hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@151f4ccd7673

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

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

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

    25  *

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

    27  */

    28 abstract class ByteCodeToJavaScript {

    29     private ClassData jc;

    30     final Appendable out;

    31     final ObfuscationDelegate obfuscationDelegate;

    33     protected ByteCodeToJavaScript(Appendable out) {

    34         this(out, ObfuscationDelegate.NULL);

    35     }

    37     protected ByteCodeToJavaScript(

    38             Appendable out, ObfuscationDelegate obfuscationDelegate) {

    39         this.out = out;

    40         this.obfuscationDelegate = obfuscationDelegate;

    41     }

    43     /* Collects additional required resources.

    44      *

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

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

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

    48      */

    49     protected abstract boolean requireReference(String internalClassName);

    51     /*

    52      * @param resourcePath name of resources to read

    53      */

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

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

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

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

    59      *

    60      * @param className suggested name of the class

    61      */

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

    63         return className + " = ";

    64     }

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

    66         return classOperation;

    67     }

    69     abstract String getVMObject();

    71     /** Prints out a debug message.

    72      *

    73      * @param msg the message

    74      * @return true if the message has been printed

    75      * @throws IOException

    76      */

    77     boolean debug(String msg) throws IOException {

    78         out.append(msg);

    79         return true;

    80     }

    82     /**

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

    84      *

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

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

    87      *

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

    89      */

    91     public String compile(InputStream classFile) throws IOException {

    92         this.jc = new ClassData(classFile);

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

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

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

    96             );

    97         }

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

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

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

   101             "resource", "processByteCode"

   102         );

   103         if (arr != null) {

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

   105                 requireScript(arr[0]);

   106             }

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

   108                 return null;

   109             }

   110         }

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

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

   113             "container", "prototype"

   114         );

   115         StringArray toInitilize = new StringArray();

   116         final String className = className(jc);

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

   118         out.append("function CLS() {");

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

   120         if (proto == null) {

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

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

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

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

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

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

   127         } else {

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

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

   130                 proto[0] = "p";

   131             }

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

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

   134         }

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

   136             if (v.isStatic()) {

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

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

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

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

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

   142             } else {

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

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

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

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

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

   148                    .append("; };");

   149             }

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

   152         }

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

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

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

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

   157                 "name", "value"

   158             );

   159             if (only != null) {

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

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

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

   163                 }

   164                 continue;

   165             }

   166             String destObject;

   167             String mn;

   168             out.append("\n    ");

   169             if (m.isStatic()) {

   170                 destObject = "c";

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

   172             } else {

   173                 if (m.isConstructor()) {

   174                     destObject = "CLS";

   175                     mn = generateInstanceMethod(destObject, m);

   176                 } else {

   177                     destObject = "c";

   178                     mn = generateInstanceMethod(destObject, m);

   179                 }

   180             }

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

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

   183             if (runAnno != null) {

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

   185                 generateAnno(jc, out, runAnno);

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

   187             }

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

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

   190         }

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

   192         String instOfName = "$instOf_" + className;

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

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

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

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

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

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

   199         }

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

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

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

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

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

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

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

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

   208         if (classAnno != null) {

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

   210             generateAnno(jc, out, classAnno);

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

   212         }

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

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

   215         }

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

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

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

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

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

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

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

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

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

   225                 "name", "value"

   226             );

   227             if (only != null) {

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

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

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

   231                 }

   232                 continue;

   233             }

   234             if (!v.isStatic()) {

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

   236                     append(className).append('_').

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

   238             }

   239         }

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

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

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

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

   245         obfuscationDelegate.exportClass(out, getVMObject(), className, jc);

   247 //        StringBuilder sb = new StringBuilder();

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

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

   250 //        }

   251         return "";

   252     }

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

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

   255         if (jsb != null) {

   256             return jsb;

   257         }

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

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

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

   261         }

   262         generateMethod(destObject, mn, m);

   263         return mn;

   264     }

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

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

   268         if (jsb != null) {

   269             return jsb;

   270         }

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

   272         generateMethod(destObject, mn, m);

   273         return mn;

   274     }

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

   277             throws IOException {

   278         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   279         TrapDataIterator trap = m.getTrapDataIterator();

   280         final LocalsMapper lmapper =

   281                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   288         if (byteCodes == null) {

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

   290                .append(jc.getClassName()).append('.')

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

   292             out.append("};");

   293             return;

   294         }

   296         final StackMapper smapper = new StackMapper();

   298         if (!m.isStatic()) {

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

   300         }

   302         int lastStackFrame = -1;

   303         TrapData[] previousTrap = null;

   304         boolean wide = false;

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

   307         int openBraces = 0;

   308         int topMostLabel = 0;

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

   310             int prev = i;

   311             stackMapIterator.advanceTo(i);

   312             boolean changeInCatch = trap.advanceTo(i);

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

   314                 if (previousTrap != null) {

   315                     generateCatch(previousTrap, i, topMostLabel);

   316                     previousTrap = null;

   317                 }

   318             }

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

   320                 if (i != 0) {

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

   322                 }

   323                 if (openBraces > 64) {

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

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

   326                     }

   327                     openBraces = 1;

   328                     topMostLabel = i;

   329                 }

   331                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   335                 openBraces++;

   336                 changeInCatch = true;

   337             } else {

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

   339             }

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

   341                 out.append("try {");

   342                 previousTrap = trap.current();

   343             }

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

   345             switch (c) {

   346                 case opc_aload_0:

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

   348                     break;

   349                 case opc_iload_0:

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

   351                     break;

   352                 case opc_lload_0:

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

   354                     break;

   355                 case opc_fload_0:

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

   357                     break;

   358                 case opc_dload_0:

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

   360                     break;

   361                 case opc_aload_1:

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

   363                     break;

   364                 case opc_iload_1:

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

   366                     break;

   367                 case opc_lload_1:

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

   369                     break;

   370                 case opc_fload_1:

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

   372                     break;

   373                 case opc_dload_1:

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

   375                     break;

   376                 case opc_aload_2:

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

   378                     break;

   379                 case opc_iload_2:

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

   381                     break;

   382                 case opc_lload_2:

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

   384                     break;

   385                 case opc_fload_2:

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

   387                     break;

   388                 case opc_dload_2:

