hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@b1fe994d4267

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

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

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

    25  *

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

    27  */

    28 abstract class ByteCodeToJavaScript {

    29     private ClassData jc;

    30     final Appendable out;

    32     protected ByteCodeToJavaScript(Appendable out) {

    33         this.out = out;

    34     }

    36     /* Collects additional required resources.

    37      *

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

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

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

    41      */

    42     protected abstract boolean requireReference(String internalClassName);

    44     /*

    45      * @param resourcePath name of resources to read

    46      */

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

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

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

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

    52      *

    53      * @param className suggested name of the class

    54      */

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

    56         return className + " = ";

    57     }

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

    59         return classOperation;

    60     }

    62     protected void declaredClass(ClassData classData, String mangledName)

    63             throws IOException {

    64     }

    66     /** Prints out a debug message.

    67      *

    68      * @param msg the message

    69      * @return true if the message has been printed

    70      * @throws IOException

    71      */

    72     boolean debug(String msg) throws IOException {

    73         out.append(msg);

    74         return true;

    75     }

    77     /**

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

    79      *

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

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

    82      *

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

    84      */

    86     public String compile(InputStream classFile) throws IOException {

    87         this.jc = new ClassData(classFile);

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

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

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

    91             );

    92         }

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

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

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

    96             "resource", "processByteCode"

    97         );

    98         if (arr != null) {

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

   100                 requireScript(arr[0]);

   101             }

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

   103                 return null;

   104             }

   105         }

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

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

   108             "container", "prototype"

   109         );

   110         StringArray toInitilize = new StringArray();

   111         final String className = className(jc);

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

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

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

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

   116         if (proto == null) {

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

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

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

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

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

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

   123         } else {

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

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

   126                 proto[0] = "p";

   127             }

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

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

   130         }

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

   132             if (v.isStatic()) {

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

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

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

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

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

   138             } else {

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

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

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

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

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

   144                    .append("; };");

   145             }

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

   148         }

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

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

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

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

   153                 "name", "value"

   154             );

   155             if (only != null) {

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

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

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

   159                 }

   160                 continue;

   161             }

   162             String destObject;

   163             String mn;

   164             out.append("\n    ");

   165             if (m.isStatic()) {

   166                 destObject = "c";

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

   168             } else {

   169                 if (m.isConstructor()) {

   170                     destObject = "CLS";

   171                     mn = generateInstanceMethod(destObject, m);

   172                 } else {

   173                     destObject = "c";

   174                     mn = generateInstanceMethod(destObject, m);

   175                 }

   176             }

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

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

   179             if (runAnno != null) {

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

   181                 generateAnno(jc, out, runAnno);

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

   183             }

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

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

   186         }

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

   188         String instOfName = "$instOf_" + className;

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

   190 //        obfuscationDelegate.exportJSProperty(out, "c", instOfName);

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

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

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

   194 //            obfuscationDelegate.exportJSProperty(out, "c", instOfName);

   195         }

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

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

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

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

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

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

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

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

   204         if (classAnno != null) {

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

   206             generateAnno(jc, out, classAnno);

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

   208         }

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

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

   211         }

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

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

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

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

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

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

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

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

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

   221                 "name", "value"

   222             );

   223             if (only != null) {

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

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

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

   227                 }

   228                 continue;

   229             }

   230             if (!v.isStatic()) {

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

   232                     append(className).append('_').

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

   234             }

   235         }

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

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

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

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

   241         declaredClass(jc, className);

   243 //        StringBuilder sb = new StringBuilder();

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

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

   246 //        }

   247         return "";

   248     }

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

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

   251         if (jsb != null) {

   252             return jsb;

   253         }

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

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

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

   257         }

   258         generateMethod(destObject, mn, m);

   259         return mn;

   260     }

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

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

   264         if (jsb != null) {

   265             return jsb;

   266         }

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

   268         generateMethod(destObject, mn, m);

   269         return mn;

   270     }

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

   273             throws IOException {

   274         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   275         TrapDataIterator trap = m.getTrapDataIterator();

   276         final LocalsMapper lmapper =

   277                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   284         if (byteCodes == null) {

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

   286                .append(jc.getClassName()).append('.')

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

   288             out.append("};");

   289             return;

   290         }

   292         final StackMapper smapper = new StackMapper();

   294         if (!m.isStatic()) {

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

   296         }

   298         int lastStackFrame = -1;

   299         TrapData[] previousTrap = null;

   300         boolean wide = false;

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

   303         int openBraces = 0;

   304         int topMostLabel = 0;

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

   306             int prev = i;

   307             stackMapIterator.advanceTo(i);

   308             boolean changeInCatch = trap.advanceTo(i);

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

   310                 if (previousTrap != null) {

   311                     generateCatch(previousTrap, i, topMostLabel);

   312                     previousTrap = null;

   313                 }

   314             }

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

   316                 if (i != 0) {

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

   318                 }

   319                 if (openBraces > 64) {

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

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

   322                     }

   323                     openBraces = 1;

   324                     topMostLabel = i;

   325                 }

   327                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   331                 openBraces++;

   332                 changeInCatch = true;

   333             } else {

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

   335             }

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

   337                 out.append("try {");

   338                 previousTrap = trap.current();

   339             }

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

   341             switch (c) {

   342                 case opc_aload_0:

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

   344                     break;

   345                 case opc_iload_0:

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

   347                     break;

   348                 case opc_lload_0:

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

   350                     break;

   351                 case opc_fload_0:

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

   353                     break;

   354                 case opc_dload_0:

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

   356                     break;

   357                 case opc_aload_1:

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

   359                     break;

   360                 case opc_iload_1:

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

   362                     break;

   363                 case opc_lload_1:

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

   365                     break;

   366                 case opc_fload_1:

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

   368                     break;

   369                 case opc_dload_1:

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

   371                     break;

   372                 case opc_aload_2:

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

   374                     break;

   375                 case opc_iload_2:

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

   377                     break;

   378                 case opc_lload_2:

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

   380                     break;

   381                 case opc_fload_2:

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

   383                     break;

   384                 case opc_dload_2:

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

   386                     break;

   387                 case opc_aload_3:

