hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@d382dacfd73f

     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 = @1.div32(@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 = @1.mod32(@2);",

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

   574                     break;

   575                 case opc_lrem:

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

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

   578                     break;

   579                 case opc_frem:

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

   581                     break;

   582                 case opc_drem:

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

   584                     break;

   585                 case opc_iand:

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

   587                     break;

   588                 case opc_land:

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

   590                     break;

   591                 case opc_ior:

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

   593                     break;

   594                 case opc_lor:

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

   596                     break;

   597                 case opc_ixor:

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

   599                     break;

   600                 case opc_lxor:

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

   602                     break;

   603                 case opc_ineg:

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

   605                     break;

   606                 case opc_lneg:

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

   608                     break;

   609                 case opc_fneg:

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

   611                     break;

   612                 case opc_dneg:

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

   614                     break;

   615                 case opc_ishl:

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

   617                     break;

   618                 case opc_lshl:

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

   620                     break;

   621                 case opc_ishr:

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

   623                     break;

   624                 case opc_lshr:

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

   626                     break;

   627                 case opc_iushr:

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

   629                     break;

   630                 case opc_lushr:

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

   632                     break;

   633                 case opc_iinc: {

   634                     ++i;

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

   636                                              : readUByte(byteCodes, i);

   637                     ++i;

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

   639                                             : byteCodes[i];

   640                     wide = false;

   641                     if (incrBy == 1) {

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

   643                     } else {

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

   645                              lmapper.getI(varIndx),

   646                              Integer.toString(incrBy));

   647                     }

   648                     break;

   649                 }

   650                 case opc_return:

   651                     emit(out, "return;");

   652                     break;

   653                 case opc_ireturn:

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

   655                     break;

   656                 case opc_lreturn:

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

   658                     break;

   659                 case opc_freturn:

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

   661                     break;

   662                 case opc_dreturn:

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

   664                     break;

   665                 case opc_areturn:

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

   667                     break;

   668                 case opc_i2l:

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

   670                     break;

   671                 case opc_i2f:

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

   673                     break;

   674                 case opc_i2d:

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

   676                     break;

   677                 case opc_l2i:

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

   679                     break;

   680                     // max int check?

   681                 case opc_l2f:

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

   683                     break;

   684                 case opc_l2d:

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

   686                     break;

   687                 case opc_f2d:

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

   689                     break;

   690                 case opc_d2f:

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

   692                     break;

   693                 case opc_f2i:

   694                     emit(out, "var @2 = Math.floor(@1).toInt32();",

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

   696                     break;

   697                 case opc_f2l:

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

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

   700                     break;

   701                 case opc_d2i:

   702                     emit(out, "var @2 = Math.floor(@1).toInt32();",

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

   704                     break;

   705                 case opc_d2l:

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

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

   708                     break;

   709                 case opc_i2b:

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

   711                     break;

   712                 case opc_i2c:

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

   714                     break;

   715                 case opc_i2s:

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

   717                     break;

   718                 case opc_aconst_null:

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

   720                     break;

   721                 case opc_iconst_m1:

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

   723                     break;

   724                 case opc_iconst_0:

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

   726                     break;

   727                 case opc_dconst_0:

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

   729                     break;

   730                 case opc_lconst_0:

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

   732                     break;

   733                 case opc_fconst_0:

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

   735                     break;

   736                 case opc_iconst_1:

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

   738                     break;

   739                 case opc_lconst_1:

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

   741                     break;

   742                 case opc_fconst_1:

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

   744                     break;

   745                 case opc_dconst_1:

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

   747                     break;

   748                 case opc_iconst_2:

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

   750                     break;

   751                 case opc_fconst_2:

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

   753                     break;

   754                 case opc_iconst_3:

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

   756                     break;

   757                 case opc_iconst_4:

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

   759                     break;

   760                 case opc_iconst_5:

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

   762                     break;

   763                 case opc_ldc: {

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

   765                     String v = encodeConstant(indx);

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

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

   768                     break;

   769                 }

   770                 case opc_ldc_w:

   771                 case opc_ldc2_w: {

   772                     int indx = readIntArg(byteCodes, i);

   773                     i += 2;

   774                     String v = encodeConstant(indx);

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

   776                     if (type == VarType.LONG) {

   777                         final Long lv = new Long(v);

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

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

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

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

   782                     } else {

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

   784                     }

   785                     break;

   786                 }

   787                 case opc_lcmp:

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

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

   790                     break;

   791                 case opc_fcmpl:

   792                 case opc_fcmpg:

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

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

   795                     break;

   796                 case opc_dcmpl:

   797                 case opc_dcmpg:

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

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

   800                     break;

