hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@15c1110da559

     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                         if (hi == 0) {

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

   836                         } else {

   837                             smapper.assign(out, VarType.LONG,

   838                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   839                                     Integer.toHexString(low) + ")"

   840                             );

   841                         }

   842                     } else {

   843                         smapper.assign(out, type, v);

   844                     }

   845                     break;

   846                 }

   847                 case opc_lcmp:

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

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

   850                     break;

   851                 case opc_fcmpl:

   852                 case opc_fcmpg:

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

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

   855                     break;

   856                 case opc_dcmpl:

   857                 case opc_dcmpg:

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

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

   860                     break;

   861                 case opc_if_acmpeq:

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

   863                                    "===", topMostLabel);

   864                     break;

   865                 case opc_if_acmpne:

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

   867                                    "!==", topMostLabel);

   868                     break;

   869                 case opc_if_icmpeq:

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

   871                                    "==", topMostLabel);

   872                     break;

   873                 case opc_ifeq: {

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

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

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

   877                     i += 2;

   878                     break;

   879                 }

   880                 case opc_ifne: {

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

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

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

   884                     i += 2;

   885                     break;

   886                 }

   887                 case opc_iflt: {

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

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

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

   891                     i += 2;

   892                     break;

   893                 }

   894                 case opc_ifle: {

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

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

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

   898                     i += 2;

   899                     break;

   900                 }

   901                 case opc_ifgt: {

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

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

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

   905                     i += 2;

   906                     break;

   907                 }

   908                 case opc_ifge: {

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

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

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

   912                     i += 2;

   913                     break;

   914                 }

   915                 case opc_ifnonnull: {

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

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

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

   919                     i += 2;

   920                     break;

   921                 }

   922                 case opc_ifnull: {

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

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

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

   926                     i += 2;

   927                     break;

   928                 }

   929                 case opc_if_icmpne:

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

   931                                    "!=", topMostLabel);

   932                     break;

   933                 case opc_if_icmplt:

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

   935                                    "<", topMostLabel);

   936                     break;

   937                 case opc_if_icmple:

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

   939                                    "<=", topMostLabel);

   940                     break;

   941                 case opc_if_icmpgt:

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

   943                                    ">", topMostLabel);

   944                     break;

   945                 case opc_if_icmpge:

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

   947                                    ">=", topMostLabel);

   948                     break;

   949                 case opc_goto: {

   950                     smapper.flush(out);

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

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

   953                     i += 2;

   954                     break;

   955                 }

   956                 case opc_lookupswitch: {

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

   958                     break;

   959                 }

   960                 case opc_tableswitch: {

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

   962                     break;

   963                 }

   964                 case opc_invokeinterface: {

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

   966                     break;

   967                 }

   968                 case opc_invokevirtual:

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

   970                     break;

   971                 case opc_invokespecial:

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

   973                     break;

   974                 case opc_invokestatic:

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

   976                     break;

   977                 case opc_new: {

   978                     int indx = readUShortArg(byteCodes, i);

   979                     String ci = jc.getClassName(indx);

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

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

   982                     addReference(ci);

   983                     i += 2;

   984                     break;

   985                 }

   986                 case opc_newarray:

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

   988                     generateNewArray(atype, smapper);

   989                     break;

   990                 case opc_anewarray: {

   991                     int type = readUShortArg(byteCodes, i);

   992                     i += 2;

   993                     generateANewArray(type, smapper);

   994                     break;

   995                 }

   996                 case opc_multianewarray: {

   997                     int type = readUShortArg(byteCodes, i);

   998                     i += 2;

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

  1000                     break;

  1001                 }

  1002                 case opc_arraylength:

  1003                     emit(smapper, out, "var @2 = @1.length;",

  1004                          smapper.popA(), smapper.pushI());

  1005                     break;

  1006                 case opc_lastore:

  1007                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1008                          smapper.popL(), smapper.popI(), smapper.popA());

  1009                     break;

  1010                 case opc_fastore:

  1011                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1012                          smapper.popF(), smapper.popI(), smapper.popA());

  1013                     break;

  1014                 case opc_dastore:

  1015                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1016                          smapper.popD(), smapper.popI(), smapper.popA());

  1017                     break;

  1018                 case opc_aastore:

  1019                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1020                          smapper.popA(), smapper.popI(), smapper.popA());

  1021                     break;

  1022                 case opc_iastore:

  1023                 case opc_bastore:

  1024                 case opc_castore:

  1025                 case opc_sastore:

  1026                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1027                          smapper.popI(), smapper.popI(), smapper.popA());