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

   389                     break;

   390                 case opc_iload_3:

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

   392                     break;

   393                 case opc_lload_3:

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

   395                     break;

   396                 case opc_fload_3:

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

   398                     break;

   399                 case opc_dload_3:

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

   401                     break;

   402                 case opc_iload: {

   403                     ++i;

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

   405                                           : readUByte(byteCodes, i);

   406                     wide = false;

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

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

   409                     break;

   410                 }

   411                 case opc_lload: {

   412                     ++i;

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

   414                                           : readUByte(byteCodes, i);

   415                     wide = false;

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

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

   418                     break;

   419                 }

   420                 case opc_fload: {

   421                     ++i;

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

   423                                           : readUByte(byteCodes, i);

   424                     wide = false;

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

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

   427                     break;

   428                 }

   429                 case opc_dload: {

   430                     ++i;

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

   432                                           : readUByte(byteCodes, i);

   433                     wide = false;

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

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

   436                     break;

   437                 }

   438                 case opc_aload: {

   439                     ++i;

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

   441                                           : readUByte(byteCodes, i);

   442                     wide = false;

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

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

   445                     break;

   446                 }

   447                 case opc_istore: {

   448                     ++i;

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

   450                                           : readUByte(byteCodes, i);

   451                     wide = false;

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

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

   454                     break;

   455                 }

   456                 case opc_lstore: {

   457                     ++i;

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

   459                                           : readUByte(byteCodes, i);

   460                     wide = false;

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

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

   463                     break;

   464                 }

   465                 case opc_fstore: {

   466                     ++i;

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

   468                                           : readUByte(byteCodes, i);

   469                     wide = false;

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

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

   472                     break;

   473                 }

   474                 case opc_dstore: {

   475                     ++i;

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

   477                                           : readUByte(byteCodes, i);

   478                     wide = false;

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

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

   481                     break;

   482                 }

   483                 case opc_astore: {

   484                     ++i;

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

   486                                           : readUByte(byteCodes, i);

   487                     wide = false;

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

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

   490                     break;

   491                 }

   492                 case opc_astore_0:

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

   494                     break;

   495                 case opc_istore_0:

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

   497                     break;

   498                 case opc_lstore_0:

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

   500                     break;

   501                 case opc_fstore_0:

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

   503                     break;

   504                 case opc_dstore_0:

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

   506                     break;

   507                 case opc_astore_1:

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

   509                     break;

   510                 case opc_istore_1:

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

   512                     break;

   513                 case opc_lstore_1:

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

   515                     break;

   516                 case opc_fstore_1:

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

   518                     break;

   519                 case opc_dstore_1:

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

   521                     break;

   522                 case opc_astore_2:

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

   524                     break;

   525                 case opc_istore_2:

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

   527                     break;

   528                 case opc_lstore_2:

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

   530                     break;

   531                 case opc_fstore_2:

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

   533                     break;

   534                 case opc_dstore_2:

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

   536                     break;

   537                 case opc_astore_3:

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

   539                     break;

   540                 case opc_istore_3:

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

   542                     break;

   543                 case opc_lstore_3:

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

   545                     break;

   546                 case opc_fstore_3:

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

   548                     break;

   549                 case opc_dstore_3:

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

   551                     break;

   552                 case opc_iadd:

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

   554                     break;

   555                 case opc_ladd:

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

   557                     break;

   558                 case opc_fadd:

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

   560                     break;

   561                 case opc_dadd:

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

   563                     break;

   564                 case opc_isub:

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

   566                     break;

   567                 case opc_lsub:

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

   569                     break;

   570                 case opc_fsub:

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

   572                     break;

   573                 case opc_dsub:

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

   575                     break;

   576                 case opc_imul:

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

   578                     break;

   579                 case opc_lmul:

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

   581                     break;

   582                 case opc_fmul:

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

   584                     break;

   585                 case opc_dmul:

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

   587                     break;

   588                 case opc_idiv:

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

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

   591                     break;

   592                 case opc_ldiv:

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

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

   595                     break;

   596                 case opc_fdiv:

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

   598                     break;

   599                 case opc_ddiv:

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

   601                     break;

   602                 case opc_irem:

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

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

   605                     break;

   606                 case opc_lrem:

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

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

   609                     break;

   610                 case opc_frem:

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

   612                     break;

   613                 case opc_drem:

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

   615                     break;

   616                 case opc_iand:

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

   618                     break;

   619                 case opc_land:

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

   621                     break;

   622                 case opc_ior:

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

   624                     break;

   625                 case opc_lor:

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

   627                     break;

   628                 case opc_ixor:

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

   630                     break;

   631                 case opc_lxor:

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

   633                     break;

   634                 case opc_ineg:

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

   636                     break;

   637                 case opc_lneg:

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

   639                     break;

   640                 case opc_fneg:

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

   642                     break;

   643                 case opc_dneg:

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

   645                     break;

   646                 case opc_ishl:

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

   648                     break;

   649                 case opc_lshl:

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

   651                     break;

   652                 case opc_ishr:

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

   654                     break;

   655                 case opc_lshr:

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

   657                     break;

   658                 case opc_iushr:

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

   660                     break;

   661                 case opc_lushr:

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

   663                     break;

   664                 case opc_iinc: {

   665                     ++i;

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

   667                                              : readUByte(byteCodes, i);

   668                     ++i;

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

   670                                             : byteCodes[i];

   671                     wide = false;

   672                     if (incrBy == 1) {

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

   674                     } else {

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

   676                              lmapper.getI(varIndx),

   677                              Integer.toString(incrBy));

   678                     }

   679                     break;

   680                 }

   681                 case opc_return:

   682                     emit(out, "return;");

   683                     break;

   684                 case opc_ireturn:

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

   686                     break;

   687                 case opc_lreturn:

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

   689                     break;

   690                 case opc_freturn:

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

   692                     break;

   693                 case opc_dreturn:

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

   695                     break;

   696                 case opc_areturn:

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

   698                     break;

   699                 case opc_i2l:

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

   701                     break;

   702                 case opc_i2f:

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

   704                     break;

   705                 case opc_i2d:

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

   707                     break;

   708                 case opc_l2i:

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

   710                     break;

   711                     // max int check?

