hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@6575d1848af3

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

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

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

    25  *

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

    27  */

    28 abstract class ByteCodeToJavaScript {

    29     private ClassData jc;

    30     final Appendable out;

    31     final ObfuscationDelegate obfuscationDelegate;

    33     protected ByteCodeToJavaScript(Appendable out) {

    34         this(out, ObfuscationDelegate.NULL);

    35     }

    37     protected ByteCodeToJavaScript(

    38             Appendable out, ObfuscationDelegate obfuscationDelegate) {

    39         this.out = out;

    40         this.obfuscationDelegate = obfuscationDelegate;

    41     }

    43     /* Collects additional required resources.

    44      *

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

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

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

    48      */

    49     protected abstract boolean requireReference(String internalClassName);

    51     /*

    52      * @param resourcePath name of resources to read

    53      */

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

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

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

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

    59      *

    60      * @param className suggested name of the class

    61      */

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

    63         return className + " = ";

    64     }

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

    66         return classOperation;

    67     }

    69     abstract String getVMObject();

    71     /** Prints out a debug message.

    72      *

    73      * @param msg the message

    74      * @return true if the message has been printed

    75      * @throws IOException

    76      */

    77     boolean debug(String msg) throws IOException {

    78         out.append(msg);

    79         return true;

    80     }

    82     /**

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

    84      *

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

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

    87      *

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

    89      */

    91     public String compile(InputStream classFile) throws IOException {

    92         this.jc = new ClassData(classFile);

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

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

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

    96             );

    97         }

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

    99         {

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

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

   102                 "resource", "processByteCode"

   103             );

   104             if (arr != null) {

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

   106                     requireScript(arr[0]);

   107                 }

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

   109                     return null;

   110                 }

   111             }

   112         }

   113         {

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

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

   116                 "value"

   117             );

   118             if (arr != null) {

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

   120                     requireScript(arr[0]);

   121                 } else {

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

   123                     requireScript(

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

   125                     );

   126                 }

   127             }

   128         }

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

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

   131             "container", "prototype"

   132         );

   133         StringArray toInitilize = new StringArray();

   134         final String className = className(jc);

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

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

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

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

   139         if (proto == null) {

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

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

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

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

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

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

   146         } else {

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

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

   149                 proto[0] = "p";

   150             }

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

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

   153         }

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

   155             if (v.isStatic()) {

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

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

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

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

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

   161             } else {

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

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

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

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

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

   167                    .append("; };");

   168             }

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

   171         }

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

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

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

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

   176                 "name", "value"

   177             );

   178             if (only != null) {

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

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

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

   182                 }

   183                 continue;

   184             }

   185             String destObject;

   186             String mn;

   187             out.append("\n    ");

   188             if (m.isStatic()) {

   189                 destObject = "c";

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

   191             } else {

   192                 if (m.isConstructor()) {

   193                     destObject = "CLS";

   194                     mn = generateInstanceMethod(destObject, m);

   195                 } else {

   196                     destObject = "c";

   197                     mn = generateInstanceMethod(destObject, m);

   198                 }

   199             }

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

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

   202             if (runAnno != null) {

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

   204                 generateAnno(jc, out, runAnno);

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

   206             }

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

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

   209         }

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

   211         out.append("\n    function fillInstOf(x) {");

   212         String instOfName = "$instOf_" + className;

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

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

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

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

   217             requireReference(superInterface);

   218         }

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

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

   221         out.append("\n    fillInstOf(c);");

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

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

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

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

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

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

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

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

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

   231         if (classAnno != null) {

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

   233             generateAnno(jc, out, classAnno);

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

   235         }

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

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

   238         }

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

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

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

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

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

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

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

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

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

   248                 "name", "value"

   249             );

   250             if (only != null) {

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

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

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

   254                 }

   255                 continue;

   256             }

   257             if (!v.isStatic()) {

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

   259                     append(className).append('_').

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

   261             }

   262         }

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

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

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

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

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

   270 //        StringBuilder sb = new StringBuilder();

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

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

   273 //        }

   274         return "";

   275     }

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

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

   278         if (jsb != null) {

   279             return jsb;

   280         }

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

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

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

   284         }

   285         generateMethod(destObject, mn, m);

   286         return mn;

   287     }

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

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

   291         if (jsb != null) {

   292             return jsb;

   293         }

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

   295         generateMethod(destObject, mn, m);

   296         return mn;

   297     }

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

   300             throws IOException {

   301         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   302         TrapDataIterator trap = m.getTrapDataIterator();

   303         final LocalsMapper lmapper =

   304                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   311         if (byteCodes == null) {

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

   313                .append(jc.getClassName()).append('.')

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

   315             out.append("};");

   316             return;

   317         }

   319         final StackMapper smapper = new StackMapper();

   321         if (!m.isStatic()) {

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

   323         }

   325         int lastStackFrame = -1;

   326         TrapData[] previousTrap = null;

   327         boolean wide = false;

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

   330         int openBraces = 0;

   331         int topMostLabel = 0;

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

   333             int prev = i;

   334             stackMapIterator.advanceTo(i);

   335             boolean changeInCatch = trap.advanceTo(i);

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

   337                 if (previousTrap != null) {

   338                     generateCatch(previousTrap, i, topMostLabel);

   339                     previousTrap = null;

   340                 }

   341             }

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

   343                 smapper.flush(out);

   344                 if (i != 0) {

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

   346                 }

   347                 if (openBraces > 64) {

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

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

   350                     }

   351                     openBraces = 1;

   352                     topMostLabel = i;

   353                 }

   355                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   359                 openBraces++;

   360                 changeInCatch = true;

   361             } else {

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

   363             }

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

   365                 out.append("try {");

   366                 previousTrap = trap.current();

   367             }

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

   369             switch (c) {

   370                 case opc_aload_0:

   371                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(0));

   372                     break;

   373                 case opc_iload_0:

   374                     smapper.assign(out, VarType.INTEGER, lmapper.getI(0));

   375                     break;

   376                 case opc_lload_0:

   377                     smapper.assign(out, VarType.LONG, lmapper.getL(0));

   378                     break;

   379                 case opc_fload_0:

   380                     smapper.assign(out, VarType.FLOAT, lmapper.getF(0));

   381                     break;

   382                 case opc_dload_0:

   383                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(0));

   384                     break;

   385                 case opc_aload_1:

   386                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(1));

   387                     break;

   388                 case opc_iload_1:

   389                     smapper.assign(out, VarType.INTEGER, lmapper.getI(1));

   390                     break;

   391                 case opc_lload_1:

   392                     smapper.assign(out, VarType.LONG, lmapper.getL(1));

   393                     break;

   394                 case opc_fload_1:

   395                     smapper.assign(out, VarType.FLOAT, lmapper.getF(1));

   396                     break;

   397                 case opc_dload_1:

   398                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(1));

   399                     break;

   400                 case opc_aload_2:

   401                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(2));

   402                     break;

   403                 case opc_iload_2:

   404                     smapper.assign(out, VarType.INTEGER, lmapper.getI(2));

   405                     break;

   406                 case opc_lload_2:

   407                     smapper.assign(out, VarType.LONG, lmapper.getL(2));

   408                     break;

   409                 case opc_fload_2:

   410                     smapper.assign(out, VarType.FLOAT, lmapper.getF(2));

   411                     break;

   412                 case opc_dload_2:

   413                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(2));

   414                     break;

   415                 case opc_aload_3:

   416                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(3));

   417                     break;

   418                 case opc_iload_3:

   419                     smapper.assign(out, VarType.INTEGER, lmapper.getI(3));

   420                     break;

   421                 case opc_lload_3:

   422                     smapper.assign(out, VarType.LONG, lmapper.getL(3));

   423                     break;

   424                 case opc_fload_3:

   425                     smapper.assign(out, VarType.FLOAT, lmapper.getF(3));

   426                     break;

   427                 case opc_dload_3:

   428                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(3));

   429                     break;

   430                 case opc_iload: {

   431                     ++i;

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

   433                                           : readUByte(byteCodes, i);

   434                     wide = false;

   435                     smapper.assign(out, VarType.INTEGER, lmapper.getI(indx));

   436                     break;

   437                 }

   438                 case opc_lload: {

   439                     ++i;

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

   441                                           : readUByte(byteCodes, i);

   442                     wide = false;

   443                     smapper.assign(out, VarType.LONG, lmapper.getL(indx));

   444                     break;

   445                 }

   446                 case opc_fload: {

   447                     ++i;

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

   449                                           : readUByte(byteCodes, i);

   450                     wide = false;

   451                     smapper.assign(out, VarType.FLOAT, lmapper.getF(indx));

   452                     break;

   453                 }

   454                 case opc_dload: {

   455                     ++i;

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

   457                                           : readUByte(byteCodes, i);

   458                     wide = false;

   459                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(indx));

   460                     break;

   461                 }

   462                 case opc_aload: {

   463                     ++i;

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

   465                                           : readUByte(byteCodes, i);

   466                     wide = false;

   467                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(indx));

   468                     break;

   469                 }

   470                 case opc_istore: {

   471                     ++i;

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

   473                                           : readUByte(byteCodes, i);

   474                     wide = false;

   475                     emit(smapper, out, "var @1 = @2;",

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

   477                     break;

   478                 }

   479                 case opc_lstore: {

   480                     ++i;

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

   482                                           : readUByte(byteCodes, i);

   483                     wide = false;

   484                     emit(smapper, out, "var @1 = @2;",

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

   486                     break;

   487                 }

   488                 case opc_fstore: {

   489                     ++i;

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

   491                                           : readUByte(byteCodes, i);

   492                     wide = false;

   493                     emit(smapper, out, "var @1 = @2;",

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

   495                     break;

   496                 }

   497                 case opc_dstore: {

   498                     ++i;

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

   500                                           : readUByte(byteCodes, i);

   501                     wide = false;

   502                     emit(smapper, out, "var @1 = @2;",

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

   504                     break;

   505                 }

   506                 case opc_astore: {

   507                     ++i;

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

   509                                           : readUByte(byteCodes, i);

   510                     wide = false;

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

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

   513                     break;

   514                 }

   515                 case opc_astore_0:

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

   517                     break;

   518                 case opc_istore_0:

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

   520                     break;

   521                 case opc_lstore_0:

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

   523                     break;

   524                 case opc_fstore_0:

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

   526                     break;

   527                 case opc_dstore_0:

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

   529                     break;

   530                 case opc_astore_1:

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

   532                     break;

   533                 case opc_istore_1:

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

   535                     break;

   536                 case opc_lstore_1:

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

   538                     break;

   539                 case opc_fstore_1:

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

   541                     break;

   542                 case opc_dstore_1:

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

   544                     break;

   545                 case opc_astore_2:

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

   547                     break;

   548                 case opc_istore_2:

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

   550                     break;

   551                 case opc_lstore_2:

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

   553                     break;

   554                 case opc_fstore_2:

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

   556                     break;

   557                 case opc_dstore_2:

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

   559                     break;

   560                 case opc_astore_3:

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

   562                     break;

   563                 case opc_istore_3:

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

   565                     break;

   566                 case opc_lstore_3:

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

   568                     break;

   569                 case opc_fstore_3:

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

   571                     break;

   572                 case opc_dstore_3:

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

   574                     break;

   575                 case opc_iadd:

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

   577                     break;

   578                 case opc_ladd:

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

   580                     break;

   581                 case opc_fadd:

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

   583                     break;

   584                 case opc_dadd:

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

   586                     break;

   587                 case opc_isub:

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

   589                     break;

   590                 case opc_lsub:

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

   592                     break;

   593                 case opc_fsub:

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

   595                     break;

   596                 case opc_dsub:

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

   598                     break;

   599                 case opc_imul:

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

   601                     break;

   602                 case opc_lmul:

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

   604                     break;

   605                 case opc_fmul:

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

   607                     break;

   608                 case opc_dmul:

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

   610                     break;

   611                 case opc_idiv:

   612                     smapper.replace(out, VarType.INTEGER, "@1.div32(@2)",

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

   614                     break;

   615                 case opc_ldiv:

   616                     smapper.replace(out, VarType.LONG, "@1.div64(@2)",

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

   618                     break;

   619                 case opc_fdiv:

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

   621                     break;

   622                 case opc_ddiv:

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

   624                     break;

   625                 case opc_irem:

   626                     smapper.replace(out, VarType.INTEGER, "@1.mod32(@2)",

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

   628                     break;

   629                 case opc_lrem:

   630                     smapper.replace(out, VarType.LONG, "@1.mod64(@2)",

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

   632                     break;

   633                 case opc_frem:

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

   635                     break;

   636                 case opc_drem:

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

   638                     break;

   639                 case opc_iand:

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

   641                     break;

   642                 case opc_land:

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

   644                     break;

   645                 case opc_ior:

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

   647                     break;

   648                 case opc_lor:

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

   650                     break;

   651                 case opc_ixor:

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

   653                     break;

   654                 case opc_lxor:

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

   656                     break;

   657                 case opc_ineg:

   658                     smapper.replace(out, VarType.INTEGER, "@1.neg32()", smapper.getI(0));

   659                     break;

   660                 case opc_lneg:

   661                     smapper.replace(out, VarType.LONG, "@1.neg64()", smapper.getL(0));

   662                     break;

   663                 case opc_fneg:

   664                     smapper.replace(out, VarType.FLOAT, "(-@1)", smapper.getF(0));

   665                     break;

   666                 case opc_dneg:

   667                     smapper.replace(out, VarType.DOUBLE, "(-@1)", smapper.getD(0));

   668                     break;

   669                 case opc_ishl:

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

   671                     break;

   672                 case opc_lshl:

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

   674                     break;

   675                 case opc_ishr:

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

   677                     break;

   678                 case opc_lshr:

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

   680                     break;

   681                 case opc_iushr:

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

   683                     break;

   684                 case opc_lushr:

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

   686                     break;

   687                 case opc_iinc: {

   688                     ++i;

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

   690                                              : readUByte(byteCodes, i);

   691                     ++i;

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

   693                                             : byteCodes[i];

   694                     wide = false;

   695                     if (incrBy == 1) {

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

   697                     } else {

   698                         emit(smapper, out, "@1 += @2;",

   699                              lmapper.getI(varIndx),

   700                              Integer.toString(incrBy));

   701                     }

   702                     break;

   703                 }

   704                 case opc_return:

   705                     emit(smapper, out, "return;");

   706                     break;

   707                 case opc_ireturn:

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

   709                     break;

   710                 case opc_lreturn:

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

   712                     break;

   713                 case opc_freturn:

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

   715                     break;

   716                 case opc_dreturn:

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

   718                     break;

   719                 case opc_areturn:

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

   721                     break;

   722                 case opc_i2l:

   723                     smapper.replace(out, VarType.LONG, "@1", smapper.getI(0));

   724                     break;

   725                 case opc_i2f:

   726                     smapper.replace(out, VarType.FLOAT, "@1", smapper.getI(0));

   727                     break;

   728                 case opc_i2d:

   729                     smapper.replace(out, VarType.DOUBLE, "@1", smapper.getI(0));

   730                     break;

   731                 case opc_l2i:

   732                     smapper.replace(out, VarType.INTEGER, "@1.toInt32()", smapper.getL(0));

   733                     break;

   734                     // max int check?

