hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@2af07db15110

     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 String accessField(String object, String mangledName,

    63                                  String[] fieldInfoName) throws IOException {

    64         return object + "." + mangledName;

    65     }

    67     protected String accessStaticMethod(

    68                              String object,

    69                              String mangledName,

    70                              String[] fieldInfoName) throws IOException {

    71         return object + "." + mangledName;

    72     }

    74     protected String accessVirtualMethod(

    75                              String object,

    76                              String mangledName,

    77                              String[] fieldInfoName) throws IOException {

    78         return object + "." + mangledName;

    79     }

    81     protected void declaredClass(ClassData classData, String mangledName)

    82             throws IOException {

    83     }

    85     protected void declaredField(FieldData fieldData,

    86                                  String destObject,

    87                                  String mangledName) throws IOException {

    88     }

    90     protected void declaredMethod(MethodData methodData,

    91                                   String destObject,

    92                                   String mangledName) throws IOException {

    93     }

    95     /** Prints out a debug message.

    96      *

    97      * @param msg the message

    98      * @return true if the message has been printed

    99      * @throws IOException

   100      */

   101     boolean debug(String msg) throws IOException {

   102         out.append(msg);

   103         return true;

   104     }

   106     /**

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

   108      *

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

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

   111      *

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

   113      */

   115     public String compile(InputStream classFile) throws IOException {

   116         return compile(new ClassData(classFile));

   117     }

   119     protected String compile(ClassData classData) throws IOException {

   120         this.jc = classData;

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

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

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

   124             );

   125         }

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

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

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

   129             "resource", "processByteCode"

   130         );

   131         if (arr != null) {

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

   133                 requireScript(arr[0]);

   134             }

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

   136                 return null;

   137             }

   138         }

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

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

   141             "container", "prototype"

   142         );

   143         StringArray toInitilize = new StringArray();

   144         final String className = className(jc);

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

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

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

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

   149         if (proto == null) {

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

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

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

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

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

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

   156         } else {

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

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

   159                 proto[0] = "p";

   160             }

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

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

   163         }

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

   165             if (v.isStatic()) {

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

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

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

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

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

   171             } else {

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

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

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

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

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

   177                    .append("; };");

   178             }

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

   181         }

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

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

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

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

   186                 "name", "value"

   187             );

   188             if (only != null) {

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

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

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

   192                 }

   193                 continue;

   194             }

   195             String destObject;

   196             String mn;

   197             out.append("\n    ");

   198             if (m.isStatic()) {

   199                 destObject = "c";

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

   201             } else {

   202                 if (m.isConstructor()) {

   203                     destObject = "CLS";

   204                     mn = generateInstanceMethod(destObject, m);

   205                 } else {

   206                     destObject = "c";

   207                     mn = generateInstanceMethod(destObject, m);

   208                 }

   209             }

   210             declaredMethod(m, destObject, mn);

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

   212             if (runAnno != null) {

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

   214                 generateAnno(jc, out, runAnno);

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

   216             }

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

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

   219         }

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

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

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

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

   224         }

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

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

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

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

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

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

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

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

   233         if (classAnno != null) {

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

   235             generateAnno(jc, out, classAnno);

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

   237         }

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

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

   240         }

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

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

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

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

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

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

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

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

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

   250                 "name", "value"

   251             );

   252             if (only != null) {

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

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

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

   256                 }

   257                 continue;

   258             }

   259             if (!v.isStatic()) {

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

   261                     append(className).append('_').

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

   263             }

   264         }

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

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

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

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

   270         declaredClass(jc, className);

   272 //        StringBuilder sb = new StringBuilder();

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

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

   275 //        }

   276         return "";

   277     }

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

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

   280         if (jsb != null) {

   281             return jsb;

   282         }

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

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

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

   286         }

   287         generateMethod(destObject, mn, m);

   288         return mn;

   289     }

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

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

   293         if (jsb != null) {

   294             return jsb;

   295         }

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

   297         generateMethod(destObject, mn, m);

   298         return mn;

   299     }

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

   302             throws IOException {

   303         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   304         TrapDataIterator trap = m.getTrapDataIterator();

   305         final LocalsMapper lmapper =

   306                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   313         if (byteCodes == null) {

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

   315                .append(jc.getClassName()).append('.')

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

   317             out.append("};");

   318             return;

   319         }

   321         final StackMapper smapper = new StackMapper();

   323         if (!m.isStatic()) {

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

   325         }

   327         int lastStackFrame = -1;

   328         TrapData[] previousTrap = null;

   329         boolean wide = false;

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

   332         int openBraces = 0;

   333         int topMostLabel = 0;

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

   335             int prev = i;

   336             stackMapIterator.advanceTo(i);

   337             boolean changeInCatch = trap.advanceTo(i);

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

   339                 if (previousTrap != null) {

   340                     generateCatch(previousTrap, i, topMostLabel);

   341                     previousTrap = null;

   342                 }

   343             }

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

   345                 if (i != 0) {

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

   347                 }

   348                 if (openBraces > 64) {

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

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

   351                     }

   352                     openBraces = 1;

   353                     topMostLabel = i;

   354                 }

   356                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   360                 openBraces++;

   361                 changeInCatch = true;

   362             } else {

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

   364             }

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

   366                 out.append("try {");

   367                 previousTrap = trap.current();

   368             }

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

   370             switch (c) {

   371                 case opc_aload_0:

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

   373                     break;

   374                 case opc_iload_0:

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

   376                     break;

   377                 case opc_lload_0:

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

   379                     break;

   380                 case opc_fload_0:

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

   382                     break;

   383                 case opc_dload_0:

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

   385                     break;

   386                 case opc_aload_1:

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

   388                     break;

   389                 case opc_iload_1:

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

   391                     break;

   392                 case opc_lload_1:

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

   394                     break;

   395                 case opc_fload_1:

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

   397                     break;

   398                 case opc_dload_1:

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

   400                     break;

   401                 case opc_aload_2:

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

   403                     break;

   404                 case opc_iload_2:

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

   406                     break;

   407                 case opc_lload_2:

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

   409                     break;

   410                 case opc_fload_2:

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

   412                     break;

   413                 case opc_dload_2:

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

   415                     break;

   416                 case opc_aload_3:

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

   418                     break;

   419                 case opc_iload_3:

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

   421                     break;

   422                 case opc_lload_3:

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

   424                     break;

   425                 case opc_fload_3:

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

   427                     break;

   428                 case opc_dload_3:

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

   430                     break;

   431                 case opc_iload: {

   432                     ++i;

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

   434                                           : readUByte(byteCodes, i);

   435                     wide = false;

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

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

   438                     break;

   439                 }

   440                 case opc_lload: {

   441                     ++i;

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

   443                                           : readUByte(byteCodes, i);

   444                     wide = false;

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

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

   447                     break;

   448                 }

   449                 case opc_fload: {

   450                     ++i;

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

   452                                           : readUByte(byteCodes, i);

   453                     wide = false;

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

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

   456                     break;

   457                 }

   458                 case opc_dload: {

   459                     ++i;

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

   461                                           : readUByte(byteCodes, i);

   462                     wide = false;

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

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

   465                     break;

   466                 }

   467                 case opc_aload: {

   468                     ++i;

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

   470                                           : readUByte(byteCodes, i);

   471                     wide = false;

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

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

   474                     break;

   475                 }

   476                 case opc_istore: {

   477                     ++i;

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

   479                                           : readUByte(byteCodes, i);

   480                     wide = false;

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

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

   483                     break;

   484                 }

   485                 case opc_lstore: {

   486                     ++i;

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

   488                                           : readUByte(byteCodes, i);

   489                     wide = false;

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

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

   492                     break;

   493                 }

   494                 case opc_fstore: {

   495                     ++i;

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

   497                                           : readUByte(byteCodes, i);

   498                     wide = false;

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

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

   501                     break;

   502                 }

   503                 case opc_dstore: {

   504                     ++i;

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

   506                                           : readUByte(byteCodes, i);

   507                     wide = false;

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

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

   510                     break;

   511                 }

   512                 case opc_astore: {

   513                     ++i;

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

   515                                           : readUByte(byteCodes, i);

   516                     wide = false;

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

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

   519                     break;

   520                 }

   521                 case opc_astore_0:

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

   523                     break;

   524                 case opc_istore_0:

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

   526                     break;

   527                 case opc_lstore_0:

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

   529                     break;

   530                 case opc_fstore_0:

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

   532                     break;

   533                 case opc_dstore_0:

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

   535                     break;

   536                 case opc_astore_1:

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

   538                     break;

   539                 case opc_istore_1:

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

   541                     break;

   542                 case opc_lstore_1:

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

   544                     break;

   545                 case opc_fstore_1:

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

   547                     break;

   548                 case opc_dstore_1:

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

   550                     break;

   551                 case opc_astore_2:

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

   553                     break;

   554                 case opc_istore_2:

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

   556                     break;

   557                 case opc_lstore_2:

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

   559                     break;

   560                 case opc_fstore_2:

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

   562                     break;

   563                 case opc_dstore_2:

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

   565                     break;

   566                 case opc_astore_3:

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

   568                     break;

   569                 case opc_istore_3:

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

   571                     break;

   572                 case opc_lstore_3:

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

   574                     break;

   575                 case opc_fstore_3:

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

   577                     break;

   578                 case opc_dstore_3:

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

   580                     break;

   581                 case opc_iadd:

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

   583                     break;

   584                 case opc_ladd:

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

   586                     break;

   587                 case opc_fadd:

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

   589                     break;

   590                 case opc_dadd:

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

   592                     break;

   593                 case opc_isub:

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

   595                     break;

   596                 case opc_lsub:

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

   598                     break;

   599                 case opc_fsub:

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

   601                     break;

   602                 case opc_dsub:

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

   604                     break;

   605                 case opc_imul:

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

   607                     break;

   608                 case opc_lmul:

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

   610                     break;

   611                 case opc_fmul:

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

   613                     break;

   614                 case opc_dmul:

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

   616                     break;

   617                 case opc_idiv:

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

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

   620                     break;

   621                 case opc_ldiv:

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

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

   624                     break;

   625                 case opc_fdiv:

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

   627                     break;

   628                 case opc_ddiv:

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

   630                     break;

   631                 case opc_irem:

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

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

   634                     break;

   635                 case opc_lrem:

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

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

   638                     break;

   639                 case opc_frem:

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

   641                     break;

   642                 case opc_drem:

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

   644                     break;

   645                 case opc_iand:

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

   647                     break;

   648                 case opc_land:

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

   650                     break;

   651                 case opc_ior:

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

   653                     break;

   654                 case opc_lor:

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

   656                     break;

   657                 case opc_ixor:

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

   659                     break;

   660                 case opc_lxor:

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

   662                     break;

   663                 case opc_ineg:

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

   665                     break;

   666                 case opc_lneg:

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

   668                     break;

   669                 case opc_fneg:

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

   671                     break;

   672                 case opc_dneg:

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

   674                     break;

   675                 case opc_ishl:

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

   677                     break;

   678                 case opc_lshl:

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

   680                     break;

   681                 case opc_ishr:

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

   683                     break;

   684                 case opc_lshr:

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

   686                     break;

   687                 case opc_iushr:

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

   689                     break;

   690                 case opc_lushr:

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

   692                     break;

   693                 case opc_iinc: {

   694                     ++i;

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

   696                                              : readUByte(byteCodes, i);

   697                     ++i;

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

   699                                             : byteCodes[i];

   700                     wide = false;

   701                     if (incrBy == 1) {

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

   703                     } else {

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

   705                              lmapper.getI(varIndx),

   706                              Integer.toString(incrBy));

   707                     }

   708                     break;

   709                 }

   710                 case opc_return:

   711                     emit(out, "return;");

   712                     break;

   713                 case opc_ireturn:

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

   715                     break;

   716                 case opc_lreturn:

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

   718                     break;

   719                 case opc_freturn:

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

   721                     break;

   722                 case opc_dreturn:

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

   724                     break;

   725                 case opc_areturn:

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

   727                     break;

   728                 case opc_i2l:

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

   730                     break;

   731                 case opc_i2f:

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

   733                     break;

   734                 case opc_i2d:

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

   736                     break;

   737                 case opc_l2i:

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

   739                     break;

   740                     // max int check?

