hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@a13e33fd5c2e

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

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

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

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

   139             } else {

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

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

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

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

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

   145                    .append("; };");

   146             }

   147         }

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

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

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

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

   152                 "name", "value"

   153             );

   154             if (only != null) {

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

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

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

   158                 }

   159                 continue;

   160             }

   161             String prefix;

   162             String mn;

   163             if (m.isStatic()) {

   164                 prefix = "\n    c.";

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

   166             } else {

   167                 if (m.isConstructor()) {

   168                     prefix = "\n    CLS.";

   169                     mn = generateInstanceMethod(prefix, m);

   170                 } else {

   171                     prefix = "\n    c.";

   172                     mn = generateInstanceMethod(prefix, m);

   173                 }

   174             }

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

   176             if (runAnno != null) {

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

   178                 generateAnno(jc, out, runAnno);

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

   180             }

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

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

   183         }

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

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

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

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

   188         }

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

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

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

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

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

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

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

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

   197         if (classAnno != null) {

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

   199             generateAnno(jc, out, classAnno);

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

   201         }

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

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

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

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

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

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

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

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

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

   211                 "name", "value"

   212             );

   213             if (only != null) {

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

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

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

   217                 }

   218                 continue;

   219             }

   220             if (!v.isStatic()) {

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

   222                     append(className).append('_').

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

   224             }

   225         }

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

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

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

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

   230         StringBuilder sb = new StringBuilder();

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

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

   233         }

   234         return sb.toString();

   235     }

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

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

   238         if (jsb != null) {

   239             return jsb;

   240         }

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

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

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

   244         }

   245         generateMethod(prefix, mn, m);

   246         return mn;

   247     }

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

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

   251         if (jsb != null) {

   252             return jsb;

   253         }

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

   255         generateMethod(prefix, mn, m);

   256         return mn;

   257     }

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

   260             throws IOException {

   261         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   262         TrapDataIterator trap = m.getTrapDataIterator();

   263         final LocalsMapper lmapper =

   264                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   271         if (byteCodes == null) {

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

   273                .append(jc.getClassName()).append('.')

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

   275             out.append("};");

   276             return;

   277         }

   279         final StackMapper smapper = new StackMapper();

   281         if (!m.isStatic()) {

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

   283         }

   285         int lastStackFrame = -1;

   286         TrapData[] previousTrap = null;

   287         boolean wide = false;

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

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

   291             int prev = i;

   292             stackMapIterator.advanceTo(i);

   293             boolean changeInCatch = trap.advanceTo(i);

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

   295                 if (previousTrap != null) {

   296                     generateCatch(previousTrap);

   297                     previousTrap = null;

   298                 }

   299             }

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

   301                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   305                 changeInCatch = true;

   306             } else {

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

   308             }

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

   310                 out.append("try {");

   311                 previousTrap = trap.current();

   312             }

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

   314             switch (c) {

   315                 case opc_aload_0:

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

   317                     break;

   318                 case opc_iload_0:

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

   320                     break;

   321                 case opc_lload_0:

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

   323                     break;

   324                 case opc_fload_0:

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

   326                     break;

   327                 case opc_dload_0:

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

   329                     break;

   330                 case opc_aload_1:

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

   332                     break;

   333                 case opc_iload_1:

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

   335                     break;

   336                 case opc_lload_1:

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

   338                     break;

   339                 case opc_fload_1:

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

   341                     break;

   342                 case opc_dload_1:

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

   344                     break;

   345                 case opc_aload_2:

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

   347                     break;

   348                 case opc_iload_2:

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

   350                     break;

   351                 case opc_lload_2:

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

   353                     break;

   354                 case opc_fload_2:

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

   356                     break;

   357                 case opc_dload_2:

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

   359                     break;

   360                 case opc_aload_3:

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

   362                     break;

   363                 case opc_iload_3:

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

   365                     break;

   366                 case opc_lload_3:

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

   368                     break;

   369                 case opc_fload_3:

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

   371                     break;

   372                 case opc_dload_3:

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

   374                     break;

   375                 case opc_iload: {

   376                     ++i;

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

   378                                           : readUByte(byteCodes, i);

   379                     wide = false;

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

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

   382                     break;

   383                 }

   384                 case opc_lload: {

   385                     ++i;

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

   387                                           : readUByte(byteCodes, i);

   388                     wide = false;

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

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

   391                     break;

   392                 }

   393                 case opc_fload: {

   394                     ++i;

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

   396                                           : readUByte(byteCodes, i);

   397                     wide = false;

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

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

   400                     break;

   401                 }

   402                 case opc_dload: {

   403                     ++i;

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

   405                                           : readUByte(byteCodes, i);

   406                     wide = false;

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

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

   409                     break;

   410                 }

   411                 case opc_aload: {

   412                     ++i;

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

   414                                           : readUByte(byteCodes, i);

   415                     wide = false;

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

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

   418                     break;

   419                 }

   420                 case opc_istore: {

   421                     ++i;

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

   423                                           : readUByte(byteCodes, i);

   424                     wide = false;

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

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

   427                     break;

   428                 }

   429                 case opc_lstore: {

   430                     ++i;

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

   432                                           : readUByte(byteCodes, i);

   433                     wide = false;

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

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

   436                     break;

   437                 }

   438                 case opc_fstore: {

   439                     ++i;

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

   441                                           : readUByte(byteCodes, i);

   442                     wide = false;

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

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

   445                     break;

   446                 }

   447                 case opc_dstore: {

   448                     ++i;

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

   450                                           : readUByte(byteCodes, i);

   451                     wide = false;

