hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@9d6130cb464f

     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     protected void declaredField(FieldData fieldData,

    67                                  String destObject,

    68                                  String mangledName) throws IOException {

    69     }

    71     protected void declaredMethod(MethodData methodData,

    72                                   String destObject,

    73                                   String mangledName) throws IOException {

    74     }

    76     /** Prints out a debug message.

    77      *

    78      * @param msg the message

    79      * @return true if the message has been printed

    80      * @throws IOException

    81      */

    82     boolean debug(String msg) throws IOException {

    83         out.append(msg);

    84         return true;

    85     }

    87     /**

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

    89      *

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

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

    92      *

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

    94      */

    96     public String compile(InputStream classFile) throws IOException {

    97         this.jc = new ClassData(classFile);

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

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

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

   101             );

   102         }

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

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

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

   106             "resource", "processByteCode"

   107         );

   108         if (arr != null) {

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

   110                 requireScript(arr[0]);

   111             }

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

   113                 return null;

   114             }

   115         }

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

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

   118             "container", "prototype"

   119         );

   120         StringArray toInitilize = new StringArray();

   121         final String className = className(jc);

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

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

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

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

   126         if (proto == null) {

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

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

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

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

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

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

   133         } else {

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

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

   136                 proto[0] = "p";

   137             }

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

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

   140         }

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

   142             if (v.isStatic()) {

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

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

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

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

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

   148             } else {

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

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

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

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

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

   154                    .append("; };");

   155             }

   157             declaredField(v, "c", "_" + v.getName());

   158         }

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

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

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

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

   163                 "name", "value"

   164             );

   165             if (only != null) {

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

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

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

   169                 }

   170                 continue;

   171             }

   172             String destObject;

   173             String mn;

   174             out.append("\n    ");

   175             if (m.isStatic()) {

   176                 destObject = "c";

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

   178             } else {

   179                 if (m.isConstructor()) {

   180                     destObject = "CLS";

   181                     mn = generateInstanceMethod(destObject, m);

   182                 } else {

   183                     destObject = "c";

   184                     mn = generateInstanceMethod(destObject, m);

   185                 }

   186             }

   187             declaredMethod(m, destObject, mn);

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

   189             if (runAnno != null) {

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

   191                 generateAnno(jc, out, runAnno);

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

   193             }

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

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

   196         }

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

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

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

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

   201         }

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

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

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

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

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

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

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

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

   210         if (classAnno != null) {

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

   212             generateAnno(jc, out, classAnno);

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

   214         }

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

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

   217         }

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

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

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

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

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

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

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

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

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

   227                 "name", "value"

   228             );

   229             if (only != null) {

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

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

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

   233                 }

   234                 continue;

   235             }

   236             if (!v.isStatic()) {

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

   238                     append(className).append('_').

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

   240             }

   241         }

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

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

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

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

   247         declaredClass(jc, className);

   249 //        StringBuilder sb = new StringBuilder();

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

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

   252 //        }

   253         return "";

   254     }

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

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

   257         if (jsb != null) {

   258             return jsb;

   259         }

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

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

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

   263         }

   264         generateMethod(destObject, mn, m);

   265         return mn;

   266     }

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

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

   270         if (jsb != null) {

   271             return jsb;

   272         }

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

   274         generateMethod(destObject, mn, m);

   275         return mn;

   276     }

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

   279             throws IOException {

   280         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   281         TrapDataIterator trap = m.getTrapDataIterator();

   282         final LocalsMapper lmapper =

   283                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   290         if (byteCodes == null) {

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

   292                .append(jc.getClassName()).append('.')

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

   294             out.append("};");

   295             return;

   296         }

   298         final StackMapper smapper = new StackMapper();

   300         if (!m.isStatic()) {

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

   302         }

   304         int lastStackFrame = -1;

   305         TrapData[] previousTrap = null;

   306         boolean wide = false;

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

   309         int openBraces = 0;

   310         int topMostLabel = 0;

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

   312             int prev = i;

   313             stackMapIterator.advanceTo(i);

   314             boolean changeInCatch = trap.advanceTo(i);

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

   316                 if (previousTrap != null) {

   317                     generateCatch(previousTrap, i, topMostLabel);

   318                     previousTrap = null;

   319                 }

   320             }

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

   322                 if (i != 0) {

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

   324                 }

   325                 if (openBraces > 64) {

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

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

   328                     }

   329                     openBraces = 1;

   330                     topMostLabel = i;

   331                 }

   333                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   337                 openBraces++;

   338                 changeInCatch = true;

   339             } else {

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

   341             }

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

   343                 out.append("try {");

   344                 previousTrap = trap.current();

   345             }

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

   347             switch (c) {

   348                 case opc_aload_0:

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

   350                     break;

   351                 case opc_iload_0:

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

   353                     break;

   354                 case opc_lload_0:

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

   356                     break;

   357                 case opc_fload_0:

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

   359                     break;

   360                 case opc_dload_0:

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

   362                     break;

   363                 case opc_aload_1:

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

   365                     break;

   366                 case opc_iload_1:

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

   368                     break;

   369                 case opc_lload_1:

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

   371                     break;

   372                 case opc_fload_1:

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

   374                     break;

   375                 case opc_dload_1:

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

   377                     break;

   378                 case opc_aload_2:

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

   380                     break;

   381                 case opc_iload_2:

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

   383                     break;

   384                 case opc_lload_2:

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

   386                     break;

   387                 case opc_fload_2:

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

   389                     break;

   390                 case opc_dload_2:

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

   392                     break;

   393                 case opc_aload_3:

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

   395                     break;

   396                 case opc_iload_3:

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

   398                     break;

   399                 case opc_lload_3:

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

   401                     break;

   402                 case opc_fload_3:

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

   404                     break;

   405                 case opc_dload_3:

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

   407                     break;

   408                 case opc_iload: {

   409                     ++i;

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

   411                                           : readUByte(byteCodes, i);

   412                     wide = false;

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

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

   415                     break;

   416                 }

   417                 case opc_lload: {

   418                     ++i;

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

   420                                           : readUByte(byteCodes, i);

   421                     wide = false;

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

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

   424                     break;