   741                 case opc_l2f:

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

   743                     break;

   744                 case opc_l2d:

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

   746                     break;

   747                 case opc_f2d:

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

   749                     break;

   750                 case opc_d2f:

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

   752                     break;

   753                 case opc_f2i:

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

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

   756                     break;

   757                 case opc_f2l:

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

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

   760                     break;

   761                 case opc_d2i:

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

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

   764                     break;

   765                 case opc_d2l:

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

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

   768                     break;

   769                 case opc_i2b:

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

   771                     break;

   772                 case opc_i2c:

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

   774                     break;

   775                 case opc_i2s:

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

   777                     break;

   778                 case opc_aconst_null:

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

   780                     break;

   781                 case opc_iconst_m1:

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

   783                     break;

   784                 case opc_iconst_0:

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

   786                     break;

   787                 case opc_dconst_0:

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

   789                     break;

   790                 case opc_lconst_0:

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

   792                     break;

   793                 case opc_fconst_0:

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

   795                     break;

   796                 case opc_iconst_1:

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

   798                     break;

   799                 case opc_lconst_1:

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

   801                     break;

   802                 case opc_fconst_1:

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

   804                     break;

   805                 case opc_dconst_1:

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

   807                     break;

   808                 case opc_iconst_2:

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

   810                     break;

   811                 case opc_fconst_2:

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

   813                     break;

   814                 case opc_iconst_3:

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

   816                     break;

   817                 case opc_iconst_4:

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

   819                     break;

   820                 case opc_iconst_5:

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

   822                     break;

   823                 case opc_ldc: {

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

   825                     String v = encodeConstant(indx);

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

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

   828                     break;

   829                 }

   830                 case opc_ldc_w:

   831                 case opc_ldc2_w: {

   832                     int indx = readUShortArg(byteCodes, i);

   833                     i += 2;

   834                     String v = encodeConstant(indx);

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

   836                     if (type == VarType.LONG) {

   837                         final Long lv = new Long(v);

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

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

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

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

   842                     } else {

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

   844                     }

   845                     break;

   846                 }

   847                 case opc_lcmp:

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

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

   850                     break;

   851                 case opc_fcmpl:

   852                 case opc_fcmpg:

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

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

   855                     break;

   856                 case opc_dcmpl:

   857                 case opc_dcmpg:

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

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

   860                     break;

   861                 case opc_if_acmpeq:

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

   863                                    "===", topMostLabel);

   864                     break;

   865                 case opc_if_acmpne:

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

   867                                    "!==", topMostLabel);

   868                     break;

   869                 case opc_if_icmpeq:

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

   871                                    "==", topMostLabel);

   872                     break;

   873                 case opc_ifeq: {

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

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

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

   877                     i += 2;

   878                     break;

   879                 }

   880                 case opc_ifne: {

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

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

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

   884                     i += 2;

   885                     break;

   886                 }

   887                 case opc_iflt: {

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

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

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

   891                     i += 2;

   892                     break;

   893                 }

   894                 case opc_ifle: {

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

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

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

   898                     i += 2;

   899                     break;

   900                 }

   901                 case opc_ifgt: {

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

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

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

   905                     i += 2;

   906                     break;

   907                 }

   908                 case opc_ifge: {

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

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

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

   912                     i += 2;

   913                     break;

   914                 }

   915                 case opc_ifnonnull: {

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

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

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

   919                     i += 2;

   920                     break;

   921                 }

   922                 case opc_ifnull: {

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

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

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

   926                     i += 2;

   927                     break;

   928                 }

   929                 case opc_if_icmpne:

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

   931                                    "!=", topMostLabel);

   932                     break;

   933                 case opc_if_icmplt:

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

   935                                    "<", topMostLabel);

   936                     break;

   937                 case opc_if_icmple:

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

   939                                    "<=", topMostLabel);

   940                     break;

   941                 case opc_if_icmpgt:

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

   943                                    ">", topMostLabel);

   944                     break;

   945                 case opc_if_icmpge:

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

   947                                    ">=", topMostLabel);

   948                     break;

   949                 case opc_goto: {

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

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

   952                     i += 2;

   953                     break;

   954                 }

   955                 case opc_lookupswitch: {

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

   957                     break;

   958                 }

   959                 case opc_tableswitch: {

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

   961                     break;

   962                 }

   963                 case opc_invokeinterface: {

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

   965                     break;

   966                 }

   967                 case opc_invokevirtual:

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

   969                     break;

   970                 case opc_invokespecial:

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

   972                     break;

   973                 case opc_invokestatic:

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

   975                     break;

   976                 case opc_new: {

   977                     int indx = readUShortArg(byteCodes, i);

   978                     String ci = jc.getClassName(indx);

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

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

   981                     addReference(ci);

   982                     i += 2;

   983                     break;

   984                 }

   985                 case opc_newarray:

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

   987                     generateNewArray(atype, smapper);

   988                     break;

   989                 case opc_anewarray: {

   990                     int type = readUShortArg(byteCodes, i);

   991                     i += 2;

   992                     generateANewArray(type, smapper);

   993                     break;

   994                 }

   995                 case opc_multianewarray: {

   996                     int type = readUShortArg(byteCodes, i);

   997                     i += 2;

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

   999                     break;

  1000                 }

  1001                 case opc_arraylength:

  1002                     emit(out, "var @2 = @1.length;",

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

  1004                     break;

  1005                 case opc_lastore:

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

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

  1008                     break;

  1009                 case opc_fastore:

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

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

  1012                     break;

  1013                 case opc_dastore:

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

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

  1016                     break;

  1017                 case opc_aastore:

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

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

  1020                     break;

  1021                 case opc_iastore:

  1022                 case opc_bastore:

  1023                 case opc_castore:

  1024                 case opc_sastore:

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

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

  1027                     break;

  1028                 case opc_laload:

  1029                     emit(out, "var @3 = Array.at(@2, @1);",

  1030                          smapper.popI(), smapper.popA(), smapper.pushL());

  1031                     break;

  1032                 case opc_faload:

  1033                     emit(out, "var @3 = Array.at(@2, @1);",

  1034                          smapper.popI(), smapper.popA(), smapper.pushF());

  1035                     break;

  1036                 case opc_daload:

  1037                     emit(out, "var @3 = Array.at(@2, @1);",

  1038                          smapper.popI(), smapper.popA(), smapper.pushD());

  1039                     break;

  1040                 case opc_aaload:

  1041                     emit(out, "var @3 = Array.at(@2, @1);",

  1042                          smapper.popI(), smapper.popA(), smapper.pushA());

  1043                     break;

  1044                 case opc_iaload:

  1045                 case opc_baload:

  1046                 case opc_caload:

  1047                 case opc_saload:

  1048                     emit(out, "var @3 = Array.at(@2, @1);",

  1049                          smapper.popI(), smapper.popA(), smapper.pushI());

  1050                     break;

  1051                 case opc_pop:

  1052                 case opc_pop2:

  1053                     smapper.pop(1);

  1054                     debug("/* pop */");

  1055                     break;

  1056                 case opc_dup: {

  1057                     final Variable v = smapper.get(0);

  1058                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1059                     break;

  1060                 }

  1061                 case opc_dup2: {

  1062                     final Variable vi1 = smapper.get(0);

  1064                     if (vi1.isCategory2()) {

  1065                         emit(out, "var @1 = @2;",

  1066                              smapper.pushT(vi1.getType()), vi1);

  1067                     } else {

  1068                         final Variable vi2 = smapper.get(1);

  1069                         emit(out, "var @1 = @2, @3 = @4;",

  1070                              smapper.pushT(vi2.getType()), vi2,

  1071                              smapper.pushT(vi1.getType()), vi1);

  1072                     }

  1073                     break;

  1074                 }

  1075                 case opc_dup_x1: {

  1076                     final Variable vi1 = smapper.pop();

  1077                     final Variable vi2 = smapper.pop();

  1078                     final Variable vo3 = smapper.pushT(vi1.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, vo1);

  1084                     break;

  1085                 }

  1086                 case opc_dup2_x1: {

  1087                     final Variable vi1 = smapper.pop();

  1088                     final Variable vi2 = smapper.pop();

  1090                     if (vi1.isCategory2()) {

  1091                         final Variable vo3 = smapper.pushT(vi1.getType());

  1092                         final Variable vo2 = smapper.pushT(vi2.getType());

  1093                         final Variable vo1 = smapper.pushT(vi1.getType());

  1095                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1096                              vo1, vi1, vo2, vi2, vo3, vo1);

  1097                     } else {

  1098                         final Variable vi3 = smapper.pop();

  1099                         final Variable vo5 = smapper.pushT(vi2.getType());

  1100                         final Variable vo4 = smapper.pushT(vi1.getType());

  1101                         final Variable vo3 = smapper.pushT(vi3.getType());

  1102                         final Variable vo2 = smapper.pushT(vi2.getType());

  1103                         final Variable vo1 = smapper.pushT(vi1.getType());

  1105                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1106                              vo1, vi1, vo2, vi2, vo3, vi3);

  1107                         emit(out, " @1 = @2, @3 = @4;",

  1108                              vo4, vo1, vo5, vo2);

  1109                     }

  1110                     break;

  1111                 }

  1112                 case opc_dup_x2: {

  1113                     final Variable vi1 = smapper.pop();

  1114                     final Variable vi2 = smapper.pop();

  1116                     if (vi2.isCategory2()) {

  1117                         final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1123                     } else {

  1124                         final Variable vi3 = smapper.pop();

  1125                         final Variable vo4 = smapper.pushT(vi1.getType());

  1126                         final Variable vo3 = smapper.pushT(vi3.getType());

  1127                         final Variable vo2 = smapper.pushT(vi2.getType());

  1128                         final Variable vo1 = smapper.pushT(vi1.getType());

  1130                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1131                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1132                     }

  1133                     break;

  1134                 }

  1135                 case opc_dup2_x2: {

  1136                     final Variable vi1 = smapper.pop();

  1137                     final Variable vi2 = smapper.pop();

  1139                     if (vi1.isCategory2()) {

  1140                         if (vi2.isCategory2()) {

  1141                             final Variable vo3 = smapper.pushT(vi1.getType());

  1142                             final Variable vo2 = smapper.pushT(vi2.getType());

  1143                             final Variable vo1 = smapper.pushT(vi1.getType());

  1145                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1146                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1147                         } else {

  1148                             final Variable vi3 = smapper.pop();

  1149                             final Variable vo4 = smapper.pushT(vi1.getType());

  1150                             final Variable vo3 = smapper.pushT(vi3.getType());

  1151                             final Variable vo2 = smapper.pushT(vi2.getType());

  1152                             final Variable vo1 = smapper.pushT(vi1.getType());

  1154                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1155                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1156                         }

  1157                     } else {

  1158                         final Variable vi3 = smapper.pop();

  1160                         if (vi3.isCategory2()) {

  1161                             final Variable vo5 = smapper.pushT(vi2.getType());

  1162                             final Variable vo4 = smapper.pushT(vi1.getType());

  1163                             final Variable vo3 = smapper.pushT(vi3.getType());

  1164                             final Variable vo2 = smapper.pushT(vi2.getType());

  1165                             final Variable vo1 = smapper.pushT(vi1.getType());

  1167                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1168                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1169                             emit(out, " @1 = @2, @3 = @4;",

  1170                                  vo4, vo1, vo5, vo2);

  1171                         } else {

  1172                             final Variable vi4 = smapper.pop();

  1173                             final Variable vo6 = smapper.pushT(vi2.getType());

  1174                             final Variable vo5 = smapper.pushT(vi1.getType());

  1175                             final Variable vo4 = smapper.pushT(vi4.getType());

  1176                             final Variable vo3 = smapper.pushT(vi3.getType());

  1177                             final Variable vo2 = smapper.pushT(vi2.getType());

  1178                             final Variable vo1 = smapper.pushT(vi1.getType());

  1180                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1181                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1182                             emit(out, " @1 = @2, @3 = @4;",

  1183                                  vo5, vo1, vo6, vo2);

  1184                         }

  1185                     }

  1186                     break;

  1187                 }

  1188                 case opc_swap: {

  1189                     final Variable vi1 = smapper.get(0);

  1190                     final Variable vi2 = smapper.get(1);

  1192                     if (vi1.getType() == vi2.getType()) {

  1193                         final Variable tmp = smapper.pushT(vi1.getType());

  1195                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1196                              tmp, vi1, vi2);

  1197                         smapper.pop(1);

  1198                     } else {

  1199                         smapper.pop(2);

  1200                         smapper.pushT(vi1.getType());