   801                 case opc_if_acmpeq:

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

   803                                    "===");

   804                     break;

   805                 case opc_if_acmpne:

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

   807                                    "!=");

   808                     break;

   809                 case opc_if_icmpeq:

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

   811                                    "==");

   812                     break;

   813                 case opc_ifeq: {

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

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

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

   817                     i += 2;

   818                     break;

   819                 }

   820                 case opc_ifne: {

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

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

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

   824                     i += 2;

   825                     break;

   826                 }

   827                 case opc_iflt: {

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

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

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

   831                     i += 2;

   832                     break;

   833                 }

   834                 case opc_ifle: {

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

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

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

   838                     i += 2;

   839                     break;

   840                 }

   841                 case opc_ifgt: {

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

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

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

   845                     i += 2;

   846                     break;

   847                 }

   848                 case opc_ifge: {

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

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

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

   852                     i += 2;

   853                     break;

   854                 }

   855                 case opc_ifnonnull: {

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

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

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

   859                     i += 2;

   860                     break;

   861                 }

   862                 case opc_ifnull: {

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

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

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

   866                     i += 2;

   867                     break;

   868                 }

   869                 case opc_if_icmpne:

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

   871                                    "!=");

   872                     break;

   873                 case opc_if_icmplt:

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

   875                                    "<");

   876                     break;

   877                 case opc_if_icmple:

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

   879                                    "<=");

   880                     break;

   881                 case opc_if_icmpgt:

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

   883                                    ">");

   884                     break;

   885                 case opc_if_icmpge:

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

   887                                    ">=");

   888                     break;

   889                 case opc_goto: {

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

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

   892                     i += 2;

   893                     break;

   894                 }

   895                 case opc_lookupswitch: {

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

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

   898                     table += 4;

   899                     int n = readInt4(byteCodes, table);

   900                     table += 4;

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

   902                     while (n-- > 0) {

   903                         int cnstnt = readInt4(byteCodes, table);

   904                         table += 4;

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

   906                         table += 4;

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

   908                     }

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

   910                     i = table - 1;

   911                     break;

   912                 }

   913                 case opc_tableswitch: {

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

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

   916                     table += 4;

   917                     int low = readInt4(byteCodes, table);

   918                     table += 4;

   919                     int high = readInt4(byteCodes, table);

   920                     table += 4;

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

   922                     while (low <= high) {

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

   924                         table += 4;

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

   926                         low++;

   927                     }

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

   929                     i = table - 1;

   930                     break;

   931                 }

   932                 case opc_invokeinterface: {

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

   934                     break;

   935                 }

   936                 case opc_invokevirtual:

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

   938                     break;

   939                 case opc_invokespecial:

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

   941                     break;

   942                 case opc_invokestatic:

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

   944                     break;

   945                 case opc_new: {

   946                     int indx = readIntArg(byteCodes, i);

   947                     String ci = jc.getClassName(indx);

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

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

   950                     addReference(ci);

   951                     i += 2;

   952                     break;

   953                 }

   954                 case opc_newarray:

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

   956                     String jvmType;

   957                     switch (atype) {

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

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

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

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

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

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

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

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

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

   967                     }

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

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

   970                     break;

   971                 case opc_anewarray: {

   972                     int type = readIntArg(byteCodes, i);

   973                     i += 2;

   974                     String typeName = jc.getClassName(type);

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

   976                         typeName = "[" + typeName;

   977                     } else {

   978                         typeName = "[L" + typeName + ";";

   979                     }

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

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

   982                     break;

   983                 }

   984                 case opc_multianewarray: {

   985                     int type = readIntArg(byteCodes, i);

   986                     i += 2;

   987                     String typeName = jc.getClassName(type);

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

   989                     StringBuilder dims = new StringBuilder();

   990                     dims.append('[');

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

   992                         if (d != 0) {

   993                             dims.append(",");

   994                         }

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

   996                     }

   997                     dims.append(']');

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

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

  1000                     break;

  1001                 }

  1002                 case opc_arraylength:

  1003                     emit(out, "var @2 = @1.length;",

  1004                          smapper.popA(), smapper.pushI());

  1005                     break;

  1006                 case opc_lastore:

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

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

  1009                     break;

  1010                 case opc_fastore:

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

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

  1013                     break;

  1014                 case opc_dastore:

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

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

  1017                     break;

  1018                 case opc_aastore:

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

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

  1021                     break;

  1022                 case opc_iastore:

  1023                 case opc_bastore:

  1024                 case opc_castore:

  1025                 case opc_sastore:

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

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

  1028                     break;

  1029                 case opc_laload:

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

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

  1032                     break;