   712                 case opc_l2f:

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

   714                     break;

   715                 case opc_l2d:

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

   717                     break;

   718                 case opc_f2d:

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

   720                     break;

   721                 case opc_d2f:

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

   723                     break;

   724                 case opc_f2i:

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

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

   727                     break;

   728                 case opc_f2l:

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

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

   731                     break;

   732                 case opc_d2i:

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

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

   735                     break;

   736                 case opc_d2l:

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

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

   739                     break;

   740                 case opc_i2b:

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

   742                     break;

   743                 case opc_i2c:

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

   745                     break;

   746                 case opc_i2s:

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

   748                     break;

   749                 case opc_aconst_null:

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

   751                     break;

   752                 case opc_iconst_m1:

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

   754                     break;

   755                 case opc_iconst_0:

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

   757                     break;

   758                 case opc_dconst_0:

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

   760                     break;

   761                 case opc_lconst_0:

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

   763                     break;

   764                 case opc_fconst_0:

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

   766                     break;

   767                 case opc_iconst_1:

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

   769                     break;

   770                 case opc_lconst_1:

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

   772                     break;

   773                 case opc_fconst_1:

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

   775                     break;

   776                 case opc_dconst_1:

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

   778                     break;

   779                 case opc_iconst_2:

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

   781                     break;

   782                 case opc_fconst_2:

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

   784                     break;

   785                 case opc_iconst_3:

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

   787                     break;

   788                 case opc_iconst_4:

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

   790                     break;

   791                 case opc_iconst_5:

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

   793                     break;

   794                 case opc_ldc: {

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

   796                     String v = encodeConstant(indx);

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

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

   799                     break;

   800                 }

   801                 case opc_ldc_w:

   802                 case opc_ldc2_w: {

   803                     int indx = readUShortArg(byteCodes, i);

   804                     i += 2;

   805                     String v = encodeConstant(indx);

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

   807                     if (type == VarType.LONG) {

   808                         final Long lv = new Long(v);

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

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

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

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

   813                     } else {

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

   815                     }

   816                     break;

   817                 }

   818                 case opc_lcmp:

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

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

   821                     break;

   822                 case opc_fcmpl:

   823                 case opc_fcmpg:

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

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

   826                     break;

   827                 case opc_dcmpl:

   828                 case opc_dcmpg:

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

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

   831                     break;

   832                 case opc_if_acmpeq:

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

   834                                    "===", topMostLabel);

   835                     break;

   836                 case opc_if_acmpne:

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

   838                                    "!==", topMostLabel);

   839                     break;

   840                 case opc_if_icmpeq:

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

   842                                    "==", topMostLabel);

   843                     break;

   844                 case opc_ifeq: {

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

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

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

   848                     i += 2;

   849                     break;

   850                 }

   851                 case opc_ifne: {

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

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

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

   855                     i += 2;

   856                     break;

   857                 }

   858                 case opc_iflt: {

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

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

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

   862                     i += 2;

   863                     break;

   864                 }

   865                 case opc_ifle: {

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

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

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

   869                     i += 2;

   870                     break;

   871                 }

   872                 case opc_ifgt: {

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

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

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

   876                     i += 2;

   877                     break;

   878                 }

   879                 case opc_ifge: {

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

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

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

   883                     i += 2;

   884                     break;

   885                 }

   886                 case opc_ifnonnull: {

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

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

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

   890                     i += 2;

   891                     break;

   892                 }

   893                 case opc_ifnull: {

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

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

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

   897                     i += 2;

   898                     break;

   899                 }

   900                 case opc_if_icmpne:

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

   902                                    "!=", topMostLabel);

   903                     break;

   904                 case opc_if_icmplt:

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

   906                                    "<", topMostLabel);

   907                     break;

   908                 case opc_if_icmple:

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

   910                                    "<=", topMostLabel);

   911                     break;

   912                 case opc_if_icmpgt:

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

   914                                    ">", topMostLabel);

   915                     break;

   916                 case opc_if_icmpge:

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

   918                                    ">=", topMostLabel);

   919                     break;

   920                 case opc_goto: {

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

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

   923                     i += 2;

   924                     break;

   925                 }

   926                 case opc_lookupswitch: {

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

   928                     break;

   929                 }

   930                 case opc_tableswitch: {

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

   932                     break;

   933                 }

   934                 case opc_invokeinterface: {

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

   936                     break;

   937                 }

   938                 case opc_invokevirtual:

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

   940                     break;

   941                 case opc_invokespecial:

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

   943                     break;

   944                 case opc_invokestatic:

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

   946                     break;

   947                 case opc_new: {

   948                     int indx = readUShortArg(byteCodes, i);

   949                     String ci = jc.getClassName(indx);

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

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

   952                     addReference(ci);

   953                     i += 2;

   954                     break;

   955                 }

   956                 case opc_newarray:

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

   958                     generateNewArray(atype, smapper);

   959                     break;

   960                 case opc_anewarray: {

   961                     int type = readUShortArg(byteCodes, i);

   962                     i += 2;

   963                     generateANewArray(type, smapper);

   964                     break;

   965                 }

   966                 case opc_multianewarray: {

   967                     int type = readUShortArg(byteCodes, i);

   968                     i += 2;

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

   970                     break;

   971                 }

   972                 case opc_arraylength:

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

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

   975                     break;

   976                 case opc_lastore:

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

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

   979                     break;

   980                 case opc_fastore:

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

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

   983                     break;

   984                 case opc_dastore:

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

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

   987                     break;

   988                 case opc_aastore:

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

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

   991                     break;

   992                 case opc_iastore:

   993                 case opc_bastore:

   994                 case opc_castore:

   995                 case opc_sastore:

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

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

   998                     break;

   999                 case opc_laload:

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

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

  1002                     break;

  1003                 case opc_faload:

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

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

  1006                     break;

  1007                 case opc_daload:

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

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

  1010                     break;

  1011                 case opc_aaload:

  1012                     emit(out, "var @3 = @2.at(@1);",

  1013                          smapper.popI(), smapper.popA(), smapper.pushA());