  1028                     break;

  1029                 case opc_laload:

  1030                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1031                          smapper.popI(), smapper.popA(), smapper.pushL());

  1032                     break;

  1033                 case opc_faload:

  1034                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1035                          smapper.popI(), smapper.popA(), smapper.pushF());

  1036                     break;

  1037                 case opc_daload:

  1038                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

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

  1040                     break;

  1041                 case opc_aaload:

  1042                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

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

  1044                     break;

  1045                 case opc_iaload:

  1046                 case opc_baload:

  1047                 case opc_caload:

  1048                 case opc_saload:

  1049                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1050                          smapper.popI(), smapper.popA(), smapper.pushI());

  1051                     break;

  1052                 case opc_pop:

  1053                 case opc_pop2:

  1054                     smapper.pop(1);

  1055                     debug("/* pop */");

  1056                     break;

  1057                 case opc_dup: {

  1058                     final Variable v = smapper.get(0);

  1059                     emit(smapper, out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1060                     break;

  1061                 }

  1062                 case opc_dup2: {

  1063                     final Variable vi1 = smapper.get(0);

  1065                     if (vi1.isCategory2()) {

  1066                         emit(smapper, out, "var @1 = @2;",

  1067                              smapper.pushT(vi1.getType()), vi1);

  1068                     } else {

  1069                         final Variable vi2 = smapper.get(1);

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

  1071                              smapper.pushT(vi2.getType()), vi2,

  1072                              smapper.pushT(vi1.getType()), vi1);

  1073                     }

  1074                     break;

  1075                 }

  1076                 case opc_dup_x1: {

  1077                     final Variable vi1 = smapper.pop(out);

  1078                     final Variable vi2 = smapper.pop(out);

  1079                     final Variable vo3 = smapper.pushT(vi1.getType());

  1080                     final Variable vo2 = smapper.pushT(vi2.getType());

  1081                     final Variable vo1 = smapper.pushT(vi1.getType());

  1083                     emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1084                          vo1, vi1, vo2, vi2, vo3, vo1);

  1085                     break;

  1086                 }

  1087                 case opc_dup2_x1: {

  1088                     final Variable vi1 = smapper.pop(out);

  1089                     final Variable vi2 = smapper.pop(out);

  1091                     if (vi1.isCategory2()) {

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

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

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

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

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

  1098                     } else {

  1099                         final Variable vi3 = smapper.pop(out);

  1100                         final Variable vo5 = smapper.pushT(vi2.getType());

  1101                         final Variable vo4 = smapper.pushT(vi1.getType());

  1102                         final Variable vo3 = smapper.pushT(vi3.getType());

  1103                         final Variable vo2 = smapper.pushT(vi2.getType());

  1104                         final Variable vo1 = smapper.pushT(vi1.getType());

  1106                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6,",

  1107                              vo1, vi1, vo2, vi2, vo3, vi3);

  1108                         emit(smapper, out, " @1 = @2, @3 = @4;",

  1109                              vo4, vo1, vo5, vo2);

  1110                     }

  1111                     break;

  1112                 }

  1113                 case opc_dup_x2: {

  1114                     final Variable vi1 = smapper.pop(out);

  1115                     final Variable vi2 = smapper.pop(out);

  1117                     if (vi2.isCategory2()) {

  1118                         final Variable vo3 = smapper.pushT(vi1.getType());

  1119                         final Variable vo2 = smapper.pushT(vi2.getType());

  1120                         final Variable vo1 = smapper.pushT(vi1.getType());

  1122                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1123                              vo1, vi1, vo2, vi2, vo3, vo1);

  1124                     } else {

  1125                         final Variable vi3 = smapper.pop(out);

  1126                         final Variable vo4 = smapper.pushT(vi1.getType());

  1127                         final Variable vo3 = smapper.pushT(vi3.getType());

  1128                         final Variable vo2 = smapper.pushT(vi2.getType());

  1129                         final Variable vo1 = smapper.pushT(vi1.getType());

  1131                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1132                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1133                     }

  1134                     break;

  1135                 }

  1136                 case opc_dup2_x2: {

  1137                     final Variable vi1 = smapper.pop(out);

  1138                     final Variable vi2 = smapper.pop(out);

  1140                     if (vi1.isCategory2()) {

  1141                         if (vi2.isCategory2()) {

  1142                             final Variable vo3 = smapper.pushT(vi1.getType());

  1143                             final Variable vo2 = smapper.pushT(vi2.getType());

