hg/bck2brwsr: vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@dbcd1a21f3f8

     1 /**

     2  * Back 2 Browser Bytecode Translator

     3  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

     4  *

     5  * This program is free software: you can redistribute it and/or modify

     6  * it under the terms of the GNU General Public License as published by

     7  * the Free Software Foundation, version 2 of the License.

     8  *

     9  * This program is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12  * GNU General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU General Public License

    15  * along with this program. Look for COPYING file in the top folder.

    16  * If not, see http://opensource.org/licenses/GPL-2.0.

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

    22 import org.apidesign.bck2brwsr.core.JavaScriptBody;

    23 import org.apidesign.javap.AnnotationParser;

    24 import org.apidesign.javap.ClassData;

    25 import org.apidesign.javap.FieldData;

    26 import org.apidesign.javap.MethodData;

    27 import org.apidesign.javap.StackMapIterator;

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

    29 import org.apidesign.javap.TrapData;

    30 import org.apidesign.javap.TrapDataIterator;

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

    33  *

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

    35  */

    36 abstract class ByteCodeToJavaScript {

    37     private ClassData jc;

    38     final Appendable out;

    40     protected ByteCodeToJavaScript(Appendable out) {

    41         this.out = out;

    42     }

    44     /* Collects additional required resources.

    45      *

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

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

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

    49      */

    50     protected abstract boolean requireReference(String internalClassName);

    52     /*

    53      * @param resourcePath name of resources to read

    54      */

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

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

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

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

    60      *

    61      * @param className suggested name of the class

    62      */

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

    64         return className + " = ";

    65     }

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

    67         return classOperation;

    68     }

    70     /** Prints out a debug message.

    71      *

    72      * @param msg the message

    73      * @return true if the message has been printed

    74      * @throws IOException

    75      */

    76     boolean debug(String msg) throws IOException {

    77         out.append(msg);

    78         return true;

    79     }

    81     /**

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

    83      *

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

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

    86      *

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

    88      */

    90     public String compile(InputStream classFile) throws IOException {

    91         this.jc = new ClassData(classFile);

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

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

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

    95             );

    96         }

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

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

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

   100             "resource", "processByteCode"

   101         );

   102         if (arr != null) {

   103             requireScript(arr[0]);

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

   105                 return null;

   106             }

   107         }

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

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

   110             "container", "prototype"

   111         );

   112         StringArray toInitilize = new StringArray();

   113         final String className = className(jc);

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

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

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

   117         if (proto == null) {

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

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

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

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

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

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

   124         } else {

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

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

   127                 proto[0] = "p";

   128             }

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

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

   131         }

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

   133             if (v.isStatic()) {

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

   135             } else {

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

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

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

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

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

   141                    .append("; };");

   142             }

   143         }

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

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

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

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

   148                 "name", "value"

   149             );

   150             if (only != null) {

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

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

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

   154                 }

   155                 continue;

   156             }

   157             String prefix;

   158             String mn;

   159             if (m.isStatic()) {

   160                 prefix = "\n    c.";

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

   162             } else {

   163                 if (m.isConstructor()) {

   164                     prefix = "\n    CLS.";

   165                     mn = generateInstanceMethod(prefix, m);

   166                 } else {

   167                     prefix = "\n    c.";

   168                     mn = generateInstanceMethod(prefix, m);

   169                 }

   170             }

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

   172             if (runAnno != null) {

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

   174                 generateAnno(jc, out, runAnno);

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

   176             }

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

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

   179         }

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

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

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

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

   184         }

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

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

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

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

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

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

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

   192         if (classAnno != null) {

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

   194             generateAnno(jc, out, classAnno);

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

   196         }

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

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

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

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

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

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

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

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

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

   206                 "name", "value"

   207             );

   208             if (only != null) {

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

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

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

   212                 }

   213                 continue;

   214             }

   215             if (!v.isStatic()) {

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

   217                     append(className).append('_').

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

   219             }

   220         }

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

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

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

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

   225         StringBuilder sb = new StringBuilder();

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

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

   228         }

   229         return sb.toString();

   230     }

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

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

   233         if (jsb != null) {

   234             return jsb;

   235         }

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

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

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

   239         }

   240         generateMethod(prefix, mn, m);

   241         return mn;

   242     }

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

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

   246         if (jsb != null) {

   247             return jsb;

   248         }

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

   250         generateMethod(prefix, mn, m);

   251         return mn;

   252     }

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

   255             throws IOException {

   256         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   257         TrapDataIterator trap = m.getTrapDataIterator();

   258         final LocalsMapper lmapper =

   259                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   266         if (byteCodes == null) {

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

   268                .append(jc.getClassName()).append('.')

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

   270             out.append("};");

   271             return;

   272         }

   274         final StackMapper smapper = new StackMapper();

   276         if (!m.isStatic()) {

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

   278         }

   280         int lastStackFrame = -1;

   281         TrapData[] previousTrap = null;

   282         boolean wide = false;

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

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

   286             int prev = i;

   287             stackMapIterator.advanceTo(i);

   288             boolean changeInCatch = trap.advanceTo(i);

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

   290                 if (previousTrap != null) {

   291                     generateCatch(previousTrap);

   292                     previousTrap = null;

   293                 }

   294             }

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

   296                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   300                 changeInCatch = true;

   301             } else {

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

   303             }

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

   305                 out.append("try {");

   306                 previousTrap = trap.current();

   307             }

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

   309             switch (c) {

   310                 case opc_aload_0:

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

   312                     break;

   313                 case opc_iload_0:

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

   315                     break;

   316                 case opc_lload_0:

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

   318                     break;

   319                 case opc_fload_0:

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

   321                     break;

   322                 case opc_dload_0:

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

   324                     break;

   325                 case opc_aload_1:

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

   327                     break;

   328                 case opc_iload_1:

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

   330                     break;

   331                 case opc_lload_1:

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

   333                     break;

   334                 case opc_fload_1:

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

   336                     break;

   337                 case opc_dload_1:

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

   339                     break;

