hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@5c4202b95e3c

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

   287             int prev = i;

   288             stackMapIterator.advanceTo(i);

   289             boolean changeInCatch = trap.advanceTo(i);

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

   291                 if (previousTrap != null) {

   292                     generateCatch(previousTrap, i);

   293                     previousTrap = null;

   294                 }

   295             }

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

   297                 if (i != 0) {

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

   299                 }

   301                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   305                 openBraces++;

   306                 changeInCatch = true;

   307             } else {

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

   309             }

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

   311                 out.append("try {");

   312                 previousTrap = trap.current();

   313             }

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

   315             switch (c) {

   316                 case opc_aload_0:

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

   318                     break;

   319                 case opc_iload_0:

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

   321                     break;

   322                 case opc_lload_0:

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

   324                     break;

   325                 case opc_fload_0:

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

   327                     break;

   328                 case opc_dload_0:

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

   330                     break;

   331                 case opc_aload_1:

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

   333                     break;

   334                 case opc_iload_1:

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

   336                     break;

   337                 case opc_lload_1:

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

   339                     break;

   340                 case opc_fload_1:

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

   342                     break;

   343                 case opc_dload_1:

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

   345                     break;

   346                 case opc_aload_2:

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

   348                     break;

   349                 case opc_iload_2:

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

   351                     break;

   352                 case opc_lload_2:

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

   354                     break;

   355                 case opc_fload_2:

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

   357                     break;

   358                 case opc_dload_2:

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

   360                     break;

   361                 case opc_aload_3:

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

   363                     break;

   364                 case opc_iload_3:

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

   366                     break;

   367                 case opc_lload_3:

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

   369                     break;

   370                 case opc_fload_3:

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

   372                     break;

   373                 case opc_dload_3:

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

   375                     break;

   376                 case opc_iload: {

   377                     ++i;

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

   379                                           : readUByte(byteCodes, i);

   380                     wide = false;

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

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

   383                     break;

   384                 }

   385                 case opc_lload: {

   386                     ++i;

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

   388                                           : readUByte(byteCodes, i);

   389                     wide = false;

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

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

   392                     break;

   393                 }

   394                 case opc_fload: {

   395                     ++i;

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

   397                                           : readUByte(byteCodes, i);

   398                     wide = false;

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

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

   401                     break;

   402                 }

   403                 case opc_dload: {

   404                     ++i;

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

   406                                           : readUByte(byteCodes, i);

   407                     wide = false;

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

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

   410                     break;

   411                 }

   412                 case opc_aload: {

   413                     ++i;

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

   415                                           : readUByte(byteCodes, i);

   416                     wide = false;

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

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

   419                     break;

   420                 }

   421                 case opc_istore: {

   422                     ++i;

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

   424                                           : readUByte(byteCodes, i);

   425                     wide = false;

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

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

   428                     break;

   429                 }

   430                 case opc_lstore: {

   431                     ++i;

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

   433                                           : readUByte(byteCodes, i);

   434                     wide = false;

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

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

   437                     break;

   438                 }

   439                 case opc_fstore: {

   440                     ++i;

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

   442                                           : readUByte(byteCodes, i);

   443                     wide = false;

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

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

   446                     break;

   447                 }

   448                 case opc_dstore: {

   449                     ++i;

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

   451                                           : readUByte(byteCodes, i);

   452                     wide = false;

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

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

   455                     break;

   456                 }

   457                 case opc_astore: {

   458                     ++i;

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

   460                                           : readUByte(byteCodes, i);

   461                     wide = false;

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

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

   464                     break;

   465                 }

   466                 case opc_astore_0:

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

   468                     break;

   469                 case opc_istore_0:

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

   471                     break;

   472                 case opc_lstore_0:

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

   474                     break;

   475                 case opc_fstore_0:

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

   477                     break;

   478                 case opc_dstore_0:

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

   480                     break;

   481                 case opc_astore_1:

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

   483                     break;

   484                 case opc_istore_1:

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

   486                     break;

   487                 case opc_lstore_1:

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

   489                     break;

   490                 case opc_fstore_1:

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

   492                     break;

   493                 case opc_dstore_1:

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

   495                     break;

   496                 case opc_astore_2:

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

   498                     break;

   499                 case opc_istore_2:

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

   501                     break;

   502                 case opc_lstore_2:

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

   504                     break;

   505                 case opc_fstore_2:

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

   507                     break;

   508                 case opc_dstore_2:

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

   510                     break;

   511                 case opc_astore_3:

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

   513                     break;

   514                 case opc_istore_3:

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

   516                     break;

   517                 case opc_lstore_3:

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

   519                     break;

   520                 case opc_fstore_3:

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

   522                     break;

   523                 case opc_dstore_3:

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

   525                     break;

   526                 case opc_iadd:

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

   528                     break;

   529                 case opc_ladd:

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

   531                     break;

   532                 case opc_fadd:

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

   534                     break;

   535                 case opc_dadd:

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

   537                     break;

   538                 case opc_isub:

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

   540                     break;

   541                 case opc_lsub:

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

   543                     break;

   544                 case opc_fsub:

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

   546                     break;

   547                 case opc_dsub:

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

   549                     break;

   550                 case opc_imul:

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

   552                     break;

   553                 case opc_lmul:

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

   555                     break;

   556                 case opc_fmul:

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

   558                     break;

   559                 case opc_dmul:

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

   561                     break;

   562                 case opc_idiv:

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

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

   565                     break;

   566                 case opc_ldiv:

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

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

   569                     break;

   570                 case opc_fdiv:

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

   572                     break;

   573                 case opc_ddiv:

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

   575                     break;

   576                 case opc_irem:

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

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

   579                     break;

   580                 case opc_lrem:

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

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

   583                     break;

   584                 case opc_frem:

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

   586                     break;

   587                 case opc_drem:

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

   589                     break;

   590                 case opc_iand:

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

   592                     break;

   593                 case opc_land:

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

   595                     break;

   596                 case opc_ior:

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

   598                     break;

   599                 case opc_lor:

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

   601                     break;

   602                 case opc_ixor:

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

   604                     break;

   605                 case opc_lxor:

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

   607                     break;

   608                 case opc_ineg:

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

   610                     break;

   611                 case opc_lneg:

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

   613                     break;

   614                 case opc_fneg:

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

   616                     break;

   617                 case opc_dneg:

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

   619                     break;

   620                 case opc_ishl:

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

   622                     break;

   623                 case opc_lshl:

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

   625                     break;

   626                 case opc_ishr:

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

   628                     break;

   629                 case opc_lshr:

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

   631                     break;

   632                 case opc_iushr:

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

   634                     break;

   635                 case opc_lushr:

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

   637                     break;

   638                 case opc_iinc: {

   639                     ++i;

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

   641                                              : readUByte(byteCodes, i);

   642                     ++i;

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

   644                                             : byteCodes[i];

   645                     wide = false;

   646                     if (incrBy == 1) {

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

   648                     } else {

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

   650                              lmapper.getI(varIndx),

   651                              Integer.toString(incrBy));

   652                     }

   653                     break;

   654                 }

   655                 case opc_return:

   656                     emit(out, "return;");

   657                     break;

   658                 case opc_ireturn:

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

   660                     break;

   661                 case opc_lreturn:

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

   663                     break;

   664                 case opc_freturn:

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

   666                     break;

   667                 case opc_dreturn:

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

   669                     break;

   670                 case opc_areturn:

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

   672                     break;

   673                 case opc_i2l:

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

   675                     break;

   676                 case opc_i2f:

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

   678                     break;

   679                 case opc_i2d:

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

   681                     break;

   682                 case opc_l2i:

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

   684                     break;

   685                     // max int check?

   686                 case opc_l2f:

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

   688                     break;

   689                 case opc_l2d:

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

   691                     break;

   692                 case opc_f2d:

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

   694                     break;

   695                 case opc_d2f:

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

   697                     break;

   698                 case opc_f2i:

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

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

   701                     break;

   702                 case opc_f2l:

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

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

   705                     break;

   706                 case opc_d2i:

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

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

   709                     break;

   710                 case opc_d2l:

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

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

   713                     break;

   714                 case opc_i2b:

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

   716                     break;

   717                 case opc_i2c:

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

   719                     break;

   720                 case opc_i2s:

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

   722                     break;

   723                 case opc_aconst_null:

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

   725                     break;

   726                 case opc_iconst_m1:

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

   728                     break;

   729                 case opc_iconst_0:

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

   731                     break;

   732                 case opc_dconst_0:

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

   734                     break;

   735                 case opc_lconst_0:

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

   737                     break;

   738                 case opc_fconst_0:

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

   740                     break;

   741                 case opc_iconst_1:

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

   743                     break;

   744                 case opc_lconst_1:

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

   746                     break;

   747                 case opc_fconst_1:

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

   749                     break;

   750                 case opc_dconst_1:

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

   752                     break;

   753                 case opc_iconst_2:

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

   755                     break;

   756                 case opc_fconst_2:

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

   758                     break;

   759                 case opc_iconst_3:

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

   761                     break;

   762                 case opc_iconst_4:

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

   764                     break;

   765                 case opc_iconst_5:

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

   767                     break;

   768                 case opc_ldc: {

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

   770                     String v = encodeConstant(indx);

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

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

   773                     break;

   774                 }

   775                 case opc_ldc_w:

   776                 case opc_ldc2_w: {

   777                     int indx = readIntArg(byteCodes, i);

   778                     i += 2;

   779                     String v = encodeConstant(indx);

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

   781                     if (type == VarType.LONG) {

   782                         final Long lv = new Long(v);

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

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

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

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

   787                     } else {

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

   789                     }

   790                     break;

   791                 }

   792                 case opc_lcmp:

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

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

   795                     break;

   796                 case opc_fcmpl:

   797                 case opc_fcmpg:

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

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

   800                     break;

   801                 case opc_dcmpl:

   802                 case opc_dcmpg:

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

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

   805                     break;

   806                 case opc_if_acmpeq:

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

   808                                    "===");

   809                     break;

   810                 case opc_if_acmpne:

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

   812                                    "!==");

   813                     break;

   814                 case opc_if_icmpeq:

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

   816                                    "==");

   817                     break;

   818                 case opc_ifeq: {

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

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

   821                          smapper.popI(), i, indx);

   822                     i += 2;

   823                     break;

   824                 }

   825                 case opc_ifne: {

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

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

   828                          smapper.popI(), i, indx);

   829                     i += 2;

   830                     break;

   831                 }

   832                 case opc_iflt: {

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

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

   835                          smapper.popI(), i, indx);

   836                     i += 2;

   837                     break;

   838                 }

   839                 case opc_ifle: {

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

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

   842                          smapper.popI(), i, indx);

   843                     i += 2;

   844                     break;

   845                 }

   846                 case opc_ifgt: {

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

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

   849                          smapper.popI(), i, indx);

   850                     i += 2;

   851                     break;

   852                 }

   853                 case opc_ifge: {

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

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

   856                          smapper.popI(), i, indx);

   857                     i += 2;

   858                     break;

   859                 }

   860                 case opc_ifnonnull: {

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

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

   863                          smapper.popA(), i, indx);

   864                     i += 2;

   865                     break;

   866                 }

   867                 case opc_ifnull: {

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

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

   870                          smapper.popA(), i, indx);