   425                 }

   426                 case opc_fload: {

   427                     ++i;

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

   429                                           : readUByte(byteCodes, i);

   430                     wide = false;

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

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

   433                     break;

   434                 }

   435                 case opc_dload: {

   436                     ++i;

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

   438                                           : readUByte(byteCodes, i);

   439                     wide = false;

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

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

   442                     break;

   443                 }

   444                 case opc_aload: {

   445                     ++i;

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

   447                                           : readUByte(byteCodes, i);

   448                     wide = false;

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

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

   451                     break;

   452                 }

   453                 case opc_istore: {

   454                     ++i;

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

   456                                           : readUByte(byteCodes, i);

   457                     wide = false;

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

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

   460                     break;

   461                 }

   462                 case opc_lstore: {

   463                     ++i;

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

   465                                           : readUByte(byteCodes, i);

   466                     wide = false;

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

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

   469                     break;

   470                 }

   471                 case opc_fstore: {

   472                     ++i;

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

   474                                           : readUByte(byteCodes, i);

   475                     wide = false;

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

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

   478                     break;

   479                 }

   480                 case opc_dstore: {

   481                     ++i;

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

   483                                           : readUByte(byteCodes, i);

   484                     wide = false;

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

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

   487                     break;

   488                 }

   489                 case opc_astore: {

   490                     ++i;

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

   492                                           : readUByte(byteCodes, i);

   493                     wide = false;

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

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

   496                     break;

   497                 }

   498                 case opc_astore_0:

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

   500                     break;

   501                 case opc_istore_0:

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

   503                     break;

   504                 case opc_lstore_0:

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

   506                     break;

   507                 case opc_fstore_0:

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

   509                     break;

   510                 case opc_dstore_0:

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

   512                     break;

   513                 case opc_astore_1:

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

   515                     break;

   516                 case opc_istore_1:

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

   518                     break;

   519                 case opc_lstore_1:

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

   521                     break;

   522                 case opc_fstore_1:

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

   524                     break;

   525                 case opc_dstore_1:

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

   527                     break;

   528                 case opc_astore_2:

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

   530                     break;

   531                 case opc_istore_2:

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

   533                     break;

   534                 case opc_lstore_2:

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

   536                     break;

   537                 case opc_fstore_2:

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

   539                     break;

   540                 case opc_dstore_2:

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

   542                     break;

   543                 case opc_astore_3:

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

   545                     break;

   546                 case opc_istore_3:

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

   548                     break;

   549                 case opc_lstore_3:

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

   551                     break;

   552                 case opc_fstore_3:

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

   554                     break;

   555                 case opc_dstore_3:

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

   557                     break;

   558                 case opc_iadd:

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

   560                     break;

   561                 case opc_ladd:

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

   563                     break;

   564                 case opc_fadd:

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

   566                     break;

   567                 case opc_dadd:

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

   569                     break;

   570                 case opc_isub:

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

   572                     break;

   573                 case opc_lsub:

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

   575                     break;

   576                 case opc_fsub:

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

   578                     break;

   579                 case opc_dsub:

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

   581                     break;

   582                 case opc_imul:

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

   584                     break;

   585                 case opc_lmul:

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

   587                     break;

   588                 case opc_fmul:

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

   590                     break;

   591                 case opc_dmul:

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

   593                     break;

   594                 case opc_idiv:

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

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

   597                     break;

   598                 case opc_ldiv:

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

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

   601                     break;

   602                 case opc_fdiv:

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

   604                     break;

   605                 case opc_ddiv:

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

   607                     break;

   608                 case opc_irem:

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

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

   611                     break;

   612                 case opc_lrem:

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

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

   615                     break;

   616                 case opc_frem:

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

   618                     break;

   619                 case opc_drem:

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

   621                     break;

   622                 case opc_iand:

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

   624                     break;

   625                 case opc_land:

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

   627                     break;

   628                 case opc_ior:

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

   630                     break;

   631                 case opc_lor:

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

   633                     break;

   634                 case opc_ixor:

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

   636                     break;

   637                 case opc_lxor:

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

   639                     break;

   640                 case opc_ineg:

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

   642                     break;

   643                 case opc_lneg:

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

   645                     break;

   646                 case opc_fneg:

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

   648                     break;

   649                 case opc_dneg:

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

   651                     break;

   652                 case opc_ishl:

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

   654                     break;

   655                 case opc_lshl:

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

   657                     break;

   658                 case opc_ishr:

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

   660                     break;

   661                 case opc_lshr:

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

   663                     break;

   664                 case opc_iushr:

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

   666                     break;

   667                 case opc_lushr:

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

   669                     break;

   670                 case opc_iinc: {

   671                     ++i;

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

   673                                              : readUByte(byteCodes, i);

   674                     ++i;

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

   676                                             : byteCodes[i];

   677                     wide = false;

   678                     if (incrBy == 1) {

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

   680                     } else {

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

   682                              lmapper.getI(varIndx),

   683                              Integer.toString(incrBy));

   684                     }

   685                     break;

   686                 }

   687                 case opc_return:

   688                     emit(out, "return;");

   689                     break;

   690                 case opc_ireturn:

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

   692                     break;

   693                 case opc_lreturn:

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

   695                     break;

   696                 case opc_freturn:

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

   698                     break;

   699                 case opc_dreturn:

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

   701                     break;

   702                 case opc_areturn:

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

   704                     break;

   705                 case opc_i2l:

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

   707                     break;

   708                 case opc_i2f:

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

   710                     break;

   711                 case opc_i2d:

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

   713                     break;

   714                 case opc_l2i:

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

   716                     break;

   717                     // max int check?

