hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@977cc6141083

     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     protected void declaredClass(ClassData classData, String mangledName)

    63             throws IOException {

    64     }

    66     /** Prints out a debug message.

    67      *

    68      * @param msg the message

    69      * @return true if the message has been printed

    70      * @throws IOException

    71      */

    72     boolean debug(String msg) throws IOException {

    73         out.append(msg);

    74         return true;

    75     }

    77     /**

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

    79      *

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

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

    82      *

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

    84      */

    86     public String compile(InputStream classFile) throws IOException {

    87         this.jc = new ClassData(classFile);

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

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

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

    91             );

    92         }

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

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

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

    96             "resource", "processByteCode"

    97         );

    98         if (arr != null) {

    99             if (!arr[0].isEmpty()) {

   100                 requireScript(arr[0]);

   101             }

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

   103                 return null;

   104             }

   105         }

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

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

   108             "container", "prototype"

   109         );

   110         StringArray toInitilize = new StringArray();

   111         final String className = className(jc);

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

   113         out.append("function ").append(className).append("() {");

   114         out.append("\n  var CLS = ").append(className).append(';');

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

   116         if (proto == null) {

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

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

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

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

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

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

   123         } else {

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

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

   126                 proto[0] = "p";

   127             }

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

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

   130         }

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

   132             if (v.isStatic()) {

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

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

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

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

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

   138             } else {

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

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

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

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

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

   144                    .append("; };");

   145             }

   147 //            obfuscationDelegate.exportField(out, "c", "_" + v.getName(), v);

   148         }

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

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

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

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

   153                 "name", "value"

   154             );

   155             if (only != null) {

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

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

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

   159                 }

   160                 continue;

   161             }

   162             String destObject;

   163             String mn;

   164             out.append("\n    ");

   165             if (m.isStatic()) {

   166                 destObject = "c";

   167                 mn = generateStaticMethod(destObject, m, toInitilize);

   168             } else {

   169                 if (m.isConstructor()) {

   170                     destObject = "CLS";

   171                     mn = generateInstanceMethod(destObject, m);

   172                 } else {

   173                     destObject = "c";

   174                     mn = generateInstanceMethod(destObject, m);

   175                 }

   176             }

   177 //            obfuscationDelegate.exportMethod(out, destObject, mn, m);

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

   179             if (runAnno != null) {

   180                 out.append("\n    ").append(destObject).append(".").append(mn).append(".anno = {");

   181                 generateAnno(jc, out, runAnno);

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

   183             }

   184             out.append("\n    ").append(destObject).append(".").append(mn).append(".access = " + m.getAccess()).append(";");

   185             out.append("\n    ").append(destObject).append(".").append(mn).append(".cls = CLS;");

   186         }

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

   188         out.append("\n    c['$instOf_").append(className).append("'] = true;");

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

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

   191         }

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

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

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

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

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

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

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

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

   200         if (classAnno != null) {

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

   202             generateAnno(jc, out, classAnno);

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

   204         }

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

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

   207         }

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

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

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

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

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

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

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

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

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

   217                 "name", "value"

   218             );

   219             if (only != null) {

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

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

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

   223                 }

   224                 continue;

   225             }

   226             if (!v.isStatic()) {

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

   228                     append(className).append('_').

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

   230             }

   231         }

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

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

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

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

   237         declaredClass(jc, className);

   239 //        StringBuilder sb = new StringBuilder();

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

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

   242 //        }

   243         return "";

   244     }

   245     private String generateStaticMethod(String destObject, MethodData m, StringArray toInitilize) throws IOException {

   246         String jsb = javaScriptBody(destObject, m, true);

   247         if (jsb != null) {

   248             return jsb;

   249         }

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

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

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

   253         }

   254         generateMethod(destObject, mn, m);

   255         return mn;

   256     }

   258     private String generateInstanceMethod(String destObject, MethodData m) throws IOException {

   259         String jsb = javaScriptBody(destObject, m, false);

   260         if (jsb != null) {

   261             return jsb;

   262         }

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

   264         generateMethod(destObject, mn, m);

   265         return mn;

   266     }

   268     private void generateMethod(String destObject, String name, MethodData m)

   269             throws IOException {

   270         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   271         TrapDataIterator trap = m.getTrapDataIterator();

   272         final LocalsMapper lmapper =

   273                 new LocalsMapper(stackMapIterator.getArguments());

   275         out.append(destObject).append(".").append(name).append(" = function(");

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

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

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

   280         if (byteCodes == null) {

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

   282                .append(jc.getClassName()).append('.')

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

   284             out.append("};");

   285             return;

   286         }

   288         final StackMapper smapper = new StackMapper();

   290         if (!m.isStatic()) {

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

   292         }

   294         int lastStackFrame = -1;

   295         TrapData[] previousTrap = null;

   296         boolean wide = false;

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

   299         int openBraces = 0;

   300         int topMostLabel = 0;

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

   302             int prev = i;

   303             stackMapIterator.advanceTo(i);

   304             boolean changeInCatch = trap.advanceTo(i);

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

   306                 if (previousTrap != null) {

   307                     generateCatch(previousTrap, i, topMostLabel);

   308                     previousTrap = null;

   309                 }

   310             }

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

   312                 if (i != 0) {

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

   314                 }

   315                 if (openBraces > 64) {

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

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

   318                     }

   319                     openBraces = 1;

   320                     topMostLabel = i;

   321                 }

   323                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   327                 openBraces++;

   328                 changeInCatch = true;

   329             } else {

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

   331             }

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

   333                 out.append("try {");

   334                 previousTrap = trap.current();

   335             }

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

   337             switch (c) {

   338                 case opc_aload_0:

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

   340                     break;

   341                 case opc_iload_0:

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

   343                     break;

   344                 case opc_lload_0:

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

   346                     break;

   347                 case opc_fload_0:

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

   349                     break;

   350                 case opc_dload_0:

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

   352                     break;

   353                 case opc_aload_1:

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

   355                     break;

   356                 case opc_iload_1:

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

   358                     break;

   359                 case opc_lload_1:

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

   361                     break;

   362                 case opc_fload_1:

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

   364                     break;

   365                 case opc_dload_1:

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

   367                     break;

   368                 case opc_aload_2:

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

   370                     break;

   371                 case opc_iload_2:

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

   373                     break;

   374                 case opc_lload_2:

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

   376                     break;

   377                 case opc_fload_2:

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

   379                     break;

   380                 case opc_dload_2:

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

   382                     break;

   383                 case opc_aload_3:

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

   385                     break;

   386                 case opc_iload_3:

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

   388                     break;

   389                 case opc_lload_3:

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

   391                     break;

   392                 case opc_fload_3:

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

   394                     break;

   395                 case opc_dload_3:

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

   397                     break;

   398                 case opc_iload: {

   399                     ++i;

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

   401                                           : readUByte(byteCodes, i);

   402                     wide = false;

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

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

   405                     break;

   406                 }

   407                 case opc_lload: {

   408                     ++i;

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

   410                                           : readUByte(byteCodes, i);

   411                     wide = false;

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

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

   414                     break;

   415                 }

   416                 case opc_fload: {

   417                     ++i;

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

   419                                           : readUByte(byteCodes, i);

   420                     wide = false;

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

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

   423                     break;

   424                 }

   425                 case opc_dload: {

   426                     ++i;

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

   428                                           : readUByte(byteCodes, i);

   429                     wide = false;

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

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

   432                     break;

   433                 }

   434                 case opc_aload: {

   435                     ++i;

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

   437                                           : readUByte(byteCodes, i);

   438                     wide = false;

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

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

   441                     break;

   442                 }

   443                 case opc_istore: {

   444                     ++i;

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

   446                                           : readUByte(byteCodes, i);

   447                     wide = false;

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

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

   450                     break;

   451                 }

   452                 case opc_lstore: {

   453                     ++i;

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

   455                                           : readUByte(byteCodes, i);

   456                     wide = false;

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

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

   459                     break;

   460                 }

   461                 case opc_fstore: {

   462                     ++i;

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

   464                                           : readUByte(byteCodes, i);

   465                     wide = false;

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

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

   468                     break;

   469                 }

   470                 case opc_dstore: {

   471                     ++i;

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

   473                                           : readUByte(byteCodes, i);

   474                     wide = false;

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

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

   477                     break;

   478                 }

   479                 case opc_astore: {

   480                     ++i;

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

   482                                           : readUByte(byteCodes, i);

   483                     wide = false;

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

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

   486                     break;

   487                 }

   488                 case opc_astore_0:

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

   490                     break;

   491                 case opc_istore_0:

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

   493                     break;

   494                 case opc_lstore_0:

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

   496                     break;

   497                 case opc_fstore_0:

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

   499                     break;

   500                 case opc_dstore_0:

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

   502                     break;

   503                 case opc_astore_1:

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

   505                     break;

   506                 case opc_istore_1:

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

   508                     break;

   509                 case opc_lstore_1:

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

   511                     break;

   512                 case opc_fstore_1:

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

   514                     break;

   515                 case opc_dstore_1:

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

   517                     break;

   518                 case opc_astore_2:

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

   520                     break;

   521                 case opc_istore_2:

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

   523                     break;

   524                 case opc_lstore_2:

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

   526                     break;

   527                 case opc_fstore_2:

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

   529                     break;

   530                 case opc_dstore_2:

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

   532                     break;

   533                 case opc_astore_3:

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

   535                     break;

   536                 case opc_istore_3:

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

   538                     break;

   539                 case opc_lstore_3:

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

   541                     break;

   542                 case opc_fstore_3:

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

   544                     break;

   545                 case opc_dstore_3:

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

   547                     break;

   548                 case opc_iadd:

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

   550                     break;

   551                 case opc_ladd:

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

   553                     break;

   554                 case opc_fadd:

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

   556                     break;

   557                 case opc_dadd:

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

   559                     break;

   560                 case opc_isub:

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

   562                     break;

   563                 case opc_lsub:

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

   565                     break;

   566                 case opc_fsub:

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

   568                     break;

   569                 case opc_dsub:

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

   571                     break;

   572                 case opc_imul:

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

   574                     break;

   575                 case opc_lmul:

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

   577                     break;

   578                 case opc_fmul:

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

   580                     break;

   581                 case opc_dmul:

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

   583                     break;

   584                 case opc_idiv:

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

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

   587                     break;

   588                 case opc_ldiv:

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

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

   591                     break;

   592                 case opc_fdiv:

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

   594                     break;

   595                 case opc_ddiv:

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

   597                     break;

   598                 case opc_irem:

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

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

   601                     break;

   602                 case opc_lrem:

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

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

   605                     break;

   606                 case opc_frem:

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

   608                     break;

   609                 case opc_drem:

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

   611                     break;

   612                 case opc_iand:

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

   614                     break;

   615                 case opc_land:

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

   617                     break;

   618                 case opc_ior:

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

   620                     break;

   621                 case opc_lor:

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

   623                     break;

   624                 case opc_ixor:

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

   626                     break;

   627                 case opc_lxor:

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

   629                     break;

   630                 case opc_ineg:

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

   632                     break;

   633                 case opc_lneg:

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

   635                     break;

   636                 case opc_fneg:

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

   638                     break;

   639                 case opc_dneg:

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

   641                     break;

   642                 case opc_ishl:

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

   644                     break;

   645                 case opc_lshl:

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

   647                     break;

   648                 case opc_ishr:

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

   650                     break;

   651                 case opc_lshr:

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

   653                     break;

   654                 case opc_iushr:

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

   656                     break;

   657                 case opc_lushr:

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

   659                     break;

   660                 case opc_iinc: {

   661                     ++i;

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

   663                                              : readUByte(byteCodes, i);

   664                     ++i;

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

   666                                             : byteCodes[i];

   667                     wide = false;

   668                     if (incrBy == 1) {

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

   670                     } else {

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

   672                              lmapper.getI(varIndx),

   673                              Integer.toString(incrBy));

   674                     }

   675                     break;

   676                 }

   677                 case opc_return:

   678                     emit(out, "return;");

   679                     break;

   680                 case opc_ireturn:

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

   682                     break;

   683                 case opc_lreturn:

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

   685                     break;

   686                 case opc_freturn:

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

   688                     break;

   689                 case opc_dreturn:

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

   691                     break;

   692                 case opc_areturn:

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

   694                     break;

   695                 case opc_i2l:

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

   697                     break;

   698                 case opc_i2f:

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

   700                     break;

   701                 case opc_i2d:

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

   703                     break;

   704                 case opc_l2i:

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

   706                     break;

   707                     // max int check?

