hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@b242abb07fbf

     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             outChanged = false;

   370             stackMapIterator.advanceTo(i);

   371             boolean changeInCatch = trap.advanceTo(i);

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

   373                 if (previousTrap != null) {

   374                     generateCatch(previousTrap, i, topMostLabel);

   375                     previousTrap = null;

   376                 }

   377             }

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

   379                 smapper.flush(this);

   380                 if (i != 0) {

   381                     append("    }\n");

   382                 }

   383                 if (openBraces > 64) {

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

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

   386                     }

   387                     openBraces = 1;

   388                     topMostLabel = i;

   389                 }

   391                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   395                 openBraces++;

   396                 changeInCatch = true;

   397             } else {

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

   399             }

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

   401                 append("try {");

   402                 previousTrap = trap.current();

   403             }

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

   405             switch (c) {

   406                 case opc_aload_0:

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

   408                     break;

   409                 case opc_iload_0:

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

   411                     break;

   412                 case opc_lload_0:

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

   414                     break;

   415                 case opc_fload_0:

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

   417                     break;

   418                 case opc_dload_0:

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

   420                     break;

   421                 case opc_aload_1:

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

   423                     break;

   424                 case opc_iload_1:

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

   426                     break;

   427                 case opc_lload_1:

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

   429                     break;

   430                 case opc_fload_1:

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

   432                     break;

   433                 case opc_dload_1:

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

   435                     break;

   436                 case opc_aload_2:

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

   438                     break;

   439                 case opc_iload_2:

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

   441                     break;

   442                 case opc_lload_2:

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

   444                     break;

   445                 case opc_fload_2:

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

   447                     break;

   448                 case opc_dload_2:

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

   450                     break;

   451                 case opc_aload_3:

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

   453                     break;

   454                 case opc_iload_3:

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

   456                     break;

   457                 case opc_lload_3:

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

   459                     break;

   460                 case opc_fload_3:

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

   462                     break;

   463                 case opc_dload_3:

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

   465                     break;

   466                 case opc_iload: {

   467                     ++i;

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

   469                                           : readUByte(byteCodes, i);

   470                     wide = false;

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

   472                     break;

   473                 }

   474                 case opc_lload: {

   475                     ++i;

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

   477                                           : readUByte(byteCodes, i);

   478                     wide = false;

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

   480                     break;

   481                 }

   482                 case opc_fload: {

   483                     ++i;

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

   485                                           : readUByte(byteCodes, i);

   486                     wide = false;

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

   488                     break;

   489                 }

   490                 case opc_dload: {

   491                     ++i;

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

   493                                           : readUByte(byteCodes, i);

   494                     wide = false;

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

   496                     break;

   497                 }

   498                 case opc_aload: {

   499                     ++i;

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

   501                                           : readUByte(byteCodes, i);

   502                     wide = false;

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

   504                     break;

   505                 }

   506                 case opc_istore: {

   507                     ++i;

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

   509                                           : readUByte(byteCodes, i);

   510                     wide = false;

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

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

   513                     break;

   514                 }

   515                 case opc_lstore: {

   516                     ++i;

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

   518                                           : readUByte(byteCodes, i);

   519                     wide = false;

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

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

   522                     break;

   523                 }

   524                 case opc_fstore: {

   525                     ++i;

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

   527                                           : readUByte(byteCodes, i);

   528                     wide = false;

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

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

   531                     break;

   532                 }

   533                 case opc_dstore: {

   534                     ++i;

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

   536                                           : readUByte(byteCodes, i);

   537                     wide = false;

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

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

   540                     break;

   541                 }

   542                 case opc_astore: {

   543                     ++i;

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

   545                                           : readUByte(byteCodes, i);

   546                     wide = false;

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

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

   549                     break;

   550                 }

   551                 case opc_astore_0:

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

   553                     break;

   554                 case opc_istore_0:

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

   556                     break;

   557                 case opc_lstore_0:

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

   559                     break;

   560                 case opc_fstore_0:

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

   562                     break;

   563                 case opc_dstore_0:

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

   565                     break;

   566                 case opc_astore_1:

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

   568                     break;

   569                 case opc_istore_1:

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

   571                     break;

   572                 case opc_lstore_1:

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

   574                     break;

   575                 case opc_fstore_1:

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

   577                     break;

   578                 case opc_dstore_1:

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

   580                     break;

   581                 case opc_astore_2:

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

   583                     break;

   584                 case opc_istore_2:

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

   586                     break;

   587                 case opc_lstore_2:

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

   589                     break;

   590                 case opc_fstore_2:

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

   592                     break;

   593                 case opc_dstore_2:

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

   595                     break;

   596                 case opc_astore_3:

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

   598                     break;

   599                 case opc_istore_3:

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

   601                     break;

   602                 case opc_lstore_3:

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

   604                     break;

   605                 case opc_fstore_3:

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

   607                     break;

   608                 case opc_dstore_3:

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

   610                     break;

   611                 case opc_iadd:

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

   613                     break;

   614                 case opc_ladd:

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

   616                     break;

   617                 case opc_fadd:

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

   619                     break;

   620                 case opc_dadd:

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

   622                     break;

   623                 case opc_isub:

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

   625                     break;

   626                 case opc_lsub:

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

   628                     break;

   629                 case opc_fsub:

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

   631                     break;

   632                 case opc_dsub:

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

   634                     break;

   635                 case opc_imul:

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

   637                     break;

   638                 case opc_lmul:

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

   640                     break;

   641                 case opc_fmul:

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

   643                     break;

   644                 case opc_dmul:

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

   646                     break;

   647                 case opc_idiv:

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

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

   650                     break;

   651                 case opc_ldiv:

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

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

   654                     break;

   655                 case opc_fdiv:

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

   657                     break;

   658                 case opc_ddiv:

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

   660                     break;

   661                 case opc_irem:

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

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

   664                     break;

   665                 case opc_lrem:

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

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

   668                     break;

   669                 case opc_frem:

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

   671                     break;

   672                 case opc_drem:

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

   674                     break;

   675                 case opc_iand:

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

   677                     break;

   678                 case opc_land:

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

   680                     break;

   681                 case opc_ior:

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

   683                     break;

   684                 case opc_lor:

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

   686                     break;

   687                 case opc_ixor:

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

   689                     break;

   690                 case opc_lxor:

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

   692                     break;

   693                 case opc_ineg:

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

   695                     break;

   696                 case opc_lneg:

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

   698                     break;

   699                 case opc_fneg:

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

   701                     break;

