hg/bck2brwsr: vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@333326d65bf9

     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.$class) {");

   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 = 'temp';");

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

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

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

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

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

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

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

   193         if (classAnno != null) {

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

   195             generateAnno(jc, out, classAnno);

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

   197         }

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

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

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

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

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

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

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

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

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

   207                 "name", "value"

   208             );

   209             if (only != null) {

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

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

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

   213                 }

   214                 continue;

   215             }

   216             if (!v.isStatic()) {

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

   218                     append(className).append('_').

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

   220             }

   221         }

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

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

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

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

   226         StringBuilder sb = new StringBuilder();

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

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

   229         }

   230         return sb.toString();

   231     }

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

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

   234         if (jsb != null) {

   235             return jsb;

   236         }

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

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

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

   240         }

   241         generateMethod(prefix, mn, m);

   242         return mn;

   243     }

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

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

   247         if (jsb != null) {

   248             return jsb;

   249         }

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

   251         generateMethod(prefix, mn, m);

   252         return mn;

   253     }

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

   256             throws IOException {

   257         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   258         TrapDataIterator trap = m.getTrapDataIterator();

   259         final LocalsMapper lmapper =

   260                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   267         if (byteCodes == null) {

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

   269                .append(jc.getClassName()).append('.')

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

   271             out.append("};");

   272             return;

   273         }

   275         final StackMapper smapper = new StackMapper();

   277         if (!m.isStatic()) {

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

   279         }

   281         int lastStackFrame = -1;

   282         TrapData[] previousTrap = null;

   283         boolean wide = false;

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

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

   287             int prev = i;

   288             stackMapIterator.advanceTo(i);

   289             boolean changeInCatch = trap.advanceTo(i);

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

   291                 if (previousTrap != null) {

   292                     generateCatch(previousTrap);

   293                     previousTrap = null;

   294                 }

   295             }

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

   297                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   301                 changeInCatch = true;

   302             } else {

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

   304             }

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

   306                 out.append("try {");

   307                 previousTrap = trap.current();

   308             }

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

   310             switch (c) {

   311                 case opc_aload_0:

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

   313                     break;

   314                 case opc_iload_0:

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

   316                     break;

   317                 case opc_lload_0:

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

   319                     break;

   320                 case opc_fload_0:

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

   322                     break;

   323                 case opc_dload_0:

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

   325                     break;

   326                 case opc_aload_1:

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

   328                     break;

   329                 case opc_iload_1:

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

   331                     break;

   332                 case opc_lload_1:

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

   334                     break;

   335                 case opc_fload_1:

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

   337                     break;

   338                 case opc_dload_1:

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

   340                     break;

   341                 case opc_aload_2:

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

   343                     break;

   344                 case opc_iload_2:

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

   346                     break;

   347                 case opc_lload_2:

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

   349                     break;

   350                 case opc_fload_2:

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

   352                     break;

   353                 case opc_dload_2:

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

   355                     break;

   356                 case opc_aload_3:

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

   358                     break;

   359                 case opc_iload_3:

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

   361                     break;

   362                 case opc_lload_3:

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

   364                     break;

   365                 case opc_fload_3:

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

   367                     break;

   368                 case opc_dload_3:

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

   370                     break;

   371                 case opc_iload: {

   372                     ++i;

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

   374                                           : readUByte(byteCodes, i);

   375                     wide = false;

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

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

   378                     break;

   379                 }

   380                 case opc_lload: {

   381                     ++i;

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

   383                                           : readUByte(byteCodes, i);

   384                     wide = false;

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

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

   387                     break;

   388                 }

   389                 case opc_fload: {

   390                     ++i;

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

   392                                           : readUByte(byteCodes, i);

   393                     wide = false;

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

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

   396                     break;

   397                 }

   398                 case opc_dload: {

   399                     ++i;

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

   401                                           : readUByte(byteCodes, i);

   402                     wide = false;

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

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

   405                     break;

   406                 }

   407                 case opc_aload: {

   408                     ++i;

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

   410                                           : readUByte(byteCodes, i);

   411                     wide = false;

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

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

   414                     break;

   415                 }

   416                 case opc_istore: {

   417                     ++i;

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

   419                                           : readUByte(byteCodes, i);

   420                     wide = false;

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

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

   423                     break;

   424                 }

   425                 case opc_lstore: {

   426                     ++i;

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

   428                                           : readUByte(byteCodes, i);

   429                     wide = false;

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

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

   432                     break;

   433                 }

   434                 case opc_fstore: {

   435                     ++i;

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

   437                                           : readUByte(byteCodes, i);

   438                     wide = false;

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

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

   441                     break;