   708                 case opc_l2f:

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

   710                     break;

   711                 case opc_l2d:

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

   713                     break;

   714                 case opc_f2d:

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

   716                     break;

   717                 case opc_d2f:

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

   719                     break;

   720                 case opc_f2i:

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

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

   723                     break;

   724                 case opc_f2l:

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

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

   727                     break;

   728                 case opc_d2i:

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

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

   731                     break;

   732                 case opc_d2l:

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

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

   735                     break;

   736                 case opc_i2b:

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

   738                     break;

   739                 case opc_i2c:

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

   741                     break;

   742                 case opc_i2s:

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

   744                     break;

   745                 case opc_aconst_null:

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

   747                     break;

   748                 case opc_iconst_m1:

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

   750                     break;

   751                 case opc_iconst_0:

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

   753                     break;

   754                 case opc_dconst_0:

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

   756                     break;

   757                 case opc_lconst_0:

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

   759                     break;

   760                 case opc_fconst_0:

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

   762                     break;

   763                 case opc_iconst_1:

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

   765                     break;

   766                 case opc_lconst_1:

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

   768                     break;

   769                 case opc_fconst_1:

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

   771                     break;

   772                 case opc_dconst_1:

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

   774                     break;

   775                 case opc_iconst_2:

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

   777                     break;

   778                 case opc_fconst_2:

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

   780                     break;

   781                 case opc_iconst_3:

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

   783                     break;

   784                 case opc_iconst_4:

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

   786                     break;

   787                 case opc_iconst_5:

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

   789                     break;

   790                 case opc_ldc: {

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

   792                     String v = encodeConstant(indx);

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

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

   795                     break;

   796                 }

   797                 case opc_ldc_w:

   798                 case opc_ldc2_w: {

   799                     int indx = readUShortArg(byteCodes, i);

   800                     i += 2;

   801                     String v = encodeConstant(indx);

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

   803                     if (type == VarType.LONG) {

   804                         final Long lv = new Long(v);

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

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

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

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

   809                     } else {

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

   811                     }

   812                     break;

   813                 }

   814                 case opc_lcmp:

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

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

   817                     break;

   818                 case opc_fcmpl:

   819                 case opc_fcmpg:

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

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

   822                     break;

   823                 case opc_dcmpl:

   824                 case opc_dcmpg:

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

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

   827                     break;

   828                 case opc_if_acmpeq:

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

   830                                    "===", topMostLabel);

   831                     break;

   832                 case opc_if_acmpne:

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

   834                                    "!==", topMostLabel);

   835                     break;

   836                 case opc_if_icmpeq:

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

   838                                    "==", topMostLabel);

   839                     break;

   840                 case opc_ifeq: {

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

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

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

   844                     i += 2;

   845                     break;

   846                 }

   847                 case opc_ifne: {

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

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

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

   851                     i += 2;

   852                     break;

   853                 }

   854                 case opc_iflt: {

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

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

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

   858                     i += 2;

   859                     break;

   860                 }

   861                 case opc_ifle: {

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

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

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

   865                     i += 2;

   866                     break;

   867                 }

   868                 case opc_ifgt: {

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

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

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

   872                     i += 2;

   873                     break;

   874                 }

   875                 case opc_ifge: {

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

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

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

   879                     i += 2;

   880                     break;

   881                 }

   882                 case opc_ifnonnull: {

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

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

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

   886                     i += 2;

   887                     break;

   888                 }

   889                 case opc_ifnull: {

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

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

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

   893                     i += 2;

   894                     break;

   895                 }

   896                 case opc_if_icmpne:

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

   898                                    "!=", topMostLabel);

   899                     break;

   900                 case opc_if_icmplt:

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

   902                                    "<", topMostLabel);

   903                     break;

   904                 case opc_if_icmple:

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

   906                                    "<=", topMostLabel);

   907                     break;

   908                 case opc_if_icmpgt:

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

   910                                    ">", topMostLabel);

   911                     break;

   912                 case opc_if_icmpge:

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

   914                                    ">=", topMostLabel);

   915                     break;

   916                 case opc_goto: {

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

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

   919                     i += 2;

   920                     break;

   921                 }

   922                 case opc_lookupswitch: {

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

   924                     break;

   925                 }

   926                 case opc_tableswitch: {

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

   928                     break;

   929                 }

   930                 case opc_invokeinterface: {

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

   932                     break;

   933                 }

   934                 case opc_invokevirtual:

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

   936                     break;

   937                 case opc_invokespecial:

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

   939                     break;

   940                 case opc_invokestatic:

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

   942                     break;

   943                 case opc_new: {

   944                     int indx = readUShortArg(byteCodes, i);

   945                     String ci = jc.getClassName(indx);

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

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

   948                     addReference(ci);

   949                     i += 2;

   950                     break;

   951                 }

   952                 case opc_newarray:

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

   954                     generateNewArray(atype, smapper);

   955                     break;

   956                 case opc_anewarray: {

   957                     int type = readUShortArg(byteCodes, i);

   958                     i += 2;

   959                     generateANewArray(type, smapper);

   960                     break;

   961                 }

   962                 case opc_multianewarray: {

   963                     int type = readUShortArg(byteCodes, i);

   964                     i += 2;

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

   966                     break;

   967                 }

   968                 case opc_arraylength:

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

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

   971                     break;

   972                 case opc_lastore:

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

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

   975                     break;

   976                 case opc_fastore:

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

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

   979                     break;

   980                 case opc_dastore:

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

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

   983                     break;

   984                 case opc_aastore:

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

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

   987                     break;

   988                 case opc_iastore:

   989                 case opc_bastore:

   990                 case opc_castore:

   991                 case opc_sastore:

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

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

   994                     break;

   995                 case opc_laload:

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

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

   998                     break;

   999                 case opc_faload:

  1000                     emit(out, "var @3 = @2.at(@1);",

  1001                          smapper.popI(), smapper.popA(), smapper.pushF());

  1002                     break;

  1003                 case opc_daload:

  1004                     emit(out, "var @3 = @2.at(@1);",

  1005                          smapper.popI(), smapper.popA(), smapper.pushD());

