hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@8ece59d31fcf

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

    22 import static org.apidesign.vm4brwsr.ByteCodeParser.*;

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

    25  *

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

    27  */

    28 abstract class ByteCodeToJavaScript {

    29     private ClassData jc;

    30     final Appendable out;

    32     protected ByteCodeToJavaScript(Appendable out) {

    33         this.out = out;

    34     }

    36     /* Collects additional required resources.

    37      *

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

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

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

    41      */

    42     protected abstract boolean requireReference(String internalClassName);

    44     /*

    45      * @param resourcePath name of resources to read

    46      */

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

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

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

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

    52      *

    53      * @param className suggested name of the class

    54      */

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

    56         return className + " = ";

    57     }

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

    59         return classOperation;

    60     }

    62     /** Prints out a debug message.

    63      *

    64      * @param msg the message

    65      * @return true if the message has been printed

    66      * @throws IOException

    67      */

    68     boolean debug(String msg) throws IOException {

    69         out.append(msg);

    70         return true;

    71     }

    73     /**

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

    75      *

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

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

    78      *

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

    80      */

    82     public String compile(InputStream classFile) throws IOException {

    83         this.jc = new ClassData(classFile);

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

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

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

    87             );

    88         }

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

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

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

    92             "resource", "processByteCode"

    93         );

    94         if (arr != null) {

    95             requireScript(arr[0]);

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

    97                 return null;

    98             }

    99         }

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

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

   102             "container", "prototype"

   103         );

   104         StringArray toInitilize = new StringArray();

   105         final String className = className(jc);

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

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

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

   109         if (proto == null) {

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

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

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

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

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

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

   116         } else {

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

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

   119                 proto[0] = "p";

   120             }

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

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

   123         }

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

   125             if (v.isStatic()) {

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

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

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

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

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

   131             } else {

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

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

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

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

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

   137                    .append("; };");

   138             }

   139         }

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

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

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

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

   144                 "name", "value"

   145             );

   146             if (only != null) {

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

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

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

   150                 }

   151                 continue;

   152             }

   153             String prefix;

   154             String mn;

   155             if (m.isStatic()) {

   156                 prefix = "\n    c.";

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

   158             } else {

   159                 if (m.isConstructor()) {

   160                     prefix = "\n    CLS.";

   161                     mn = generateInstanceMethod(prefix, m);

   162                 } else {

   163                     prefix = "\n    c.";

   164                     mn = generateInstanceMethod(prefix, m);

   165                 }

   166             }

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

   168             if (runAnno != null) {

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

   170                 generateAnno(jc, out, runAnno);

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

   172             }

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

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

   175         }

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

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

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

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

   180         }

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

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

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

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

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

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

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

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

   189         if (classAnno != null) {

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

   191             generateAnno(jc, out, classAnno);

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

   193         }

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

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

   196         }

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

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

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

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

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

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

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

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

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

   206                 "name", "value"

   207             );

   208             if (only != null) {

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

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

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

   212                 }

   213                 continue;

   214             }

   215             if (!v.isStatic()) {

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

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

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

   219             }

   220         }

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

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

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

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

   225 //        StringBuilder sb = new StringBuilder();

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

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

   228 //        }

   229         return "";

   230     }

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

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

   233         if (jsb != null) {

   234             return jsb;

   235         }

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

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

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

   239         }

   240         generateMethod(prefix, mn, m);

   241         return mn;

   242     }

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

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

   246         if (jsb != null) {

   247             return jsb;

   248         }

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

   250         generateMethod(prefix, mn, m);

   251         return mn;

   252     }

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

   255             throws IOException {

   256         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   257         TrapDataIterator trap = m.getTrapDataIterator();

   258         final LocalsMapper lmapper =

   259                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   266         if (byteCodes == null) {

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

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

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

   270             out.append("};");

   271             return;

   272         }

   274         final StackMapper smapper = new StackMapper();

   276         if (!m.isStatic()) {

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

   278         }

   280         int lastStackFrame = -1;

   281         TrapData[] previousTrap = null;

   282         boolean wide = false;

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

   285         int openBraces = 0;

   286         int topMostLabel = 0;

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

   288             int prev = i;

   289             stackMapIterator.advanceTo(i);

   290             boolean changeInCatch = trap.advanceTo(i);

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

   292                 if (previousTrap != null) {

   293                     generateCatch(previousTrap, i, topMostLabel);

   294                     previousTrap = null;

   295                 }

   296             }

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

   298                 if (i != 0) {

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

   300                 }

   301                 if (openBraces > 64) {

   302                     for (int c = 0; c < 64; c++) {

   303                         out.append("break;}\n");

   304                     }

   305                     openBraces = 1;

   306                     topMostLabel = i;

   307                 }

   309                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

   312                 out.append("    X_" + i).append(": for (;;) { IF: if (gt <= " + i + ") {\n");

   313                 openBraces++;

   314                 changeInCatch = true;

   315             } else {

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

   317             }

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

   319                 out.append("try {");

   320                 previousTrap = trap.current();

   321             }

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

   323             switch (c) {

   324                 case opc_aload_0:

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

   326                     break;

   327                 case opc_iload_0:

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

   329                     break;

   330                 case opc_lload_0:

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

   332                     break;

   333                 case opc_fload_0:

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

   335                     break;

   336                 case opc_dload_0:

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

   338                     break;

   339                 case opc_aload_1:

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

   341                     break;

   342                 case opc_iload_1:

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

   344                     break;

   345                 case opc_lload_1:

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

   347                     break;

   348                 case opc_fload_1:

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

   350                     break;

   351                 case opc_dload_1:

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

   353                     break;

   354                 case opc_aload_2:

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

   356                     break;

   357                 case opc_iload_2:

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

   359                     break;

   360                 case opc_lload_2:

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

   362                     break;

   363                 case opc_fload_2:

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

   365                     break;

   366                 case opc_dload_2:

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

   368                     break;

   369                 case opc_aload_3:

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

   371                     break;

   372                 case opc_iload_3:

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

   374                     break;

   375                 case opc_lload_3:

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

   377                     break;

   378                 case opc_fload_3:

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

   380                     break;

   381                 case opc_dload_3:

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

   383                     break;

   384                 case opc_iload: {

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

   391                     break;

   392                 }

   393                 case opc_lload: {

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

   400                     break;

   401                 }

   402                 case opc_fload: {

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

   409                     break;

   410                 }

   411                 case opc_dload: {

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

   418                     break;

   419                 }

   420                 case opc_aload: {

   421                     ++i;

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

   423                                           : readUByte(byteCodes, i);

   424                     wide = false;

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

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

   427                     break;

   428                 }

   429                 case opc_istore: {

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

   436                     break;

   437                 }

   438                 case opc_lstore: {

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

   445                     break;

   446                 }

   447                 case opc_fstore: {

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

   454                     break;

   455                 }

   456                 case opc_dstore: {

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

   463                     break;

   464                 }

   465                 case opc_astore: {

   466                     ++i;

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

   468                                           : readUByte(byteCodes, i);

   469                     wide = false;

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

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

   472                     break;

   473                 }

   474                 case opc_astore_0:

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

   476                     break;

   477                 case opc_istore_0:

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

   479                     break;

   480                 case opc_lstore_0:

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

   482                     break;

   483                 case opc_fstore_0:

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

   485                     break;

   486                 case opc_dstore_0:

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

   488                     break;

   489                 case opc_astore_1:

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

   491                     break;

   492                 case opc_istore_1:

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

   494                     break;

   495                 case opc_lstore_1:

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

   497                     break;

   498                 case opc_fstore_1:

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

   500                     break;

   501                 case opc_dstore_1:

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

   503                     break;

   504                 case opc_astore_2:

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

   506                     break;

   507                 case opc_istore_2:

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

   509                     break;

   510                 case opc_lstore_2:

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

   512                     break;

   513                 case opc_fstore_2:

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

   515                     break;

   516                 case opc_dstore_2:

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

   518                     break;

   519                 case opc_astore_3:

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

   521                     break;

   522                 case opc_istore_3:

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

   524                     break;

   525                 case opc_lstore_3:

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

   527                     break;

   528                 case opc_fstore_3:

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

   530                     break;

   531                 case opc_dstore_3:

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

   533                     break;

   534                 case opc_iadd:

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

   536                     break;

   537                 case opc_ladd:

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

   539                     break;

   540                 case opc_fadd:

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

   542                     break;

   543                 case opc_dadd:

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

   545                     break;

   546                 case opc_isub:

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

   548                     break;

   549                 case opc_lsub:

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

   551                     break;

   552                 case opc_fsub:

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

   554                     break;

   555                 case opc_dsub:

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

   557                     break;

   558                 case opc_imul:

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

   560                     break;

   561                 case opc_lmul:

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

   563                     break;

   564                 case opc_fmul:

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

   566                     break;

   567                 case opc_dmul:

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

   569                     break;

   570                 case opc_idiv:

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

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

   573                     break;

   574                 case opc_ldiv:

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

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

   577                     break;

   578                 case opc_fdiv:

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

   580                     break;

   581                 case opc_ddiv:

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

   583                     break;

   584                 case opc_irem:

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

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

   587                     break;

   588                 case opc_lrem:

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

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

   591                     break;

   592                 case opc_frem:

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

   594                     break;

   595                 case opc_drem:

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

   597                     break;

   598                 case opc_iand:

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

   600                     break;

   601                 case opc_land:

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

   603                     break;

   604                 case opc_ior:

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

   606                     break;

   607                 case opc_lor:

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

   609                     break;

   610                 case opc_ixor:

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

   612                     break;

   613                 case opc_lxor:

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

   615                     break;

   616                 case opc_ineg:

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

   618                     break;

   619                 case opc_lneg:

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

   621                     break;

   622                 case opc_fneg:

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

   624                     break;

   625                 case opc_dneg:

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

   627                     break;

   628                 case opc_ishl:

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

   630                     break;

   631                 case opc_lshl:

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

   633                     break;

   634                 case opc_ishr:

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

   636                     break;

   637                 case opc_lshr:

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

   639                     break;

   640                 case opc_iushr:

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

   642                     break;

   643                 case opc_lushr:

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

   645                     break;

   646                 case opc_iinc: {

   647                     ++i;

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

   649                                              : readUByte(byteCodes, i);

   650                     ++i;

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

   652                                             : byteCodes[i];

   653                     wide = false;

   654                     if (incrBy == 1) {

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

   656                     } else {

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

   658                              lmapper.getI(varIndx),

   659                              Integer.toString(incrBy));

   660                     }

   661                     break;

   662                 }

   663                 case opc_return:

   664                     emit(out, "return;");

   665                     break;

   666                 case opc_ireturn:

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

   668                     break;

   669                 case opc_lreturn:

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

   671                     break;

   672                 case opc_freturn:

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

   674                     break;

   675                 case opc_dreturn:

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

   677                     break;

   678                 case opc_areturn:

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

   680                     break;

   681                 case opc_i2l:

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

   683                     break;

   684                 case opc_i2f:

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

   686                     break;

   687                 case opc_i2d:

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

   689                     break;

   690                 case opc_l2i:

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

   692                     break;

   693                     // max int check?

   694                 case opc_l2f:

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

   696                     break;

   697                 case opc_l2d:

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

   699                     break;

   700                 case opc_f2d:

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

   702                     break;

   703                 case opc_d2f:

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

   705                     break;

   706                 case opc_f2i:

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

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

   709                     break;

   710                 case opc_f2l:

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

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

   713                     break;

   714                 case opc_d2i:

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

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

   717                     break;

   718                 case opc_d2l:

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

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

   721                     break;

   722                 case opc_i2b:

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

   724                     break;

   725                 case opc_i2c:

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

   727                     break;

   728                 case opc_i2s:

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

   730                     break;

   731                 case opc_aconst_null:

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

   733                     break;

   734                 case opc_iconst_m1:

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

   736                     break;

   737                 case opc_iconst_0:

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

   739                     break;

   740                 case opc_dconst_0:

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

   742                     break;

   743                 case opc_lconst_0:

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

   745                     break;

   746                 case opc_fconst_0:

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

   748                     break;

   749                 case opc_iconst_1:

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

   751                     break;