   340                 case opc_aload_2:

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

   342                     break;

   343                 case opc_iload_2:

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

   345                     break;

   346                 case opc_lload_2:

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

   348                     break;

   349                 case opc_fload_2:

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

   351                     break;

   352                 case opc_dload_2:

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

   354                     break;

   355                 case opc_aload_3:

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

   357                     break;

   358                 case opc_iload_3:

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

   360                     break;

   361                 case opc_lload_3:

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

   363                     break;

   364                 case opc_fload_3:

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

   366                     break;

   367                 case opc_dload_3:

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

   369                     break;

   370                 case opc_iload: {

   371                     ++i;

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

   373                                           : readUByte(byteCodes, i);

   374                     wide = false;

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

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

   377                     break;

   378                 }

   379                 case opc_lload: {

   380                     ++i;

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

   382                                           : readUByte(byteCodes, i);

   383                     wide = false;

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

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

   386                     break;

   387                 }

   388                 case opc_fload: {

   389                     ++i;

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

   391                                           : readUByte(byteCodes, i);

   392                     wide = false;

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

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

   395                     break;

   396                 }

   397                 case opc_dload: {

   398                     ++i;

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

   400                                           : readUByte(byteCodes, i);

   401                     wide = false;

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

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

   404                     break;

   405                 }

   406                 case opc_aload: {

   407                     ++i;

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

   409                                           : readUByte(byteCodes, i);

   410                     wide = false;

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

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

   413                     break;

   414                 }

   415                 case opc_istore: {

   416                     ++i;

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

   418                                           : readUByte(byteCodes, i);

   419                     wide = false;

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

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

   422                     break;

   423                 }

   424                 case opc_lstore: {

   425                     ++i;

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

   427                                           : readUByte(byteCodes, i);

   428                     wide = false;

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

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

   431                     break;

   432                 }

   433                 case opc_fstore: {

   434                     ++i;

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

   436                                           : readUByte(byteCodes, i);

   437                     wide = false;

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

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

   440                     break;

   441                 }

   442                 case opc_dstore: {

   443                     ++i;

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

   445                                           : readUByte(byteCodes, i);

   446                     wide = false;

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

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

   449                     break;

   450                 }

   451                 case opc_astore: {

   452                     ++i;

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

   454                                           : readUByte(byteCodes, i);

   455                     wide = false;

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

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

   458                     break;

   459                 }

   460                 case opc_astore_0:

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

   462                     break;

   463                 case opc_istore_0:

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

   465                     break;

   466                 case opc_lstore_0:

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

   468                     break;

   469                 case opc_fstore_0:

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

   471                     break;

   472                 case opc_dstore_0:

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

   474                     break;

   475                 case opc_astore_1:

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

   477                     break;

   478                 case opc_istore_1:

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

   480                     break;

   481                 case opc_lstore_1:

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

   483                     break;

   484                 case opc_fstore_1:

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

   486                     break;

   487                 case opc_dstore_1:

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

   489                     break;

   490                 case opc_astore_2:

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

   492                     break;

   493                 case opc_istore_2:

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

   495                     break;

   496                 case opc_lstore_2:

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

   498                     break;

   499                 case opc_fstore_2:

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

   501                     break;

   502                 case opc_dstore_2:

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

   504                     break;

   505                 case opc_astore_3:

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

   507                     break;

   508                 case opc_istore_3:

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

   510                     break;

   511                 case opc_lstore_3:

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

   513                     break;

   514                 case opc_fstore_3:

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

   516                     break;

   517                 case opc_dstore_3:

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

   519                     break;

   520                 case opc_iadd:

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

   522                     break;

   523                 case opc_ladd:

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

   525                     break;

   526                 case opc_fadd:

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

   528                     break;

   529                 case opc_dadd:

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

   531                     break;

   532                 case opc_isub:

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

   534                     break;

   535                 case opc_lsub:

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

   537                     break;

   538                 case opc_fsub:

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

   540                     break;

   541                 case opc_dsub:

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

   543                     break;

   544                 case opc_imul:

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

   546                     break;

   547                 case opc_lmul:

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

   549                     break;

   550                 case opc_fmul:

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

   552                     break;

   553                 case opc_dmul:

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

   555                     break;

   556                 case opc_idiv:

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

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

   559                     break;

   560                 case opc_ldiv:

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

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

   563                     break;

   564                 case opc_fdiv:

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

   566                     break;

   567                 case opc_ddiv:

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

   569                     break;

   570                 case opc_irem:

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

   572                     break;

   573                 case opc_lrem:

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

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

   576                     break;

   577                 case opc_frem:

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

   579                     break;

   580                 case opc_drem:

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

   582                     break;

   583                 case opc_iand:

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

   585                     break;

   586                 case opc_land:

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

   588                     break;

   589                 case opc_ior:

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

   591                     break;

   592                 case opc_lor:

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

   594                     break;

   595                 case opc_ixor:

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

   597                     break;

   598                 case opc_lxor:

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

   600                     break;

   601                 case opc_ineg:

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

   603                     break;

   604                 case opc_lneg:

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

   606                     break;

   607                 case opc_fneg:

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

   609                     break;

   610                 case opc_dneg:

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

   612                     break;

   613                 case opc_ishl:

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

   615                     break;

   616                 case opc_lshl:

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

   618                     break;

   619                 case opc_ishr:

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

   621                     break;

   622                 case opc_lshr:

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

   624                     break;

   625                 case opc_iushr:

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

   627                     break;

   628                 case opc_lushr:

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

   630                     break;

   631                 case opc_iinc: {

   632                     ++i;

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

   634                                              : readUByte(byteCodes, i);

   635                     ++i;

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

   637                                             : byteCodes[i];

   638                     wide = false;

   639                     if (incrBy == 1) {

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

   641                     } else {

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

   643                              lmapper.getI(varIndx),

   644                              Integer.toString(incrBy));

   645                     }

   646                     break;

   647                 }

   648                 case opc_return:

   649                     emit(out, "return;");

   650                     break;

   651                 case opc_ireturn:

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

   653                     break;

   654                 case opc_lreturn:

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

   656                     break;

   657                 case opc_freturn:

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

   659                     break;

   660                 case opc_dreturn:

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

   662                     break;

   663                 case opc_areturn:

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

   665                     break;

   666                 case opc_i2l:

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

   668                     break;

   669                 case opc_i2f:

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

   671                     break;

   672                 case opc_i2d:

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

   674                     break;

   675                 case opc_l2i:

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

   677                     break;

   678                     // max int check?

