hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@16f50abb439b

     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 implements Appendable {

    29     private ClassData jc;

    30     private final Appendable out;

    31     private boolean outChanged;

    32     final ObfuscationDelegate obfuscationDelegate;

    34     protected ByteCodeToJavaScript(Appendable out) {

    35         this(out, ObfuscationDelegate.NULL);

    36     }

    38     protected ByteCodeToJavaScript(

    39             Appendable out, ObfuscationDelegate obfuscationDelegate) {

    40         this.out = out;

    41         this.obfuscationDelegate = obfuscationDelegate;

    42     }

    44     @Override

    45     public final Appendable append(CharSequence csq) throws IOException {

    46         out.append(csq);

    47         outChanged = true;

    48         return this;

    49     }

    51     @Override

    52     public final Appendable append(CharSequence csq, int start, int end) throws IOException {

    53         out.append(csq, start, end);

    54         outChanged = true;

    55         return this;

    56     }

    58     @Override

    59     public final Appendable append(char c) throws IOException {

    60         out.append(c);

    61         outChanged = true;

    62         return this;

    63     }

    65     /* Collects additional required resources.

    66      *

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

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

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

    70      */

    71     protected abstract boolean requireReference(String internalClassName);

    73     /*

    74      * @param resourcePath name of resources to read

    75      */

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

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

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

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

    81      *

    82      * @param className suggested name of the class

    83      */

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

    85         return className + " = ";

    86     }

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

    88         return classOperation;

    89     }

    91     abstract String getVMObject();

    93     /** Prints out a debug message.

    94      *

    95      * @param msg the message

    96      * @return true if the message has been printed

    97      * @throws IOException

    98      */

    99     boolean debug(String msg) throws IOException {

   100         append(msg);

   101         return true;

   102     }

   104     /**

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

   106      *

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

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

   109      *

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

   111      */

   113     public String compile(InputStream classFile) throws IOException {

   114         this.jc = new ClassData(classFile);

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

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

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

   118             );

   119         }

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

   121         {

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

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

   124                 "resource", "processByteCode"

   125             );

   126             if (arr != null) {

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

   128                     requireScript(arr[0]);

   129                 }

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

   131                     return null;

   132                 }

   133             }

   134         }

   135         {

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

   137                 "net.java.html.js.JavaScriptResource",

   138                 "value"

   139             );

   140             if (arr != null) {

   141                 if (arr[0].startsWith("/")) {

   142                     requireScript(arr[0]);

   143                 } else {

   144                     int last = jc.getClassName().lastIndexOf('/');

   145                     requireScript(

   146                         jc.getClassName().substring(0, last + 1).replace('.', '/') + arr[0]

   147                     );

   148                 }

   149             }

   150         }

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

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

   153             "container", "prototype"

   154         );

   155         StringArray toInitilize = new StringArray();

   156         final String className = className(jc);

   157         append("\n\n").append(assignClass(className));

   158         append("function ").append(className).append("() {");

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

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

   161         if (proto == null) {

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

   163             append("\n    var pp = ").

   164                 append(accessClass(mangleClassName(sc))).append("(true);");

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

   166             append("\n    var c = p;");

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

   168         } else {

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

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

   171                 proto[0] = "p";

   172             }

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

   174             append("\n    var sprcls = null;");

   175         }

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

   177             if (v.isStatic()) {

   178                 if ((v.access & ACC_FINAL) != 0 && v.hasConstantValue()) {

   179                     if (v.getInternalSig().length() == 1 || v.getInternalSig().equals("Ljava/lang/String;")) {

   180                         continue;

   181                     }

   182                 }

   183                 append("\n  CLS.fld_").append(v.getName()).append(initField(v));

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

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

   186                    .append(" = v; return CLS.fld_").

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

   188             } else {

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

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

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

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

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

   194                    .append("; };");

   195             }

   197             obfuscationDelegate.exportField(this, "c", "_" + v.getName(), v);

   198         }

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

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

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

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

   203                 "name", "value"

   204             );

   205             if (only != null) {

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

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

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

   209                 }

   210                 continue;

   211             }

   212             String destObject;

   213             String mn;

   214             append("\n    ");

   215             if (m.isStatic()) {

   216                 destObject = "c";

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

   218             } else {

   219                 if (m.isConstructor()) {

   220                     destObject = "CLS";

   221                     mn = generateInstanceMethod(destObject, m);

   222                 } else {

   223                     destObject = "c";

   224                     mn = generateInstanceMethod(destObject, m);

   225                 }

   226             }

   227             obfuscationDelegate.exportMethod(this, destObject, mn, m);

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

   229             if (runAnno != null) {

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

   231                 generateAnno(jc, runAnno);

   232                 append("\n    };");

   233             }

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

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

   236         }

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

   238         append("\n    function fillInstOf(x) {");

   239         String instOfName = "$instOf_" + className;

   240         append("\n        x.").append(instOfName).append(" = true;");

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

   242             String intrfc = superInterface.replace('/', '_');

   243             append("\n      vm.").append(intrfc).append("(false).fillInstOf(x);");

   244             requireReference(superInterface);

   245         }

   246         append("\n    }");

   247         append("\n    c.fillInstOf = fillInstOf;");

   248         append("\n    fillInstOf(c);");

   249         obfuscationDelegate.exportJSProperty(this, "c", instOfName);

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

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

   252         append(accessClass("java_lang_Class(true);"));

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

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

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

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

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

   258         if (classAnno != null) {

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

   260             generateAnno(jc, classAnno);

   261             append("\n    };");

   262         }

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

   264             append("\n    ").append(init).append("();");

   265         }

   266         append("\n  }");

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

   268         append("\n    if (!(this instanceof CLS)) {");

   269         append("\n      return new CLS();");

   270         append("\n    }");

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

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

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

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

   275                 "name", "value"

   276             );

   277             if (only != null) {

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

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

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

   281                 }

   282                 continue;

   283             }

   284             if (!v.isStatic()) {

   285                 append("\n    this.fld_").

   286                     append(className).append('_').

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

   288             }

   289         }

   290         append("\n    return this;");

   291         append("\n  }");

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

   293         append("\n};");

   295         obfuscationDelegate.exportClass(this, getVMObject(), className, jc);

   297 //        StringBuilder sb = new StringBuilder();

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

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

   300 //        }

   301         return "";

   302     }

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

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

   305         if (jsb != null) {

   306             return jsb;

   307         }

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

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

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

   311         }

   312         generateMethod(destObject, mn, m);

   313         return mn;

   314     }

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

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

   318         if (jsb != null) {

   319             return jsb;

   320         }

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

   322         generateMethod(destObject, mn, m);

   323         return mn;

   324     }

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

   327             throws IOException {

   328         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   329         TrapDataIterator trap = m.getTrapDataIterator();

   330         final LocalsMapper lmapper =

   331                 new LocalsMapper(stackMapIterator.getArguments());

   333         append(destObject).append(".").append(name).append(" = function(");

   334         lmapper.outputArguments(this, m.isStatic());

   335         append(") {").append("\n");

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

   338         if (byteCodes == null) {

   339             append("  throw 'no code found for ")

   340                .append(jc.getClassName()).append('.')

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

   342             append("};");

   343             return;

   344         }

   346         final StackMapper smapper = new StackMapper();

   348         if (!m.isStatic()) {

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

   350         }

   352         int lastStackFrame;

   353         TrapData[] previousTrap = null;

   354         boolean wide = false;

   355         boolean didBranches;

   356         if (stackMapIterator.isEmpty()) {

   357             didBranches = false;

   358             lastStackFrame = 0;

   359         } else {

   360             didBranches = true;

   361             lastStackFrame = -1;

   362             append("\n  var gt = 0;\n");

   363         }

   365         int openBraces = 0;

   366         int topMostLabel = 0;

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

   368             int prev = i;

   369             stackMapIterator.advanceTo(i);

   370             boolean changeInCatch = trap.advanceTo(i);

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

   372                 if (previousTrap != null) {

   373                     generateCatch(previousTrap, i, topMostLabel);

   374                     previousTrap = null;

   375                 }

   376             }

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

   378                 smapper.flush(this);

   379                 if (i != 0) {

   380                     append("    }\n");

   381                 }

   382                 if (openBraces > 64) {

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

   384                         append("break;}\n");

   385                     }

   386                     openBraces = 1;

   387                     topMostLabel = i;

   388                 }

   390                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   394                 openBraces++;

   395                 changeInCatch = true;

   396             } else {

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

   398             }

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

   400                 append("try {");

   401                 previousTrap = trap.current();

   402             }

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

   404             switch (c) {

   405                 case opc_aload_0:

   406                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(0));

   407                     break;

   408                 case opc_iload_0:

   409                     smapper.assign(this, VarType.INTEGER, lmapper.getI(0));

   410                     break;

   411                 case opc_lload_0:

   412                     smapper.assign(this, VarType.LONG, lmapper.getL(0));

   413                     break;

   414                 case opc_fload_0:

   415                     smapper.assign(this, VarType.FLOAT, lmapper.getF(0));

   416                     break;

   417                 case opc_dload_0:

   418                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(0));

   419                     break;

   420                 case opc_aload_1:

   421                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(1));

   422                     break;

   423                 case opc_iload_1:

   424                     smapper.assign(this, VarType.INTEGER, lmapper.getI(1));

   425                     break;

   426                 case opc_lload_1:

   427                     smapper.assign(this, VarType.LONG, lmapper.getL(1));

   428                     break;

   429                 case opc_fload_1:

   430                     smapper.assign(this, VarType.FLOAT, lmapper.getF(1));

   431                     break;

   432                 case opc_dload_1:

   433                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(1));

   434                     break;

   435                 case opc_aload_2:

   436                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(2));

   437                     break;

   438                 case opc_iload_2:

   439                     smapper.assign(this, VarType.INTEGER, lmapper.getI(2));

   440                     break;

   441                 case opc_lload_2:

   442                     smapper.assign(this, VarType.LONG, lmapper.getL(2));

   443                     break;

   444                 case opc_fload_2:

   445                     smapper.assign(this, VarType.FLOAT, lmapper.getF(2));

   446                     break;

   447                 case opc_dload_2:

   448                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(2));

   449                     break;

   450                 case opc_aload_3:

   451                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(3));

   452                     break;

   453                 case opc_iload_3:

   454                     smapper.assign(this, VarType.INTEGER, lmapper.getI(3));

   455                     break;

   456                 case opc_lload_3:

   457                     smapper.assign(this, VarType.LONG, lmapper.getL(3));

   458                     break;

   459                 case opc_fload_3:

   460                     smapper.assign(this, VarType.FLOAT, lmapper.getF(3));

   461                     break;

   462                 case opc_dload_3:

   463                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(3));

   464                     break;

   465                 case opc_iload: {

   466                     ++i;

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

   468                                           : readUByte(byteCodes, i);

   469                     wide = false;

   470                     smapper.assign(this, VarType.INTEGER, lmapper.getI(indx));

   471                     break;

   472                 }

   473                 case opc_lload: {

   474                     ++i;

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

   476                                           : readUByte(byteCodes, i);

   477                     wide = false;

   478                     smapper.assign(this, VarType.LONG, lmapper.getL(indx));

   479                     break;

   480                 }

   481                 case opc_fload: {

   482                     ++i;

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

   484                                           : readUByte(byteCodes, i);

   485                     wide = false;

   486                     smapper.assign(this, VarType.FLOAT, lmapper.getF(indx));

   487                     break;

   488                 }

   489                 case opc_dload: {

   490                     ++i;

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

   492                                           : readUByte(byteCodes, i);

   493                     wide = false;

   494                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(indx));

   495                     break;

   496                 }

   497                 case opc_aload: {

   498                     ++i;

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

   500                                           : readUByte(byteCodes, i);

   501                     wide = false;

   502                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(indx));

   503                     break;

   504                 }

   505                 case opc_istore: {

   506                     ++i;

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

   508                                           : readUByte(byteCodes, i);

   509                     wide = false;

   510                     emit(smapper, this, "var @1 = @2;",

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

   512                     break;

   513                 }

   514                 case opc_lstore: {

   515                     ++i;

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

   517                                           : readUByte(byteCodes, i);

   518                     wide = false;

   519                     emit(smapper, this, "var @1 = @2;",

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

   521                     break;

   522                 }

   523                 case opc_fstore: {

   524                     ++i;

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

   526                                           : readUByte(byteCodes, i);

   527                     wide = false;

   528                     emit(smapper, this, "var @1 = @2;",

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

   530                     break;

   531                 }

   532                 case opc_dstore: {

   533                     ++i;

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

   535                                           : readUByte(byteCodes, i);

   536                     wide = false;

   537                     emit(smapper, this, "var @1 = @2;",

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

   539                     break;

   540                 }

   541                 case opc_astore: {

   542                     ++i;

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

   544                                           : readUByte(byteCodes, i);

   545                     wide = false;

   546                     emit(smapper, this, "var @1 = @2;",

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

   548                     break;

   549                 }

   550                 case opc_astore_0:

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

   552                     break;

   553                 case opc_istore_0:

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

   555                     break;

   556                 case opc_lstore_0:

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

   558                     break;

   559                 case opc_fstore_0:

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

   561                     break;

   562                 case opc_dstore_0:

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

   564                     break;

   565                 case opc_astore_1:

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

   567                     break;

   568                 case opc_istore_1:

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

   570                     break;

   571                 case opc_lstore_1:

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

   573                     break;

   574                 case opc_fstore_1:

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

   576                     break;

   577                 case opc_dstore_1:

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

   579                     break;

   580                 case opc_astore_2:

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

   582                     break;

   583                 case opc_istore_2:

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

   585                     break;

   586                 case opc_lstore_2:

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

   588                     break;

   589                 case opc_fstore_2:

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

   591                     break;

   592                 case opc_dstore_2:

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

   594                     break;

   595                 case opc_astore_3:

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

   597                     break;

   598                 case opc_istore_3:

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

   600                     break;

   601                 case opc_lstore_3:

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

   603                     break;

   604                 case opc_fstore_3:

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

   606                     break;

   607                 case opc_dstore_3:

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

   609                     break;

   610                 case opc_iadd:

   611                     smapper.replace(this, VarType.INTEGER, "(@1).add32(@2)", smapper.getI(1), smapper.popI());

   612                     break;

   613                 case opc_ladd:

   614                     smapper.replace(this, VarType.LONG, "(@1).add64(@2)", smapper.getL(1), smapper.popL());

   615                     break;

   616                 case opc_fadd:

   617                     smapper.replace(this, VarType.FLOAT, "(@1 + @2)", smapper.getF(1), smapper.popF());

   618                     break;

   619                 case opc_dadd:

   620                     smapper.replace(this, VarType.DOUBLE, "(@1 + @2)", smapper.getD(1), smapper.popD());

   621                     break;

   622                 case opc_isub:

   623                     smapper.replace(this, VarType.INTEGER, "(@1).sub32(@2)", smapper.getI(1), smapper.popI());

   624                     break;

   625                 case opc_lsub:

   626                     smapper.replace(this, VarType.LONG, "(@1).sub64(@2)", smapper.getL(1), smapper.popL());

   627                     break;

   628                 case opc_fsub:

   629                     smapper.replace(this, VarType.FLOAT, "(@1 - @2)", smapper.getF(1), smapper.popF());

   630                     break;

   631                 case opc_dsub:

   632                     smapper.replace(this, VarType.DOUBLE, "(@1 - @2)", smapper.getD(1), smapper.popD());

   633                     break;

   634                 case opc_imul:

   635                     smapper.replace(this, VarType.INTEGER, "(@1).mul32(@2)", smapper.getI(1), smapper.popI());

   636                     break;

   637                 case opc_lmul:

   638                     smapper.replace(this, VarType.LONG, "(@1).mul64(@2)", smapper.getL(1), smapper.popL());

   639                     break;

   640                 case opc_fmul:

   641                     smapper.replace(this, VarType.FLOAT, "(@1 * @2)", smapper.getF(1), smapper.popF());

   642                     break;

   643                 case opc_dmul:

   644                     smapper.replace(this, VarType.DOUBLE, "(@1 * @2)", smapper.getD(1), smapper.popD());

   645                     break;

   646                 case opc_idiv:

   647                     smapper.replace(this, VarType.INTEGER, "(@1).div32(@2)",

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

   649                     break;

   650                 case opc_ldiv:

   651                     smapper.replace(this, VarType.LONG, "(@1).div64(@2)",

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

   653                     break;

   654                 case opc_fdiv:

   655                     smapper.replace(this, VarType.FLOAT, "(@1 / @2)", smapper.getF(1), smapper.popF());

   656                     break;

   657                 case opc_ddiv:

   658                     smapper.replace(this, VarType.DOUBLE, "(@1 / @2)", smapper.getD(1), smapper.popD());

   659                     break;

   660                 case opc_irem:

   661                     smapper.replace(this, VarType.INTEGER, "(@1).mod32(@2)",

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

   663                     break;

   664                 case opc_lrem:

   665                     smapper.replace(this, VarType.LONG, "(@1).mod64(@2)",

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

   667                     break;

   668                 case opc_frem:

   669                     smapper.replace(this, VarType.FLOAT, "(@1 % @2)", smapper.getF(1), smapper.popF());