   702                 case opc_dneg:

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

   704                     break;

   705                 case opc_ishl:

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

   707                     break;

   708                 case opc_lshl:

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

   710                     break;

   711                 case opc_ishr:

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

   713                     break;

   714                 case opc_lshr:

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

   716                     break;

   717                 case opc_iushr:

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

   719                     break;

   720                 case opc_lushr:

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

   722                     break;

   723                 case opc_iinc: {

   724                     ++i;

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

   726                                              : readUByte(byteCodes, i);

   727                     ++i;

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

   729                                             : byteCodes[i];

   730                     wide = false;

   731                     if (incrBy == 1) {

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

   733                     } else {

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

   735                              lmapper.getI(varIndx),

   736                              Integer.toString(incrBy));

   737                     }

   738                     break;

   739                 }

   740                 case opc_return:

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

   742                     break;

   743                 case opc_ireturn:

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

   745                     break;

   746                 case opc_lreturn:

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

   748                     break;

   749                 case opc_freturn:

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

   751                     break;

   752                 case opc_dreturn:

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

   754                     break;

   755                 case opc_areturn:

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

   757                     break;

   758                 case opc_i2l:

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

   760                     break;

   761                 case opc_i2f:

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

   763                     break;

   764                 case opc_i2d:

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

   766                     break;

   767                 case opc_l2i:

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

   769                     break;

   770                     // max int check?

   771                 case opc_l2f:

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

   773                     break;

   774                 case opc_l2d:

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

   776                     break;

   777                 case opc_f2d:

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

   779                          smapper.getF(0));

   780                     break;

   781                 case opc_d2f:

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

   783                          smapper.getD(0));

   784                     break;

   785                 case opc_f2i:

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

   787                          smapper.getF(0));

   788                     break;

   789                 case opc_f2l:

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

   791                          smapper.getF(0));

   792                     break;

   793                 case opc_d2i:

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

   795                          smapper.getD(0));

   796                     break;

   797                 case opc_d2l:

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

   799                     break;

   800                 case opc_i2b:

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

   802                     break;

   803                 case opc_i2c:

   804                     break;

   805                 case opc_i2s:

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

   807                     break;

   808                 case opc_aconst_null:

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

   810                     break;

   811                 case opc_iconst_m1:

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

   813                     break;

   814                 case opc_iconst_0:

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

   816                     break;

   817                 case opc_dconst_0:

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

   819                     break;

   820                 case opc_lconst_0:

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

   822                     break;

   823                 case opc_fconst_0:

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

   825                     break;

   826                 case opc_iconst_1:

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

   828                     break;

   829                 case opc_lconst_1:

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

   831                     break;

   832                 case opc_fconst_1:

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

   834                     break;

   835                 case opc_dconst_1:

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

   837                     break;

   838                 case opc_iconst_2:

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

   840                     break;

   841                 case opc_fconst_2:

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

   843                     break;

   844                 case opc_iconst_3:

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

   846                     break;

   847                 case opc_iconst_4:

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

   849                     break;

   850                 case opc_iconst_5:

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

   852                     break;

   853                 case opc_ldc: {

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

   855                     String v = encodeConstant(indx);

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

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

   858                     break;

   859                 }

   860                 case opc_ldc_w:

   861                 case opc_ldc2_w: {

   862                     int indx = readUShortArg(byteCodes, i);

   863                     i += 2;

   864                     String v = encodeConstant(indx);

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

   866                     if (type == VarType.LONG) {

   867                         final Long lv = new Long(v);

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

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

   870                         if (hi == 0) {

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

   872                         } else {

   873                             smapper.assign(this, VarType.LONG,

   874                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   875                                     Integer.toHexString(low) + ")"

   876                             );

   877                         }

   878                     } else {

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

   880                     }

   881                     break;

   882                 }

   883                 case opc_lcmp:

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

   885                     break;

   886                 case opc_fcmpl:

   887                 case opc_fcmpg:

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

   889                     break;

   890                 case opc_dcmpl:

   891                 case opc_dcmpg:

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

   893                     break;

   894                 case opc_if_acmpeq:

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

   896                                    "===", topMostLabel);

   897                     break;

   898                 case opc_if_acmpne:

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

   900                                    "!==", topMostLabel);

   901                     break;

   902                 case opc_if_icmpeq:

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

   904                                    "==", topMostLabel);

   905                     break;

   906                 case opc_ifeq: {

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

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

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

   910                     i += 2;

   911                     break;

   912                 }

   913                 case opc_ifne: {

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

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

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

   917                     i += 2;

   918                     break;

   919                 }

   920                 case opc_iflt: {

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

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

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

   924                     i += 2;

   925                     break;

   926                 }

   927                 case opc_ifle: {

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

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

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

   931                     i += 2;

   932                     break;

   933                 }

   934                 case opc_ifgt: {

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

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

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

   938                     i += 2;

   939                     break;

   940                 }

   941                 case opc_ifge: {

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

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

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

   945                     i += 2;

   946                     break;

   947                 }

   948                 case opc_ifnonnull: {

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

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

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

   952                     i += 2;

   953                     break;

   954                 }

   955                 case opc_ifnull: {

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

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

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

   959                     i += 2;

   960                     break;

   961                 }

   962                 case opc_if_icmpne:

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

   964                                    "!=", topMostLabel);

   965                     break;

   966                 case opc_if_icmplt:

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

   968                                    "<", topMostLabel);

   969                     break;

   970                 case opc_if_icmple:

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

   972                                    "<=", topMostLabel);

   973                     break;

   974                 case opc_if_icmpgt:

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

   976                                    ">", topMostLabel);

   977                     break;

   978                 case opc_if_icmpge:

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

   980                                    ">=", topMostLabel);

   981                     break;

   982                 case opc_goto: {

   983                     smapper.flush(this);

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

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

   986                     i += 2;

   987                     break;

   988                 }

   989                 case opc_lookupswitch: {

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

   991                     break;

   992                 }

   993                 case opc_tableswitch: {

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

   995                     break;

   996                 }

   997                 case opc_invokeinterface: {

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

   999                     break;

  1000                 }

  1001                 case opc_invokevirtual:

  1002                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1003                     break;

  1004                 case opc_invokespecial:

  1005                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1006                     break;

  1007                 case opc_invokestatic:

  1008                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1009                     break;

  1010                 case opc_new: {

  1011                     int indx = readUShortArg(byteCodes, i);

  1012                     String ci = jc.getClassName(indx);

  1013                     emit(smapper, this, "var @1 = new @2;",

  1014                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1015                     addReference(ci);