   442                 }

   443                 case opc_dstore: {

   444                     ++i;

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

   446                                           : readUByte(byteCodes, i);

   447                     wide = false;

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

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

   450                     break;

   451                 }

   452                 case opc_astore: {

   453                     ++i;

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

   455                                           : readUByte(byteCodes, i);

   456                     wide = false;

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

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

   459                     break;

   460                 }

   461                 case opc_astore_0:

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

   463                     break;

   464                 case opc_istore_0:

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

   466                     break;

   467                 case opc_lstore_0:

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

   469                     break;

   470                 case opc_fstore_0:

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

   472                     break;

   473                 case opc_dstore_0:

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

   475                     break;

   476                 case opc_astore_1:

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

   478                     break;

   479                 case opc_istore_1:

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

   481                     break;

   482                 case opc_lstore_1:

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

   484                     break;

   485                 case opc_fstore_1:

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

   487                     break;

   488                 case opc_dstore_1:

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

   490                     break;

   491                 case opc_astore_2:

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

   493                     break;

   494                 case opc_istore_2:

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

   496                     break;

   497                 case opc_lstore_2:

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

   499                     break;

   500                 case opc_fstore_2:

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

   502                     break;

   503                 case opc_dstore_2:

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

   505                     break;

   506                 case opc_astore_3:

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

   508                     break;

   509                 case opc_istore_3:

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

   511                     break;

   512                 case opc_lstore_3:

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

   514                     break;

   515                 case opc_fstore_3:

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

   517                     break;

   518                 case opc_dstore_3:

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

   520                     break;

   521                 case opc_iadd:

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

   523                     break;

   524                 case opc_ladd:

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

   526                     break;

   527                 case opc_fadd:

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

   529                     break;

   530                 case opc_dadd:

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

   532                     break;

   533                 case opc_isub:

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

   535                     break;

   536                 case opc_lsub:

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

   538                     break;

   539                 case opc_fsub:

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

   541                     break;

   542                 case opc_dsub:

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

   544                     break;

   545                 case opc_imul:

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

   547                     break;

   548                 case opc_lmul:

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

   550                     break;

   551                 case opc_fmul:

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

   553                     break;

   554                 case opc_dmul:

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

   556                     break;

   557                 case opc_idiv:

   558                     emit(out, "@1 = Math.floor(@1 / @2);",

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

   560                     break;

   561                 case opc_ldiv:

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

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

   564                     break;

   565                 case opc_fdiv:

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

   567                     break;

   568                 case opc_ddiv:

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

   570                     break;

   571                 case opc_irem:

   572                     emit(out, "@1 %= @2;", smapper.getI(1), smapper.popI());

   573                     break;

   574                 case opc_lrem:

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

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

   577                     break;

   578                 case opc_frem:

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

   580                     break;

   581                 case opc_drem:

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

   583                     break;

   584                 case opc_iand:

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

   586                     break;

   587                 case opc_land:

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

   589                     break;

   590                 case opc_ior:

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

   592                     break;

   593                 case opc_lor:

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

   595                     break;

   596                 case opc_ixor:

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

   598                     break;

   599                 case opc_lxor:

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

   601                     break;

   602                 case opc_ineg:

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

   604                     break;

   605                 case opc_lneg:

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

   607                     break;

   608                 case opc_fneg:

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

   610                     break;

   611                 case opc_dneg:

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

   613                     break;

   614                 case opc_ishl:

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

   616                     break;

   617                 case opc_lshl:

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

   619                     break;

   620                 case opc_ishr:

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

   622                     break;

   623                 case opc_lshr:

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

   625                     break;

   626                 case opc_iushr:

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

   628                     break;

   629                 case opc_lushr:

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

   631                     break;

   632                 case opc_iinc: {

   633                     ++i;

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

   635                                              : readUByte(byteCodes, i);

   636                     ++i;

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

   638                                             : byteCodes[i];

   639                     wide = false;

   640                     if (incrBy == 1) {

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

   642                     } else {

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

   644                              lmapper.getI(varIndx),

   645                              Integer.toString(incrBy));

   646                     }

   647                     break;

   648                 }

   649                 case opc_return:

   650                     emit(out, "return;");

   651                     break;

   652                 case opc_ireturn:

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

   654                     break;

   655                 case opc_lreturn:

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

   657                     break;

   658                 case opc_freturn:

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

   660                     break;

   661                 case opc_dreturn:

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

   663                     break;

   664                 case opc_areturn:

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

   666                     break;

   667                 case opc_i2l:

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

   669                     break;

   670                 case opc_i2f:

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

   672                     break;

   673                 case opc_i2d:

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

   675                     break;

   676                 case opc_l2i:

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

   678                     break;

   679                     // max int check?