   679                 case opc_l2f:

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

   681                     break;

   682                 case opc_l2d:

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

   684                     break;

   685                 case opc_f2d:

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

   687                     break;

   688                 case opc_d2f:

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

   690                     break;

   691                 case opc_f2i:

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

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

   694                     break;

   695                 case opc_f2l:

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

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

   698                     break;

   699                 case opc_d2i:

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

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

   702                     break;

   703                 case opc_d2l:

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

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

   706                     break;

   707                 case opc_i2b:

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

   709                     break;

   710                 case opc_i2c:

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

   712                     break;

   713                 case opc_i2s:

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

   715                     break;

   716                 case opc_aconst_null:

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

   718                     break;

   719                 case opc_iconst_m1:

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

   721                     break;

   722                 case opc_iconst_0:

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

   724                     break;

   725                 case opc_dconst_0:

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

   727                     break;

   728                 case opc_lconst_0:

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

   730                     break;

   731                 case opc_fconst_0:

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

   733                     break;

   734                 case opc_iconst_1:

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

   736                     break;

   737                 case opc_lconst_1:

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

   739                     break;

   740                 case opc_fconst_1:

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

   742                     break;

   743                 case opc_dconst_1:

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

   745                     break;

   746                 case opc_iconst_2:

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

   748                     break;

   749                 case opc_fconst_2:

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

   751                     break;

   752                 case opc_iconst_3:

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

   754                     break;

   755                 case opc_iconst_4:

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

   757                     break;

   758                 case opc_iconst_5:

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

   760                     break;

   761                 case opc_ldc: {

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

   763                     String v = encodeConstant(indx);

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

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

   766                     break;

   767                 }

   768                 case opc_ldc_w:

   769                 case opc_ldc2_w: {

   770                     int indx = readIntArg(byteCodes, i);

   771                     i += 2;

   772                     String v = encodeConstant(indx);

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

   774                     if (type == VarType.LONG) {

   775                         final Long lv = new Long(v);

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

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

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

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

   780                     } else {

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

   782                     }

   783                     break;

   784                 }

   785                 case opc_lcmp:

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

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

   788                     break;

   789                 case opc_fcmpl:

   790                 case opc_fcmpg:

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

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

   793                     break;

   794                 case opc_dcmpl:

   795                 case opc_dcmpg:

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

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

   798                     break;

   799                 case opc_if_acmpeq:

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

   801                                    "===");

   802                     break;

   803                 case opc_if_acmpne:

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

   805                                    "!=");

   806                     break;

   807                 case opc_if_icmpeq:

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

   809                                    "==");

   810                     break;

   811                 case opc_ifeq: {

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

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

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

   815                     i += 2;

   816                     break;

   817                 }

   818                 case opc_ifne: {

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

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

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

   822                     i += 2;

   823                     break;

   824                 }

   825                 case opc_iflt: {

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

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

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

   829                     i += 2;

   830                     break;

   831                 }

   832                 case opc_ifle: {

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

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

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

   836                     i += 2;

   837                     break;

   838                 }

   839                 case opc_ifgt: {

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

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

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

   843                     i += 2;

   844                     break;

   845                 }

   846                 case opc_ifge: {

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

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

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

   850                     i += 2;

   851                     break;

   852                 }

   853                 case opc_ifnonnull: {

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

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

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

   857                     i += 2;

   858                     break;

   859                 }

   860                 case opc_ifnull: {

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

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

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

   864                     i += 2;

   865                     break;

   866                 }

   867                 case opc_if_icmpne:

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

   869                                    "!=");

   870                     break;

   871                 case opc_if_icmplt:

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

   873                                    "<");

   874                     break;

   875                 case opc_if_icmple:

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

   877                                    "<=");

   878                     break;

   879                 case opc_if_icmpgt:

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

   881                                    ">");

   882                     break;

   883                 case opc_if_icmpge:

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

   885                                    ">=");

   886                     break;

   887                 case opc_goto: {

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

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

   890                     i += 2;

   891                     break;

   892                 }

   893                 case opc_lookupswitch: {

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

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

   896                     table += 4;

   897                     int n = readInt4(byteCodes, table);

   898                     table += 4;

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

   900                     while (n-- > 0) {

   901                         int cnstnt = readInt4(byteCodes, table);

   902                         table += 4;

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

   904                         table += 4;

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

   906                     }

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

   908                     i = table - 1;

   909                     break;

   910                 }

   911                 case opc_tableswitch: {

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

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

   914                     table += 4;

   915                     int low = readInt4(byteCodes, table);

   916                     table += 4;

   917                     int high = readInt4(byteCodes, table);

   918                     table += 4;

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

   920                     while (low <= high) {

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

   922                         table += 4;

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

   924                         low++;

   925                     }

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

   927                     i = table - 1;

   928                     break;

   929                 }

   930                 case opc_invokeinterface: {

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

   932                     break;

   933                 }

   934                 case opc_invokevirtual:

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

   936                     break;

   937                 case opc_invokespecial:

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

   939                     break;

   940                 case opc_invokestatic:

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

   942                     break;

   943                 case opc_new: {

   944                     int indx = readIntArg(byteCodes, i);

   945                     String ci = jc.getClassName(indx);

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

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

   948                     addReference(ci);

   949                     i += 2;

   950                     break;

   951                 }

   952                 case opc_newarray:

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

   954                     String jvmType;

   955                     switch (atype) {

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

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

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

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

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

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

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

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

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

   965                     }

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

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

   968                     break;