   670                     break;

   671                 case opc_drem:

   672                     smapper.replace(this, VarType.DOUBLE, "(@1 % @2)", smapper.getD(1), smapper.popD());

   673                     break;

   674                 case opc_iand:

   675                     smapper.replace(this, VarType.INTEGER, "(@1 & @2)", smapper.getI(1), smapper.popI());

   676                     break;

   677                 case opc_land:

   678                     smapper.replace(this, VarType.LONG, "(@1).and64(@2)", smapper.getL(1), smapper.popL());

   679                     break;

   680                 case opc_ior:

   681                     smapper.replace(this, VarType.INTEGER, "(@1 | @2)", smapper.getI(1), smapper.popI());

   682                     break;

   683                 case opc_lor:

   684                     smapper.replace(this, VarType.LONG, "(@1).or64(@2)", smapper.getL(1), smapper.popL());

   685                     break;

   686                 case opc_ixor:

   687                     smapper.replace(this, VarType.INTEGER, "(@1 ^ @2)", smapper.getI(1), smapper.popI());

   688                     break;

   689                 case opc_lxor:

   690                     smapper.replace(this, VarType.LONG, "(@1).xor64(@2)", smapper.getL(1), smapper.popL());

   691                     break;

   692                 case opc_ineg:

   693                     smapper.replace(this, VarType.INTEGER, "(@1).neg32()", smapper.getI(0));

   694                     break;

   695                 case opc_lneg:

   696                     smapper.replace(this, VarType.LONG, "(@1).neg64()", smapper.getL(0));

   697                     break;

   698                 case opc_fneg:

   699                     smapper.replace(this, VarType.FLOAT, "(-@1)", smapper.getF(0));

   700                     break;

   701                 case opc_dneg:

   702                     smapper.replace(this, VarType.DOUBLE, "(-@1)", smapper.getD(0));

   703                     break;

   704                 case opc_ishl:

   705                     smapper.replace(this, VarType.INTEGER, "(@1 << @2)", smapper.getI(1), smapper.popI());

   706                     break;

   707                 case opc_lshl:

   708                     smapper.replace(this, VarType.LONG, "(@1).shl64(@2)", smapper.getL(1), smapper.popI());

   709                     break;

   710                 case opc_ishr:

   711                     smapper.replace(this, VarType.INTEGER, "(@1 >> @2)", smapper.getI(1), smapper.popI());

   712                     break;

   713                 case opc_lshr:

   714                     smapper.replace(this, VarType.LONG, "(@1).shr64(@2)", smapper.getL(1), smapper.popI());

   715                     break;

   716                 case opc_iushr:

   717                     smapper.replace(this, VarType.INTEGER, "(@1 >>> @2)", smapper.getI(1), smapper.popI());

   718                     break;

   719                 case opc_lushr:

   720                     smapper.replace(this, VarType.LONG, "(@1).ushr64(@2)", smapper.getL(1), smapper.popI());

   721                     break;

   722                 case opc_iinc: {

   723                     ++i;

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

   725                                              : readUByte(byteCodes, i);

   726                     ++i;

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

   728                                             : byteCodes[i];

   729                     wide = false;

   730                     if (incrBy == 1) {

   731                         emit(smapper, this, "@1++;", lmapper.getI(varIndx));

   732                     } else {

   733                         emit(smapper, this, "@1 += @2;",

   734                              lmapper.getI(varIndx),

   735                              Integer.toString(incrBy));

   736                     }

   737                     break;

   738                 }

   739                 case opc_return:

   740                     emit(smapper, this, "return;");

   741                     break;

   742                 case opc_ireturn:

   743                     emit(smapper, this, "return @1;", smapper.popI());

   744                     break;

   745                 case opc_lreturn:

   746                     emit(smapper, this, "return @1;", smapper.popL());

   747                     break;

   748                 case opc_freturn:

   749                     emit(smapper, this, "return @1;", smapper.popF());

   750                     break;

   751                 case opc_dreturn:

   752                     emit(smapper, this, "return @1;", smapper.popD());

   753                     break;

   754                 case opc_areturn:

   755                     emit(smapper, this, "return @1;", smapper.popA());

   756                     break;

   757                 case opc_i2l:

   758                     smapper.replace(this, VarType.LONG, "@1", smapper.getI(0));

   759                     break;

   760                 case opc_i2f:

   761                     smapper.replace(this, VarType.FLOAT, "@1", smapper.getI(0));

   762                     break;

   763                 case opc_i2d:

   764                     smapper.replace(this, VarType.DOUBLE, "@1", smapper.getI(0));

   765                     break;

   766                 case opc_l2i:

   767                     smapper.replace(this, VarType.INTEGER, "(@1).toInt32()", smapper.getL(0));

   768                     break;

   769                     // max int check?

   770                 case opc_l2f:

   771                     smapper.replace(this, VarType.FLOAT, "(@1).toFP()", smapper.getL(0));

   772                     break;

   773                 case opc_l2d:

   774                     smapper.replace(this, VarType.DOUBLE, "(@1).toFP()", smapper.getL(0));

   775                     break;

   776                 case opc_f2d:

   777                     smapper.replace(this, VarType.DOUBLE, "@1",

   778                          smapper.getF(0));

   779                     break;

   780                 case opc_d2f:

   781                     smapper.replace(this, VarType.FLOAT, "@1",

   782                          smapper.getD(0));

   783                     break;

   784                 case opc_f2i:

   785                     smapper.replace(this, VarType.INTEGER, "(@1).toInt32()",

   786                          smapper.getF(0));

   787                     break;

   788                 case opc_f2l:

   789                     smapper.replace(this, VarType.LONG, "(@1).toLong()",

   790                          smapper.getF(0));

   791                     break;

   792                 case opc_d2i:

   793                     smapper.replace(this, VarType.INTEGER, "(@1).toInt32()",

   794                          smapper.getD(0));

   795                     break;

   796                 case opc_d2l:

   797                     smapper.replace(this, VarType.LONG, "(@1).toLong()", smapper.getD(0));

   798                     break;

   799                 case opc_i2b:

   800                     smapper.replace(this, VarType.INTEGER, "(@1).toInt8()", smapper.getI(0));

   801                     break;

   802                 case opc_i2c:

   803                     break;

   804                 case opc_i2s:

   805                     smapper.replace(this, VarType.INTEGER, "(@1).toInt16()", smapper.getI(0));

   806                     break;

   807                 case opc_aconst_null:

   808                     smapper.assign(this, VarType.REFERENCE, "null");

   809                     break;

   810                 case opc_iconst_m1:

   811                     smapper.assign(this, VarType.INTEGER, "-1");

   812                     break;

   813                 case opc_iconst_0:

   814                     smapper.assign(this, VarType.INTEGER, "0");

   815                     break;

   816                 case opc_dconst_0:

   817                     smapper.assign(this, VarType.DOUBLE, "0");

   818                     break;

   819                 case opc_lconst_0:

   820                     smapper.assign(this, VarType.LONG, "0");

   821                     break;

   822                 case opc_fconst_0:

   823                     smapper.assign(this, VarType.FLOAT, "0");

   824                     break;

   825                 case opc_iconst_1:

   826                     smapper.assign(this, VarType.INTEGER, "1");

   827                     break;

   828                 case opc_lconst_1:

   829                     smapper.assign(this, VarType.LONG, "1");

   830                     break;

   831                 case opc_fconst_1:

   832                     smapper.assign(this, VarType.FLOAT, "1");

   833                     break;

   834                 case opc_dconst_1:

   835                     smapper.assign(this, VarType.DOUBLE, "1");

   836                     break;

   837                 case opc_iconst_2:

   838                     smapper.assign(this, VarType.INTEGER, "2");

   839                     break;

   840                 case opc_fconst_2:

   841                     smapper.assign(this, VarType.FLOAT, "2");

   842                     break;

   843                 case opc_iconst_3:

   844                     smapper.assign(this, VarType.INTEGER, "3");

   845                     break;

   846                 case opc_iconst_4:

   847                     smapper.assign(this, VarType.INTEGER, "4");

   848                     break;

   849                 case opc_iconst_5:

   850                     smapper.assign(this, VarType.INTEGER, "5");

   851                     break;

   852                 case opc_ldc: {

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

   854                     String v = encodeConstant(indx);

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

   856                     smapper.assign(this, type, v);

   857                     break;

   858                 }

   859                 case opc_ldc_w:

   860                 case opc_ldc2_w: {

   861                     int indx = readUShortArg(byteCodes, i);

   862                     i += 2;

   863                     String v = encodeConstant(indx);

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

   865                     if (type == VarType.LONG) {

   866                         final Long lv = new Long(v);