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

   390                     break;

   391                 case opc_aload_3:

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

   393                     break;

   394                 case opc_iload_3:

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

   396                     break;

   397                 case opc_lload_3:

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

   399                     break;

   400                 case opc_fload_3:

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

   402                     break;

   403                 case opc_dload_3:

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

   405                     break;

   406                 case opc_iload: {

   407                     ++i;

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

   409                                           : readUByte(byteCodes, i);

   410                     wide = false;

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

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

   413                     break;

   414                 }

   415                 case opc_lload: {

   416                     ++i;

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

   418                                           : readUByte(byteCodes, i);

   419                     wide = false;

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

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

   422                     break;

   423                 }

   424                 case opc_fload: {

   425                     ++i;

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

   427                                           : readUByte(byteCodes, i);

   428                     wide = false;

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

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

   431                     break;

   432                 }

   433                 case opc_dload: {

   434                     ++i;

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

   436                                           : readUByte(byteCodes, i);

   437                     wide = false;

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

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

   440                     break;

   441                 }

   442                 case opc_aload: {

   443                     ++i;

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

   445                                           : readUByte(byteCodes, i);

   446                     wide = false;

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

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

   449                     break;

   450                 }

   451                 case opc_istore: {

   452                     ++i;

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

   454                                           : readUByte(byteCodes, i);

   455                     wide = false;

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

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

   458                     break;

   459                 }

   460                 case opc_lstore: {

   461                     ++i;

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

   463                                           : readUByte(byteCodes, i);

   464                     wide = false;

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

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

   467                     break;

   468                 }

   469                 case opc_fstore: {

   470                     ++i;

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

   472                                           : readUByte(byteCodes, i);

   473                     wide = false;

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

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

   476                     break;

   477                 }

   478                 case opc_dstore: {

   479                     ++i;

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

   481                                           : readUByte(byteCodes, i);

   482                     wide = false;

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

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

   485                     break;

   486                 }

   487                 case opc_astore: {

   488                     ++i;

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

   490                                           : readUByte(byteCodes, i);

   491                     wide = false;

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

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

   494                     break;

   495                 }

   496                 case opc_astore_0:

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

   498                     break;

   499                 case opc_istore_0:

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

   501                     break;

   502                 case opc_lstore_0:

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

   504                     break;

   505                 case opc_fstore_0:

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

   507                     break;

   508                 case opc_dstore_0:

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

   510                     break;

   511                 case opc_astore_1:

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

   513                     break;

   514                 case opc_istore_1:

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

   516                     break;

   517                 case opc_lstore_1:

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

   519                     break;

   520                 case opc_fstore_1:

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

   522                     break;

   523                 case opc_dstore_1:

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

   525                     break;

   526                 case opc_astore_2:

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

   528                     break;

   529                 case opc_istore_2:

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

   531                     break;

   532                 case opc_lstore_2:

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

   534                     break;

   535                 case opc_fstore_2:

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

   537                     break;

   538                 case opc_dstore_2:

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

   540                     break;

   541                 case opc_astore_3:

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

   543                     break;

   544                 case opc_istore_3:

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

   546                     break;

   547                 case opc_lstore_3:

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

   549                     break;

   550                 case opc_fstore_3:

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

   552                     break;

   553                 case opc_dstore_3:

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

   555                     break;

   556                 case opc_iadd:

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

   558                     break;

   559                 case opc_ladd:

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

   561                     break;

   562                 case opc_fadd:

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

   564                     break;

   565                 case opc_dadd:

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

   567                     break;

   568                 case opc_isub:

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

   570                     break;

   571                 case opc_lsub:

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

   573                     break;

   574                 case opc_fsub:

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

   576                     break;

   577                 case opc_dsub:

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

   579                     break;

   580                 case opc_imul:

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

   582                     break;

   583                 case opc_lmul:

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

   585                     break;

   586                 case opc_fmul:

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

   588                     break;

   589                 case opc_dmul:

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

   591                     break;

   592                 case opc_idiv:

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

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

   595                     break;

   596                 case opc_ldiv:

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

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

   599                     break;

   600                 case opc_fdiv:

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

   602                     break;

   603                 case opc_ddiv:

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

   605                     break;

   606                 case opc_irem:

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

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

   609                     break;

   610                 case opc_lrem:

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

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

   613                     break;

   614                 case opc_frem:

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

   616                     break;

   617                 case opc_drem:

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

   619                     break;

   620                 case opc_iand:

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

   622                     break;

   623                 case opc_land:

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

   625                     break;

   626                 case opc_ior:

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

   628                     break;

   629                 case opc_lor:

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

   631                     break;

   632                 case opc_ixor:

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

   634                     break;

   635                 case opc_lxor:

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

   637                     break;

   638                 case opc_ineg:

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

   640                     break;

   641                 case opc_lneg:

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

   643                     break;

   644                 case opc_fneg:

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

   646                     break;

   647                 case opc_dneg:

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

   649                     break;

   650                 case opc_ishl:

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

   652                     break;

   653                 case opc_lshl:

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

   655                     break;

   656                 case opc_ishr:

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

   658                     break;

   659                 case opc_lshr:

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

   661                     break;

   662                 case opc_iushr:

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

   664                     break;

   665                 case opc_lushr:

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

   667                     break;

   668                 case opc_iinc: {

   669                     ++i;

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

   671                                              : readUByte(byteCodes, i);

   672                     ++i;

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

   674                                             : byteCodes[i];

   675                     wide = false;

   676                     if (incrBy == 1) {

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

   678                     } else {

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

   680                              lmapper.getI(varIndx),

   681                              Integer.toString(incrBy));

   682                     }

   683                     break;

   684                 }

   685                 case opc_return:

   686                     emit(out, "return;");

   687                     break;

   688                 case opc_ireturn:

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

   690                     break;

   691                 case opc_lreturn:

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

   693                     break;

   694                 case opc_freturn:

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

   696                     break;

   697                 case opc_dreturn:

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

   699                     break;

   700                 case opc_areturn:

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

   702                     break;

   703                 case opc_i2l:

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

   705                     break;

   706                 case opc_i2f:

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

   708                     break;

   709                 case opc_i2d:

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

   711                     break;

   712                 case opc_l2i:

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

   714                     break;

   715                     // max int check?