  1201                         smapper.pushT(vi2.getType());

  1202                     }

  1203                     break;

  1204                 }

  1205                 case opc_bipush:

  1206                     emit(out, "var @1 = @2;",

  1207                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1208                     break;

  1209                 case opc_sipush:

  1210                     emit(out, "var @1 = @2;",

  1211                          smapper.pushI(),

  1212                          Integer.toString(readShortArg(byteCodes, i)));

  1213                     i += 2;

  1214                     break;

  1215                 case opc_getfield: {

  1216                     int indx = readUShortArg(byteCodes, i);

  1217                     String[] fi = jc.getFieldInfoName(indx);

  1218                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1219                     final String mangleClass = mangleSig(fi[0]);

  1220                     final String mangleClassAccess = accessClass(mangleClass);

  1221                     emit(out, "var @2 = @3.call(@1);",

  1222                          smapper.popA(),

  1223                          smapper.pushT(type),

  1224                          accessField(mangleClassAccess + "(false)",

  1225                                      "_" + fi[1], fi));

  1226                     i += 2;

  1227                     break;

  1228                 }

  1229                 case opc_putfield: {

  1230                     int indx = readUShortArg(byteCodes, i);

  1231                     String[] fi = jc.getFieldInfoName(indx);

  1232                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1233                     final String mangleClass = mangleSig(fi[0]);

  1234                     final String mangleClassAccess = accessClass(mangleClass);

  1235                     emit(out, "@3.call(@2, @1);",

  1236                          smapper.popT(type),

  1237                          smapper.popA(),

  1238                          accessField(mangleClassAccess + "(false)",

  1239                                      "_" + fi[1], fi));

  1240                     i += 2;

  1241                     break;

  1242                 }

  1243                 case opc_getstatic: {

  1244                     int indx = readUShortArg(byteCodes, i);

  1245                     String[] fi = jc.getFieldInfoName(indx);

  1246                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1247                     emit(out, "var @1 = @2();",

  1248                          smapper.pushT(type),

  1249                          accessField(accessClass(fi[0].replace('/', '_'))

  1250                                          + "(false)",

  1251                                      "_" + fi[1], fi));

  1252                     i += 2;

  1253                     addReference(fi[0]);

  1254                     break;

  1255                 }

  1256                 case opc_putstatic: {

  1257                     int indx = readUShortArg(byteCodes, i);

  1258                     String[] fi = jc.getFieldInfoName(indx);

  1259                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1260                     emit(out, "@1(@2);",

  1261                          accessField(accessClass(fi[0].replace('/', '_'))

  1262                                          + "(false)",

  1263                                      "_" + fi[1], fi),

  1264                          smapper.popT(type));

  1265                     i += 2;

  1266                     addReference(fi[0]);

  1267                     break;

  1268                 }

  1269                 case opc_checkcast: {

  1270                     int indx = readUShortArg(byteCodes, i);

  1271                     generateCheckcast(indx, smapper);

  1272                     i += 2;

  1273                     break;

  1274                 }

  1275                 case opc_instanceof: {

  1276                     int indx = readUShortArg(byteCodes, i);

  1277                     generateInstanceOf(indx, smapper);

  1278                     i += 2;

  1279                     break;

  1280                 }

  1281                 case opc_athrow: {

  1282                     final Variable v = smapper.popA();

  1283                     smapper.clear();

  1285                     emit(out, "{ var @1 = @2; throw @2; }",

  1286                          smapper.pushA(), v);

  1287                     break;

  1288                 }

  1290                 case opc_monitorenter: {

  1291                     out.append("/* monitor enter */");

  1292                     smapper.popA();

  1293                     break;

  1294                 }

  1296                 case opc_monitorexit: {

  1297                     out.append("/* monitor exit */");

  1298                     smapper.popA();

  1299                     break;

  1300                 }

  1302                 case opc_wide:

  1303                     wide = true;

  1304                     break;

  1306                 default: {

  1307                     wide = false;

  1308                     emit(out, "throw 'unknown bytecode @1';",

  1309                          Integer.toString(c));

  1310                 }

  1311             }

  1312             if (debug(" //")) {

  1313                 generateByteCodeComment(prev, i, byteCodes);

  1314             }

  1315             out.append("\n");

  1316         }

  1317         if (previousTrap != null) {

  1318             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1319         }

  1320         out.append("\n    }\n");

  1321         while (openBraces-- > 0) {

  1322             out.append('}');

  1323         }

  1324         out.append("\n};");

  1325     }

  1327     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1328         int indx = i + readShortArg(byteCodes, i);

  1329         out.append("if (").append(v1)

  1330            .append(' ').append(test).append(' ')

  1331            .append(v2).append(") ");

  1332         goTo(out, i, indx, topMostLabel);

  1333         return i + 2;

  1334     }

  1336     private int readInt4(byte[] byteCodes, int offset) {

  1337         final int d = byteCodes[offset + 0] << 24;

  1338         final int c = byteCodes[offset + 1] << 16;

  1339         final int b = byteCodes[offset + 2] << 8;

  1340         final int a = byteCodes[offset + 3];

  1341         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1342     }

  1343     private static int readUByte(byte[] byteCodes, int offset) {

  1344         return byteCodes[offset] & 0xff;

  1345     }

  1347     private static int readUShort(byte[] byteCodes, int offset) {

  1348         return ((byteCodes[offset] & 0xff) << 8)

  1349                     | (byteCodes[offset + 1] & 0xff);

  1350     }

  1351     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1352         return readUShort(byteCodes, offsetInstruction + 1);

  1353     }

  1355     private static int readShort(byte[] byteCodes, int offset) {

  1356         int signed = byteCodes[offset];

  1357         byte b0 = (byte)signed;

  1358         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1359     }

  1360     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1361         return readShort(byteCodes, offsetInstruction + 1);

  1362     }

  1364     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1365         int i = 0;

  1366         Boolean count = null;

  1367         boolean array = false;

  1368         sig.append("__");

  1369         int firstPos = sig.length();

  1370         while (i < descriptor.length()) {

  1371             char ch = descriptor.charAt(i++);

  1372             switch (ch) {

  1373                 case '(':

  1374                     count = true;

  1375                     continue;

  1376                 case ')':

  1377                     count = false;

  1378                     continue;

  1379                 case 'B':