   718                 case opc_l2f:

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

   720                     break;

   721                 case opc_l2d:

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

   723                     break;

   724                 case opc_f2d:

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

   726                     break;

   727                 case opc_d2f:

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

   729                     break;

   730                 case opc_f2i:

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

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

   733                     break;

   734                 case opc_f2l:

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

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

   737                     break;

   738                 case opc_d2i:

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

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

   741                     break;

   742                 case opc_d2l:

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

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

   745                     break;

   746                 case opc_i2b:

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

   748                     break;

   749                 case opc_i2c:

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

   751                     break;

   752                 case opc_i2s:

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

   754                     break;

   755                 case opc_aconst_null:

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

   757                     break;

   758                 case opc_iconst_m1:

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

   760                     break;

   761                 case opc_iconst_0:

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

   763                     break;

   764                 case opc_dconst_0:

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

   766                     break;

   767                 case opc_lconst_0:

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

   769                     break;

   770                 case opc_fconst_0:

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

   772                     break;

   773                 case opc_iconst_1:

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

   775                     break;

   776                 case opc_lconst_1:

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

   778                     break;

   779                 case opc_fconst_1:

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

   781                     break;

   782                 case opc_dconst_1:

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

   784                     break;

   785                 case opc_iconst_2:

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

   787                     break;

   788                 case opc_fconst_2:

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

   790                     break;

   791                 case opc_iconst_3:

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

   793                     break;

   794                 case opc_iconst_4:

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

   796                     break;

   797                 case opc_iconst_5:

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

   799                     break;

   800                 case opc_ldc: {

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

   802                     String v = encodeConstant(indx);

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

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

   805                     break;

   806                 }

   807                 case opc_ldc_w:

   808                 case opc_ldc2_w: {

   809                     int indx = readUShortArg(byteCodes, i);

   810                     i += 2;

   811                     String v = encodeConstant(indx);

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

   813                     if (type == VarType.LONG) {

   814                         final Long lv = new Long(v);

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

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

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

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

   819                     } else {

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

   821                     }

   822                     break;

   823                 }

   824                 case opc_lcmp:

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

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

   827                     break;

   828                 case opc_fcmpl:

   829                 case opc_fcmpg:

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

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

   832                     break;

   833                 case opc_dcmpl:

   834                 case opc_dcmpg:

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

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

   837                     break;

   838                 case opc_if_acmpeq:

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

   840                                    "===", topMostLabel);

   841                     break;

   842                 case opc_if_acmpne:

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

   844                                    "!==", topMostLabel);

   845                     break;

   846                 case opc_if_icmpeq:

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

   848                                    "==", topMostLabel);

   849                     break;

   850                 case opc_ifeq: {

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

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

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

   854                     i += 2;

   855                     break;

   856                 }

   857                 case opc_ifne: {

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

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

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

   861                     i += 2;

   862                     break;

   863                 }

   864                 case opc_iflt: {

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

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

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

   868                     i += 2;

   869                     break;

   870                 }

   871                 case opc_ifle: {

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

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

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

   875                     i += 2;

   876                     break;

   877                 }

   878                 case opc_ifgt: {

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

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

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

   882                     i += 2;

   883                     break;

   884                 }

   885                 case opc_ifge: {

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

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

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

   889                     i += 2;

   890                     break;

   891                 }

   892                 case opc_ifnonnull: {

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

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

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

   896                     i += 2;

   897                     break;

   898                 }

   899                 case opc_ifnull: {

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

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

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

   903                     i += 2;

   904                     break;

   905                 }

   906                 case opc_if_icmpne:

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

   908                                    "!=", topMostLabel);

   909                     break;

   910                 case opc_if_icmplt:

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

   912                                    "<", topMostLabel);

   913                     break;

   914                 case opc_if_icmple:

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

   916                                    "<=", topMostLabel);

   917                     break;

   918                 case opc_if_icmpgt:

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

   920                                    ">", topMostLabel);

   921                     break;

   922                 case opc_if_icmpge:

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

   924                                    ">=", topMostLabel);

   925                     break;

   926                 case opc_goto: {

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

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

   929                     i += 2;

   930                     break;

   931                 }

   932                 case opc_lookupswitch: {

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

   934                     break;

   935                 }

   936                 case opc_tableswitch: {

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

   938                     break;

   939                 }

   940                 case opc_invokeinterface: {

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

   942                     break;

   943                 }

   944                 case opc_invokevirtual:

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

   946                     break;

   947                 case opc_invokespecial:

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

   949                     break;

   950                 case opc_invokestatic:

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

   952                     break;

   953                 case opc_new: {

   954                     int indx = readUShortArg(byteCodes, i);

   955                     String ci = jc.getClassName(indx);

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

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

   958                     addReference(ci);

   959                     i += 2;

   960                     break;

   961                 }

   962                 case opc_newarray:

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

   964                     generateNewArray(atype, smapper);

   965                     break;

   966                 case opc_anewarray: {

   967                     int type = readUShortArg(byteCodes, i);

   968                     i += 2;

   969                     generateANewArray(type, smapper);

   970                     break;

   971                 }

   972                 case opc_multianewarray: {

   973                     int type = readUShortArg(byteCodes, i);

   974                     i += 2;

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

   976                     break;

   977                 }

   978                 case opc_arraylength:

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

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

   981                     break;

   982                 case opc_lastore:

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

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

   985                     break;

   986                 case opc_fastore:

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

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

   989                     break;

   990                 case opc_dastore:

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

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

   993                     break;

   994                 case opc_aastore:

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

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

   997                     break;

   998                 case opc_iastore:

   999                 case opc_bastore:

  1000                 case opc_castore:

  1001                 case opc_sastore:

  1002                     emit(out, "@3.at(@2, @1);",

  1003                          smapper.popI(), smapper.popI(), smapper.popA());

  1004                     break;

  1005                 case opc_laload:

  1006                     emit(out, "var @3 = @2.at(@1);",

  1007                          smapper.popI(), smapper.popA(), smapper.pushL());

  1008                     break;

  1009                 case opc_faload:

  1010                     emit(out, "var @3 = @2.at(@1);",

  1011                          smapper.popI(), smapper.popA(), smapper.pushF());

  1012                     break;

  1013                 case opc_daload:

  1014                     emit(out, "var @3 = @2.at(@1);",

  1015                          smapper.popI(), smapper.popA(), smapper.pushD());

  1016                     break;

  1017                 case opc_aaload:

  1018                     emit(out, "var @3 = @2.at(@1);",

  1019                          smapper.popI(), smapper.popA(), smapper.pushA());

  1020                     break;

  1021                 case opc_iaload:

  1022                 case opc_baload:

  1023                 case opc_caload:

  1024                 case opc_saload:

  1025                     emit(out, "var @3 = @2.at(@1);",

  1026                          smapper.popI(), smapper.popA(), smapper.pushI());

  1027                     break;

  1028                 case opc_pop:

  1029                 case opc_pop2:

  1030                     smapper.pop(1);

  1031                     debug("/* pop */");

  1032                     break;

  1033                 case opc_dup: {

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

  1035                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1036                     break;

  1037                 }

  1038                 case opc_dup2: {

  1039                     final Variable vi1 = smapper.get(0);

  1041                     if (vi1.isCategory2()) {

  1042                         emit(out, "var @1 = @2;",

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

  1044                     } else {

  1045                         final Variable vi2 = smapper.get(1);

  1046                         emit(out, "var @1 = @2, @3 = @4;",

  1047                              smapper.pushT(vi2.getType()), vi2,

  1048                              smapper.pushT(vi1.getType()), vi1);

  1049                     }

  1050                     break;

  1051                 }

  1052                 case opc_dup_x1: {

  1053                     final Variable vi1 = smapper.pop();

  1054                     final Variable vi2 = smapper.pop();

  1055                     final Variable vo3 = smapper.pushT(vi1.getType());

  1056                     final Variable vo2 = smapper.pushT(vi2.getType());

  1057                     final Variable vo1 = smapper.pushT(vi1.getType());

  1059                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1060                          vo1, vi1, vo2, vi2, vo3, vo1);

  1061                     break;

  1062                 }

  1063                 case opc_dup2_x1: {

  1064                     final Variable vi1 = smapper.pop();

  1065                     final Variable vi2 = smapper.pop();

  1067                     if (vi1.isCategory2()) {

  1068                         final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1074                     } else {

  1075                         final Variable vi3 = smapper.pop();

  1076                         final Variable vo5 = smapper.pushT(vi2.getType());

  1077                         final Variable vo4 = smapper.pushT(vi1.getType());

  1078                         final Variable vo3 = smapper.pushT(vi3.getType());

  1079                         final Variable vo2 = smapper.pushT(vi2.getType());

  1080                         final Variable vo1 = smapper.pushT(vi1.getType());

  1082                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1083                              vo1, vi1, vo2, vi2, vo3, vi3);

  1084                         emit(out, " @1 = @2, @3 = @4;",

  1085                              vo4, vo1, vo5, vo2);

  1086                     }

  1087                     break;

  1088                 }

  1089                 case opc_dup_x2: {

  1090                     final Variable vi1 = smapper.pop();

  1091                     final Variable vi2 = smapper.pop();

  1093                     if (vi2.isCategory2()) {

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

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

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

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

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

  1100                     } else {

  1101                         final Variable vi3 = smapper.pop();

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

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

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

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

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

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

  1109                     }

  1110                     break;

  1111                 }

  1112                 case opc_dup2_x2: {

  1113                     final Variable vi1 = smapper.pop();

  1114                     final Variable vi2 = smapper.pop();

  1116                     if (vi1.isCategory2()) {

  1117                         if (vi2.isCategory2()) {

  1118                             final Variable vo3 = smapper.pushT(vi1.getType());

  1119                             final Variable vo2 = smapper.pushT(vi2.getType());

  1120                             final Variable vo1 = smapper.pushT(vi1.getType());

  1122                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1123                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1124                         } else {

  1125                             final Variable vi3 = smapper.pop();

  1126                             final Variable vo4 = smapper.pushT(vi1.getType());

  1127                             final Variable vo3 = smapper.pushT(vi3.getType());

  1128                             final Variable vo2 = smapper.pushT(vi2.getType());

  1129                             final Variable vo1 = smapper.pushT(vi1.getType());

  1131                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1132                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1133                         }

  1134                     } else {

  1135                         final Variable vi3 = smapper.pop();

  1137                         if (vi3.isCategory2()) {

  1138                             final Variable vo5 = smapper.pushT(vi2.getType());

  1139                             final Variable vo4 = smapper.pushT(vi1.getType());

  1140                             final Variable vo3 = smapper.pushT(vi3.getType());

  1141                             final Variable vo2 = smapper.pushT(vi2.getType());

  1142                             final Variable vo1 = smapper.pushT(vi1.getType());

  1144                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1145                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1146                             emit(out, " @1 = @2, @3 = @4;",

  1147                                  vo4, vo1, vo5, vo2);

  1148                         } else {

  1149                             final Variable vi4 = smapper.pop();

  1150                             final Variable vo6 = smapper.pushT(vi2.getType());

  1151                             final Variable vo5 = smapper.pushT(vi1.getType());

  1152                             final Variable vo4 = smapper.pushT(vi4.getType());

  1153                             final Variable vo3 = smapper.pushT(vi3.getType());

  1154                             final Variable vo2 = smapper.pushT(vi2.getType());

  1155                             final Variable vo1 = smapper.pushT(vi1.getType());

  1157                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1158                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1159                             emit(out, " @1 = @2, @3 = @4;",

  1160                                  vo5, vo1, vo6, vo2);

  1161                         }

  1162                     }

  1163                     break;

  1164                 }

  1165                 case opc_swap: {

  1166                     final Variable vi1 = smapper.get(0);

  1167                     final Variable vi2 = smapper.get(1);

  1169                     if (vi1.getType() == vi2.getType()) {

  1170                         final Variable tmp = smapper.pushT(vi1.getType());

  1172                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1173                              tmp, vi1, vi2);

  1174                         smapper.pop(1);

  1175                     } else {

  1176                         smapper.pop(2);

  1177                         smapper.pushT(vi1.getType());

  1178                         smapper.pushT(vi2.getType());

  1179                     }

  1180                     break;

  1181                 }

  1182                 case opc_bipush:

  1183                     emit(out, "var @1 = @2;",

  1184                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1185                     break;

  1186                 case opc_sipush:

  1187                     emit(out, "var @1 = @2;",

  1188                          smapper.pushI(),

  1189                          Integer.toString(readShortArg(byteCodes, i)));

  1190                     i += 2;

  1191                     break;