   680                 case opc_l2f:

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

   682                     break;

   683                 case opc_l2d:

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

   685                     break;

   686                 case opc_f2d:

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

   688                     break;

   689                 case opc_d2f:

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

   691                     break;

   692                 case opc_f2i:

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

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

   695                     break;

   696                 case opc_f2l:

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

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

   699                     break;

   700                 case opc_d2i:

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

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

   703                     break;

   704                 case opc_d2l:

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

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

   707                     break;

   708                 case opc_i2b:

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

   710                     break;

   711                 case opc_i2c:

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

   713                     break;

   714                 case opc_i2s:

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

   716                     break;

   717                 case opc_aconst_null:

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

   719                     break;

   720                 case opc_iconst_m1:

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

   722                     break;

   723                 case opc_iconst_0:

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

   725                     break;

   726                 case opc_dconst_0:

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

   728                     break;

   729                 case opc_lconst_0:

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

   731                     break;

   732                 case opc_fconst_0:

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

   734                     break;

   735                 case opc_iconst_1:

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

   737                     break;

   738                 case opc_lconst_1:

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

   740                     break;

   741                 case opc_fconst_1:

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

   743                     break;

   744                 case opc_dconst_1:

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

   746                     break;

   747                 case opc_iconst_2:

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

   749                     break;

   750                 case opc_fconst_2:

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

   752                     break;

   753                 case opc_iconst_3:

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

   755                     break;

   756                 case opc_iconst_4:

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

   758                     break;

   759                 case opc_iconst_5:

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

   761                     break;

   762                 case opc_ldc: {

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

   764                     String v = encodeConstant(indx);

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

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

   767                     break;

   768                 }

   769                 case opc_ldc_w:

   770                 case opc_ldc2_w: {

   771                     int indx = readIntArg(byteCodes, i);

   772                     i += 2;

   773                     String v = encodeConstant(indx);

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

   775                     if (type == VarType.LONG) {

   776                         final Long lv = new Long(v);

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

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

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

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

   781                     } else {

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

   783                     }

   784                     break;

   785                 }

   786                 case opc_lcmp:

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

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

   789                     break;

   790                 case opc_fcmpl:

   791                 case opc_fcmpg:

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

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

   794                     break;

   795                 case opc_dcmpl:

   796                 case opc_dcmpg:

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

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

   799                     break;

   800                 case opc_if_acmpeq:

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

   802                                    "===");

   803                     break;

   804                 case opc_if_acmpne:

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

   806                                    "!=");

   807                     break;

   808                 case opc_if_icmpeq:

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

   810                                    "==");

   811                     break;

   812                 case opc_ifeq: {

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

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

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

   816                     i += 2;

   817                     break;

   818                 }

   819                 case opc_ifne: {

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

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

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

   823                     i += 2;

   824                     break;

   825                 }

   826                 case opc_iflt: {

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

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

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

   830                     i += 2;

   831                     break;

   832                 }

   833                 case opc_ifle: {

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

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

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

   837                     i += 2;

   838                     break;

   839                 }

   840                 case opc_ifgt: {

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

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

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

   844                     i += 2;

   845                     break;

   846                 }

   847                 case opc_ifge: {

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

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

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

   851                     i += 2;

   852                     break;

   853                 }

   854                 case opc_ifnonnull: {

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

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

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

   858                     i += 2;

   859                     break;

   860                 }

   861                 case opc_ifnull: {

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

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

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

   865                     i += 2;

   866                     break;

   867                 }

   868                 case opc_if_icmpne:

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

   870                                    "!=");

   871                     break;

   872                 case opc_if_icmplt:

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

   874                                    "<");

   875                     break;

   876                 case opc_if_icmple:

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

   878                                    "<=");

   879                     break;

   880                 case opc_if_icmpgt:

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

   882                                    ">");

   883                     break;

   884                 case opc_if_icmpge:

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

   886                                    ">=");

   887                     break;

   888                 case opc_goto: {

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

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

   891                     i += 2;

   892                     break;

   893                 }

   894                 case opc_lookupswitch: {

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

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

   897                     table += 4;

   898                     int n = readInt4(byteCodes, table);

   899                     table += 4;

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

   901                     while (n-- > 0) {

   902                         int cnstnt = readInt4(byteCodes, table);

   903                         table += 4;

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

   905                         table += 4;

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

   907                     }

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

   909                     i = table - 1;

   910                     break;

   911                 }

   912                 case opc_tableswitch: {

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

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

   915                     table += 4;

   916                     int low = readInt4(byteCodes, table);

   917                     table += 4;

   918                     int high = readInt4(byteCodes, table);

   919                     table += 4;