   735                 case opc_l2f:

   736                     smapper.replace(out, VarType.FLOAT, "@1.toFP()", smapper.getL(0));

   737                     break;

   738                 case opc_l2d:

   739                     smapper.replace(out, VarType.DOUBLE, "@1.toFP()", smapper.getL(0));

   740                     break;

   741                 case opc_f2d:

   742                     smapper.replace(out, VarType.DOUBLE, "@1",

   743                          smapper.getF(0));

   744                     break;

   745                 case opc_d2f:

   746                     smapper.replace(out, VarType.FLOAT, "@1",

   747                          smapper.getD(0));

   748                     break;

   749                 case opc_f2i:

   750                     smapper.replace(out, VarType.INTEGER, "@1.toInt32()",

   751                          smapper.getF(0));

   752                     break;

   753                 case opc_f2l:

   754                     smapper.replace(out, VarType.LONG, "@1.toLong()",

   755                          smapper.getF(0));

   756                     break;

   757                 case opc_d2i:

   758                     smapper.replace(out, VarType.INTEGER, "@1.toInt32()",

   759                          smapper.getD(0));

   760                     break;

   761                 case opc_d2l:

   762                     smapper.replace(out, VarType.LONG, "@1.toLong()", smapper.getD(0));

   763                     break;

   764                 case opc_i2b:

   765                     smapper.replace(out, VarType.INTEGER, "@1.toInt8()", smapper.getI(0));

   766                     break;

   767                 case opc_i2c:

   768                     break;

   769                 case opc_i2s:

   770                     smapper.replace(out, VarType.INTEGER, "@1.toInt16()", smapper.getI(0));

   771                     break;

   772                 case opc_aconst_null:

   773                     smapper.assign(out, VarType.REFERENCE, "null");

   774                     break;

   775                 case opc_iconst_m1:

   776                     smapper.assign(out, VarType.INTEGER, "(-1)");

   777                     break;

   778                 case opc_iconst_0:

   779                     smapper.assign(out, VarType.INTEGER, "(0)");

   780                     break;

   781                 case opc_dconst_0:

   782                     smapper.assign(out, VarType.DOUBLE, "(0)");

   783                     break;

   784                 case opc_lconst_0:

   785                     smapper.assign(out, VarType.LONG, "(0)");

   786                     break;

   787                 case opc_fconst_0:

   788                     smapper.assign(out, VarType.FLOAT, "(0)");

   789                     break;

   790                 case opc_iconst_1:

   791                     smapper.assign(out, VarType.INTEGER, "(1)");

   792                     break;

   793                 case opc_lconst_1:

   794                     smapper.assign(out, VarType.LONG, "(1)");

   795                     break;

   796                 case opc_fconst_1:

   797                     smapper.assign(out, VarType.FLOAT, "(1)");

   798                     break;

   799                 case opc_dconst_1:

   800                     smapper.assign(out, VarType.DOUBLE, "(1)");

   801                     break;

   802                 case opc_iconst_2:

   803                     smapper.assign(out, VarType.INTEGER, "(2)");

   804                     break;

   805                 case opc_fconst_2:

   806                     smapper.assign(out, VarType.FLOAT, "(2)");

   807                     break;

   808                 case opc_iconst_3:

   809                     smapper.assign(out, VarType.INTEGER, "(3)");

   810                     break;

   811                 case opc_iconst_4:

   812                     smapper.assign(out, VarType.INTEGER, "(4)");

   813                     break;

   814                 case opc_iconst_5:

   815                     smapper.assign(out, VarType.INTEGER, "(5)");

   816                     break;

   817                 case opc_ldc: {

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

   819                     String v = encodeConstant(indx);

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

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

   822                     break;

   823                 }

   824                 case opc_ldc_w:

   825                 case opc_ldc2_w: {

   826                     int indx = readUShortArg(byteCodes, i);

   827                     i += 2;

   828                     String v = encodeConstant(indx);

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

   830                     if (type == VarType.LONG) {

   831                         final Long lv = new Long(v);

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

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

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

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

   836                     } else {

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

   838                     }

   839                     break;

   840                 }

   841                 case opc_lcmp:

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

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

   844                     break;

   845                 case opc_fcmpl:

   846                 case opc_fcmpg:

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

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

   849                     break;

   850                 case opc_dcmpl:

   851                 case opc_dcmpg:

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

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

   854                     break;

   855                 case opc_if_acmpeq:

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

   857                                    "===", topMostLabel);

   858                     break;

   859                 case opc_if_acmpne:

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

   861                                    "!==", topMostLabel);

   862                     break;

   863                 case opc_if_icmpeq:

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

   865                                    "==", topMostLabel);

   866                     break;

   867                 case opc_ifeq: {

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

   869                     emitIf(smapper, out, "if (@1 == 0) ",

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

   871                     i += 2;

   872                     break;

   873                 }

   874                 case opc_ifne: {

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

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

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

   878                     i += 2;

   879                     break;

   880                 }

   881                 case opc_iflt: {

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

   883                     emitIf(smapper, out, "if (@1 < 0) ",

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

   885                     i += 2;

   886                     break;

   887                 }

   888                 case opc_ifle: {

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

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

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

   892                     i += 2;

   893                     break;

   894                 }

   895                 case opc_ifgt: {

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

   897                     emitIf(smapper, out, "if (@1 > 0) ",

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

   899                     i += 2;

   900                     break;

   901                 }

   902                 case opc_ifge: {

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

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

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

   906                     i += 2;

   907                     break;

   908                 }

   909                 case opc_ifnonnull: {

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

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

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

   913                     i += 2;

   914                     break;

   915                 }

   916                 case opc_ifnull: {

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

   918                     emitIf(smapper, out, "if (@1 === null) ",

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

   920                     i += 2;

   921                     break;

   922                 }

   923                 case opc_if_icmpne:

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

   925                                    "!=", topMostLabel);

   926                     break;

   927                 case opc_if_icmplt:

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

   929                                    "<", topMostLabel);

   930                     break;

   931                 case opc_if_icmple:

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

   933                                    "<=", topMostLabel);

   934                     break;

   935                 case opc_if_icmpgt:

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

   937                                    ">", topMostLabel);

   938                     break;

   939                 case opc_if_icmpge:

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

   941                                    ">=", topMostLabel);

   942                     break;

   943                 case opc_goto: {

   944                     smapper.flush(out);

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

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

   947                     i += 2;

   948                     break;

   949                 }

   950                 case opc_lookupswitch: {

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

   952                     break;

   953                 }

   954                 case opc_tableswitch: {

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

   956                     break;

   957                 }

   958                 case opc_invokeinterface: {

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

   960                     break;

   961                 }

   962                 case opc_invokevirtual:

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

   964                     break;

   965                 case opc_invokespecial:

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

   967                     break;

   968                 case opc_invokestatic:

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

   970                     break;

   971                 case opc_new: {

   972                     int indx = readUShortArg(byteCodes, i);

   973                     String ci = jc.getClassName(indx);

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

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

   976                     addReference(ci);

   977                     i += 2;

   978                     break;

   979                 }

   980                 case opc_newarray:

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

   982                     generateNewArray(atype, smapper);

   983                     break;

   984                 case opc_anewarray: {

   985                     int type = readUShortArg(byteCodes, i);

   986                     i += 2;

   987                     generateANewArray(type, smapper);

   988                     break;

   989                 }

   990                 case opc_multianewarray: {

   991                     int type = readUShortArg(byteCodes, i);

   992                     i += 2;