  1192                 case opc_getfield: {

  1193                     int indx = readUShortArg(byteCodes, i);

  1194                     String[] fi = jc.getFieldInfoName(indx);

  1195                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1196                     final String mangleClass = mangleSig(fi[0]);

  1197                     final String mangleClassAccess = accessClass(mangleClass);

  1198                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1199                          smapper.popA(),

  1200                          smapper.pushT(type), fi[1], mangleClassAccess

  1201                     );

  1202                     i += 2;

  1203                     break;

  1204                 }

  1205                 case opc_putfield: {

  1206                     int indx = readUShortArg(byteCodes, i);

  1207                     String[] fi = jc.getFieldInfoName(indx);

  1208                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1209                     final String mangleClass = mangleSig(fi[0]);

  1210                     final String mangleClassAccess = accessClass(mangleClass);

  1211                     emit(out, "@4(false)._@3.call(@2, @1);",

  1212                          smapper.popT(type),

  1213                          smapper.popA(), fi[1],

  1214                          mangleClassAccess

  1215                     );

  1216                     i += 2;

  1217                     break;

  1218                 }

  1219                 case opc_getstatic: {

  1220                     int indx = readUShortArg(byteCodes, i);

  1221                     String[] fi = jc.getFieldInfoName(indx);

  1222                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1223                     emit(out, "var @1 = @2(false)._@3();",

  1224                          smapper.pushT(type),

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

  1226                     i += 2;

  1227                     addReference(fi[0]);

  1228                     break;

  1229                 }

  1230                 case opc_putstatic: {

  1231                     int indx = readUShortArg(byteCodes, i);

  1232                     String[] fi = jc.getFieldInfoName(indx);

  1233                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1234                     emit(out, "@1(false)._@2(@3);",

  1235                          accessClass(fi[0].replace('/', '_')), fi[1],

  1236                          smapper.popT(type));

  1237                     i += 2;

  1238                     addReference(fi[0]);

  1239                     break;

  1240                 }

  1241                 case opc_checkcast: {

  1242                     int indx = readUShortArg(byteCodes, i);

  1243                     generateCheckcast(indx, smapper);

  1244                     i += 2;

  1245                     break;

  1246                 }

  1247                 case opc_instanceof: {

  1248                     int indx = readUShortArg(byteCodes, i);

  1249                     generateInstanceOf(indx, smapper);

  1250                     i += 2;

  1251                     break;

  1252                 }

  1253                 case opc_athrow: {

  1254                     final Variable v = smapper.popA();

  1255                     smapper.clear();

  1257                     emit(out, "{ var @1 = @2; throw @2; }",

  1258                          smapper.pushA(), v);

  1259                     break;

  1260                 }

  1262                 case opc_monitorenter: {

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

  1264                     smapper.popA();

  1265                     break;

  1266                 }

  1268                 case opc_monitorexit: {

  1269                     out.append("/* monitor exit */");

  1270                     smapper.popA();

  1271                     break;

  1272                 }

  1274                 case opc_wide:

  1275                     wide = true;

  1276                     break;

  1278                 default: {

  1279                     wide = false;

  1280                     emit(out, "throw 'unknown bytecode @1';",

  1281                          Integer.toString(c));

  1282                 }

  1283             }

  1284             if (debug(" //")) {

  1285                 generateByteCodeComment(prev, i, byteCodes);

  1286             }

  1287             out.append("\n");

  1288         }

  1289         if (previousTrap != null) {

  1290             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1291         }

  1292         out.append("\n    }\n");

  1293         while (openBraces-- > 0) {

  1294             out.append('}');

  1295         }

  1296         out.append("\n};");

  1297     }

  1299     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1300         int indx = i + readShortArg(byteCodes, i);

  1301         out.append("if (").append(v1)

  1302            .append(' ').append(test).append(' ')

  1303            .append(v2).append(") ");

  1304         goTo(out, i, indx, topMostLabel);

  1305         return i + 2;

  1306     }

  1308     private int readInt4(byte[] byteCodes, int offset) {

  1309         final int d = byteCodes[offset + 0] << 24;

  1310         final int c = byteCodes[offset + 1] << 16;

  1311         final int b = byteCodes[offset + 2] << 8;

  1312         final int a = byteCodes[offset + 3];

  1313         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1314     }

  1315     private static int readUByte(byte[] byteCodes, int offset) {

  1316         return byteCodes[offset] & 0xff;

  1317     }

  1319     private static int readUShort(byte[] byteCodes, int offset) {

  1320         return ((byteCodes[offset] & 0xff) << 8)

  1321                     | (byteCodes[offset + 1] & 0xff);

  1322     }

  1323     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1324         return readUShort(byteCodes, offsetInstruction + 1);

  1325     }

  1327     private static int readShort(byte[] byteCodes, int offset) {

  1328         int signed = byteCodes[offset];

  1329         byte b0 = (byte)signed;

  1330         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1331     }

  1332     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1333         return readShort(byteCodes, offsetInstruction + 1);

  1334     }

  1336     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1337         int i = 0;

  1338         Boolean count = null;

  1339         boolean array = false;

  1340         sig.append("__");

  1341         int firstPos = sig.length();

  1342         while (i < descriptor.length()) {

  1343             char ch = descriptor.charAt(i++);

  1344             switch (ch) {

  1345                 case '(':

  1346                     count = true;

  1347                     continue;

  1348                 case ')':

  1349                     count = false;

  1350                     continue;

  1351                 case 'B':

  1352                 case 'C':

  1353                 case 'D':

  1354                 case 'F':

  1355                 case 'I':

  1356                 case 'J':

  1357                 case 'S':

  1358                 case 'Z':

  1359                     if (count) {

  1360                         if (array) {

  1361                             sig.append("_3");

  1362                         }

  1363                         sig.append(ch);

  1364                         if (ch == 'J' || ch == 'D') {

  1365                             cnt.append('1');

  1366                         } else {

  1367                             cnt.append('0');

  1368                         }

  1369                     } else {

  1370                         sig.insert(firstPos, ch);

  1371                         if (array) {

  1372                             returnType[0] = '[';

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

  1374                         } else {

  1375                             returnType[0] = ch;

