")) {

  1529             out.append("constructor.");

  1530         }

  1531         out.append(mn);

  1532         if (isStatic) {

  1533             out.append('(');

  1534         } else {

  1535             out.append(".call(");

  1536         }

  1537         if (numArguments > 0) {

  1538             out.append(vars[0]);

  1539             for (int j = 1; j < numArguments; ++j) {

  1540                 out.append(", ");

  1541                 out.append(vars[j]);

  1542             }

  1543         }

  1544         out.append(");");

  1545         i += 2;

  1546         addReference(in);

  1547         return i;

  1548     }

  1549     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1550     throws IOException {

  1551         int methodIndex = readIntArg(byteCodes, i);

  1552         String[] mi = jc.getFieldInfoName(methodIndex);

  1553         char[] returnType = { 'V' };

  1554         StringBuilder cnt = new StringBuilder();

  1555         String mn = findMethodName(mi, cnt, returnType);

  1557         final int numArguments = cnt.length() + 1;

  1558         final Variable[] vars = new Variable[numArguments];

  1560         for (int j = numArguments - 1; j >= 0; --j) {

  1561             vars[j] = mapper.pop();

  1562         }

  1564         if (returnType[0] != 'V') {

  1565             out.append("var ")

  1566                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1567                .append(" = ");

  1568         }

  1570         out.append(vars[0]).append('.');

  1571         out.append(mn);

  1572         out.append('(');

  1573         String sep = "";

  1574         for (int j = 1; j < numArguments; ++j) {

  1575             out.append(sep);

  1576             out.append(vars[j]);

  1577             sep = ", ";

  1578         }

  1579         out.append(");");

  1580         i += 2;

  1581         return i;

  1582     }

  1584     private void addReference(String cn) throws IOException {

  1585         if (requireReference(cn)) {

  1586             debug(" /* needs " + cn + " */");

  1587         }

  1588     }

  1590     private void outType(String d, StringBuilder out) {

  1591         int arr = 0;

  1592         while (d.charAt(0) == '[') {

  1593             out.append('A');

  1594             d = d.substring(1);

  1595         }

  1596         if (d.charAt(0) == 'L') {

  1597             assert d.charAt(d.length() - 1) == ';';

  1598             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1599         } else {

  1600             out.append(d);

  1601         }

  1602     }

  1604     private String encodeConstant(int entryIndex) throws IOException {

  1605         String[] classRef = { null };

  1606         String s = jc.stringValue(entryIndex, classRef);

  1607         if (classRef[0] != null) {

  1608             if (classRef[0].startsWith("[")) {

  1609                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1610             } else {

  1611                 addReference(classRef[0]);

  1612                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1613             }

  1614         }

  1615         return s;

  1616     }

  1618     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1619         byte[] arr = m.findAnnotationData(true);

  1620         if (arr == null) {

  1621             return null;

  1622         }

  1623         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1624         class P extends AnnotationParser {

  1625             public P() {

  1626                 super(false, true);

  1627             }

  1629             int cnt;

  1630             String[] args = new String[30];

  1631             String body;

  1633             @Override

  1634             protected void visitAttr(String type, String attr, String at, String value) {

  1635                 if (type.equals(jvmType)) {

  1636                     if ("body".equals(attr)) {

  1637                         body = value;

  1638                     } else if ("args".equals(attr)) {

  1639                         args[cnt++] = value;

  1640                     } else {

  1641                         throw new IllegalArgumentException(attr);

  1642                     }

  1643                 }

  1644             }

  1645         }

  1646         P p = new P();

  1647         p.parse(arr, jc);

  1648         if (p.body == null) {

  1649             return null;

  1650         }

  1651         StringBuilder cnt = new StringBuilder();

  1652         final String mn = findMethodName(m, cnt);

  1653         out.append(prefix).append(mn);

  1654         out.append(" = function(");

  1655         String space = "";

  1656         int index = 0;

  1657         for (int i = 0; i < cnt.length(); i++) {

  1658             out.append(space);

  1659             space = outputArg(out, p.args, index);

  1660             index++;

  1661         }

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

  1663         out.append(p.body);

  1664         out.append("\n}\n");

  1665         return mn;

  1666     }

  1667     private static String className(ClassData jc) {

  1668         //return jc.getName().getInternalName().replace('/', '_');

  1669         return jc.getClassName().replace('/', '_');

  1670     }

  1672     private static String[] findAnnotation(

  1673         byte[] arr, ClassData cd, final String className,

  1674         final String... attrNames

  1675     ) throws IOException {

  1676         if (arr == null) {

  1677             return null;

  1678         }

  1679         final String[] values = new String[attrNames.length];

  1680         final boolean[] found = { false };

  1681         final String jvmType = "L" + className.replace('.', '/') + ";";

  1682         AnnotationParser ap = new AnnotationParser(false, true) {

  1683             @Override

  1684             protected void visitAttr(String type, String attr, String at, String value) {

  1685                 if (type.equals(jvmType)) {

  1686                     found[0] = true;

  1687                     for (int i = 0; i < attrNames.length; i++) {

  1688                         if (attrNames[i].equals(attr)) {

  1689                             values[i] = value;