  1006                     break;

  1007                 case opc_aaload:

  1008                     emit(out, "var @3 = @2.at(@1);",

  1009                          smapper.popI(), smapper.popA(), smapper.pushA());

  1010                     break;

  1011                 case opc_iaload:

  1012                 case opc_baload:

  1013                 case opc_caload:

  1014                 case opc_saload:

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

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

  1017                     break;

  1018                 case opc_pop:

  1019                 case opc_pop2:

  1020                     smapper.pop(1);

  1021                     debug("/* pop */");

  1022                     break;

  1023                 case opc_dup: {

  1024                     final Variable v = smapper.get(0);

  1025                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1026                     break;

  1027                 }

  1028                 case opc_dup2: {

  1029                     final Variable vi1 = smapper.get(0);

  1031                     if (vi1.isCategory2()) {

  1032                         emit(out, "var @1 = @2;",

  1033                              smapper.pushT(vi1.getType()), vi1);

  1034                     } else {

  1035                         final Variable vi2 = smapper.get(1);

  1036                         emit(out, "var @1 = @2, @3 = @4;",

  1037                              smapper.pushT(vi2.getType()), vi2,

  1038                              smapper.pushT(vi1.getType()), vi1);

  1039                     }

  1040                     break;

  1041                 }

  1042                 case opc_dup_x1: {

  1043                     final Variable vi1 = smapper.pop();

  1044                     final Variable vi2 = smapper.pop();

  1045                     final Variable vo3 = smapper.pushT(vi1.getType());

  1046                     final Variable vo2 = smapper.pushT(vi2.getType());

  1047                     final Variable vo1 = smapper.pushT(vi1.getType());

  1049                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1050                          vo1, vi1, vo2, vi2, vo3, vo1);

  1051                     break;

  1052                 }

  1053                 case opc_dup2_x1: {

  1054                     final Variable vi1 = smapper.pop();

  1055                     final Variable vi2 = smapper.pop();

  1057                     if (vi1.isCategory2()) {

  1058                         final Variable vo3 = smapper.pushT(vi1.getType());

  1059                         final Variable vo2 = smapper.pushT(vi2.getType());

  1060                         final Variable vo1 = smapper.pushT(vi1.getType());

  1062                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1063                              vo1, vi1, vo2, vi2, vo3, vo1);

  1064                     } else {

  1065                         final Variable vi3 = smapper.pop();

  1066                         final Variable vo5 = smapper.pushT(vi2.getType());

  1067                         final Variable vo4 = smapper.pushT(vi1.getType());

  1068                         final Variable vo3 = smapper.pushT(vi3.getType());

  1069                         final Variable vo2 = smapper.pushT(vi2.getType());

  1070                         final Variable vo1 = smapper.pushT(vi1.getType());

  1072                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1073                              vo1, vi1, vo2, vi2, vo3, vi3);

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

  1075                              vo4, vo1, vo5, vo2);

  1076                     }

  1077                     break;

  1078                 }

  1079                 case opc_dup_x2: {

  1080                     final Variable vi1 = smapper.pop();

  1081                     final Variable vi2 = smapper.pop();

  1083                     if (vi2.isCategory2()) {

  1084                         final Variable vo3 = smapper.pushT(vi1.getType());

  1085                         final Variable vo2 = smapper.pushT(vi2.getType());

  1086                         final Variable vo1 = smapper.pushT(vi1.getType());

  1088                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1089                              vo1, vi1, vo2, vi2, vo3, vo1);

  1090                     } else {

  1091                         final Variable vi3 = smapper.pop();

  1092                         final Variable vo4 = smapper.pushT(vi1.getType());

  1093                         final Variable vo3 = smapper.pushT(vi3.getType());

  1094                         final Variable vo2 = smapper.pushT(vi2.getType());

  1095                         final Variable vo1 = smapper.pushT(vi1.getType());

  1097                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1098                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1099                     }

  1100                     break;

  1101                 }

  1102                 case opc_dup2_x2: {

  1103                     final Variable vi1 = smapper.pop();

  1104                     final Variable vi2 = smapper.pop();

  1106                     if (vi1.isCategory2()) {

  1107                         if (vi2.isCategory2()) {

  1108                             final Variable vo3 = smapper.pushT(vi1.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, vo1);

  1114                         } else {

  1115                             final Variable vi3 = smapper.pop();

  1116                             final Variable vo4 = smapper.pushT(vi1.getType());

  1117                             final Variable vo3 = smapper.pushT(vi3.getType());

  1118                             final Variable vo2 = smapper.pushT(vi2.getType());

  1119                             final Variable vo1 = smapper.pushT(vi1.getType());

  1121                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1122                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1123                         }

  1124                     } else {

  1125                         final Variable vi3 = smapper.pop();

  1127                         if (vi3.isCategory2()) {

  1128                             final Variable vo5 = smapper.pushT(vi2.getType());

  1129                             final Variable vo4 = smapper.pushT(vi1.getType());

  1130                             final Variable vo3 = smapper.pushT(vi3.getType());

  1131                             final Variable vo2 = smapper.pushT(vi2.getType());

  1132                             final Variable vo1 = smapper.pushT(vi1.getType());

  1134                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1135                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1136                             emit(out, " @1 = @2, @3 = @4;",

  1137                                  vo4, vo1, vo5, vo2);

  1138                         } else {

  1139                             final Variable vi4 = smapper.pop();

  1140                             final Variable vo6 = smapper.pushT(vi2.getType());

  1141                             final Variable vo5 = smapper.pushT(vi1.getType());

  1142                             final Variable vo4 = smapper.pushT(vi4.getType());

  1143                             final Variable vo3 = smapper.pushT(vi3.getType());

  1144                             final Variable vo2 = smapper.pushT(vi2.getType());

  1145                             final Variable vo1 = smapper.pushT(vi1.getType());

  1147                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1148                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1149                             emit(out, " @1 = @2, @3 = @4;",

  1150                                  vo5, vo1, vo6, vo2);

  1151                         }

  1152                     }

  1153                     break;

  1154                 }

  1155                 case opc_swap: {

  1156                     final Variable vi1 = smapper.get(0);

  1157                     final Variable vi2 = smapper.get(1);

  1159                     if (vi1.getType() == vi2.getType()) {

  1160                         final Variable tmp = smapper.pushT(vi1.getType());

