hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@a6bacea2518f

     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;

    31     final ObfuscationDelegate obfuscationDelegate;

    33     protected ByteCodeToJavaScript(

    34             Appendable out, ObfuscationDelegate obfuscationDelegate) {

    35         this.out = out;

    36         this.obfuscationDelegate = obfuscationDelegate;

    37     }

    39     /* Collects additional required resources.

    40      *

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

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

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

    44      */

    45     protected abstract boolean requireReference(String internalClassName);

    47     /*

    48      * @param resourcePath name of resources to read

    49      */

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

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

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

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

    55      *

    56      * @param className suggested name of the class

    57      */

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

    59         return className + " = ";

    60     }

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

    62         return classOperation;

    63     }

    65     abstract String getExportsObject();

    67     /** Prints out a debug message.

    68      *

    69      * @param msg the message

    70      * @return true if the message has been printed

    71      * @throws IOException

    72      */

    73     boolean debug(String msg) throws IOException {

    74         out.append(msg);

    75         return true;

    76     }

    78     /**

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

    80      *

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

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

    83      *

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

    85      */

    87     public String compile(InputStream classFile) throws IOException {

    88         this.jc = new ClassData(classFile);

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

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

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

    92             );

    93         }

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

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

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

    97             "resource", "processByteCode"

    98         );

    99         if (arr != null) {

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

   101                 requireScript(arr[0]);

   102             }

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

   104                 return null;

   105             }

   106         }

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

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

   109             "container", "prototype"

   110         );

   111         StringArray toInitilize = new StringArray();

   112         final String className = className(jc);

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

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

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

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

   117         if (proto == null) {

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

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

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

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

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

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

   124         } else {

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

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

   127                 proto[0] = "p";

   128             }

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

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

   131         }

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

   133             if (v.isStatic()) {

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

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

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

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

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

   139             } else {

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

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

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

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

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

   145                    .append("; };");

   146             }

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

   149         }

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

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

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

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

   154                 "name", "value"

   155             );

   156             if (only != null) {

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

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

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

   160                 }

   161                 continue;

   162             }

   163             String destObject;

   164             String mn;

   165             out.append("\n    ");

   166             if (m.isStatic()) {

   167                 destObject = "c";

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

   169             } else {

   170                 if (m.isConstructor()) {

   171                     destObject = "CLS";

   172                     mn = generateInstanceMethod(destObject, m);

   173                 } else {

   174                     destObject = "c";

   175                     mn = generateInstanceMethod(destObject, m);

   176                 }

   177             }

   178             obfuscationDelegate.exportMethod(out, destObject, mn, m);

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

   180             if (runAnno != null) {

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

   182                 generateAnno(jc, out, runAnno);

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

   184             }

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

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

   187         }

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

   189         String instOfName = "$instOf_" + className;

   190         out.append("\n    c.").append(instOfName).append(" = true;");

   191         obfuscationDelegate.exportJSProperty(out, "c", instOfName);

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

   193             instOfName = "$instOf_" + superInterface.replace('/', '_');

   194             out.append("\n    c.").append(instOfName).append(" = true;");

   195             obfuscationDelegate.exportJSProperty(out, "c", instOfName);

   196         }

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

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

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

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

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

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

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

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

   205         if (classAnno != null) {

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

   207             generateAnno(jc, out, classAnno);

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

   209         }

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

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

   212         }

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

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

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

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

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

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

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

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

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

   222                 "name", "value"

   223             );

   224             if (only != null) {

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

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

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

   228                 }

   229                 continue;

   230             }

   231             if (!v.isStatic()) {

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

   233                     append(className).append('_').

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

   235             }

   236         }

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

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

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

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

   242         obfuscationDelegate.exportClass(out, getExportsObject(), className, jc);

   244 //        StringBuilder sb = new StringBuilder();

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

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

   247 //        }

   248         return "";

   249     }

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

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

   252         if (jsb != null) {

   253             return jsb;

   254         }

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

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

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

   258         }

   259         generateMethod(destObject, mn, m);

   260         return mn;

   261     }

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

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

   265         if (jsb != null) {

   266             return jsb;

   267         }

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

   269         generateMethod(destObject, mn, m);

   270         return mn;

   271     }

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

   274             throws IOException {

   275         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   276         TrapDataIterator trap = m.getTrapDataIterator();

   277         final LocalsMapper lmapper =

   278                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   285         if (byteCodes == null) {

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

   287                .append(jc.getClassName()).append('.')

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

   289             out.append("};");

   290             return;

   291         }

   293         final StackMapper smapper = new StackMapper();

   295         if (!m.isStatic()) {

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

   297         }

   299         int lastStackFrame = -1;

   300         TrapData[] previousTrap = null;

   301         boolean wide = false;

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

   304         int openBraces = 0;

   305         int topMostLabel = 0;

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

   307             int prev = i;

   308             stackMapIterator.advanceTo(i);

   309             boolean changeInCatch = trap.advanceTo(i);

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

   311                 if (previousTrap != null) {

   312                     generateCatch(previousTrap, i, topMostLabel);

   313                     previousTrap = null;

   314                 }

   315             }

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

   317                 if (i != 0) {

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

   319                 }

   320                 if (openBraces > 64) {

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

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

   323                     }

   324                     openBraces = 1;

   325                     topMostLabel = i;

   326                 }

   328                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   332                 openBraces++;

   333                 changeInCatch = true;

   334             } else {

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

   336             }

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

   338                 out.append("try {");

   339                 previousTrap = trap.current();

   340             }

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

   342             switch (c) {

   343                 case opc_aload_0:

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

   345                     break;

   346                 case opc_iload_0:

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

   348                     break;

   349                 case opc_lload_0:

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

   351                     break;

   352                 case opc_fload_0:

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

   354                     break;

   355                 case opc_dload_0:

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

   357                     break;

   358                 case opc_aload_1:

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

   360                     break;

   361                 case opc_iload_1:

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

   363                     break;

   364                 case opc_lload_1:

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

   366                     break;

   367                 case opc_fload_1:

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

   369                     break;

   370                 case opc_dload_1:

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

   372                     break;

   373                 case opc_aload_2:

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

   375                     break;

   376                 case opc_iload_2:

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

   378                     break;

   379                 case opc_lload_2:

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

   381                     break;

   382                 case opc_fload_2:

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

   384                     break;

   385                 case opc_dload_2:

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

   387                     break;

   388                 case opc_aload_3:

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

   390                     break;

   391                 case opc_iload_3:

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

   393                     break;

   394                 case opc_lload_3:

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

   396                     break;

   397                 case opc_fload_3:

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

   399                     break;

   400                 case opc_dload_3:

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

   402                     break;

   403                 case opc_iload: {

   404                     ++i;

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

   406                                           : readUByte(byteCodes, i);

   407                     wide = false;

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

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

   410                     break;

   411                 }

   412                 case opc_lload: {

   413                     ++i;

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

   415                                           : readUByte(byteCodes, i);

   416                     wide = false;

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

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

   419                     break;

   420                 }

   421                 case opc_fload: {

   422                     ++i;

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

   424                                           : readUByte(byteCodes, i);

   425                     wide = false;

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

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

   428                     break;

   429                 }

   430                 case opc_dload: {

   431                     ++i;

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

   433                                           : readUByte(byteCodes, i);

   434                     wide = false;

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

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

   437                     break;

   438                 }

   439                 case opc_aload: {

   440                     ++i;

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

   442                                           : readUByte(byteCodes, i);

   443                     wide = false;

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

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

   446                     break;

   447                 }

   448                 case opc_istore: {

   449                     ++i;

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

   451                                           : readUByte(byteCodes, i);

   452                     wide = false;

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

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

   455                     break;

   456                 }

   457                 case opc_lstore: {

   458                     ++i;

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

   460                                           : readUByte(byteCodes, i);

   461                     wide = false;

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

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

   464                     break;

   465                 }

   466                 case opc_fstore: {

   467                     ++i;

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

   469                                           : readUByte(byteCodes, i);

   470                     wide = false;

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

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

   473                     break;

   474                 }

   475                 case opc_dstore: {

   476                     ++i;

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

   478                                           : readUByte(byteCodes, i);

   479                     wide = false;

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

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

   482                     break;

   483                 }

   484                 case opc_astore: {

   485                     ++i;

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

   487                                           : readUByte(byteCodes, i);

   488                     wide = false;

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

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

   491                     break;

   492                 }

   493                 case opc_astore_0:

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

   495                     break;

   496                 case opc_istore_0:

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

   498                     break;

   499                 case opc_lstore_0:

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

   501                     break;

   502                 case opc_fstore_0:

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

   504                     break;

   505                 case opc_dstore_0:

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

   507                     break;

   508                 case opc_astore_1:

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

   510                     break;

   511                 case opc_istore_1:

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

   513                     break;

   514                 case opc_lstore_1:

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

   516                     break;

   517                 case opc_fstore_1:

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

   519                     break;

   520                 case opc_dstore_1:

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

   522                     break;

   523                 case opc_astore_2:

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

   525                     break;

   526                 case opc_istore_2:

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

   528                     break;

   529                 case opc_lstore_2:

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

   531                     break;

   532                 case opc_fstore_2:

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

   534                     break;

   535                 case opc_dstore_2:

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

   537                     break;

   538                 case opc_astore_3:

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

   540                     break;

   541                 case opc_istore_3:

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

   543                     break;

   544                 case opc_lstore_3:

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

   546                     break;

   547                 case opc_fstore_3:

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

   549                     break;

   550                 case opc_dstore_3:

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

   552                     break;

   553                 case opc_iadd:

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

   555                     break;

   556                 case opc_ladd:

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

   558                     break;

   559                 case opc_fadd:

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

   561                     break;

   562                 case opc_dadd:

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

   564                     break;

   565                 case opc_isub:

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

   567                     break;

   568                 case opc_lsub:

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

   570                     break;

   571                 case opc_fsub:

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

   573                     break;

   574                 case opc_dsub:

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

   576                     break;

   577                 case opc_imul:

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

   579                     break;

   580                 case opc_lmul:

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

   582                     break;

   583                 case opc_fmul:

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

   585                     break;

   586                 case opc_dmul:

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

   588                     break;

   589                 case opc_idiv:

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

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

   592                     break;

   593                 case opc_ldiv:

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

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

   596                     break;

   597                 case opc_fdiv:

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

   599                     break;

   600                 case opc_ddiv:

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

   602                     break;

   603                 case opc_irem:

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

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

   606                     break;

   607                 case opc_lrem:

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

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

   610                     break;

   611                 case opc_frem:

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

   613                     break;

   614                 case opc_drem:

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

   616                     break;

   617                 case opc_iand:

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

   619                     break;

   620                 case opc_land:

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

   622                     break;

   623                 case opc_ior:

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

   625                     break;

   626                 case opc_lor:

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

   628                     break;

   629                 case opc_ixor:

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

   631                     break;

   632                 case opc_lxor:

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

   634                     break;

   635                 case opc_ineg:

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

   637                     break;

   638                 case opc_lneg:

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

   640                     break;

   641                 case opc_fneg:

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

   643                     break;

   644                 case opc_dneg:

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

   646                     break;

   647                 case opc_ishl:

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

   649                     break;

   650                 case opc_lshl:

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

   652                     break;

   653                 case opc_ishr:

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

   655                     break;

   656                 case opc_lshr:

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

   658                     break;

   659                 case opc_iushr:

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

   661                     break;

   662                 case opc_lushr:

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

   664                     break;

   665                 case opc_iinc: {

   666                     ++i;

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

   668                                              : readUByte(byteCodes, i);

   669                     ++i;

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

   671                                             : byteCodes[i];

   672                     wide = false;

   673                     if (incrBy == 1) {

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

   675                     } else {

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

   677                              lmapper.getI(varIndx),

   678                              Integer.toString(incrBy));

   679                     }

   680                     break;

   681                 }

   682                 case opc_return:

   683                     emit(out, "return;");

   684                     break;

   685                 case opc_ireturn:

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

   687                     break;

   688                 case opc_lreturn:

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

   690                     break;

   691                 case opc_freturn:

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

   693                     break;

   694                 case opc_dreturn:

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

   696                     break;

   697                 case opc_areturn:

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

   699                     break;

   700                 case opc_i2l:

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

   702                     break;

   703                 case opc_i2f:

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

   705                     break;

   706                 case opc_i2d:

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

   708                     break;

   709                 case opc_l2i:

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

   711                     break;

   712                     // max int check?