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

   921                     while (low <= high) {

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

   923                         table += 4;

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

   925                         low++;

   926                     }

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

   928                     i = table - 1;

   929                     break;

   930                 }

   931                 case opc_invokeinterface: {

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

   933                     break;

   934                 }

   935                 case opc_invokevirtual:

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

   937                     break;

   938                 case opc_invokespecial:

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

   940                     break;

   941                 case opc_invokestatic:

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

   943                     break;

   944                 case opc_new: {

   945                     int indx = readIntArg(byteCodes, i);

   946                     String ci = jc.getClassName(indx);

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

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

   949                     addReference(ci);

   950                     i += 2;

   951                     break;

   952                 }

   953                 case opc_newarray:

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

   955                     String jvmType;

   956                     switch (atype) {

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

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

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

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

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

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

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

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

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

   966                     }

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

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

   969                     break;

   970                 case opc_anewarray: {

   971                     int type = readIntArg(byteCodes, i);

   972                     i += 2;

   973                     String typeName = jc.getClassName(type);

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

   975                         typeName = "[" + typeName;

   976                     } else {

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

   978                     }

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

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

   981                     break;

   982                 }

   983                 case opc_multianewarray: {

   984                     int type = readIntArg(byteCodes, i);

   985                     i += 2;

   986                     String typeName = jc.getClassName(type);

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

   988                     StringBuilder dims = new StringBuilder();

   989                     dims.append('[');

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

   991                         if (d != 0) {

   992                             dims.append(",");

   993                         }

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

   995                     }

   996                     dims.append(']');

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

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

   999                     break;

  1000                 }

  1001                 case opc_arraylength:

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

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

  1004                     break;

  1005                 case opc_lastore:

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

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

  1008                     break;

  1009                 case opc_fastore:

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

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

  1012                     break;

  1013                 case opc_dastore:

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

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

  1016                     break;

  1017                 case opc_aastore:

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

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

  1020                     break;

  1021                 case opc_iastore:

  1022                 case opc_bastore:

  1023                 case opc_castore:

  1024                 case opc_sastore:

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

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

  1027                     break;

  1028                 case opc_laload:

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

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

  1031                     break;

  1032                 case opc_faload:

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

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

  1035                     break;

  1036                 case opc_daload:

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

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

  1039                     break;

  1040                 case opc_aaload:

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

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

  1043                     break;

  1044                 case opc_iaload:

  1045                 case opc_baload:

  1046                 case opc_caload:

  1047                 case opc_saload:

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

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

  1050                     break;

  1051                 case opc_pop:

  1052                 case opc_pop2:

  1053                     smapper.pop(1);

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

  1055                     break;

  1056                 case opc_dup: {

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

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

  1059                     break;

  1060                 }

  1061                 case opc_dup2: {

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

  1064                     if (vi1.isCategory2()) {

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

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

  1067                     } else {

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

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

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

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

  1072                     }

  1073                     break;

  1074                 }

  1075                 case opc_dup_x1: {

  1076                     final Variable vi1 = smapper.pop();

  1077                     final Variable vi2 = smapper.pop();

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

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

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

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

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

  1084                     break;

  1085                 }

  1086                 case opc_dup2_x1: {

  1087                     final Variable vi1 = smapper.pop();

  1088                     final Variable vi2 = smapper.pop();

  1090                     if (vi1.isCategory2()) {

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

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

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

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

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

  1097                     } else {

  1098                         final Variable vi3 = smapper.pop();

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

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

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

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

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

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

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

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

  1108                              vo4, vo1, vo5, vo2);

  1109                     }

  1110                     break;

  1111                 }

  1112                 case opc_dup_x2: {

  1113                     final Variable vi1 = smapper.pop();

  1114                     final Variable vi2 = smapper.pop();

  1116                     if (vi2.isCategory2()) {

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

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

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

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

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

  1123                     } else {

  1124                         final Variable vi3 = smapper.pop();

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

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

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

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

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

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

  1132                     }

  1133                     break;

  1134                 }

  1135                 case opc_dup2_x2: {

  1136                     final Variable vi1 = smapper.pop();

  1137                     final Variable vi2 = smapper.pop();

  1139                     if (vi1.isCategory2()) {

  1140                         if (vi2.isCategory2()) {

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

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

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

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

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

  1147                         } else {

  1148                             final Variable vi3 = smapper.pop();

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

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

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

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

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

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

  1156                         }

  1157                     } else {

  1158                         final Variable vi3 = smapper.pop();

  1160                         if (vi3.isCategory2()) {

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

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

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

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

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

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

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

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

  1170                                  vo4, vo1, vo5, vo2);