   969                 case opc_anewarray: {

   970                     int type = readIntArg(byteCodes, i);

   971                     i += 2;

   972                     String typeName = jc.getClassName(type);

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

   974                         typeName = "[" + typeName;

   975                     } else {

   976                         typeName = "[L" + typeName + ";";

   977                     }

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

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

   980                     break;

   981                 }

   982                 case opc_multianewarray: {

   983                     int type = readIntArg(byteCodes, i);

   984                     i += 2;

   985                     String typeName = jc.getClassName(type);

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

   987                     StringBuilder dims = new StringBuilder();

   988                     dims.append('[');

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

   990                         if (d != 0) {

   991                             dims.append(",");

   992                         }

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

   994                     }

   995                     dims.append(']');

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

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

   998                     break;

   999                 }

  1000                 case opc_arraylength:

  1001                     emit(out, "var @2 = @1.length;",

  1002                          smapper.popA(), smapper.pushI());

  1003                     break;

  1004                 case opc_lastore:

  1005                     emit(out, "@3.at(@2, @1);",

  1006                          smapper.popL(), smapper.popI(), smapper.popA());

  1007                     break;

  1008                 case opc_fastore:

  1009                     emit(out, "@3.at(@2, @1);",

  1010                          smapper.popF(), smapper.popI(), smapper.popA());

  1011                     break;

  1012                 case opc_dastore:

  1013                     emit(out, "@3.at(@2, @1);",

  1014                          smapper.popD(), smapper.popI(), smapper.popA());

  1015                     break;

  1016                 case opc_aastore:

  1017                     emit(out, "@3.at(@2, @1);",

  1018                          smapper.popA(), smapper.popI(), smapper.popA());

  1019                     break;

  1020                 case opc_iastore:

  1021                 case opc_bastore:

  1022                 case opc_castore:

  1023                 case opc_sastore:

  1024                     emit(out, "@3.at(@2, @1);",

  1025                          smapper.popI(), smapper.popI(), smapper.popA());

  1026                     break;

  1027                 case opc_laload:

  1028                     emit(out, "var @3 = @2.at(@1);",

  1029                          smapper.popI(), smapper.popA(), smapper.pushL());

  1030                     break;

  1031                 case opc_faload:

  1032                     emit(out, "var @3 = @2.at(@1);",

  1033                          smapper.popI(), smapper.popA(), smapper.pushF());

  1034                     break;

  1035                 case opc_daload:

  1036                     emit(out, "var @3 = @2.at(@1);",

  1037                          smapper.popI(), smapper.popA(), smapper.pushD());

  1038                     break;

  1039                 case opc_aaload:

  1040                     emit(out, "var @3 = @2.at(@1);",

  1041                          smapper.popI(), smapper.popA(), smapper.pushA());

  1042                     break;

  1043                 case opc_iaload:

  1044                 case opc_baload:

  1045                 case opc_caload:

  1046                 case opc_saload:

  1047                     emit(out, "var @3 = @2.at(@1);",

  1048                          smapper.popI(), smapper.popA(), smapper.pushI());

  1049                     break;

  1050                 case opc_pop:

  1051                 case opc_pop2:

  1052                     smapper.pop(1);

  1053                     debug("/* pop */");

  1054                     break;

  1055                 case opc_dup: {

  1056                     final Variable v = smapper.get(0);

  1057                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1058                     break;

  1059                 }

  1060                 case opc_dup2: {

  1061                     final Variable vi1 = smapper.get(0);

  1063                     if (vi1.isCategory2()) {

  1064                         emit(out, "var @1 = @2;",

  1065                              smapper.pushT(vi1.getType()), vi1);

  1066                     } else {

  1067                         final Variable vi2 = smapper.get(1);

  1068                         emit(out, "var @1 = @2, @3 = @4;",

  1069                              smapper.pushT(vi2.getType()), vi2,

  1070                              smapper.pushT(vi1.getType()), vi1);

  1071                     }

  1072                     break;

  1073                 }

  1074                 case opc_dup_x1: {

  1075                     final Variable vi1 = smapper.pop();

  1076                     final Variable vi2 = smapper.pop();

  1077                     final Variable vo3 = smapper.pushT(vi1.getType());

  1078                     final Variable vo2 = smapper.pushT(vi2.getType());

  1079                     final Variable vo1 = smapper.pushT(vi1.getType());

  1081                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1082                          vo1, vi1, vo2, vi2, vo3, vo1);

  1083                     break;

  1084                 }

  1085                 case opc_dup2_x1: {

  1086                     final Variable vi1 = smapper.pop();

  1087                     final Variable vi2 = smapper.pop();

  1089                     if (vi1.isCategory2()) {

  1090                         final Variable vo3 = smapper.pushT(vi1.getType());

  1091                         final Variable vo2 = smapper.pushT(vi2.getType());

  1092                         final Variable vo1 = smapper.pushT(vi1.getType());

  1094                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1095                              vo1, vi1, vo2, vi2, vo3, vo1);

  1096                     } else {

  1097                         final Variable vi3 = smapper.pop();

  1098                         final Variable vo5 = smapper.pushT(vi2.getType());

  1099                         final Variable vo4 = smapper.pushT(vi1.getType());

  1100                         final Variable vo3 = smapper.pushT(vi3.getType());

  1101                         final Variable vo2 = smapper.pushT(vi2.getType());

  1102                         final Variable vo1 = smapper.pushT(vi1.getType());

  1104                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1105                              vo1, vi1, vo2, vi2, vo3, vi3);

  1106                         emit(out, " @1 = @2, @3 = @4;",

  1107                              vo4, vo1, vo5, vo2);

  1108                     }

  1109                     break;

  1110                 }

  1111                 case opc_dup_x2: {

  1112                     final Variable vi1 = smapper.pop();

  1113                     final Variable vi2 = smapper.pop();

  1115                     if (vi2.isCategory2()) {

  1116                         final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1122                     } else {

  1123                         final Variable vi3 = smapper.pop();

  1124                         final Variable vo4 = smapper.pushT(vi1.getType());