   871                     i += 2;

   872                     break;

   873                 }

   874                 case opc_if_icmpne:

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

   876                                    "!=");

   877                     break;

   878                 case opc_if_icmplt:

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

   880                                    "<");

   881                     break;

   882                 case opc_if_icmple:

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

   884                                    "<=");

   885                     break;

   886                 case opc_if_icmpgt:

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

   888                                    ">");

   889                     break;

   890                 case opc_if_icmpge:

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

   892                                    ">=");

   893                     break;

   894                 case opc_goto: {

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

   896                     goTo(out, i, indx);

   897                     i += 2;

   898                     break;

   899                 }

   900                 case opc_lookupswitch: {

   901                     i = generateLookupSwitch(i, byteCodes, smapper);

   902                     break;

   903                 }

   904                 case opc_tableswitch: {

   905                     i = generateTableSwitch(i, byteCodes, smapper);

   906                     break;

   907                 }

   908                 case opc_invokeinterface: {

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

   910                     break;

   911                 }

   912                 case opc_invokevirtual:

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

   914                     break;

   915                 case opc_invokespecial:

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

   917                     break;

   918                 case opc_invokestatic:

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

   920                     break;

   921                 case opc_new: {

   922                     int indx = readIntArg(byteCodes, i);

   923                     String ci = jc.getClassName(indx);

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

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

   926                     addReference(ci);

   927                     i += 2;

   928                     break;

   929                 }

   930                 case opc_newarray:

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

   932                     generateNewArray(atype, smapper);

   933                     break;

   934                 case opc_anewarray: {

   935                     int type = readIntArg(byteCodes, i);

   936                     i += 2;

   937                     generateANewArray(type, smapper);

   938                     break;

   939                 }

   940                 case opc_multianewarray: {

   941                     int type = readIntArg(byteCodes, i);

   942                     i += 2;

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

   944                     break;

   945                 }

   946                 case opc_arraylength:

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

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

   949                     break;

   950                 case opc_lastore:

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

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

   953                     break;

   954                 case opc_fastore:

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

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

   957                     break;

   958                 case opc_dastore:

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

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

   961                     break;

   962                 case opc_aastore:

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

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

   965                     break;

   966                 case opc_iastore:

   967                 case opc_bastore:

   968                 case opc_castore:

   969                 case opc_sastore:

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

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

   972                     break;

   973                 case opc_laload:

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

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

   976                     break;

   977                 case opc_faload:

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

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

   980                     break;

   981                 case opc_daload:

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

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

   984                     break;

   985                 case opc_aaload:

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

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

   988                     break;

   989                 case opc_iaload:

   990                 case opc_baload:

   991                 case opc_caload:

   992                 case opc_saload:

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

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

   995                     break;

   996                 case opc_pop:

   997                 case opc_pop2:

   998                     smapper.pop(1);

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

  1000                     break;

  1001                 case opc_dup: {

  1002                     final Variable v = smapper.get(0);

  1003                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1004                     break;

  1005                 }

  1006                 case opc_dup2: {

  1007                     final Variable vi1 = smapper.get(0);

  1009                     if (vi1.isCategory2()) {

  1010                         emit(out, "var @1 = @2;",

  1011                              smapper.pushT(vi1.getType()), vi1);

  1012                     } else {

  1013                         final Variable vi2 = smapper.get(1);

  1014                         emit(out, "var @1 = @2, @3 = @4;",

  1015                              smapper.pushT(vi2.getType()), vi2,

  1016                              smapper.pushT(vi1.getType()), vi1);

  1017                     }

  1018                     break;

  1019                 }

  1020                 case opc_dup_x1: {

  1021                     final Variable vi1 = smapper.pop();

  1022                     final Variable vi2 = smapper.pop();

  1023                     final Variable vo3 = smapper.pushT(vi1.getType());

  1024                     final Variable vo2 = smapper.pushT(vi2.getType());

  1025                     final Variable vo1 = smapper.pushT(vi1.getType());

  1027                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1028                          vo1, vi1, vo2, vi2, vo3, vo1);

  1029                     break;

  1030                 }

  1031                 case opc_dup2_x1: {

  1032                     final Variable vi1 = smapper.pop();

  1033                     final Variable vi2 = smapper.pop();

  1035                     if (vi1.isCategory2()) {

  1036                         final Variable vo3 = smapper.pushT(vi1.getType());

  1037                         final Variable vo2 = smapper.pushT(vi2.getType());

  1038                         final Variable vo1 = smapper.pushT(vi1.getType());

  1040                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1041                              vo1, vi1, vo2, vi2, vo3, vo1);

  1042                     } else {

  1043                         final Variable vi3 = smapper.pop();

  1044                         final Variable vo5 = smapper.pushT(vi2.getType());

  1045                         final Variable vo4 = smapper.pushT(vi1.getType());

  1046                         final Variable vo3 = smapper.pushT(vi3.getType());

  1047                         final Variable vo2 = smapper.pushT(vi2.getType());

  1048                         final Variable vo1 = smapper.pushT(vi1.getType());

  1050                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1051                              vo1, vi1, vo2, vi2, vo3, vi3);

  1052                         emit(out, " @1 = @2, @3 = @4;",

  1053                              vo4, vo1, vo5, vo2);

  1054                     }

  1055                     break;

  1056                 }

  1057                 case opc_dup_x2: {

  1058                     final Variable vi1 = smapper.pop();

  1059                     final Variable vi2 = smapper.pop();

  1061                     if (vi2.isCategory2()) {

  1062                         final Variable vo3 = smapper.pushT(vi1.getType());

  1063                         final Variable vo2 = smapper.pushT(vi2.getType());

  1064                         final Variable vo1 = smapper.pushT(vi1.getType());