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

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

   454                     break;

   455                 }

   456                 case opc_astore: {

   457                     ++i;

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

   459                                           : readUByte(byteCodes, i);

   460                     wide = false;

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

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

   463                     break;

   464                 }

   465                 case opc_astore_0:

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

   467                     break;

   468                 case opc_istore_0:

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

   470                     break;

   471                 case opc_lstore_0:

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

   473                     break;

   474                 case opc_fstore_0:

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

   476                     break;

   477                 case opc_dstore_0:

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

   479                     break;

   480                 case opc_astore_1:

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

   482                     break;

   483                 case opc_istore_1:

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

   485                     break;

   486                 case opc_lstore_1:

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

   488                     break;

   489                 case opc_fstore_1:

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

   491                     break;

   492                 case opc_dstore_1:

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

   494                     break;

   495                 case opc_astore_2:

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

   497                     break;

   498                 case opc_istore_2:

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

   500                     break;

   501                 case opc_lstore_2:

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

   503                     break;

   504                 case opc_fstore_2:

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

   506                     break;

   507                 case opc_dstore_2:

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

   509                     break;

   510                 case opc_astore_3:

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

   512                     break;

   513                 case opc_istore_3:

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

   515                     break;

   516                 case opc_lstore_3:

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

   518                     break;

   519                 case opc_fstore_3:

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

   521                     break;

   522                 case opc_dstore_3:

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

   524                     break;

   525                 case opc_iadd:

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

   527                     break;

   528                 case opc_ladd:

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

   530                     break;

   531                 case opc_fadd:

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

   533                     break;

   534                 case opc_dadd:

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

   536                     break;

   537                 case opc_isub:

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

   539                     break;

   540                 case opc_lsub:

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

   542                     break;

   543                 case opc_fsub:

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

   545                     break;

   546                 case opc_dsub:

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

   548                     break;

   549                 case opc_imul:

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

   551                     break;

   552                 case opc_lmul:

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

   554                     break;

   555                 case opc_fmul:

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

   557                     break;

   558                 case opc_dmul:

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

   560                     break;

   561                 case opc_idiv:

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

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

   564                     break;

   565                 case opc_ldiv:

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

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

   568                     break;

   569                 case opc_fdiv:

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

   571                     break;

   572                 case opc_ddiv:

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

   574                     break;

   575                 case opc_irem:

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

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

   578                     break;

   579                 case opc_lrem:

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

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

   582                     break;

   583                 case opc_frem:

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

   585                     break;

   586                 case opc_drem:

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

   588                     break;

   589                 case opc_iand:

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

   591                     break;

   592                 case opc_land:

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

   594                     break;

   595                 case opc_ior:

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

   597                     break;

   598                 case opc_lor:

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

   600                     break;

   601                 case opc_ixor:

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

   603                     break;

   604                 case opc_lxor:

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

   606                     break;

   607                 case opc_ineg:

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

   609                     break;

   610                 case opc_lneg:

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

   612                     break;

   613                 case opc_fneg:

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

   615                     break;

   616                 case opc_dneg:

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

   618                     break;

   619                 case opc_ishl:

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

   621                     break;

   622                 case opc_lshl:

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

   624                     break;

   625                 case opc_ishr:

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

   627                     break;

   628                 case opc_lshr:

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

   630                     break;

   631                 case opc_iushr:

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

   633                     break;

   634                 case opc_lushr:

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

   636                     break;

   637                 case opc_iinc: {

   638                     ++i;

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

   640                                              : readUByte(byteCodes, i);

   641                     ++i;

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

   643                                             : byteCodes[i];

   644                     wide = false;

   645                     if (incrBy == 1) {

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

   647                     } else {

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

   649                              lmapper.getI(varIndx),

   650                              Integer.toString(incrBy));

   651                     }

   652                     break;

   653                 }

   654                 case opc_return:

   655                     emit(out, "return;");

   656                     break;

   657                 case opc_ireturn:

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

   659                     break;

   660                 case opc_lreturn:

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

   662                     break;

   663                 case opc_freturn:

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

   665                     break;

   666                 case opc_dreturn:

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

   668                     break;

   669                 case opc_areturn:

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

   671                     break;

   672                 case opc_i2l:

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

   674                     break;

   675                 case opc_i2f:

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

   677                     break;

   678                 case opc_i2d:

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

   680                     break;

   681                 case opc_l2i:

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

   683                     break;

   684                     // max int check?

   685                 case opc_l2f:

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

   687                     break;

   688                 case opc_l2d:

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

   690                     break;

   691                 case opc_f2d:

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

   693                     break;

   694                 case opc_d2f:

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

   696                     break;

   697                 case opc_f2i:

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

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

   700                     break;

   701                 case opc_f2l:

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

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

   704                     break;

   705                 case opc_d2i:

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

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

   708                     break;

   709                 case opc_d2l:

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

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

   712                     break;

   713                 case opc_i2b:

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

   715                     break;

   716                 case opc_i2c:

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

   718                     break;

   719                 case opc_i2s:

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

   721                     break;

   722                 case opc_aconst_null:

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

   724                     break;

   725                 case opc_iconst_m1:

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

   727                     break;

   728                 case opc_iconst_0:

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

   730                     break;

   731                 case opc_dconst_0:

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

   733                     break;

   734                 case opc_lconst_0:

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

   736                     break;

   737                 case opc_fconst_0:

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

   739                     break;

   740                 case opc_iconst_1:

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

   742                     break;

   743                 case opc_lconst_1:

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

   745                     break;

   746                 case opc_fconst_1:

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

   748                     break;

   749                 case opc_dconst_1:

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

   751                     break;

   752                 case opc_iconst_2:

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

   754                     break;

   755                 case opc_fconst_2:

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

   757                     break;

   758                 case opc_iconst_3:

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

   760                     break;

   761                 case opc_iconst_4:

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

   763                     break;

   764                 case opc_iconst_5:

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

   766                     break;

   767                 case opc_ldc: {

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

   769                     String v = encodeConstant(indx);

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

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

   772                     break;

   773                 }

   774                 case opc_ldc_w:

   775                 case opc_ldc2_w: {

   776                     int indx = readIntArg(byteCodes, i);

   777                     i += 2;

   778                     String v = encodeConstant(indx);

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

   780                     if (type == VarType.LONG) {

   781                         final Long lv = new Long(v);

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

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

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

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

   786                     } else {

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

   788                     }

   789                     break;

   790                 }

   791                 case opc_lcmp:

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

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

   794                     break;

   795                 case opc_fcmpl:

   796                 case opc_fcmpg:

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

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

   799                     break;

   800                 case opc_dcmpl:

   801                 case opc_dcmpg:

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

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

   804                     break;

   805                 case opc_if_acmpeq:

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

   807                                    "===");

   808                     break;

   809                 case opc_if_acmpne:

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

   811                                    "!=");

   812                     break;

   813                 case opc_if_icmpeq:

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

   815                                    "==");

   816                     break;

   817                 case opc_ifeq: {

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

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

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

   821                     i += 2;

   822                     break;

   823                 }

   824                 case opc_ifne: {

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

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

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

   828                     i += 2;

   829                     break;

   830                 }

   831                 case opc_iflt: {

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

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

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

   835                     i += 2;

   836                     break;

   837                 }

   838                 case opc_ifle: {

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

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

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

   842                     i += 2;

   843                     break;

   844                 }

   845                 case opc_ifgt: {

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

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

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

   849                     i += 2;

   850                     break;

   851                 }

   852                 case opc_ifge: {

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

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

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

   856                     i += 2;

   857                     break;

   858                 }

   859                 case opc_ifnonnull: {

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

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

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

   863                     i += 2;

   864                     break;

   865                 }

   866                 case opc_ifnull: {

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

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

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

   870                     i += 2;

   871                     break;

   872                 }

   873                 case opc_if_icmpne:

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

   875                                    "!=");

   876                     break;

   877                 case opc_if_icmplt:

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

   879                                    "<");

   880                     break;

   881                 case opc_if_icmple:

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

   883                                    "<=");

   884                     break;

   885                 case opc_if_icmpgt:

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

   887                                    ">");

   888                     break;

   889                 case opc_if_icmpge:

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

   891                                    ">=");

   892                     break;

   893                 case opc_goto: {

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

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

   896                     i += 2;

   897                     break;

   898                 }

   899                 case opc_lookupswitch: {

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

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

   902                     table += 4;

   903                     int n = readInt4(byteCodes, table);

   904                     table += 4;

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

   906                     while (n-- > 0) {

   907                         int cnstnt = readInt4(byteCodes, table);

   908                         table += 4;

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

   910                         table += 4;

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

   912                     }

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

   914                     i = table - 1;

   915                     break;

   916                 }

   917                 case opc_tableswitch: {

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

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

   920                     table += 4;

   921                     int low = readInt4(byteCodes, table);

   922                     table += 4;

   923                     int high = readInt4(byteCodes, table);

   924                     table += 4;

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

   926                     while (low <= high) {

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

   928                         table += 4;

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

   930                         low++;

   931                     }

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

   933                     i = table - 1;

   934                     break;

   935                 }

   936                 case opc_invokeinterface: {

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

   938                     break;

   939                 }

   940                 case opc_invokevirtual:

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

   942                     break;

   943                 case opc_invokespecial:

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

   945                     break;

   946                 case opc_invokestatic:

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

   948                     break;

   949                 case opc_new: {

   950                     int indx = readIntArg(byteCodes, i);

   951                     String ci = jc.getClassName(indx);

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

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

   954                     addReference(ci);

   955                     i += 2;

   956                     break;

   957                 }

   958                 case opc_newarray:

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

   960                     String jvmType;

   961                     switch (atype) {

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

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

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

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

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

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

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

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

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

   971                     }

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

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

   974                     break;

   975                 case opc_anewarray: {

   976                     int type = readIntArg(byteCodes, i);

   977                     i += 2;

   978                     String typeName = jc.getClassName(type);

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

   980                         typeName = "[" + typeName;

   981                     } else {

   982                         typeName = "[L" + typeName + ";";

   983                     }

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

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

   986                     break;

   987                 }

   988                 case opc_multianewarray: {

   989                     int type = readIntArg(byteCodes, i);

   990                     i += 2;

   991                     String typeName = jc.getClassName(type);

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

   993                     StringBuilder dims = new StringBuilder();

   994                     dims.append('[');

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

   996                         if (d != 0) {

   997                             dims.append(",");

   998                         }

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

  1000                     }

  1001                     dims.append(']');

  1002                     emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  1003                          dims.toString(), smapper.pushA(), typeName);

  1004                     break;

  1005                 }

  1006                 case opc_arraylength:

  1007                     emit(out, "var @2 = @1.length;",

  1008                          smapper.popA(), smapper.pushI());

  1009                     break;

  1010                 case opc_lastore:

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

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

  1013                     break;

  1014                 case opc_fastore:

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

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

  1017                     break;

  1018                 case opc_dastore:

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

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

  1021                     break;