  1376                         }

  1377                     }

  1378                     array = false;

  1379                     continue;

  1380                 case 'V':

  1381                     assert !count;

  1382                     returnType[0] = 'V';

  1383                     sig.insert(firstPos, 'V');

  1384                     continue;

  1385                 case 'L':

  1386                     int next = descriptor.indexOf(';', i);

  1387                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1388                     if (count) {

  1389                         if (array) {

  1390                             sig.append("_3");

  1391                         }

  1392                         sig.append(realSig);

  1393                         cnt.append('0');

  1394                     } else {

  1395                         sig.insert(firstPos, realSig);

  1396                         if (array) {

  1397                             sig.insert(firstPos, "_3");

  1398                         }

  1399                         returnType[0] = 'L';

  1400                     }

  1401                     i = next + 1;

  1402                     array = false;

  1403                     continue;

  1404                 case '[':

  1405                     array = true;

  1406                     continue;

  1407                 default:

  1408                     throw new IllegalStateException("Invalid char: " + ch);

  1409             }

  1410         }

  1411     }

  1413     static String mangleSig(String sig) {

  1414         return mangleSig(sig, 0, sig.length());

  1415     }

  1417     private static String mangleSig(String txt, int first, int last) {

  1418         StringBuilder sb = new StringBuilder();

  1419         for (int i = first; i < last; i++) {

  1420             final char ch = txt.charAt(i);

  1421             switch (ch) {

  1422                 case '/': sb.append('_'); break;

  1423                 case '_': sb.append("_1"); break;

  1424                 case ';': sb.append("_2"); break;

  1425                 case '[': sb.append("_3"); break;

  1426                 default: sb.append(ch); break;

  1427             }

  1428         }

  1429         return sb.toString();

  1430     }

  1432     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1433         StringBuilder name = new StringBuilder();

  1434         if ("<init>".equals(m.getName())) { // NOI18N

  1435             name.append("cons"); // NOI18N

  1436         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1437             name.append("class"); // NOI18N

  1438         } else {

  1439             name.append(m.getName());

  1440         }

  1442         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1443         return name.toString();

  1444     }

  1446     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1447         StringBuilder name = new StringBuilder();

  1448         String descr = mi[2];//mi.getDescriptor();

  1449         String nm= mi[1];

  1450         if ("<init>".equals(nm)) { // NOI18N

  1451             name.append("cons"); // NOI18N

  1452         } else {

  1453             name.append(nm);

  1454         }

  1455         countArgs(descr, returnType, name, cnt);

  1456         return name.toString();

  1457     }

  1459     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1460     throws IOException {

  1461         int methodIndex = readUShortArg(byteCodes, i);

  1462         String[] mi = jc.getFieldInfoName(methodIndex);

  1463         char[] returnType = { 'V' };

  1464         StringBuilder cnt = new StringBuilder();

  1465         String mn = findMethodName(mi, cnt, returnType);

  1467         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1468         final Variable[] vars = new Variable[numArguments];

  1470         for (int j = numArguments - 1; j >= 0; --j) {

  1471             vars[j] = mapper.pop();

  1472         }

  1474         if (returnType[0] != 'V') {

  1475             out.append("var ")

  1476                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1477                .append(" = ");

  1478         }

  1480         final String in = mi[0];

  1481         out.append(accessClass(in.replace('/', '_')));

  1482         out.append("(false).");

  1483         if (mn.startsWith("cons_")) {

  1484             out.append("constructor.");

  1485         }

  1486         out.append(mn);

  1487         if (isStatic) {

  1488             out.append('(');

  1489         } else {

  1490             out.append(".call(");

  1491         }

  1492         if (numArguments > 0) {

  1493             out.append(vars[0]);

  1494             for (int j = 1; j < numArguments; ++j) {

  1495                 out.append(", ");

  1496                 out.append(vars[j]);

  1497             }

  1498         }

  1499         out.append(");");

  1500         i += 2;

  1501         addReference(in);

  1502         return i;

  1503     }

  1504     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1505     throws IOException {

  1506         int methodIndex = readUShortArg(byteCodes, i);

  1507         String[] mi = jc.getFieldInfoName(methodIndex);

  1508         char[] returnType = { 'V' };

  1509         StringBuilder cnt = new StringBuilder();

  1510         String mn = findMethodName(mi, cnt, returnType);

  1512         final int numArguments = cnt.length() + 1;

  1513         final Variable[] vars = new Variable[numArguments];

  1515         for (int j = numArguments - 1; j >= 0; --j) {

  1516             vars[j] = mapper.pop();

  1517         }

  1519         if (returnType[0] != 'V') {

  1520             out.append("var ")

  1521                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1522                .append(" = ");

  1523         }

  1525         out.append(vars[0]).append('.');

  1526         out.append(mn);

  1527         out.append('(');

  1528         String sep = "";

  1529         for (int j = 1; j < numArguments; ++j) {

  1530             out.append(sep);

  1531             out.append(vars[j]);

  1532             sep = ", ";

  1533         }

  1534         out.append(");");

  1535         i += 2;

  1536         return i;

  1537     }

  1539     private void addReference(String cn) throws IOException {

  1540         if (requireReference(cn)) {

  1541             debug(" /* needs " + cn + " */");

  1542         }

  1543     }

  1545     private void outType(String d, StringBuilder out) {

  1546         int arr = 0;

  1547         while (d.charAt(0) == '[') {

  1548             out.append('A');

  1549             d = d.substring(1);

  1550         }

  1551         if (d.charAt(0) == 'L') {

  1552             assert d.charAt(d.length() - 1) == ';';

  1553             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1554         } else {

  1555             out.append(d);

  1556         }

  1557     }

  1559     private String encodeConstant(int entryIndex) throws IOException {

  1560         String[] classRef = { null };

  1561         String s = jc.stringValue(entryIndex, classRef);

  1562         if (classRef[0] != null) {

  1563             if (classRef[0].startsWith("[")) {

  1564                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1565             } else {

  1566                 addReference(classRef[0]);

  1567                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1568             }

  1569         }

  1570         return s;

  1571     }

  1573     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1574         byte[] arr = m.findAnnotationData(true);