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

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

   869                         if (hi == 0) {

   870                             smapper.assign(this, VarType.LONG, "0x" + Integer.toHexString(low));

   871                         } else {

   872                             smapper.assign(this, VarType.LONG,

   873                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   874                                     Integer.toHexString(low) + ")"

   875                             );

   876                         }

   877                     } else {

   878                         smapper.assign(this, type, v);

   879                     }

   880                     break;

   881                 }

   882                 case opc_lcmp:

   883                     smapper.replace(this, VarType.INTEGER, "(@2).compare64(@1)", smapper.popL(), smapper.getL(0));

   884                     break;

   885                 case opc_fcmpl:

   886                 case opc_fcmpg:

   887                     smapper.replace(this, VarType.INTEGER, "(@2).compare(@1)", smapper.popF(), smapper.getF(0));

   888                     break;

   889                 case opc_dcmpl:

   890                 case opc_dcmpg:

   891                     smapper.replace(this, VarType.INTEGER, "(@2).compare(@1)", smapper.popD(), smapper.getD(0));

   892                     break;

   893                 case opc_if_acmpeq:

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

   895                                    "===", topMostLabel);

   896                     break;

   897                 case opc_if_acmpne:

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

   899                                    "!==", topMostLabel);

   900                     break;

   901                 case opc_if_icmpeq:

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

   903                                    "==", topMostLabel);

   904                     break;

   905                 case opc_ifeq: {

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

   907                     emitIf(smapper, this, "if ((@1) == 0) ",

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

   909                     i += 2;

   910                     break;

   911                 }

   912                 case opc_ifne: {

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

   914                     emitIf(smapper, this, "if ((@1) != 0) ",

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

   916                     i += 2;

   917                     break;

   918                 }

   919                 case opc_iflt: {

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

   921                     emitIf(smapper, this, "if ((@1) < 0) ",

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

   923                     i += 2;

   924                     break;

   925                 }

   926                 case opc_ifle: {

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

   928                     emitIf(smapper, this, "if ((@1) <= 0) ",

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

   930                     i += 2;

   931                     break;

   932                 }

   933                 case opc_ifgt: {

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

   935                     emitIf(smapper, this, "if ((@1) > 0) ",

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

   937                     i += 2;

   938                     break;

   939                 }

   940                 case opc_ifge: {

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

   942                     emitIf(smapper, this, "if ((@1) >= 0) ",

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

   944                     i += 2;

   945                     break;

   946                 }

   947                 case opc_ifnonnull: {

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

   949                     emitIf(smapper, this, "if ((@1) !== null) ",

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

   951                     i += 2;

   952                     break;

   953                 }

   954                 case opc_ifnull: {

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

   956                     emitIf(smapper, this, "if ((@1) === null) ",

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

   958                     i += 2;

   959                     break;

   960                 }

   961                 case opc_if_icmpne:

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

   963                                    "!=", topMostLabel);

   964                     break;

   965                 case opc_if_icmplt:

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

   967                                    "<", topMostLabel);

   968                     break;

   969                 case opc_if_icmple:

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

   971                                    "<=", topMostLabel);

   972                     break;

   973                 case opc_if_icmpgt:

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

   975                                    ">", topMostLabel);

   976                     break;

   977                 case opc_if_icmpge:

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

   979                                    ">=", topMostLabel);

   980                     break;

   981                 case opc_goto: {

   982                     smapper.flush(this);

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

   984                     goTo(this, i, indx, topMostLabel);

   985                     i += 2;

   986                     break;

   987                 }

   988                 case opc_lookupswitch: {

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

   990                     break;

   991                 }

   992                 case opc_tableswitch: {

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

   994                     break;

   995                 }

   996                 case opc_invokeinterface: {

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

   998                     break;

   999                 }

  1000                 case opc_invokevirtual:

  1001                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1002                     break;

  1003                 case opc_invokespecial:

  1004                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1005                     break;

  1006                 case opc_invokestatic:

  1007                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1008                     break;

  1009                 case opc_new: {

  1010                     int indx = readUShortArg(byteCodes, i);

  1011                     String ci = jc.getClassName(indx);

  1012                     emit(smapper, this, "var @1 = new @2;",

  1013                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1014                     addReference(ci);

  1015                     i += 2;

  1016                     break;

  1017                 }

  1018                 case opc_newarray:

  1019                     int atype = readUByte(byteCodes, ++i);

  1020                     generateNewArray(atype, smapper);

  1021                     break;

  1022                 case opc_anewarray: {

  1023                     int type = readUShortArg(byteCodes, i);

  1024                     i += 2;

  1025                     generateANewArray(type, smapper);

  1026                     break;

  1027                 }

  1028                 case opc_multianewarray: {

  1029                     int type = readUShortArg(byteCodes, i);

  1030                     i += 2;

  1031                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1032                     break;

  1033                 }

  1034                 case opc_arraylength:

  1035                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1036                     break;

  1037                 case opc_lastore:

  1038                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1039                          smapper.popL(), smapper.popI(), smapper.popA());

  1040                     break;

  1041                 case opc_fastore:

  1042                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1043                          smapper.popF(), smapper.popI(), smapper.popA());

  1044                     break;

  1045                 case opc_dastore:

  1046                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1047                          smapper.popD(), smapper.popI(), smapper.popA());

  1048                     break;

  1049                 case opc_aastore:

  1050                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1051                          smapper.popA(), smapper.popI(), smapper.popA());

  1052                     break;

  1053                 case opc_iastore:

  1054                 case opc_bastore:

  1055                 case opc_castore:

  1056                 case opc_sastore:

  1057                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1058                          smapper.popI(), smapper.popI(), smapper.popA());

  1059                     break;

  1060                 case opc_laload:

  1061                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1062                          smapper.popI(), smapper.getA(0));

  1063                     break;

  1064                 case opc_faload:

  1065                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1066                          smapper.popI(), smapper.getA(0));

  1067                     break;

  1068                 case opc_daload:

  1069                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1070                          smapper.popI(), smapper.getA(0));

  1071                     break;

  1072                 case opc_aaload:

  1073                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1074                          smapper.popI(), smapper.getA(0));

  1075                     break;

  1076                 case opc_iaload:

  1077                 case opc_baload:

  1078                 case opc_caload:

  1079                 case opc_saload:

  1080                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1081                          smapper.popI(), smapper.getA(0));

  1082                     break;

  1083                 case opc_pop:

  1084                 case opc_pop2:

  1085                     smapper.pop(1);

  1086                     debug("/* pop */");

  1087                     break;

  1088                 case opc_dup: {

  1089                     final Variable v = smapper.get(0);

  1090                     emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1091                     break;

  1092                 }

  1093                 case opc_dup2: {

  1094                     final Variable vi1 = smapper.get(0);

  1096                     if (vi1.isCategory2()) {

  1097                         emit(smapper, this, "var @1 = @2;",

  1098                              smapper.pushT(vi1.getType()), vi1);

  1099                     } else {

  1100                         final Variable vi2 = smapper.get(1);

  1101                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1102                              smapper.pushT(vi2.getType()), vi2,

  1103                              smapper.pushT(vi1.getType()), vi1);

  1104                     }

  1105                     break;

  1106                 }

  1107                 case opc_dup_x1: {

  1108                     final Variable vi1 = smapper.pop(this);

  1109                     final Variable vi2 = smapper.pop(this);

  1110                     final Variable vo3 = smapper.pushT(vi1.getType());

  1111                     final Variable vo2 = smapper.pushT(vi2.getType());

  1112                     final Variable vo1 = smapper.pushT(vi1.getType());

  1114                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1115                          vo1, vi1, vo2, vi2, vo3, vo1);

  1116                     break;

  1117                 }

  1118                 case opc_dup2_x1: {

  1119                     final Variable vi1 = smapper.pop(this);

  1120                     final Variable vi2 = smapper.pop(this);

  1122                     if (vi1.isCategory2()) {

  1123                         final Variable vo3 = smapper.pushT(vi1.getType());

  1124                         final Variable vo2 = smapper.pushT(vi2.getType());

  1125                         final Variable vo1 = smapper.pushT(vi1.getType());

  1127                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1128                              vo1, vi1, vo2, vi2, vo3, vo1);

  1129                     } else {

  1130                         final Variable vi3 = smapper.pop(this);

  1131                         final Variable vo5 = smapper.pushT(vi2.getType());

  1132                         final Variable vo4 = smapper.pushT(vi1.getType());

  1133                         final Variable vo3 = smapper.pushT(vi3.getType());

  1134                         final Variable vo2 = smapper.pushT(vi2.getType());

  1135                         final Variable vo1 = smapper.pushT(vi1.getType());

  1137                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1138                              vo1, vi1, vo2, vi2, vo3, vi3);