   752                 case opc_lconst_1:

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

   754                     break;

   755                 case opc_fconst_1:

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

   757                     break;

   758                 case opc_dconst_1:

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

   760                     break;

   761                 case opc_iconst_2:

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

   763                     break;

   764                 case opc_fconst_2:

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

   766                     break;

   767                 case opc_iconst_3:

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

   769                     break;

   770                 case opc_iconst_4:

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

   772                     break;

   773                 case opc_iconst_5:

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

   775                     break;

   776                 case opc_ldc: {

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

   778                     String v = encodeConstant(indx);

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

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

   781                     break;

   782                 }

   783                 case opc_ldc_w:

   784                 case opc_ldc2_w: {

   785                     int indx = readUShortArg(byteCodes, i);

   786                     i += 2;

   787                     String v = encodeConstant(indx);

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

   789                     if (type == VarType.LONG) {

   790                         final Long lv = new Long(v);

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

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

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

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

   795                     } else {

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

   797                     }

   798                     break;

   799                 }

   800                 case opc_lcmp:

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

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

   803                     break;

   804                 case opc_fcmpl:

   805                 case opc_fcmpg:

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

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

   808                     break;

   809                 case opc_dcmpl:

   810                 case opc_dcmpg:

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

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

   813                     break;

   814                 case opc_if_acmpeq:

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

   816                                    "===", topMostLabel);

   817                     break;

   818                 case opc_if_acmpne:

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

   820                                    "!==", topMostLabel);

   821                     break;

   822                 case opc_if_icmpeq:

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

   824                                    "==", topMostLabel);

   825                     break;

   826                 case opc_ifeq: {

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

   828                     emitIf(out, "if (@1 == 0) ",

   829                          smapper.popI(), i, indx, topMostLabel);

   830                     i += 2;

   831                     break;

   832                 }

   833                 case opc_ifne: {

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

   835                     emitIf(out, "if (@1 != 0) ",

   836                          smapper.popI(), i, indx, topMostLabel);

   837                     i += 2;

   838                     break;

   839                 }

   840                 case opc_iflt: {

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

   842                     emitIf(out, "if (@1 < 0) ",

   843                          smapper.popI(), i, indx, topMostLabel);

   844                     i += 2;

   845                     break;

   846                 }

   847                 case opc_ifle: {

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

   849                     emitIf(out, "if (@1 <= 0) ",

   850                          smapper.popI(), i, indx, topMostLabel);

   851                     i += 2;

   852                     break;

   853                 }

   854                 case opc_ifgt: {

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

   856                     emitIf(out, "if (@1 > 0) ",

   857                          smapper.popI(), i, indx, topMostLabel);

   858                     i += 2;

   859                     break;

   860                 }

   861                 case opc_ifge: {

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

   863                     emitIf(out, "if (@1 >= 0) ",

   864                          smapper.popI(), i, indx, topMostLabel);

   865                     i += 2;

   866                     break;

   867                 }

   868                 case opc_ifnonnull: {

   869                     int indx = i + readShortArg(byteCodes, i);

   870                     emitIf(out, "if (@1 !== null) ",

   871                          smapper.popA(), i, indx, topMostLabel);

   872                     i += 2;

   873                     break;

   874                 }

   875                 case opc_ifnull: {

   876                     int indx = i + readShortArg(byteCodes, i);

   877                     emitIf(out, "if (@1 === null) ",

   878                          smapper.popA(), i, indx, topMostLabel);

   879                     i += 2;

   880                     break;

   881                 }

   882                 case opc_if_icmpne:

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

   884                                    "!=", topMostLabel);

   885                     break;

   886                 case opc_if_icmplt:

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

   888                                    "<", topMostLabel);

   889                     break;

   890                 case opc_if_icmple:

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

   892                                    "<=", topMostLabel);

   893                     break;

   894                 case opc_if_icmpgt:

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

   896                                    ">", topMostLabel);

   897                     break;

   898                 case opc_if_icmpge:

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

   900                                    ">=", topMostLabel);

   901                     break;

   902                 case opc_goto: {

   903                     int indx = i + readShortArg(byteCodes, i);

   904                     goTo(out, i, indx, topMostLabel);

   905                     i += 2;

   906                     break;

   907                 }

   908                 case opc_lookupswitch: {

   909                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

   910                     break;

   911                 }

   912                 case opc_tableswitch: {

   913                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

   914                     break;

   915                 }

   916                 case opc_invokeinterface: {

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

   918                     break;

   919                 }

   920                 case opc_invokevirtual:

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

   922                     break;

   923                 case opc_invokespecial:

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

   925                     break;

   926                 case opc_invokestatic:

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

   928                     break;

   929                 case opc_new: {

   930                     int indx = readUShortArg(byteCodes, i);

   931                     String ci = jc.getClassName(indx);

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

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

   934                     addReference(ci);

   935                     i += 2;

   936                     break;

   937                 }

   938                 case opc_newarray:

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

   940                     generateNewArray(atype, smapper);

   941                     break;

   942                 case opc_anewarray: {

   943                     int type = readUShortArg(byteCodes, i);

   944                     i += 2;

   945                     generateANewArray(type, smapper);

   946                     break;

   947                 }

   948                 case opc_multianewarray: {

   949                     int type = readUShortArg(byteCodes, i);

   950                     i += 2;

   951                     i = generateMultiANewArray(type, byteCodes, i, smapper);

   952                     break;

   953                 }

   954                 case opc_arraylength:

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

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

   957                     break;

   958                 case opc_lastore:

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

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

   961                     break;

   962                 case opc_fastore:

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

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

   965                     break;

   966                 case opc_dastore:

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

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

   969                     break;

   970                 case opc_aastore:

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

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

   973                     break;

   974                 case opc_iastore:

   975                 case opc_bastore:

   976                 case opc_castore:

   977                 case opc_sastore:

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

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

   980                     break;

   981                 case opc_laload:

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

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

   984                     break;

   985                 case opc_faload:

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

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

   988                     break;

   989                 case opc_daload:

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

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

   992                     break;

   993                 case opc_aaload:

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

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

   996                     break;

   997                 case opc_iaload:

   998                 case opc_baload:

   999                 case opc_caload:

  1000                 case opc_saload:

  1001                     emit(out, "var @3 = @2.at(@1);",

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

  1003                     break;

  1004                 case opc_pop:

  1005                 case opc_pop2:

  1006                     smapper.pop(1);

  1007                     debug("/* pop */");

  1008                     break;

  1009                 case opc_dup: {

  1010                     final Variable v = smapper.get(0);

  1011                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1012                     break;

  1013                 }

  1014                 case opc_dup2: {

  1015                     final Variable vi1 = smapper.get(0);

  1017                     if (vi1.isCategory2()) {

  1018                         emit(out, "var @1 = @2;",

  1019                              smapper.pushT(vi1.getType()), vi1);

  1020                     } else {

  1021                         final Variable vi2 = smapper.get(1);

  1022                         emit(out, "var @1 = @2, @3 = @4;",

  1023                              smapper.pushT(vi2.getType()), vi2,

  1024                              smapper.pushT(vi1.getType()), vi1);

  1025                     }

  1026                     break;

  1027                 }

  1028                 case opc_dup_x1: {

  1029                     final Variable vi1 = smapper.pop();

  1030                     final Variable vi2 = smapper.pop();

  1031                     final Variable vo3 = smapper.pushT(vi1.getType());

  1032                     final Variable vo2 = smapper.pushT(vi2.getType());

  1033                     final Variable vo1 = smapper.pushT(vi1.getType());

  1035                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1036                          vo1, vi1, vo2, vi2, vo3, vo1);

  1037                     break;

  1038                 }

  1039                 case opc_dup2_x1: {

  1040                     final Variable vi1 = smapper.pop();

  1041                     final Variable vi2 = smapper.pop();

  1043                     if (vi1.isCategory2()) {

  1044                         final Variable vo3 = smapper.pushT(vi1.getType());

  1045                         final Variable vo2 = smapper.pushT(vi2.getType());

  1046                         final Variable vo1 = smapper.pushT(vi1.getType());

  1048                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1049                              vo1, vi1, vo2, vi2, vo3, vo1);

  1050                     } else {

  1051                         final Variable vi3 = smapper.pop();

  1052                         final Variable vo5 = smapper.pushT(vi2.getType());

  1053                         final Variable vo4 = smapper.pushT(vi1.getType());

  1054                         final Variable vo3 = smapper.pushT(vi3.getType());

  1055                         final Variable vo2 = smapper.pushT(vi2.getType());

  1056                         final Variable vo1 = smapper.pushT(vi1.getType());

  1058                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1059                              vo1, vi1, vo2, vi2, vo3, vi3);

  1060                         emit(out, " @1 = @2, @3 = @4;",

  1061                              vo4, vo1, vo5, vo2);

  1062                     }

  1063                     break;

  1064                 }

  1065                 case opc_dup_x2: {

  1066                     final Variable vi1 = smapper.pop();

  1067                     final Variable vi2 = smapper.pop();

  1069                     if (vi2.isCategory2()) {

  1070                         final Variable vo3 = smapper.pushT(vi1.getType());

  1071                         final Variable vo2 = smapper.pushT(vi2.getType());

  1072                         final Variable vo1 = smapper.pushT(vi1.getType());

  1074                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1075                              vo1, vi1, vo2, vi2, vo3, vo1);

  1076                     } else {

  1077                         final Variable vi3 = smapper.pop();

  1078                         final Variable vo4 = smapper.pushT(vi1.getType());

  1079                         final Variable vo3 = smapper.pushT(vi3.getType());

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

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

  1083                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1084                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1085                     }

  1086                     break;

  1087                 }

  1088                 case opc_dup2_x2: {

  1089                     final Variable vi1 = smapper.pop();

  1090                     final Variable vi2 = smapper.pop();

  1092                     if (vi1.isCategory2()) {

  1093                         if (vi2.isCategory2()) {

  1094                             final Variable vo3 = smapper.pushT(vi1.getType());

  1095                             final Variable vo2 = smapper.pushT(vi2.getType());

  1096                             final Variable vo1 = smapper.pushT(vi1.getType());

  1098                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1099                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1100                         } else {

  1101                             final Variable vi3 = smapper.pop();

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

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

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

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

  1107                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1108                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1109                         }

  1110                     } else {

  1111                         final Variable vi3 = smapper.pop();

  1113                         if (vi3.isCategory2()) {

  1114                             final Variable vo5 = smapper.pushT(vi2.getType());

  1115                             final Variable vo4 = smapper.pushT(vi1.getType());

  1116                             final Variable vo3 = smapper.pushT(vi3.getType());

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

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

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

  1121                                  vo1, vi1, vo2, vi2, vo3, vi3);

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

  1123                                  vo4, vo1, vo5, vo2);

  1124                         } else {

  1125                             final Variable vi4 = smapper.pop();

  1126                             final Variable vo6 = smapper.pushT(vi2.getType());

  1127                             final Variable vo5 = smapper.pushT(vi1.getType());

  1128                             final Variable vo4 = smapper.pushT(vi4.getType());

  1129                             final Variable vo3 = smapper.pushT(vi3.getType());

  1130                             final Variable vo2 = smapper.pushT(vi2.getType());

  1131                             final Variable vo1 = smapper.pushT(vi1.getType());

  1133                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1134                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1135                             emit(out, " @1 = @2, @3 = @4;",

  1136                                  vo5, vo1, vo6, vo2);

  1137                         }

  1138                     }

  1139                     break;

  1140                 }

  1141                 case opc_swap: {

  1142                     final Variable vi1 = smapper.get(0);

  1143                     final Variable vi2 = smapper.get(1);

  1145                     if (vi1.getType() == vi2.getType()) {

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

  1148                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1149                              tmp, vi1, vi2);

  1150                         smapper.pop(1);

  1151                     } else {

  1152                         smapper.pop(2);

  1153                         smapper.pushT(vi1.getType());

  1154                         smapper.pushT(vi2.getType());

  1155                     }

  1156                     break;

  1157                 }

  1158                 case opc_bipush:

  1159                     emit(out, "var @1 = @2;",

  1160                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1161                     break;

  1162                 case opc_sipush:

  1163                     emit(out, "var @1 = @2;",

  1164                          smapper.pushI(),

  1165                          Integer.toString(readShortArg(byteCodes, i)));

  1166                     i += 2;

  1167                     break;

  1168                 case opc_getfield: {

  1169                     int indx = readUShortArg(byteCodes, i);

  1170                     String[] fi = jc.getFieldInfoName(indx);

  1171                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1172                     final String mangleClass = mangleSig(fi[0]);

  1173                     final String mangleClassAccess = accessClass(mangleClass);

  1174                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1175                          smapper.popA(),

  1176                          smapper.pushT(type), fi[1], mangleClassAccess

  1177                     );

  1178                     i += 2;

  1179                     break;

  1180                 }

  1181                 case opc_putfield: {

  1182                     int indx = readUShortArg(byteCodes, i);

  1183                     String[] fi = jc.getFieldInfoName(indx);

  1184                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1185                     final String mangleClass = mangleSig(fi[0]);

  1186                     final String mangleClassAccess = accessClass(mangleClass);

  1187                     emit(out, "@4(false)._@3.call(@2, @1);",

  1188                          smapper.popT(type),

  1189                          smapper.popA(), fi[1],

  1190                          mangleClassAccess

  1191                     );

  1192                     i += 2;

  1193                     break;

  1194                 }

  1195                 case opc_getstatic: {

  1196                     int indx = readUShortArg(byteCodes, i);

  1197                     String[] fi = jc.getFieldInfoName(indx);

  1198                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1199                     emit(out, "var @1 = @2(false)._@3();",

  1200                          smapper.pushT(type),

  1201                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1202                     i += 2;

  1203                     addReference(fi[0]);

  1204                     break;

  1205                 }

  1206                 case opc_putstatic: {

  1207                     int indx = readUShortArg(byteCodes, i);

  1208                     String[] fi = jc.getFieldInfoName(indx);

  1209                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1210                     emit(out, "@1(false)._@2(@3);",

  1211                          accessClass(fi[0].replace('/', '_')), fi[1],

  1212                          smapper.popT(type));

  1213                     i += 2;

  1214                     addReference(fi[0]);

  1215                     break;

  1216                 }

  1217                 case opc_checkcast: {

  1218                     int indx = readUShortArg(byteCodes, i);

  1219                     generateCheckcast(indx, smapper);

  1220                     i += 2;

  1221                     break;

  1222                 }

  1223                 case opc_instanceof: {

  1224                     int indx = readUShortArg(byteCodes, i);

  1225                     generateInstanceOf(indx, smapper);

  1226                     i += 2;

  1227                     break;

  1228                 }

  1229                 case opc_athrow: {

  1230                     final Variable v = smapper.popA();

  1231                     smapper.clear();

  1233                     emit(out, "{ var @1 = @2; throw @2; }",

  1234                          smapper.pushA(), v);

  1235                     break;

  1236                 }

  1238                 case opc_monitorenter: {

  1239                     out.append("/* monitor enter */");

  1240                     smapper.popA();

  1241                     break;

  1242                 }

  1244                 case opc_monitorexit: {

  1245                     out.append("/* monitor exit */");

  1246                     smapper.popA();

  1247                     break;

  1248                 }

  1250                 case opc_wide:

  1251                     wide = true;

  1252                     break;

  1254                 default: {

  1255                     wide = false;

  1256                     emit(out, "throw 'unknown bytecode @1';",

  1257                          Integer.toString(c));

  1258                 }

  1259             }

  1260             if (debug(" //")) {

  1261                 generateByteCodeComment(prev, i, byteCodes);

  1262             }

  1263             out.append("\n");

  1264         }

  1265         if (previousTrap != null) {

  1266             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1267         }

  1268         out.append("\n    }\n");

  1269         while (openBraces-- > 0) {

  1270             out.append('}');

  1271         }

  1272         out.append("\n};");

  1273     }

  1275     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1276         int indx = i + readShortArg(byteCodes, i);

  1277         out.append("if (").append(v1)

  1278            .append(' ').append(test).append(' ')

  1279            .append(v2).append(") ");

  1280         goTo(out, i, indx, topMostLabel);

  1281         return i + 2;

  1282     }

  1284     private int readInt4(byte[] byteCodes, int offset) {

  1285         final int d = byteCodes[offset + 0] << 24;

  1286         final int c = byteCodes[offset + 1] << 16;

  1287         final int b = byteCodes[offset + 2] << 8;

  1288         final int a = byteCodes[offset + 3];

  1289         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1290     }

  1291     private static int readUByte(byte[] byteCodes, int offset) {

  1292         return byteCodes[offset] & 0xff;

  1293     }

  1295     private static int readUShort(byte[] byteCodes, int offset) {

  1296         return ((byteCodes[offset] & 0xff) << 8)

  1297                     | (byteCodes[offset + 1] & 0xff);

  1298     }

  1299     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1300         return readUShort(byteCodes, offsetInstruction + 1);

  1301     }

  1303     private static int readShort(byte[] byteCodes, int offset) {

  1304         int signed = byteCodes[offset];

  1305         byte b0 = (byte)signed;

  1306         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1307     }

  1308     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1309         return readShort(byteCodes, offsetInstruction + 1);

  1310     }

  1312     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1313         int i = 0;

  1314         Boolean count = null;

  1315         boolean array = false;

  1316         sig.append("__");

  1317         int firstPos = sig.length();

  1318         while (i < descriptor.length()) {

  1319             char ch = descriptor.charAt(i++);

  1320             switch (ch) {

  1321                 case '(':

  1322                     count = true;

  1323                     continue;

  1324                 case ')':

  1325                     count = false;

  1326                     continue;

  1327                 case 'B':

  1328                 case 'C':

  1329                 case 'D':

  1330                 case 'F':

  1331                 case 'I':

  1332                 case 'J':

  1333                 case 'S':

  1334                 case 'Z':

  1335                     if (count) {

  1336                         if (array) {

  1337                             sig.append("_3");

  1338                         }

  1339                         sig.append(ch);

  1340                         if (ch == 'J' || ch == 'D') {

  1341                             cnt.append('1');

  1342                         } else {

  1343                             cnt.append('0');