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

   994                     break;

   995                 }

   996                 case opc_arraylength:

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

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

   999                     break;

  1000                 case opc_lastore:

  1001                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1002                          smapper.popL(), smapper.popI(), smapper.popA());

  1003                     break;

  1004                 case opc_fastore:

  1005                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1006                          smapper.popF(), smapper.popI(), smapper.popA());

  1007                     break;

  1008                 case opc_dastore:

  1009                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1010                          smapper.popD(), smapper.popI(), smapper.popA());

  1011                     break;

  1012                 case opc_aastore:

  1013                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1014                          smapper.popA(), smapper.popI(), smapper.popA());

  1015                     break;

  1016                 case opc_iastore:

  1017                 case opc_bastore:

  1018                 case opc_castore:

  1019                 case opc_sastore:

  1020                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1021                          smapper.popI(), smapper.popI(), smapper.popA());

  1022                     break;

  1023                 case opc_laload:

  1024                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1025                          smapper.popI(), smapper.popA(), smapper.pushL());

  1026                     break;

  1027                 case opc_faload:

  1028                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1029                          smapper.popI(), smapper.popA(), smapper.pushF());

  1030                     break;

  1031                 case opc_daload:

  1032                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1033                          smapper.popI(), smapper.popA(), smapper.pushD());

  1034                     break;

  1035                 case opc_aaload:

  1036                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1037                          smapper.popI(), smapper.popA(), smapper.pushA());

  1038                     break;

  1039                 case opc_iaload:

  1040                 case opc_baload:

  1041                 case opc_caload:

  1042                 case opc_saload:

  1043                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

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

  1045                     break;

  1046                 case opc_pop:

  1047                 case opc_pop2:

  1048                     smapper.pop(1);

  1049                     debug("/* pop */");

  1050                     break;

  1051                 case opc_dup: {

  1052                     final Variable v = smapper.get(0);

  1053                     emit(smapper, out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1054                     break;

  1055                 }

  1056                 case opc_dup2: {

  1057                     final Variable vi1 = smapper.get(0);

  1059                     if (vi1.isCategory2()) {

  1060                         emit(smapper, out, "var @1 = @2;",

  1061                              smapper.pushT(vi1.getType()), vi1);

  1062                     } else {

  1063                         final Variable vi2 = smapper.get(1);

  1064                         emit(smapper, out, "var @1 = @2, @3 = @4;",

  1065                              smapper.pushT(vi2.getType()), vi2,

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

  1067                     }

  1068                     break;

  1069                 }

  1070                 case opc_dup_x1: {

  1071                     final Variable vi1 = smapper.pop(out);

  1072                     final Variable vi2 = smapper.pop(out);

  1073                     final Variable vo3 = smapper.pushT(vi1.getType());

  1074                     final Variable vo2 = smapper.pushT(vi2.getType());

  1075                     final Variable vo1 = smapper.pushT(vi1.getType());

  1077                     emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1078                          vo1, vi1, vo2, vi2, vo3, vo1);

  1079                     break;

  1080                 }

  1081                 case opc_dup2_x1: {

  1082                     final Variable vi1 = smapper.pop(out);

  1083                     final Variable vi2 = smapper.pop(out);

  1085                     if (vi1.isCategory2()) {

  1086                         final Variable vo3 = smapper.pushT(vi1.getType());

  1087                         final Variable vo2 = smapper.pushT(vi2.getType());

  1088                         final Variable vo1 = smapper.pushT(vi1.getType());

  1090                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1091                              vo1, vi1, vo2, vi2, vo3, vo1);

  1092                     } else {

  1093                         final Variable vi3 = smapper.pop(out);

  1094                         final Variable vo5 = smapper.pushT(vi2.getType());

  1095                         final Variable vo4 = smapper.pushT(vi1.getType());

  1096                         final Variable vo3 = smapper.pushT(vi3.getType());

  1097                         final Variable vo2 = smapper.pushT(vi2.getType());

  1098                         final Variable vo1 = smapper.pushT(vi1.getType());

  1100                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6,",

  1101                              vo1, vi1, vo2, vi2, vo3, vi3);

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

  1103                              vo4, vo1, vo5, vo2);

  1104                     }

  1105                     break;

  1106                 }

  1107                 case opc_dup_x2: {

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

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

  1111                     if (vi2.isCategory2()) {

  1112                         final Variable vo3 = smapper.pushT(vi1.getType());

  1113                         final Variable vo2 = smapper.pushT(vi2.getType());

  1114                         final Variable vo1 = smapper.pushT(vi1.getType());

  1116                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1117                              vo1, vi1, vo2, vi2, vo3, vo1);

  1118                     } else {

  1119                         final Variable vi3 = smapper.pop(out);

  1120                         final Variable vo4 = smapper.pushT(vi1.getType());

  1121                         final Variable vo3 = smapper.pushT(vi3.getType());

  1122                         final Variable vo2 = smapper.pushT(vi2.getType());

  1123                         final Variable vo1 = smapper.pushT(vi1.getType());

  1125                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1126                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1127                     }

  1128                     break;

  1129                 }

  1130                 case opc_dup2_x2: {

  1131                     final Variable vi1 = smapper.pop(out);

  1132                     final Variable vi2 = smapper.pop(out);

  1134                     if (vi1.isCategory2()) {

  1135                         if (vi2.isCategory2()) {

  1136                             final Variable vo3 = smapper.pushT(vi1.getType());

  1137                             final Variable vo2 = smapper.pushT(vi2.getType());

  1138                             final Variable vo1 = smapper.pushT(vi1.getType());

  1140                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1141                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1142                         } else {

  1143                             final Variable vi3 = smapper.pop(out);

  1144                             final Variable vo4 = smapper.pushT(vi1.getType());

  1145                             final Variable vo3 = smapper.pushT(vi3.getType());

  1146                             final Variable vo2 = smapper.pushT(vi2.getType());

  1147                             final Variable vo1 = smapper.pushT(vi1.getType());

  1149                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1150                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1151                         }

  1152                     } else {

  1153                         final Variable vi3 = smapper.pop(out);

  1155                         if (vi3.isCategory2()) {

  1156                             final Variable vo5 = smapper.pushT(vi2.getType());

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

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

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

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

  1162                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6,",

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

  1164                             emit(smapper, out, " @1 = @2, @3 = @4;",

  1165                                  vo4, vo1, vo5, vo2);

  1166                         } else {

  1167                             final Variable vi4 = smapper.pop(out);

  1168                             final Variable vo6 = smapper.pushT(vi2.getType());

  1169                             final Variable vo5 = smapper.pushT(vi1.getType());

  1170                             final Variable vo4 = smapper.pushT(vi4.getType());

  1171                             final Variable vo3 = smapper.pushT(vi3.getType());

  1172                             final Variable vo2 = smapper.pushT(vi2.getType());

  1173                             final Variable vo1 = smapper.pushT(vi1.getType());

  1175                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1176                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1177                             emit(smapper, out, " @1 = @2, @3 = @4;",

  1178                                  vo5, vo1, vo6, vo2);

  1179                         }

  1180                     }

  1181                     break;

  1182                 }

  1183                 case opc_swap: {

  1184                     final Variable vi1 = smapper.get(0);

  1185                     final Variable vi2 = smapper.get(1);

  1187                     if (vi1.getType() == vi2.getType()) {

  1188                         final Variable tmp = smapper.pushT(vi1.getType());

  1190                         emit(smapper, out, "var @1 = @2, @2 = @3, @3 = @1;",

  1191                              tmp, vi1, vi2);

  1192                         smapper.pop(1);

  1193                     } else {

  1194                         smapper.pop(2);