  1139                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1140                              vo4, vo1, vo5, vo2);

  1141                     }

  1142                     break;

  1143                 }

  1144                 case opc_dup_x2: {

  1145                     final Variable vi1 = smapper.pop(this);

  1146                     final Variable vi2 = smapper.pop(this);

  1148                     if (vi2.isCategory2()) {

  1149                         final Variable vo3 = smapper.pushT(vi1.getType());

  1150                         final Variable vo2 = smapper.pushT(vi2.getType());

  1151                         final Variable vo1 = smapper.pushT(vi1.getType());

  1153                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1154                              vo1, vi1, vo2, vi2, vo3, vo1);

  1155                     } else {

  1156                         final Variable vi3 = smapper.pop(this);

  1157                         final Variable vo4 = smapper.pushT(vi1.getType());

  1158                         final Variable vo3 = smapper.pushT(vi3.getType());

  1159                         final Variable vo2 = smapper.pushT(vi2.getType());

  1160                         final Variable vo1 = smapper.pushT(vi1.getType());

  1162                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1163                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1164                     }

  1165                     break;

  1166                 }

  1167                 case opc_dup2_x2: {

  1168                     final Variable vi1 = smapper.pop(this);

  1169                     final Variable vi2 = smapper.pop(this);

  1171                     if (vi1.isCategory2()) {

  1172                         if (vi2.isCategory2()) {

  1173                             final Variable vo3 = smapper.pushT(vi1.getType());

  1174                             final Variable vo2 = smapper.pushT(vi2.getType());

  1175                             final Variable vo1 = smapper.pushT(vi1.getType());

  1177                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1178                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1179                         } else {

  1180                             final Variable vi3 = smapper.pop(this);

  1181                             final Variable vo4 = smapper.pushT(vi1.getType());

  1182                             final Variable vo3 = smapper.pushT(vi3.getType());

  1183                             final Variable vo2 = smapper.pushT(vi2.getType());

  1184                             final Variable vo1 = smapper.pushT(vi1.getType());

  1186                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1187                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1188                         }

  1189                     } else {

  1190                         final Variable vi3 = smapper.pop(this);

  1192                         if (vi3.isCategory2()) {

  1193                             final Variable vo5 = smapper.pushT(vi2.getType());

  1194                             final Variable vo4 = smapper.pushT(vi1.getType());

  1195                             final Variable vo3 = smapper.pushT(vi3.getType());

  1196                             final Variable vo2 = smapper.pushT(vi2.getType());

  1197                             final Variable vo1 = smapper.pushT(vi1.getType());

  1199                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1200                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1201                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1202                                  vo4, vo1, vo5, vo2);

  1203                         } else {

  1204                             final Variable vi4 = smapper.pop(this);

  1205                             final Variable vo6 = smapper.pushT(vi2.getType());

  1206                             final Variable vo5 = smapper.pushT(vi1.getType());

  1207                             final Variable vo4 = smapper.pushT(vi4.getType());

  1208                             final Variable vo3 = smapper.pushT(vi3.getType());

  1209                             final Variable vo2 = smapper.pushT(vi2.getType());

  1210                             final Variable vo1 = smapper.pushT(vi1.getType());

  1212                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1213                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1214                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1215                                  vo5, vo1, vo6, vo2);

  1216                         }

  1217                     }

  1218                     break;

  1219                 }

  1220                 case opc_swap: {

  1221                     final Variable vi1 = smapper.get(0);

  1222                     final Variable vi2 = smapper.get(1);

  1224                     if (vi1.getType() == vi2.getType()) {

  1225                         final Variable tmp = smapper.pushT(vi1.getType());

  1227                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1228                              tmp, vi1, vi2);

  1229                         smapper.pop(1);

  1230                     } else {

  1231                         smapper.pop(2);

  1232                         smapper.pushT(vi1.getType());

  1233                         smapper.pushT(vi2.getType());

  1234                     }

  1235                     break;

  1236                 }

  1237                 case opc_bipush:

  1238                     smapper.assign(this, VarType.INTEGER,

  1239                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1240                     break;

  1241                 case opc_sipush:

  1242                     smapper.assign(this, VarType.INTEGER,

  1243                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1244                     );

  1245                     i += 2;

  1246                     break;

  1247                 case opc_getfield: {

  1248                     int indx = readUShortArg(byteCodes, i);

  1249                     String[] fi = jc.getFieldInfoName(indx);

  1250                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1251                     final String mangleClass = mangleClassName(fi[0]);

  1252                     final String mangleClassAccess = accessClass(mangleClass);

  1253                     smapper.replace(this, type, "@3(false)._@2.call(@1)",

  1254                          smapper.getA(0),

  1255                          fi[1], mangleClassAccess

  1256                     );

  1257                     i += 2;

  1258                     break;

  1259                 }

  1260                 case opc_putfield: {

  1261                     int indx = readUShortArg(byteCodes, i);

  1262                     String[] fi = jc.getFieldInfoName(indx);

  1263                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1264                     final String mangleClass = mangleClassName(fi[0]);

  1265                     final String mangleClassAccess = accessClass(mangleClass);

  1266                     emit(smapper, this, "@4(false)._@3.call(@2, @1);",

  1267                          smapper.popT(type),

  1268                          smapper.popA(), fi[1],

  1269                          mangleClassAccess

  1270                     );

  1271                     i += 2;

  1272                     break;

  1273                 }

  1274                 case opc_getstatic: {

  1275                     int indx = readUShortArg(byteCodes, i);

  1276                     String[] fi = jc.getFieldInfoName(indx);

  1277                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1278                     String ac = accessClass(mangleClassName(fi[0]));

  1279                     smapper.assign(this, type, ac + "(false)._" + fi[1] + "()");

  1280                     i += 2;

  1281                     addReference(fi[0]);

  1282                     break;

  1283                 }

  1284                 case opc_putstatic: {

  1285                     int indx = readUShortArg(byteCodes, i);

  1286                     String[] fi = jc.getFieldInfoName(indx);

  1287                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1288                     emit(smapper, this, "@1(false)._@2(@3);",

  1289                          accessClass(mangleClassName(fi[0])), fi[1],

  1290                          smapper.popT(type));

  1291                     i += 2;

  1292                     addReference(fi[0]);

  1293                     break;

  1294                 }

  1295                 case opc_checkcast: {

  1296                     int indx = readUShortArg(byteCodes, i);

  1297                     generateCheckcast(indx, smapper);

  1298                     i += 2;

  1299                     break;

  1300                 }

  1301                 case opc_instanceof: {

  1302                     int indx = readUShortArg(byteCodes, i);

  1303                     generateInstanceOf(indx, smapper);

  1304                     i += 2;

  1305                     break;

  1306                 }

  1307                 case opc_athrow: {

  1308                     final CharSequence v = smapper.popA();

  1309                     smapper.clear();

  1311                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1312                          smapper.pushA(), v);

  1313                     break;

  1314                 }

  1316                 case opc_monitorenter: {

  1317                     debug("/* monitor enter */");

  1318                     smapper.popA();

  1319                     break;

  1320                 }

  1322                 case opc_monitorexit: {

  1323                     debug("/* monitor exit */");

  1324                     smapper.popA();

  1325                     break;

  1326                 }

  1328                 case opc_wide:

  1329                     wide = true;

  1330                     break;

  1332                 default: {

  1333                     wide = false;

  1334                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1335                          Integer.toString(c));

  1336                 }

  1337             }

  1338             if (debug(" //")) {

  1339                 generateByteCodeComment(prev, i, byteCodes);

  1340             }

  1341             append("\n");

  1342         }

  1343         if (previousTrap != null) {

  1344             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1345         }

  1346         if (didBranches) {

  1347             append("\n    }\n");

  1348         }

  1349         while (openBraces-- > 0) {

  1350             append('}');

  1351         }

  1352         append("\n};");

  1353     }

  1355     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1356         int i, final CharSequence v2, final CharSequence v1,

  1357         final String test, int topMostLabel

  1358     ) throws IOException {

  1359         mapper.flush(this);

  1360         int indx = i + readShortArg(byteCodes, i);

  1361         append("if ((").append(v1)

  1362            .append(") ").append(test).append(" (")

  1363            .append(v2).append(")) ");

  1364         goTo(this, i, indx, topMostLabel);

  1365         return i + 2;

  1366     }

  1368     private int readInt4(byte[] byteCodes, int offset) {

  1369         final int d = byteCodes[offset + 0] << 24;

  1370         final int c = byteCodes[offset + 1] << 16;

  1371         final int b = byteCodes[offset + 2] << 8;

  1372         final int a = byteCodes[offset + 3];

  1373         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1374     }

  1375     private static int readUByte(byte[] byteCodes, int offset) {

  1376         return byteCodes[offset] & 0xff;