  1171                         } else {

  1172                             final Variable vi4 = smapper.pop();

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

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

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

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

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

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

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

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

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

  1183                                  vo5, vo1, vo6, vo2);

  1184                         }

  1185                     }

  1186                     break;

  1187                 }

  1188                 case opc_swap: {

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

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

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

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

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

  1196                              tmp, vi1, vi2);

  1197                         smapper.pop(1);

  1198                     } else {

  1199                         smapper.pop(2);

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

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

  1202                     }

  1203                     break;

  1204                 }

  1205                 case opc_bipush:

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

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

  1208                     break;

  1209                 case opc_sipush:

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

  1211                          smapper.pushI(),

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

  1213                     i += 2;

  1214                     break;

  1215                 case opc_getfield: {

  1216                     int indx = readIntArg(byteCodes, i);

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

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

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

  1220                     final String mangleClassAccess = accessClass(mangleClass);

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

  1222                          smapper.popA(),

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

  1224                     );

  1225                     i += 2;

  1226                     break;

  1227                 }

  1228                 case opc_putfield: {

  1229                     int indx = readIntArg(byteCodes, i);

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

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

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

  1233                     final String mangleClassAccess = accessClass(mangleClass);

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

  1235                          smapper.popT(type),

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

  1237                          mangleClassAccess

  1238                     );

  1239                     i += 2;

  1240                     break;

  1241                 }

  1242                 case opc_getstatic: {

  1243                     int indx = readIntArg(byteCodes, i);

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

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

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

  1247                          smapper.pushT(type),

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

  1249                     i += 2;

  1250                     addReference(fi[0]);

  1251                     break;

  1252                 }

  1253                 case opc_putstatic: {

  1254                     int indx = readIntArg(byteCodes, i);

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

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

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

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

  1259                          smapper.popT(type));

  1260                     i += 2;

  1261                     addReference(fi[0]);

  1262                     break;

  1263                 }

  1264                 case opc_checkcast: {

  1265                     int indx = readIntArg(byteCodes, i);

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

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

  1268                         emit(out,

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

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

  1271                     } else {

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

  1273                              smapper.getA(0), type

  1274                         );

  1275                     }

  1276                     i += 2;

  1277                     break;

  1278                 }

  1279                 case opc_instanceof: {

  1280                     int indx = readIntArg(byteCodes, i);

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

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

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

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

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

  1286                     } else {

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

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

  1289                             type

  1290                         );

  1291                     }

  1292                     i += 2;

  1293                     break;

  1294                 }

  1295                 case opc_athrow: {

  1296                     final Variable v = smapper.popA();

  1297                     smapper.clear();

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

  1300                          smapper.pushA(), v);

  1301                     break;

  1302                 }

  1304                 case opc_monitorenter: {

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

  1306                     smapper.popA();

  1307                     break;

  1308                 }

  1310                 case opc_monitorexit: {

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

  1312                     smapper.popA();

  1313                     break;

  1314                 }

  1316                 case opc_wide:

  1317                     wide = true;

  1318                     break;

  1320                 default: {

  1321                     wide = false;

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

  1323                          Integer.toString(c));

  1324                 }

  1325             }

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

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

  1328                     out.append(" ");

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

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

  1331                 }

  1332             }

  1333             out.append("\n");

  1334         }

  1335         if (previousTrap != null) {

  1336             generateCatch(previousTrap);

  1337         }

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

  1339         out.append("};");

  1340     }

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

  1343                            final Variable v2, final Variable v1,

  1344                            final String test) throws IOException {

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

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

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

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

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

  1350         return i + 2;

  1351     }

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

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

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

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

  1357     }

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

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

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

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

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

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

  1364     }

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

  1366         return byteCodes[offsetInstruction] & 0xff;

  1367     }

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

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

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

  1372     }

  1374     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1375         int i = 0;

  1376         Boolean count = null;

  1377         boolean array = false;

  1378         sig.append("__");

  1379         int firstPos = sig.length();

  1380         while (i < descriptor.length()) {

  1381             char ch = descriptor.charAt(i++);

  1382             switch (ch) {

  1383                 case '(':

  1384                     count = true;

  1385                     continue;

  1386                 case ')':

  1387                     count = false;

  1388                     continue;

  1389                 case 'B':

  1390                 case 'C':

  1391                 case 'D':

  1392                 case 'F':

  1393                 case 'I':

  1394                 case 'J':

  1395                 case 'S':

  1396                 case 'Z':

  1397                     if (count) {

  1398                         if (array) {

  1399                             sig.append("_3");

  1400                         }

  1401                         sig.append(ch);

  1402                         if (ch == 'J' || ch == 'D') {

  1403                             cnt.append('1');