  1344                         }

  1345                     } else {

  1346                         sig.insert(firstPos, ch);

  1347                         if (array) {

  1348                             returnType[0] = '[';

  1349                             sig.insert(firstPos, "_3");

  1350                         } else {

  1351                             returnType[0] = ch;

  1352                         }

  1353                     }

  1354                     array = false;

  1355                     continue;

  1356                 case 'V':

  1357                     assert !count;

  1358                     returnType[0] = 'V';

  1359                     sig.insert(firstPos, 'V');

  1360                     continue;

  1361                 case 'L':

  1362                     int next = descriptor.indexOf(';', i);

  1363                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1364                     if (count) {

  1365                         if (array) {

  1366                             sig.append("_3");

  1367                         }

  1368                         sig.append(realSig);

  1369                         cnt.append('0');

  1370                     } else {

  1371                         sig.insert(firstPos, realSig);

  1372                         if (array) {

  1373                             sig.insert(firstPos, "_3");

  1374                         }

  1375                         returnType[0] = 'L';

  1376                     }

  1377                     i = next + 1;

  1378                     array = false;

  1379                     continue;

  1380                 case '[':

  1381                     array = true;

  1382                     continue;

  1383                 default:

  1384                     throw new IllegalStateException("Invalid char: " + ch);

  1385             }

  1386         }

  1387     }

  1389     static String mangleSig(String sig) {

  1390         return mangleSig(sig, 0, sig.length());

  1391     }

  1393     private static String mangleSig(String txt, int first, int last) {

  1394         StringBuilder sb = new StringBuilder();

  1395         for (int i = first; i < last; i++) {

  1396             final char ch = txt.charAt(i);

  1397             switch (ch) {

  1398                 case '/': sb.append('_'); break;

  1399                 case '_': sb.append("_1"); break;

  1400                 case ';': sb.append("_2"); break;

  1401                 case '[': sb.append("_3"); break;

  1402                 default: sb.append(ch); break;

  1403             }

  1404         }

  1405         return sb.toString();

  1406     }

  1408     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1409         StringBuilder name = new StringBuilder();

  1410         if ("<init>".equals(m.getName())) { // NOI18N

  1411             name.append("cons"); // NOI18N

  1412         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1413             name.append("class"); // NOI18N

  1414         } else {

  1415             name.append(m.getName());

  1416         }

  1418         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1419         return name.toString();

  1420     }

  1422     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1423         StringBuilder name = new StringBuilder();

  1424         String descr = mi[2];//mi.getDescriptor();

  1425         String nm= mi[1];

  1426         if ("<init>".equals(nm)) { // NOI18N

  1427             name.append("cons"); // NOI18N

  1428         } else {

  1429             name.append(nm);

  1430         }

  1431         countArgs(descr, returnType, name, cnt);

  1432         return name.toString();

  1433     }

  1435     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1436     throws IOException {

  1437         int methodIndex = readUShortArg(byteCodes, i);

  1438         String[] mi = jc.getFieldInfoName(methodIndex);

  1439         char[] returnType = { 'V' };

  1440         StringBuilder cnt = new StringBuilder();

  1441         String mn = findMethodName(mi, cnt, returnType);

  1443         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1444         final Variable[] vars = new Variable[numArguments];

  1446         for (int j = numArguments - 1; j >= 0; --j) {

  1447             vars[j] = mapper.pop();

  1448         }

  1450         if (returnType[0] != 'V') {

  1451             out.append("var ")

  1452                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1453                .append(" = ");

  1454         }

  1456         final String in = mi[0];

  1457         out.append(accessClass(in.replace('/', '_')));

  1458         out.append("(false).");

  1459         if (mn.startsWith("cons_")) {

  1460             out.append("constructor.");

  1461         }

  1462         out.append(mn);

  1463         if (isStatic) {

  1464             out.append('(');

  1465         } else {

  1466             out.append(".call(");

  1467         }

  1468         if (numArguments > 0) {

  1469             out.append(vars[0]);

  1470             for (int j = 1; j < numArguments; ++j) {

  1471                 out.append(", ");

  1472                 out.append(vars[j]);

  1473             }

  1474         }

  1475         out.append(");");

  1476         i += 2;

  1477         addReference(in);

  1478         return i;

  1479     }

  1480     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1481     throws IOException {

  1482         int methodIndex = readUShortArg(byteCodes, i);

  1483         String[] mi = jc.getFieldInfoName(methodIndex);

  1484         char[] returnType = { 'V' };

  1485         StringBuilder cnt = new StringBuilder();

  1486         String mn = findMethodName(mi, cnt, returnType);

  1488         final int numArguments = cnt.length() + 1;

  1489         final Variable[] vars = new Variable[numArguments];

  1491         for (int j = numArguments - 1; j >= 0; --j) {

  1492             vars[j] = mapper.pop();

  1493         }

  1495         if (returnType[0] != 'V') {

  1496             out.append("var ")

  1497                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1498                .append(" = ");

  1499         }

  1501         out.append(vars[0]).append('.');

  1502         out.append(mn);

  1503         out.append('(');

  1504         String sep = "";

  1505         for (int j = 1; j < numArguments; ++j) {

  1506             out.append(sep);

  1507             out.append(vars[j]);

  1508             sep = ", ";

  1509         }

  1510         out.append(");");

  1511         i += 2;

  1512         return i;

  1513     }

  1515     private void addReference(String cn) throws IOException {

  1516         if (requireReference(cn)) {

  1517             debug(" /* needs " + cn + " */");

  1518         }

  1519     }

  1521     private void outType(String d, StringBuilder out) {

  1522         int arr = 0;

  1523         while (d.charAt(0) == '[') {

  1524             out.append('A');

  1525             d = d.substring(1);

  1526         }

  1527         if (d.charAt(0) == 'L') {

  1528             assert d.charAt(d.length() - 1) == ';';

  1529             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1530         } else {

  1531             out.append(d);

  1532         }

  1533     }

  1535     private String encodeConstant(int entryIndex) throws IOException {

  1536         String[] classRef = { null };

  1537         String s = jc.stringValue(entryIndex, classRef);

  1538         if (classRef[0] != null) {

  1539             if (classRef[0].startsWith("[")) {

  1540                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1541             } else {