   716                 case opc_l2f:

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

   718                     break;

   719                 case opc_l2d:

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

   721                     break;

   722                 case opc_f2d:

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

   724                     break;

   725                 case opc_d2f:

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

   727                     break;

   728                 case opc_f2i:

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

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

   731                     break;

   732                 case opc_f2l:

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

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

   735                     break;

   736                 case opc_d2i:

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

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

   739                     break;

   740                 case opc_d2l:

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

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

   743                     break;

   744                 case opc_i2b:

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

   746                     break;

   747                 case opc_i2c:

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

   749                     break;

   750                 case opc_i2s:

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

   752                     break;

   753                 case opc_aconst_null:

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

   755                     break;

   756                 case opc_iconst_m1:

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

   758                     break;

   759                 case opc_iconst_0:

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

   761                     break;

   762                 case opc_dconst_0:

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

   764                     break;

   765                 case opc_lconst_0:

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

   767                     break;

   768                 case opc_fconst_0:

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

   770                     break;

   771                 case opc_iconst_1:

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

   773                     break;

   774                 case opc_lconst_1:

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

   776                     break;

   777                 case opc_fconst_1:

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

   779                     break;

   780                 case opc_dconst_1:

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

   782                     break;

   783                 case opc_iconst_2:

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

   785                     break;

   786                 case opc_fconst_2:

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

   788                     break;

   789                 case opc_iconst_3:

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

   791                     break;

   792                 case opc_iconst_4:

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

   794                     break;

   795                 case opc_iconst_5:

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

   797                     break;

   798                 case opc_ldc: {

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

   800                     String v = encodeConstant(indx);

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

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

   803                     break;

   804                 }

   805                 case opc_ldc_w:

   806                 case opc_ldc2_w: {

   807                     int indx = readIntArg(byteCodes, i);

   808                     i += 2;

   809                     String v = encodeConstant(indx);

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

   811                     if (type == VarType.LONG) {

   812                         final Long lv = new Long(v);

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

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

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

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

   817                     } else {

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

   819                     }

   820                     break;

   821                 }

   822                 case opc_lcmp:

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

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

   825                     break;

   826                 case opc_fcmpl:

   827                 case opc_fcmpg:

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

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

   830                     break;

   831                 case opc_dcmpl:

   832                 case opc_dcmpg:

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

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

   835                     break;

   836                 case opc_if_acmpeq:

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

   838                                    "===", topMostLabel);

   839                     break;

   840                 case opc_if_acmpne:

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

   842                                    "!==", topMostLabel);

   843                     break;

   844                 case opc_if_icmpeq:

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

   846                                    "==", topMostLabel);

   847                     break;

   848                 case opc_ifeq: {

   849                     int indx = i + readIntArg(byteCodes, i);

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

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

   852                     i += 2;

   853                     break;

   854                 }

   855                 case opc_ifne: {

   856                     int indx = i + readIntArg(byteCodes, i);

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

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

   859                     i += 2;

   860                     break;

   861                 }

   862                 case opc_iflt: {

   863                     int indx = i + readIntArg(byteCodes, i);

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

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

   866                     i += 2;

   867                     break;

   868                 }

   869                 case opc_ifle: {

   870                     int indx = i + readIntArg(byteCodes, i);

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

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

   873                     i += 2;

   874                     break;

   875                 }

   876                 case opc_ifgt: {

   877                     int indx = i + readIntArg(byteCodes, i);

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

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

   880                     i += 2;

   881                     break;

   882                 }

   883                 case opc_ifge: {

   884                     int indx = i + readIntArg(byteCodes, i);

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

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

   887                     i += 2;

   888                     break;

   889                 }

   890                 case opc_ifnonnull: {

   891                     int indx = i + readIntArg(byteCodes, i);

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

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

   894                     i += 2;

   895                     break;

   896                 }

   897                 case opc_ifnull: {

   898                     int indx = i + readIntArg(byteCodes, i);

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

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

   901                     i += 2;

   902                     break;

   903                 }

   904                 case opc_if_icmpne:

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

   906                                    "!=", topMostLabel);

   907                     break;

   908                 case opc_if_icmplt:

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

   910                                    "<", topMostLabel);

   911                     break;

   912                 case opc_if_icmple:

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

   914                                    "<=", topMostLabel);

   915                     break;

   916                 case opc_if_icmpgt:

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

   918                                    ">", topMostLabel);

   919                     break;

   920                 case opc_if_icmpge:

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

   922                                    ">=", topMostLabel);

   923                     break;

   924                 case opc_goto: {

   925                     int indx = i + readIntArg(byteCodes, i);

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

   927                     i += 2;

   928                     break;

   929                 }

   930                 case opc_lookupswitch: {

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

   932                     break;

   933                 }

   934                 case opc_tableswitch: {

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

   936                     break;

   937                 }

   938                 case opc_invokeinterface: {

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

   940                     break;

   941                 }

   942                 case opc_invokevirtual:

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

   944                     break;

   945                 case opc_invokespecial:

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

   947                     break;

   948                 case opc_invokestatic:

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

   950                     break;

   951                 case opc_new: {

   952                     int indx = readIntArg(byteCodes, i);

   953                     String ci = jc.getClassName(indx);

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

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

   956                     addReference(ci);

   957                     i += 2;

   958                     break;

   959                 }

   960                 case opc_newarray:

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

   962                     generateNewArray(atype, smapper);

   963                     break;

   964                 case opc_anewarray: {

   965                     int type = readIntArg(byteCodes, i);

   966                     i += 2;

   967                     generateANewArray(type, smapper);

   968                     break;

   969                 }

   970                 case opc_multianewarray: {

   971                     int type = readIntArg(byteCodes, i);

   972                     i += 2;

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

   974                     break;

   975                 }

   976                 case opc_arraylength:

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

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

   979                     break;

   980                 case opc_lastore:

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

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

   983                     break;

   984                 case opc_fastore:

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

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

   987                     break;

   988                 case opc_dastore:

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

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

   991                     break;

   992                 case opc_aastore:

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

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

   995                     break;

   996                 case opc_iastore:

   997                 case opc_bastore:

   998                 case opc_castore:

   999                 case opc_sastore:

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

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

  1002                     break;

  1003                 case opc_laload:

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

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

  1006                     break;

  1007                 case opc_faload:

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

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

  1010                     break;

  1011                 case opc_daload:

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

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

  1014                     break;

  1015                 case opc_aaload:

  1016                     emit(out, "var @3 = @2.at(@1);",

  1017                          smapper.popI(), smapper.popA(), smapper.pushA());

  1018                     break;

  1019                 case opc_iaload:

  1020                 case opc_baload:

  1021                 case opc_caload:

  1022                 case opc_saload:

  1023                     emit(out, "var @3 = @2.at(@1);",

  1024                          smapper.popI(), smapper.popA(), smapper.pushI());

  1025                     break;

  1026                 case opc_pop:

  1027                 case opc_pop2:

  1028                     smapper.pop(1);

  1029                     debug("/* pop */");

  1030                     break;

  1031                 case opc_dup: {

  1032                     final Variable v = smapper.get(0);

  1033                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1034                     break;

  1035                 }

  1036                 case opc_dup2: {

  1037                     final Variable vi1 = smapper.get(0);

  1039                     if (vi1.isCategory2()) {

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

  1041                              smapper.pushT(vi1.getType()), vi1);

  1042                     } else {

  1043                         final Variable vi2 = smapper.get(1);

  1044                         emit(out, "var @1 = @2, @3 = @4;",

  1045                              smapper.pushT(vi2.getType()), vi2,

  1046                              smapper.pushT(vi1.getType()), vi1);

  1047                     }

  1048                     break;

  1049                 }

  1050                 case opc_dup_x1: {

  1051                     final Variable vi1 = smapper.pop();

  1052                     final Variable vi2 = smapper.pop();

  1053                     final Variable vo3 = smapper.pushT(vi1.getType());

  1054                     final Variable vo2 = smapper.pushT(vi2.getType());

  1055                     final Variable vo1 = smapper.pushT(vi1.getType());

  1057                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1058                          vo1, vi1, vo2, vi2, vo3, vo1);

  1059                     break;

  1060                 }

  1061                 case opc_dup2_x1: {

  1062                     final Variable vi1 = smapper.pop();

  1063                     final Variable vi2 = smapper.pop();

  1065                     if (vi1.isCategory2()) {

  1066                         final Variable vo3 = smapper.pushT(vi1.getType());

  1067                         final Variable vo2 = smapper.pushT(vi2.getType());

  1068                         final Variable vo1 = smapper.pushT(vi1.getType());

  1070                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1071                              vo1, vi1, vo2, vi2, vo3, vo1);

  1072                     } else {

  1073                         final Variable vi3 = smapper.pop();

  1074                         final Variable vo5 = smapper.pushT(vi2.getType());

  1075                         final Variable vo4 = smapper.pushT(vi1.getType());

  1076                         final Variable vo3 = smapper.pushT(vi3.getType());

  1077                         final Variable vo2 = smapper.pushT(vi2.getType());

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

  1080                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1081                              vo1, vi1, vo2, vi2, vo3, vi3);

  1082                         emit(out, " @1 = @2, @3 = @4;",

  1083                              vo4, vo1, vo5, vo2);

  1084                     }

  1085                     break;

  1086                 }

  1087                 case opc_dup_x2: {

  1088                     final Variable vi1 = smapper.pop();

  1089                     final Variable vi2 = smapper.pop();

  1091                     if (vi2.isCategory2()) {

  1092                         final Variable vo3 = smapper.pushT(vi1.getType());

  1093                         final Variable vo2 = smapper.pushT(vi2.getType());

  1094                         final Variable vo1 = smapper.pushT(vi1.getType());

  1096                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1097                              vo1, vi1, vo2, vi2, vo3, vo1);

  1098                     } else {

  1099                         final Variable vi3 = smapper.pop();

  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, @7 = @8;",

  1106                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1107                     }

  1108                     break;

  1109                 }

  1110                 case opc_dup2_x2: {

  1111                     final Variable vi1 = smapper.pop();

  1112                     final Variable vi2 = smapper.pop();

  1114                     if (vi1.isCategory2()) {

  1115                         if (vi2.isCategory2()) {

  1116                             final Variable vo3 = smapper.pushT(vi1.getType());

  1117                             final Variable vo2 = smapper.pushT(vi2.getType());

  1118                             final Variable vo1 = smapper.pushT(vi1.getType());

  1120                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1121                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1122                         } else {

  1123                             final Variable vi3 = smapper.pop();

  1124                             final Variable vo4 = smapper.pushT(vi1.getType());

  1125                             final Variable vo3 = smapper.pushT(vi3.getType());

  1126                             final Variable vo2 = smapper.pushT(vi2.getType());

  1127                             final Variable vo1 = smapper.pushT(vi1.getType());

  1129                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1130                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1131                         }

  1132                     } else {

  1133                         final Variable vi3 = smapper.pop();

  1135                         if (vi3.isCategory2()) {

  1136                             final Variable vo5 = smapper.pushT(vi2.getType());

  1137                             final Variable vo4 = smapper.pushT(vi1.getType());

  1138                             final Variable vo3 = smapper.pushT(vi3.getType());

  1139                             final Variable vo2 = smapper.pushT(vi2.getType());

  1140                             final Variable vo1 = smapper.pushT(vi1.getType());

  1142                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1143                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1144                             emit(out, " @1 = @2, @3 = @4;",

  1145                                  vo4, vo1, vo5, vo2);

  1146                         } else {

  1147                             final Variable vi4 = smapper.pop();

  1148                             final Variable vo6 = smapper.pushT(vi2.getType());

  1149                             final Variable vo5 = smapper.pushT(vi1.getType());

  1150                             final Variable vo4 = smapper.pushT(vi4.getType());

  1151                             final Variable vo3 = smapper.pushT(vi3.getType());

  1152                             final Variable vo2 = smapper.pushT(vi2.getType());

  1153                             final Variable vo1 = smapper.pushT(vi1.getType());

  1155                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1156                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1157                             emit(out, " @1 = @2, @3 = @4;",

  1158                                  vo5, vo1, vo6, vo2);

  1159                         }

  1160                     }

  1161                     break;

  1162                 }

  1163                 case opc_swap: {

  1164                     final Variable vi1 = smapper.get(0);

  1165                     final Variable vi2 = smapper.get(1);