  1016                     i += 2;

  1017                     break;

  1018                 }

  1019                 case opc_newarray:

  1020                     int atype = readUByte(byteCodes, ++i);

  1021                     generateNewArray(atype, smapper);

  1022                     break;

  1023                 case opc_anewarray: {

  1024                     int type = readUShortArg(byteCodes, i);

  1025                     i += 2;

  1026                     generateANewArray(type, smapper);

  1027                     break;

  1028                 }

  1029                 case opc_multianewarray: {

  1030                     int type = readUShortArg(byteCodes, i);

  1031                     i += 2;

  1032                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1033                     break;

  1034                 }

  1035                 case opc_arraylength:

  1036                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1037                     break;

  1038                 case opc_lastore:

  1039                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1040                          smapper.popL(), smapper.popI(), smapper.popA());

  1041                     break;

  1042                 case opc_fastore:

  1043                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1044                          smapper.popF(), smapper.popI(), smapper.popA());

  1045                     break;

  1046                 case opc_dastore:

  1047                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1048                          smapper.popD(), smapper.popI(), smapper.popA());

  1049                     break;

  1050                 case opc_aastore:

  1051                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1052                          smapper.popA(), smapper.popI(), smapper.popA());

  1053                     break;

  1054                 case opc_iastore:

  1055                 case opc_bastore:

  1056                 case opc_castore:

  1057                 case opc_sastore:

  1058                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1059                          smapper.popI(), smapper.popI(), smapper.popA());

  1060                     break;

  1061                 case opc_laload:

  1062                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1063                          smapper.popI(), smapper.getA(0));

  1064                     break;

  1065                 case opc_faload:

  1066                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1067                          smapper.popI(), smapper.getA(0));

  1068                     break;

  1069                 case opc_daload:

  1070                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1071                          smapper.popI(), smapper.getA(0));

  1072                     break;

  1073                 case opc_aaload:

  1074                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1075                          smapper.popI(), smapper.getA(0));

  1076                     break;

  1077                 case opc_iaload:

  1078                 case opc_baload:

  1079                 case opc_caload:

  1080                 case opc_saload:

  1081                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1082                          smapper.popI(), smapper.getA(0));

  1083                     break;

  1084                 case opc_pop:

  1085                 case opc_pop2:

  1086                     smapper.pop(1);

  1087                     debug("/* pop */");

  1088                     break;

  1089                 case opc_dup: {

  1090                     final Variable v = smapper.get(0);

  1091                     emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1092                     break;

  1093                 }

  1094                 case opc_dup2: {

  1095                     final Variable vi1 = smapper.get(0);

  1097                     if (vi1.isCategory2()) {

  1098                         emit(smapper, this, "var @1 = @2;",

  1099                              smapper.pushT(vi1.getType()), vi1);

  1100                     } else {

  1101                         final Variable vi2 = smapper.get(1);

  1102                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1103                              smapper.pushT(vi2.getType()), vi2,

  1104                              smapper.pushT(vi1.getType()), vi1);

  1105                     }

  1106                     break;

  1107                 }

  1108                 case opc_dup_x1: {

  1109                     final Variable vi1 = smapper.pop(this);

  1110                     final Variable vi2 = smapper.pop(this);

  1111                     final Variable vo3 = smapper.pushT(vi1.getType());

  1112                     final Variable vo2 = smapper.pushT(vi2.getType());

  1113                     final Variable vo1 = smapper.pushT(vi1.getType());

  1115                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1116                          vo1, vi1, vo2, vi2, vo3, vo1);

  1117                     break;

  1118                 }

  1119                 case opc_dup2_x1: {

  1120                     final Variable vi1 = smapper.pop(this);

  1121                     final Variable vi2 = smapper.pop(this);

  1123                     if (vi1.isCategory2()) {

  1124                         final Variable vo3 = smapper.pushT(vi1.getType());

  1125                         final Variable vo2 = smapper.pushT(vi2.getType());

  1126                         final Variable vo1 = smapper.pushT(vi1.getType());

  1128                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1129                              vo1, vi1, vo2, vi2, vo3, vo1);

  1130                     } else {

  1131                         final Variable vi3 = smapper.pop(this);

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

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

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

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

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

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

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

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

  1141                              vo4, vo1, vo5, vo2);

  1142                     }

  1143                     break;

  1144                 }

  1145                 case opc_dup_x2: {

  1146                     final Variable vi1 = smapper.pop(this);

  1147                     final Variable vi2 = smapper.pop(this);

  1149                     if (vi2.isCategory2()) {

  1150                         final Variable vo3 = smapper.pushT(vi1.getType());

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

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

  1154                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

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

  1156                     } else {

  1157                         final Variable vi3 = smapper.pop(this);

  1158                         final Variable vo4 = smapper.pushT(vi1.getType());

  1159                         final Variable vo3 = smapper.pushT(vi3.getType());

  1160                         final Variable vo2 = smapper.pushT(vi2.getType());

  1161                         final Variable vo1 = smapper.pushT(vi1.getType());

  1163                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1164                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1165                     }

  1166                     break;

  1167                 }

  1168                 case opc_dup2_x2: {

  1169                     final Variable vi1 = smapper.pop(this);

  1170                     final Variable vi2 = smapper.pop(this);

  1172                     if (vi1.isCategory2()) {

  1173                         if (vi2.isCategory2()) {

  1174                             final Variable vo3 = smapper.pushT(vi1.getType());

  1175                             final Variable vo2 = smapper.pushT(vi2.getType());

  1176                             final Variable vo1 = smapper.pushT(vi1.getType());

  1178                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1179                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1180                         } else {

  1181                             final Variable vi3 = smapper.pop(this);

  1182                             final Variable vo4 = smapper.pushT(vi1.getType());

  1183                             final Variable vo3 = smapper.pushT(vi3.getType());

  1184                             final Variable vo2 = smapper.pushT(vi2.getType());

  1185                             final Variable vo1 = smapper.pushT(vi1.getType());

  1187                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1188                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1189                         }

  1190                     } else {

  1191                         final Variable vi3 = smapper.pop(this);

  1193                         if (vi3.isCategory2()) {

  1194                             final Variable vo5 = smapper.pushT(vi2.getType());

  1195                             final Variable vo4 = smapper.pushT(vi1.getType());

  1196                             final Variable vo3 = smapper.pushT(vi3.getType());

  1197                             final Variable vo2 = smapper.pushT(vi2.getType());