  1125                         final Variable vo3 = smapper.pushT(vi3.getType());

  1126                         final Variable vo2 = smapper.pushT(vi2.getType());

  1127                         final Variable vo1 = smapper.pushT(vi1.getType());

  1129                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1130                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1131                     }

  1132                     break;

  1133                 }

  1134                 case opc_dup2_x2: {

  1135                     final Variable vi1 = smapper.pop();

  1136                     final Variable vi2 = smapper.pop();

  1138                     if (vi1.isCategory2()) {

  1139                         if (vi2.isCategory2()) {

  1140                             final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1146                         } else {

  1147                             final Variable vi3 = smapper.pop();

  1148                             final Variable vo4 = smapper.pushT(vi1.getType());

  1149                             final Variable vo3 = smapper.pushT(vi3.getType());

  1150                             final Variable vo2 = smapper.pushT(vi2.getType());

  1151                             final Variable vo1 = smapper.pushT(vi1.getType());

  1153                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1154                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1155                         }

  1156                     } else {

  1157                         final Variable vi3 = smapper.pop();

  1159                         if (vi3.isCategory2()) {

  1160                             final Variable vo5 = smapper.pushT(vi2.getType());

  1161                             final Variable vo4 = smapper.pushT(vi1.getType());

  1162                             final Variable vo3 = smapper.pushT(vi3.getType());

  1163                             final Variable vo2 = smapper.pushT(vi2.getType());

  1164                             final Variable vo1 = smapper.pushT(vi1.getType());

  1166                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1167                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1168                             emit(out, " @1 = @2, @3 = @4;",

  1169                                  vo4, vo1, vo5, vo2);

  1170                         } else {

  1171                             final Variable vi4 = smapper.pop();

  1172                             final Variable vo6 = smapper.pushT(vi2.getType());

  1173                             final Variable vo5 = smapper.pushT(vi1.getType());

  1174                             final Variable vo4 = smapper.pushT(vi4.getType());

  1175                             final Variable vo3 = smapper.pushT(vi3.getType());

  1176                             final Variable vo2 = smapper.pushT(vi2.getType());

  1177                             final Variable vo1 = smapper.pushT(vi1.getType());

  1179                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1180                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1181                             emit(out, " @1 = @2, @3 = @4;",

  1182                                  vo5, vo1, vo6, vo2);

  1183                         }

  1184                     }

  1185                     break;

  1186                 }

  1187                 case opc_swap: {

  1188                     final Variable vi1 = smapper.get(0);

  1189                     final Variable vi2 = smapper.get(1);

  1191                     if (vi1.getType() == vi2.getType()) {

  1192                         final Variable tmp = smapper.pushT(vi1.getType());

  1194                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1195                              tmp, vi1, vi2);

  1196                         smapper.pop(1);

  1197                     } else {

  1198                         smapper.pop(2);

  1199                         smapper.pushT(vi1.getType());

  1200                         smapper.pushT(vi2.getType());

  1201                     }

  1202                     break;

  1203                 }

  1204                 case opc_bipush:

  1205                     emit(out, "var @1 = @2;",

  1206                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1207                     break;

  1208                 case opc_sipush:

  1209                     emit(out, "var @1 = @2;",

  1210                          smapper.pushI(),

  1211                          Integer.toString(readIntArg(byteCodes, i)));

  1212                     i += 2;

  1213                     break;

  1214                 case opc_getfield: {

  1215                     int indx = readIntArg(byteCodes, i);

  1216                     String[] fi = jc.getFieldInfoName(indx);

  1217                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1218                     final String mangleClass = mangleSig(fi[0]);

  1219                     final String mangleClassAccess = accessClass(mangleClass);

  1220                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1221                          smapper.popA(),

  1222                          smapper.pushT(type), fi[1], mangleClassAccess

  1223                     );

  1224                     i += 2;

  1225                     break;

  1226                 }

  1227                 case opc_putfield: {

  1228                     int indx = readIntArg(byteCodes, i);

  1229                     String[] fi = jc.getFieldInfoName(indx);

  1230                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1231                     final String mangleClass = mangleSig(fi[0]);

  1232                     final String mangleClassAccess = accessClass(mangleClass);

  1233                     emit(out, "@4(false)._@3.call(@2, @1);",

  1234                          smapper.popT(type),

  1235                          smapper.popA(), fi[1],

  1236                          mangleClassAccess

  1237                     );

  1238                     i += 2;

  1239                     break;

  1240                 }

  1241                 case opc_getstatic: {

  1242                     int indx = readIntArg(byteCodes, i);

  1243                     String[] fi = jc.getFieldInfoName(indx);

  1244                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1245                     emit(out, "var @1 = @2(false).constructor.@3;",

  1246                          smapper.pushT(type),

  1247                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1248                     i += 2;

  1249                     addReference(fi[0]);

  1250                     break;

  1251                 }

  1252                 case opc_putstatic: {

  1253                     int indx = readIntArg(byteCodes, i);

  1254                     String[] fi = jc.getFieldInfoName(indx);

  1255                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1256                     emit(out, "@1(false).constructor.@2 = @3;",

  1257                          accessClass(fi[0].replace('/', '_')), fi[1],

  1258                          smapper.popT(type));

  1259                     i += 2;

  1260                     addReference(fi[0]);

  1261                     break;

  1262                 }

  1263                 case opc_checkcast: {

  1264                     int indx = readIntArg(byteCodes, i);

  1265                     final String type = jc.getClassName(indx);

  1266                     if (!type.startsWith("[")) {

  1267                         emit(out,

  1268                              "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1269                              smapper.getA(0), type.replace('/', '_'));

  1270                     } else {

  1271                         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);",

  1272                              smapper.getA(0), type

  1273                         );

  1274                     }

  1275                     i += 2;

  1276                     break;

  1277                 }

  1278                 case opc_instanceof: {

  1279                     int indx = readIntArg(byteCodes, i);

  1280                     final String type = jc.getClassName(indx);