  1033                 case opc_faload:

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

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

  1036                     break;

  1037                 case opc_daload:

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

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

  1040                     break;

  1041                 case opc_aaload:

  1042                     emit(out, "var @3 = @2.at(@1);",

  1043                          smapper.popI(), smapper.popA(), smapper.pushA());

  1044                     break;

  1045                 case opc_iaload:

  1046                 case opc_baload:

  1047                 case opc_caload:

  1048                 case opc_saload:

  1049                     emit(out, "var @3 = @2.at(@1);",

  1050                          smapper.popI(), smapper.popA(), smapper.pushI());

  1051                     break;

  1052                 case opc_pop:

  1053                 case opc_pop2:

  1054                     smapper.pop(1);

  1055                     debug("/* pop */");

  1056                     break;

  1057                 case opc_dup: {

  1058                     final Variable v = smapper.get(0);

  1059                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1060                     break;

  1061                 }

  1062                 case opc_dup2: {

  1063                     final Variable vi1 = smapper.get(0);

  1065                     if (vi1.isCategory2()) {

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

  1067                              smapper.pushT(vi1.getType()), vi1);

  1068                     } else {

  1069                         final Variable vi2 = smapper.get(1);

  1070                         emit(out, "var @1 = @2, @3 = @4;",

  1071                              smapper.pushT(vi2.getType()), vi2,

  1072                              smapper.pushT(vi1.getType()), vi1);

  1073                     }

  1074                     break;

  1075                 }

  1076                 case opc_dup_x1: {

  1077                     final Variable vi1 = smapper.pop();

  1078                     final Variable vi2 = smapper.pop();

  1079                     final Variable vo3 = smapper.pushT(vi1.getType());

  1080                     final Variable vo2 = smapper.pushT(vi2.getType());

  1081                     final Variable vo1 = smapper.pushT(vi1.getType());

  1083                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1084                          vo1, vi1, vo2, vi2, vo3, vo1);

  1085                     break;

  1086                 }

  1087                 case opc_dup2_x1: {

  1088                     final Variable vi1 = smapper.pop();

  1089                     final Variable vi2 = smapper.pop();

  1091                     if (vi1.isCategory2()) {

  1092                         final Variable vo3 = smapper.pushT(vi1.getType());

  1093                         final Variable vo2 = smapper.pushT(vi2.getType());

  1094                         final Variable vo1 = smapper.pushT(vi1.getType());

  1096                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1097                              vo1, vi1, vo2, vi2, vo3, vo1);

  1098                     } else {

  1099                         final Variable vi3 = smapper.pop();

  1100                         final Variable vo5 = smapper.pushT(vi2.getType());

  1101                         final Variable vo4 = smapper.pushT(vi1.getType());

  1102                         final Variable vo3 = smapper.pushT(vi3.getType());

  1103                         final Variable vo2 = smapper.pushT(vi2.getType());

  1104                         final Variable vo1 = smapper.pushT(vi1.getType());

  1106                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1107                              vo1, vi1, vo2, vi2, vo3, vi3);

  1108                         emit(out, " @1 = @2, @3 = @4;",

  1109                              vo4, vo1, vo5, vo2);

  1110                     }

  1111                     break;

  1112                 }

  1113                 case opc_dup_x2: {

  1114                     final Variable vi1 = smapper.pop();

  1115                     final Variable vi2 = smapper.pop();

  1117                     if (vi2.isCategory2()) {

  1118                         final Variable vo3 = smapper.pushT(vi1.getType());

  1119                         final Variable vo2 = smapper.pushT(vi2.getType());

  1120                         final Variable vo1 = smapper.pushT(vi1.getType());

  1122                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1123                              vo1, vi1, vo2, vi2, vo3, vo1);

  1124                     } else {

  1125                         final Variable vi3 = smapper.pop();

  1126                         final Variable vo4 = smapper.pushT(vi1.getType());

  1127                         final Variable vo3 = smapper.pushT(vi3.getType());

  1128                         final Variable vo2 = smapper.pushT(vi2.getType());

  1129                         final Variable vo1 = smapper.pushT(vi1.getType());

  1131                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1132                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1133                     }

  1134                     break;

  1135                 }

  1136                 case opc_dup2_x2: {

  1137                     final Variable vi1 = smapper.pop();

  1138                     final Variable vi2 = smapper.pop();

  1140                     if (vi1.isCategory2()) {

  1141                         if (vi2.isCategory2()) {

  1142                             final Variable vo3 = smapper.pushT(vi1.getType());

  1143                             final Variable vo2 = smapper.pushT(vi2.getType());

  1144                             final Variable vo1 = smapper.pushT(vi1.getType());