  1014                     break;

  1015                 case opc_iaload:

  1016                 case opc_baload:

  1017                 case opc_caload:

  1018                 case opc_saload:

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

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

  1021                     break;

  1022                 case opc_pop:

  1023                 case opc_pop2:

  1024                     smapper.pop(1);

  1025                     debug("/* pop */");

  1026                     break;

  1027                 case opc_dup: {

  1028                     final Variable v = smapper.get(0);

  1029                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1030                     break;

  1031                 }

  1032                 case opc_dup2: {

  1033                     final Variable vi1 = smapper.get(0);

  1035                     if (vi1.isCategory2()) {

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

  1037                              smapper.pushT(vi1.getType()), vi1);

  1038                     } else {

  1039                         final Variable vi2 = smapper.get(1);

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

  1041                              smapper.pushT(vi2.getType()), vi2,

  1042                              smapper.pushT(vi1.getType()), vi1);

  1043                     }

  1044                     break;

  1045                 }

  1046                 case opc_dup_x1: {

  1047                     final Variable vi1 = smapper.pop();

  1048                     final Variable vi2 = smapper.pop();

  1049                     final Variable vo3 = smapper.pushT(vi1.getType());

  1050                     final Variable vo2 = smapper.pushT(vi2.getType());

  1051                     final Variable vo1 = smapper.pushT(vi1.getType());

  1053                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1054                          vo1, vi1, vo2, vi2, vo3, vo1);

  1055                     break;

  1056                 }

  1057                 case opc_dup2_x1: {

  1058                     final Variable vi1 = smapper.pop();

  1059                     final Variable vi2 = smapper.pop();

  1061                     if (vi1.isCategory2()) {

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

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

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

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

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

  1068                     } else {

  1069                         final Variable vi3 = smapper.pop();

  1070                         final Variable vo5 = smapper.pushT(vi2.getType());

  1071                         final Variable vo4 = smapper.pushT(vi1.getType());

  1072                         final Variable vo3 = smapper.pushT(vi3.getType());

  1073                         final Variable vo2 = smapper.pushT(vi2.getType());

  1074                         final Variable vo1 = smapper.pushT(vi1.getType());

  1076                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1077                              vo1, vi1, vo2, vi2, vo3, vi3);

  1078                         emit(out, " @1 = @2, @3 = @4;",

  1079                              vo4, vo1, vo5, vo2);

  1080                     }

  1081                     break;

  1082                 }

  1083                 case opc_dup_x2: {

  1084                     final Variable vi1 = smapper.pop();

  1085                     final Variable vi2 = smapper.pop();

  1087                     if (vi2.isCategory2()) {

  1088                         final Variable vo3 = smapper.pushT(vi1.getType());

  1089                         final Variable vo2 = smapper.pushT(vi2.getType());

  1090                         final Variable vo1 = smapper.pushT(vi1.getType());

  1092                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1093                              vo1, vi1, vo2, vi2, vo3, vo1);

  1094                     } else {

  1095                         final Variable vi3 = smapper.pop();

  1096                         final Variable vo4 = smapper.pushT(vi1.getType());

  1097                         final Variable vo3 = smapper.pushT(vi3.getType());

  1098                         final Variable vo2 = smapper.pushT(vi2.getType());

  1099                         final Variable vo1 = smapper.pushT(vi1.getType());

  1101                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1102                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1103                     }

  1104                     break;

  1105                 }

  1106                 case opc_dup2_x2: {

  1107                     final Variable vi1 = smapper.pop();

  1108                     final Variable vi2 = smapper.pop();

  1110                     if (vi1.isCategory2()) {

  1111                         if (vi2.isCategory2()) {

  1112                             final Variable vo3 = smapper.pushT(vi1.getType());

  1113                             final Variable vo2 = smapper.pushT(vi2.getType());

  1114                             final Variable vo1 = smapper.pushT(vi1.getType());

  1116                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1117                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1118                         } else {

  1119                             final Variable vi3 = smapper.pop();

  1120                             final Variable vo4 = smapper.pushT(vi1.getType());

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

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

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

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

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

  1127                         }

  1128                     } else {

  1129                         final Variable vi3 = smapper.pop();

  1131                         if (vi3.isCategory2()) {

  1132                             final Variable vo5 = smapper.pushT(vi2.getType());

  1133                             final Variable vo4 = smapper.pushT(vi1.getType());

  1134                             final Variable vo3 = smapper.pushT(vi3.getType());

  1135                             final Variable vo2 = smapper.pushT(vi2.getType());

  1136                             final Variable vo1 = smapper.pushT(vi1.getType());

  1138                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1139                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1140                             emit(out, " @1 = @2, @3 = @4;",

  1141                                  vo4, vo1, vo5, vo2);

  1142                         } else {

  1143                             final Variable vi4 = smapper.pop();

  1144                             final Variable vo6 = smapper.pushT(vi2.getType());

  1145                             final Variable vo5 = smapper.pushT(vi1.getType());

  1146                             final Variable vo4 = smapper.pushT(vi4.getType());

  1147                             final Variable vo3 = smapper.pushT(vi3.getType());

  1148                             final Variable vo2 = smapper.pushT(vi2.getType());

  1149                             final Variable vo1 = smapper.pushT(vi1.getType());

  1151                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1152                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1153                             emit(out, " @1 = @2, @3 = @4;",

  1154                                  vo5, vo1, vo6, vo2);

  1155                         }

  1156                     }

  1157                     break;

  1158                 }

  1159                 case opc_swap: {

  1160                     final Variable vi1 = smapper.get(0);

  1161                     final Variable vi2 = smapper.get(1);

  1163                     if (vi1.getType() == vi2.getType()) {

  1164                         final Variable tmp = smapper.pushT(vi1.getType());

  1166                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1167                              tmp, vi1, vi2);

  1168                         smapper.pop(1);

  1169                     } else {

  1170                         smapper.pop(2);

  1171                         smapper.pushT(vi1.getType());

  1172                         smapper.pushT(vi2.getType());

  1173                     }

  1174                     break;

  1175                 }

  1176                 case opc_bipush:

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

  1178                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1179                     break;