  1022                 case opc_aastore:

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

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

  1025                     break;

  1026                 case opc_iastore:

  1027                 case opc_bastore:

  1028                 case opc_castore:

  1029                 case opc_sastore:

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

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

  1032                     break;

  1033                 case opc_laload:

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

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

  1036                     break;

  1037                 case opc_faload:

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

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

  1040                     break;

  1041                 case opc_daload:

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

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

  1044                     break;

  1045                 case opc_aaload:

  1046                     emit(out, "var @3 = @2.at(@1);",

  1047                          smapper.popI(), smapper.popA(), smapper.pushA());

  1048                     break;

  1049                 case opc_iaload:

  1050                 case opc_baload:

  1051                 case opc_caload:

  1052                 case opc_saload:

  1053                     emit(out, "var @3 = @2.at(@1);",

  1054                          smapper.popI(), smapper.popA(), smapper.pushI());

  1055                     break;

  1056                 case opc_pop:

  1057                 case opc_pop2:

  1058                     smapper.pop(1);

  1059                     debug("/* pop */");

  1060                     break;

  1061                 case opc_dup: {

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

  1063                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1064                     break;

  1065                 }

  1066                 case opc_dup2: {

  1067                     final Variable vi1 = smapper.get(0);

  1069                     if (vi1.isCategory2()) {

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

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

  1072                     } else {

  1073                         final Variable vi2 = smapper.get(1);

  1074                         emit(out, "var @1 = @2, @3 = @4;",

  1075                              smapper.pushT(vi2.getType()), vi2,

  1076                              smapper.pushT(vi1.getType()), vi1);

  1077                     }

  1078                     break;

  1079                 }

  1080                 case opc_dup_x1: {

  1081                     final Variable vi1 = smapper.pop();

  1082                     final Variable vi2 = smapper.pop();

  1083                     final Variable vo3 = smapper.pushT(vi1.getType());

  1084                     final Variable vo2 = smapper.pushT(vi2.getType());

  1085                     final Variable vo1 = smapper.pushT(vi1.getType());

  1087                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1088                          vo1, vi1, vo2, vi2, vo3, vo1);

  1089                     break;

  1090                 }

  1091                 case opc_dup2_x1: {

  1092                     final Variable vi1 = smapper.pop();

  1093                     final Variable vi2 = smapper.pop();

  1095                     if (vi1.isCategory2()) {

  1096                         final Variable vo3 = smapper.pushT(vi1.getType());

  1097                         final Variable vo2 = smapper.pushT(vi2.getType());

  1098                         final Variable vo1 = smapper.pushT(vi1.getType());

  1100                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1101                              vo1, vi1, vo2, vi2, vo3, vo1);

  1102                     } else {

  1103                         final Variable vi3 = smapper.pop();

  1104                         final Variable vo5 = smapper.pushT(vi2.getType());

  1105                         final Variable vo4 = smapper.pushT(vi1.getType());

  1106                         final Variable vo3 = smapper.pushT(vi3.getType());

  1107                         final Variable vo2 = smapper.pushT(vi2.getType());

  1108                         final Variable vo1 = smapper.pushT(vi1.getType());

  1110                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1111                              vo1, vi1, vo2, vi2, vo3, vi3);

  1112                         emit(out, " @1 = @2, @3 = @4;",

  1113                              vo4, vo1, vo5, vo2);

  1114                     }

  1115                     break;

  1116                 }

  1117                 case opc_dup_x2: {

  1118                     final Variable vi1 = smapper.pop();

  1119                     final Variable vi2 = smapper.pop();

  1121                     if (vi2.isCategory2()) {

  1122                         final Variable vo3 = smapper.pushT(vi1.getType());

  1123                         final Variable vo2 = smapper.pushT(vi2.getType());

  1124                         final Variable vo1 = smapper.pushT(vi1.getType());

  1126                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1127                              vo1, vi1, vo2, vi2, vo3, vo1);

  1128                     } else {

  1129                         final Variable vi3 = smapper.pop();

  1130                         final Variable vo4 = smapper.pushT(vi1.getType());

  1131                         final Variable vo3 = smapper.pushT(vi3.getType());

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

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

  1135                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1136                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1137                     }

  1138                     break;

  1139                 }

  1140                 case opc_dup2_x2: {

  1141                     final Variable vi1 = smapper.pop();

  1142                     final Variable vi2 = smapper.pop();

  1144                     if (vi1.isCategory2()) {

  1145                         if (vi2.isCategory2()) {

  1146                             final Variable vo3 = smapper.pushT(vi1.getType());

  1147                             final Variable vo2 = smapper.pushT(vi2.getType());

  1148                             final Variable vo1 = smapper.pushT(vi1.getType());

  1150                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1151                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1152                         } else {

  1153                             final Variable vi3 = smapper.pop();

  1154                             final Variable vo4 = smapper.pushT(vi1.getType());

  1155                             final Variable vo3 = smapper.pushT(vi3.getType());

  1156                             final Variable vo2 = smapper.pushT(vi2.getType());

  1157                             final Variable vo1 = smapper.pushT(vi1.getType());

  1159                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1160                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1161                         }

  1162                     } else {

  1163                         final Variable vi3 = smapper.pop();

  1165                         if (vi3.isCategory2()) {

  1166                             final Variable vo5 = smapper.pushT(vi2.getType());

  1167                             final Variable vo4 = smapper.pushT(vi1.getType());

  1168                             final Variable vo3 = smapper.pushT(vi3.getType());

  1169                             final Variable vo2 = smapper.pushT(vi2.getType());