  1146                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1147                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1148                         } else {

  1149                             final Variable vi3 = smapper.pop();

  1150                             final Variable vo4 = smapper.pushT(vi1.getType());

  1151                             final Variable vo3 = smapper.pushT(vi3.getType());

  1152                             final Variable vo2 = smapper.pushT(vi2.getType());

  1153                             final Variable vo1 = smapper.pushT(vi1.getType());

  1155                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1156                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1157                         }

  1158                     } else {

  1159                         final Variable vi3 = smapper.pop();

  1161                         if (vi3.isCategory2()) {

  1162                             final Variable vo5 = smapper.pushT(vi2.getType());

  1163                             final Variable vo4 = smapper.pushT(vi1.getType());

  1164                             final Variable vo3 = smapper.pushT(vi3.getType());

  1165                             final Variable vo2 = smapper.pushT(vi2.getType());

  1166                             final Variable vo1 = smapper.pushT(vi1.getType());

  1168                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1169                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1170                             emit(out, " @1 = @2, @3 = @4;",

  1171                                  vo4, vo1, vo5, vo2);

  1172                         } else {

  1173                             final Variable vi4 = smapper.pop();

  1174                             final Variable vo6 = smapper.pushT(vi2.getType());

  1175                             final Variable vo5 = smapper.pushT(vi1.getType());

  1176                             final Variable vo4 = smapper.pushT(vi4.getType());

  1177                             final Variable vo3 = smapper.pushT(vi3.getType());

  1178                             final Variable vo2 = smapper.pushT(vi2.getType());

  1179                             final Variable vo1 = smapper.pushT(vi1.getType());

  1181                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1182                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1183                             emit(out, " @1 = @2, @3 = @4;",

  1184                                  vo5, vo1, vo6, vo2);

  1185                         }

  1186                     }

  1187                     break;

  1188                 }

  1189                 case opc_swap: {

  1190                     final Variable vi1 = smapper.get(0);

  1191                     final Variable vi2 = smapper.get(1);

  1193                     if (vi1.getType() == vi2.getType()) {

  1194                         final Variable tmp = smapper.pushT(vi1.getType());

  1196                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1197                              tmp, vi1, vi2);

  1198                         smapper.pop(1);

  1199                     } else {

  1200                         smapper.pop(2);

  1201                         smapper.pushT(vi1.getType());

  1202                         smapper.pushT(vi2.getType());

  1203                     }

  1204                     break;

  1205                 }

  1206                 case opc_bipush:

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

  1208                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1209                     break;

  1210                 case opc_sipush:

  1211                     emit(out, "var @1 = @2;",

  1212                          smapper.pushI(),

  1213                          Integer.toString(readIntArg(byteCodes, i)));

  1214                     i += 2;

  1215                     break;

  1216                 case opc_getfield: {

  1217                     int indx = readIntArg(byteCodes, i);

  1218                     String[] fi = jc.getFieldInfoName(indx);

  1219                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1220                     final String mangleClass = mangleSig(fi[0]);

  1221                     final String mangleClassAccess = accessClass(mangleClass);

  1222                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1223                          smapper.popA(),

  1224                          smapper.pushT(type), fi[1], mangleClassAccess

  1225                     );

  1226                     i += 2;

  1227                     break;

  1228                 }

  1229                 case opc_putfield: {

  1230                     int indx = readIntArg(byteCodes, i);

  1231                     String[] fi = jc.getFieldInfoName(indx);

  1232                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1233                     final String mangleClass = mangleSig(fi[0]);

  1234                     final String mangleClassAccess = accessClass(mangleClass);

  1235                     emit(out, "@4(false)._@3.call(@2, @1);",

  1236                          smapper.popT(type),

  1237                          smapper.popA(), fi[1],

  1238                          mangleClassAccess

  1239                     );

  1240                     i += 2;

  1241                     break;

  1242                 }

  1243                 case opc_getstatic: {

  1244                     int indx = readIntArg(byteCodes, i);

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

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

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

  1248                          smapper.pushT(type),

  1249                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1250                     i += 2;

  1251                     addReference(fi[0]);

  1252                     break;

  1253                 }

  1254                 case opc_putstatic: {

  1255                     int indx = readIntArg(byteCodes, i);

  1256                     String[] fi = jc.getFieldInfoName(indx);

  1257                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1258                     emit(out, "@1(false).constructor.@2 = @3;",

  1259                          accessClass(fi[0].replace('/', '_')), fi[1],

  1260                          smapper.popT(type));

  1261                     i += 2;

  1262                     addReference(fi[0]);

  1263                     break;