  1195                         smapper.pushT(vi1.getType());

  1196                         smapper.pushT(vi2.getType());

  1197                     }

  1198                     break;

  1199                 }

  1200                 case opc_bipush:

  1201                     emit(smapper, out, "var @1 = @2;",

  1202                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1203                     break;

  1204                 case opc_sipush:

  1205                     emit(smapper, out, "var @1 = @2;",

  1206                          smapper.pushI(),

  1207                          Integer.toString(readShortArg(byteCodes, i)));

  1208                     i += 2;

  1209                     break;

  1210                 case opc_getfield: {

  1211                     int indx = readUShortArg(byteCodes, i);

  1212                     String[] fi = jc.getFieldInfoName(indx);

  1213                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1214                     final String mangleClass = mangleClassName(fi[0]);

  1215                     final String mangleClassAccess = accessClass(mangleClass);

  1216                     emit(smapper, out, "var @2 = @4(false)._@3.call(@1);",

  1217                          smapper.popA(),

  1218                          smapper.pushT(type), fi[1], mangleClassAccess

  1219                     );

  1220                     i += 2;

  1221                     break;

  1222                 }

  1223                 case opc_putfield: {

  1224                     int indx = readUShortArg(byteCodes, i);

  1225                     String[] fi = jc.getFieldInfoName(indx);

  1226                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1227                     final String mangleClass = mangleClassName(fi[0]);

  1228                     final String mangleClassAccess = accessClass(mangleClass);

  1229                     emit(smapper, out, "@4(false)._@3.call(@2, @1);",

  1230                          smapper.popT(type),

  1231                          smapper.popA(), fi[1],

  1232                          mangleClassAccess

  1233                     );

  1234                     i += 2;

  1235                     break;

  1236                 }

  1237                 case opc_getstatic: {

  1238                     int indx = readUShortArg(byteCodes, i);

  1239                     String[] fi = jc.getFieldInfoName(indx);

  1240                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1241                     emit(smapper, out, "var @1 = @2(false)._@3();",

  1242                          smapper.pushT(type),

  1243                          accessClass(mangleClassName(fi[0])), fi[1]);

  1244                     i += 2;

  1245                     addReference(fi[0]);

  1246                     break;

  1247                 }

  1248                 case opc_putstatic: {

  1249                     int indx = readUShortArg(byteCodes, i);

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

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

  1252                     emit(smapper, out, "@1(false)._@2(@3);",

  1253                          accessClass(mangleClassName(fi[0])), fi[1],

  1254                          smapper.popT(type));

  1255                     i += 2;

  1256                     addReference(fi[0]);

  1257                     break;

  1258                 }

  1259                 case opc_checkcast: {

  1260                     int indx = readUShortArg(byteCodes, i);

  1261                     generateCheckcast(indx, smapper);

  1262                     i += 2;

  1263                     break;

  1264                 }

  1265                 case opc_instanceof: {

  1266                     int indx = readUShortArg(byteCodes, i);

  1267                     generateInstanceOf(indx, smapper);

  1268                     i += 2;

  1269                     break;

  1270                 }

  1271                 case opc_athrow: {

  1272                     final CharSequence v = smapper.popA();

  1273                     smapper.clear();

  1275                     emit(smapper, out, "{ var @1 = @2; throw @2; }",

  1276                          smapper.pushA(), v);

  1277                     break;

  1278                 }

  1280                 case opc_monitorenter: {

  1281                     out.append("/* monitor enter */");

  1282                     smapper.popA();

  1283                     break;

  1284                 }

  1286                 case opc_monitorexit: {

  1287                     out.append("/* monitor exit */");

  1288                     smapper.popA();

  1289                     break;

  1290                 }

  1292                 case opc_wide:

  1293                     wide = true;

  1294                     break;

  1296                 default: {

  1297                     wide = false;

  1298                     emit(smapper, out, "throw 'unknown bytecode @1';",

  1299                          Integer.toString(c));

  1300                 }

  1301             }

  1302             if (debug(" //")) {

  1303                 generateByteCodeComment(prev, i, byteCodes);

  1304             }

  1305             out.append("\n");

  1306         }

  1307         if (previousTrap != null) {

  1308             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1309         }

  1310         out.append("\n    }\n");

  1311         while (openBraces-- > 0) {

  1312             out.append('}');

  1313         }

  1314         out.append("\n};");

  1315     }

  1317     private int generateIf(byte[] byteCodes, int i, final CharSequence v2, final CharSequence v1, final String test, int topMostLabel) throws IOException {

  1318         int indx = i + readShortArg(byteCodes, i);

  1319         out.append("if (").append(v1)

  1320            .append(' ').append(test).append(' ')

  1321            .append(v2).append(") ");

  1322         goTo(out, i, indx, topMostLabel);

  1323         return i + 2;

  1324     }

  1326     private int readInt4(byte[] byteCodes, int offset) {

  1327         final int d = byteCodes[offset + 0] << 24;

  1328         final int c = byteCodes[offset + 1] << 16;

  1329         final int b = byteCodes[offset + 2] << 8;

  1330         final int a = byteCodes[offset + 3];

  1331         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1332     }

  1333     private static int readUByte(byte[] byteCodes, int offset) {

  1334         return byteCodes[offset] & 0xff;

  1335     }

  1337     private static int readUShort(byte[] byteCodes, int offset) {

  1338         return ((byteCodes[offset] & 0xff) << 8)

  1339                     | (byteCodes[offset + 1] & 0xff);

  1340     }

  1341     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1342         return readUShort(byteCodes, offsetInstruction + 1);

  1343     }

  1345     private static int readShort(byte[] byteCodes, int offset) {

  1346         int signed = byteCodes[offset];

  1347         byte b0 = (byte)signed;

  1348         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1349     }

  1350     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1351         return readShort(byteCodes, offsetInstruction + 1);

  1352     }

  1354     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1355         int i = 0;

  1356         Boolean count = null;

  1357         boolean array = false;

  1358         sig.append("__");

  1359         int firstPos = sig.length();

  1360         while (i < descriptor.length()) {

  1361             char ch = descriptor.charAt(i++);

  1362             switch (ch) {

  1363                 case '(':

  1364                     count = true;

  1365                     continue;

  1366                 case ')':

  1367                     count = false;

  1368                     continue;

  1369                 case 'B':

  1370                 case 'C':

  1371                 case 'D':

  1372                 case 'F':

  1373                 case 'I':

  1374                 case 'J':

  1375                 case 'S':

  1376                 case 'Z':

  1377                     if (count) {

  1378                         if (array) {

  1379                             sig.append("_3");

  1380                         }

  1381                         sig.append(ch);

  1382                         if (ch == 'J' || ch == 'D') {

  1383                             cnt.append('1');

  1384                         } else {

  1385                             cnt.append('0');

  1386                         }

  1387                     } else {

  1388                         sig.insert(firstPos, ch);

  1389                         if (array) {

  1390                             returnType[0] = '[';

  1391                             sig.insert(firstPos, "_3");

  1392                         } else {

  1393                             returnType[0] = ch;

  1394                         }

  1395                     }

  1396                     array = false;

  1397                     continue;

  1398                 case 'V':

  1399                     assert !count;

  1400                     returnType[0] = 'V';

  1401                     sig.insert(firstPos, 'V');

  1402                     continue;

  1403                 case 'L':

  1404                     int next = descriptor.indexOf(';', i);

  1405                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1406                     if (count) {

  1407                         if (array) {

  1408                             sig.append("_3");

  1409                         }

  1410                         sig.append(realSig);

  1411                         cnt.append('0');

  1412                     } else {

  1413                         sig.insert(firstPos, realSig);