  1162                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1163                              tmp, vi1, vi2);

  1164                         smapper.pop(1);

  1165                     } else {

  1166                         smapper.pop(2);

  1167                         smapper.pushT(vi1.getType());

  1168                         smapper.pushT(vi2.getType());

  1169                     }

  1170                     break;

  1171                 }

  1172                 case opc_bipush:

  1173                     emit(out, "var @1 = @2;",

  1174                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1175                     break;

  1176                 case opc_sipush:

  1177                     emit(out, "var @1 = @2;",

  1178                          smapper.pushI(),

  1179                          Integer.toString(readShortArg(byteCodes, i)));

  1180                     i += 2;

  1181                     break;

  1182                 case opc_getfield: {

  1183                     int indx = readUShortArg(byteCodes, i);

  1184                     String[] fi = jc.getFieldInfoName(indx);

  1185                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1186                     final String mangleClass = mangleSig(fi[0]);

  1187                     final String mangleClassAccess = accessClass(mangleClass);

  1188                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1189                          smapper.popA(),

  1190                          smapper.pushT(type), fi[1], mangleClassAccess

  1191                     );

  1192                     i += 2;

  1193                     break;

  1194                 }

  1195                 case opc_putfield: {

  1196                     int indx = readUShortArg(byteCodes, i);

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

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

  1199                     final String mangleClass = mangleSig(fi[0]);

  1200                     final String mangleClassAccess = accessClass(mangleClass);

  1201                     emit(out, "@4(false)._@3.call(@2, @1);",

  1202                          smapper.popT(type),

  1203                          smapper.popA(), fi[1],

  1204                          mangleClassAccess

  1205                     );

  1206                     i += 2;

  1207                     break;

  1208                 }

  1209                 case opc_getstatic: {

  1210                     int indx = readUShortArg(byteCodes, i);

  1211                     String[] fi = jc.getFieldInfoName(indx);

  1212                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1213                     emit(out, "var @1 = @2(false)._@3();",

  1214                          smapper.pushT(type),

  1215                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1216                     i += 2;

  1217                     addReference(fi[0]);

  1218                     break;

  1219                 }

  1220                 case opc_putstatic: {

  1221                     int indx = readUShortArg(byteCodes, i);

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

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

  1224                     emit(out, "@1(false)._@2(@3);",

  1225                          accessClass(fi[0].replace('/', '_')), fi[1],

  1226                          smapper.popT(type));

  1227                     i += 2;

  1228                     addReference(fi[0]);

  1229                     break;

  1230                 }

  1231                 case opc_checkcast: {

  1232                     int indx = readUShortArg(byteCodes, i);

  1233                     generateCheckcast(indx, smapper);

  1234                     i += 2;

  1235                     break;

  1236                 }

  1237                 case opc_instanceof: {

  1238                     int indx = readUShortArg(byteCodes, i);

  1239                     generateInstanceOf(indx, smapper);

  1240                     i += 2;

  1241                     break;

  1242                 }

  1243                 case opc_athrow: {

  1244                     final Variable v = smapper.popA();

  1245                     smapper.clear();

  1247                     emit(out, "{ var @1 = @2; throw @2; }",

  1248                          smapper.pushA(), v);

  1249                     break;

  1250                 }

  1252                 case opc_monitorenter: {

  1253                     out.append("/* monitor enter */");

  1254                     smapper.popA();

  1255                     break;

  1256                 }

  1258                 case opc_monitorexit: {

  1259                     out.append("/* monitor exit */");

  1260                     smapper.popA();

  1261                     break;

  1262                 }

  1264                 case opc_wide:

  1265                     wide = true;

  1266                     break;

  1268                 default: {

  1269                     wide = false;

  1270                     emit(out, "throw 'unknown bytecode @1';",

  1271                          Integer.toString(c));

  1272                 }

  1273             }

  1274             if (debug(" //")) {

  1275                 generateByteCodeComment(prev, i, byteCodes);

  1276             }

  1277             out.append("\n");

  1278         }

  1279         if (previousTrap != null) {

  1280             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1281         }

  1282         out.append("\n    }\n");

  1283         while (openBraces-- > 0) {

  1284             out.append('}');

  1285         }

  1286         out.append("\n};");

  1287     }

  1289     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1290         int indx = i + readShortArg(byteCodes, i);

  1291         out.append("if (").append(v1)

  1292            .append(' ').append(test).append(' ')

  1293            .append(v2).append(") ");

  1294         goTo(out, i, indx, topMostLabel);

  1295         return i + 2;

  1296     }

  1298     private int readInt4(byte[] byteCodes, int offset) {

  1299         final int d = byteCodes[offset + 0] << 24;

  1300         final int c = byteCodes[offset + 1] << 16;

  1301         final int b = byteCodes[offset + 2] << 8;

  1302         final int a = byteCodes[offset + 3];

  1303         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1304     }

  1305     private static int readUByte(byte[] byteCodes, int offset) {

  1306         return byteCodes[offset] & 0xff;

  1307     }

  1309     private static int readUShort(byte[] byteCodes, int offset) {

  1310         return ((byteCodes[offset] & 0xff) << 8)

  1311                     | (byteCodes[offset + 1] & 0xff);

  1312     }

  1313     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1314         return readUShort(byteCodes, offsetInstruction + 1);

  1315     }

  1317     private static int readShort(byte[] byteCodes, int offset) {

  1318         int signed = byteCodes[offset];

  1319         byte b0 = (byte)signed;

  1320         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1321     }

  1322     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1323         return readShort(byteCodes, offsetInstruction + 1);

  1324     }

  1326     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1327         int i = 0;

  1328         Boolean count = null;

  1329         boolean array = false;

  1330         sig.append("__");

  1331         int firstPos = sig.length();

  1332         while (i < descriptor.length()) {

  1333             char ch = descriptor.charAt(i++);

  1334             switch (ch) {

  1335                 case '(':

  1336                     count = true;

  1337                     continue;

  1338                 case ')':

  1339                     count = false;

  1340                     continue;

  1341                 case 'B':

  1342                 case 'C':

  1343                 case 'D':

  1344                 case 'F':

  1345                 case 'I':

  1346                 case 'J':

  1347                 case 'S':

  1348                 case 'Z':