   713                 case opc_l2f:

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

   715                     break;

   716                 case opc_l2d:

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

   718                     break;

   719                 case opc_f2d:

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

   721                     break;

   722                 case opc_d2f:

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

   724                     break;

   725                 case opc_f2i:

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

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

   728                     break;

   729                 case opc_f2l:

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

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

   732                     break;

   733                 case opc_d2i:

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

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

   736                     break;

   737                 case opc_d2l:

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

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

   740                     break;

   741                 case opc_i2b:

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

   743                     break;

   744                 case opc_i2c:

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

   746                     break;

   747                 case opc_i2s:

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

   749                     break;

   750                 case opc_aconst_null:

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

   752                     break;

   753                 case opc_iconst_m1:

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

   755                     break;

   756                 case opc_iconst_0:

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

   758                     break;

   759                 case opc_dconst_0:

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

   761                     break;

   762                 case opc_lconst_0:

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

   764                     break;

   765                 case opc_fconst_0:

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

   767                     break;

   768                 case opc_iconst_1:

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

   770                     break;

   771                 case opc_lconst_1:

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

   773                     break;

   774                 case opc_fconst_1:

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

   776                     break;

   777                 case opc_dconst_1:

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

   779                     break;

   780                 case opc_iconst_2:

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

   782                     break;

   783                 case opc_fconst_2:

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

   785                     break;

   786                 case opc_iconst_3:

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

   788                     break;

   789                 case opc_iconst_4:

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

   791                     break;

   792                 case opc_iconst_5:

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

   794                     break;

   795                 case opc_ldc: {

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

   797                     String v = encodeConstant(indx);

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

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

   800                     break;

   801                 }

   802                 case opc_ldc_w:

   803                 case opc_ldc2_w: {

   804                     int indx = readUShortArg(byteCodes, i);

   805                     i += 2;

   806                     String v = encodeConstant(indx);

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

   808                     if (type == VarType.LONG) {

   809                         final Long lv = new Long(v);

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

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

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

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

   814                     } else {

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

   816                     }

   817                     break;

   818                 }

   819                 case opc_lcmp:

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

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

   822                     break;

   823                 case opc_fcmpl:

   824                 case opc_fcmpg:

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

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

   827                     break;

   828                 case opc_dcmpl:

   829                 case opc_dcmpg:

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

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

   832                     break;

   833                 case opc_if_acmpeq:

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

   835                                    "===", topMostLabel);

   836                     break;

   837                 case opc_if_acmpne:

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

   839                                    "!==", topMostLabel);

   840                     break;

   841                 case opc_if_icmpeq:

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

   843                                    "==", topMostLabel);

   844                     break;

   845                 case opc_ifeq: {

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

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

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

   849                     i += 2;

   850                     break;

   851                 }

   852                 case opc_ifne: {

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

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

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

   856                     i += 2;

   857                     break;

   858                 }

   859                 case opc_iflt: {

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

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

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

   863                     i += 2;

   864                     break;

   865                 }

   866                 case opc_ifle: {

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

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

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

   870                     i += 2;

   871                     break;

   872                 }

   873                 case opc_ifgt: {

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

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

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

   877                     i += 2;

   878                     break;

   879                 }

   880                 case opc_ifge: {

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

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

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

   884                     i += 2;

   885                     break;

   886                 }

   887                 case opc_ifnonnull: {

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

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

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

   891                     i += 2;

   892                     break;

   893                 }

   894                 case opc_ifnull: {

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

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

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

   898                     i += 2;

   899                     break;

   900                 }

   901                 case opc_if_icmpne:

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

   903                                    "!=", topMostLabel);

   904                     break;

   905                 case opc_if_icmplt:

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

   907                                    "<", topMostLabel);

   908                     break;

   909                 case opc_if_icmple:

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

   911                                    "<=", topMostLabel);

   912                     break;

   913                 case opc_if_icmpgt:

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

   915                                    ">", topMostLabel);

   916                     break;

   917                 case opc_if_icmpge:

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

   919                                    ">=", topMostLabel);

   920                     break;

   921                 case opc_goto: {

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

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

   924                     i += 2;

   925                     break;

   926                 }

   927                 case opc_lookupswitch: {

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

   929                     break;

   930                 }

   931                 case opc_tableswitch: {

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

   933                     break;

   934                 }

   935                 case opc_invokeinterface: {

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

   937                     break;

   938                 }

   939                 case opc_invokevirtual:

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

   941                     break;

   942                 case opc_invokespecial:

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

   944                     break;

   945                 case opc_invokestatic:

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

   947                     break;

   948                 case opc_new: {

   949                     int indx = readUShortArg(byteCodes, i);

   950                     String ci = jc.getClassName(indx);

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

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

   953                     addReference(ci);

   954                     i += 2;

   955                     break;

   956                 }

   957                 case opc_newarray:

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

   959                     generateNewArray(atype, smapper);

   960                     break;

   961                 case opc_anewarray: {

   962                     int type = readUShortArg(byteCodes, i);

   963                     i += 2;

   964                     generateANewArray(type, smapper);

   965                     break;

   966                 }

   967                 case opc_multianewarray: {

   968                     int type = readUShortArg(byteCodes, i);

   969                     i += 2;

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

   971                     break;

   972                 }

   973                 case opc_arraylength:

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

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

   976                     break;

   977                 case opc_lastore:

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

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

   980                     break;

   981                 case opc_fastore:

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

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

   984                     break;

   985                 case opc_dastore:

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

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

   988                     break;

   989                 case opc_aastore:

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

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

   992                     break;

   993                 case opc_iastore:

   994                 case opc_bastore:

   995                 case opc_castore:

   996                 case opc_sastore:

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

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

   999                     break;

  1000                 case opc_laload:

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

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

  1003                     break;

  1004                 case opc_faload:

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

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

  1007                     break;

  1008                 case opc_daload:

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

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

  1011                     break;

  1012                 case opc_aaload:

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

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

  1015                     break;

  1016                 case opc_iaload:

  1017                 case opc_baload:

  1018                 case opc_caload:

  1019                 case opc_saload:

  1020                     emit(out, "var @3 = @2.at(@1);",

  1021                          smapper.popI(), smapper.popA(), smapper.pushI());

  1022                     break;

  1023                 case opc_pop:

  1024                 case opc_pop2:

  1025                     smapper.pop(1);

  1026                     debug("/* pop */");

  1027                     break;

  1028                 case opc_dup: {

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

  1030                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1031                     break;

  1032                 }

  1033                 case opc_dup2: {

  1034                     final Variable vi1 = smapper.get(0);

  1036                     if (vi1.isCategory2()) {

  1037                         emit(out, "var @1 = @2;",

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

  1039                     } else {

  1040                         final Variable vi2 = smapper.get(1);

  1041                         emit(out, "var @1 = @2, @3 = @4;",

  1042                              smapper.pushT(vi2.getType()), vi2,

  1043                              smapper.pushT(vi1.getType()), vi1);

  1044                     }

  1045                     break;

  1046                 }

  1047                 case opc_dup_x1: {

  1048                     final Variable vi1 = smapper.pop();

  1049                     final Variable vi2 = smapper.pop();

  1050                     final Variable vo3 = smapper.pushT(vi1.getType());

  1051                     final Variable vo2 = smapper.pushT(vi2.getType());

  1052                     final Variable vo1 = smapper.pushT(vi1.getType());

  1054                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1055                          vo1, vi1, vo2, vi2, vo3, vo1);

  1056                     break;

  1057                 }

  1058                 case opc_dup2_x1: {

  1059                     final Variable vi1 = smapper.pop();

  1060                     final Variable vi2 = smapper.pop();

  1062                     if (vi1.isCategory2()) {

  1063                         final Variable vo3 = smapper.pushT(vi1.getType());

  1064                         final Variable vo2 = smapper.pushT(vi2.getType());

  1065                         final Variable vo1 = smapper.pushT(vi1.getType());

  1067                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1068                              vo1, vi1, vo2, vi2, vo3, vo1);

  1069                     } else {

  1070                         final Variable vi3 = smapper.pop();

  1071                         final Variable vo5 = smapper.pushT(vi2.getType());

  1072                         final Variable vo4 = smapper.pushT(vi1.getType());

  1073                         final Variable vo3 = smapper.pushT(vi3.getType());

  1074                         final Variable vo2 = smapper.pushT(vi2.getType());

  1075                         final Variable vo1 = smapper.pushT(vi1.getType());

  1077                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1078                              vo1, vi1, vo2, vi2, vo3, vi3);

  1079                         emit(out, " @1 = @2, @3 = @4;",

  1080                              vo4, vo1, vo5, vo2);

  1081                     }

  1082                     break;

  1083                 }

  1084                 case opc_dup_x2: {

  1085                     final Variable vi1 = smapper.pop();

  1086                     final Variable vi2 = smapper.pop();

  1088                     if (vi2.isCategory2()) {

  1089                         final Variable vo3 = smapper.pushT(vi1.getType());

  1090                         final Variable vo2 = smapper.pushT(vi2.getType());

  1091                         final Variable vo1 = smapper.pushT(vi1.getType());

  1093                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1094                              vo1, vi1, vo2, vi2, vo3, vo1);

  1095                     } else {

  1096                         final Variable vi3 = smapper.pop();

  1097                         final Variable vo4 = smapper.pushT(vi1.getType());

  1098                         final Variable vo3 = smapper.pushT(vi3.getType());

  1099                         final Variable vo2 = smapper.pushT(vi2.getType());

  1100                         final Variable vo1 = smapper.pushT(vi1.getType());

  1102                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1103                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1104                     }

  1105                     break;

  1106                 }

  1107                 case opc_dup2_x2: {

  1108                     final Variable vi1 = smapper.pop();

  1109                     final Variable vi2 = smapper.pop();

  1111                     if (vi1.isCategory2()) {

  1112                         if (vi2.isCategory2()) {

  1113                             final Variable vo3 = smapper.pushT(vi1.getType());

  1114                             final Variable vo2 = smapper.pushT(vi2.getType());

  1115                             final Variable vo1 = smapper.pushT(vi1.getType());

  1117                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1118                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1119                         } else {

  1120                             final Variable vi3 = smapper.pop();

  1121                             final Variable vo4 = smapper.pushT(vi1.getType());

  1122                             final Variable vo3 = smapper.pushT(vi3.getType());

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

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

  1126                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1127                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1128                         }

  1129                     } else {

  1130                         final Variable vi3 = smapper.pop();

  1132                         if (vi3.isCategory2()) {

  1133                             final Variable vo5 = smapper.pushT(vi2.getType());

  1134                             final Variable vo4 = smapper.pushT(vi1.getType());

  1135                             final Variable vo3 = smapper.pushT(vi3.getType());

  1136                             final Variable vo2 = smapper.pushT(vi2.getType());

  1137                             final Variable vo1 = smapper.pushT(vi1.getType());

  1139                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1140                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1141                             emit(out, " @1 = @2, @3 = @4;",

  1142                                  vo4, vo1, vo5, vo2);

  1143                         } else {

  1144                             final Variable vi4 = smapper.pop();

  1145                             final Variable vo6 = smapper.pushT(vi2.getType());

  1146                             final Variable vo5 = smapper.pushT(vi1.getType());

  1147                             final Variable vo4 = smapper.pushT(vi4.getType());

  1148                             final Variable vo3 = smapper.pushT(vi3.getType());

  1149                             final Variable vo2 = smapper.pushT(vi2.getType());

  1150                             final Variable vo1 = smapper.pushT(vi1.getType());

  1152                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1153                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1154                             emit(out, " @1 = @2, @3 = @4;",

  1155                                  vo5, vo1, vo6, vo2);

  1156                         }

  1157                     }

  1158                     break;

  1159                 }

  1160                 case opc_swap: {

  1161                     final Variable vi1 = smapper.get(0);

  1162                     final Variable vi2 = smapper.get(1);

  1164                     if (vi1.getType() == vi2.getType()) {

  1165                         final Variable tmp = smapper.pushT(vi1.getType());

  1167                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1168                              tmp, vi1, vi2);

  1169                         smapper.pop(1);

  1170                     } else {

  1171                         smapper.pop(2);

  1172                         smapper.pushT(vi1.getType());