  1198                             final Variable vo1 = smapper.pushT(vi1.getType());

  1200                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1201                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1202                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1203                                  vo4, vo1, vo5, vo2);

  1204                         } else {

  1205                             final Variable vi4 = smapper.pop(this);

  1206                             final Variable vo6 = smapper.pushT(vi2.getType());

  1207                             final Variable vo5 = smapper.pushT(vi1.getType());

  1208                             final Variable vo4 = smapper.pushT(vi4.getType());

  1209                             final Variable vo3 = smapper.pushT(vi3.getType());

  1210                             final Variable vo2 = smapper.pushT(vi2.getType());

  1211                             final Variable vo1 = smapper.pushT(vi1.getType());

  1213                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1214                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1215                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1216                                  vo5, vo1, vo6, vo2);

  1217                         }

  1218                     }

  1219                     break;

  1220                 }

  1221                 case opc_swap: {

  1222                     final Variable vi1 = smapper.get(0);

  1223                     final Variable vi2 = smapper.get(1);

  1225                     if (vi1.getType() == vi2.getType()) {

  1226                         final Variable tmp = smapper.pushT(vi1.getType());

  1228                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1229                              tmp, vi1, vi2);

  1230                         smapper.pop(1);

  1231                     } else {

  1232                         smapper.pop(2);

  1233                         smapper.pushT(vi1.getType());

  1234                         smapper.pushT(vi2.getType());

  1235                     }

  1236                     break;

  1237                 }

  1238                 case opc_bipush:

  1239                     smapper.assign(this, VarType.INTEGER,

  1240                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1241                     break;

  1242                 case opc_sipush:

  1243                     smapper.assign(this, VarType.INTEGER,

  1244                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1245                     );

  1246                     i += 2;

  1247                     break;

  1248                 case opc_getfield: {

  1249                     int indx = readUShortArg(byteCodes, i);

  1250                     String[] fi = jc.getFieldInfoName(indx);

  1251                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1252                     final String mangleClass = mangleClassName(fi[0]);

  1253                     final String mangleClassAccess = accessClass(mangleClass);

  1254                     smapper.replace(this, type, "@3(false)._@2.call(@1)",

  1255                          smapper.getA(0),

  1256                          fi[1], mangleClassAccess

  1257                     );

  1258                     i += 2;

  1259                     break;

  1260                 }

  1261                 case opc_putfield: {

  1262                     int indx = readUShortArg(byteCodes, i);

  1263                     String[] fi = jc.getFieldInfoName(indx);

  1264                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1265                     final String mangleClass = mangleClassName(fi[0]);

  1266                     final String mangleClassAccess = accessClass(mangleClass);

  1267                     emit(smapper, this, "@4(false)._@3.call(@2, @1);",

  1268                          smapper.popT(type),

  1269                          smapper.popA(), fi[1],

  1270                          mangleClassAccess

  1271                     );

  1272                     i += 2;

  1273                     break;

  1274                 }

  1275                 case opc_getstatic: {

  1276                     int indx = readUShortArg(byteCodes, i);

  1277                     String[] fi = jc.getFieldInfoName(indx);

  1278                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1279                     String ac = accessClass(mangleClassName(fi[0]));

  1280                     smapper.assign(this, type, ac + "(false)._" + fi[1] + "()");

  1281                     i += 2;

  1282                     addReference(fi[0]);

  1283                     break;

  1284                 }

  1285                 case opc_putstatic: {

  1286                     int indx = readUShortArg(byteCodes, i);

  1287                     String[] fi = jc.getFieldInfoName(indx);

  1288                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1289                     emit(smapper, this, "@1(false)._@2(@3);",

  1290                          accessClass(mangleClassName(fi[0])), fi[1],

  1291                          smapper.popT(type));

  1292                     i += 2;

  1293                     addReference(fi[0]);

  1294                     break;

  1295                 }

  1296                 case opc_checkcast: {

  1297                     int indx = readUShortArg(byteCodes, i);

  1298                     generateCheckcast(indx, smapper);

  1299                     i += 2;

  1300                     break;

  1301                 }

  1302                 case opc_instanceof: {

  1303                     int indx = readUShortArg(byteCodes, i);

  1304                     generateInstanceOf(indx, smapper);

  1305                     i += 2;

  1306                     break;

  1307                 }

  1308                 case opc_athrow: {

  1309                     final CharSequence v = smapper.popA();

  1310                     smapper.clear();

  1312                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1313                          smapper.pushA(), v);

  1314                     break;

  1315                 }

  1317                 case opc_monitorenter: {

  1318                     debug("/* monitor enter */");

  1319                     smapper.popA();

  1320                     break;

  1321                 }

  1323                 case opc_monitorexit: {

  1324                     debug("/* monitor exit */");

  1325                     smapper.popA();

  1326                     break;

  1327                 }

  1329                 case opc_wide:

  1330                     wide = true;

  1331                     break;

  1333                 default: {

  1334                     wide = false;

  1335                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1336                          Integer.toString(c));

  1337                 }

  1338             }

  1339             if (debug(" //")) {

  1340                 generateByteCodeComment(prev, i, byteCodes);

  1341             }

  1342             if (outChanged) {

  1343                 append("\n");

  1344             }

  1345         }

  1346         if (previousTrap != null) {

  1347             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1348         }

  1349         if (didBranches) {

  1350             append("\n    }\n");

  1351         }

  1352         while (openBraces-- > 0) {

  1353             append('}');

  1354         }

  1355         append("\n};");

  1356     }

  1358     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1359         int i, final CharSequence v2, final CharSequence v1,

  1360         final String test, int topMostLabel

  1361     ) throws IOException {

  1362         mapper.flush(this);

  1363         int indx = i + readShortArg(byteCodes, i);

  1364         append("if ((").append(v1)

  1365            .append(") ").append(test).append(" (")

  1366            .append(v2).append(")) ");

  1367         goTo(this, i, indx, topMostLabel);

  1368         return i + 2;

  1369     }

  1371     private int readInt4(byte[] byteCodes, int offset) {

  1372         final int d = byteCodes[offset + 0] << 24;

  1373         final int c = byteCodes[offset + 1] << 16;

  1374         final int b = byteCodes[offset + 2] << 8;

  1375         final int a = byteCodes[offset + 3];

  1376         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1377     }

  1378     private static int readUByte(byte[] byteCodes, int offset) {

  1379         return byteCodes[offset] & 0xff;