  1264                 }

  1265                 case opc_checkcast: {

  1266                     int indx = readIntArg(byteCodes, i);

  1267                     final String type = jc.getClassName(indx);

  1268                     if (!type.startsWith("[")) {

  1269                         emit(out,

  1270                              "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1271                              smapper.getA(0), type.replace('/', '_'));

  1272                     } else {

  1273                         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);",

  1274                              smapper.getA(0), type

  1275                         );

  1276                     }

  1277                     i += 2;

  1278                     break;

  1279                 }

  1280                 case opc_instanceof: {

  1281                     int indx = readIntArg(byteCodes, i);

  1282                     final String type = jc.getClassName(indx);

  1283                     if (!type.startsWith("[")) {

  1284                         emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

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

  1286                              type.replace('/', '_'));

  1287                     } else {

  1288                         emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1289                             smapper.popA(), smapper.pushI(),

  1290                             type

  1291                         );

  1292                     }

  1293                     i += 2;

  1294                     break;

  1295                 }

  1296                 case opc_athrow: {

  1297                     final Variable v = smapper.popA();

  1298                     smapper.clear();

  1300                     emit(out, "{ var @1 = @2; throw @2; }",

  1301                          smapper.pushA(), v);

  1302                     break;

  1303                 }

  1305                 case opc_monitorenter: {

  1306                     out.append("/* monitor enter */");

  1307                     smapper.popA();

  1308                     break;

  1309                 }

  1311                 case opc_monitorexit: {

  1312                     out.append("/* monitor exit */");

  1313                     smapper.popA();

  1314                     break;

  1315                 }

  1317                 case opc_wide:

  1318                     wide = true;

  1319                     break;

  1321                 default: {

  1322                     wide = false;

  1323                     emit(out, "throw 'unknown bytecode @1';",

  1324                          Integer.toString(c));

  1325                 }

  1326             }

  1327             if (debug(" //")) {

  1328                 for (int j = prev; j <= i; j++) {

  1329                     out.append(" ");

  1330                     final int cc = readUByte(byteCodes, j);

  1331                     out.append(Integer.toString(cc));

  1332                 }

  1333             }

  1334             out.append("\n");

  1335         }

  1336         if (previousTrap != null) {

  1337             generateCatch(previousTrap);

  1338         }

  1339         out.append("  }\n");

  1340         out.append("};");

  1341     }

  1343     private int generateIf(byte[] byteCodes, int i,

  1344                            final Variable v2, final Variable v1,

  1345                            final String test) throws IOException {

  1346         int indx = i + readIntArg(byteCodes, i);

  1347         out.append("if (").append(v1)

  1348            .append(' ').append(test).append(' ')

  1349            .append(v2).append(") { gt = " + indx)

  1350            .append("; continue; }");

  1351         return i + 2;

  1352     }

  1354     private int readIntArg(byte[] byteCodes, int offsetInstruction) {

  1355         final int indxHi = byteCodes[offsetInstruction + 1] << 8;

  1356         final int indxLo = byteCodes[offsetInstruction + 2];

  1357         return (indxHi & 0xffffff00) | (indxLo & 0xff);

  1358     }

  1359     private int readInt4(byte[] byteCodes, int offset) {

  1360         final int d = byteCodes[offset + 0] << 24;

  1361         final int c = byteCodes[offset + 1] << 16;

  1362         final int b = byteCodes[offset + 2] << 8;

  1363         final int a = byteCodes[offset + 3];

  1364         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1365     }

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

  1367         return byteCodes[offset] & 0xff;

  1368     }

  1370     private int readUShort(byte[] byteCodes, int offset) {

  1371         return ((byteCodes[offset] & 0xff) << 8)

  1372                     | (byteCodes[offset + 1] & 0xff);

  1373     }

  1375     private int readShort(byte[] byteCodes, int offset) {

  1376         return (byteCodes[offset] << 8)

  1377                     | (byteCodes[offset + 1] & 0xff);

  1378     }

  1380     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1381         int i = 0;

  1382         Boolean count = null;

  1383         boolean array = false;

  1384         sig.append("__");

  1385         int firstPos = sig.length();

  1386         while (i < descriptor.length()) {

  1387             char ch = descriptor.charAt(i++);

  1388             switch (ch) {

  1389                 case '(':

  1390                     count = true;

  1391                     continue;

  1392                 case ')':

  1393                     count = false;

  1394                     continue;

  1395                 case 'B':

  1396                 case 'C':

  1397                 case 'D':

  1398                 case 'F':

  1399                 case 'I':

  1400                 case 'J':

  1401                 case 'S':

  1402                 case 'Z':

  1403                     if (count) {

  1404                         if (array) {

  1405                             sig.append("_3");