  1575         if (arr == null) {

  1576             return null;

  1577         }

  1578         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1579         class P extends AnnotationParser {

  1580             public P() {

  1581                 super(false, true);

  1582             }

  1584             int cnt;

  1585             String[] args = new String[30];

  1586             String body;

  1588             @Override

  1589             protected void visitAttr(String type, String attr, String at, String value) {

  1590                 if (type.equals(jvmType)) {

  1591                     if ("body".equals(attr)) {

  1592                         body = value;

  1593                     } else if ("args".equals(attr)) {

  1594                         args[cnt++] = value;

  1595                     } else {

  1596                         throw new IllegalArgumentException(attr);

  1597                     }

  1598                 }

  1599             }

  1600         }

  1601         P p = new P();

  1602         p.parse(arr, jc);

  1603         if (p.body == null) {

  1604             return null;

  1605         }

  1606         StringBuilder cnt = new StringBuilder();

  1607         final String mn = findMethodName(m, cnt);

  1608         out.append(destObject).append(".").append(mn);

  1609         out.append(" = function(");

  1610         String space = "";

  1611         int index = 0;

  1612         for (int i = 0; i < cnt.length(); i++) {

  1613             out.append(space);

  1614             space = outputArg(out, p.args, index);

  1615             index++;

  1616         }

  1617         out.append(") {").append("\n");

  1618         out.append(p.body);

  1619         out.append("\n}\n");

  1620         return mn;

  1621     }

  1622     private static String className(ClassData jc) {

  1623         //return jc.getName().getInternalName().replace('/', '_');

  1624         return jc.getClassName().replace('/', '_');

  1625     }

  1627     private static String[] findAnnotation(

  1628         byte[] arr, ClassData cd, final String className,

  1629         final String... attrNames

  1630     ) throws IOException {

  1631         if (arr == null) {

  1632             return null;

  1633         }

  1634         final String[] values = new String[attrNames.length];

  1635         final boolean[] found = { false };

  1636         final String jvmType = "L" + className.replace('.', '/') + ";";

  1637         AnnotationParser ap = new AnnotationParser(false, true) {

  1638             @Override

  1639             protected void visitAttr(String type, String attr, String at, String value) {

  1640                 if (type.equals(jvmType)) {

  1641                     found[0] = true;

  1642                     for (int i = 0; i < attrNames.length; i++) {

  1643                         if (attrNames[i].equals(attr)) {

  1644                             values[i] = value;

  1645                         }

  1646                     }

  1647                 }

  1648             }

  1650         };

  1651         ap.parse(arr, cd);

  1652         return found[0] ? values : null;

  1653     }

  1655     private CharSequence initField(FieldData v) {

  1656         final String is = v.getInternalSig();

  1657         if (is.length() == 1) {

  1658             switch (is.charAt(0)) {

  1659                 case 'S':

  1660                 case 'J':

  1661                 case 'B':

  1662                 case 'Z':

  1663                 case 'C':

  1664                 case 'I': return " = 0;";

  1665                 case 'F':

  1666                 case 'D': return " = 0.0;";

  1667                 default:

  1668                     throw new IllegalStateException(is);

  1669             }

  1670         }

  1671         return " = null;";

  1672     }

  1674     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1675         AnnotationParser ap = new AnnotationParser(true, false) {

  1676             int[] cnt = new int[32];

  1677             int depth;

  1679             @Override

  1680             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1681                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1682                 requireReference(slashType);

  1684                 if (cnt[depth]++ > 0) {

  1685                     out.append(",");

  1686                 }

  1687                 if (top) {

  1688                     out.append('"').append(attrType).append("\" : ");

  1689                 }

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

  1691                 cnt[++depth] = 0;

  1692             }

  1694             @Override

  1695             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1696                 out.append("\n}\n");

  1697                 depth--;

  1698             }

  1700             @Override

  1701             protected void visitValueStart(String attrName, char type) throws IOException {

  1702                 if (cnt[depth]++ > 0) {

  1703                     out.append(",\n");

  1704                 }

  1705                 cnt[++depth] = 0;

  1706                 if (attrName != null) {

  1707                     out.append(attrName).append(" : ");

  1708                 }

  1709                 if (type == '[') {

  1710                     out.append("[");

  1711                 }

  1712             }

  1714             @Override

  1715             protected void visitValueEnd(String attrName, char type) throws IOException {

  1716                 if (type == '[') {

  1717                     out.append("]");

  1718                 }

  1719                 depth--;

  1720             }

  1722             @Override

  1723             protected void visitAttr(String type, String attr, String attrType, String value)

  1724             throws IOException {

  1725                 if (attr == null && value == null) {

  1726                     return;

  1727                 }

  1728                 out.append(value);

  1729             }

  1731             @Override

  1732             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1733             throws IOException {

  1734                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1735                 requireReference(slashType);

  1737                 out.append(accessClass(slashType.replace('/', '_')))

  1738                    .append("(false).constructor.").append(value);

  1739             }

  1740         };

  1741         ap.parse(data, cd);

  1742     }

  1744     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1745         final String name = args[indx];

  1746         if (name == null) {

  1747             return "";

  1748         }

  1749         if (name.contains(",")) {

  1750             throw new IOException("Wrong parameter with ',': " + name);

  1751         }

  1752         out.append(name);

  1753         return ",";

  1754     }

  1756     private static void emit(final Appendable out,

  1757                              final String format,

  1758                              final CharSequence... params) throws IOException {

  1759         final int length = format.length();

  1761         int processed = 0;

  1762         int paramOffset = format.indexOf('@');

  1763         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1764             final char paramChar = format.charAt(paramOffset + 1);

  1765             if ((paramChar >= '1') && (paramChar <= '9')) {

  1766                 final int paramIndex = paramChar - '0' - 1;

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

  1769                 out.append(params[paramIndex]);

  1771                 ++paramOffset;

  1772                 processed = paramOffset + 1;

  1773             }

  1775             paramOffset = format.indexOf('@', paramOffset + 1);

  1776         }

  1778         out.append(format, processed, length);

  1779     }

  1781     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1782         out.append("} catch (e) {\n");