  1170                             final Variable vo1 = smapper.pushT(vi1.getType());

  1172                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1173                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1174                             emit(out, " @1 = @2, @3 = @4;",

  1175                                  vo4, vo1, vo5, vo2);

  1176                         } else {

  1177                             final Variable vi4 = smapper.pop();

  1178                             final Variable vo6 = smapper.pushT(vi2.getType());

  1179                             final Variable vo5 = smapper.pushT(vi1.getType());

  1180                             final Variable vo4 = smapper.pushT(vi4.getType());

  1181                             final Variable vo3 = smapper.pushT(vi3.getType());

  1182                             final Variable vo2 = smapper.pushT(vi2.getType());

  1183                             final Variable vo1 = smapper.pushT(vi1.getType());

  1185                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1186                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1187                             emit(out, " @1 = @2, @3 = @4;",

  1188                                  vo5, vo1, vo6, vo2);

  1189                         }

  1190                     }

  1191                     break;

  1192                 }

  1193                 case opc_swap: {

  1194                     final Variable vi1 = smapper.get(0);

  1195                     final Variable vi2 = smapper.get(1);

  1197                     if (vi1.getType() == vi2.getType()) {

  1198                         final Variable tmp = smapper.pushT(vi1.getType());

  1200                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1201                              tmp, vi1, vi2);

  1202                         smapper.pop(1);

  1203                     } else {

  1204                         smapper.pop(2);

  1205                         smapper.pushT(vi1.getType());

  1206                         smapper.pushT(vi2.getType());

  1207                     }

  1208                     break;

  1209                 }

  1210                 case opc_bipush:

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

  1212                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1213                     break;

  1214                 case opc_sipush:

  1215                     emit(out, "var @1 = @2;",

  1216                          smapper.pushI(),

  1217                          Integer.toString(readIntArg(byteCodes, i)));

  1218                     i += 2;

  1219                     break;

  1220                 case opc_getfield: {

  1221                     int indx = readIntArg(byteCodes, i);

  1222                     String[] fi = jc.getFieldInfoName(indx);

  1223                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1224                     final String mangleClass = mangleSig(fi[0]);

  1225                     final String mangleClassAccess = accessClass(mangleClass);

  1226                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1227                          smapper.popA(),

  1228                          smapper.pushT(type), fi[1], mangleClassAccess

  1229                     );

  1230                     i += 2;

  1231                     break;

  1232                 }

  1233                 case opc_putfield: {

  1234                     int indx = readIntArg(byteCodes, i);

  1235                     String[] fi = jc.getFieldInfoName(indx);

  1236                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1237                     final String mangleClass = mangleSig(fi[0]);

  1238                     final String mangleClassAccess = accessClass(mangleClass);

  1239                     emit(out, "@4(false)._@3.call(@2, @1);",

  1240                          smapper.popT(type),

  1241                          smapper.popA(), fi[1],

  1242                          mangleClassAccess

  1243                     );

  1244                     i += 2;

  1245                     break;

  1246                 }

  1247                 case opc_getstatic: {

  1248                     int indx = readIntArg(byteCodes, i);

  1249                     String[] fi = jc.getFieldInfoName(indx);

  1250                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1251                     emit(out, "var @1 = @2(false)._@3();",

  1252                          smapper.pushT(type),

  1253                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1254                     i += 2;

  1255                     addReference(fi[0]);

  1256                     break;

  1257                 }

  1258                 case opc_putstatic: {

  1259                     int indx = readIntArg(byteCodes, i);

  1260                     String[] fi = jc.getFieldInfoName(indx);

  1261                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1262                     emit(out, "@1(false)._@2(@3);",

  1263                          accessClass(fi[0].replace('/', '_')), fi[1],

  1264                          smapper.popT(type));

  1265                     i += 2;

  1266                     addReference(fi[0]);

  1267                     break;

  1268                 }

  1269                 case opc_checkcast: {

  1270                     int indx = readIntArg(byteCodes, i);

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

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

  1273                         emit(out,

  1274                              "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1275                              smapper.getA(0), type.replace('/', '_'));

  1276                     } else {

  1277                         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);",

  1278                              smapper.getA(0), type

  1279                         );

  1280                     }

  1281                     i += 2;

  1282                     break;

  1283                 }

  1284                 case opc_instanceof: {

  1285                     int indx = readIntArg(byteCodes, i);

  1286                     final String type = jc.getClassName(indx);

  1287                     if (!type.startsWith("[")) {

  1288                         emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

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

  1290                              type.replace('/', '_'));

  1291                     } else {

  1292                         emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1293                             smapper.popA(), smapper.pushI(),

  1294                             type

  1295                         );

  1296                     }

  1297                     i += 2;

  1298                     break;

  1299                 }

  1300                 case opc_athrow: {

  1301                     final Variable v = smapper.popA();

  1302                     smapper.clear();

  1304                     emit(out, "{ var @1 = @2; throw @2; }",

  1305                          smapper.pushA(), v);

  1306                     break;

  1307                 }

  1309                 case opc_monitorenter: {

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

  1311                     smapper.popA();

  1312                     break;

  1313                 }

  1315                 case opc_monitorexit: {

  1316                     out.append("/* monitor exit */");

  1317                     smapper.popA();

  1318                     break;

  1319                 }

  1321                 case opc_wide:

  1322                     wide = true;

  1323                     break;

  1325                 default: {

  1326                     wide = false;

  1327                     emit(out, "throw 'unknown bytecode @1';",

  1328                          Integer.toString(c));

  1329                 }

  1330             }

  1331             if (debug(" //")) {

  1332                 for (int j = prev; j <= i; j++) {

  1333                     out.append(" ");