  1167                     if (vi1.getType() == vi2.getType()) {

  1168                         final Variable tmp = smapper.pushT(vi1.getType());

  1170                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1171                              tmp, vi1, vi2);

  1172                         smapper.pop(1);

  1173                     } else {

  1174                         smapper.pop(2);

  1175                         smapper.pushT(vi1.getType());

  1176                         smapper.pushT(vi2.getType());

  1177                     }

  1178                     break;

  1179                 }

  1180                 case opc_bipush:

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

  1182                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1183                     break;

  1184                 case opc_sipush:

  1185                     emit(out, "var @1 = @2;",

  1186                          smapper.pushI(),

  1187                          Integer.toString(readIntArg(byteCodes, i)));

  1188                     i += 2;

  1189                     break;

  1190                 case opc_getfield: {

  1191                     int indx = readIntArg(byteCodes, i);

  1192                     String[] fi = jc.getFieldInfoName(indx);

  1193                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1194                     final String mangleClass = mangleSig(fi[0]);

  1195                     final String mangleClassAccess = accessClass(mangleClass);

  1196                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1197                          smapper.popA(),

  1198                          smapper.pushT(type), fi[1], mangleClassAccess

  1199                     );

  1200                     i += 2;

  1201                     break;

  1202                 }

  1203                 case opc_putfield: {

  1204                     int indx = readIntArg(byteCodes, i);

  1205                     String[] fi = jc.getFieldInfoName(indx);

  1206                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1207                     final String mangleClass = mangleSig(fi[0]);

  1208                     final String mangleClassAccess = accessClass(mangleClass);

  1209                     emit(out, "@4(false)._@3.call(@2, @1);",

  1210                          smapper.popT(type),

  1211                          smapper.popA(), fi[1],

  1212                          mangleClassAccess

  1213                     );

  1214                     i += 2;

  1215                     break;

  1216                 }

  1217                 case opc_getstatic: {

  1218                     int indx = readIntArg(byteCodes, i);

  1219                     String[] fi = jc.getFieldInfoName(indx);

  1220                     final int type = VarType.fromFieldType(fi[2].charAt(0));

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

  1222                          smapper.pushT(type),

  1223                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1224                     i += 2;

  1225                     addReference(fi[0]);

  1226                     break;

  1227                 }

  1228                 case opc_putstatic: {

  1229                     int indx = readIntArg(byteCodes, i);

  1230                     String[] fi = jc.getFieldInfoName(indx);

  1231                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1232                     emit(out, "@1(false)._@2(@3);",

  1233                          accessClass(fi[0].replace('/', '_')), fi[1],

  1234                          smapper.popT(type));

  1235                     i += 2;

  1236                     addReference(fi[0]);

  1237                     break;

  1238                 }

  1239                 case opc_checkcast: {

  1240                     int indx = readIntArg(byteCodes, i);

  1241                     generateCheckcast(indx, smapper);

  1242                     i += 2;

  1243                     break;

  1244                 }

  1245                 case opc_instanceof: {

  1246                     int indx = readIntArg(byteCodes, i);

  1247                     generateInstanceOf(indx, smapper);

  1248                     i += 2;

  1249                     break;

  1250                 }

  1251                 case opc_athrow: {

  1252                     final Variable v = smapper.popA();

  1253                     smapper.clear();

  1255                     emit(out, "{ var @1 = @2; throw @2; }",

  1256                          smapper.pushA(), v);

  1257                     break;

  1258                 }

  1260                 case opc_monitorenter: {

  1261                     out.append("/* monitor enter */");

  1262                     smapper.popA();

  1263                     break;

  1264                 }

  1266                 case opc_monitorexit: {

  1267                     out.append("/* monitor exit */");

  1268                     smapper.popA();

  1269                     break;

  1270                 }

  1272                 case opc_wide:

  1273                     wide = true;

  1274                     break;

  1276                 default: {

  1277                     wide = false;

  1278                     emit(out, "throw 'unknown bytecode @1';",

  1279                          Integer.toString(c));

  1280                 }

  1281             }

  1282             if (debug(" //")) {

  1283                 generateByteCodeComment(prev, i, byteCodes);

  1284             }

  1285             out.append("\n");

  1286         }

  1287         if (previousTrap != null) {

  1288             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1289         }

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

  1291         while (openBraces-- > 0) {

  1292             out.append('}');

  1293         }

  1294         out.append("\n};");

  1295     }

  1297     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1298         int indx = i + readIntArg(byteCodes, i);

  1299         out.append("if (").append(v1)

  1300            .append(' ').append(test).append(' ')

  1301            .append(v2).append(") ");

  1302         goTo(out, i, indx, topMostLabel);

  1303         return i + 2;

  1304     }

  1306     private int readIntArg(byte[] byteCodes, int offsetInstruction) {

  1307         final int indxHi = byteCodes[offsetInstruction + 1] << 8;

  1308         final int indxLo = byteCodes[offsetInstruction + 2];

  1309         return (indxHi & 0xffffff00) | (indxLo & 0xff);

  1310     }

  1311     private int readInt4(byte[] byteCodes, int offset) {

  1312         final int d = byteCodes[offset + 0] << 24;

  1313         final int c = byteCodes[offset + 1] << 16;

  1314         final int b = byteCodes[offset + 2] << 8;

  1315         final int a = byteCodes[offset + 3];

  1316         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1317     }

  1318     private int readUByte(byte[] byteCodes, int offset) {

  1319         return byteCodes[offset] & 0xff;

  1320     }

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

  1323         return ((byteCodes[offset] & 0xff) << 8)

  1324                     | (byteCodes[offset + 1] & 0xff);

  1325     }

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

  1328         return (byteCodes[offset] << 8)

  1329                     | (byteCodes[offset + 1] & 0xff);

  1330     }

  1332     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1333         int i = 0;

  1334         Boolean count = null;

  1335         boolean array = false;

  1336         sig.append("__");

  1337         int firstPos = sig.length();

  1338         while (i < descriptor.length()) {

  1339             char ch = descriptor.charAt(i++);

  1340             switch (ch) {

  1341                 case '(':

  1342                     count = true;

  1343                     continue;

  1344                 case ')':

  1345                     count = false;

  1346                     continue;

  1347                 case 'B':