  1281                     if (!type.startsWith("[")) {

  1282                         emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  1283                              smapper.popA(), smapper.pushI(),

  1284                              type.replace('/', '_'));

  1285                     } else {

  1286                         emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1287                             smapper.popA(), smapper.pushI(),

  1288                             type

  1289                         );

  1290                     }

  1291                     i += 2;

  1292                     break;

  1293                 }

  1294                 case opc_athrow: {

  1295                     final Variable v = smapper.popA();

  1296                     smapper.clear();

  1298                     emit(out, "{ var @1 = @2; throw @2; }",

  1299                          smapper.pushA(), v);

  1300                     break;

  1301                 }

  1303                 case opc_monitorenter: {

  1304                     out.append("/* monitor enter */");

  1305                     smapper.popA();

  1306                     break;

  1307                 }

  1309                 case opc_monitorexit: {

  1310                     out.append("/* monitor exit */");

  1311                     smapper.popA();

  1312                     break;

  1313                 }

  1315                 case opc_wide:

  1316                     wide = true;

  1317                     break;

  1319                 default: {

  1320                     wide = false;

  1321                     emit(out, "throw 'unknown bytecode @1';",

  1322                          Integer.toString(c));

  1323                 }

  1324             }

  1325             if (debug(" //")) {

  1326                 for (int j = prev; j <= i; j++) {

  1327                     out.append(" ");

  1328                     final int cc = readUByte(byteCodes, j);

  1329                     out.append(Integer.toString(cc));

  1330                 }

  1331             }

  1332             out.append("\n");

  1333         }

  1334         if (previousTrap != null) {

  1335             generateCatch(previousTrap);

  1336         }

  1337         out.append("  }\n");

  1338         out.append("};");

  1339     }

  1341     private int generateIf(byte[] byteCodes, int i,

  1342                            final Variable v2, final Variable v1,

  1343                            final String test) throws IOException {

  1344         int indx = i + readIntArg(byteCodes, i);

  1345         out.append("if (").append(v1)

  1346            .append(' ').append(test).append(' ')

  1347            .append(v2).append(") { gt = " + indx)

  1348            .append("; continue; }");

  1349         return i + 2;

  1350     }

  1352     private int readIntArg(byte[] byteCodes, int offsetInstruction) {

  1353         final int indxHi = byteCodes[offsetInstruction + 1] << 8;

  1354         final int indxLo = byteCodes[offsetInstruction + 2];

  1355         return (indxHi & 0xffffff00) | (indxLo & 0xff);

  1356     }

  1357     private int readInt4(byte[] byteCodes, int offsetInstruction) {

  1358         final int d = byteCodes[offsetInstruction + 0] << 24;

  1359         final int c = byteCodes[offsetInstruction + 1] << 16;

  1360         final int b = byteCodes[offsetInstruction + 2] << 8;

  1361         final int a = byteCodes[offsetInstruction + 3];

  1362         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1363     }

  1364     private int readUByte(byte[] byteCodes, int offsetInstruction) {

  1365         return byteCodes[offsetInstruction] & 0xff;

  1366     }

  1368     private int readUShort(byte[] byteCodes, int offsetInstruction) {

  1369         return ((byteCodes[offsetInstruction] & 0xff) << 8)

  1370                     | (byteCodes[offsetInstruction + 1] & 0xff);

  1371     }

  1373     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1374         int i = 0;

  1375         Boolean count = null;

  1376         boolean array = false;

  1377         sig.append("__");

  1378         int firstPos = sig.length();

  1379         while (i < descriptor.length()) {

  1380             char ch = descriptor.charAt(i++);

  1381             switch (ch) {

  1382                 case '(':

  1383                     count = true;

  1384                     continue;

  1385                 case ')':

  1386                     count = false;

  1387                     continue;

  1388                 case 'B':

  1389                 case 'C':

  1390                 case 'D':

  1391                 case 'F':

  1392                 case 'I':

  1393                 case 'J':

  1394                 case 'S':

  1395                 case 'Z':

  1396                     if (count) {

  1397                         if (array) {

  1398                             sig.append("_3");

  1399                         }

  1400                         sig.append(ch);

  1401                         if (ch == 'J' || ch == 'D') {

  1402                             cnt.append('1');

  1403                         } else {

  1404                             cnt.append('0');

  1405                         }

  1406                     } else {

  1407                         sig.insert(firstPos, ch);

  1408                         if (array) {

  1409                             returnType[0] = '[';

  1410                             sig.insert(firstPos, "_3");

  1411                         } else {

  1412                             returnType[0] = ch;

  1413                         }

  1414                     }

  1415                     array = false;

  1416                     continue;

  1417                 case 'V':

  1418                     assert !count;

  1419                     returnType[0] = 'V';

  1420                     sig.insert(firstPos, 'V');

  1421                     continue;

  1422                 case 'L':

  1423                     int next = descriptor.indexOf(';', i);

  1424                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1425                     if (count) {

  1426                         if (array) {

  1427                             sig.append("_3");

  1428                         }

  1429                         sig.append(realSig);

  1430                         cnt.append('0');

  1431                     } else {

  1432                         sig.insert(firstPos, realSig);

  1433                         if (array) {

  1434                             sig.insert(firstPos, "_3");

  1435                         }

  1436                         returnType[0] = 'L';

  1437                     }

  1438                     i = next + 1;

  1439                     array = false;

  1440                     continue;

  1441                 case '[':

  1442                     array = true;

  1443                     continue;

  1444                 default:

  1445                     throw new IllegalStateException("Invalid char: " + ch);

  1446             }

  1447         }

  1448     }

  1450     static String mangleSig(String sig) {

  1451         return mangleSig(sig, 0, sig.length());

  1452     }

  1454     private static String mangleSig(String txt, int first, int last) {

  1455         StringBuilder sb = new StringBuilder();

  1456         for (int i = first; i < last; i++) {

  1457             final char ch = txt.charAt(i);

  1458             switch (ch) {

  1459                 case '/': sb.append('_'); break;

  1460                 case '_': sb.append("_1"); break;