  1349                     if (count) {

  1350                         if (array) {

  1351                             sig.append("_3");

  1352                         }

  1353                         sig.append(ch);

  1354                         if (ch == 'J' || ch == 'D') {

  1355                             cnt.append('1');

  1356                         } else {

  1357                             cnt.append('0');

  1358                         }

  1359                     } else {

  1360                         sig.insert(firstPos, ch);

  1361                         if (array) {

  1362                             returnType[0] = '[';

  1363                             sig.insert(firstPos, "_3");

  1364                         } else {

  1365                             returnType[0] = ch;

  1366                         }

  1367                     }

  1368                     array = false;

  1369                     continue;

  1370                 case 'V':

  1371                     assert !count;

  1372                     returnType[0] = 'V';

  1373                     sig.insert(firstPos, 'V');

  1374                     continue;

  1375                 case 'L':

  1376                     int next = descriptor.indexOf(';', i);

  1377                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1378                     if (count) {

  1379                         if (array) {

  1380                             sig.append("_3");

  1381                         }

  1382                         sig.append(realSig);

  1383                         cnt.append('0');

  1384                     } else {

  1385                         sig.insert(firstPos, realSig);

  1386                         if (array) {

  1387                             sig.insert(firstPos, "_3");

  1388                         }

  1389                         returnType[0] = 'L';

  1390                     }

  1391                     i = next + 1;

  1392                     array = false;

  1393                     continue;

  1394                 case '[':

  1395                     array = true;

  1396                     continue;

  1397                 default:

  1398                     throw new IllegalStateException("Invalid char: " + ch);

  1399             }

  1400         }

  1401     }

  1403     static String mangleSig(String sig) {

  1404         return mangleSig(sig, 0, sig.length());

  1405     }

  1407     private static String mangleSig(String txt, int first, int last) {

  1408         StringBuilder sb = new StringBuilder();

  1409         for (int i = first; i < last; i++) {

  1410             final char ch = txt.charAt(i);

  1411             switch (ch) {

  1412                 case '/': sb.append('_'); break;

  1413                 case '_': sb.append("_1"); break;

  1414                 case ';': sb.append("_2"); break;

  1415                 case '[': sb.append("_3"); break;

  1416                 default: sb.append(ch); break;

  1417             }

  1418         }

  1419         return sb.toString();

  1420     }

  1422     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1423         StringBuilder name = new StringBuilder();

  1424         if ("<init>".equals(m.getName())) { // NOI18N

  1425             name.append("cons"); // NOI18N

  1426         } else if ("<clinit>".equals(m.getName())) { // NOI18N

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

  1428         } else {

  1429             name.append(m.getName());

  1430         }

  1432         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1433         return name.toString();

  1434     }

  1436     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1437         StringBuilder name = new StringBuilder();

  1438         String descr = mi[2];//mi.getDescriptor();

  1439         String nm= mi[1];

  1440         if ("<init>".equals(nm)) { // NOI18N

  1441             name.append("cons"); // NOI18N

  1442         } else {

  1443             name.append(nm);

  1444         }

  1445         countArgs(descr, returnType, name, cnt);

  1446         return name.toString();

  1447     }

  1449     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1450     throws IOException {

  1451         int methodIndex = readUShortArg(byteCodes, i);

  1452         String[] mi = jc.getFieldInfoName(methodIndex);

  1453         char[] returnType = { 'V' };

  1454         StringBuilder cnt = new StringBuilder();

  1455         String mn = findMethodName(mi, cnt, returnType);

  1457         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1458         final Variable[] vars = new Variable[numArguments];

  1460         for (int j = numArguments - 1; j >= 0; --j) {

  1461             vars[j] = mapper.pop();

  1462         }

  1464         if (returnType[0] != 'V') {

  1465             out.append("var ")

  1466                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1467                .append(" = ");

  1468         }

  1470         final String in = mi[0];

  1471         out.append(accessClass(in.replace('/', '_')));

  1472         out.append("(false).");

  1473         if (mn.startsWith("cons_")) {

  1474             out.append("constructor.");

  1475         }

  1476         out.append(mn);

  1477         if (isStatic) {

  1478             out.append('(');

  1479         } else {

  1480             out.append(".call(");

  1481         }

  1482         if (numArguments > 0) {

  1483             out.append(vars[0]);

  1484             for (int j = 1; j < numArguments; ++j) {

  1485                 out.append(", ");

  1486                 out.append(vars[j]);

  1487             }

  1488         }

  1489         out.append(");");

  1490         i += 2;

  1491         addReference(in);

  1492         return i;

  1493     }

  1494     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1495     throws IOException {

  1496         int methodIndex = readUShortArg(byteCodes, i);

  1497         String[] mi = jc.getFieldInfoName(methodIndex);

  1498         char[] returnType = { 'V' };

  1499         StringBuilder cnt = new StringBuilder();

  1500         String mn = findMethodName(mi, cnt, returnType);

  1502         final int numArguments = cnt.length() + 1;

  1503         final Variable[] vars = new Variable[numArguments];

  1505         for (int j = numArguments - 1; j >= 0; --j) {

  1506             vars[j] = mapper.pop();

  1507         }

  1509         if (returnType[0] != 'V') {

  1510             out.append("var ")

  1511                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1512                .append(" = ");

  1513         }

  1515         out.append(vars[0]).append('.');

  1516         out.append(mn);

  1517         out.append('(');

  1518         String sep = "";

  1519         for (int j = 1; j < numArguments; ++j) {

  1520             out.append(sep);

  1521             out.append(vars[j]);

  1522             sep = ", ";

  1523         }

  1524         out.append(");");

  1525         i += 2;

  1526         return i;

  1527     }

  1529     private void addReference(String cn) throws IOException {

  1530         if (requireReference(cn)) {

  1531             debug(" /* needs " + cn + " */");

  1532         }

  1533     }

  1535     private void outType(String d, StringBuilder out) {

  1536         int arr = 0;

  1537         while (d.charAt(0) == '[') {

  1538             out.append('A');

  1539             d = d.substring(1);

  1540         }

  1541         if (d.charAt(0) == 'L') {

  1542             assert d.charAt(d.length() - 1) == ';';

  1543             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1544         } else {

  1545             out.append(d);