  1348                 case 'C':

  1349                 case 'D':

  1350                 case 'F':

  1351                 case 'I':

  1352                 case 'J':

  1353                 case 'S':

  1354                 case 'Z':

  1355                     if (count) {

  1356                         if (array) {

  1357                             sig.append("_3");

  1358                         }

  1359                         sig.append(ch);

  1360                         if (ch == 'J' || ch == 'D') {

  1361                             cnt.append('1');

  1362                         } else {

  1363                             cnt.append('0');

  1364                         }

  1365                     } else {

  1366                         sig.insert(firstPos, ch);

  1367                         if (array) {

  1368                             returnType[0] = '[';

  1369                             sig.insert(firstPos, "_3");

  1370                         } else {

  1371                             returnType[0] = ch;

  1372                         }

  1373                     }

  1374                     array = false;

  1375                     continue;

  1376                 case 'V':

  1377                     assert !count;

  1378                     returnType[0] = 'V';

  1379                     sig.insert(firstPos, 'V');

  1380                     continue;

  1381                 case 'L':

  1382                     int next = descriptor.indexOf(';', i);

  1383                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1384                     if (count) {

  1385                         if (array) {

  1386                             sig.append("_3");

  1387                         }

  1388                         sig.append(realSig);

  1389                         cnt.append('0');

  1390                     } else {

  1391                         sig.insert(firstPos, realSig);

  1392                         if (array) {

  1393                             sig.insert(firstPos, "_3");

  1394                         }

  1395                         returnType[0] = 'L';

  1396                     }

  1397                     i = next + 1;

  1398                     array = false;

  1399                     continue;

  1400                 case '[':

  1401                     array = true;

  1402                     continue;

  1403                 default:

  1404                     throw new IllegalStateException("Invalid char: " + ch);

  1405             }

  1406         }

  1407     }

  1409     static String mangleSig(String sig) {

  1410         return mangleSig(sig, 0, sig.length());

  1411     }

  1413     private static String mangleSig(String txt, int first, int last) {

  1414         StringBuilder sb = new StringBuilder();

  1415         for (int i = first; i < last; i++) {

  1416             final char ch = txt.charAt(i);

  1417             switch (ch) {

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

  1419                 case '_': sb.append("_1"); break;

  1420                 case ';': sb.append("_2"); break;

  1421                 case '[': sb.append("_3"); break;

  1422                 default: sb.append(ch); break;

  1423             }

  1424         }

  1425         return sb.toString();

  1426     }

  1428     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1429         StringBuilder name = new StringBuilder();

  1430         if ("<init>".equals(m.getName())) { // NOI18N

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

  1432         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1433             name.append("class"); // NOI18N

  1434         } else {

  1435             name.append(m.getName());

  1436         }

  1438         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1439         return name.toString();

  1440     }

  1442     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1443         StringBuilder name = new StringBuilder();

  1444         String descr = mi[2];//mi.getDescriptor();

  1445         String nm= mi[1];

  1446         if ("<init>".equals(nm)) { // NOI18N

  1447             name.append("cons"); // NOI18N

  1448         } else {

  1449             name.append(nm);

  1450         }

  1451         countArgs(descr, returnType, name, cnt);

  1452         return name.toString();

  1453     }

  1455     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1456     throws IOException {

  1457         int methodIndex = readIntArg(byteCodes, i);

  1458         String[] mi = jc.getFieldInfoName(methodIndex);

  1459         char[] returnType = { 'V' };

  1460         StringBuilder cnt = new StringBuilder();

  1461         String mn = findMethodName(mi, cnt, returnType);

  1463         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1464         final Variable[] vars = new Variable[numArguments];

  1466         for (int j = numArguments - 1; j >= 0; --j) {

  1467             vars[j] = mapper.pop();

  1468         }

  1470         if (returnType[0] != 'V') {

  1471             out.append("var ")

  1472                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1473                .append(" = ");

  1474         }

  1476         final String in = mi[0];

  1477         out.append(accessClass(in.replace('/', '_')));

  1478         out.append("(false).");

  1479         if (mn.startsWith("cons_")) {

  1480             out.append("constructor.");

  1481         }

  1482         out.append(mn);

  1483         if (isStatic) {

  1484             out.append('(');

  1485         } else {

  1486             out.append(".call(");

  1487         }

  1488         if (numArguments > 0) {

  1489             out.append(vars[0]);

  1490             for (int j = 1; j < numArguments; ++j) {

  1491                 out.append(", ");

  1492                 out.append(vars[j]);

  1493             }

  1494         }

  1495         out.append(");");

  1496         i += 2;

  1497         addReference(in);

  1498         return i;

  1499     }

  1500     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1501     throws IOException {

  1502         int methodIndex = readIntArg(byteCodes, i);

  1503         String[] mi = jc.getFieldInfoName(methodIndex);

  1504         char[] returnType = { 'V' };

  1505         StringBuilder cnt = new StringBuilder();

  1506         String mn = findMethodName(mi, cnt, returnType);

  1508         final int numArguments = cnt.length() + 1;

  1509         final Variable[] vars = new Variable[numArguments];

  1511         for (int j = numArguments - 1; j >= 0; --j) {

  1512             vars[j] = mapper.pop();

  1513         }

  1515         if (returnType[0] != 'V') {

  1516             out.append("var ")

  1517                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1518                .append(" = ");

  1519         }

  1521         out.append(vars[0]).append('.');

  1522         out.append(mn);

  1523         out.append('(');

  1524         String sep = "";

  1525         for (int j = 1; j < numArguments; ++j) {

  1526             out.append(sep);

  1527             out.append(vars[j]);

  1528             sep = ", ";

  1529         }

  1530         out.append(");");

  1531         i += 2;

  1532         return i;

  1533     }

  1535     private void addReference(String cn) throws IOException {

  1536         if (requireReference(cn)) {

  1537             debug(" /* needs " + cn + " */");

  1538         }

  1539     }

  1541     private void outType(String d, StringBuilder out) {

  1542         int arr = 0;

  1543         while (d.charAt(0) == '[') {

  1544             out.append('A');

  1545             d = d.substring(1);

  1546         }

  1547         if (d.charAt(0) == 'L') {

  1548             assert d.charAt(d.length() - 1) == ';';