  1380     }

  1382     private static int readUShort(byte[] byteCodes, int offset) {

  1383         return ((byteCodes[offset] & 0xff) << 8)

  1384                     | (byteCodes[offset + 1] & 0xff);

  1385     }

  1386     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1387         return readUShort(byteCodes, offsetInstruction + 1);

  1388     }

  1390     private static int readShort(byte[] byteCodes, int offset) {

  1391         int signed = byteCodes[offset];

  1392         byte b0 = (byte)signed;

  1393         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1394     }

  1395     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1396         return readShort(byteCodes, offsetInstruction + 1);

  1397     }

  1399     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1400         int i = 0;

  1401         Boolean count = null;

  1402         boolean array = false;

  1403         sig.append("__");

  1404         int firstPos = sig.length();

  1405         while (i < descriptor.length()) {

  1406             char ch = descriptor.charAt(i++);

  1407             switch (ch) {

  1408                 case '(':

  1409                     count = true;

  1410                     continue;

  1411                 case ')':

  1412                     count = false;

  1413                     continue;

  1414                 case 'B':

  1415                 case 'C':

  1416                 case 'D':

  1417                 case 'F':

  1418                 case 'I':

  1419                 case 'J':

  1420                 case 'S':

  1421                 case 'Z':

  1422                     if (count) {

  1423                         if (array) {

  1424                             sig.append("_3");

  1425                         }

  1426                         sig.append(ch);

  1427                         if (ch == 'J' || ch == 'D') {

  1428                             cnt.append('1');

  1429                         } else {

  1430                             cnt.append('0');

  1431                         }

  1432                     } else {

  1433                         sig.insert(firstPos, ch);

  1434                         if (array) {

  1435                             returnType[0] = '[';

  1436                             sig.insert(firstPos, "_3");

  1437                         } else {

  1438                             returnType[0] = ch;

  1439                         }

  1440                     }

  1441                     array = false;

  1442                     continue;

  1443                 case 'V':

  1444                     assert !count;

  1445                     returnType[0] = 'V';

  1446                     sig.insert(firstPos, 'V');

  1447                     continue;

  1448                 case 'L':

  1449                     int next = descriptor.indexOf(';', i);

  1450                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1451                     if (count) {

  1452                         if (array) {

  1453                             sig.append("_3");

  1454                         }

  1455                         sig.append(realSig);

  1456                         cnt.append('0');

  1457                     } else {

  1458                         sig.insert(firstPos, realSig);

  1459                         if (array) {

  1460                             sig.insert(firstPos, "_3");

  1461                         }

  1462                         returnType[0] = 'L';

  1463                     }

  1464                     i = next + 1;

  1465                     array = false;

  1466                     continue;

  1467                 case '[':

  1468                     array = true;

  1469                     continue;

  1470                 default:

  1471                     throw new IllegalStateException("Invalid char: " + ch);

  1472             }

  1473         }

  1474     }

  1476     static String mangleSig(String sig) {

  1477         return mangleSig(sig, 0, sig.length());

  1478     }

  1480     private static String mangleMethodName(String name) {

  1481         StringBuilder sb = new StringBuilder(name.length() * 2);

  1482         int last = name.length();

  1483         for (int i = 0; i < last; i++) {

  1484             final char ch = name.charAt(i);

  1485             switch (ch) {

  1486                 case '_': sb.append("_1"); break;

  1487                 default: sb.append(ch); break;

  1488             }

  1489         }

  1490         return sb.toString();

  1491     }

  1492     private static String mangleSig(String txt, int first, int last) {

  1493         StringBuilder sb = new StringBuilder((last - first) * 2);

  1494         for (int i = first; i < last; i++) {

  1495             final char ch = txt.charAt(i);

  1496             switch (ch) {

  1497                 case '/': sb.append('_'); break;

  1498                 case '_': sb.append("_1"); break;

  1499                 case ';': sb.append("_2"); break;

  1500                 case '[': sb.append("_3"); break;

  1501                 default: sb.append(ch); break;

  1502             }

  1503         }

  1504         return sb.toString();

  1505     }

  1507     private static String mangleClassName(String name) {

  1508         return mangleSig(name);

  1509     }

  1511     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1512         StringBuilder name = new StringBuilder();

  1513         if ("<init>".equals(m.getName())) { // NOI18N

  1514             name.append("cons"); // NOI18N

  1515         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1516             name.append("class"); // NOI18N

  1517         } else {

  1518             name.append(mangleMethodName(m.getName()));

  1519         }

  1521         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1522         return name.toString();

  1523     }

  1525     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1526         StringBuilder name = new StringBuilder();

  1527         String descr = mi[2];//mi.getDescriptor();

  1528         String nm= mi[1];

  1529         if ("<init>".equals(nm)) { // NOI18N

  1530             name.append("cons"); // NOI18N

  1531         } else {

  1532             name.append(mangleMethodName(nm));

  1533         }

  1534         countArgs(descr, returnType, name, cnt);

  1535         return name.toString();

  1536     }

  1538     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1539     throws IOException {

  1540         int methodIndex = readUShortArg(byteCodes, i);

  1541         String[] mi = jc.getFieldInfoName(methodIndex);

  1542         char[] returnType = { 'V' };

  1543         StringBuilder cnt = new StringBuilder();

  1544         String mn = findMethodName(mi, cnt, returnType);

  1546         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1547         final CharSequence[] vars = new CharSequence[numArguments];

  1549         for (int j = numArguments - 1; j >= 0; --j) {

  1550             vars[j] = mapper.popValue();

  1551         }

  1553         if (returnType[0] != 'V') {

  1554             append("var ")

  1555                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1556                .append(" = ");

  1557         }

  1559         final String in = mi[0];

  1560         append(accessClass(mangleClassName(in)));

  1561         append("(false).");

  1562         if (mn.startsWith("cons_")) {

  1563             append("constructor.");

  1564         }

  1565         append(mn);

  1566         if (isStatic) {

  1567             append('(');

  1568         } else {

  1569             append(".call(");

  1570         }

  1571         if (numArguments > 0) {

  1572             append(vars[0]);

  1573             for (int j = 1; j < numArguments; ++j) {

  1574                 append(", ");

  1575                 append(vars[j]);

  1576             }

  1577         }

  1578         append(");");

  1579         i += 2;

  1580         addReference(in);

  1581         return i;

  1582     }

  1583     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1584     throws IOException {

  1585         int methodIndex = readUShortArg(byteCodes, i);

  1586         String[] mi = jc.getFieldInfoName(methodIndex);

  1587         char[] returnType = { 'V' };