  1783         int finallyPC = -1;

  1784         for (TrapData e : traps) {

  1785             if (e == null) {

  1786                 break;

  1787             }

  1788             if (e.catch_cpx != 0) { //not finally

  1789                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1790                 addReference(classInternalName);

  1791                 if ("java/lang/Throwable".equals(classInternalName)) {

  1792                     out.append("if (e['$instOf_java_lang_Throwable']) {");

  1793                     out.append("  var stA0 = e;");

  1794                     out.append("} else {");

  1795                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1796                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1797                     out.append("}");

  1798                     goTo(out, current, e.handler_pc, topMostLabel);

  1799                 } else {

  1800                     out.append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  1801                     out.append("var stA0 = e;");

  1802                     goTo(out, current, e.handler_pc, topMostLabel);

  1803                     out.append("}\n");

  1804                 }

  1805             } else {

  1806                 finallyPC = e.handler_pc;

  1807             }

  1808         }

  1809         if (finallyPC == -1) {

  1810             out.append("throw e;");

  1811         } else {

  1812             out.append("var stA0 = e;");

  1813             goTo(out, current, finallyPC, topMostLabel);

  1814         }

  1815         out.append("\n}");

  1816     }

  1818     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1819         if (to < current) {

  1820             if (canBack < to) {

  1821                 out.append("{ gt = 0; continue X_" + to + "; }");

  1822             } else {

  1823                 out.append("{ gt = " + to + "; continue X_0; }");

  1824             }

  1825         } else {

  1826             out.append("{ gt = " + to + "; break IF; }");

  1827         }

  1828     }

  1830     private static void emitIf(

  1831         Appendable out, String pattern, Variable param,

  1832         int current, int to, int canBack

  1833     ) throws IOException {

  1834         emit(out, pattern, param);

  1835         goTo(out, current, to, canBack);

  1836     }

  1838     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1839         String jvmType;

  1840         switch (atype) {

  1841             case 4: jvmType = "[Z"; break;

  1842             case 5: jvmType = "[C"; break;

  1843             case 6: jvmType = "[F"; break;

  1844             case 7: jvmType = "[D"; break;

  1845             case 8: jvmType = "[B"; break;

  1846             case 9: jvmType = "[S"; break;

  1847             case 10: jvmType = "[I"; break;

  1848             case 11: jvmType = "[J"; break;

  1849             default: throw new IllegalStateException("Array type: " + atype);

  1850         }

  1851         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  1852              smapper.popI(), smapper.pushA(), jvmType);

  1853     }

  1855     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  1856         String typeName = jc.getClassName(type);

  1857         if (typeName.startsWith("[")) {

  1858             typeName = "[" + typeName;

  1859         } else {

  1860             typeName = "[L" + typeName + ";";

  1861         }

  1862         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  1863              smapper.popI(), smapper.pushA(), typeName);

  1864     }

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

  1867         String typeName = jc.getClassName(type);

  1868         int dim = readUByte(byteCodes, ++i);

  1869         StringBuilder dims = new StringBuilder();

  1870         dims.append('[');

  1871         for (int d = 0; d < dim; d++) {

  1872             if (d != 0) {

  1873                 dims.insert(1, ",");

  1874             }

  1875             dims.insert(1, smapper.popI());

  1876         }

  1877         dims.append(']');

  1878         emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  1879              dims.toString(), smapper.pushA(), typeName);

  1880         return i;

  1881     }

  1883     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1884         int table = i / 4 * 4 + 4;

  1885         int dflt = i + readInt4(byteCodes, table);

  1886         table += 4;

  1887         int low = readInt4(byteCodes, table);

  1888         table += 4;

  1889         int high = readInt4(byteCodes, table);

  1890         table += 4;

  1891         out.append("switch (").append(smapper.popI()).append(") {\n");

  1892         while (low <= high) {

  1893             int offset = i + readInt4(byteCodes, table);

  1894             table += 4;

  1895             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  1896             low++;

  1897         }

  1898         out.append("  default: ");

  1899         goTo(out, i, dflt, topMostLabel);

  1900         out.append("\n}");

  1901         i = table - 1;

  1902         return i;

  1903     }

  1905     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1906         int table = i / 4 * 4 + 4;

  1907         int dflt = i + readInt4(byteCodes, table);

  1908         table += 4;

  1909         int n = readInt4(byteCodes, table);

  1910         table += 4;

  1911         out.append("switch (").append(smapper.popI()).append(") {\n");

  1912         while (n-- > 0) {

  1913             int cnstnt = readInt4(byteCodes, table);

  1914             table += 4;

  1915             int offset = i + readInt4(byteCodes, table);

  1916             table += 4;

  1917             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  1918         }

  1919         out.append("  default: ");

  1920         goTo(out, i, dflt, topMostLabel);

  1921         out.append("\n}");

  1922         i = table - 1;

  1923         return i;

  1924     }

  1926     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  1927         final String type = jc.getClassName(indx);

  1928         if (!type.startsWith("[")) {

  1929             emit(out, "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  1930                  smapper.popA(), smapper.pushI(),

  1931                  type.replace('/', '_'));

  1932         } else {

  1933             emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  1934                 smapper.popA(), smapper.pushI(),

  1935                 type

  1936             );

  1937         }

  1938     }

  1940     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  1941         final String type = jc.getClassName(indx);

  1942         if (!type.startsWith("[")) {

  1943             emit(out,

  1944                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  1945                  smapper.getA(0), type.replace('/', '_'));

  1946         } else {

  1947             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);",

  1948                  smapper.getA(0), type

  1949             );

  1950         }

  1951     }

  1953     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  1954         for (int j = prev; j <= i; j++) {

  1955             out.append(" ");

  1956             final int cc = readUByte(byteCodes, j);

  1957             out.append(Integer.toString(cc));

  1958         }

  1959     }

  1960 }

author	Lubomir Nerad <lubomir.nerad@oracle.com>
	Mon, 06 May 2013 11:57:29 +0200
branch	closure
changeset 1083	9d6130cb464f
parent 1082	977cc6141083
child 1084	f5c9934a252c
permissions	-rw-r--r--