  1414                         if (array) {

  1415                             sig.insert(firstPos, "_3");

  1416                         }

  1417                         returnType[0] = 'L';

  1418                     }

  1419                     i = next + 1;

  1420                     array = false;

  1421                     continue;

  1422                 case '[':

  1423                     array = true;

  1424                     continue;

  1425                 default:

  1426                     throw new IllegalStateException("Invalid char: " + ch);

  1427             }

  1428         }

  1429     }

  1431     static String mangleSig(String sig) {

  1432         return mangleSig(sig, 0, sig.length());

  1433     }

  1435     private static String mangleMethodName(String name) {

  1436         StringBuilder sb = new StringBuilder(name.length() * 2);

  1437         int last = name.length();

  1438         for (int i = 0; i < last; i++) {

  1439             final char ch = name.charAt(i);

  1440             switch (ch) {

  1441                 case '_': sb.append("_1"); break;

  1442                 default: sb.append(ch); break;

  1443             }

  1444         }

  1445         return sb.toString();

  1446     }

  1447     private static String mangleSig(String txt, int first, int last) {

  1448         StringBuilder sb = new StringBuilder((last - first) * 2);

  1449         for (int i = first; i < last; i++) {

  1450             final char ch = txt.charAt(i);

  1451             switch (ch) {

  1452                 case '/': sb.append('_'); break;

  1453                 case '_': sb.append("_1"); break;

  1454                 case ';': sb.append("_2"); break;

  1455                 case '[': sb.append("_3"); break;

  1456                 default: sb.append(ch); break;

  1457             }

  1458         }

  1459         return sb.toString();

  1460     }

  1462     private static String mangleClassName(String name) {

  1463         return mangleSig(name);

  1464     }

  1466     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1467         StringBuilder name = new StringBuilder();

  1468         if ("<init>".equals(m.getName())) { // NOI18N

  1469             name.append("cons"); // NOI18N

  1470         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1471             name.append("class"); // NOI18N

  1472         } else {

  1473             name.append(mangleMethodName(m.getName()));

  1474         }

  1476         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1477         return name.toString();

  1478     }

  1480     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1481         StringBuilder name = new StringBuilder();

  1482         String descr = mi[2];//mi.getDescriptor();

  1483         String nm= mi[1];

  1484         if ("<init>".equals(nm)) { // NOI18N

  1485             name.append("cons"); // NOI18N

  1486         } else {

  1487             name.append(mangleMethodName(nm));

  1488         }

  1489         countArgs(descr, returnType, name, cnt);

  1490         return name.toString();

  1491     }

  1493     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1494     throws IOException {

  1495         int methodIndex = readUShortArg(byteCodes, i);

  1496         String[] mi = jc.getFieldInfoName(methodIndex);

  1497         char[] returnType = { 'V' };

  1498         StringBuilder cnt = new StringBuilder();

  1499         String mn = findMethodName(mi, cnt, returnType);

  1501         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1502         final CharSequence[] vars = new CharSequence[numArguments];

  1504         for (int j = numArguments - 1; j >= 0; --j) {

  1505             vars[j] = mapper.popValue();

  1506         }

  1508         if (returnType[0] != 'V') {

  1509             out.append("var ")

  1510                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1511                .append(" = ");

  1512         }

  1514         final String in = mi[0];

  1515         out.append(accessClass(mangleClassName(in)));

  1516         out.append("(false).");

  1517         if (mn.startsWith("cons_")) {

  1518             out.append("constructor.");

  1519         }

  1520         out.append(mn);

  1521         if (isStatic) {

  1522             out.append('(');

  1523         } else {

  1524             out.append(".call(");

  1525         }

  1526         if (numArguments > 0) {

  1527             out.append(vars[0]);

  1528             for (int j = 1; j < numArguments; ++j) {

  1529                 out.append(", ");

  1530                 out.append(vars[j]);

  1531             }

  1532         }

  1533         out.append(");");

  1534         i += 2;

  1535         addReference(in);

  1536         return i;

  1537     }

  1538     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  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 = 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             out.append("var ")

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

  1556                .append(" = ");

  1557         }

  1559         out.append(vars[0]).append('.');

  1560         out.append(mn);

  1561         out.append('(');

  1562         String sep = "";

  1563         for (int j = 1; j < numArguments; ++j) {

  1564             out.append(sep);

  1565             out.append(vars[j]);

  1566             sep = ", ";

  1567         }

  1568         out.append(");");

  1569         i += 2;

  1570         return i;

  1571     }

  1573     private void addReference(String cn) throws IOException {

  1574         if (requireReference(cn)) {

  1575             debug(" /* needs " + cn + " */");

  1576         }

  1577     }

  1579     private void outType(String d, StringBuilder out) {

  1580         int arr = 0;

  1581         while (d.charAt(0) == '[') {

  1582             out.append('A');

  1583             d = d.substring(1);

  1584         }

  1585         if (d.charAt(0) == 'L') {

  1586             assert d.charAt(d.length() - 1) == ';';

  1587             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1588         } else {

  1589             out.append(d);

  1590         }

  1591     }

  1593     private String encodeConstant(int entryIndex) throws IOException {

  1594         String[] classRef = { null };

  1595         String s = jc.stringValue(entryIndex, classRef);

  1596         if (classRef[0] != null) {

  1597             if (classRef[0].startsWith("[")) {

  1598                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1599             } else {

  1600                 addReference(classRef[0]);

  1601                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1602             }

  1603         }

  1604         return s;

  1605     }

  1607     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1608         byte[] arr = m.findAnnotationData(true);

  1609         if (arr == null) {

  1610             return null;

  1611         }

  1612         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1613         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1614         class P extends AnnotationParser {

  1615             public P() {

  1616                 super(false, true);

  1617             }

  1619             int cnt;

  1620             String[] args = new String[30];

  1621             String body;

  1622             boolean javacall;

  1623             boolean html4j;

  1625             @Override

  1626             protected void visitAttr(String type, String attr, String at, String value) {

  1627                 if (type.equals(jvmType)) {

  1628                     if ("body".equals(attr)) {

  1629                         body = value;

  1630                     } else if ("args".equals(attr)) {

  1631                         args[cnt++] = value;

  1632                     } else {

  1633                         throw new IllegalArgumentException(attr);

  1634                     }

  1635                 }

  1636                 if (type.equals(htmlType)) {

  1637                     html4j = true;

  1638                     if ("body".equals(attr)) {

  1639                         body = value;

  1640                     } else if ("args".equals(attr)) {

  1641                         args[cnt++] = value;

  1642                     } else if ("javacall".equals(attr)) {

  1643                         javacall = "1".equals(value);

  1644                     } else {

  1645                         throw new IllegalArgumentException(attr);

  1646                     }

  1647                 }

  1648             }

  1649         }

  1650         P p = new P();

  1651         p.parse(arr, jc);

  1652         if (p.body == null) {

  1653             return null;

  1654         }

  1655         StringBuilder cnt = new StringBuilder();

  1656         final String mn = findMethodName(m, cnt);

  1657         out.append(destObject).append(".").append(mn);

  1658         out.append(" = function(");

  1659         String space = "";

  1660         int index = 0;

  1661         StringBuilder toValue = new StringBuilder();

  1662         for (int i = 0; i < cnt.length(); i++) {

  1663             out.append(space);

  1664             space = outputArg(out, p.args, index);

  1665             if (p.html4j && space.length() > 0) {

  1666                 toValue.append("\n  ").append(p.args[index]).append(" = vm.org_apidesign_bck2brwsr_emul_lang_System(false).toJS(").