  1542                 addReference(classRef[0]);

  1543                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1544             }

  1545         }

  1546         return s;

  1547     }

  1549     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1550         byte[] arr = m.findAnnotationData(true);

  1551         if (arr == null) {

  1552             return null;

  1553         }

  1554         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1555         class P extends AnnotationParser {

  1556             public P() {

  1557                 super(false, true);

  1558             }

  1560             int cnt;

  1561             String[] args = new String[30];

  1562             String body;

  1564             @Override

  1565             protected void visitAttr(String type, String attr, String at, String value) {

  1566                 if (type.equals(jvmType)) {

  1567                     if ("body".equals(attr)) {

  1568                         body = value;

  1569                     } else if ("args".equals(attr)) {

  1570                         args[cnt++] = value;

  1571                     } else {

  1572                         throw new IllegalArgumentException(attr);

  1573                     }

  1574                 }

  1575             }

  1576         }

  1577         P p = new P();

  1578         p.parse(arr, jc);

  1579         if (p.body == null) {

  1580             return null;

  1581         }

  1582         StringBuilder cnt = new StringBuilder();

  1583         final String mn = findMethodName(m, cnt);

  1584         out.append(prefix).append(mn);

  1585         out.append(" = function(");

  1586         String space = "";

  1587         int index = 0;

  1588         for (int i = 0; i < cnt.length(); i++) {

  1589             out.append(space);

  1590             space = outputArg(out, p.args, index);

  1591             index++;

  1592         }

  1593         out.append(") {").append("\n");

  1594         out.append(p.body);

  1595         out.append("\n}\n");

  1596         return mn;

  1597     }

  1598     private static String className(ClassData jc) {

  1599         //return jc.getName().getInternalName().replace('/', '_');

  1600         return jc.getClassName().replace('/', '_');

  1601     }

  1603     private static String[] findAnnotation(

  1604         byte[] arr, ClassData cd, final String className,

  1605         final String... attrNames

  1606     ) throws IOException {

  1607         if (arr == null) {

  1608             return null;

  1609         }

  1610         final String[] values = new String[attrNames.length];

  1611         final boolean[] found = { false };

  1612         final String jvmType = "L" + className.replace('.', '/') + ";";

  1613         AnnotationParser ap = new AnnotationParser(false, true) {

  1614             @Override

  1615             protected void visitAttr(String type, String attr, String at, String value) {

  1616                 if (type.equals(jvmType)) {

  1617                     found[0] = true;

  1618                     for (int i = 0; i < attrNames.length; i++) {

  1619                         if (attrNames[i].equals(attr)) {

  1620                             values[i] = value;

  1621                         }

  1622                     }

  1623                 }

  1624             }

  1626         };

  1627         ap.parse(arr, cd);

  1628         return found[0] ? values : null;

  1629     }

  1631     private CharSequence initField(FieldData v) {

  1632         final String is = v.getInternalSig();

  1633         if (is.length() == 1) {

  1634             switch (is.charAt(0)) {

  1635                 case 'S':

  1636                 case 'J':

  1637                 case 'B':

  1638                 case 'Z':

  1639                 case 'C':

  1640                 case 'I': return " = 0;";

  1641                 case 'F':

  1642                 case 'D': return " = 0.0;";

  1643                 default:

  1644                     throw new IllegalStateException(is);

  1645             }

  1646         }

  1647         return " = null;";

  1648     }

  1650     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1651         AnnotationParser ap = new AnnotationParser(true, false) {

  1652             int[] cnt = new int[32];

  1653             int depth;

  1655             @Override

  1656             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1657                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1658                 requireReference(slashType);

  1660                 if (cnt[depth]++ > 0) {

  1661                     out.append(",");

  1662                 }

  1663                 if (top) {

  1664                     out.append('"').append(attrType).append("\" : ");

  1665                 }

  1666                 out.append("{\n");

  1667                 cnt[++depth] = 0;

  1668             }

  1670             @Override

  1671             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1672                 out.append("\n}\n");

  1673                 depth--;

  1674             }

  1676             @Override

  1677             protected void visitValueStart(String attrName, char type) throws IOException {

  1678                 if (cnt[depth]++ > 0) {

  1679                     out.append(",\n");

  1680                 }

  1681                 cnt[++depth] = 0;

  1682                 if (attrName != null) {

  1683                     out.append(attrName).append(" : ");

  1684                 }

  1685                 if (type == '[') {

  1686                     out.append("[");

  1687                 }

  1688             }

  1690             @Override

  1691             protected void visitValueEnd(String attrName, char type) throws IOException {

  1692                 if (type == '[') {

  1693                     out.append("]");

  1694                 }

  1695                 depth--;

  1696             }

  1698             @Override

  1699             protected void visitAttr(String type, String attr, String attrType, String value)

  1700             throws IOException {

  1701                 if (attr == null && value == null) {

  1702                     return;

  1703                 }

  1704                 out.append(value);

  1705             }

  1707             @Override

  1708             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1709             throws IOException {

  1710                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1711                 requireReference(slashType);

  1713                 out.append(accessClass(slashType.replace('/', '_')))

  1714                    .append("(false).constructor.").append(value);

  1715             }

  1716         };

  1717         ap.parse(data, cd);

  1718     }

  1720     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1721         final String name = args[indx];

  1722         if (name == null) {

  1723             return "";

  1724         }

  1725         if (name.contains(",")) {

  1726             throw new IOException("Wrong parameter with ',': " + name);

  1727         }

  1728         out.append(name);

  1729         return ",";

  1730     }

  1732     private static void emit(final Appendable out,

  1733                              final String format,

  1734                              final CharSequence... params) throws IOException {

  1735         final int length = format.length();

  1737         int processed = 0;

  1738         int paramOffset = format.indexOf('@');

  1739         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1740             final char paramChar = format.charAt(paramOffset + 1);

  1741             if ((paramChar >= '1') && (paramChar <= '9')) {

  1742                 final int paramIndex = paramChar - '0' - 1;

  1744                 out.append(format, processed, paramOffset);

  1745                 out.append(params[paramIndex]);

  1747                 ++paramOffset;

  1748                 processed = paramOffset + 1;