  1588         StringBuilder cnt = new StringBuilder();

  1589         String mn = findMethodName(mi, cnt, returnType);

  1591         final int numArguments = cnt.length() + 1;

  1592         final CharSequence[] vars = new CharSequence[numArguments];

  1594         for (int j = numArguments - 1; j >= 0; --j) {

  1595             vars[j] = mapper.popValue();

  1596         }

  1598         if (returnType[0] != 'V') {

  1599             append("var ")

  1600                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1601                .append(" = ");

  1602         }

  1604         append(vars[0]).append('.');

  1605         append(mn);

  1606         append('(');

  1607         String sep = "";

  1608         for (int j = 1; j < numArguments; ++j) {

  1609             append(sep);

  1610             append(vars[j]);

  1611             sep = ", ";

  1612         }

  1613         append(");");

  1614         i += 2;

  1615         return i;

  1616     }

  1618     private void addReference(String cn) throws IOException {

  1619         if (requireReference(cn)) {

  1620             debug(" /* needs " + cn + " */");

  1621         }

  1622     }

  1624     private void outType(String d, StringBuilder out) {

  1625         int arr = 0;

  1626         while (d.charAt(0) == '[') {

  1627             out.append('A');

  1628             d = d.substring(1);

  1629         }

  1630         if (d.charAt(0) == 'L') {

  1631             assert d.charAt(d.length() - 1) == ';';

  1632             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1633         } else {

  1634             out.append(d);

  1635         }

  1636     }

  1638     private String encodeConstant(int entryIndex) throws IOException {

  1639         String[] classRef = { null };

  1640         String s = jc.stringValue(entryIndex, classRef);

  1641         if (classRef[0] != null) {

  1642             if (classRef[0].startsWith("[")) {

  1643                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "')";

  1644             } else {

  1645                 addReference(classRef[0]);

  1646                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1647             }

  1648         }

  1649         return s;

  1650     }

  1652     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1653         byte[] arr = m.findAnnotationData(true);

  1654         if (arr == null) {

  1655             return null;

  1656         }

  1657         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1658         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1659         class P extends AnnotationParser {

  1660             public P() {

  1661                 super(false, true);

  1662             }

  1664             int cnt;

  1665             String[] args = new String[30];

  1666             String body;

  1667             boolean javacall;

  1668             boolean html4j;

  1670             @Override

  1671             protected void visitAttr(String type, String attr, String at, String value) {

  1672                 if (type.equals(jvmType)) {

  1673                     if ("body".equals(attr)) {

  1674                         body = value;

  1675                     } else if ("args".equals(attr)) {

  1676                         args[cnt++] = value;

  1677                     } else {

  1678                         throw new IllegalArgumentException(attr);

  1679                     }

  1680                 }

  1681                 if (type.equals(htmlType)) {

  1682                     html4j = true;

  1683                     if ("body".equals(attr)) {

  1684                         body = value;

  1685                     } else if ("args".equals(attr)) {

  1686                         args[cnt++] = value;

  1687                     } else if ("javacall".equals(attr)) {

  1688                         javacall = "1".equals(value);

  1689                     } else {

  1690                         throw new IllegalArgumentException(attr);

  1691                     }

  1692                 }

  1693             }

  1694         }

  1695         P p = new P();

  1696         p.parse(arr, jc);

  1697         if (p.body == null) {

  1698             return null;

  1699         }

  1700         StringBuilder cnt = new StringBuilder();

  1701         final String mn = findMethodName(m, cnt);

  1702         append(destObject).append(".").append(mn);

  1703         append(" = function(");

  1704         String space = "";

  1705         int index = 0;

  1706         StringBuilder toValue = new StringBuilder();

  1707         for (int i = 0; i < cnt.length(); i++) {

  1708             append(space);

  1709             space = outputArg(this, p.args, index);

  1710             if (p.html4j && space.length() > 0) {

  1711                 toValue.append("\n  ").append(p.args[index]).append(" = vm.org_apidesign_bck2brwsr_emul_lang_System(false).toJS(").

  1712                     append(p.args[index]).append(");");

  1713             }

  1714             index++;

  1715         }

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

  1717         append(toValue.toString());

  1718         if (p.javacall) {

  1719             int lastSlash = jc.getClassName().lastIndexOf('/');

  1720             final String pkg = jc.getClassName().substring(0, lastSlash);

  1721             append(mangleCallbacks(pkg, p.body));

  1722             requireReference(pkg + "/$JsCallbacks$");

  1723         } else {

  1724             append(p.body);

  1725         }

  1726         append("\n}\n");

  1727         return mn;

  1728     }

  1730     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1731         StringBuilder sb = new StringBuilder();

  1732         int pos = 0;

  1733         for (;;) {

  1734             int next = body.indexOf(".@", pos);

  1735             if (next == -1) {

  1736                 sb.append(body.substring(pos));

  1737                 body = sb.toString();

  1738                 break;

  1739             }

  1740             int ident = next;

  1741             while (ident > 0) {

  1742                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1743                     ident++;

  1744                     break;

  1745                 }

  1746             }

  1747             String refId = body.substring(ident, next);

  1749             sb.append(body.substring(pos, ident));

  1751             int sigBeg = body.indexOf('(', next);

  1752             int sigEnd = body.indexOf(')', sigBeg);

  1753             int colon4 = body.indexOf("::", next);

  1754             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1755                 throw new IllegalStateException("Malformed body " + body);

  1756             }

  1757             String fqn = body.substring(next + 2, colon4);

  1758             String method = body.substring(colon4 + 2, sigBeg);

  1759             String params = body.substring(sigBeg, sigEnd + 1);

  1761             int paramBeg = body.indexOf('(', sigEnd + 1);

  1763             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1764             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1765             sb.append("(").append(refId);

  1766             if (body.charAt(paramBeg + 1) != ')') {

  1767                 sb.append(",");

  1768             }

  1769             pos = paramBeg + 1;

  1770         }

  1771         sb = null;

  1772         pos = 0;

  1773         for (;;) {

  1774             int next = body.indexOf("@", pos);

  1775             if (next == -1) {

  1776                 if (sb == null) {

  1777                     return body;

  1778                 }

  1779                 sb.append(body.substring(pos));

  1780                 return sb;

  1781             }

  1782             if (sb == null) {

  1783                 sb = new StringBuilder();

  1784             }

  1786             sb.append(body.substring(pos, next));

  1788             int sigBeg = body.indexOf('(', next);