  1066                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1067                              vo1, vi1, vo2, vi2, vo3, vo1);

  1068                     } else {

  1069                         final Variable vi3 = smapper.pop();

  1070                         final Variable vo4 = smapper.pushT(vi1.getType());

  1071                         final Variable vo3 = smapper.pushT(vi3.getType());

  1072                         final Variable vo2 = smapper.pushT(vi2.getType());

  1073                         final Variable vo1 = smapper.pushT(vi1.getType());

  1075                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1076                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1077                     }

  1078                     break;

  1079                 }

  1080                 case opc_dup2_x2: {

  1081                     final Variable vi1 = smapper.pop();

  1082                     final Variable vi2 = smapper.pop();

  1084                     if (vi1.isCategory2()) {

  1085                         if (vi2.isCategory2()) {

  1086                             final Variable vo3 = smapper.pushT(vi1.getType());

  1087                             final Variable vo2 = smapper.pushT(vi2.getType());

  1088                             final Variable vo1 = smapper.pushT(vi1.getType());

  1090                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1091                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1092                         } else {

  1093                             final Variable vi3 = smapper.pop();

  1094                             final Variable vo4 = smapper.pushT(vi1.getType());

  1095                             final Variable vo3 = smapper.pushT(vi3.getType());

  1096                             final Variable vo2 = smapper.pushT(vi2.getType());

  1097                             final Variable vo1 = smapper.pushT(vi1.getType());

  1099                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1100                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1101                         }

  1102                     } else {

  1103                         final Variable vi3 = smapper.pop();

  1105                         if (vi3.isCategory2()) {

  1106                             final Variable vo5 = smapper.pushT(vi2.getType());

  1107                             final Variable vo4 = smapper.pushT(vi1.getType());

  1108                             final Variable vo3 = smapper.pushT(vi3.getType());

  1109                             final Variable vo2 = smapper.pushT(vi2.getType());

  1110                             final Variable vo1 = smapper.pushT(vi1.getType());

  1112                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1113                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1114                             emit(out, " @1 = @2, @3 = @4;",

  1115                                  vo4, vo1, vo5, vo2);

  1116                         } else {

  1117                             final Variable vi4 = smapper.pop();

  1118                             final Variable vo6 = smapper.pushT(vi2.getType());

  1119                             final Variable vo5 = smapper.pushT(vi1.getType());

  1120                             final Variable vo4 = smapper.pushT(vi4.getType());

  1121                             final Variable vo3 = smapper.pushT(vi3.getType());

  1122                             final Variable vo2 = smapper.pushT(vi2.getType());

  1123                             final Variable vo1 = smapper.pushT(vi1.getType());

  1125                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1126                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1127                             emit(out, " @1 = @2, @3 = @4;",

  1128                                  vo5, vo1, vo6, vo2);

  1129                         }

  1130                     }

  1131                     break;

  1132                 }

  1133                 case opc_swap: {

  1134                     final Variable vi1 = smapper.get(0);

  1135                     final Variable vi2 = smapper.get(1);

  1137                     if (vi1.getType() == vi2.getType()) {

  1138                         final Variable tmp = smapper.pushT(vi1.getType());

  1140                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1141                              tmp, vi1, vi2);

  1142                         smapper.pop(1);

  1143                     } else {

  1144                         smapper.pop(2);

  1145                         smapper.pushT(vi1.getType());

  1146                         smapper.pushT(vi2.getType());

  1147                     }

  1148                     break;

  1149                 }

  1150                 case opc_bipush:

  1151                     emit(out, "var @1 = @2;",

  1152                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1153                     break;

  1154                 case opc_sipush:

  1155                     emit(out, "var @1 = @2;",

  1156                          smapper.pushI(),

  1157                          Integer.toString(readIntArg(byteCodes, i)));

  1158                     i += 2;

  1159                     break;

  1160                 case opc_getfield: {

  1161                     int indx = readIntArg(byteCodes, i);

  1162                     String[] fi = jc.getFieldInfoName(indx);

  1163                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1164                     final String mangleClass = mangleSig(fi[0]);

  1165                     final String mangleClassAccess = accessClass(mangleClass);

  1166                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1167                          smapper.popA(),

  1168                          smapper.pushT(type), fi[1], mangleClassAccess

  1169                     );

  1170                     i += 2;

  1171                     break;

  1172                 }

  1173                 case opc_putfield: {

  1174                     int indx = readIntArg(byteCodes, i);

  1175                     String[] fi = jc.getFieldInfoName(indx);

  1176                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1177                     final String mangleClass = mangleSig(fi[0]);

  1178                     final String mangleClassAccess = accessClass(mangleClass);

  1179                     emit(out, "@4(false)._@3.call(@2, @1);",

  1180                          smapper.popT(type),

  1181                          smapper.popA(), fi[1],

  1182                          mangleClassAccess

  1183                     );

  1184                     i += 2;

  1185                     break;

  1186                 }

  1187                 case opc_getstatic: {

  1188                     int indx = readIntArg(byteCodes, i);

  1189                     String[] fi = jc.getFieldInfoName(indx);

  1190                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1191                     emit(out, "var @1 = @2(false)._@3();",

  1192                          smapper.pushT(type),

  1193                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1194                     i += 2;

  1195                     addReference(fi[0]);

  1196                     break;

  1197                 }

  1198                 case opc_putstatic: {

  1199                     int indx = readIntArg(byteCodes, i);

  1200                     String[] fi = jc.getFieldInfoName(indx);

  1201                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1202                     emit(out, "@1(false)._@2(@3);",

  1203                          accessClass(fi[0].replace('/', '_')), fi[1],

  1204                          smapper.popT(type));

  1205                     i += 2;

  1206                     addReference(fi[0]);