  1546         }

  1547     }

  1549     private String encodeConstant(int entryIndex) throws IOException {

  1550         String[] classRef = { null };

  1551         String s = jc.stringValue(entryIndex, classRef);

  1552         if (classRef[0] != null) {

  1553             if (classRef[0].startsWith("[")) {

  1554                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1555             } else {

  1556                 addReference(classRef[0]);

  1557                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1558             }

  1559         }

  1560         return s;

  1561     }

  1563     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1564         byte[] arr = m.findAnnotationData(true);

  1565         if (arr == null) {

  1566             return null;

  1567         }

  1568         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1569         class P extends AnnotationParser {

  1570             public P() {

  1571                 super(false, true);

  1572             }

  1574             int cnt;

  1575             String[] args = new String[30];

  1576             String body;

  1578             @Override

  1579             protected void visitAttr(String type, String attr, String at, String value) {

  1580                 if (type.equals(jvmType)) {

  1581                     if ("body".equals(attr)) {

  1582                         body = value;

  1583                     } else if ("args".equals(attr)) {

  1584                         args[cnt++] = value;

  1585                     } else {

  1586                         throw new IllegalArgumentException(attr);

  1587                     }

  1588                 }

  1589             }

  1590         }

  1591         P p = new P();

  1592         p.parse(arr, jc);

  1593         if (p.body == null) {

  1594             return null;

  1595         }

  1596         StringBuilder cnt = new StringBuilder();

  1597         final String mn = findMethodName(m, cnt);

  1598         out.append(destObject).append(".").append(mn);

  1599         out.append(" = function(");

  1600         String space = "";

  1601         int index = 0;

  1602         for (int i = 0; i < cnt.length(); i++) {

  1603             out.append(space);

  1604             space = outputArg(out, p.args, index);

  1605             index++;

  1606         }

  1607         out.append(") {").append("\n");

  1608         out.append(p.body);

  1609         out.append("\n}\n");

  1610         return mn;

  1611     }

  1612     private static String className(ClassData jc) {

  1613         //return jc.getName().getInternalName().replace('/', '_');

  1614         return jc.getClassName().replace('/', '_');

  1615     }

  1617     private static String[] findAnnotation(

  1618         byte[] arr, ClassData cd, final String className,

  1619         final String... attrNames

  1620     ) throws IOException {

  1621         if (arr == null) {

  1622             return null;

  1623         }

  1624         final String[] values = new String[attrNames.length];

  1625         final boolean[] found = { false };

  1626         final String jvmType = "L" + className.replace('.', '/') + ";";

  1627         AnnotationParser ap = new AnnotationParser(false, true) {

  1628             @Override

  1629             protected void visitAttr(String type, String attr, String at, String value) {

  1630                 if (type.equals(jvmType)) {

  1631                     found[0] = true;

  1632                     for (int i = 0; i < attrNames.length; i++) {

  1633                         if (attrNames[i].equals(attr)) {

  1634                             values[i] = value;

  1635                         }

  1636                     }

  1637                 }

  1638             }

  1640         };

  1641         ap.parse(arr, cd);

  1642         return found[0] ? values : null;

  1643     }

  1645     private CharSequence initField(FieldData v) {

  1646         final String is = v.getInternalSig();

  1647         if (is.length() == 1) {

  1648             switch (is.charAt(0)) {

  1649                 case 'S':

  1650                 case 'J':

  1651                 case 'B':

  1652                 case 'Z':

  1653                 case 'C':

  1654                 case 'I': return " = 0;";

  1655                 case 'F':

  1656                 case 'D': return " = 0.0;";

  1657                 default:

  1658                     throw new IllegalStateException(is);

  1659             }

  1660         }

  1661         return " = null;";

  1662     }

  1664     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1665         AnnotationParser ap = new AnnotationParser(true, false) {

  1666             int[] cnt = new int[32];

  1667             int depth;

  1669             @Override

  1670             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1671                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1672                 requireReference(slashType);

  1674                 if (cnt[depth]++ > 0) {

  1675                     out.append(",");

  1676                 }

  1677                 if (top) {

  1678                     out.append('"').append(attrType).append("\" : ");

  1679                 }

  1680                 out.append("{\n");

  1681                 cnt[++depth] = 0;

  1682             }

  1684             @Override

  1685             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1686                 out.append("\n}\n");

  1687                 depth--;

  1688             }

  1690             @Override

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

  1692                 if (cnt[depth]++ > 0) {

  1693                     out.append(",\n");

  1694                 }

  1695                 cnt[++depth] = 0;

  1696                 if (attrName != null) {

  1697                     out.append(attrName).append(" : ");

  1698                 }

  1699                 if (type == '[') {

  1700                     out.append("[");

  1701                 }

  1702             }

  1704             @Override

  1705             protected void visitValueEnd(String attrName, char type) throws IOException {

  1706                 if (type == '[') {

  1707                     out.append("]");

  1708                 }

  1709                 depth--;

  1710             }

  1712             @Override

  1713             protected void visitAttr(String type, String attr, String attrType, String value)

  1714             throws IOException {

  1715                 if (attr == null && value == null) {

  1716                     return;

  1717                 }

  1718                 out.append(value);

  1719             }

  1721             @Override

  1722             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1723             throws IOException {

  1724                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1725                 requireReference(slashType);

  1727                 out.append(accessClass(slashType.replace('/', '_')))

  1728                    .append("(false).constructor.").append(value);

  1729             }

  1730         };

  1731         ap.parse(data, cd);

  1732     }

  1734     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1735         final String name = args[indx];

  1736         if (name == null) {

  1737             return "";

  1738         }

  1739         if (name.contains(",")) {

  1740             throw new IOException("Wrong parameter with ',': " + name);

  1741         }

  1742         out.append(name);

  1743         return ",";

  1744     }

  1746     private static void emit(final Appendable out,

  1747                              final String format,

  1748                              final CharSequence... params) throws IOException {

  1749         final int length = format.length();

  1751         int processed = 0;

  1752         int paramOffset = format.indexOf('@');

  1753         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1754             final char paramChar = format.charAt(paramOffset + 1);

  1755             if ((paramChar >= '1') && (paramChar <= '9')) {

  1756                 final int paramIndex = paramChar - '0' - 1;

  1758                 out.append(format, processed, paramOffset);

  1759                 out.append(params[paramIndex]);