  1549             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1550         } else {

  1551             out.append(d);

  1552         }

  1553     }

  1555     private String encodeConstant(int entryIndex) throws IOException {

  1556         String[] classRef = { null };

  1557         String s = jc.stringValue(entryIndex, classRef);

  1558         if (classRef[0] != null) {

  1559             if (classRef[0].startsWith("[")) {

  1560                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1561             } else {

  1562                 addReference(classRef[0]);

  1563                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1564             }

  1565         }

  1566         return s;

  1567     }

  1569     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1570         byte[] arr = m.findAnnotationData(true);

  1571         if (arr == null) {

  1572             return null;

  1573         }

  1574         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1575         class P extends AnnotationParser {

  1576             public P() {

  1577                 super(false, true);

  1578             }

  1580             int cnt;

  1581             String[] args = new String[30];

  1582             String body;

  1584             @Override

  1585             protected void visitAttr(String type, String attr, String at, String value) {

  1586                 if (type.equals(jvmType)) {

  1587                     if ("body".equals(attr)) {

  1588                         body = value;

  1589                     } else if ("args".equals(attr)) {

  1590                         args[cnt++] = value;

  1591                     } else {

  1592                         throw new IllegalArgumentException(attr);

  1593                     }

  1594                 }

  1595             }

  1596         }

  1597         P p = new P();

  1598         p.parse(arr, jc);

  1599         if (p.body == null) {

  1600             return null;

  1601         }

  1602         StringBuilder cnt = new StringBuilder();

  1603         final String mn = findMethodName(m, cnt);

  1604         out.append(destObject).append(".").append(mn);

  1605         out.append(" = function(");

  1606         String space = "";

  1607         int index = 0;

  1608         for (int i = 0; i < cnt.length(); i++) {

  1609             out.append(space);

  1610             space = outputArg(out, p.args, index);

  1611             index++;

  1612         }

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

  1614         out.append(p.body);

  1615         out.append("\n}\n");

  1616         return mn;

  1617     }

  1618     private static String className(ClassData jc) {

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

  1620         return jc.getClassName().replace('/', '_');

  1621     }

  1623     private static String[] findAnnotation(

  1624         byte[] arr, ClassData cd, final String className,

  1625         final String... attrNames

  1626     ) throws IOException {

  1627         if (arr == null) {

  1628             return null;

  1629         }

  1630         final String[] values = new String[attrNames.length];

  1631         final boolean[] found = { false };

  1632         final String jvmType = "L" + className.replace('.', '/') + ";";

  1633         AnnotationParser ap = new AnnotationParser(false, true) {

  1634             @Override

  1635             protected void visitAttr(String type, String attr, String at, String value) {

  1636                 if (type.equals(jvmType)) {

  1637                     found[0] = true;

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

  1639                         if (attrNames[i].equals(attr)) {

  1640                             values[i] = value;

  1641                         }

  1642                     }

  1643                 }

  1644             }

  1646         };

  1647         ap.parse(arr, cd);

  1648         return found[0] ? values : null;

  1649     }

  1651     private CharSequence initField(FieldData v) {

  1652         final String is = v.getInternalSig();

  1653         if (is.length() == 1) {

  1654             switch (is.charAt(0)) {

  1655                 case 'S':

  1656                 case 'J':

  1657                 case 'B':

  1658                 case 'Z':

  1659                 case 'C':

  1660                 case 'I': return " = 0;";

  1661                 case 'F':

  1662                 case 'D': return " = 0.0;";

  1663                 default:

  1664                     throw new IllegalStateException(is);

  1665             }

  1666         }

  1667         return " = null;";

  1668     }

  1670     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1671         AnnotationParser ap = new AnnotationParser(true, false) {

  1672             int[] cnt = new int[32];

  1673             int depth;

  1675             @Override

  1676             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1677                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1678                 requireReference(slashType);

  1680                 if (cnt[depth]++ > 0) {

  1681                     out.append(",");

  1682                 }

  1683                 if (top) {

  1684                     out.append('"').append(attrType).append("\" : ");

  1685                 }

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

  1687                 cnt[++depth] = 0;

  1688             }

  1690             @Override

  1691             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1692                 out.append("\n}\n");

  1693                 depth--;

  1694             }

  1696             @Override

  1697             protected void visitValueStart(String attrName, char type) throws IOException {

  1698                 if (cnt[depth]++ > 0) {

  1699                     out.append(",\n");

  1700                 }

  1701                 cnt[++depth] = 0;

  1702                 if (attrName != null) {

  1703                     out.append(attrName).append(" : ");

  1704                 }

  1705                 if (type == '[') {

  1706                     out.append("[");

  1707                 }

  1708             }

  1710             @Override

  1711             protected void visitValueEnd(String attrName, char type) throws IOException {

  1712                 if (type == '[') {

  1713                     out.append("]");

  1714                 }

  1715                 depth--;

  1716             }

  1718             @Override

  1719             protected void visitAttr(String type, String attr, String attrType, String value)

  1720             throws IOException {

  1721                 if (attr == null && value == null) {

  1722                     return;

  1723                 }

  1724                 out.append(value);

  1725             }

  1727             @Override

  1728             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1729             throws IOException {

  1730                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1731                 requireReference(slashType);

  1733                 out.append(accessClass(slashType.replace('/', '_')))

  1734                    .append("(false).constructor.").append(value);

  1735             }

  1736         };

  1737         ap.parse(data, cd);

  1738     }

  1740     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1741         final String name = args[indx];

  1742         if (name == null) {

  1743             return "";

  1744         }

  1745         if (name.contains(",")) {

  1746             throw new IOException("Wrong parameter with ',': " + name);

  1747         }

  1748         out.append(name);

  1749         return ",";

  1750     }

  1752     private static void emit(final Appendable out,

  1753                              final String format,

  1754                              final CharSequence... params) throws IOException {

  1755         final int length = format.length();

  1757         int processed = 0;

  1758         int paramOffset = format.indexOf('@');

  1759         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1760             final char paramChar = format.charAt(paramOffset + 1);

  1761             if ((paramChar >= '1') && (paramChar <= '9')) {

  1762                 final int paramIndex = paramChar - '0' - 1;

  1764                 out.append(format, processed, paramOffset);