  1461                 case ';': sb.append("_2"); break;

  1462                 case '[': sb.append("_3"); break;

  1463                 default: sb.append(ch); break;

  1464             }

  1465         }

  1466         return sb.toString();

  1467     }

  1469     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1470         StringBuilder name = new StringBuilder();

  1471         if ("<init>".equals(m.getName())) { // NOI18N

  1472             name.append("cons"); // NOI18N

  1473         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1474             name.append("class"); // NOI18N

  1475         } else {

  1476             name.append(m.getName());

  1477         }

  1479         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1480         return name.toString();

  1481     }

  1483     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1484         StringBuilder name = new StringBuilder();

  1485         String descr = mi[2];//mi.getDescriptor();

  1486         String nm= mi[1];

  1487         if ("<init>".equals(nm)) { // NOI18N

  1488             name.append("cons"); // NOI18N

  1489         } else {

  1490             name.append(nm);

  1491         }

  1492         countArgs(descr, returnType, name, cnt);

  1493         return name.toString();

  1494     }

  1496     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1497     throws IOException {

  1498         int methodIndex = readIntArg(byteCodes, i);

  1499         String[] mi = jc.getFieldInfoName(methodIndex);

  1500         char[] returnType = { 'V' };

  1501         StringBuilder cnt = new StringBuilder();

  1502         String mn = findMethodName(mi, cnt, returnType);

  1504         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1505         final Variable[] vars = new Variable[numArguments];

  1507         for (int j = numArguments - 1; j >= 0; --j) {

  1508             vars[j] = mapper.pop();

  1509         }

  1511         if (returnType[0] != 'V') {

  1512             out.append("var ")

  1513                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1514                .append(" = ");

  1515         }

  1517         final String in = mi[0];

  1518         out.append(accessClass(in.replace('/', '_')));

  1519         out.append("(false).");

  1520         if (mn.startsWith("cons_")) {

  1521             out.append("constructor.");

  1522         }

  1523         out.append(mn);

  1524         if (isStatic) {

  1525             out.append('(');

  1526         } else {

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

  1528         }

  1529         if (numArguments > 0) {

  1530             out.append(vars[0]);

  1531             for (int j = 1; j < numArguments; ++j) {

  1532                 out.append(", ");

  1533                 out.append(vars[j]);

  1534             }

  1535         }

  1536         out.append(");");

  1537         i += 2;

  1538         addReference(in);

  1539         return i;

  1540     }

  1541     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1542     throws IOException {

  1543         int methodIndex = readIntArg(byteCodes, i);

  1544         String[] mi = jc.getFieldInfoName(methodIndex);

  1545         char[] returnType = { 'V' };

  1546         StringBuilder cnt = new StringBuilder();

  1547         String mn = findMethodName(mi, cnt, returnType);

  1549         final int numArguments = cnt.length() + 1;

  1550         final Variable[] vars = new Variable[numArguments];

  1552         for (int j = numArguments - 1; j >= 0; --j) {

  1553             vars[j] = mapper.pop();

  1554         }

  1556         if (returnType[0] != 'V') {

  1557             out.append("var ")

  1558                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1559                .append(" = ");

  1560         }

  1562         out.append(vars[0]).append('.');

  1563         out.append(mn);

  1564         out.append('(');

  1565         String sep = "";

  1566         for (int j = 1; j < numArguments; ++j) {

  1567             out.append(sep);

  1568             out.append(vars[j]);

  1569             sep = ", ";

  1570         }

  1571         out.append(");");

  1572         i += 2;

  1573         return i;

  1574     }

  1576     private void addReference(String cn) throws IOException {

  1577         if (requireReference(cn)) {

  1578             debug(" /* needs " + cn + " */");

  1579         }

  1580     }

  1582     private void outType(String d, StringBuilder out) {

  1583         int arr = 0;

  1584         while (d.charAt(0) == '[') {

  1585             out.append('A');

  1586             d = d.substring(1);

  1587         }

  1588         if (d.charAt(0) == 'L') {

  1589             assert d.charAt(d.length() - 1) == ';';

  1590             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1591         } else {

  1592             out.append(d);

  1593         }

  1594     }

  1596     private String encodeConstant(int entryIndex) throws IOException {

  1597         String[] classRef = { null };

  1598         String s = jc.stringValue(entryIndex, classRef);

  1599         if (classRef[0] != null) {

  1600             if (classRef[0].startsWith("[")) {

  1601                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1602             } else {

  1603                 addReference(classRef[0]);

  1604                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1605             }

  1606         }

  1607         return s;

  1608     }

  1610     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1611         byte[] arr = m.findAnnotationData(true);

  1612         if (arr == null) {

  1613             return null;

  1614         }

  1615         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1616         class P extends AnnotationParser {

  1617             public P() {

  1618                 super(false, true);

  1619             }

  1621             int cnt;

  1622             String[] args = new String[30];

  1623             String body;

  1625             @Override

  1626             protected void visitAttr(String type, String attr, String at, String value) {

  1627                 if (type.equals(jvmType)) {

  1628                     if ("body".equals(attr)) {

  1629                         body = value;

  1630                     } else if ("args".equals(attr)) {

  1631                         args[cnt++] = value;

  1632                     } else {

  1633                         throw new IllegalArgumentException(attr);

  1634                     }

  1635                 }

  1636             }

  1637         }

  1638         P p = new P();

  1639         p.parse(arr, jc);

  1640         if (p.body == null) {

  1641             return null;

  1642         }

  1643         StringBuilder cnt = new StringBuilder();

  1644         final String mn = findMethodName(m, cnt);

  1645         out.append(prefix).append(mn);

  1646         out.append(" = function(");

  1647         String space = "";

  1648         int index = 0;

  1649         for (int i = 0; i < cnt.length(); i++) {

  1650             out.append(space);

  1651             space = outputArg(out, p.args, index);

  1652             index++;

  1653         }

  1654         out.append(") {").append("\n");

  1655         out.append(p.body);

  1656         out.append("\n}\n");

  1657         return mn;