  1180                 case opc_sipush:

  1181                     emit(out, "var @1 = @2;",

  1182                          smapper.pushI(),

  1183                          Integer.toString(readShortArg(byteCodes, i)));

  1184                     i += 2;

  1185                     break;

  1186                 case opc_getfield: {

  1187                     int indx = readUShortArg(byteCodes, i);

  1188                     String[] fi = jc.getFieldInfoName(indx);

  1189                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1190                     final String mangleClass = mangleSig(fi[0]);

  1191                     final String mangleClassAccess = accessClass(mangleClass);

  1192                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1193                          smapper.popA(),

  1194                          smapper.pushT(type), fi[1], mangleClassAccess

  1195                     );

  1196                     i += 2;

  1197                     break;

  1198                 }

  1199                 case opc_putfield: {

  1200                     int indx = readUShortArg(byteCodes, i);

  1201                     String[] fi = jc.getFieldInfoName(indx);

  1202                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1203                     final String mangleClass = mangleSig(fi[0]);

  1204                     final String mangleClassAccess = accessClass(mangleClass);

  1205                     emit(out, "@4(false)._@3.call(@2, @1);",

  1206                          smapper.popT(type),

  1207                          smapper.popA(), fi[1],

  1208                          mangleClassAccess

  1209                     );

  1210                     i += 2;

  1211                     break;

  1212                 }

  1213                 case opc_getstatic: {

  1214                     int indx = readUShortArg(byteCodes, i);

  1215                     String[] fi = jc.getFieldInfoName(indx);

  1216                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1217                     emit(out, "var @1 = @2(false)._@3();",

  1218                          smapper.pushT(type),

  1219                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1220                     i += 2;

  1221                     addReference(fi[0]);

  1222                     break;

  1223                 }

  1224                 case opc_putstatic: {

  1225                     int indx = readUShortArg(byteCodes, i);

  1226                     String[] fi = jc.getFieldInfoName(indx);

  1227                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1228                     emit(out, "@1(false)._@2(@3);",

  1229                          accessClass(fi[0].replace('/', '_')), fi[1],

  1230                          smapper.popT(type));

  1231                     i += 2;

  1232                     addReference(fi[0]);

  1233                     break;

  1234                 }

  1235                 case opc_checkcast: {

  1236                     int indx = readUShortArg(byteCodes, i);

  1237                     generateCheckcast(indx, smapper);

  1238                     i += 2;

  1239                     break;

  1240                 }

  1241                 case opc_instanceof: {

  1242                     int indx = readUShortArg(byteCodes, i);

  1243                     generateInstanceOf(indx, smapper);

  1244                     i += 2;

  1245                     break;

  1246                 }

  1247                 case opc_athrow: {

  1248                     final Variable v = smapper.popA();

  1249                     smapper.clear();

  1251                     emit(out, "{ var @1 = @2; throw @2; }",

  1252                          smapper.pushA(), v);

  1253                     break;

  1254                 }

  1256                 case opc_monitorenter: {

  1257                     out.append("/* monitor enter */");

  1258                     smapper.popA();

  1259                     break;

  1260                 }

  1262                 case opc_monitorexit: {

  1263                     out.append("/* monitor exit */");

  1264                     smapper.popA();

  1265                     break;

  1266                 }

  1268                 case opc_wide:

  1269                     wide = true;

  1270                     break;

  1272                 default: {

  1273                     wide = false;

  1274                     emit(out, "throw 'unknown bytecode @1';",

  1275                          Integer.toString(c));

  1276                 }

  1277             }

  1278             if (debug(" //")) {

  1279                 generateByteCodeComment(prev, i, byteCodes);

  1280             }

  1281             out.append("\n");

  1282         }

  1283         if (previousTrap != null) {

  1284             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1285         }

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

  1287         while (openBraces-- > 0) {

  1288             out.append('}');

  1289         }

  1290         out.append("\n};");

  1291     }

  1293     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1294         int indx = i + readShortArg(byteCodes, i);

  1295         out.append("if (").append(v1)

  1296            .append(' ').append(test).append(' ')

  1297            .append(v2).append(") ");

  1298         goTo(out, i, indx, topMostLabel);

  1299         return i + 2;

  1300     }

  1302     private int readInt4(byte[] byteCodes, int offset) {

  1303         final int d = byteCodes[offset + 0] << 24;

  1304         final int c = byteCodes[offset + 1] << 16;

  1305         final int b = byteCodes[offset + 2] << 8;

  1306         final int a = byteCodes[offset + 3];

  1307         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1308     }

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

  1310         return byteCodes[offset] & 0xff;

  1311     }

  1313     private static int readUShort(byte[] byteCodes, int offset) {

  1314         return ((byteCodes[offset] & 0xff) << 8)

  1315                     | (byteCodes[offset + 1] & 0xff);

  1316     }

  1317     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1318         return readUShort(byteCodes, offsetInstruction + 1);

  1319     }

  1321     private static int readShort(byte[] byteCodes, int offset) {

  1322         int signed = byteCodes[offset];

  1323         byte b0 = (byte)signed;

  1324         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1325     }

  1326     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1327         return readShort(byteCodes, offsetInstruction + 1);

  1328     }

  1330     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1331         int i = 0;

  1332         Boolean count = null;

  1333         boolean array = false;

  1334         sig.append("__");

  1335         int firstPos = sig.length();

  1336         while (i < descriptor.length()) {

  1337             char ch = descriptor.charAt(i++);

  1338             switch (ch) {

  1339                 case '(':

  1340                     count = true;

  1341                     continue;

  1342                 case ')':

  1343                     count = false;

  1344                     continue;

  1345                 case 'B':

  1346                 case 'C':

  1347                 case 'D':

  1348                 case 'F':

  1349                 case 'I':

  1350                 case 'J':

  1351                 case 'S':

  1352                 case 'Z':

  1353                     if (count) {

  1354                         if (array) {

  1355                             sig.append("_3");

  1356                         }

  1357                         sig.append(ch);

  1358                         if (ch == 'J' || ch == 'D') {

  1359                             cnt.append('1');

  1360                         } else {

  1361                             cnt.append('0');