  1334                     final int cc = readUByte(byteCodes, j);

  1335                     out.append(Integer.toString(cc));

  1336                 }

  1337             }

  1338             out.append("\n");

  1339         }

  1340         if (previousTrap != null) {

  1341             generateCatch(previousTrap);

  1342         }

  1343         out.append("  }\n");

  1344         out.append("};");

  1345     }

  1347     private int generateIf(byte[] byteCodes, int i,

  1348                            final Variable v2, final Variable v1,

  1349                            final String test) throws IOException {

  1350         int indx = i + readIntArg(byteCodes, i);

  1351         out.append("if (").append(v1)

  1352            .append(' ').append(test).append(' ')

  1353            .append(v2).append(") { gt = " + indx)

  1354            .append("; continue; }");

  1355         return i + 2;

  1356     }

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

  1359         final int indxHi = byteCodes[offsetInstruction + 1] << 8;

  1360         final int indxLo = byteCodes[offsetInstruction + 2];

  1361         return (indxHi & 0xffffff00) | (indxLo & 0xff);

  1362     }

  1363     private int readInt4(byte[] byteCodes, int offset) {

  1364         final int d = byteCodes[offset + 0] << 24;

  1365         final int c = byteCodes[offset + 1] << 16;

  1366         final int b = byteCodes[offset + 2] << 8;

  1367         final int a = byteCodes[offset + 3];

  1368         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1369     }

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

  1371         return byteCodes[offset] & 0xff;

  1372     }

  1374     private int readUShort(byte[] byteCodes, int offset) {

  1375         return ((byteCodes[offset] & 0xff) << 8)

  1376                     | (byteCodes[offset + 1] & 0xff);

  1377     }

  1379     private int readShort(byte[] byteCodes, int offset) {

  1380         return (byteCodes[offset] << 8)

  1381                     | (byteCodes[offset + 1] & 0xff);

  1382     }

  1384     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1385         int i = 0;

  1386         Boolean count = null;

  1387         boolean array = false;

  1388         sig.append("__");

  1389         int firstPos = sig.length();

  1390         while (i < descriptor.length()) {

  1391             char ch = descriptor.charAt(i++);

  1392             switch (ch) {

  1393                 case '(':

  1394                     count = true;

  1395                     continue;

  1396                 case ')':

  1397                     count = false;

  1398                     continue;

  1399                 case 'B':

  1400                 case 'C':

  1401                 case 'D':

  1402                 case 'F':

  1403                 case 'I':

  1404                 case 'J':

  1405                 case 'S':

  1406                 case 'Z':

  1407                     if (count) {

  1408                         if (array) {

  1409                             sig.append("_3");

  1410                         }

  1411                         sig.append(ch);

  1412                         if (ch == 'J' || ch == 'D') {

  1413                             cnt.append('1');

  1414                         } else {

  1415                             cnt.append('0');

  1416                         }

  1417                     } else {

  1418                         sig.insert(firstPos, ch);

  1419                         if (array) {

  1420                             returnType[0] = '[';

  1421                             sig.insert(firstPos, "_3");

  1422                         } else {

  1423                             returnType[0] = ch;

  1424                         }

  1425                     }

  1426                     array = false;

  1427                     continue;

  1428                 case 'V':

  1429                     assert !count;

  1430                     returnType[0] = 'V';

  1431                     sig.insert(firstPos, 'V');

  1432                     continue;

  1433                 case 'L':

  1434                     int next = descriptor.indexOf(';', i);

  1435                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1436                     if (count) {

  1437                         if (array) {

  1438                             sig.append("_3");

  1439                         }

  1440                         sig.append(realSig);

  1441                         cnt.append('0');

  1442                     } else {

  1443                         sig.insert(firstPos, realSig);

  1444                         if (array) {

  1445                             sig.insert(firstPos, "_3");

  1446                         }

  1447                         returnType[0] = 'L';

  1448                     }

  1449                     i = next + 1;

  1450                     array = false;

  1451                     continue;

  1452                 case '[':

  1453                     array = true;

  1454                     continue;

  1455                 default:

  1456                     throw new IllegalStateException("Invalid char: " + ch);

  1457             }

  1458         }

  1459     }

  1461     static String mangleSig(String sig) {

  1462         return mangleSig(sig, 0, sig.length());

  1463     }

  1465     private static String mangleSig(String txt, int first, int last) {

  1466         StringBuilder sb = new StringBuilder();

  1467         for (int i = first; i < last; i++) {

  1468             final char ch = txt.charAt(i);

  1469             switch (ch) {

  1470                 case '/': sb.append('_'); break;

  1471                 case '_': sb.append("_1"); break;

  1472                 case ';': sb.append("_2"); break;

  1473                 case '[': sb.append("_3"); break;

  1474                 default: sb.append(ch); break;

  1475             }

  1476         }

  1477         return sb.toString();

  1478     }

  1480     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1481         StringBuilder name = new StringBuilder();

  1482         if ("<init>".equals(m.getName())) { // NOI18N

  1483             name.append("cons"); // NOI18N

  1484         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1485             name.append("class"); // NOI18N

  1486         } else {

  1487             name.append(m.getName());

  1488         }

  1490         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1491         return name.toString();

  1492     }

  1494     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1495         StringBuilder name = new StringBuilder();

  1496         String descr = mi[2];//mi.getDescriptor();

  1497         String nm= mi[1];

  1498         if ("<init>".equals(nm)) { // NOI18N

  1499             name.append("cons"); // NOI18N

  1500         } else {

  1501             name.append(nm);