  1789             int sigEnd = body.indexOf(')', sigBeg);

  1790             int colon4 = body.indexOf("::", next);

  1791             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1792                 throw new IllegalStateException("Malformed body " + body);

  1793             }

  1794             String fqn = body.substring(next + 1, colon4);

  1795             String method = body.substring(colon4 + 2, sigBeg);

  1796             String params = body.substring(sigBeg, sigEnd + 1);

  1798             int paramBeg = body.indexOf('(', sigEnd + 1);

  1800             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1801             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1802             sb.append("(");

  1803             pos = paramBeg + 1;

  1804         }

  1805     }

  1807     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

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

  1809             params = params.substring(1);

  1810         }

  1811         if (params.endsWith(")")) {

  1812             params = params.substring(0, params.length() - 1);

  1813         }

  1814         StringBuilder sb = new StringBuilder();

  1815         final String fqnu = fqn.replace('.', '_');

  1816         final String rfqn = mangleClassName(fqnu);

  1817         final String rm = mangleMethodName(method);

  1818         final String srp;

  1819         {

  1820             StringBuilder pb = new StringBuilder();

  1821             int len = params.length();

  1822             int indx = 0;

  1823             while (indx < len) {

  1824                 char ch = params.charAt(indx);

  1825                 if (ch == '[' || ch == 'L') {

  1826                     pb.append("Ljava/lang/Object;");

  1827                     indx = params.indexOf(';', indx) + 1;

  1828                 } else {

  1829                     pb.append(ch);

  1830                     indx++;

  1831                 }

  1832             }

  1833             srp = mangleSig(pb.toString());

  1834         }

  1835         final String rp = mangleSig(params);

  1836         final String mrp = mangleMethodName(rp);

  1837         sb.append(rfqn).append("$").append(rm).

  1838             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1839         if (!isStatic) {

  1840             sb.append('L').append(fqnu).append("_2");

  1841         }

  1842         sb.append(srp);

  1843         return sb.toString();

  1844     }

  1846     private static String className(ClassData jc) {

  1847         //return jc.getName().getInternalName().replace('/', '_');

  1848         return mangleClassName(jc.getClassName());

  1849     }

  1851     private static String[] findAnnotation(

  1852         byte[] arr, ClassData cd, final String className,

  1853         final String... attrNames

  1854     ) throws IOException {

  1855         if (arr == null) {

  1856             return null;

  1857         }

  1858         final String[] values = new String[attrNames.length];

  1859         final boolean[] found = { false };

  1860         final String jvmType = "L" + className.replace('.', '/') + ";";

  1861         AnnotationParser ap = new AnnotationParser(false, true) {

  1862             @Override

  1863             protected void visitAttr(String type, String attr, String at, String value) {

  1864                 if (type.equals(jvmType)) {

  1865                     found[0] = true;

  1866                     for (int i = 0; i < attrNames.length; i++) {

  1867                         if (attrNames[i].equals(attr)) {

  1868                             values[i] = value;

  1869                         }

  1870                     }

  1871                 }

  1872             }

  1874         };

  1875         ap.parse(arr, cd);

  1876         return found[0] ? values : null;

  1877     }

  1879     private CharSequence initField(FieldData v) {

  1880         final String is = v.getInternalSig();

  1881         if (is.length() == 1) {

  1882             switch (is.charAt(0)) {

  1883                 case 'S':

  1884                 case 'J':

  1885                 case 'B':

  1886                 case 'Z':

  1887                 case 'C':

  1888                 case 'I': return " = 0;";

  1889                 case 'F':

  1890                 case 'D': return " = 0.0;";

  1891                 default:

  1892                     throw new IllegalStateException(is);

  1893             }

  1894         }

  1895         return " = null;";

  1896     }

  1898     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  1899         AnnotationParser ap = new AnnotationParser(true, false) {

  1900             int[] cnt = new int[32];

  1901             int depth;

  1903             @Override

  1904             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1905                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1906                 requireReference(slashType);

  1908                 if (cnt[depth]++ > 0) {

  1909                     append(",");

  1910                 }

  1911                 if (top) {

  1912                     append('"').append(attrType).append("\" : ");

  1913                 }

  1914                 append("{\n");

  1915                 cnt[++depth] = 0;

  1916             }

  1918             @Override

  1919             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1920                 append("\n}\n");

  1921                 depth--;

  1922             }

  1924             @Override

  1925             protected void visitValueStart(String attrName, char type) throws IOException {

  1926                 if (cnt[depth]++ > 0) {

  1927                     append(",\n");

  1928                 }

  1929                 cnt[++depth] = 0;

  1930                 if (attrName != null) {

  1931                     append(attrName).append(" : ");

  1932                 }

  1933                 if (type == '[') {

  1934                     append("[");

  1935                 }

  1936             }

  1938             @Override

  1939             protected void visitValueEnd(String attrName, char type) throws IOException {

  1940                 if (type == '[') {

  1941                     append("]");

  1942                 }

  1943                 depth--;

  1944             }

  1946             @Override

  1947             protected void visitAttr(String type, String attr, String attrType, String value)

  1948             throws IOException {

  1949                 if (attr == null && value == null) {

  1950                     return;

  1951                 }

  1952                 append(value);

  1953             }

  1955             @Override

  1956             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1957             throws IOException {

  1958                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1959                 requireReference(slashType);

  1961                 append(accessClass(mangleClassName(slashType)))

  1962                    .append("(false).constructor.fld_").append(value);

  1963             }

  1964         };

  1965         ap.parse(data, cd);

  1966     }

  1968     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1969         final String name = args[indx];

  1970         if (name == null) {

  1971             return "";

  1972         }

  1973         if (name.contains(",")) {

  1974             throw new IOException("Wrong parameter with ',': " + name);

  1975         }

  1976         out.append(name);

  1977         return ",";

  1978     }

  1980     final void emitNoFlush(

  1981         StackMapper sm,

  1982         final String format, final CharSequence... params

  1983     ) throws IOException {

  1984         emitImpl(this, format, params);

  1985     }

  1986     static final void emit(

  1987         StackMapper sm,

  1988         final Appendable out,

  1989         final String format, final CharSequence... params

  1990     ) throws IOException {

  1991         sm.flush(out);

  1992         emitImpl(out, format, params);

  1993     }

  1994     static void emitImpl(final Appendable out,

  1995                              final String format,

  1996                              final CharSequence... params) throws IOException {

  1997         final int length = format.length();

  1999         int processed = 0;

  2000         int paramOffset = format.indexOf('@');