  1207                     break;

  1208                 }

  1209                 case opc_checkcast: {

  1210                     int indx = readIntArg(byteCodes, i);

  1211                     generateCheckcast(indx, smapper);

  1212                     i += 2;

  1213                     break;

  1214                 }

  1215                 case opc_instanceof: {

  1216                     int indx = readIntArg(byteCodes, i);

  1217                     generateInstanceOf(indx, smapper);

  1218                     i += 2;

  1219                     break;

  1220                 }

  1221                 case opc_athrow: {

  1222                     final Variable v = smapper.popA();

  1223                     smapper.clear();

  1225                     emit(out, "{ var @1 = @2; throw @2; }",

  1226                          smapper.pushA(), v);

  1227                     break;

  1228                 }

  1230                 case opc_monitorenter: {

  1231                     out.append("/* monitor enter */");

  1232                     smapper.popA();

  1233                     break;

  1234                 }

  1236                 case opc_monitorexit: {

  1237                     out.append("/* monitor exit */");

  1238                     smapper.popA();

  1239                     break;

  1240                 }

  1242                 case opc_wide:

  1243                     wide = true;

  1244                     break;

  1246                 default: {

  1247                     wide = false;

  1248                     emit(out, "throw 'unknown bytecode @1';",

  1249                          Integer.toString(c));

  1250                 }

  1251             }

  1252             if (debug(" //")) {

  1253                 generateByteCodeComment(prev, i, byteCodes);

  1254             }

  1255             out.append("\n");

  1256         }

  1257         if (previousTrap != null) {

  1258             generateCatch(previousTrap, byteCodes.length);

  1259         }

  1260         out.append("\n    }\n");

  1261         while (openBraces-- > 0) {

  1262             out.append('}');

  1263         }

  1264         out.append("\n};");

  1265     }

  1267     private int generateIf(byte[] byteCodes, int i,

  1268                            final Variable v2, final Variable v1,

  1269                            final String test) throws IOException {

  1270         int indx = i + readIntArg(byteCodes, i);

  1271         out.append("if (").append(v1)

  1272            .append(' ').append(test).append(' ')

  1273            .append(v2).append(") ");

  1274         goTo(out, i, indx);

  1275         return i + 2;

  1276     }

  1278     private int readIntArg(byte[] byteCodes, int offsetInstruction) {

  1279         final int indxHi = byteCodes[offsetInstruction + 1] << 8;

  1280         final int indxLo = byteCodes[offsetInstruction + 2];

  1281         return (indxHi & 0xffffff00) | (indxLo & 0xff);

  1282     }

  1283     private int readInt4(byte[] byteCodes, int offset) {

  1284         final int d = byteCodes[offset + 0] << 24;

  1285         final int c = byteCodes[offset + 1] << 16;

  1286         final int b = byteCodes[offset + 2] << 8;

  1287         final int a = byteCodes[offset + 3];

  1288         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1289     }

  1290     private int readUByte(byte[] byteCodes, int offset) {

  1291         return byteCodes[offset] & 0xff;

  1292     }

  1294     private int readUShort(byte[] byteCodes, int offset) {

  1295         return ((byteCodes[offset] & 0xff) << 8)

  1296                     | (byteCodes[offset + 1] & 0xff);

  1297     }

  1299     private int readShort(byte[] byteCodes, int offset) {

  1300         return (byteCodes[offset] << 8)

  1301                     | (byteCodes[offset + 1] & 0xff);

  1302     }

  1304     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1305         int i = 0;

  1306         Boolean count = null;

  1307         boolean array = false;

  1308         sig.append("__");

  1309         int firstPos = sig.length();

  1310         while (i < descriptor.length()) {

  1311             char ch = descriptor.charAt(i++);

  1312             switch (ch) {

  1313                 case '(':

  1314                     count = true;

  1315                     continue;

  1316                 case ')':

  1317                     count = false;

  1318                     continue;

  1319                 case 'B':

  1320                 case 'C':

  1321                 case 'D':

  1322                 case 'F':

  1323                 case 'I':

  1324                 case 'J':

  1325                 case 'S':

  1326                 case 'Z':

  1327                     if (count) {

  1328                         if (array) {

  1329                             sig.append("_3");

  1330                         }

  1331                         sig.append(ch);

  1332                         if (ch == 'J' || ch == 'D') {

  1333                             cnt.append('1');

  1334                         } else {

  1335                             cnt.append('0');

  1336                         }

  1337                     } else {

  1338                         sig.insert(firstPos, ch);

  1339                         if (array) {

  1340                             returnType[0] = '[';

  1341                             sig.insert(firstPos, "_3");

  1342                         } else {

  1343                             returnType[0] = ch;

  1344                         }

  1345                     }

  1346                     array = false;

  1347                     continue;

  1348                 case 'V':

  1349                     assert !count;

  1350                     returnType[0] = 'V';

  1351                     sig.insert(firstPos, 'V');

  1352                     continue;

  1353                 case 'L':

  1354                     int next = descriptor.indexOf(';', i);

  1355                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1356                     if (count) {

  1357                         if (array) {

  1358                             sig.append("_3");

  1359                         }

  1360                         sig.append(realSig);

  1361                         cnt.append('0');

  1362                     } else {

  1363                         sig.insert(firstPos, realSig);

  1364                         if (array) {

  1365                             sig.insert(firstPos, "_3");

  1366                         }

  1367                         returnType[0] = 'L';

  1368                     }

  1369                     i = next + 1;

  1370                     array = false;

  1371                     continue;

  1372                 case '[':

  1373                     array = true;

  1374                     continue;

  1375                 default:

  1376                     throw new IllegalStateException("Invalid char: " + ch);