  1761                 ++paramOffset;

  1762                 processed = paramOffset + 1;

  1763             }

  1765             paramOffset = format.indexOf('@', paramOffset + 1);

  1766         }

  1768         out.append(format, processed, length);

  1769     }

  1771     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1772         out.append("} catch (e) {\n");

  1773         int finallyPC = -1;

  1774         for (TrapData e : traps) {

  1775             if (e == null) {

  1776                 break;

  1777             }

  1778             if (e.catch_cpx != 0) { //not finally

  1779                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1780                 addReference(classInternalName);

  1781                 if ("java/lang/Throwable".equals(classInternalName)) {

  1782                     out.append("if (e['$instOf_java_lang_Throwable']) {");

  1783                     out.append("  var stA0 = e;");

  1784                     out.append("} else {");

  1785                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1786                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1787                     out.append("}");

  1788                     goTo(out, current, e.handler_pc, topMostLabel);

  1789                 } else {

  1790                     out.append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  1791                     out.append("var stA0 = e;");

  1792                     goTo(out, current, e.handler_pc, topMostLabel);

  1793                     out.append("}\n");

  1794                 }

  1795             } else {

  1796                 finallyPC = e.handler_pc;

  1797             }

  1798         }

  1799         if (finallyPC == -1) {

  1800             out.append("throw e;");

  1801         } else {

  1802             out.append("var stA0 = e;");

  1803             goTo(out, current, finallyPC, topMostLabel);

  1804         }

  1805         out.append("\n}");

  1806     }

  1808     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1809         if (to < current) {

  1810             if (canBack < to) {

  1811                 out.append("{ gt = 0; continue X_" + to + "; }");

  1812             } else {

  1813                 out.append("{ gt = " + to + "; continue X_0; }");

  1814             }

  1815         } else {

  1816             out.append("{ gt = " + to + "; break IF; }");

  1817         }

  1818     }

  1820     private static void emitIf(

  1821         Appendable out, String pattern, Variable param,

  1822         int current, int to, int canBack

  1823     ) throws IOException {

  1824         emit(out, pattern, param);

  1825         goTo(out, current, to, canBack);

  1826     }

  1828     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1829         String jvmType;

  1830         switch (atype) {

  1831             case 4: jvmType = "[Z"; break;

  1832             case 5: jvmType = "[C"; break;

  1833             case 6: jvmType = "[F"; break;

  1834             case 7: jvmType = "[D"; break;

  1835             case 8: jvmType = "[B"; break;

  1836             case 9: jvmType = "[S"; break;

  1837             case 10: jvmType = "[I"; break;

  1838             case 11: jvmType = "[J"; break;

  1839             default: throw new IllegalStateException("Array type: " + atype);

  1840         }

  1841         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  1842              smapper.popI(), smapper.pushA(), jvmType);

  1843     }

  1845     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  1846         String typeName = jc.getClassName(type);

  1847         if (typeName.startsWith("[")) {

  1848             typeName = "[" + typeName;

  1849         } else {

  1850             typeName = "[L" + typeName + ";";

  1851         }

  1852         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  1853              smapper.popI(), smapper.pushA(), typeName);

  1854     }

  1856     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  1857         String typeName = jc.getClassName(type);

  1858         int dim = readUByte(byteCodes, ++i);

  1859         StringBuilder dims = new StringBuilder();

  1860         dims.append('[');

  1861         for (int d = 0; d < dim; d++) {

  1862             if (d != 0) {

  1863                 dims.insert(1, ",");

  1864             }

  1865             dims.insert(1, smapper.popI());

  1866         }

  1867         dims.append(']');

  1868         emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  1869              dims.toString(), smapper.pushA(), typeName);

  1870         return i;

  1871     }

  1873     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1874         int table = i / 4 * 4 + 4;

  1875         int dflt = i + readInt4(byteCodes, table);

  1876         table += 4;

  1877         int low = readInt4(byteCodes, table);

  1878         table += 4;

  1879         int high = readInt4(byteCodes, table);

  1880         table += 4;

  1881         out.append("switch (").append(smapper.popI()).append(") {\n");

  1882         while (low <= high) {

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

  1884             table += 4;

  1885             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  1886             low++;

  1887         }

  1888         out.append("  default: ");

  1889         goTo(out, i, dflt, topMostLabel);

  1890         out.append("\n}");

  1891         i = table - 1;

  1892         return i;

  1893     }

  1895     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1896         int table = i / 4 * 4 + 4;

  1897         int dflt = i + readInt4(byteCodes, table);

  1898         table += 4;

  1899         int n = readInt4(byteCodes, table);

  1900         table += 4;

  1901         out.append("switch (").append(smapper.popI()).append(") {\n");

  1902         while (n-- > 0) {

  1903             int cnstnt = readInt4(byteCodes, table);

  1904             table += 4;

  1905             int offset = i + readInt4(byteCodes, table);

  1906             table += 4;

  1907             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  1908         }

  1909         out.append("  default: ");

  1910         goTo(out, i, dflt, topMostLabel);

  1911         out.append("\n}");

  1912         i = table - 1;

  1913         return i;

  1914     }

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

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

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

  1919             emit(out, "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  1920                  smapper.popA(), smapper.pushI(),

  1921                  type.replace('/', '_'));

  1922         } else {

  1923             emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1924                 smapper.popA(), smapper.pushI(),

  1925                 type

  1926             );

  1927         }

  1928     }

  1930     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  1931         final String type = jc.getClassName(indx);

  1932         if (!type.startsWith("[")) {

  1933             emit(out,

  1934                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  1935                  smapper.getA(0), type.replace('/', '_'));

  1936         } else {

  1937             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);",

  1938                  smapper.getA(0), type

  1939             );

  1940         }

  1941     }

  1943     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  1944         for (int j = prev; j <= i; j++) {

  1945             out.append(" ");

  1946             final int cc = readUByte(byteCodes, j);

  1947             out.append(Integer.toString(cc));

  1948         }

  1949     }

  1950 }

author	Lubomir Nerad <lubomir.nerad@oracle.com>
	Fri, 03 May 2013 18:15:47 +0200
branch	closure
changeset 1082	977cc6141083
parent 1029	b1fe994d4267
child 1083	9d6130cb464f
permissions	-rw-r--r--