  1658     }

  1659     private static String className(ClassData jc) {

  1660         //return jc.getName().getInternalName().replace('/', '_');

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

  1662     }

  1664     private static String[] findAnnotation(

  1665         byte[] arr, ClassData cd, final String className,

  1666         final String... attrNames

  1667     ) throws IOException {

  1668         if (arr == null) {

  1669             return null;

  1670         }

  1671         final String[] values = new String[attrNames.length];

  1672         final boolean[] found = { false };

  1673         final String jvmType = "L" + className.replace('.', '/') + ";";

  1674         AnnotationParser ap = new AnnotationParser(false, true) {

  1675             @Override

  1676             protected void visitAttr(String type, String attr, String at, String value) {

  1677                 if (type.equals(jvmType)) {

  1678                     found[0] = true;

  1679                     for (int i = 0; i < attrNames.length; i++) {

  1680                         if (attrNames[i].equals(attr)) {

  1681                             values[i] = value;

  1682                         }

  1683                     }

  1684                 }

  1685             }

  1687         };

  1688         ap.parse(arr, cd);

  1689         return found[0] ? values : null;

  1690     }

  1692     private CharSequence initField(FieldData v) {

  1693         final String is = v.getInternalSig();

  1694         if (is.length() == 1) {

  1695             switch (is.charAt(0)) {

  1696                 case 'S':

  1697                 case 'J':

  1698                 case 'B':

  1699                 case 'Z':

  1700                 case 'C':

  1701                 case 'I': return " = 0;";

  1702                 case 'F':

  1703                 case 'D': return " = 0.0;";

  1704                 default:

  1705                     throw new IllegalStateException(is);

  1706             }

  1707         }

  1708         return " = null;";

  1709     }

  1711     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1712         AnnotationParser ap = new AnnotationParser(true, false) {

  1713             int[] cnt = new int[32];

  1714             int depth;

  1716             @Override

  1717             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1718                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1719                 requireReference(slashType);

  1721                 if (cnt[depth]++ > 0) {

  1722                     out.append(",");

  1723                 }

  1724                 if (top) {

  1725                     out.append('"').append(attrType).append("\" : ");

  1726                 }

  1727                 out.append("{\n");

  1728                 cnt[++depth] = 0;

  1729             }

  1731             @Override

  1732             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1733                 out.append("\n}\n");

  1734                 depth--;

  1735             }

  1737             @Override

  1738             protected void visitValueStart(String attrName, char type) throws IOException {

  1739                 if (cnt[depth]++ > 0) {

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

  1741                 }

  1742                 cnt[++depth] = 0;

  1743                 if (attrName != null) {

  1744                     out.append(attrName).append(" : ");

  1745                 }

  1746                 if (type == '[') {

  1747                     out.append("[");

  1748                 }

  1749             }

  1751             @Override

  1752             protected void visitValueEnd(String attrName, char type) throws IOException {

  1753                 if (type == '[') {

  1754                     out.append("]");

  1755                 }

  1756                 depth--;

  1757             }

  1759             @Override

  1760             protected void visitAttr(String type, String attr, String attrType, String value)

  1761             throws IOException {

  1762                 if (attr == null && value == null) {

  1763                     return;

  1764                 }

  1765                 out.append(value);

  1766             }

  1768             @Override

  1769             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1770             throws IOException {

  1771                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1772                 requireReference(slashType);

  1774                 out.append(accessClass(slashType.replace('/', '_')))

  1775                    .append("(false).constructor.").append(value);

  1776             }

  1777         };

  1778         ap.parse(data, cd);

  1779     }

  1781     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1782         final String name = args[indx];

  1783         if (name == null) {

  1784             return "";

  1785         }

  1786         if (name.contains(",")) {

  1787             throw new IOException("Wrong parameter with ',': " + name);

  1788         }

  1789         out.append(name);

  1790         return ",";

  1791     }

  1793     private static void emit(final Appendable out,

  1794                              final String format,

  1795                              final CharSequence... params) throws IOException {

  1796         final int length = format.length();

  1798         int processed = 0;

  1799         int paramOffset = format.indexOf('@');

  1800         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1801             final char paramChar = format.charAt(paramOffset + 1);

  1802             if ((paramChar >= '1') && (paramChar <= '9')) {

  1803                 final int paramIndex = paramChar - '0' - 1;

  1805                 out.append(format, processed, paramOffset);

  1806                 out.append(params[paramIndex]);

  1808                 ++paramOffset;

  1809                 processed = paramOffset + 1;

  1810             }

  1812             paramOffset = format.indexOf('@', paramOffset + 1);

  1813         }

  1815         out.append(format, processed, length);

  1816     }

  1818     private void generateCatch(TrapData[] traps) throws IOException {

  1819         out.append("} catch (e) {\n");

  1820         int finallyPC = -1;

  1821         for (TrapData e : traps) {

  1822             if (e == null) {

  1823                 break;

  1824             }

  1825             if (e.catch_cpx != 0) { //not finally

  1826                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1827                 addReference(classInternalName);

  1828                 if ("java/lang/Throwable".equals(classInternalName)) {

  1829                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1830                     out.append("  var stA0 = e;");

  1831                     out.append("} else {");

  1832                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1833                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1834                     out.append("}");

  1835                     out.append("gt=" + e.handler_pc + "; continue;");

  1836                 } else {

  1837                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1838                     out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");

  1839                     out.append("}\n");

  1840                 }

  1841             } else {

  1842                 finallyPC = e.handler_pc;

  1843             }

  1844         }

  1845         if (finallyPC == -1) {

  1846             out.append("throw e;");

  1847         } else {

  1848             out.append("gt=" + finallyPC + "; var stA0 = e; continue;");

  1849         }

  1850         out.append("\n}");

  1851     }

  1852 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Thu, 07 Feb 2013 13:07:22 +0100
branch	emul
changeset 695	dbcd1a21f3f8
parent 666	8338ab1991e6
parent 679	ee595aae8353
child 711	333326d65bf9
permissions	-rw-r--r--