  1667                     append(p.args[index]).append(");");

  1668             }

  1669             index++;

  1670         }

  1671         out.append(") {").append("\n");

  1672         out.append(toValue.toString());

  1673         if (p.javacall) {

  1674             int lastSlash = jc.getClassName().lastIndexOf('/');

  1675             final String pkg = jc.getClassName().substring(0, lastSlash);

  1676             out.append(mangleCallbacks(pkg, p.body));

  1677             requireReference(pkg + "/$JsCallbacks$");

  1678         } else {

  1679             out.append(p.body);

  1680         }

  1681         out.append("\n}\n");

  1682         return mn;

  1683     }

  1685     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1686         StringBuilder sb = new StringBuilder();

  1687         int pos = 0;

  1688         for (;;) {

  1689             int next = body.indexOf(".@", pos);

  1690             if (next == -1) {

  1691                 sb.append(body.substring(pos));

  1692                 body = sb.toString();

  1693                 break;

  1694             }

  1695             int ident = next;

  1696             while (ident > 0) {

  1697                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1698                     ident++;

  1699                     break;

  1700                 }

  1701             }

  1702             String refId = body.substring(ident, next);

  1704             sb.append(body.substring(pos, ident));

  1706             int sigBeg = body.indexOf('(', next);

  1707             int sigEnd = body.indexOf(')', sigBeg);

  1708             int colon4 = body.indexOf("::", next);

  1709             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1710                 throw new IllegalStateException("Malformed body " + body);

  1711             }

  1712             String fqn = body.substring(next + 2, colon4);

  1713             String method = body.substring(colon4 + 2, sigBeg);

  1714             String params = body.substring(sigBeg, sigEnd + 1);

  1716             int paramBeg = body.indexOf('(', sigEnd + 1);

  1718             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1719             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1720             sb.append("(").append(refId);

  1721             if (body.charAt(paramBeg + 1) != ')') {

  1722                 sb.append(",");

  1723             }

  1724             pos = paramBeg + 1;

  1725         }

  1726         sb = null;

  1727         pos = 0;

  1728         for (;;) {

  1729             int next = body.indexOf("@", pos);

  1730             if (next == -1) {

  1731                 if (sb == null) {

  1732                     return body;

  1733                 }

  1734                 sb.append(body.substring(pos));

  1735                 return sb;

  1736             }

  1737             if (sb == null) {

  1738                 sb = new StringBuilder();

  1739             }

  1741             sb.append(body.substring(pos, next));

  1743             int sigBeg = body.indexOf('(', next);

  1744             int sigEnd = body.indexOf(')', sigBeg);

  1745             int colon4 = body.indexOf("::", next);

  1746             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1747                 throw new IllegalStateException("Malformed body " + body);

  1748             }

  1749             String fqn = body.substring(next + 1, colon4);

  1750             String method = body.substring(colon4 + 2, sigBeg);

  1751             String params = body.substring(sigBeg, sigEnd + 1);

  1753             int paramBeg = body.indexOf('(', sigEnd + 1);

  1755             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1756             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1757             sb.append("(");

  1758             pos = paramBeg + 1;

  1759         }

  1760     }

  1762     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1763         if (params.startsWith("(")) {

  1764             params = params.substring(1);

  1765         }

  1766         if (params.endsWith(")")) {

  1767             params = params.substring(0, params.length() - 1);

  1768         }

  1769         StringBuilder sb = new StringBuilder();

  1770         final String fqnu = fqn.replace('.', '_');

  1771         final String rfqn = mangleClassName(fqnu);

  1772         final String rm = mangleMethodName(method);

  1773         final String srp;

  1774         {

  1775             StringBuilder pb = new StringBuilder();

  1776             int len = params.length();

  1777             int indx = 0;

  1778             while (indx < len) {

  1779                 char ch = params.charAt(indx);

  1780                 if (ch == '[' || ch == 'L') {

  1781                     pb.append("Ljava/lang/Object;");

  1782                     indx = params.indexOf(';', indx) + 1;

  1783                 } else {

  1784                     pb.append(ch);

  1785                     indx++;

  1786                 }

  1787             }

  1788             srp = mangleSig(pb.toString());

  1789         }

  1790         final String rp = mangleSig(params);

  1791         final String mrp = mangleMethodName(rp);

  1792         sb.append(rfqn).append("$").append(rm).

  1793             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1794         if (!isStatic) {

  1795             sb.append('L').append(fqnu).append("_2");

  1796         }

  1797         sb.append(srp);

  1798         return sb.toString();

  1799     }

  1801     private static String className(ClassData jc) {

  1802         //return jc.getName().getInternalName().replace('/', '_');

  1803         return mangleClassName(jc.getClassName());

  1804     }

  1806     private static String[] findAnnotation(

  1807         byte[] arr, ClassData cd, final String className,

  1808         final String... attrNames

  1809     ) throws IOException {

  1810         if (arr == null) {

  1811             return null;

  1812         }

  1813         final String[] values = new String[attrNames.length];

  1814         final boolean[] found = { false };

  1815         final String jvmType = "L" + className.replace('.', '/') + ";";

  1816         AnnotationParser ap = new AnnotationParser(false, true) {

  1817             @Override

  1818             protected void visitAttr(String type, String attr, String at, String value) {

  1819                 if (type.equals(jvmType)) {

  1820                     found[0] = true;

  1821                     for (int i = 0; i < attrNames.length; i++) {

  1822                         if (attrNames[i].equals(attr)) {

  1823                             values[i] = value;

  1824                         }

  1825                     }

  1826                 }

  1827             }

  1829         };

  1830         ap.parse(arr, cd);

  1831         return found[0] ? values : null;

  1832     }

  1834     private CharSequence initField(FieldData v) {

  1835         final String is = v.getInternalSig();

  1836         if (is.length() == 1) {

  1837             switch (is.charAt(0)) {

  1838                 case 'S':

  1839                 case 'J':

  1840                 case 'B':

  1841                 case 'Z':

  1842                 case 'C':

  1843                 case 'I': return " = 0;";

  1844                 case 'F':

  1845                 case 'D': return " = 0.0;";

  1846                 default:

  1847                     throw new IllegalStateException(is);

  1848             }

  1849         }

  1850         return " = null;";

  1851     }

  1853     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1854         AnnotationParser ap = new AnnotationParser(true, false) {

  1855             int[] cnt = new int[32];

  1856             int depth;

  1858             @Override

  1859             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1860                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1861                 requireReference(slashType);

  1863                 if (cnt[depth]++ > 0) {

  1864                     out.append(",");

  1865                 }

  1866                 if (top) {

  1867                     out.append('"').append(attrType).append("\" : ");

  1868                 }

  1869                 out.append("{\n");

  1870                 cnt[++depth] = 0;

  1871             }

  1873             @Override

  1874             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1875                 out.append("\n}\n");

  1876                 depth--;

  1877             }

  1879             @Override

  1880             protected void visitValueStart(String attrName, char type) throws IOException {

  1881                 if (cnt[depth]++ > 0) {

  1882                     out.append(",\n");

  1883                 }

  1884                 cnt[++depth] = 0;

  1885                 if (attrName != null) {

  1886                     out.append(attrName).append(" : ");

  1887                 }

  1888                 if (type == '[') {

  1889                     out.append("[");

  1890                 }

  1891             }

  1893             @Override

  1894             protected void visitValueEnd(String attrName, char type) throws IOException {

  1895                 if (type == '[') {

  1896                     out.append("]");

  1897                 }

  1898                 depth--;

  1899             }

  1901             @Override

  1902             protected void visitAttr(String type, String attr, String attrType, String value)

  1903             throws IOException {

  1904                 if (attr == null && value == null) {

  1905                     return;

  1906                 }

  1907                 out.append(value);