  1377             }

  1378         }

  1379     }

  1381     static String mangleSig(String sig) {

  1382         return mangleSig(sig, 0, sig.length());

  1383     }

  1385     private static String mangleSig(String txt, int first, int last) {

  1386         StringBuilder sb = new StringBuilder();

  1387         for (int i = first; i < last; i++) {

  1388             final char ch = txt.charAt(i);

  1389             switch (ch) {

  1390                 case '/': sb.append('_'); break;

  1391                 case '_': sb.append("_1"); break;

  1392                 case ';': sb.append("_2"); break;

  1393                 case '[': sb.append("_3"); break;

  1394                 default: sb.append(ch); break;

  1395             }

  1396         }

  1397         return sb.toString();

  1398     }

  1400     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1401         StringBuilder name = new StringBuilder();

  1402         if ("<init>".equals(m.getName())) { // NOI18N

  1403             name.append("cons"); // NOI18N

  1404         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1405             name.append("class"); // NOI18N

  1406         } else {

  1407             name.append(m.getName());

  1408         }

  1410         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1411         return name.toString();

  1412     }

  1414     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1415         StringBuilder name = new StringBuilder();

  1416         String descr = mi[2];//mi.getDescriptor();

  1417         String nm= mi[1];

  1418         if ("<init>".equals(nm)) { // NOI18N

  1419             name.append("cons"); // NOI18N

  1420         } else {

  1421             name.append(nm);

  1422         }

  1423         countArgs(descr, returnType, name, cnt);

  1424         return name.toString();

  1425     }

  1427     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1428     throws IOException {

  1429         int methodIndex = readIntArg(byteCodes, i);

  1430         String[] mi = jc.getFieldInfoName(methodIndex);

  1431         char[] returnType = { 'V' };

  1432         StringBuilder cnt = new StringBuilder();

  1433         String mn = findMethodName(mi, cnt, returnType);

  1435         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1436         final Variable[] vars = new Variable[numArguments];

  1438         for (int j = numArguments - 1; j >= 0; --j) {

  1439             vars[j] = mapper.pop();

  1440         }

  1442         if (returnType[0] != 'V') {

  1443             out.append("var ")

  1444                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1445                .append(" = ");

  1446         }

  1448         final String in = mi[0];

  1449         out.append(accessClass(in.replace('/', '_')));

  1450         out.append("(false).");

  1451         if (mn.startsWith("cons_")) {

  1452             out.append("constructor.");

  1453         }

  1454         out.append(mn);

  1455         if (isStatic) {

  1456             out.append('(');

  1457         } else {

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

  1459         }

  1460         if (numArguments > 0) {

  1461             out.append(vars[0]);

  1462             for (int j = 1; j < numArguments; ++j) {

  1463                 out.append(", ");

  1464                 out.append(vars[j]);

  1465             }

  1466         }

  1467         out.append(");");

  1468         i += 2;

  1469         addReference(in);

  1470         return i;

  1471     }

  1472     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1473     throws IOException {

  1474         int methodIndex = readIntArg(byteCodes, i);

  1475         String[] mi = jc.getFieldInfoName(methodIndex);

  1476         char[] returnType = { 'V' };

  1477         StringBuilder cnt = new StringBuilder();

  1478         String mn = findMethodName(mi, cnt, returnType);

  1480         final int numArguments = cnt.length() + 1;

  1481         final Variable[] vars = new Variable[numArguments];

  1483         for (int j = numArguments - 1; j >= 0; --j) {

  1484             vars[j] = mapper.pop();

  1485         }

  1487         if (returnType[0] != 'V') {

  1488             out.append("var ")

  1489                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1490                .append(" = ");

  1491         }

  1493         out.append(vars[0]).append('.');

  1494         out.append(mn);

  1495         out.append('(');

  1496         String sep = "";

  1497         for (int j = 1; j < numArguments; ++j) {

  1498             out.append(sep);

  1499             out.append(vars[j]);

  1500             sep = ", ";

  1501         }

  1502         out.append(");");

  1503         i += 2;

  1504         return i;

  1505     }

  1507     private void addReference(String cn) throws IOException {

  1508         if (requireReference(cn)) {

  1509             debug(" /* needs " + cn + " */");

  1510         }

  1511     }

  1513     private void outType(String d, StringBuilder out) {

  1514         int arr = 0;

  1515         while (d.charAt(0) == '[') {

  1516             out.append('A');

  1517             d = d.substring(1);

  1518         }

  1519         if (d.charAt(0) == 'L') {

  1520             assert d.charAt(d.length() - 1) == ';';

  1521             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1522         } else {

  1523             out.append(d);

  1524         }

  1525     }

  1527     private String encodeConstant(int entryIndex) throws IOException {

  1528         String[] classRef = { null };

  1529         String s = jc.stringValue(entryIndex, classRef);

  1530         if (classRef[0] != null) {

  1531             if (classRef[0].startsWith("[")) {

  1532                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1533             } else {

  1534                 addReference(classRef[0]);

  1535                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1536             }

  1537         }

  1538         return s;

  1539     }

  1541     private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {

  1542         byte[] arr = m.findAnnotationData(true);

  1543         if (arr == null) {

  1544             return null;

  1545         }

  1546         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1547         class P extends AnnotationParser {

  1548             public P() {

  1549                 super(false, true);

  1550             }

  1552             int cnt;

  1553             String[] args = new String[30];

  1554             String body;

  1556             @Override

  1557             protected void visitAttr(String type, String attr, String at, String value) {

  1558                 if (type.equals(jvmType)) {

  1559                     if ("body".equals(attr)) {

  1560                         body = value;

  1561                     } else if ("args".equals(attr)) {

  1562                         args[cnt++] = value;

  1563                     } else {

  1564                         throw new IllegalArgumentException(attr);