  1749             }

  1751             paramOffset = format.indexOf('@', paramOffset + 1);

  1752         }

  1754         out.append(format, processed, length);

  1755     }

  1757     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1758         out.append("} catch (e) {\n");

  1759         int finallyPC = -1;

  1760         for (TrapData e : traps) {

  1761             if (e == null) {

  1762                 break;

  1763             }

  1764             if (e.catch_cpx != 0) { //not finally

  1765                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1766                 addReference(classInternalName);

  1767                 if ("java/lang/Throwable".equals(classInternalName)) {

  1768                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1769                     out.append("  var stA0 = e;");

  1770                     out.append("} else {");

  1771                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1772                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1773                     out.append("}");

  1774                     goTo(out, current, e.handler_pc, topMostLabel);

  1775                 } else {

  1776                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1777                     out.append("var stA0 = e;");

  1778                     goTo(out, current, e.handler_pc, topMostLabel);

  1779                     out.append("}\n");

  1780                 }

  1781             } else {

  1782                 finallyPC = e.handler_pc;

  1783             }

  1784         }

  1785         if (finallyPC == -1) {

  1786             out.append("throw e;");

  1787         } else {

  1788             out.append("var stA0 = e;");

  1789             goTo(out, current, finallyPC, topMostLabel);

  1790         }

  1791         out.append("\n}");

  1792     }

  1794     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1795         if (to < current) {

  1796             if (canBack < to) {

  1797                 out.append("{ gt = 0; continue X_" + to + "; }");

  1798             } else {

  1799                 out.append("{ gt = " + to + "; continue X_0; }");

  1800             }

  1801         } else {

  1802             out.append("{ gt = " + to + "; break IF; }");

  1803         }

  1804     }

  1806     private static void emitIf(

  1807         Appendable out, String pattern, Variable param,

  1808         int current, int to, int canBack

  1809     ) throws IOException {

  1810         emit(out, pattern, param);

  1811         goTo(out, current, to, canBack);

  1812     }

  1814     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1815         String jvmType;

  1816         switch (atype) {

  1817             case 4: jvmType = "[Z"; break;

  1818             case 5: jvmType = "[C"; break;

  1819             case 6: jvmType = "[F"; break;

  1820             case 7: jvmType = "[D"; break;

  1821             case 8: jvmType = "[B"; break;

  1822             case 9: jvmType = "[S"; break;

  1823             case 10: jvmType = "[I"; break;

  1824             case 11: jvmType = "[J"; break;

  1825             default: throw new IllegalStateException("Array type: " + atype);

  1826         }

  1827         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  1828              smapper.popI(), smapper.pushA(), jvmType);

  1829     }

  1831     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  1832         String typeName = jc.getClassName(type);

  1833         if (typeName.startsWith("[")) {

  1834             typeName = "[" + typeName;

  1835         } else {

  1836             typeName = "[L" + typeName + ";";

  1837         }

  1838         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  1839              smapper.popI(), smapper.pushA(), typeName);

  1840     }

  1842     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  1843         String typeName = jc.getClassName(type);

  1844         int dim = readUByte(byteCodes, ++i);

  1845         StringBuilder dims = new StringBuilder();

  1846         dims.append('[');

  1847         for (int d = 0; d < dim; d++) {

  1848             if (d != 0) {

  1849                 dims.insert(1, ",");

  1850             }

  1851             dims.insert(1, smapper.popI());

  1852         }

  1853         dims.append(']');

  1854         emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  1855              dims.toString(), smapper.pushA(), typeName);

  1856         return i;

  1857     }

  1859     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1860         int table = i / 4 * 4 + 4;

  1861         int dflt = i + readInt4(byteCodes, table);

  1862         table += 4;

  1863         int low = readInt4(byteCodes, table);

  1864         table += 4;

  1865         int high = readInt4(byteCodes, table);

  1866         table += 4;

  1867         out.append("switch (").append(smapper.popI()).append(") {\n");

  1868         while (low <= high) {

  1869             int offset = i + readInt4(byteCodes, table);

  1870             table += 4;

  1871             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  1872             low++;

  1873         }

  1874         out.append("  default: ");

  1875         goTo(out, i, dflt, topMostLabel);

  1876         out.append("\n}");

  1877         i = table - 1;

  1878         return i;

  1879     }

  1881     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1882         int table = i / 4 * 4 + 4;

  1883         int dflt = i + readInt4(byteCodes, table);

  1884         table += 4;

  1885         int n = readInt4(byteCodes, table);

  1886         table += 4;

  1887         out.append("switch (").append(smapper.popI()).append(") {\n");

  1888         while (n-- > 0) {

  1889             int cnstnt = readInt4(byteCodes, table);

  1890             table += 4;

  1891             int offset = i + readInt4(byteCodes, table);

  1892             table += 4;

  1893             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  1894         }

  1895         out.append("  default: ");

  1896         goTo(out, i, dflt, topMostLabel);

  1897         out.append("\n}");

  1898         i = table - 1;

  1899         return i;

  1900     }

  1902     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  1903         final String type = jc.getClassName(indx);

  1904         if (!type.startsWith("[")) {

  1905             emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  1906                  smapper.popA(), smapper.pushI(),

  1907                  type.replace('/', '_'));

  1908         } else {

  1909             emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1910                 smapper.popA(), smapper.pushI(),

  1911                 type

  1912             );

  1913         }

  1914     }

  1916     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  1917         final String type = jc.getClassName(indx);

  1918         if (!type.startsWith("[")) {

  1919             emit(out,

  1920                  "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1921                  smapper.getA(0), type.replace('/', '_'));

  1922         } else {

  1923             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);",

  1924                  smapper.getA(0), type

  1925             );

  1926         }

  1927     }

  1929     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  1930         for (int j = prev; j <= i; j++) {

  1931             out.append(" ");

  1932             final int cc = readUByte(byteCodes, j);

  1933             out.append(Integer.toString(cc));

  1934         }

  1935     }

  1936 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Wed, 20 Mar 2013 21:24:36 +0100
changeset 864	8ece59d31fcf
parent 843	140c739c607f
child 883	8c14a9f0c232
permissions	-rw-r--r--