  1173                         smapper.pushT(vi2.getType());

  1174                     }

  1175                     break;

  1176                 }

  1177                 case opc_bipush:

  1178                     emit(out, "var @1 = @2;",

  1179                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1180                     break;

  1181                 case opc_sipush:

  1182                     emit(out, "var @1 = @2;",

  1183                          smapper.pushI(),

  1184                          Integer.toString(readShortArg(byteCodes, i)));

  1185                     i += 2;

  1186                     break;

  1187                 case opc_getfield: {

  1188                     int indx = readUShortArg(byteCodes, i);

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

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

  1191                     final String mangleClass = mangleSig(fi[0]);

  1192                     final String mangleClassAccess = accessClass(mangleClass);

  1193                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1194                          smapper.popA(),

  1195                          smapper.pushT(type), fi[1], mangleClassAccess

  1196                     );

  1197                     i += 2;

  1198                     break;

  1199                 }

  1200                 case opc_putfield: {

  1201                     int indx = readUShortArg(byteCodes, i);

  1202                     String[] fi = jc.getFieldInfoName(indx);

  1203                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1204                     final String mangleClass = mangleSig(fi[0]);

  1205                     final String mangleClassAccess = accessClass(mangleClass);

  1206                     emit(out, "@4(false)._@3.call(@2, @1);",

  1207                          smapper.popT(type),

  1208                          smapper.popA(), fi[1],

  1209                          mangleClassAccess

  1210                     );

  1211                     i += 2;

  1212                     break;

  1213                 }

  1214                 case opc_getstatic: {

  1215                     int indx = readUShortArg(byteCodes, i);

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

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

  1218                     emit(out, "var @1 = @2(false)._@3();",

  1219                          smapper.pushT(type),

  1220                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1221                     i += 2;

  1222                     addReference(fi[0]);

  1223                     break;

  1224                 }

  1225                 case opc_putstatic: {

  1226                     int indx = readUShortArg(byteCodes, i);

  1227                     String[] fi = jc.getFieldInfoName(indx);

  1228                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1229                     emit(out, "@1(false)._@2(@3);",

  1230                          accessClass(fi[0].replace('/', '_')), fi[1],

  1231                          smapper.popT(type));

  1232                     i += 2;

  1233                     addReference(fi[0]);

  1234                     break;

  1235                 }

  1236                 case opc_checkcast: {

  1237                     int indx = readUShortArg(byteCodes, i);

  1238                     generateCheckcast(indx, smapper);

  1239                     i += 2;

  1240                     break;

  1241                 }

  1242                 case opc_instanceof: {

  1243                     int indx = readUShortArg(byteCodes, i);

  1244                     generateInstanceOf(indx, smapper);

  1245                     i += 2;

  1246                     break;

  1247                 }

  1248                 case opc_athrow: {

  1249                     final Variable v = smapper.popA();

  1250                     smapper.clear();

  1252                     emit(out, "{ var @1 = @2; throw @2; }",

  1253                          smapper.pushA(), v);

  1254                     break;

  1255                 }

  1257                 case opc_monitorenter: {

  1258                     out.append("/* monitor enter */");

  1259                     smapper.popA();

  1260                     break;

  1261                 }

  1263                 case opc_monitorexit: {

  1264                     out.append("/* monitor exit */");

  1265                     smapper.popA();

  1266                     break;

  1267                 }

  1269                 case opc_wide:

  1270                     wide = true;

  1271                     break;

  1273                 default: {

  1274                     wide = false;

  1275                     emit(out, "throw 'unknown bytecode @1';",

  1276                          Integer.toString(c));

  1277                 }

  1278             }

  1279             if (debug(" //")) {

  1280                 generateByteCodeComment(prev, i, byteCodes);

  1281             }

  1282             out.append("\n");

  1283         }

  1284         if (previousTrap != null) {

  1285             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1286         }

  1287         out.append("\n    }\n");

  1288         while (openBraces-- > 0) {

  1289             out.append('}');

  1290         }

  1291         out.append("\n};");

  1292     }

  1294     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1295         int indx = i + readShortArg(byteCodes, i);

  1296         out.append("if (").append(v1)

  1297            .append(' ').append(test).append(' ')

  1298            .append(v2).append(") ");

  1299         goTo(out, i, indx, topMostLabel);

  1300         return i + 2;

  1301     }

  1303     private int readInt4(byte[] byteCodes, int offset) {

  1304         final int d = byteCodes[offset + 0] << 24;

  1305         final int c = byteCodes[offset + 1] << 16;

  1306         final int b = byteCodes[offset + 2] << 8;

  1307         final int a = byteCodes[offset + 3];

  1308         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1309     }

  1310     private static int readUByte(byte[] byteCodes, int offset) {

  1311         return byteCodes[offset] & 0xff;

  1312     }

  1314     private static int readUShort(byte[] byteCodes, int offset) {

  1315         return ((byteCodes[offset] & 0xff) << 8)

  1316                     | (byteCodes[offset + 1] & 0xff);

  1317     }

  1318     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1319         return readUShort(byteCodes, offsetInstruction + 1);

  1320     }

  1322     private static int readShort(byte[] byteCodes, int offset) {

  1323         int signed = byteCodes[offset];

  1324         byte b0 = (byte)signed;

  1325         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1326     }

  1327     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1328         return readShort(byteCodes, offsetInstruction + 1);

  1329     }

  1331     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1332         int i = 0;

  1333         Boolean count = null;

  1334         boolean array = false;

  1335         sig.append("__");

  1336         int firstPos = sig.length();

  1337         while (i < descriptor.length()) {

  1338             char ch = descriptor.charAt(i++);

  1339             switch (ch) {

  1340                 case '(':

  1341                     count = true;

  1342                     continue;

  1343                 case ')':

  1344                     count = false;

  1345                     continue;

  1346                 case 'B':

  1347                 case 'C':

  1348                 case 'D':

  1349                 case 'F':

  1350                 case 'I':

  1351                 case 'J':

  1352                 case 'S':

  1353                 case 'Z':

  1354                     if (count) {

  1355                         if (array) {

  1356                             sig.append("_3");

  1357                         }

  1358                         sig.append(ch);

  1359                         if (ch == 'J' || ch == 'D') {

  1360                             cnt.append('1');