  1377     }

  1379     private static int readUShort(byte[] byteCodes, int offset) {

  1380         return ((byteCodes[offset] & 0xff) << 8)

  1381                     | (byteCodes[offset + 1] & 0xff);

  1382     }

  1383     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1384         return readUShort(byteCodes, offsetInstruction + 1);

  1385     }

  1387     private static int readShort(byte[] byteCodes, int offset) {

  1388         int signed = byteCodes[offset];

  1389         byte b0 = (byte)signed;

  1390         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1391     }

  1392     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1393         return readShort(byteCodes, offsetInstruction + 1);

  1394     }

  1396     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1397         int i = 0;

  1398         Boolean count = null;

  1399         boolean array = false;

  1400         sig.append("__");

  1401         int firstPos = sig.length();

  1402         while (i < descriptor.length()) {

  1403             char ch = descriptor.charAt(i++);

  1404             switch (ch) {

  1405                 case '(':

  1406                     count = true;

  1407                     continue;

  1408                 case ')':

  1409                     count = false;

  1410                     continue;

  1411                 case 'B':

  1412                 case 'C':

  1413                 case 'D':

  1414                 case 'F':

  1415                 case 'I':

  1416                 case 'J':

  1417                 case 'S':

  1418                 case 'Z':

  1419                     if (count) {

  1420                         if (array) {

  1421                             sig.append("_3");

  1422                         }

  1423                         sig.append(ch);

  1424                         if (ch == 'J' || ch == 'D') {

  1425                             cnt.append('1');

  1426                         } else {

  1427                             cnt.append('0');

  1428                         }

  1429                     } else {

  1430                         sig.insert(firstPos, ch);

  1431                         if (array) {

  1432                             returnType[0] = '[';

  1433                             sig.insert(firstPos, "_3");

  1434                         } else {

  1435                             returnType[0] = ch;

  1436                         }

  1437                     }

  1438                     array = false;

  1439                     continue;

  1440                 case 'V':

  1441                     assert !count;

  1442                     returnType[0] = 'V';

  1443                     sig.insert(firstPos, 'V');

  1444                     continue;

  1445                 case 'L':

  1446                     int next = descriptor.indexOf(';', i);

  1447                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1448                     if (count) {

  1449                         if (array) {

  1450                             sig.append("_3");

  1451                         }

  1452                         sig.append(realSig);

  1453                         cnt.append('0');

  1454                     } else {

  1455                         sig.insert(firstPos, realSig);

  1456                         if (array) {

  1457                             sig.insert(firstPos, "_3");

  1458                         }

  1459                         returnType[0] = 'L';

  1460                     }

  1461                     i = next + 1;

  1462                     array = false;

  1463                     continue;

  1464                 case '[':

  1465                     array = true;

  1466                     continue;

  1467                 default:

  1468                     throw new IllegalStateException("Invalid char: " + ch);

  1469             }

  1470         }

  1471     }

  1473     static String mangleSig(String sig) {

  1474         return mangleSig(sig, 0, sig.length());

  1475     }

  1477     private static String mangleMethodName(String name) {

  1478         StringBuilder sb = new StringBuilder(name.length() * 2);

  1479         int last = name.length();

  1480         for (int i = 0; i < last; i++) {

  1481             final char ch = name.charAt(i);

  1482             switch (ch) {

  1483                 case '_': sb.append("_1"); break;

  1484                 default: sb.append(ch); break;

  1485             }

  1486         }

  1487         return sb.toString();

  1488     }

  1489     private static String mangleSig(String txt, int first, int last) {

  1490         StringBuilder sb = new StringBuilder((last - first) * 2);

  1491         for (int i = first; i < last; i++) {

  1492             final char ch = txt.charAt(i);

  1493             switch (ch) {

  1494                 case '/': sb.append('_'); break;

  1495                 case '_': sb.append("_1"); break;

  1496                 case ';': sb.append("_2"); break;

  1497                 case '[': sb.append("_3"); break;

  1498                 default: sb.append(ch); break;

  1499             }

  1500         }

  1501         return sb.toString();

  1502     }

  1504     private static String mangleClassName(String name) {

  1505         return mangleSig(name);

  1506     }

  1508     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1509         StringBuilder name = new StringBuilder();

  1510         if ("<init>".equals(m.getName())) { // NOI18N

  1511             name.append("cons"); // NOI18N

  1512         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1513             name.append("class"); // NOI18N

  1514         } else {

  1515             name.append(mangleMethodName(m.getName()));

  1516         }

  1518         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1519         return name.toString();

  1520     }

  1522     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1523         StringBuilder name = new StringBuilder();

  1524         String descr = mi[2];//mi.getDescriptor();

  1525         String nm= mi[1];

  1526         if ("<init>".equals(nm)) { // NOI18N

  1527             name.append("cons"); // NOI18N

  1528         } else {

  1529             name.append(mangleMethodName(nm));

  1530         }

  1531         countArgs(descr, returnType, name, cnt);

  1532         return name.toString();

  1533     }

  1535     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1536     throws IOException {

  1537         int methodIndex = readUShortArg(byteCodes, i);

  1538         String[] mi = jc.getFieldInfoName(methodIndex);

  1539         char[] returnType = { 'V' };

  1540         StringBuilder cnt = new StringBuilder();

  1541         String mn = findMethodName(mi, cnt, returnType);

  1543         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1544         final CharSequence[] vars = new CharSequence[numArguments];

  1546         for (int j = numArguments - 1; j >= 0; --j) {

  1547             vars[j] = mapper.popValue();

  1548         }

  1550         if (returnType[0] != 'V') {

  1551             append("var ")

  1552                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1553                .append(" = ");

  1554         }

  1556         final String in = mi[0];

  1557         append(accessClass(mangleClassName(in)));

  1558         append("(false).");

  1559         if (mn.startsWith("cons_")) {

  1560             append("constructor.");

  1561         }

  1562         append(mn);

  1563         if (isStatic) {

  1564             append('(');

  1565         } else {

  1566             append(".call(");

  1567         }

  1568         if (numArguments > 0) {

  1569             append(vars[0]);

  1570             for (int j = 1; j < numArguments; ++j) {

  1571                 append(", ");

  1572                 append(vars[j]);

  1573             }

  1574         }

  1575         append(");");

  1576         i += 2;

  1577         addReference(in);

  1578         return i;

  1579     }

  1580     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1581     throws IOException {

  1582         int methodIndex = readUShortArg(byteCodes, i);

  1583         String[] mi = jc.getFieldInfoName(methodIndex);

  1584         char[] returnType = { 'V' };

  1585         StringBuilder cnt = new StringBuilder();

  1586         String mn = findMethodName(mi, cnt, returnType);

  1588         final int numArguments = cnt.length() + 1;

  1589         final CharSequence[] vars = new CharSequence[numArguments];

  1591         for (int j = numArguments - 1; j >= 0; --j) {

  1592             vars[j] = mapper.popValue();

  1593         }

  1595         if (returnType[0] != 'V') {

  1596             append("var ")

  1597                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1598                .append(" = ");

  1599         }

  1601         append(vars[0]).append('.');

  1602         append(mn);

  1603         append('(');

  1604         String sep = "";

  1605         for (int j = 1; j < numArguments; ++j) {

  1606             append(sep);

  1607             append(vars[j]);

  1608             sep = ", ";

  1609         }

  1610         append(");");

  1611         i += 2;

  1612         return i;

  1613     }

  1615     private void addReference(String cn) throws IOException {

  1616         if (requireReference(cn)) {

  1617             debug(" /* needs " + cn + " */");

  1618         }

  1619     }

  1621     private void outType(String d, StringBuilder out) {

  1622         int arr = 0;

  1623         while (d.charAt(0) == '[') {

  1624             out.append('A');

  1625             d = d.substring(1);

  1626         }

  1627         if (d.charAt(0) == 'L') {

  1628             assert d.charAt(d.length() - 1) == ';';

  1629             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1630         } else {

  1631             out.append(d);

  1632         }

  1633     }

  1635     private String encodeConstant(int entryIndex) throws IOException {

  1636         String[] classRef = { null };

  1637         String s = jc.stringValue(entryIndex, classRef);

  1638         if (classRef[0] != null) {

  1639             if (classRef[0].startsWith("[")) {

  1640                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "')";

  1641             } else {

  1642                 addReference(classRef[0]);

  1643                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1644             }

  1645         }

  1646         return s;

  1647     }

  1649     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1650         byte[] arr = m.findAnnotationData(true);

  1651         if (arr == null) {

  1652             return null;

  1653         }

  1654         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1655         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1656         class P extends AnnotationParser {