  1380                 case 'C':

  1381                 case 'D':

  1382                 case 'F':

  1383                 case 'I':

  1384                 case 'J':

  1385                 case 'S':

  1386                 case 'Z':

  1387                     if (count) {

  1388                         if (array) {

  1389                             sig.append("_3");

  1390                         }

  1391                         sig.append(ch);

  1392                         if (ch == 'J' || ch == 'D') {

  1393                             cnt.append('1');

  1394                         } else {

  1395                             cnt.append('0');

  1396                         }

  1397                     } else {

  1398                         sig.insert(firstPos, ch);

  1399                         if (array) {

  1400                             returnType[0] = '[';

  1401                             sig.insert(firstPos, "_3");

  1402                         } else {

  1403                             returnType[0] = ch;

  1404                         }

  1405                     }

  1406                     array = false;

  1407                     continue;

  1408                 case 'V':

  1409                     assert !count;

  1410                     returnType[0] = 'V';

  1411                     sig.insert(firstPos, 'V');

  1412                     continue;

  1413                 case 'L':

  1414                     int next = descriptor.indexOf(';', i);

  1415                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1416                     if (count) {

  1417                         if (array) {

  1418                             sig.append("_3");

  1419                         }

  1420                         sig.append(realSig);

  1421                         cnt.append('0');

  1422                     } else {

  1423                         sig.insert(firstPos, realSig);

  1424                         if (array) {

  1425                             sig.insert(firstPos, "_3");

  1426                         }

  1427                         returnType[0] = 'L';

  1428                     }

  1429                     i = next + 1;

  1430                     array = false;

  1431                     continue;

  1432                 case '[':

  1433                     array = true;

  1434                     continue;

  1435                 default:

  1436                     throw new IllegalStateException("Invalid char: " + ch);

  1437             }

  1438         }

  1439     }

  1441     static String mangleSig(String sig) {

  1442         return mangleSig(sig, 0, sig.length());

  1443     }

  1445     private static String mangleSig(String txt, int first, int last) {

  1446         StringBuilder sb = new StringBuilder();

  1447         for (int i = first; i < last; i++) {

  1448             final char ch = txt.charAt(i);

  1449             switch (ch) {

  1450                 case '/': sb.append('_'); break;

  1451                 case '_': sb.append("_1"); break;

  1452                 case ';': sb.append("_2"); break;

  1453                 case '[': sb.append("_3"); break;

  1454                 default: sb.append(ch); break;

  1455             }

  1456         }

  1457         return sb.toString();

  1458     }

  1460     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1461         StringBuilder name = new StringBuilder();

  1462         if ("<init>".equals(m.getName())) { // NOI18N

  1463             name.append("cons"); // NOI18N

  1464         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1465             name.append("class"); // NOI18N

  1466         } else {

  1467             name.append(m.getName());

  1468         }

  1470         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1471         return name.toString();

  1472     }

  1474     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1475         StringBuilder name = new StringBuilder();

  1476         String descr = mi[2];//mi.getDescriptor();

  1477         String nm= mi[1];

  1478         if ("<init>".equals(nm)) { // NOI18N

  1479             name.append("cons"); // NOI18N

  1480         } else {

  1481             name.append(nm);

  1482         }

  1483         countArgs(descr, returnType, name, cnt);

  1484         return name.toString();

  1485     }

  1487     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1488     throws IOException {

  1489         int methodIndex = readUShortArg(byteCodes, i);

  1490         String[] mi = jc.getFieldInfoName(methodIndex);

  1491         char[] returnType = { 'V' };

  1492         StringBuilder cnt = new StringBuilder();

  1493         String mn = findMethodName(mi, cnt, returnType);

  1495         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1496         final Variable[] vars = new Variable[numArguments];

  1498         for (int j = numArguments - 1; j >= 0; --j) {

  1499             vars[j] = mapper.pop();

  1500         }

  1502         if (returnType[0] != 'V') {

  1503             out.append("var ")

  1504                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1505                .append(" = ");

  1506         }

  1508         final String in = mi[0];

  1509         String object = accessClass(in.replace('/', '_')) + "(false)";

  1510         if (mn.startsWith("cons_")) {

  1511             object += ".constructor";

  1512         }

  1513         out.append(accessStaticMethod(object, mn, mi));

  1514         if (isStatic) {

  1515             out.append('(');

  1516         } else {

  1517             out.append(".call(");

  1518         }

  1519         if (numArguments > 0) {

  1520             out.append(vars[0]);

  1521             for (int j = 1; j < numArguments; ++j) {

  1522                 out.append(", ");

  1523                 out.append(vars[j]);

  1524             }

  1525         }

  1526         out.append(");");

  1527         i += 2;

  1528         addReference(in);

  1529         return i;

  1530     }

  1531     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1532     throws IOException {

  1533         int methodIndex = readUShortArg(byteCodes, i);

  1534         String[] mi = jc.getFieldInfoName(methodIndex);

  1535         char[] returnType = { 'V' };

  1536         StringBuilder cnt = new StringBuilder();

  1537         String mn = findMethodName(mi, cnt, returnType);

  1539         final int numArguments = cnt.length() + 1;

  1540         final Variable[] vars = new Variable[numArguments];

  1542         for (int j = numArguments - 1; j >= 0; --j) {

  1543             vars[j] = mapper.pop();

  1544         }

  1546         if (returnType[0] != 'V') {

  1547             out.append("var ")

  1548                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1549                .append(" = ");

  1550         }

  1552         out.append(accessVirtualMethod(vars[0].toString(), mn, mi));

  1553         out.append('(');

  1554         String sep = "";

  1555         for (int j = 1; j < numArguments; ++j) {

  1556             out.append(sep);

  1557             out.append(vars[j]);

  1558             sep = ", ";

  1559         }

  1560         out.append(");");

  1561         i += 2;

  1562         return i;

  1563     }

  1565     private void addReference(String cn) throws IOException {

  1566         if (requireReference(cn)) {

  1567             debug(" /* needs " + cn + " */");

  1568         }

  1569     }

  1571     private void outType(String d, StringBuilder out) {

  1572         int arr = 0;

  1573         while (d.charAt(0) == '[') {

  1574             out.append('A');

  1575             d = d.substring(1);

  1576         }

  1577         if (d.charAt(0) == 'L') {

  1578             assert d.charAt(d.length() - 1) == ';';