  1361                         } else {

  1362                             cnt.append('0');

  1363                         }

  1364                     } else {

  1365                         sig.insert(firstPos, ch);

  1366                         if (array) {

  1367                             returnType[0] = '[';

  1368                             sig.insert(firstPos, "_3");

  1369                         } else {

  1370                             returnType[0] = ch;

  1371                         }

  1372                     }

  1373                     array = false;

  1374                     continue;

  1375                 case 'V':

  1376                     assert !count;

  1377                     returnType[0] = 'V';

  1378                     sig.insert(firstPos, 'V');

  1379                     continue;

  1380                 case 'L':

  1381                     int next = descriptor.indexOf(';', i);

  1382                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1383                     if (count) {

  1384                         if (array) {

  1385                             sig.append("_3");

  1386                         }

  1387                         sig.append(realSig);

  1388                         cnt.append('0');

  1389                     } else {

  1390                         sig.insert(firstPos, realSig);

  1391                         if (array) {

  1392                             sig.insert(firstPos, "_3");

  1393                         }

  1394                         returnType[0] = 'L';

  1395                     }

  1396                     i = next + 1;

  1397                     array = false;

  1398                     continue;

  1399                 case '[':

  1400                     array = true;

  1401                     continue;

  1402                 default:

  1403                     throw new IllegalStateException("Invalid char: " + ch);

  1404             }

  1405         }

  1406     }

  1408     static String mangleSig(String sig) {

  1409         return mangleSig(sig, 0, sig.length());

  1410     }

  1412     private static String mangleSig(String txt, int first, int last) {

  1413         StringBuilder sb = new StringBuilder();

  1414         for (int i = first; i < last; i++) {

  1415             final char ch = txt.charAt(i);

  1416             switch (ch) {

  1417                 case '/': sb.append('_'); break;

  1418                 case '_': sb.append("_1"); break;

  1419                 case ';': sb.append("_2"); break;

  1420                 case '[': sb.append("_3"); break;

  1421                 default: sb.append(ch); break;

  1422             }

  1423         }

  1424         return sb.toString();

  1425     }

  1427     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1428         StringBuilder name = new StringBuilder();

  1429         if ("<init>".equals(m.getName())) { // NOI18N

  1430             name.append("cons"); // NOI18N

  1431         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1432             name.append("class"); // NOI18N

  1433         } else {

  1434             name.append(m.getName());

  1435         }

  1437         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1438         return name.toString();

  1439     }

  1441     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1442         StringBuilder name = new StringBuilder();

  1443         String descr = mi[2];//mi.getDescriptor();

  1444         String nm= mi[1];

  1445         if ("<init>".equals(nm)) { // NOI18N

  1446             name.append("cons"); // NOI18N

  1447         } else {

  1448             name.append(nm);

  1449         }

  1450         countArgs(descr, returnType, name, cnt);

  1451         return name.toString();

  1452     }

  1454     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1455     throws IOException {

  1456         int methodIndex = readUShortArg(byteCodes, i);

  1457         String[] mi = jc.getFieldInfoName(methodIndex);

  1458         char[] returnType = { 'V' };

  1459         StringBuilder cnt = new StringBuilder();

  1460         String mn = findMethodName(mi, cnt, returnType);

  1462         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1463         final Variable[] vars = new Variable[numArguments];

  1465         for (int j = numArguments - 1; j >= 0; --j) {

  1466             vars[j] = mapper.pop();

  1467         }

  1469         if (returnType[0] != 'V') {

  1470             out.append("var ")

  1471                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1472                .append(" = ");

  1473         }

  1475         final String in = mi[0];

  1476         out.append(accessClass(in.replace('/', '_')));

  1477         out.append("(false).");

  1478         if (mn.startsWith("cons_")) {

  1479             out.append("constructor.");

  1480         }

  1481         out.append(mn);

  1482         if (isStatic) {

  1483             out.append('(');

  1484         } else {

  1485             out.append(".call(");

  1486         }

  1487         if (numArguments > 0) {

  1488             out.append(vars[0]);

  1489             for (int j = 1; j < numArguments; ++j) {

  1490                 out.append(", ");

  1491                 out.append(vars[j]);

  1492             }

  1493         }

  1494         out.append(");");

  1495         i += 2;

  1496         addReference(in);

  1497         return i;

  1498     }

  1499     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1500     throws IOException {

  1501         int methodIndex = readUShortArg(byteCodes, i);

  1502         String[] mi = jc.getFieldInfoName(methodIndex);

  1503         char[] returnType = { 'V' };

  1504         StringBuilder cnt = new StringBuilder();

  1505         String mn = findMethodName(mi, cnt, returnType);

  1507         final int numArguments = cnt.length() + 1;

  1508         final Variable[] vars = new Variable[numArguments];

  1510         for (int j = numArguments - 1; j >= 0; --j) {

  1511             vars[j] = mapper.pop();

  1512         }

  1514         if (returnType[0] != 'V') {

  1515             out.append("var ")

  1516                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1517                .append(" = ");

  1518         }

  1520         out.append(vars[0]).append('.');

  1521         out.append(mn);

  1522         out.append('(');

  1523         String sep = "";

  1524         for (int j = 1; j < numArguments; ++j) {

  1525             out.append(sep);

  1526             out.append(vars[j]);

  1527             sep = ", ";

  1528         }

  1529         out.append(");");

  1530         i += 2;

  1531         return i;

  1532     }

  1534     private void addReference(String cn) throws IOException {

  1535         if (requireReference(cn)) {

  1536             debug(" /* needs " + cn + " */");

  1537         }

  1538     }

  1540     private void outType(String d, StringBuilder out) {

  1541         int arr = 0;

  1542         while (d.charAt(0) == '[') {

  1543             out.append('A');

  1544             d = d.substring(1);

  1545         }

  1546         if (d.charAt(0) == 'L') {

  1547             assert d.charAt(d.length() - 1) == ';';

  1548             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1549         } else {

  1550             out.append(d);

  1551         }

  1552     }

  1554     private String encodeConstant(int entryIndex) throws IOException {

  1555         String[] classRef = { null };

  1556         String s = jc.stringValue(entryIndex, classRef);

  1557         if (classRef[0] != null) {

  1558             if (classRef[0].startsWith("[")) {

  1559                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1560             } else {