  1502         }

  1503         countArgs(descr, returnType, name, cnt);

  1504         return name.toString();

  1505     }

  1507     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1508     throws IOException {

  1509         int methodIndex = readIntArg(byteCodes, i);

  1510         String[] mi = jc.getFieldInfoName(methodIndex);

  1511         char[] returnType = { 'V' };

  1512         StringBuilder cnt = new StringBuilder();

  1513         String mn = findMethodName(mi, cnt, returnType);

  1515         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1516         final Variable[] vars = new Variable[numArguments];

  1518         for (int j = numArguments - 1; j >= 0; --j) {

  1519             vars[j] = mapper.pop();

  1520         }

  1522         if (returnType[0] != 'V') {

  1523             out.append("var ")

  1524                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1525                .append(" = ");

  1526         }

  1528         final String in = mi[0];

  1529         out.append(accessClass(in.replace('/', '_')));

  1530         out.append("(false).");

  1531         if (mn.startsWith("cons_")) {

  1532             out.append("constructor.");

  1533         }

  1534         out.append(mn);

  1535         if (isStatic) {

  1536             out.append('(');

  1537         } else {

  1538             out.append(".call(");

  1539         }

  1540         if (numArguments > 0) {

  1541             out.append(vars[0]);

  1542             for (int j = 1; j < numArguments; ++j) {

  1543                 out.append(", ");

  1544                 out.append(vars[j]);

  1545             }

  1546         }

  1547         out.append(");");

  1548         i += 2;

  1549         addReference(in);

  1550         return i;

  1551     }

  1552     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1553     throws IOException {

  1554         int methodIndex = readIntArg(byteCodes, i);

  1555         String[] mi = jc.getFieldInfoName(methodIndex);

  1556         char[] returnType = { 'V' };

  1557         StringBuilder cnt = new StringBuilder();

  1558         String mn = findMethodName(mi, cnt, returnType);

  1560         final int numArguments = cnt.length() + 1;

  1561         final Variable[] vars = new Variable[numArguments];

  1563         for (int j = numArguments - 1; j >= 0; --j) {

  1564             vars[j] = mapper.pop();

  1565         }

  1567         if (returnType[0] != 'V') {

  1568             out.append("var ")

  1569                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1570                .append(" = ");

  1571         }

  1573         out.append(vars[0]).append('.');

  1574         out.append(mn);

  1575         out.append('(');

  1576         String sep = "";

  1577         for (int j = 1; j < numArguments; ++j) {

  1578             out.append(sep);

  1579             out.append(vars[j]);

  1580             sep = ", ";

  1581         }

  1582         out.append(");");

  1583         i += 2;

  1584         return i;

  1585     }

  1587     private void addReference(String cn) throws IOException {

  1588         if (requireReference(cn)) {

  1589             debug(" /* needs " + cn + " */");

  1590         }

  1591     }

  1593     private void outType(String d, StringBuilder out) {

  1594         int arr = 0;

  1595         while (d.charAt(0) == '[') {

  1596             out.append('A');

  1597             d = d.substring(1);

  1598         }

  1599         if (d.charAt(0) == 'L') {

  1600             assert d.charAt(d.length() - 1) == ';';

  1601             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1602         } else {

  1603             out.append(d);

  1604         }

  1605     }

  1607     private String encodeConstant(int entryIndex) throws IOException {

  1608         String[] classRef = { null };

  1609         String s = jc.stringValue(entryIndex, classRef);

  1610         if (classRef[0] != null) {

  1611             if (classRef[0].startsWith("[")) {

  1612                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1613             } else {

  1614                 addReference(classRef[0]);

  1615                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1616             }

  1617         }

  1618         return s;

  1619     }

  1621     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1622         byte[] arr = m.findAnnotationData(true);

  1623         if (arr == null) {

  1624             return null;

  1625         }

  1626         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1627         class P extends AnnotationParser {

  1628             public P() {

  1629                 super(false, true);

  1630             }

  1632             int cnt;

  1633             String[] args = new String[30];

  1634             String body;

  1636             @Override

  1637             protected void visitAttr(String type, String attr, String at, String value) {

  1638                 if (type.equals(jvmType)) {

  1639                     if ("body".equals(attr)) {

  1640                         body = value;

  1641                     } else if ("args".equals(attr)) {

  1642                         args[cnt++] = value;

  1643                     } else {

  1644                         throw new IllegalArgumentException(attr);

  1645                     }

  1646                 }

  1647             }

  1648         }

  1649         P p = new P();

  1650         p.parse(arr, jc);

  1651         if (p.body == null) {

  1652             return null;

  1653         }

  1654         StringBuilder cnt = new StringBuilder();

  1655         final String mn = findMethodName(m, cnt);

  1656         out.append(prefix).append(mn);

  1657         out.append(" = function(");

  1658         String space = "";

  1659         int index = 0;

  1660         for (int i = 0; i < cnt.length(); i++) {

  1661             out.append(space);

  1662             space = outputArg(out, p.args, index);

  1663             index++;

  1664         }

  1665         out.append(") {").append("\n");

  1666         out.append(p.body);

  1667         out.append("\n}\n");

  1668         return mn;

  1669     }

  1670     private static String className(ClassData jc) {

  1671         //return jc.getName().getInternalName().replace('/', '_');

  1672         return jc.getClassName().replace('/', '_');

  1673     }

  1675     private static String[] findAnnotation(

  1676         byte[] arr, ClassData cd, final String className,

  1677         final String... attrNames

  1678     ) throws IOException {

  1679         if (arr == null) {

  1680             return null;