  1579             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1580         } else {

  1581             out.append(d);

  1582         }

  1583     }

  1585     private String encodeConstant(int entryIndex) throws IOException {

  1586         String[] classRef = { null };

  1587         String s = jc.stringValue(entryIndex, classRef);

  1588         if (classRef[0] != null) {

  1589             if (classRef[0].startsWith("[")) {

  1590                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "');";

  1591             } else {

  1592                 addReference(classRef[0]);

  1593                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1594             }

  1595         }

  1596         return s;

  1597     }

  1599     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1600         byte[] arr = m.findAnnotationData(true);

  1601         if (arr == null) {

  1602             return null;

  1603         }

  1604         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1605         class P extends AnnotationParser {

  1606             public P() {

  1607                 super(false, true);

  1608             }

  1610             int cnt;

  1611             String[] args = new String[30];

  1612             String body;

  1614             @Override

  1615             protected void visitAttr(String type, String attr, String at, String value) {

  1616                 if (type.equals(jvmType)) {

  1617                     if ("body".equals(attr)) {

  1618                         body = value;

  1619                     } else if ("args".equals(attr)) {

  1620                         args[cnt++] = value;

  1621                     } else {

  1622                         throw new IllegalArgumentException(attr);

  1623                     }

  1624                 }

  1625             }

  1626         }

  1627         P p = new P();

  1628         p.parse(arr, jc);

  1629         if (p.body == null) {

  1630             return null;

  1631         }

  1632         StringBuilder cnt = new StringBuilder();

  1633         final String mn = findMethodName(m, cnt);

  1634         out.append(destObject).append(".").append(mn);

  1635         out.append(" = function(");

  1636         String space = "";

  1637         int index = 0;

  1638         for (int i = 0; i < cnt.length(); i++) {

  1639             out.append(space);

  1640             space = outputArg(out, p.args, index);

  1641             index++;

  1642         }

  1643         out.append(") {").append("\n");

  1644         out.append(p.body);

  1645         out.append("\n}\n");

  1646         return mn;

  1647     }

  1648     private static String className(ClassData jc) {

  1649         //return jc.getName().getInternalName().replace('/', '_');

  1650         return jc.getClassName().replace('/', '_');

  1651     }

  1653     private static String[] findAnnotation(

  1654         byte[] arr, ClassData cd, final String className,

  1655         final String... attrNames

  1656     ) throws IOException {

  1657         if (arr == null) {

  1658             return null;

  1659         }

  1660         final String[] values = new String[attrNames.length];

  1661         final boolean[] found = { false };

  1662         final String jvmType = "L" + className.replace('.', '/') + ";";

  1663         AnnotationParser ap = new AnnotationParser(false, true) {

  1664             @Override

  1665             protected void visitAttr(String type, String attr, String at, String value) {

  1666                 if (type.equals(jvmType)) {

  1667                     found[0] = true;

  1668                     for (int i = 0; i < attrNames.length; i++) {

  1669                         if (attrNames[i].equals(attr)) {

  1670                             values[i] = value;

  1671                         }

  1672                     }

  1673                 }

  1674             }

  1676         };

  1677         ap.parse(arr, cd);

  1678         return found[0] ? values : null;

  1679     }

  1681     private CharSequence initField(FieldData v) {

  1682         final String is = v.getInternalSig();

  1683         if (is.length() == 1) {

  1684             switch (is.charAt(0)) {

  1685                 case 'S':

  1686                 case 'J':

  1687                 case 'B':

  1688                 case 'Z':

  1689                 case 'C':

  1690                 case 'I': return " = 0;";

  1691                 case 'F':

  1692                 case 'D': return " = 0.0;";

  1693                 default:

  1694                     throw new IllegalStateException(is);

  1695             }

  1696         }

  1697         return " = null;";

  1698     }

  1700     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1701         AnnotationParser ap = new AnnotationParser(true, false) {

  1702             int[] cnt = new int[32];

  1703             int depth;

  1705             @Override

  1706             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1707                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1708                 requireReference(slashType);

  1710                 if (cnt[depth]++ > 0) {

  1711                     out.append(",");

  1712                 }

  1713                 if (top) {

  1714                     out.append('"').append(attrType).append("\" : ");

  1715                 }

  1716                 out.append("{\n");

  1717                 cnt[++depth] = 0;

  1718             }

  1720             @Override

  1721             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1722                 out.append("\n}\n");

  1723                 depth--;

  1724             }

  1726             @Override

  1727             protected void visitValueStart(String attrName, char type) throws IOException {

  1728                 if (cnt[depth]++ > 0) {

  1729                     out.append(",\n");

  1730                 }

  1731                 cnt[++depth] = 0;

  1732                 if (attrName != null) {

  1733                     out.append(attrName).append(" : ");

  1734                 }

  1735                 if (type == '[') {

  1736                     out.append("[");

  1737                 }

  1738             }

  1740             @Override

  1741             protected void visitValueEnd(String attrName, char type) throws IOException {

  1742                 if (type == '[') {

  1743                     out.append("]");

  1744                 }

  1745                 depth--;

  1746             }

  1748             @Override

  1749             protected void visitAttr(String type, String attr, String attrType, String value)

  1750             throws IOException {

  1751                 if (attr == null && value == null) {

  1752                     return;

  1753                 }

  1754                 out.append(value);

  1755             }

  1757             @Override

  1758             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1759             throws IOException {

  1760                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1761                 requireReference(slashType);

  1763                 out.append(accessClass(slashType.replace('/', '_')))

  1764                    .append("(false).constructor.").append(value);

  1765             }

  1766         };

  1767         ap.parse(data, cd);

  1768     }

  1770     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1771         final String name = args[indx];

  1772         if (name == null) {

  1773             return "";

  1774         }

  1775         if (name.contains(",")) {

  1776             throw new IOException("Wrong parameter with ',': " + name);

  1777         }

  1778         out.append(name);

  1779         return ",";

  1780     }

  1782     private static void emit(final Appendable out,

  1783                              final String format,

  1784                              final CharSequence... params) throws IOException {

  1785         final int length = format.length();

  1787         int processed = 0;

  1788         int paramOffset = format.indexOf('@');

  1789         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1790             final char paramChar = format.charAt(paramOffset + 1);