  2001         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2002             final char paramChar = format.charAt(paramOffset + 1);

  2003             if ((paramChar >= '1') && (paramChar <= '9')) {

  2004                 final int paramIndex = paramChar - '0' - 1;

  2006                 out.append(format, processed, paramOffset);

  2007                 out.append(params[paramIndex]);

  2009                 ++paramOffset;

  2010                 processed = paramOffset + 1;

  2011             }

  2013             paramOffset = format.indexOf('@', paramOffset + 1);

  2014         }

  2016         out.append(format, processed, length);

  2017     }

  2019     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2020         append("} catch (e) {\n");

  2021         int finallyPC = -1;

  2022         for (TrapData e : traps) {

  2023             if (e == null) {

  2024                 break;

  2025             }

  2026             if (e.catch_cpx != 0) { //not finally

  2027                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2028                 addReference(classInternalName);

  2029                 append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  2030                 append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  2031                 append("var stA0 = e;");

  2032                 goTo(this, current, e.handler_pc, topMostLabel);

  2033                 append("}\n");

  2034             } else {

  2035                 finallyPC = e.handler_pc;

  2036             }

  2037         }

  2038         if (finallyPC == -1) {

  2039             append("throw e;");

  2040         } else {

  2041             append("var stA0 = e;");

  2042             goTo(this, current, finallyPC, topMostLabel);

  2043         }

  2044         append("\n}");

  2045     }

  2047     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2048         if (to < current) {

  2049             if (canBack < to) {

  2050                 out.append("{ gt = 0; continue X_" + to + "; }");

  2051             } else {

  2052                 out.append("{ gt = " + to + "; continue X_0; }");

  2053             }

  2054         } else {

  2055             out.append("{ gt = " + to + "; break IF; }");

  2056         }

  2057     }

  2059     private static void emitIf(

  2060         StackMapper sm,

  2061         Appendable out, String pattern,

  2062         CharSequence param,

  2063         int current, int to, int canBack

  2064     ) throws IOException {

  2065         sm.flush(out);

  2066         emitImpl(out, pattern, param);

  2067         goTo(out, current, to, canBack);

  2068     }

  2070     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2071         String jvmType;

  2072         switch (atype) {

  2073             case 4: jvmType = "[Z"; break;

  2074             case 5: jvmType = "[C"; break;

  2075             case 6: jvmType = "[F"; break;

  2076             case 7: jvmType = "[D"; break;

  2077             case 8: jvmType = "[B"; break;

  2078             case 9: jvmType = "[S"; break;

  2079             case 10: jvmType = "[I"; break;

  2080             case 11: jvmType = "[J"; break;

  2081             default: throw new IllegalStateException("Array type: " + atype);

  2082         }

  2083         emit(smapper, this, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  2084              smapper.popI(), smapper.pushA(), jvmType);

  2085     }

  2087     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2088         String typeName = jc.getClassName(type);

  2089         if (typeName.startsWith("[")) {

  2090             typeName = "[" + typeName;

  2091         } else {

  2092             typeName = "[L" + typeName + ";";

  2093         }

  2094         emit(smapper, this, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  2095              smapper.popI(), smapper.pushA(), typeName);

  2096     }

  2098     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2099         String typeName = jc.getClassName(type);

  2100         int dim = readUByte(byteCodes, ++i);

  2101         StringBuilder dims = new StringBuilder();

  2102         dims.append('[');

  2103         for (int d = 0; d < dim; d++) {

  2104             if (d != 0) {

  2105                 dims.insert(1, ",");

  2106             }

  2107             dims.insert(1, smapper.popI());

  2108         }

  2109         dims.append(']');

  2110         emit(smapper, this, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  2111              dims.toString(), smapper.pushA(), typeName);

  2112         return i;

  2113     }

  2115     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2116         int table = i / 4 * 4 + 4;

  2117         int dflt = i + readInt4(byteCodes, table);

  2118         table += 4;

  2119         int low = readInt4(byteCodes, table);

  2120         table += 4;

  2121         int high = readInt4(byteCodes, table);

  2122         table += 4;

  2123         final CharSequence swVar = smapper.popValue();

  2124         smapper.flush(this);

  2125         append("switch (").append(swVar).append(") {\n");

  2126         while (low <= high) {

  2127             int offset = i + readInt4(byteCodes, table);

  2128             table += 4;

  2129             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2130             low++;

  2131         }

  2132         append("  default: ");

  2133         goTo(this, i, dflt, topMostLabel);

  2134         append("\n}");

  2135         i = table - 1;

  2136         return i;

  2137     }

  2139     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2140         int table = i / 4 * 4 + 4;

  2141         int dflt = i + readInt4(byteCodes, table);

  2142         table += 4;

  2143         int n = readInt4(byteCodes, table);

  2144         table += 4;

  2145         final CharSequence swVar = smapper.popValue();

  2146         smapper.flush(this);

  2147         append("switch (").append(swVar).append(") {\n");

  2148         while (n-- > 0) {

  2149             int cnstnt = readInt4(byteCodes, table);

  2150             table += 4;

  2151             int offset = i + readInt4(byteCodes, table);

  2152             table += 4;

  2153             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2154         }

  2155         append("  default: ");

  2156         goTo(this, i, dflt, topMostLabel);

  2157         append("\n}");

  2158         i = table - 1;

  2159         return i;

  2160     }

  2162     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2163         final String type = jc.getClassName(indx);

  2164         if (!type.startsWith("[")) {

  2165             emit(smapper, this, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  2166                  smapper.popA(), smapper.pushI(),

  2167                  type.replace('/', '_'));

  2168         } else {

  2169             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);",

  2170                 smapper.popA(), smapper.pushI(),

  2171                 type

  2172             );

  2173         }

  2174     }

  2176     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2177         final String type = jc.getClassName(indx);

  2178         if (!type.startsWith("[")) {

  2179             emitNoFlush(smapper,

  2180                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  2181                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2182         } else {

  2183             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);",

  2184                  smapper.getT(0, VarType.REFERENCE, false), type

  2185             );

  2186         }

  2187     }

  2189     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2190         for (int j = prev; j <= i; j++) {

  2191             append(" ");

  2192             final int cc = readUByte(byteCodes, j);

  2193             append(Integer.toString(cc));

  2194         }

  2195     }

  2196 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Tue, 29 Apr 2014 16:28:06 +0200
changeset 1510	b242abb07fbf
parent 1509	16f50abb439b
child 1513	ba912ef24b27
permissions	-rw-r--r--