  1681         }

  1682         final String[] values = new String[attrNames.length];

  1683         final boolean[] found = { false };

  1684         final String jvmType = "L" + className.replace('.', '/') + ";";

  1685         AnnotationParser ap = new AnnotationParser(false, true) {

  1686             @Override

  1687             protected void visitAttr(String type, String attr, String at, String value) {

  1688                 if (type.equals(jvmType)) {

  1689                     found[0] = true;

  1690                     for (int i = 0; i < attrNames.length; i++) {

  1691                         if (attrNames[i].equals(attr)) {

  1692                             values[i] = value;

  1693                         }

  1694                     }

  1695                 }

  1696             }

  1698         };

  1699         ap.parse(arr, cd);

  1700         return found[0] ? values : null;

  1701     }

  1703     private CharSequence initField(FieldData v) {

  1704         final String is = v.getInternalSig();

  1705         if (is.length() == 1) {

  1706             switch (is.charAt(0)) {

  1707                 case 'S':

  1708                 case 'J':

  1709                 case 'B':

  1710                 case 'Z':

  1711                 case 'C':

  1712                 case 'I': return " = 0;";

  1713                 case 'F':

  1714                 case 'D': return " = 0.0;";

  1715                 default:

  1716                     throw new IllegalStateException(is);

  1717             }

  1718         }

  1719         return " = null;";

  1720     }

  1722     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1723         AnnotationParser ap = new AnnotationParser(true, false) {

  1724             int[] cnt = new int[32];

  1725             int depth;

  1727             @Override

  1728             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1729                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1730                 requireReference(slashType);

  1732                 if (cnt[depth]++ > 0) {

  1733                     out.append(",");

  1734                 }

  1735                 if (top) {

  1736                     out.append('"').append(attrType).append("\" : ");

  1737                 }

  1738                 out.append("{\n");

  1739                 cnt[++depth] = 0;

  1740             }

  1742             @Override

  1743             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1744                 out.append("\n}\n");

  1745                 depth--;

  1746             }

  1748             @Override

  1749             protected void visitValueStart(String attrName, char type) throws IOException {

  1750                 if (cnt[depth]++ > 0) {

  1751                     out.append(",\n");

  1752                 }

  1753                 cnt[++depth] = 0;

  1754                 if (attrName != null) {

  1755                     out.append(attrName).append(" : ");

  1756                 }

  1757                 if (type == '[') {

  1758                     out.append("[");

  1759                 }

  1760             }

  1762             @Override

  1763             protected void visitValueEnd(String attrName, char type) throws IOException {

  1764                 if (type == '[') {

  1765                     out.append("]");

  1766                 }

  1767                 depth--;

  1768             }

  1770             @Override

  1771             protected void visitAttr(String type, String attr, String attrType, String value)

  1772             throws IOException {

  1773                 if (attr == null && value == null) {

  1774                     return;

  1775                 }

  1776                 out.append(value);

  1777             }

  1779             @Override

  1780             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1781             throws IOException {

  1782                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1783                 requireReference(slashType);

  1785                 out.append(accessClass(slashType.replace('/', '_')))

  1786                    .append("(false).constructor.").append(value);

  1787             }

  1788         };

  1789         ap.parse(data, cd);

  1790     }

  1792     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1793         final String name = args[indx];

  1794         if (name == null) {

  1795             return "";

  1796         }

  1797         if (name.contains(",")) {

  1798             throw new IOException("Wrong parameter with ',': " + name);

  1799         }

  1800         out.append(name);

  1801         return ",";

  1802     }

  1804     private static void emit(final Appendable out,

  1805                              final String format,

  1806                              final CharSequence... params) throws IOException {

  1807         final int length = format.length();

  1809         int processed = 0;

  1810         int paramOffset = format.indexOf('@');

  1811         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1812             final char paramChar = format.charAt(paramOffset + 1);

  1813             if ((paramChar >= '1') && (paramChar <= '9')) {

  1814                 final int paramIndex = paramChar - '0' - 1;

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

  1817                 out.append(params[paramIndex]);

  1819                 ++paramOffset;

  1820                 processed = paramOffset + 1;

  1821             }

  1823             paramOffset = format.indexOf('@', paramOffset + 1);

  1824         }

  1826         out.append(format, processed, length);

  1827     }

  1829     private void generateCatch(TrapData[] traps) throws IOException {

  1830         out.append("} catch (e) {\n");

  1831         int finallyPC = -1;

  1832         for (TrapData e : traps) {

  1833             if (e == null) {

  1834                 break;

  1835             }

  1836             if (e.catch_cpx != 0) { //not finally

  1837                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1838                 addReference(classInternalName);

  1839                 if ("java/lang/Throwable".equals(classInternalName)) {

  1840                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1841                     out.append("  var stA0 = e;");

  1842                     out.append("} else {");

  1843                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1844                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1845                     out.append("}");

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

  1847                 } else {

  1848                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

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

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

  1851                 }

  1852             } else {

  1853                 finallyPC = e.handler_pc;

  1854             }

  1855         }

  1856         if (finallyPC == -1) {

  1857             out.append("throw e;");

  1858         } else {

  1859             out.append("gt=" + finallyPC + "; var stA0 = e; continue;");

  1860         }

  1861         out.append("\n}");

  1862     }

  1863 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Wed, 27 Feb 2013 14:38:16 +0100
changeset 775	a13e33fd5c2e
parent 772	d382dacfd73f
child 788	bced0d6a7b20
permissions	-rw-r--r--