  1362                         }

  1363                     } else {

  1364                         sig.insert(firstPos, ch);

  1365                         if (array) {

  1366                             returnType[0] = '[';

  1367                             sig.insert(firstPos, "_3");

  1368                         } else {

  1369                             returnType[0] = ch;

  1370                         }

  1371                     }

  1372                     array = false;

  1373                     continue;

  1374                 case 'V':

  1375                     assert !count;

  1376                     returnType[0] = 'V';

  1377                     sig.insert(firstPos, 'V');

  1378                     continue;

  1379                 case 'L':

  1380                     int next = descriptor.indexOf(';', i);

  1381                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1382                     if (count) {

  1383                         if (array) {

  1384                             sig.append("_3");

  1385                         }

  1386                         sig.append(realSig);

  1387                         cnt.append('0');

  1388                     } else {

  1389                         sig.insert(firstPos, realSig);

  1390                         if (array) {

  1391                             sig.insert(firstPos, "_3");

  1392                         }

  1393                         returnType[0] = 'L';

  1394                     }

  1395                     i = next + 1;

  1396                     array = false;

  1397                     continue;

  1398                 case '[':

  1399                     array = true;

  1400                     continue;

  1401                 default:

  1402                     throw new IllegalStateException("Invalid char: " + ch);

  1403             }

  1404         }

  1405     }

  1407     static String mangleSig(String sig) {

  1408         return mangleSig(sig, 0, sig.length());

  1409     }

  1411     private static String mangleSig(String txt, int first, int last) {

  1412         StringBuilder sb = new StringBuilder();

  1413         for (int i = first; i < last; i++) {

  1414             final char ch = txt.charAt(i);

  1415             switch (ch) {

  1416                 case '/': sb.append('_'); break;

  1417                 case '_': sb.append("_1"); break;

  1418                 case ';': sb.append("_2"); break;

  1419                 case '[': sb.append("_3"); break;

  1420                 default: sb.append(ch); break;

  1421             }

  1422         }

  1423         return sb.toString();

  1424     }

  1426     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1427         StringBuilder name = new StringBuilder();

  1428         if ("<init>".equals(m.getName())) { // NOI18N

  1429             name.append("cons"); // NOI18N

  1430         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1431             name.append("class"); // NOI18N

  1432         } else {

  1433             name.append(m.getName());

  1434         }

  1436         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1437         return name.toString();

  1438     }

  1440     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1441         StringBuilder name = new StringBuilder();

  1442         String descr = mi[2];//mi.getDescriptor();

  1443         String nm= mi[1];

  1444         if ("<init>".equals(nm)) { // NOI18N

  1445             name.append("cons"); // NOI18N

  1446         } else {

  1447             name.append(nm);

  1448         }

  1449         countArgs(descr, returnType, name, cnt);

  1450         return name.toString();

  1451     }

  1453     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1454     throws IOException {

  1455         int methodIndex = readUShortArg(byteCodes, i);

  1456         String[] mi = jc.getFieldInfoName(methodIndex);

  1457         char[] returnType = { 'V' };

  1458         StringBuilder cnt = new StringBuilder();

  1459         String mn = findMethodName(mi, cnt, returnType);

  1461         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1462         final Variable[] vars = new Variable[numArguments];

  1464         for (int j = numArguments - 1; j >= 0; --j) {

  1465             vars[j] = mapper.pop();

  1466         }

  1468         if (returnType[0] != 'V') {

  1469             out.append("var ")

  1470                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1471                .append(" = ");

  1472         }

  1474         final String in = mi[0];

  1475         out.append(accessClass(in.replace('/', '_')));

  1476         out.append("(false).");

  1477         if (mn.startsWith("cons_")) {

  1478             out.append("constructor.");

  1479         }

  1480         out.append(mn);

  1481         if (isStatic) {

  1482             out.append('(');

  1483         } else {

  1484             out.append(".call(");

  1485         }

  1486         if (numArguments > 0) {

  1487             out.append(vars[0]);

  1488             for (int j = 1; j < numArguments; ++j) {

  1489                 out.append(", ");

  1490                 out.append(vars[j]);

  1491             }

  1492         }

  1493         out.append(");");

  1494         i += 2;

  1495         addReference(in);

  1496         return i;

  1497     }

  1498     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1499     throws IOException {

  1500         int methodIndex = readUShortArg(byteCodes, i);

  1501         String[] mi = jc.getFieldInfoName(methodIndex);

  1502         char[] returnType = { 'V' };

  1503         StringBuilder cnt = new StringBuilder();

  1504         String mn = findMethodName(mi, cnt, returnType);

  1506         final int numArguments = cnt.length() + 1;

  1507         final Variable[] vars = new Variable[numArguments];

  1509         for (int j = numArguments - 1; j >= 0; --j) {

  1510             vars[j] = mapper.pop();

  1511         }

  1513         if (returnType[0] != 'V') {

  1514             out.append("var ")

  1515                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1516                .append(" = ");

  1517         }

  1519         out.append(vars[0]).append('.');

  1520         out.append(mn);

  1521         out.append('(');

  1522         String sep = "";

  1523         for (int j = 1; j < numArguments; ++j) {

  1524             out.append(sep);

  1525             out.append(vars[j]);

  1526             sep = ", ";

  1527         }

  1528         out.append(");");

  1529         i += 2;

  1530         return i;

  1531     }

  1533     private void addReference(String cn) throws IOException {

  1534         if (requireReference(cn)) {

  1535             debug(" /* needs " + cn + " */");

  1536         }

  1537     }

  1539     private void outType(String d, StringBuilder out) {

  1540         int arr = 0;

  1541         while (d.charAt(0) == '[') {

  1542             out.append('A');

  1543             d = d.substring(1);

  1544         }

  1545         if (d.charAt(0) == 'L') {

  1546             assert d.charAt(d.length() - 1) == ';';

  1547             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1548         } else {

  1549             out.append(d);

  1550         }

  1551     }

  1553     private String encodeConstant(int entryIndex) throws IOException {

  1554         String[] classRef = { null };

  1555         String s = jc.stringValue(entryIndex, classRef);

  1556         if (classRef[0] != null) {

  1557             if (classRef[0].startsWith("[")) {

  1558                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1559             } else {