  1406                         }

  1407                         sig.append(ch);

  1408                         if (ch == 'J' || ch == 'D') {

  1409                             cnt.append('1');

  1410                         } else {

  1411                             cnt.append('0');

  1412                         }

  1413                     } else {

  1414                         sig.insert(firstPos, ch);

  1415                         if (array) {

  1416                             returnType[0] = '[';

  1417                             sig.insert(firstPos, "_3");

  1418                         } else {

  1419                             returnType[0] = ch;

  1420                         }

  1421                     }

  1422                     array = false;

  1423                     continue;

  1424                 case 'V':

  1425                     assert !count;

  1426                     returnType[0] = 'V';

  1427                     sig.insert(firstPos, 'V');

  1428                     continue;

  1429                 case 'L':

  1430                     int next = descriptor.indexOf(';', i);

  1431                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1432                     if (count) {

  1433                         if (array) {

  1434                             sig.append("_3");

  1435                         }

  1436                         sig.append(realSig);

  1437                         cnt.append('0');

  1438                     } else {

  1439                         sig.insert(firstPos, realSig);

  1440                         if (array) {

  1441                             sig.insert(firstPos, "_3");

  1442                         }

  1443                         returnType[0] = 'L';

  1444                     }

  1445                     i = next + 1;

  1446                     array = false;

  1447                     continue;

  1448                 case '[':

  1449                     array = true;

  1450                     continue;

  1451                 default:

  1452                     throw new IllegalStateException("Invalid char: " + ch);

  1453             }

  1454         }

  1455     }

  1457     static String mangleSig(String sig) {

  1458         return mangleSig(sig, 0, sig.length());

  1459     }

  1461     private static String mangleSig(String txt, int first, int last) {

  1462         StringBuilder sb = new StringBuilder();

  1463         for (int i = first; i < last; i++) {

  1464             final char ch = txt.charAt(i);

  1465             switch (ch) {

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

  1467                 case '_': sb.append("_1"); break;

  1468                 case ';': sb.append("_2"); break;

  1469                 case '[': sb.append("_3"); break;

  1470                 default: sb.append(ch); break;

  1471             }

  1472         }

  1473         return sb.toString();

  1474     }

  1476     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1477         StringBuilder name = new StringBuilder();

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

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

  1480         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1481             name.append("class"); // NOI18N

  1482         } else {

  1483             name.append(m.getName());

  1484         }

  1486         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1487         return name.toString();

  1488     }

  1490     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1491         StringBuilder name = new StringBuilder();

  1492         String descr = mi[2];//mi.getDescriptor();

  1493         String nm= mi[1];

  1494         if ("<init>".equals(nm)) { // NOI18N

  1495             name.append("cons"); // NOI18N

  1496         } else {

  1497             name.append(nm);

  1498         }

  1499         countArgs(descr, returnType, name, cnt);

  1500         return name.toString();

  1501     }

  1503     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1504     throws IOException {

  1505         int methodIndex = readIntArg(byteCodes, i);

  1506         String[] mi = jc.getFieldInfoName(methodIndex);

  1507         char[] returnType = { 'V' };

  1508         StringBuilder cnt = new StringBuilder();

  1509         String mn = findMethodName(mi, cnt, returnType);

  1511         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1512         final Variable[] vars = new Variable[numArguments];

  1514         for (int j = numArguments - 1; j >= 0; --j) {

  1515             vars[j] = mapper.pop();

  1516         }

  1518         if (returnType[0] != 'V') {

  1519             out.append("var ")

  1520                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1521                .append(" = ");

  1522         }

  1524         final String in = mi[0];

  1525         out.append(accessClass(in.replace('/', '_')));

  1526         out.append("(false).");

  1527         if (mn.startsWith("cons_")) {

  1528             out.append("constructor.");

  1529         }

  1530         out.append(mn);

  1531         if (isStatic) {

  1532             out.append('(');

  1533         } else {

  1534             out.append(".call(");

  1535         }

  1536         if (numArguments > 0) {

  1537             out.append(vars[0]);

  1538             for (int j = 1; j < numArguments; ++j) {

  1539                 out.append(", ");

  1540                 out.append(vars[j]);

  1541             }

  1542         }

  1543         out.append(");");

  1544         i += 2;

  1545         addReference(in);

  1546         return i;

  1547     }

  1548     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1549     throws IOException {

  1550         int methodIndex = readIntArg(byteCodes, i);

  1551         String[] mi = jc.getFieldInfoName(methodIndex);

  1552         char[] returnType = { 'V' };

  1553         StringBuilder cnt = new StringBuilder();

  1554         String mn = findMethodName(mi, cnt, returnType);

  1556         final int numArguments = cnt.length() + 1;