  1404                         } else {

  1405                             cnt.append('0');

  1406                         }

  1407                     } else {

  1408                         sig.insert(firstPos, ch);

  1409                         if (array) {

  1410                             returnType[0] = '[';

  1411                             sig.insert(firstPos, "_3");

  1412                         } else {

  1413                             returnType[0] = ch;

  1414                         }

  1415                     }

  1416                     array = false;

  1417                     continue;

  1418                 case 'V':

  1419                     assert !count;

  1420                     returnType[0] = 'V';

  1421                     sig.insert(firstPos, 'V');

  1422                     continue;

  1423                 case 'L':

  1424                     int next = descriptor.indexOf(';', i);

  1425                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1426                     if (count) {

  1427                         if (array) {

  1428                             sig.append("_3");

  1429                         }

  1430                         sig.append(realSig);

  1431                         cnt.append('0');

  1432                     } else {

  1433                         sig.insert(firstPos, realSig);

  1434                         if (array) {

  1435                             sig.insert(firstPos, "_3");

  1436                         }

  1437                         returnType[0] = 'L';

  1438                     }

  1439                     i = next + 1;

  1440                     array = false;

  1441                     continue;

  1442                 case '[':

  1443                     array = true;

  1444                     continue;

  1445                 default:

  1446                     throw new IllegalStateException("Invalid char: " + ch);

  1447             }

  1448         }

  1449     }

  1451     static String mangleSig(String sig) {

  1452         return mangleSig(sig, 0, sig.length());

  1453     }

  1455     private static String mangleSig(String txt, int first, int last) {

  1456         StringBuilder sb = new StringBuilder();

  1457         for (int i = first; i < last; i++) {

  1458             final char ch = txt.charAt(i);

  1459             switch (ch) {

  1460                 case '/': sb.append('_'); break;

  1461                 case '_': sb.append("_1"); break;

  1462                 case ';': sb.append("_2"); break;

  1463                 case '[': sb.append("_3"); break;

  1464                 default: sb.append(ch); break;

  1465             }

  1466         }

  1467         return sb.toString();

  1468     }

  1470     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1471         StringBuilder name = new StringBuilder();

  1472         if ("<init>".equals(m.getName())) { // NOI18N

  1473             name.append("cons"); // NOI18N

  1474         } else if ("<clinit>".equals(m.getName())) { // NOI18N

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

  1476         } else {

  1477             name.append(m.getName());

  1478         }

  1480         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1481         return name.toString();

  1482     }

  1484     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1485         StringBuilder name = new StringBuilder();

  1486         String descr = mi[2];//mi.getDescriptor();

  1487         String nm= mi[1];

  1488         if ("<init>".equals(nm)) { // NOI18N

  1489             name.append("cons"); // NOI18N

  1490         } else {

  1491             name.append(nm);

  1492         }

  1493         countArgs(descr, returnType, name, cnt);

  1494         return name.toString();

  1495     }

  1497     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1498     throws IOException {

  1499         int methodIndex = readIntArg(byteCodes, i);

  1500         String[] mi = jc.getFieldInfoName(methodIndex);

  1501         char[] returnType = { 'V' };

  1502         StringBuilder cnt = new StringBuilder();

  1503         String mn = findMethodName(mi, cnt, returnType);

  1505         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1506         final Variable[] vars = new Variable[numArguments];

  1508         for (int j = numArguments - 1; j >= 0; --j) {

  1509             vars[j] = mapper.pop();

  1510         }

  1512         if (returnType[0] != 'V') {

  1513             out.append("var ")

  1514                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1515                .append(" = ");

  1516         }

  1518         final String in = mi[0];

  1519         out.append(accessClass(in.replace('/', '_')));

  1520         out.append("(false).");

  1521         if (mn.startsWith("cons_")) {

  1522             out.append("constructor.");

  1523         }

  1524         out.append(mn);

  1525         if (isStatic) {

  1526             out.append('(');

  1527         } else {

  1528             out.append(".call(");

  1529         }

  1530         if (numArguments > 0) {

  1531             out.append(vars[0]);

  1532             for (int j = 1; j < numArguments; ++j) {

  1533                 out.append(", ");

  1534                 out.append(vars[j]);

  1535             }

  1536         }

  1537         out.append(");");

  1538         i += 2;

  1539         addReference(in);

  1540         return i;

  1541     }

  1542     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1543     throws IOException {

  1544         int methodIndex = readIntArg(byteCodes, i);

  1545         String[] mi = jc.getFieldInfoName(methodIndex);

  1546         char[] returnType = { 'V' };

  1547         StringBuilder cnt = new StringBuilder();

  1548         String mn = findMethodName(mi, cnt, returnType);

  1550         final int numArguments = cnt.length() + 1;