  1561                 addReference(classRef[0]);

  1562                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1563             }

  1564         }

  1565         return s;

  1566     }

  1568     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1569         byte[] arr = m.findAnnotationData(true);

  1570         if (arr == null) {

  1571             return null;

  1572         }

  1573         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1574         class P extends AnnotationParser {

  1575             public P() {

  1576                 super(false, true);

  1577             }

  1579             int cnt;

  1580             String[] args = new String[30];

  1581             String body;

  1583             @Override

  1584             protected void visitAttr(String type, String attr, String at, String value) {

  1585                 if (type.equals(jvmType)) {

  1586                     if ("body".equals(attr)) {

  1587                         body = value;

  1588                     } else if ("args".equals(attr)) {

  1589                         args[cnt++] = value;

  1590                     } else {

  1591                         throw new IllegalArgumentException(attr);

  1592                     }

  1593                 }

  1594             }

  1595         }

  1596         P p = new P();

  1597         p.parse(arr, jc);

  1598         if (p.body == null) {

  1599             return null;

  1600         }

  1601         StringBuilder cnt = new StringBuilder();

  1602         final String mn = findMethodName(m, cnt);

  1603         out.append(destObject).append(".").append(mn);

  1604         out.append(" = function(");

  1605         String space = "";

  1606         int index = 0;

  1607         for (int i = 0; i < cnt.length(); i++) {

  1608             out.append(space);

  1609             space = outputArg(out, p.args, index);

  1610             index++;

  1611         }

  1612         out.append(") {").append("\n");

  1613         out.append(p.body);

  1614         out.append("\n}\n");

  1615         return mn;

  1616     }

  1617     private static String className(ClassData jc) {

  1618         //return jc.getName().getInternalName().replace('/', '_');

  1619         return jc.getClassName().replace('/', '_');

  1620     }

  1622     private static String[] findAnnotation(

  1623         byte[] arr, ClassData cd, final String className,

  1624         final String... attrNames

  1625     ) throws IOException {

  1626         if (arr == null) {

  1627             return null;

  1628         }

  1629         final String[] values = new String[attrNames.length];

  1630         final boolean[] found = { false };

  1631         final String jvmType = "L" + className.replace('.', '/') + ";";

  1632         AnnotationParser ap = new AnnotationParser(false, true) {

  1633             @Override

  1634             protected void visitAttr(String type, String attr, String at, String value) {

  1635                 if (type.equals(jvmType)) {

  1636                     found[0] = true;

  1637                     for (int i = 0; i < attrNames.length; i++) {

  1638                         if (attrNames[i].equals(attr)) {

  1639                             values[i] = value;

  1640                         }

  1641                     }

  1642                 }

  1643             }

  1645         };

  1646         ap.parse(arr, cd);

  1647         return found[0] ? values : null;

  1648     }

  1650     private CharSequence initField(FieldData v) {

  1651         final String is = v.getInternalSig();

  1652         if (is.length() == 1) {

  1653             switch (is.charAt(0)) {

  1654                 case 'S':

  1655                 case 'J':

  1656                 case 'B':

  1657                 case 'Z':

  1658                 case 'C':

  1659                 case 'I': return " = 0;";

  1660                 case 'F':

  1661                 case 'D': return " = 0.0;";

  1662                 default:

  1663                     throw new IllegalStateException(is);

  1664             }

  1665         }

  1666         return " = null;";

  1667     }

  1669     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1670         AnnotationParser ap = new AnnotationParser(true, false) {

  1671             int[] cnt = new int[32];

  1672             int depth;

  1674             @Override

  1675             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1676                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1677                 requireReference(slashType);

  1679                 if (cnt[depth]++ > 0) {

  1680                     out.append(",");

  1681                 }

  1682                 if (top) {

  1683                     out.append('"').append(attrType).append("\" : ");

  1684                 }

  1685                 out.append("{\n");

  1686                 cnt[++depth] = 0;

  1687             }

  1689             @Override

  1690             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1691                 out.append("\n}\n");

  1692                 depth--;

  1693             }

  1695             @Override

  1696             protected void visitValueStart(String attrName, char type) throws IOException {

  1697                 if (cnt[depth]++ > 0) {

  1698                     out.append(",\n");

  1699                 }

  1700                 cnt[++depth] = 0;

  1701                 if (attrName != null) {

  1702                     out.append(attrName).append(" : ");

  1703                 }

  1704                 if (type == '[') {

  1705                     out.append("[");

  1706                 }

  1707             }

  1709             @Override

  1710             protected void visitValueEnd(String attrName, char type) throws IOException {

  1711                 if (type == '[') {

  1712                     out.append("]");

  1713                 }

  1714                 depth--;

  1715             }

  1717             @Override

  1718             protected void visitAttr(String type, String attr, String attrType, String value)

  1719             throws IOException {

  1720                 if (attr == null && value == null) {

  1721                     return;

  1722                 }

  1723                 out.append(value);

  1724             }

  1726             @Override

  1727             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1728             throws IOException {

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

  1730                 requireReference(slashType);

  1732                 out.append(accessClass(slashType.replace('/', '_')))

  1733                    .append("(false).constructor.").append(value);

  1734             }

  1735         };

  1736         ap.parse(data, cd);

  1737     }

  1739     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1740         final String name = args[indx];

  1741         if (name == null) {

  1742             return "";

  1743         }

  1744         if (name.contains(",")) {

  1745             throw new IOException("Wrong parameter with ',': " + name);

  1746         }

  1747         out.append(name);

  1748         return ",";

  1749     }

  1751     private static void emit(final Appendable out,

  1752                              final String format,

  1753                              final CharSequence... params) throws IOException {

  1754         final int length = format.length();

  1756         int processed = 0;

  1757         int paramOffset = format.indexOf('@');

  1758         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1759             final char paramChar = format.charAt(paramOffset + 1);

  1760             if ((paramChar >= '1') && (paramChar <= '9')) {

  1761                 final int paramIndex = paramChar - '0' - 1;

  1763                 out.append(format, processed, paramOffset);

  1764                 out.append(params[paramIndex]);

  1766                 ++paramOffset;

  1767                 processed = paramOffset + 1;