  1557         final Variable[] vars = new Variable[numArguments];

  1559         for (int j = numArguments - 1; j >= 0; --j) {

  1560             vars[j] = mapper.pop();

  1561         }

  1563         if (returnType[0] != 'V') {

  1564             out.append("var ")

  1565                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1566                .append(" = ");

  1567         }

  1569         out.append(vars[0]).append('.');

  1570         out.append(mn);

  1571         out.append('(');

  1572         String sep = "";

  1573         for (int j = 1; j < numArguments; ++j) {

  1574             out.append(sep);

  1575             out.append(vars[j]);

  1576             sep = ", ";

  1577         }

  1578         out.append(");");

  1579         i += 2;

  1580         return i;

  1581     }

  1583     private void addReference(String cn) throws IOException {

  1584         if (requireReference(cn)) {

  1585             debug(" /* needs " + cn + " */");

  1586         }

  1587     }

  1589     private void outType(String d, StringBuilder out) {

  1590         int arr = 0;

  1591         while (d.charAt(0) == '[') {

  1592             out.append('A');

  1593             d = d.substring(1);

  1594         }

  1595         if (d.charAt(0) == 'L') {

  1596             assert d.charAt(d.length() - 1) == ';';

  1597             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1598         } else {

  1599             out.append(d);

  1600         }

  1601     }

  1603     private String encodeConstant(int entryIndex) throws IOException {

  1604         String[] classRef = { null };

  1605         String s = jc.stringValue(entryIndex, classRef);

  1606         if (classRef[0] != null) {

  1607             if (classRef[0].startsWith("[")) {

  1608                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1609             } else {

  1610                 addReference(classRef[0]);

  1611                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1612             }

  1613         }

  1614         return s;

  1615     }

  1617     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1618         byte[] arr = m.findAnnotationData(true);

  1619         if (arr == null) {

  1620             return null;

  1621         }

  1622         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1623         class P extends AnnotationParser {

  1624             public P() {

  1625                 super(false, true);

  1626             }

  1628             int cnt;

  1629             String[] args = new String[30];

  1630             String body;

  1632             @Override

  1633             protected void visitAttr(String type, String attr, String at, String value) {

  1634                 if (type.equals(jvmType)) {

  1635                     if ("body".equals(attr)) {

  1636                         body = value;

  1637                     } else if ("args".equals(attr)) {

  1638                         args[cnt++] = value;

  1639                     } else {

  1640                         throw new IllegalArgumentException(attr);

  1641                     }

  1642                 }

  1643             }

  1644         }

  1645         P p = new P();

  1646         p.parse(arr, jc);

  1647         if (p.body == null) {

  1648             return null;

  1649         }

  1650         StringBuilder cnt = new StringBuilder();

  1651         final String mn = findMethodName(m, cnt);

  1652         out.append(prefix).append(mn);

  1653         out.append(" = function(");

  1654         String space = "";

  1655         int index = 0;

  1656         for (int i = 0; i < cnt.length(); i++) {

  1657             out.append(space);

  1658             space = outputArg(out, p.args, index);

  1659             index++;

  1660         }

  1661         out.append(") {").append("\n");

  1662         out.append(p.body);

  1663         out.append("\n}\n");

  1664         return mn;

  1665     }

  1666     private static String className(ClassData jc) {

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

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

  1669     }

  1671     private static String[] findAnnotation(

  1672         byte[] arr, ClassData cd, final String className,

  1673         final String... attrNames

  1674     ) throws IOException {

  1675         if (arr == null) {

  1676             return null;

  1677         }

  1678         final String[] values = new String[attrNames.length];

  1679         final boolean[] found = { false };

  1680         final String jvmType = "L" + className.replace('.', '/') + ";";

  1681         AnnotationParser ap = new AnnotationParser(false, true) {

  1682             @Override

  1683             protected void visitAttr(String type, String attr, String at, String value) {

  1684                 if (type.equals(jvmType)) {

  1685                     found[0] = true;

  1686                     for (int i = 0; i < attrNames.length; i++) {

  1687                         if (attrNames[i].equals(attr)) {

  1688                             values[i] = value;

  1689                         }

  1690                     }

  1691                 }

  1692             }

  1694         };

  1695         ap.parse(arr, cd);

  1696         return found[0] ? values : null;

  1697     }

  1699     private CharSequence initField(FieldData v) {

  1700         final String is = v.getInternalSig();

  1701         if (is.length() == 1) {

  1702             switch (is.charAt(0)) {

  1703                 case 'S':

  1704                 case 'J':

  1705                 case 'B':