  1551         final Variable[] vars = new Variable[numArguments];

  1553         for (int j = numArguments - 1; j >= 0; --j) {

  1554             vars[j] = mapper.pop();

  1555         }

  1557         if (returnType[0] != 'V') {

  1558             out.append("var ")

  1559                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1560                .append(" = ");

  1561         }

  1563         out.append(vars[0]).append('.');

  1564         out.append(mn);

  1565         out.append('(');

  1566         String sep = "";

  1567         for (int j = 1; j < numArguments; ++j) {

  1568             out.append(sep);

  1569             out.append(vars[j]);

  1570             sep = ", ";

  1571         }

  1572         out.append(");");

  1573         i += 2;

  1574         return i;

  1575     }

  1577     private void addReference(String cn) throws IOException {

  1578         if (requireReference(cn)) {

  1579             debug(" /* needs " + cn + " */");

  1580         }

  1581     }

  1583     private void outType(String d, StringBuilder out) {

  1584         int arr = 0;

  1585         while (d.charAt(0) == '[') {

  1586             out.append('A');

  1587             d = d.substring(1);

  1588         }

  1589         if (d.charAt(0) == 'L') {

  1590             assert d.charAt(d.length() - 1) == ';';

  1591             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1592         } else {

  1593             out.append(d);

  1594         }

  1595     }

  1597     private String encodeConstant(int entryIndex) throws IOException {

  1598         String[] classRef = { null };

  1599         String s = jc.stringValue(entryIndex, classRef);

  1600         if (classRef[0] != null) {

  1601             if (classRef[0].startsWith("[")) {

  1602                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1603             } else {

  1604                 addReference(classRef[0]);

  1605                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1606             }

  1607         }

  1608         return s;

  1609     }

  1611     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1612         byte[] arr = m.findAnnotationData(true);

  1613         if (arr == null) {

  1614             return null;

  1615         }

  1616         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1617         class P extends AnnotationParser {

  1618             public P() {

  1619                 super(false, true);

  1620             }

  1622             int cnt;

  1623             String[] args = new String[30];

  1624             String body;

  1626             @Override

  1627             protected void visitAttr(String type, String attr, String at, String value) {

  1628                 if (type.equals(jvmType)) {

  1629                     if ("body".equals(attr)) {

  1630                         body = value;

  1631                     } else if ("args".equals(attr)) {

  1632                         args[cnt++] = value;

  1633                     } else {

  1634                         throw new IllegalArgumentException(attr);

  1635                     }

  1636                 }

  1637             }

  1638         }

  1639         P p = new P();

  1640         p.parse(arr, jc);

  1641         if (p.body == null) {

  1642             return null;

  1643         }

  1644         StringBuilder cnt = new StringBuilder();

  1645         final String mn = findMethodName(m, cnt);

  1646         out.append(prefix).append(mn);

  1647         out.append(" = function(");

  1648         String space = "";

  1649         int index = 0;

  1650         for (int i = 0; i < cnt.length(); i++) {

  1651             out.append(space);

  1652             space = outputArg(out, p.args, index);

  1653             index++;

  1654         }

  1655         out.append(") {").append("\n");

  1656         out.append(p.body);

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

  1658         return mn;

  1659     }

  1660     private static String className(ClassData jc) {

  1661         //return jc.getName().getInternalName().replace('/', '_');

  1662         return jc.getClassName().replace('/', '_');

  1663     }

  1665     private static String[] findAnnotation(

  1666         byte[] arr, ClassData cd, final String className,

  1667         final String... attrNames

  1668     ) throws IOException {

  1669         if (arr == null) {

  1670             return null;

  1671         }

  1672         final String[] values = new String[attrNames.length];

  1673         final boolean[] found = { false };

  1674         final String jvmType = "L" + className.replace('.', '/') + ";";

  1675         AnnotationParser ap = new AnnotationParser(false, true) {

  1676             @Override

  1677             protected void visitAttr(String type, String attr, String at, String value) {

  1678                 if (type.equals(jvmType)) {

  1679                     found[0] = true;

  1680                     for (int i = 0; i < attrNames.length; i++) {

  1681                         if (attrNames[i].equals(attr)) {

  1682                             values[i] = value;

  1683                         }

  1684                     }

  1685                 }

  1686             }

  1688         };

  1689         ap.parse(arr, cd);

  1690         return found[0] ? values : null;

  1691     }

  1693     private CharSequence initField(FieldData v) {

  1694         final String is = v.getInternalSig();

  1695         if (is.length() == 1) {

  1696             switch (is.charAt(0)) {

  1697                 case 'S':