  1768             }

  1770             paramOffset = format.indexOf('@', paramOffset + 1);

  1771         }

  1773         out.append(format, processed, length);

  1774     }

  1776     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1777         out.append("} catch (e) {\n");

  1778         int finallyPC = -1;

  1779         for (TrapData e : traps) {

  1780             if (e == null) {

  1781                 break;

  1782             }

  1783             if (e.catch_cpx != 0) { //not finally

  1784                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1785                 addReference(classInternalName);

  1786                 if ("java/lang/Throwable".equals(classInternalName)) {

  1787                     out.append("if (e.$instOf_java_lang_Throwable) {");

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

  1789                     out.append("} else {");

  1790                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1791                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1792                     out.append("}");

  1793                     goTo(out, current, e.handler_pc, topMostLabel);

  1794                 } else {

  1795                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1796                     out.append("var stA0 = e;");

  1797                     goTo(out, current, e.handler_pc, topMostLabel);

  1798                     out.append("}\n");

  1799                 }

  1800             } else {

  1801                 finallyPC = e.handler_pc;

  1802             }

  1803         }

  1804         if (finallyPC == -1) {

  1805             out.append("throw e;");

  1806         } else {

  1807             out.append("var stA0 = e;");

  1808             goTo(out, current, finallyPC, topMostLabel);

  1809         }

  1810         out.append("\n}");

  1811     }

  1813     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1814         if (to < current) {

  1815             if (canBack < to) {

  1816                 out.append("{ gt = 0; continue X_" + to + "; }");

  1817             } else {

  1818                 out.append("{ gt = " + to + "; continue X_0; }");

  1819             }

  1820         } else {

  1821             out.append("{ gt = " + to + "; break IF; }");

  1822         }

  1823     }

  1825     private static void emitIf(

  1826         Appendable out, String pattern, Variable param,

  1827         int current, int to, int canBack

  1828     ) throws IOException {

  1829         emit(out, pattern, param);

  1830         goTo(out, current, to, canBack);

  1831     }

  1833     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1834         String jvmType;

  1835         switch (atype) {

  1836             case 4: jvmType = "[Z"; break;

  1837             case 5: jvmType = "[C"; break;

  1838             case 6: jvmType = "[F"; break;

  1839             case 7: jvmType = "[D"; break;

  1840             case 8: jvmType = "[B"; break;

  1841             case 9: jvmType = "[S"; break;

  1842             case 10: jvmType = "[I"; break;

  1843             case 11: jvmType = "[J"; break;

  1844             default: throw new IllegalStateException("Array type: " + atype);

  1845         }

  1846         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  1847              smapper.popI(), smapper.pushA(), jvmType);

  1848     }

  1850     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  1851         String typeName = jc.getClassName(type);

  1852         if (typeName.startsWith("[")) {

  1853             typeName = "[" + typeName;

  1854         } else {

  1855             typeName = "[L" + typeName + ";";

  1856         }

  1857         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  1858              smapper.popI(), smapper.pushA(), typeName);

  1859     }

  1861     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  1862         String typeName = jc.getClassName(type);

  1863         int dim = readUByte(byteCodes, ++i);

  1864         StringBuilder dims = new StringBuilder();

  1865         dims.append('[');

  1866         for (int d = 0; d < dim; d++) {

  1867             if (d != 0) {

  1868                 dims.insert(1, ",");

  1869             }

  1870             dims.insert(1, smapper.popI());

  1871         }

  1872         dims.append(']');

  1873         emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  1874              dims.toString(), smapper.pushA(), typeName);

  1875         return i;

  1876     }

  1878     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1879         int table = i / 4 * 4 + 4;

  1880         int dflt = i + readInt4(byteCodes, table);

  1881         table += 4;

  1882         int low = readInt4(byteCodes, table);

  1883         table += 4;

  1884         int high = readInt4(byteCodes, table);

  1885         table += 4;

  1886         out.append("switch (").append(smapper.popI()).append(") {\n");

  1887         while (low <= high) {

  1888             int offset = i + readInt4(byteCodes, table);

  1889             table += 4;

  1890             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  1891             low++;

  1892         }

  1893         out.append("  default: ");

  1894         goTo(out, i, dflt, topMostLabel);

  1895         out.append("\n}");

  1896         i = table - 1;

  1897         return i;

  1898     }

  1900     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1901         int table = i / 4 * 4 + 4;

  1902         int dflt = i + readInt4(byteCodes, table);

  1903         table += 4;

  1904         int n = readInt4(byteCodes, table);

  1905         table += 4;

  1906         out.append("switch (").append(smapper.popI()).append(") {\n");

  1907         while (n-- > 0) {

  1908             int cnstnt = readInt4(byteCodes, table);

  1909             table += 4;

  1910             int offset = i + readInt4(byteCodes, table);

  1911             table += 4;

  1912             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  1913         }

  1914         out.append("  default: ");

  1915         goTo(out, i, dflt, topMostLabel);

  1916         out.append("\n}");

  1917         i = table - 1;

  1918         return i;

  1919     }

  1921     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  1922         final String type = jc.getClassName(indx);

  1923         if (!type.startsWith("[")) {

  1924             emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  1925                  smapper.popA(), smapper.pushI(),

  1926                  type.replace('/', '_'));

  1927         } else {

  1928             emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1929                 smapper.popA(), smapper.pushI(),

  1930                 type

  1931             );

  1932         }

  1933     }

  1935     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  1936         final String type = jc.getClassName(indx);

  1937         if (!type.startsWith("[")) {

  1938             emit(out,

  1939                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  1940                  smapper.getA(0), type.replace('/', '_'));

  1941         } else {

  1942             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);",

  1943                  smapper.getA(0), type

  1944             );

  1945         }

  1946     }

  1948     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  1949         for (int j = prev; j <= i; j++) {

  1950             out.append(" ");

  1951             final int cc = readUByte(byteCodes, j);

  1952             out.append(Integer.toString(cc));

  1953         }

  1954     }

  1955 }

author	Lubomir Nerad <lubomir.nerad@oracle.com>
	Thu, 25 Apr 2013 16:17:48 +0200
branch	closure
changeset 1020	a6bacea2518f
parent 962	787578f33c21
child 1029	b1fe994d4267
permissions	-rw-r--r--