  1560                 addReference(classRef[0]);

  1561                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1562             }

  1563         }

  1564         return s;

  1565     }

  1567     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1568         byte[] arr = m.findAnnotationData(true);

  1569         if (arr == null) {

  1570             return null;

  1571         }

  1572         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1573         class P extends AnnotationParser {

  1574             public P() {

  1575                 super(false, true);

  1576             }

  1578             int cnt;

  1579             String[] args = new String[30];

  1580             String body;

  1582             @Override

  1583             protected void visitAttr(String type, String attr, String at, String value) {

  1584                 if (type.equals(jvmType)) {

  1585                     if ("body".equals(attr)) {

  1586                         body = value;

  1587                     } else if ("args".equals(attr)) {

  1588                         args[cnt++] = value;

  1589                     } else {

  1590                         throw new IllegalArgumentException(attr);

  1591                     }

  1592                 }

  1593             }

  1594         }

  1595         P p = new P();

  1596         p.parse(arr, jc);

  1597         if (p.body == null) {

  1598             return null;

  1599         }

  1600         StringBuilder cnt = new StringBuilder();

  1601         final String mn = findMethodName(m, cnt);

  1602         out.append(destObject).append(".").append(mn);

  1603         out.append(" = function(");

  1604         String space = "";

  1605         int index = 0;

  1606         for (int i = 0; i < cnt.length(); i++) {

  1607             out.append(space);

  1608             space = outputArg(out, p.args, index);

  1609             index++;

  1610         }

  1611         out.append(") {").append("\n");

  1612         out.append(p.body);

  1613         out.append("\n}\n");

  1614         return mn;

  1615     }

  1616     private static String className(ClassData jc) {

  1617         //return jc.getName().getInternalName().replace('/', '_');

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

  1619     }

  1621     private static String[] findAnnotation(

  1622         byte[] arr, ClassData cd, final String className,

  1623         final String... attrNames

  1624     ) throws IOException {

  1625         if (arr == null) {

  1626             return null;

  1627         }

  1628         final String[] values = new String[attrNames.length];

  1629         final boolean[] found = { false };

  1630         final String jvmType = "L" + className.replace('.', '/') + ";";

  1631         AnnotationParser ap = new AnnotationParser(false, true) {

  1632             @Override

  1633             protected void visitAttr(String type, String attr, String at, String value) {

  1634                 if (type.equals(jvmType)) {

  1635                     found[0] = true;

  1636                     for (int i = 0; i < attrNames.length; i++) {

  1637                         if (attrNames[i].equals(attr)) {

  1638                             values[i] = value;

  1639                         }

  1640                     }

  1641                 }

  1642             }

  1644         };

  1645         ap.parse(arr, cd);

  1646         return found[0] ? values : null;

  1647     }

  1649     private CharSequence initField(FieldData v) {

  1650         final String is = v.getInternalSig();

  1651         if (is.length() == 1) {

  1652             switch (is.charAt(0)) {

  1653                 case 'S':

  1654                 case 'J':

  1655                 case 'B':

  1656                 case 'Z':

  1657                 case 'C':

  1658                 case 'I': return " = 0;";

  1659                 case 'F':

  1660                 case 'D': return " = 0.0;";

  1661                 default:

  1662                     throw new IllegalStateException(is);

  1663             }

  1664         }

  1665         return " = null;";

  1666     }

  1668     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1669         AnnotationParser ap = new AnnotationParser(true, false) {

  1670             int[] cnt = new int[32];

  1671             int depth;

  1673             @Override

  1674             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1675                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1676                 requireReference(slashType);

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

  1679                     out.append(",");

  1680                 }

  1681                 if (top) {

  1682                     out.append('"').append(attrType).append("\" : ");

  1683                 }

  1684                 out.append("{\n");

  1685                 cnt[++depth] = 0;

  1686             }

  1688             @Override

  1689             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1690                 out.append("\n}\n");

  1691                 depth--;

  1692             }

  1694             @Override

  1695             protected void visitValueStart(String attrName, char type) throws IOException {

  1696                 if (cnt[depth]++ > 0) {

  1697                     out.append(",\n");

  1698                 }

  1699                 cnt[++depth] = 0;

  1700                 if (attrName != null) {

  1701                     out.append(attrName).append(" : ");

  1702                 }

  1703                 if (type == '[') {

  1704                     out.append("[");

  1705                 }

  1706             }

  1708             @Override

  1709             protected void visitValueEnd(String attrName, char type) throws IOException {

  1710                 if (type == '[') {

  1711                     out.append("]");

  1712                 }

  1713                 depth--;

  1714             }

  1716             @Override

  1717             protected void visitAttr(String type, String attr, String attrType, String value)

  1718             throws IOException {

  1719                 if (attr == null && value == null) {

  1720                     return;

  1721                 }

  1722                 out.append(value);

  1723             }

  1725             @Override

  1726             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1727             throws IOException {

  1728                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1729                 requireReference(slashType);

  1731                 out.append(accessClass(slashType.replace('/', '_')))

  1732                    .append("(false).constructor.").append(value);

  1733             }

  1734         };

  1735         ap.parse(data, cd);

  1736     }

  1738     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1739         final String name = args[indx];

  1740         if (name == null) {

  1741             return "";

  1742         }

  1743         if (name.contains(",")) {

  1744             throw new IOException("Wrong parameter with ',': " + name);

  1745         }

  1746         out.append(name);

  1747         return ",";

  1748     }

  1750     private static void emit(final Appendable out,

  1751                              final String format,

  1752                              final CharSequence... params) throws IOException {

  1753         final int length = format.length();

  1755         int processed = 0;

  1756         int paramOffset = format.indexOf('@');

  1757         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1758             final char paramChar = format.charAt(paramOffset + 1);

  1759             if ((paramChar >= '1') && (paramChar <= '9')) {

  1760                 final int paramIndex = paramChar - '0' - 1;

  1762                 out.append(format, processed, paramOffset);

  1763                 out.append(params[paramIndex]);

  1765                 ++paramOffset;

  1766                 processed = paramOffset + 1;