  1698                 case 'J':

  1699                 case 'B':

  1700                 case 'Z':

  1701                 case 'C':

  1702                 case 'I': return " = 0;";

  1703                 case 'F':

  1704                 case 'D': return " = 0.0;";

  1705                 default:

  1706                     throw new IllegalStateException(is);

  1707             }

  1708         }

  1709         return " = null;";

  1710     }

  1712     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1713         AnnotationParser ap = new AnnotationParser(true, false) {

  1714             int[] cnt = new int[32];

  1715             int depth;

  1717             @Override

  1718             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1719                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1720                 requireReference(slashType);

  1722                 if (cnt[depth]++ > 0) {

  1723                     out.append(",");

  1724                 }

  1725                 if (top) {

  1726                     out.append('"').append(attrType).append("\" : ");

  1727                 }

  1728                 out.append("{\n");

  1729                 cnt[++depth] = 0;

  1730             }

  1732             @Override

  1733             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1734                 out.append("\n}\n");

  1735                 depth--;

  1736             }

  1738             @Override

  1739             protected void visitValueStart(String attrName, char type) throws IOException {

  1740                 if (cnt[depth]++ > 0) {

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

  1742                 }

  1743                 cnt[++depth] = 0;

  1744                 if (attrName != null) {

  1745                     out.append(attrName).append(" : ");

  1746                 }

  1747                 if (type == '[') {

  1748                     out.append("[");

  1749                 }

  1750             }

  1752             @Override

  1753             protected void visitValueEnd(String attrName, char type) throws IOException {

  1754                 if (type == '[') {

  1755                     out.append("]");

  1756                 }

  1757                 depth--;

  1758             }

  1760             @Override

  1761             protected void visitAttr(String type, String attr, String attrType, String value)

  1762             throws IOException {

  1763                 if (attr == null && value == null) {

  1764                     return;

  1765                 }

  1766                 out.append(value);

  1767             }

  1769             @Override

  1770             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1771             throws IOException {

  1772                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1773                 requireReference(slashType);

  1775                 out.append(accessClass(slashType.replace('/', '_')))

  1776                    .append("(false).constructor.").append(value);

  1777             }

  1778         };

  1779         ap.parse(data, cd);

  1780     }

  1782     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1783         final String name = args[indx];

  1784         if (name == null) {

  1785             return "";

  1786         }

  1787         if (name.contains(",")) {

  1788             throw new IOException("Wrong parameter with ',': " + name);

  1789         }

  1790         out.append(name);

  1791         return ",";

  1792     }

  1794     private static void emit(final Appendable out,

  1795                              final String format,

  1796                              final CharSequence... params) throws IOException {

  1797         final int length = format.length();

  1799         int processed = 0;

  1800         int paramOffset = format.indexOf('@');

  1801         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1802             final char paramChar = format.charAt(paramOffset + 1);

  1803             if ((paramChar >= '1') && (paramChar <= '9')) {

  1804                 final int paramIndex = paramChar - '0' - 1;

  1806                 out.append(format, processed, paramOffset);

  1807                 out.append(params[paramIndex]);

  1809                 ++paramOffset;

  1810                 processed = paramOffset + 1;

  1811             }

  1813             paramOffset = format.indexOf('@', paramOffset + 1);

  1814         }

  1816         out.append(format, processed, length);

  1817     }

  1819     private void generateCatch(TrapData[] traps) throws IOException {

  1820         out.append("} catch (e) {\n");

  1821         int finallyPC = -1;

  1822         for (TrapData e : traps) {

  1823             if (e == null) {

  1824                 break;

  1825             }

  1826             if (e.catch_cpx != 0) { //not finally

  1827                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1828                 addReference(classInternalName);

  1829                 if ("java/lang/Throwable".equals(classInternalName)) {

  1830                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1831                     out.append("  var stA0 = e;");

  1832                     out.append("} else {");

  1833                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1834                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1835                     out.append("}");

  1836                     out.append("gt=" + e.handler_pc + "; continue;");

  1837                 } else {

  1838                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1839                     out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");

  1840                     out.append("}\n");

  1841                 }

  1842             } else {

  1843                 finallyPC = e.handler_pc;

  1844             }

  1845         }

  1846         if (finallyPC == -1) {

  1847             out.append("throw e;");

  1848         } else {

  1849             out.append("gt=" + finallyPC + "; var stA0 = e; continue;");

  1850         }

  1851         out.append("\n}");

  1852     }

  1853 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Mon, 11 Feb 2013 19:55:00 +0100
branch	emul
changeset 711	333326d65bf9
parent 695	dbcd1a21f3f8
child 747	ae352b763959
permissions	-rw-r--r--