  1657             public P() {

  1658                 super(false, true);

  1659             }

  1661             int cnt;

  1662             String[] args = new String[30];

  1663             String body;

  1664             boolean javacall;

  1665             boolean html4j;

  1667             @Override

  1668             protected void visitAttr(String type, String attr, String at, String value) {

  1669                 if (type.equals(jvmType)) {

  1670                     if ("body".equals(attr)) {

  1671                         body = value;

  1672                     } else if ("args".equals(attr)) {

  1673                         args[cnt++] = value;

  1674                     } else {

  1675                         throw new IllegalArgumentException(attr);

  1676                     }

  1677                 }

  1678                 if (type.equals(htmlType)) {

  1679                     html4j = true;

  1680                     if ("body".equals(attr)) {

  1681                         body = value;

  1682                     } else if ("args".equals(attr)) {

  1683                         args[cnt++] = value;

  1684                     } else if ("javacall".equals(attr)) {

  1685                         javacall = "1".equals(value);

  1686                     } else {

  1687                         throw new IllegalArgumentException(attr);

  1688                     }

  1689                 }

  1690             }

  1691         }

  1692         P p = new P();

  1693         p.parse(arr, jc);

  1694         if (p.body == null) {

  1695             return null;

  1696         }

  1697         StringBuilder cnt = new StringBuilder();

  1698         final String mn = findMethodName(m, cnt);

  1699         append(destObject).append(".").append(mn);

  1700         append(" = function(");

  1701         String space = "";

  1702         int index = 0;

  1703         StringBuilder toValue = new StringBuilder();

  1704         for (int i = 0; i < cnt.length(); i++) {

  1705             append(space);

  1706             space = outputArg(this, p.args, index);

  1707             if (p.html4j && space.length() > 0) {

  1708                 toValue.append("\n  ").append(p.args[index]).append(" = vm.org_apidesign_bck2brwsr_emul_lang_System(false).toJS(").

  1709                     append(p.args[index]).append(");");

  1710             }

  1711             index++;

  1712         }

  1713         append(") {").append("\n");

  1714         append(toValue.toString());

  1715         if (p.javacall) {

  1716             int lastSlash = jc.getClassName().lastIndexOf('/');

  1717             final String pkg = jc.getClassName().substring(0, lastSlash);

  1718             append(mangleCallbacks(pkg, p.body));

  1719             requireReference(pkg + "/$JsCallbacks$");

  1720         } else {

  1721             append(p.body);

  1722         }

  1723         append("\n}\n");

  1724         return mn;

  1725     }

  1727     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1728         StringBuilder sb = new StringBuilder();

  1729         int pos = 0;

  1730         for (;;) {

  1731             int next = body.indexOf(".@", pos);

  1732             if (next == -1) {

  1733                 sb.append(body.substring(pos));

  1734                 body = sb.toString();

  1735                 break;

  1736             }

  1737             int ident = next;

  1738             while (ident > 0) {

  1739                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1740                     ident++;

  1741                     break;

  1742                 }

  1743             }

  1744             String refId = body.substring(ident, next);

  1746             sb.append(body.substring(pos, ident));

  1748             int sigBeg = body.indexOf('(', next);

  1749             int sigEnd = body.indexOf(')', sigBeg);

  1750             int colon4 = body.indexOf("::", next);

  1751             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1752                 throw new IllegalStateException("Malformed body " + body);

  1753             }

  1754             String fqn = body.substring(next + 2, colon4);

  1755             String method = body.substring(colon4 + 2, sigBeg);

  1756             String params = body.substring(sigBeg, sigEnd + 1);

  1758             int paramBeg = body.indexOf('(', sigEnd + 1);

  1760             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1761             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1762             sb.append("(").append(refId);

  1763             if (body.charAt(paramBeg + 1) != ')') {

  1764                 sb.append(",");

  1765             }

  1766             pos = paramBeg + 1;

  1767         }

  1768         sb = null;

  1769         pos = 0;

  1770         for (;;) {

  1771             int next = body.indexOf("@", pos);

  1772             if (next == -1) {

  1773                 if (sb == null) {

  1774                     return body;

  1775                 }

  1776                 sb.append(body.substring(pos));

  1777                 return sb;

  1778             }

  1779             if (sb == null) {

  1780                 sb = new StringBuilder();

  1781             }

  1783             sb.append(body.substring(pos, next));

  1785             int sigBeg = body.indexOf('(', next);

  1786             int sigEnd = body.indexOf(')', sigBeg);

  1787             int colon4 = body.indexOf("::", next);

  1788             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1789                 throw new IllegalStateException("Malformed body " + body);

  1790             }

  1791             String fqn = body.substring(next + 1, colon4);

  1792             String method = body.substring(colon4 + 2, sigBeg);

  1793             String params = body.substring(sigBeg, sigEnd + 1);

  1795             int paramBeg = body.indexOf('(', sigEnd + 1);

  1797             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1798             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1799             sb.append("(");

  1800             pos = paramBeg + 1;

  1801         }

  1802     }

  1804     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1805         if (params.startsWith("(")) {

  1806             params = params.substring(1);

  1807         }

  1808         if (params.endsWith(")")) {

  1809             params = params.substring(0, params.length() - 1);

  1810         }

  1811         StringBuilder sb = new StringBuilder();

  1812         final String fqnu = fqn.replace('.', '_');

  1813         final String rfqn = mangleClassName(fqnu);

  1814         final String rm = mangleMethodName(method);

  1815         final String srp;

  1816         {

  1817             StringBuilder pb = new StringBuilder();

  1818             int len = params.length();

  1819             int indx = 0;

  1820             while (indx < len) {

  1821                 char ch = params.charAt(indx);

  1822                 if (ch == '[' || ch == 'L') {

  1823                     pb.append("Ljava/lang/Object;");

  1824                     indx = params.indexOf(';', indx) + 1;

  1825                 } else {

  1826                     pb.append(ch);

  1827                     indx++;

  1828                 }

  1829             }

  1830             srp = mangleSig(pb.toString());

  1831         }

  1832         final String rp = mangleSig(params);

  1833         final String mrp = mangleMethodName(rp);

  1834         sb.append(rfqn).append("$").append(rm).

  1835             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1836         if (!isStatic) {

  1837             sb.append('L').append(fqnu).append("_2");

  1838         }

  1839         sb.append(srp);

  1840         return sb.toString();

  1841     }

  1843     private static String className(ClassData jc) {

  1844         //return jc.getName().getInternalName().replace('/', '_');

  1845         return mangleClassName(jc.getClassName());

  1846     }

  1848     private static String[] findAnnotation(

  1849         byte[] arr, ClassData cd, final String className,

  1850         final String... attrNames

  1851     ) throws IOException {

  1852         if (arr == null) {

  1853             return null;

  1854         }

  1855         final String[] values = new String[attrNames.length];

  1856         final boolean[] found = { false };

  1857         final String jvmType = "L" + className.replace('.', '/') + ";";

  1858         AnnotationParser ap = new AnnotationParser(false, true) {

  1859             @Override

  1860             protected void visitAttr(String type, String attr, String at, String value) {

  1861                 if (type.equals(jvmType)) {

  1862                     found[0] = true;

  1863                     for (int i = 0; i < attrNames.length; i++) {

  1864                         if (attrNames[i].equals(attr)) {

  1865                             values[i] = value;

  1866                         }

  1867                     }

  1868                 }

  1869             }

  1871         };

  1872         ap.parse(arr, cd);

  1873         return found[0] ? values : null;

  1874     }

  1876     private CharSequence initField(FieldData v) {

  1877         final String is = v.getInternalSig();

  1878         if (is.length() == 1) {

  1879             switch (is.charAt(0)) {

  1880                 case 'S':

  1881                 case 'J':

  1882                 case 'B':

  1883                 case 'Z':

  1884                 case 'C':

  1885                 case 'I': return " = 0;";

  1886                 case 'F':

  1887                 case 'D': return " = 0.0;";

  1888                 default:

  1889                     throw new IllegalStateException(is);

  1890             }

  1891         }

  1892         return " = null;";

  1893     }

  1895     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  1896         AnnotationParser ap = new AnnotationParser(true, false) {

  1897             int[] cnt = new int[32];

  1898             int depth;

  1900             @Override

  1901             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1902                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1903                 requireReference(slashType);

  1905                 if (cnt[depth]++ > 0) {

  1906                     append(",");

  1907                 }

  1908                 if (top) {

  1909                     append('"').append(attrType).append("\" : ");

  1910                 }

  1911                 append("{\n");

  1912                 cnt[++depth] = 0;

  1913             }

  1915             @Override

  1916             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

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

  1918                 depth--;

  1919             }

  1921             @Override

  1922             protected void visitValueStart(String attrName, char type) throws IOException {