  1767             }

  1769             paramOffset = format.indexOf('@', paramOffset + 1);

  1770         }

  1772         out.append(format, processed, length);

  1773     }

  1775     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1776         out.append("} catch (e) {\n");

  1777         int finallyPC = -1;

  1778         for (TrapData e : traps) {

  1779             if (e == null) {

  1780                 break;

  1781             }

  1782             if (e.catch_cpx != 0) { //not finally

  1783                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1784                 addReference(classInternalName);

  1785                 if ("java/lang/Throwable".equals(classInternalName)) {

  1786                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1787                     out.append("  var stA0 = e;");

  1788                     out.append("} else {");

  1789                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1790                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1791                     out.append("}");

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

  1793                 } else {

  1794                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1795                     out.append("var stA0 = e;");

  1796                     goTo(out, current, e.handler_pc, topMostLabel);

  1797                     out.append("}\n");

  1798                 }

  1799             } else {

  1800                 finallyPC = e.handler_pc;

  1801             }

  1802         }

  1803         if (finallyPC == -1) {

  1804             out.append("throw e;");

  1805         } else {

  1806             out.append("var stA0 = e;");

  1807             goTo(out, current, finallyPC, topMostLabel);

  1808         }

  1809         out.append("\n}");

  1810     }

  1812     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1813         if (to < current) {

  1814             if (canBack < to) {

  1815                 out.append("{ gt = 0; continue X_" + to + "; }");

  1816             } else {

  1817                 out.append("{ gt = " + to + "; continue X_0; }");

  1818             }

  1819         } else {

  1820             out.append("{ gt = " + to + "; break IF; }");

  1821         }

  1822     }

  1824     private static void emitIf(

  1825         Appendable out, String pattern, Variable param,

  1826         int current, int to, int canBack

  1827     ) throws IOException {

  1828         emit(out, pattern, param);

  1829         goTo(out, current, to, canBack);

  1830     }

  1832     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1833         String jvmType;

  1834         switch (atype) {

  1835             case 4: jvmType = "[Z"; break;

  1836             case 5: jvmType = "[C"; break;

  1837             case 6: jvmType = "[F"; break;

  1838             case 7: jvmType = "[D"; break;

  1839             case 8: jvmType = "[B"; break;

  1840             case 9: jvmType = "[S"; break;

  1841             case 10: jvmType = "[I"; break;

  1842             case 11: jvmType = "[J"; break;

  1843             default: throw new IllegalStateException("Array type: " + atype);

  1844         }

  1845         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  1846              smapper.popI(), smapper.pushA(), jvmType);

  1847     }

  1849     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  1850         String typeName = jc.getClassName(type);

  1851         if (typeName.startsWith("[")) {

  1852             typeName = "[" + typeName;

  1853         } else {

  1854             typeName = "[L" + typeName + ";";

  1855         }

  1856         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  1857              smapper.popI(), smapper.pushA(), typeName);

  1858     }

  1860     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  1861         String typeName = jc.getClassName(type);

  1862         int dim = readUByte(byteCodes, ++i);

  1863         StringBuilder dims = new StringBuilder();

  1864         dims.append('[');

  1865         for (int d = 0; d < dim; d++) {

  1866             if (d != 0) {

  1867                 dims.insert(1, ",");

  1868             }

  1869             dims.insert(1, smapper.popI());

  1870         }

  1871         dims.append(']');

  1872         emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  1873              dims.toString(), smapper.pushA(), typeName);

  1874         return i;

  1875     }

  1877     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1878         int table = i / 4 * 4 + 4;

  1879         int dflt = i + readInt4(byteCodes, table);

  1880         table += 4;

  1881         int low = readInt4(byteCodes, table);

  1882         table += 4;

  1883         int high = readInt4(byteCodes, table);

  1884         table += 4;

  1885         out.append("switch (").append(smapper.popI()).append(") {\n");

  1886         while (low <= high) {

  1887             int offset = i + readInt4(byteCodes, table);

  1888             table += 4;

  1889             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  1890             low++;

  1891         }

  1892         out.append("  default: ");

  1893         goTo(out, i, dflt, topMostLabel);

  1894         out.append("\n}");

  1895         i = table - 1;

  1896         return i;

  1897     }

  1899     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1900         int table = i / 4 * 4 + 4;

  1901         int dflt = i + readInt4(byteCodes, table);

  1902         table += 4;

  1903         int n = readInt4(byteCodes, table);

  1904         table += 4;

  1905         out.append("switch (").append(smapper.popI()).append(") {\n");

  1906         while (n-- > 0) {

  1907             int cnstnt = readInt4(byteCodes, table);

  1908             table += 4;

  1909             int offset = i + readInt4(byteCodes, table);

  1910             table += 4;

  1911             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  1912         }

  1913         out.append("  default: ");

  1914         goTo(out, i, dflt, topMostLabel);

  1915         out.append("\n}");

  1916         i = table - 1;

  1917         return i;

  1918     }

  1920     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  1921         final String type = jc.getClassName(indx);

  1922         if (!type.startsWith("[")) {

  1923             emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

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

  1925                  type.replace('/', '_'));

  1926         } else {

  1927             emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1928                 smapper.popA(), smapper.pushI(),

  1929                 type

  1930             );

  1931         }

  1932     }

  1934     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  1935         final String type = jc.getClassName(indx);

  1936         if (!type.startsWith("[")) {

  1937             emit(out,

  1938                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  1939                  smapper.getA(0), type.replace('/', '_'));

  1940         } else {

  1941             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);",

  1942                  smapper.getA(0), type

  1943             );

  1944         }

  1945     }

  1947     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  1948         for (int j = prev; j <= i; j++) {

  1949             out.append(" ");

  1950             final int cc = readUByte(byteCodes, j);

  1951             out.append(Integer.toString(cc));

  1952         }

  1953     }

  1954 }

author	Lubomir Nerad <lubomir.nerad@oracle.com>
	Fri, 26 Apr 2013 18:48:34 +0200
branch	closure
changeset 1029	b1fe994d4267
parent 1020	a6bacea2518f
child 1082	977cc6141083
permissions	-rw-r--r--