  1908             }

  1910             @Override

  1911             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1912             throws IOException {

  1913                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1914                 requireReference(slashType);

  1916                 out.append(accessClass(mangleClassName(slashType)))

  1917                    .append("(false).constructor.fld_").append(value);

  1918             }

  1919         };

  1920         ap.parse(data, cd);

  1921     }

  1923     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1924         final String name = args[indx];

  1925         if (name == null) {

  1926             return "";

  1927         }

  1928         if (name.contains(",")) {

  1929             throw new IOException("Wrong parameter with ',': " + name);

  1930         }

  1931         out.append(name);

  1932         return ",";

  1933     }

  1935     final void emit(

  1936         StackMapper sm,

  1937         final Appendable out,

  1938         final String format, final CharSequence... params

  1939     ) throws IOException {

  1940         sm.flush(out);

  1941         emitImpl(out, format, params);

  1942     }

  1943     static void emitImpl(final Appendable out,

  1944                              final String format,

  1945                              final CharSequence... params) throws IOException {

  1946         final int length = format.length();

  1948         int processed = 0;

  1949         int paramOffset = format.indexOf('@');

  1950         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1951             final char paramChar = format.charAt(paramOffset + 1);

  1952             if ((paramChar >= '1') && (paramChar <= '9')) {

  1953                 final int paramIndex = paramChar - '0' - 1;

  1955                 out.append(format, processed, paramOffset);

  1956                 out.append(params[paramIndex]);

  1958                 ++paramOffset;

  1959                 processed = paramOffset + 1;

  1960             }

  1962             paramOffset = format.indexOf('@', paramOffset + 1);

  1963         }

  1965         out.append(format, processed, length);

  1966     }

  1968     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1969         out.append("} catch (e) {\n");

  1970         int finallyPC = -1;

  1971         for (TrapData e : traps) {

  1972             if (e == null) {

  1973                 break;

  1974             }

  1975             if (e.catch_cpx != 0) { //not finally

  1976                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1977                 addReference(classInternalName);

  1978                 out.append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  1979                 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1980                 out.append("var stA0 = e;");

  1981                 goTo(out, current, e.handler_pc, topMostLabel);

  1982                 out.append("}\n");

  1983             } else {

  1984                 finallyPC = e.handler_pc;

  1985             }

  1986         }

  1987         if (finallyPC == -1) {

  1988             out.append("throw e;");

  1989         } else {

  1990             out.append("var stA0 = e;");

  1991             goTo(out, current, finallyPC, topMostLabel);

  1992         }

  1993         out.append("\n}");

  1994     }

  1996     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1997         if (to < current) {

  1998             if (canBack < to) {

  1999                 out.append("{ gt = 0; continue X_" + to + "; }");

  2000             } else {

  2001                 out.append("{ gt = " + to + "; continue X_0; }");

  2002             }

  2003         } else {

  2004             out.append("{ gt = " + to + "; break IF; }");

  2005         }

  2006     }

  2008     private static void emitIf(

  2009         StackMapper sm,

  2010         Appendable out, String pattern,

  2011         CharSequence param,

  2012         int current, int to, int canBack

  2013     ) throws IOException {

  2014         sm.flush(out);

  2015         emitImpl(out, pattern, param);

  2016         goTo(out, current, to, canBack);

  2017     }

  2019     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2020         String jvmType;

  2021         switch (atype) {

  2022             case 4: jvmType = "[Z"; break;

  2023             case 5: jvmType = "[C"; break;

  2024             case 6: jvmType = "[F"; break;

  2025             case 7: jvmType = "[D"; break;

  2026             case 8: jvmType = "[B"; break;

  2027             case 9: jvmType = "[S"; break;

  2028             case 10: jvmType = "[I"; break;

  2029             case 11: jvmType = "[J"; break;

  2030             default: throw new IllegalStateException("Array type: " + atype);

  2031         }

  2032         emit(smapper, out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  2033              smapper.popI(), smapper.pushA(), jvmType);

  2034     }

  2036     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2037         String typeName = jc.getClassName(type);

  2038         if (typeName.startsWith("[")) {

  2039             typeName = "[" + typeName;

  2040         } else {

  2041             typeName = "[L" + typeName + ";";

  2042         }

  2043         emit(smapper, out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  2044              smapper.popI(), smapper.pushA(), typeName);

  2045     }

  2047     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2048         String typeName = jc.getClassName(type);

  2049         int dim = readUByte(byteCodes, ++i);

  2050         StringBuilder dims = new StringBuilder();

  2051         dims.append('[');

  2052         for (int d = 0; d < dim; d++) {

  2053             if (d != 0) {

  2054                 dims.insert(1, ",");

  2055             }

  2056             dims.insert(1, smapper.popI());

  2057         }

  2058         dims.append(']');

  2059         emit(smapper, out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  2060              dims.toString(), smapper.pushA(), typeName);

  2061         return i;

  2062     }

  2064     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2065         int table = i / 4 * 4 + 4;

  2066         int dflt = i + readInt4(byteCodes, table);

  2067         table += 4;

  2068         int low = readInt4(byteCodes, table);

  2069         table += 4;

  2070         int high = readInt4(byteCodes, table);

  2071         table += 4;

  2072         out.append("switch (").append(smapper.popI()).append(") {\n");

  2073         while (low <= high) {

  2074             int offset = i + readInt4(byteCodes, table);

  2075             table += 4;

  2076             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  2077             low++;

  2078         }

  2079         out.append("  default: ");

  2080         goTo(out, i, dflt, topMostLabel);

  2081         out.append("\n}");

  2082         i = table - 1;

  2083         return i;

  2084     }

  2086     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2087         int table = i / 4 * 4 + 4;

  2088         int dflt = i + readInt4(byteCodes, table);

  2089         table += 4;

  2090         int n = readInt4(byteCodes, table);

  2091         table += 4;

  2092         out.append("switch (").append(smapper.popI()).append(") {\n");

  2093         while (n-- > 0) {

  2094             int cnstnt = readInt4(byteCodes, table);

  2095             table += 4;

  2096             int offset = i + readInt4(byteCodes, table);

  2097             table += 4;

  2098             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  2099         }

  2100         out.append("  default: ");

  2101         goTo(out, i, dflt, topMostLabel);

  2102         out.append("\n}");

  2103         i = table - 1;

  2104         return i;

  2105     }

  2107     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2108         final String type = jc.getClassName(indx);

  2109         if (!type.startsWith("[")) {

  2110             emit(smapper, out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  2111                  smapper.popA(), smapper.pushI(),

  2112                  type.replace('/', '_'));

  2113         } else {

  2114             emit(smapper, out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  2115                 smapper.popA(), smapper.pushI(),

  2116                 type

  2117             );

  2118         }

  2119     }

  2121     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2122         final String type = jc.getClassName(indx);

  2123         if (!type.startsWith("[")) {

  2124             emit(smapper, out,

  2125                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  2126                  smapper.getA(0), type.replace('/', '_'));

  2127         } else {

  2128             emit(smapper, out, "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@2').cast__Ljava_lang_Object_2Ljava_lang_Object_2(@1);",

  2129                  smapper.getA(0), type

  2130             );

  2131         }

  2132     }

  2134     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2135         for (int j = prev; j <= i; j++) {

  2136             out.append(" ");

  2137             final int cc = readUByte(byteCodes, j);

  2138             out.append(Integer.toString(cc));

  2139         }

  2140     }

  2141 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sat, 15 Feb 2014 23:16:11 +0100
branch	ReducedStack
changeset 1459	6575d1848af3
parent 1458	5c8caf0ba8b8
child 1462	1e7ff3ba3666
permissions	-rw-r--r--