  1923                 if (cnt[depth]++ > 0) {

  1924                     append(",\n");

  1925                 }

  1926                 cnt[++depth] = 0;

  1927                 if (attrName != null) {

  1928                     append(attrName).append(" : ");

  1929                 }

  1930                 if (type == '[') {

  1931                     append("[");

  1932                 }

  1933             }

  1935             @Override

  1936             protected void visitValueEnd(String attrName, char type) throws IOException {

  1937                 if (type == '[') {

  1938                     append("]");

  1939                 }

  1940                 depth--;

  1941             }

  1943             @Override

  1944             protected void visitAttr(String type, String attr, String attrType, String value)

  1945             throws IOException {

  1946                 if (attr == null && value == null) {

  1947                     return;

  1948                 }

  1949                 append(value);

  1950             }

  1952             @Override

  1953             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1954             throws IOException {

  1955                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1956                 requireReference(slashType);

  1958                 append(accessClass(mangleClassName(slashType)))

  1959                    .append("(false).constructor.fld_").append(value);

  1960             }

  1961         };

  1962         ap.parse(data, cd);

  1963     }

  1965     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1966         final String name = args[indx];

  1967         if (name == null) {

  1968             return "";

  1969         }

  1970         if (name.contains(",")) {

  1971             throw new IOException("Wrong parameter with ',': " + name);

  1972         }

  1973         out.append(name);

  1974         return ",";

  1975     }

  1977     final void emitNoFlush(

  1978         StackMapper sm,

  1979         final String format, final CharSequence... params

  1980     ) throws IOException {

  1981         emitImpl(this, format, params);

  1982     }

  1983     static final void emit(

  1984         StackMapper sm,

  1985         final Appendable out,

  1986         final String format, final CharSequence... params

  1987     ) throws IOException {

  1988         sm.flush(out);

  1989         emitImpl(out, format, params);

  1990     }

  1991     static void emitImpl(final Appendable out,

  1992                              final String format,

  1993                              final CharSequence... params) throws IOException {

  1994         final int length = format.length();

  1996         int processed = 0;

  1997         int paramOffset = format.indexOf('@');

  1998         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1999             final char paramChar = format.charAt(paramOffset + 1);

  2000             if ((paramChar >= '1') && (paramChar <= '9')) {

  2001                 final int paramIndex = paramChar - '0' - 1;

  2003                 out.append(format, processed, paramOffset);

  2004                 out.append(params[paramIndex]);

  2006                 ++paramOffset;

  2007                 processed = paramOffset + 1;

  2008             }

  2010             paramOffset = format.indexOf('@', paramOffset + 1);

  2011         }

  2013         out.append(format, processed, length);

  2014     }

  2016     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2017         append("} catch (e) {\n");

  2018         int finallyPC = -1;

  2019         for (TrapData e : traps) {

  2020             if (e == null) {

  2021                 break;

  2022             }

  2023             if (e.catch_cpx != 0) { //not finally

  2024                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2025                 addReference(classInternalName);

  2026                 append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  2027                 append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  2028                 append("var stA0 = e;");

  2029                 goTo(this, current, e.handler_pc, topMostLabel);

  2030                 append("}\n");

  2031             } else {

  2032                 finallyPC = e.handler_pc;

  2033             }

  2034         }

  2035         if (finallyPC == -1) {

  2036             append("throw e;");

  2037         } else {

  2038             append("var stA0 = e;");

  2039             goTo(this, current, finallyPC, topMostLabel);

  2040         }

  2041         append("\n}");

  2042     }

  2044     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2045         if (to < current) {

  2046             if (canBack < to) {

  2047                 out.append("{ gt = 0; continue X_" + to + "; }");

  2048             } else {

  2049                 out.append("{ gt = " + to + "; continue X_0; }");

  2050             }

  2051         } else {

  2052             out.append("{ gt = " + to + "; break IF; }");

  2053         }

  2054     }

  2056     private static void emitIf(

  2057         StackMapper sm,

  2058         Appendable out, String pattern,

  2059         CharSequence param,

  2060         int current, int to, int canBack

  2061     ) throws IOException {

  2062         sm.flush(out);

  2063         emitImpl(out, pattern, param);

  2064         goTo(out, current, to, canBack);

  2065     }

  2067     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2068         String jvmType;

  2069         switch (atype) {

  2070             case 4: jvmType = "[Z"; break;

  2071             case 5: jvmType = "[C"; break;

  2072             case 6: jvmType = "[F"; break;

  2073             case 7: jvmType = "[D"; break;

  2074             case 8: jvmType = "[B"; break;

  2075             case 9: jvmType = "[S"; break;

  2076             case 10: jvmType = "[I"; break;

  2077             case 11: jvmType = "[J"; break;

  2078             default: throw new IllegalStateException("Array type: " + atype);

  2079         }

  2080         emit(smapper, this, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  2081              smapper.popI(), smapper.pushA(), jvmType);

  2082     }

  2084     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2085         String typeName = jc.getClassName(type);

  2086         if (typeName.startsWith("[")) {

  2087             typeName = "[" + typeName;

  2088         } else {

  2089             typeName = "[L" + typeName + ";";

  2090         }

  2091         emit(smapper, this, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  2092              smapper.popI(), smapper.pushA(), typeName);

  2093     }

  2095     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2096         String typeName = jc.getClassName(type);

  2097         int dim = readUByte(byteCodes, ++i);

  2098         StringBuilder dims = new StringBuilder();

  2099         dims.append('[');

  2100         for (int d = 0; d < dim; d++) {

  2101             if (d != 0) {

  2102                 dims.insert(1, ",");

  2103             }

  2104             dims.insert(1, smapper.popI());

  2105         }

  2106         dims.append(']');

  2107         emit(smapper, this, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  2108              dims.toString(), smapper.pushA(), typeName);

  2109         return i;

  2110     }

  2112     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2113         int table = i / 4 * 4 + 4;

  2114         int dflt = i + readInt4(byteCodes, table);

  2115         table += 4;

  2116         int low = readInt4(byteCodes, table);

  2117         table += 4;

  2118         int high = readInt4(byteCodes, table);

  2119         table += 4;

  2120         final CharSequence swVar = smapper.popValue();

  2121         smapper.flush(this);

  2122         append("switch (").append(swVar).append(") {\n");

  2123         while (low <= high) {

  2124             int offset = i + readInt4(byteCodes, table);

  2125             table += 4;

  2126             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2127             low++;

  2128         }

  2129         append("  default: ");

  2130         goTo(this, i, dflt, topMostLabel);

  2131         append("\n}");

  2132         i = table - 1;

  2133         return i;

  2134     }

  2136     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2137         int table = i / 4 * 4 + 4;

  2138         int dflt = i + readInt4(byteCodes, table);

  2139         table += 4;

  2140         int n = readInt4(byteCodes, table);

  2141         table += 4;

  2142         final CharSequence swVar = smapper.popValue();

  2143         smapper.flush(this);

  2144         append("switch (").append(swVar).append(") {\n");

  2145         while (n-- > 0) {

  2146             int cnstnt = readInt4(byteCodes, table);

  2147             table += 4;

  2148             int offset = i + readInt4(byteCodes, table);

  2149             table += 4;

  2150             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2151         }

  2152         append("  default: ");

  2153         goTo(this, i, dflt, topMostLabel);

  2154         append("\n}");

  2155         i = table - 1;

  2156         return i;

  2157     }

  2159     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2160         final String type = jc.getClassName(indx);

  2161         if (!type.startsWith("[")) {

  2162             emit(smapper, this, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  2163                  smapper.popA(), smapper.pushI(),

  2164                  type.replace('/', '_'));

  2165         } else {

  2166             emit(smapper, this, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  2167                 smapper.popA(), smapper.pushI(),

  2168                 type

  2169             );

  2170         }

  2171     }

  2173     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2174         final String type = jc.getClassName(indx);

  2175         if (!type.startsWith("[")) {

  2176             emitNoFlush(smapper,

  2177                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  2178                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2179         } else {

  2180             emitNoFlush(smapper, "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@2').cast__Ljava_lang_Object_2Ljava_lang_Object_2(@1);",

  2181                  smapper.getT(0, VarType.REFERENCE, false), type

  2182             );

  2183         }

  2184     }

  2186     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2187         for (int j = prev; j <= i; j++) {

  2188             append(" ");

  2189             final int cc = readUByte(byteCodes, j);

  2190             append(Integer.toString(cc));

  2191         }

  2192     }

  2193 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Tue, 29 Apr 2014 16:22:23 +0200
changeset 1509	16f50abb439b
parent 1477	b012365f8fb7
child 1510	b242abb07fbf
permissions	-rw-r--r--