  1690                         }

  1691                     }

  1692                 }

  1693             }

  1695         };

  1696         ap.parse(arr, cd);

  1697         return found[0] ? values : null;

  1698     }

  1700     private CharSequence initField(FieldData v) {

  1701         final String is = v.getInternalSig();

  1702         if (is.length() == 1) {

  1703             switch (is.charAt(0)) {

  1704                 case 'S':

  1705                 case 'J':

  1706                 case 'B':

  1707                 case 'Z':

  1708                 case 'C':

  1709                 case 'I': return " = 0;";

  1710                 case 'F':

  1711                 case 'D': return " = 0.0;";

  1712                 default:

  1713                     throw new IllegalStateException(is);

  1714             }

  1715         }

  1716         return " = null;";

  1717     }

  1719     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1720         AnnotationParser ap = new AnnotationParser(true, false) {

  1721             int[] cnt = new int[32];

  1722             int depth;

  1724             @Override

  1725             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1726                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1727                 requireReference(slashType);

  1729                 if (cnt[depth]++ > 0) {

  1730                     out.append(",");

  1731                 }

  1732                 if (top) {

  1733                     out.append('"').append(attrType).append("\" : ");

  1734                 }

  1735                 out.append("{\n");

  1736                 cnt[++depth] = 0;

  1737             }

  1739             @Override

  1740             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1741                 out.append("\n}\n");

  1742                 depth--;

  1743             }

  1745             @Override

  1746             protected void visitValueStart(String attrName, char type) throws IOException {

  1747                 if (cnt[depth]++ > 0) {

  1748                     out.append(",\n");

  1749                 }

  1750                 cnt[++depth] = 0;

  1751                 if (attrName != null) {

  1752                     out.append(attrName).append(" : ");

  1753                 }

  1754                 if (type == '[') {

  1755                     out.append("[");

  1756                 }

  1757             }

  1759             @Override

  1760             protected void visitValueEnd(String attrName, char type) throws IOException {

  1761                 if (type == '[') {

  1762                     out.append("]");

  1763                 }

  1764                 depth--;

  1765             }

  1767             @Override

  1768             protected void visitAttr(String type, String attr, String attrType, String value)

  1769             throws IOException {

  1770                 if (attr == null && value == null) {

  1771                     return;

  1772                 }

  1773                 out.append(value);

  1774             }

  1776             @Override

  1777             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1778             throws IOException {

  1779                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1780                 requireReference(slashType);

  1782                 out.append(accessClass(slashType.replace('/', '_')))

  1783                    .append("(false).constructor.").append(value);

  1784             }

  1785         };

  1786         ap.parse(data, cd);

  1787     }

  1789     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1790         final String name = args[indx];

  1791         if (name == null) {

  1792             return "";

  1793         }

  1794         if (name.contains(",")) {

  1795             throw new IOException("Wrong parameter with ',': " + name);

  1796         }

  1797         out.append(name);

  1798         return ",";

  1799     }

  1801     private static void emit(final Appendable out,

  1802                              final String format,

  1803                              final CharSequence... params) throws IOException {

  1804         final int length = format.length();

  1806         int processed = 0;

  1807         int paramOffset = format.indexOf('@');

  1808         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1809             final char paramChar = format.charAt(paramOffset + 1);

  1810             if ((paramChar >= '1') && (paramChar <= '9')) {

  1811                 final int paramIndex = paramChar - '0' - 1;

  1813                 out.append(format, processed, paramOffset);

  1814                 out.append(params[paramIndex]);

  1816                 ++paramOffset;

  1817                 processed = paramOffset + 1;

  1818             }

  1820             paramOffset = format.indexOf('@', paramOffset + 1);

  1821         }

  1823         out.append(format, processed, length);

  1824     }

  1826     private void generateCatch(TrapData[] traps) throws IOException {

  1827         out.append("} catch (e) {\n");

  1828         int finallyPC = -1;

  1829         for (TrapData e : traps) {

  1830             if (e == null) {

  1831                 break;

  1832             }

  1833             if (e.catch_cpx != 0) { //not finally

  1834                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1835                 addReference(classInternalName);

  1836                 if ("java/lang/Throwable".equals(classInternalName)) {

  1837                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1838                     out.append("  var stA0 = e;");

  1839                     out.append("} else {");

  1840                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1841                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1842                     out.append("}");

  1843                     out.append("gt=" + e.handler_pc + "; continue;");

  1844                 } else {

  1845                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1846                     out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");

  1847                     out.append("}\n");

  1848                 }

  1849             } else {

  1850                 finallyPC = e.handler_pc;

  1851             }

  1852         }

  1853         if (finallyPC == -1) {

  1854             out.append("throw e;");

  1855         } else {

  1856             out.append("gt=" + finallyPC + "; var stA0 = e; continue;");

  1857         }

  1858         out.append("\n}");

  1859     }

  1860 }

author	Lubomir Nerad <lubomir.nerad@oracle.com>
	Wed, 13 Mar 2013 11:00:08 +0100
branch	closure
changeset 848	677c9bcf507f
parent 834	b0b23e5ebf9d
child 861	f41a1fef7738
permissions	-rw-r--r--