  1565                     }

  1566                 }

  1567             }

  1568         }

  1569         P p = new P();

  1570         p.parse(arr, jc);

  1571         if (p.body == null) {

  1572             return null;

  1573         }

  1574         StringBuilder cnt = new StringBuilder();

  1575         final String mn = findMethodName(m, cnt);

  1576         out.append(prefix).append(mn);

  1577         out.append(" = function(");

  1578         String space = "";

  1579         int index = 0;

  1580         for (int i = 0; i < cnt.length(); i++) {

  1581             out.append(space);

  1582             space = outputArg(out, p.args, index);

  1583             index++;

  1584         }

  1585         out.append(") {").append("\n");

  1586         out.append(p.body);

  1587         out.append("\n}\n");

  1588         return mn;

  1589     }

  1590     private static String className(ClassData jc) {

  1591         //return jc.getName().getInternalName().replace('/', '_');

  1592         return jc.getClassName().replace('/', '_');

  1593     }

  1595     private static String[] findAnnotation(

  1596         byte[] arr, ClassData cd, final String className,

  1597         final String... attrNames

  1598     ) throws IOException {

  1599         if (arr == null) {

  1600             return null;

  1601         }

  1602         final String[] values = new String[attrNames.length];

  1603         final boolean[] found = { false };

  1604         final String jvmType = "L" + className.replace('.', '/') + ";";

  1605         AnnotationParser ap = new AnnotationParser(false, true) {

  1606             @Override

  1607             protected void visitAttr(String type, String attr, String at, String value) {

  1608                 if (type.equals(jvmType)) {

  1609                     found[0] = true;

  1610                     for (int i = 0; i < attrNames.length; i++) {

  1611                         if (attrNames[i].equals(attr)) {

  1612                             values[i] = value;

  1613                         }

  1614                     }

  1615                 }

  1616             }

  1618         };

  1619         ap.parse(arr, cd);

  1620         return found[0] ? values : null;

  1621     }

  1623     private CharSequence initField(FieldData v) {

  1624         final String is = v.getInternalSig();

  1625         if (is.length() == 1) {

  1626             switch (is.charAt(0)) {

  1627                 case 'S':

  1628                 case 'J':

  1629                 case 'B':

  1630                 case 'Z':

  1631                 case 'C':

  1632                 case 'I': return " = 0;";

  1633                 case 'F':

  1634                 case 'D': return " = 0.0;";

  1635                 default:

  1636                     throw new IllegalStateException(is);

  1637             }

  1638         }

  1639         return " = null;";

  1640     }

  1642     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1643         AnnotationParser ap = new AnnotationParser(true, false) {

  1644             int[] cnt = new int[32];

  1645             int depth;

  1647             @Override

  1648             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1649                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1650                 requireReference(slashType);

  1652                 if (cnt[depth]++ > 0) {

  1653                     out.append(",");

  1654                 }

  1655                 if (top) {

  1656                     out.append('"').append(attrType).append("\" : ");

  1657                 }

  1658                 out.append("{\n");

  1659                 cnt[++depth] = 0;

  1660             }

  1662             @Override

  1663             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1664                 out.append("\n}\n");

  1665                 depth--;

  1666             }

  1668             @Override

  1669             protected void visitValueStart(String attrName, char type) throws IOException {

  1670                 if (cnt[depth]++ > 0) {

  1671                     out.append(",\n");

  1672                 }

  1673                 cnt[++depth] = 0;

  1674                 if (attrName != null) {

  1675                     out.append(attrName).append(" : ");

  1676                 }

  1677                 if (type == '[') {

  1678                     out.append("[");

  1679                 }

  1680             }

  1682             @Override

  1683             protected void visitValueEnd(String attrName, char type) throws IOException {

  1684                 if (type == '[') {

  1685                     out.append("]");

  1686                 }

  1687                 depth--;

  1688             }

  1690             @Override

  1691             protected void visitAttr(String type, String attr, String attrType, String value)

  1692             throws IOException {

  1693                 if (attr == null && value == null) {

  1694                     return;

  1695                 }

  1696                 out.append(value);

  1697             }

  1699             @Override

  1700             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1701             throws IOException {

  1702                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1703                 requireReference(slashType);

  1705                 out.append(accessClass(slashType.replace('/', '_')))

  1706                    .append("(false).constructor.").append(value);

  1707             }

  1708         };

  1709         ap.parse(data, cd);

  1710     }

  1712     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1713         final String name = args[indx];

  1714         if (name == null) {

  1715             return "";

  1716         }

  1717         if (name.contains(",")) {

  1718             throw new IOException("Wrong parameter with ',': " + name);

  1719         }

  1720         out.append(name);

  1721         return ",";

  1722     }

  1724     private static void emit(final Appendable out,

  1725                              final String format,

  1726                              final CharSequence... params) throws IOException {

  1727         final int length = format.length();

  1729         int processed = 0;

  1730         int paramOffset = format.indexOf('@');

  1731         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1732             final char paramChar = format.charAt(paramOffset + 1);

  1733             if ((paramChar >= '1') && (paramChar <= '9')) {

  1734                 final int paramIndex = paramChar - '0' - 1;

  1736                 out.append(format, processed, paramOffset);

  1737                 out.append(params[paramIndex]);

  1739                 ++paramOffset;

  1740                 processed = paramOffset + 1;

  1741             }

  1743             paramOffset = format.indexOf('@', paramOffset + 1);

  1744         }

  1746         out.append(format, processed, length);

  1747     }

  1749     private void generateCatch(TrapData[] traps, int current) throws IOException {

  1750         out.append("} catch (e) {\n");

  1751         int finallyPC = -1;

  1752         for (TrapData e : traps) {

  1753             if (e == null) {

  1754                 break;