  1706                 case 'Z':

  1707                 case 'C':

  1708                 case 'I': return " = 0;";

  1709                 case 'F':

  1710                 case 'D': return " = 0.0;";

  1711                 default:

  1712                     throw new IllegalStateException(is);

  1713             }

  1714         }

  1715         return " = null;";

  1716     }

  1718     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1719         AnnotationParser ap = new AnnotationParser(true, false) {

  1720             int[] cnt = new int[32];

  1721             int depth;

  1723             @Override

  1724             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1725                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1726                 requireReference(slashType);

  1728                 if (cnt[depth]++ > 0) {

  1729                     out.append(",");

  1730                 }

  1731                 if (top) {

  1732                     out.append('"').append(attrType).append("\" : ");

  1733                 }

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

  1735                 cnt[++depth] = 0;

  1736             }

  1738             @Override

  1739             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1740                 out.append("\n}\n");

  1741                 depth--;

  1742             }

  1744             @Override

  1745             protected void visitValueStart(String attrName, char type) throws IOException {

  1746                 if (cnt[depth]++ > 0) {

  1747                     out.append(",\n");

  1748                 }

  1749                 cnt[++depth] = 0;

  1750                 if (attrName != null) {

  1751                     out.append(attrName).append(" : ");

  1752                 }

  1753                 if (type == '[') {

  1754                     out.append("[");

  1755                 }

  1756             }

  1758             @Override

  1759             protected void visitValueEnd(String attrName, char type) throws IOException {

  1760                 if (type == '[') {

  1761                     out.append("]");

  1762                 }

  1763                 depth--;

  1764             }

  1766             @Override

  1767             protected void visitAttr(String type, String attr, String attrType, String value)

  1768             throws IOException {

  1769                 if (attr == null && value == null) {

  1770                     return;

  1771                 }

  1772                 out.append(value);

  1773             }

  1775             @Override

  1776             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1777             throws IOException {

  1778                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1779                 requireReference(slashType);

  1781                 out.append(accessClass(slashType.replace('/', '_')))

  1782                    .append("(false).constructor.").append(value);

  1783             }

  1784         };

  1785         ap.parse(data, cd);

  1786     }

  1788     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1789         final String name = args[indx];

  1790         if (name == null) {

  1791             return "";

  1792         }

  1793         if (name.contains(",")) {

  1794             throw new IOException("Wrong parameter with ',': " + name);

  1795         }

  1796         out.append(name);

  1797         return ",";

  1798     }

  1800     private static void emit(final Appendable out,

  1801                              final String format,

  1802                              final CharSequence... params) throws IOException {

  1803         final int length = format.length();

  1805         int processed = 0;

  1806         int paramOffset = format.indexOf('@');

  1807         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1808             final char paramChar = format.charAt(paramOffset + 1);

  1809             if ((paramChar >= '1') && (paramChar <= '9')) {

  1810                 final int paramIndex = paramChar - '0' - 1;

  1812                 out.append(format, processed, paramOffset);

  1813                 out.append(params[paramIndex]);

  1815                 ++paramOffset;

  1816                 processed = paramOffset + 1;

  1817             }

  1819             paramOffset = format.indexOf('@', paramOffset + 1);

  1820         }

  1822         out.append(format, processed, length);

  1823     }

  1825     private void generateCatch(TrapData[] traps) throws IOException {

  1826         out.append("} catch (e) {\n");

  1827         int finallyPC = -1;

  1828         for (TrapData e : traps) {

  1829             if (e == null) {

  1830                 break;

  1831             }

  1832             if (e.catch_cpx != 0) { //not finally

  1833                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1834                 addReference(classInternalName);

  1835                 if ("java/lang/Throwable".equals(classInternalName)) {

  1836                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1837                     out.append("  var stA0 = e;");

  1838                     out.append("} else {");

  1839                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1840                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1841                     out.append("}");

  1842                     out.append("gt=" + e.handler_pc + "; continue;");

  1843                 } else {

  1844                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1845                     out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");

  1846                     out.append("}\n");

  1847                 }

  1848             } else {

  1849                 finallyPC = e.handler_pc;

  1850             }

  1851         }

  1852         if (finallyPC == -1) {

  1853             out.append("throw e;");

  1854         } else {

  1855             out.append("gt=" + finallyPC + "; var stA0 = e; continue;");

  1856         }

  1857         out.append("\n}");

  1858     }

  1859 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Tue, 26 Feb 2013 16:54:16 +0100
changeset 772	d382dacfd73f
parent 771	vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@4252bfc396fc
child 775	a13e33fd5c2e
child 778	6f8683517f1f
permissions	-rw-r--r--