  1791             if ((paramChar >= '1') && (paramChar <= '9')) {

  1792                 final int paramIndex = paramChar - '0' - 1;

  1794                 out.append(format, processed, paramOffset);

  1795                 out.append(params[paramIndex]);

  1797                 ++paramOffset;

  1798                 processed = paramOffset + 1;

  1799             }

  1801             paramOffset = format.indexOf('@', paramOffset + 1);

  1802         }

  1804         out.append(format, processed, length);

  1805     }

  1807     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1808         out.append("} catch (e) {\n");

  1809         int finallyPC = -1;

  1810         for (TrapData e : traps) {

  1811             if (e == null) {

  1812                 break;

  1813             }

  1814             if (e.catch_cpx != 0) { //not finally

  1815                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1816                 addReference(classInternalName);

  1817                 out.append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  1818                 out.append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  1819                 out.append("var stA0 = e;");

  1820                 goTo(out, current, e.handler_pc, topMostLabel);

  1821                 out.append("}\n");

  1822             } else {

  1823                 finallyPC = e.handler_pc;

  1824             }

  1825         }

  1826         if (finallyPC == -1) {

  1827             out.append("throw e;");

  1828         } else {

  1829             out.append("var stA0 = e;");

  1830             goTo(out, current, finallyPC, topMostLabel);

  1831         }

  1832         out.append("\n}");

  1833     }

  1835     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1836         if (to < current) {

  1837             if (canBack < to) {

  1838                 out.append("{ gt = 0; continue X_" + to + "; }");

  1839             } else {

  1840                 out.append("{ gt = " + to + "; continue X_0; }");

  1841             }

  1842         } else {

  1843             out.append("{ gt = " + to + "; break IF; }");

  1844         }

  1845     }

  1847     private static void emitIf(

  1848         Appendable out, String pattern, Variable param,

  1849         int current, int to, int canBack

  1850     ) throws IOException {

  1851         emit(out, pattern, param);

  1852         goTo(out, current, to, canBack);

  1853     }

  1855     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1856         String jvmType;

  1857         switch (atype) {

  1858             case 4: jvmType = "[Z"; break;

  1859             case 5: jvmType = "[C"; break;

  1860             case 6: jvmType = "[F"; break;

  1861             case 7: jvmType = "[D"; break;

  1862             case 8: jvmType = "[B"; break;

  1863             case 9: jvmType = "[S"; break;

  1864             case 10: jvmType = "[I"; break;

  1865             case 11: jvmType = "[J"; break;

  1866             default: throw new IllegalStateException("Array type: " + atype);

  1867         }

  1868         emit(out, "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2I'](true, '@3', @1);",

  1869              smapper.popI(), smapper.pushA(), jvmType);

  1870     }

  1872     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  1873         String typeName = jc.getClassName(type);

  1874         if (typeName.startsWith("[")) {

  1875             typeName = "[" + typeName;

  1876         } else {

  1877             typeName = "[L" + typeName + ";";

  1878         }

  1879         emit(out, "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2I'](false, '@3', @1);",

  1880              smapper.popI(), smapper.pushA(), typeName);

  1881     }

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

  1884         String typeName = jc.getClassName(type);

  1885         int dim = readUByte(byteCodes, ++i);

  1886         StringBuilder dims = new StringBuilder();

  1887         dims.append('[');

  1888         for (int d = 0; d < dim; d++) {

  1889             if (d != 0) {

  1890                 dims.insert(1, ",");

  1891             }

  1892             dims.insert(1, smapper.popI());

  1893         }

  1894         dims.append(']');

  1895         emit(out, "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II']('@3', @1, 0);",

  1896              dims.toString(), smapper.pushA(), typeName);

  1897         return i;

  1898     }

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

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

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

  1903         table += 4;

  1904         int low = readInt4(byteCodes, table);

  1905         table += 4;

  1906         int high = readInt4(byteCodes, table);

  1907         table += 4;

  1908         out.append("switch (").append(smapper.popI()).append(") {\n");

  1909         while (low <= high) {

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

  1911             table += 4;

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

  1913             low++;

  1914         }

  1915         out.append("  default: ");

  1916         goTo(out, i, dflt, topMostLabel);

  1917         out.append("\n}");

  1918         i = table - 1;

  1919         return i;

  1920     }

  1922     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1923         int table = i / 4 * 4 + 4;

  1924         int dflt = i + readInt4(byteCodes, table);

  1925         table += 4;

  1926         int n = readInt4(byteCodes, table);

  1927         table += 4;

  1928         out.append("switch (").append(smapper.popI()).append(") {\n");

  1929         while (n-- > 0) {

  1930             int cnstnt = readInt4(byteCodes, table);

  1931             table += 4;

  1932             int offset = i + readInt4(byteCodes, table);

  1933             table += 4;

  1934             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  1935         }

  1936         out.append("  default: ");

  1937         goTo(out, i, dflt, topMostLabel);

  1938         out.append("\n}");

  1939         i = table - 1;

  1940         return i;

  1941     }

  1943     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  1944         final String type = jc.getClassName(indx);

  1945         if (!type.startsWith("[")) {

  1946             emit(out, "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  1947                  smapper.popA(), smapper.pushI(),

  1948                  type.replace('/', '_'));

  1949         } else {

  1950             emit(out, "var @2 = vm.java_lang_Class(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('@3')['isInstance__ZLjava_lang_Object_2'](@1);",

  1951                 smapper.popA(), smapper.pushI(),

  1952                 type

  1953             );

  1954         }

  1955     }

  1957     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  1958         final String type = jc.getClassName(indx);

  1959         if (!type.startsWith("[")) {

  1960             emit(out,

  1961                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  1962                  smapper.getA(0), type.replace('/', '_'));

  1963         } else {

  1964             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);",

  1965                  smapper.getA(0), type

  1966             );

  1967         }

  1968     }

  1970     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  1971         for (int j = prev; j <= i; j++) {

  1972             out.append(" ");

  1973             final int cc = readUByte(byteCodes, j);

  1974             out.append(Integer.toString(cc));

  1975         }

  1976     }

  1977 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Thu, 24 Apr 2014 18:05:21 +0200
branch	closure
changeset 1485	2af07db15110
parent 1146	e499b0dddd12
child 1513	ba912ef24b27
permissions	-rw-r--r--