  1765                 out.append(params[paramIndex]);

  1767                 ++paramOffset;

  1768                 processed = paramOffset + 1;

  1769             }

  1771             paramOffset = format.indexOf('@', paramOffset + 1);

  1772         }

  1774         out.append(format, processed, length);

  1775     }

  1777     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1778         out.append("} catch (e) {\n");

  1779         int finallyPC = -1;

  1780         for (TrapData e : traps) {

  1781             if (e == null) {

  1782                 break;

  1783             }

  1784             if (e.catch_cpx != 0) { //not finally

  1785                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1786                 addReference(classInternalName);

  1787                 if ("java/lang/Throwable".equals(classInternalName)) {

  1788                     out.append("if (e.$instOf_java_lang_Throwable) {");

  1789                     out.append("  var stA0 = e;");

  1790                     out.append("} else {");

  1791                     out.append("  var stA0 = vm.java_lang_Throwable(true);");

  1792                     out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");

  1793                     out.append("}");

  1794                     goTo(out, current, e.handler_pc, topMostLabel);

  1795                 } else {

  1796                     out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1797                     out.append("var stA0 = e;");

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

  1799                     out.append("}\n");

  1800                 }

  1801             } else {

  1802                 finallyPC = e.handler_pc;

  1803             }

  1804         }

  1805         if (finallyPC == -1) {

  1806             out.append("throw e;");

  1807         } else {

  1808             out.append("var stA0 = e;");

  1809             goTo(out, current, finallyPC, topMostLabel);

  1810         }

  1811         out.append("\n}");

  1812     }

  1814     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1815         if (to < current) {

  1816             if (canBack < to) {

  1817                 out.append("{ gt = 0; continue X_" + to + "; }");

  1818             } else {

  1819                 out.append("{ gt = " + to + "; continue X_0; }");

  1820             }

  1821         } else {

  1822             out.append("{ gt = " + to + "; break IF; }");

  1823         }

  1824     }

  1826     private static void emitIf(

  1827         Appendable out, String pattern, Variable param,

  1828         int current, int to, int canBack

  1829     ) throws IOException {

  1830         emit(out, pattern, param);

  1831         goTo(out, current, to, canBack);

  1832     }

  1834     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1835         String jvmType;

  1836         switch (atype) {

  1837             case 4: jvmType = "[Z"; break;

  1838             case 5: jvmType = "[C"; break;

  1839             case 6: jvmType = "[F"; break;

  1840             case 7: jvmType = "[D"; break;

  1841             case 8: jvmType = "[B"; break;

  1842             case 9: jvmType = "[S"; break;

  1843             case 10: jvmType = "[I"; break;

  1844             case 11: jvmType = "[J"; break;

  1845             default: throw new IllegalStateException("Array type: " + atype);

  1846         }

  1847         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  1848              smapper.popI(), smapper.pushA(), jvmType);

  1849     }

  1851     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  1852         String typeName = jc.getClassName(type);

  1853         if (typeName.startsWith("[")) {

  1854             typeName = "[" + typeName;

  1855         } else {

  1856             typeName = "[L" + typeName + ";";

  1857         }

  1858         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  1859              smapper.popI(), smapper.pushA(), typeName);

  1860     }

  1862     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  1863         String typeName = jc.getClassName(type);

  1864         int dim = readUByte(byteCodes, ++i);

  1865         StringBuilder dims = new StringBuilder();

  1866         dims.append('[');

  1867         for (int d = 0; d < dim; d++) {

  1868             if (d != 0) {

  1869                 dims.insert(1, ",");

  1870             }

  1871             dims.insert(1, smapper.popI());

  1872         }

  1873         dims.append(']');

  1874         emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  1875              dims.toString(), smapper.pushA(), typeName);

  1876         return i;

  1877     }

  1879     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1880         int table = i / 4 * 4 + 4;

  1881         int dflt = i + readInt4(byteCodes, table);

  1882         table += 4;

  1883         int low = readInt4(byteCodes, table);

  1884         table += 4;

  1885         int high = readInt4(byteCodes, table);

  1886         table += 4;

  1887         out.append("switch (").append(smapper.popI()).append(") {\n");

  1888         while (low <= high) {

  1889             int offset = i + readInt4(byteCodes, table);

  1890             table += 4;

  1891             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  1892             low++;

  1893         }

  1894         out.append("  default: ");

  1895         goTo(out, i, dflt, topMostLabel);

  1896         out.append("\n}");

  1897         i = table - 1;

  1898         return i;

  1899     }

  1901     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  1902         int table = i / 4 * 4 + 4;

  1903         int dflt = i + readInt4(byteCodes, table);

  1904         table += 4;

  1905         int n = readInt4(byteCodes, table);

  1906         table += 4;

  1907         out.append("switch (").append(smapper.popI()).append(") {\n");

  1908         while (n-- > 0) {

  1909             int cnstnt = readInt4(byteCodes, table);

  1910             table += 4;

  1911             int offset = i + readInt4(byteCodes, table);

  1912             table += 4;

  1913             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

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

  1923         final String type = jc.getClassName(indx);

  1924         if (!type.startsWith("[")) {

  1925             emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  1926                  smapper.popA(), smapper.pushI(),

  1927                  type.replace('/', '_'));

  1928         } else {

  1929             emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

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

  1931                 type

  1932             );

  1933         }

  1934     }

  1936     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  1937         final String type = jc.getClassName(indx);

  1938         if (!type.startsWith("[")) {

  1939             emit(out,

  1940                  "if (@1 !== null && !@1.$instOf_@2) throw {};",

  1941                  smapper.getA(0), type.replace('/', '_'));

  1942         } else {

  1943             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);",

  1944                  smapper.getA(0), type

  1945             );

  1946         }

  1947     }

  1949     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  1950         for (int j = prev; j <= i; j++) {

  1951             out.append(" ");

  1952             final int cc = readUByte(byteCodes, j);

  1953             out.append(Integer.toString(cc));

  1954         }

  1955     }

  1956 }

author	Lubomir Nerad <lubomir.nerad@oracle.com>
	Thu, 21 Mar 2013 18:48:46 +0100
branch	closure
changeset 869	151f4ccd7673
parent 861	f41a1fef7738
child 880	32eb44c74e1e
permissions	-rw-r--r--