  1755             }

  1756             if (e.catch_cpx != 0) { //not finally

  1757                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1758                 addReference(classInternalName);

  1759                 if ("java/lang/Throwable".equals(classInternalName)) {

  1760                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1761                     out.append("  var stA0 = e;");

  1762                     out.append("} else {");

  1763                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1764                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1765                     out.append("}");

  1766                     goTo(out, current, e.handler_pc);

  1767                 } else {

  1768                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

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

  1770                     goTo(out, current, e.handler_pc);

  1771                     out.append("}\n");

  1772                 }

  1773             } else {

  1774                 finallyPC = e.handler_pc;

  1775             }

  1776         }

  1777         if (finallyPC == -1) {

  1778             out.append("throw e;");

  1779         } else {

  1780             out.append("var stA0 = e;");

  1781             goTo(out, current, finallyPC);

  1782         }

  1783         out.append("\n}");

  1784     }

  1786     private static void goTo(Appendable out, int current, int to) throws IOException {

  1787         if (to < current) {

  1788             out.append("{ gt = 0; continue X_" + to + "; }");

  1789         } else {

  1790             out.append("{ gt = " + to + "; break IF; }");

  1791         }

  1792     }

  1794     private static void emitIf(Appendable out, String pattern, Variable param, int current, int to) throws IOException {

  1795         emit(out, pattern, param);

  1796         goTo(out, current, to);

  1797     }

  1799     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1800         String jvmType;

  1801         switch (atype) {

  1802             case 4: jvmType = "[Z"; break;

  1803             case 5: jvmType = "[C"; break;

  1804             case 6: jvmType = "[F"; break;

  1805             case 7: jvmType = "[D"; break;

  1806             case 8: jvmType = "[B"; break;

  1807             case 9: jvmType = "[S"; break;

  1808             case 10: jvmType = "[I"; break;

  1809             case 11: jvmType = "[J"; break;

  1810             default: throw new IllegalStateException("Array type: " + atype);

  1811         }

  1812         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  1813              smapper.popI(), smapper.pushA(), jvmType);

  1814     }

  1816     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  1817         String typeName = jc.getClassName(type);

  1818         if (typeName.startsWith("[")) {

  1819             typeName = "[" + typeName;

  1820         } else {

  1821             typeName = "[L" + typeName + ";";

  1822         }

  1823         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  1824              smapper.popI(), smapper.pushA(), typeName);

  1825     }

  1827     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  1828         String typeName = jc.getClassName(type);

  1829         int dim = readUByte(byteCodes, ++i);

  1830         StringBuilder dims = new StringBuilder();

  1831         dims.append('[');

  1832         for (int d = 0; d < dim; d++) {

  1833             if (d != 0) {

  1834                 dims.insert(1, ",");

  1835             }

  1836             dims.insert(1, smapper.popI());

  1837         }

  1838         dims.append(']');

  1839         emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  1840              dims.toString(), smapper.pushA(), typeName);

  1841         return i;

  1842     }

  1844     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper) throws IOException {

  1845         int table = i / 4 * 4 + 4;

  1846         int dflt = i + readInt4(byteCodes, table);

  1847         table += 4;

  1848         int low = readInt4(byteCodes, table);

  1849         table += 4;

  1850         int high = readInt4(byteCodes, table);

  1851         table += 4;

  1852         out.append("switch (").append(smapper.popI()).append(") {\n");

  1853         while (low <= high) {

  1854             int offset = i + readInt4(byteCodes, table);

  1855             table += 4;

  1856             out.append("  case " + low).append(":"); goTo(out, i, offset); out.append('\n');

  1857             low++;

  1858         }

  1859         out.append("  default: ");

  1860         goTo(out, i, dflt);

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

  1862         i = table - 1;

  1863         return i;

  1864     }

  1866     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper) throws IOException {

  1867         int table = i / 4 * 4 + 4;

  1868         int dflt = i + readInt4(byteCodes, table);

  1869         table += 4;

  1870         int n = readInt4(byteCodes, table);

  1871         table += 4;

  1872         out.append("switch (").append(smapper.popI()).append(") {\n");

  1873         while (n-- > 0) {

  1874             int cnstnt = readInt4(byteCodes, table);

  1875             table += 4;

  1876             int offset = i + readInt4(byteCodes, table);

  1877             table += 4;

  1878             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset); out.append('\n');

  1879         }

  1880         out.append("  default: ");

  1881         goTo(out, i, dflt);

  1882         out.append("\n}");

  1883         i = table - 1;

  1884         return i;

  1885     }

  1887     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  1888         final String type = jc.getClassName(indx);

  1889         if (!type.startsWith("[")) {

  1890             emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  1891                  smapper.popA(), smapper.pushI(),

  1892                  type.replace('/', '_'));

  1893         } else {

  1894             emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1895                 smapper.popA(), smapper.pushI(),

  1896                 type

  1897             );

  1898         }

  1899     }

  1901     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  1902         final String type = jc.getClassName(indx);

  1903         if (!type.startsWith("[")) {

  1904             emit(out,

  1905                  "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1906                  smapper.getA(0), type.replace('/', '_'));

  1907         } else {

  1908             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);",

  1909                  smapper.getA(0), type

  1910             );

  1911         }

  1912     }

  1914     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  1915         for (int j = prev; j <= i; j++) {

  1916             out.append(" ");

  1917             final int cc = readUByte(byteCodes, j);

  1918             out.append(Integer.toString(cc));

  1919         }

  1920     }

  1921 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Tue, 12 Mar 2013 15:14:20 +0100
changeset 842	5c4202b95e3c
parent 839	2838bc348caf
child 843	140c739c607f
permissions	-rw-r--r--