  1144                             final Variable vo1 = smapper.pushT(vi1.getType());

  1146                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1147                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1148                         } else {

  1149                             final Variable vi3 = smapper.pop(out);

  1150                             final Variable vo4 = smapper.pushT(vi1.getType());

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

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

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

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

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

  1157                         }

  1158                     } else {

  1159                         final Variable vi3 = smapper.pop(out);

  1161                         if (vi3.isCategory2()) {

  1162                             final Variable vo5 = smapper.pushT(vi2.getType());

  1163                             final Variable vo4 = smapper.pushT(vi1.getType());

  1164                             final Variable vo3 = smapper.pushT(vi3.getType());

  1165                             final Variable vo2 = smapper.pushT(vi2.getType());

  1166                             final Variable vo1 = smapper.pushT(vi1.getType());

  1168                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6,",

  1169                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1170                             emit(smapper, out, " @1 = @2, @3 = @4;",

  1171                                  vo4, vo1, vo5, vo2);

  1172                         } else {

  1173                             final Variable vi4 = smapper.pop(out);

  1174                             final Variable vo6 = smapper.pushT(vi2.getType());

  1175                             final Variable vo5 = smapper.pushT(vi1.getType());

  1176                             final Variable vo4 = smapper.pushT(vi4.getType());

  1177                             final Variable vo3 = smapper.pushT(vi3.getType());

  1178                             final Variable vo2 = smapper.pushT(vi2.getType());

  1179                             final Variable vo1 = smapper.pushT(vi1.getType());

  1181                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1182                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1183                             emit(smapper, out, " @1 = @2, @3 = @4;",

  1184                                  vo5, vo1, vo6, vo2);

  1185                         }

  1186                     }

  1187                     break;

  1188                 }

  1189                 case opc_swap: {

  1190                     final Variable vi1 = smapper.get(0);

  1191                     final Variable vi2 = smapper.get(1);

  1193                     if (vi1.getType() == vi2.getType()) {

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

  1196                         emit(smapper, out, "var @1 = @2, @2 = @3, @3 = @1;",

  1197                              tmp, vi1, vi2);

  1198                         smapper.pop(1);

  1199                     } else {

  1200                         smapper.pop(2);

  1201                         smapper.pushT(vi1.getType());

  1202                         smapper.pushT(vi2.getType());

  1203                     }

  1204                     break;

  1205                 }

  1206                 case opc_bipush:

  1207                     smapper.assign(out, VarType.INTEGER,

  1208                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1209                     break;

  1210                 case opc_sipush:

  1211                     smapper.assign(out, VarType.INTEGER,

  1212                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1213                     );

  1214                     i += 2;

  1215                     break;

  1216                 case opc_getfield: {

  1217                     int indx = readUShortArg(byteCodes, i);

  1218                     String[] fi = jc.getFieldInfoName(indx);

  1219                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1220                     final String mangleClass = mangleClassName(fi[0]);

  1221                     final String mangleClassAccess = accessClass(mangleClass);

  1222                     emit(smapper, out, "var @2 = @4(false)._@3.call(@1);",

  1223                          smapper.popA(),

  1224                          smapper.pushT(type), fi[1], mangleClassAccess

  1225                     );

  1226                     i += 2;

  1227                     break;

  1228                 }

  1229                 case opc_putfield: {

  1230                     int indx = readUShortArg(byteCodes, i);

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

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

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

  1234                     final String mangleClassAccess = accessClass(mangleClass);

  1235                     emit(smapper, out, "@4(false)._@3.call(@2, @1);",

  1236                          smapper.popT(type),

  1237                          smapper.popA(), fi[1],

  1238                          mangleClassAccess

  1239                     );

  1240                     i += 2;

  1241                     break;

  1242                 }

  1243                 case opc_getstatic: {

  1244                     int indx = readUShortArg(byteCodes, i);

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

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

  1247                     emit(smapper, out, "var @1 = @2(false)._@3();",

  1248                          smapper.pushT(type),

  1249                          accessClass(mangleClassName(fi[0])), fi[1]);

  1250                     i += 2;

  1251                     addReference(fi[0]);

  1252                     break;

  1253                 }

  1254                 case opc_putstatic: {

  1255                     int indx = readUShortArg(byteCodes, i);

  1256                     String[] fi = jc.getFieldInfoName(indx);

  1257                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1258                     emit(smapper, out, "@1(false)._@2(@3);",

  1259                          accessClass(mangleClassName(fi[0])), fi[1],

  1260                          smapper.popT(type));

  1261                     i += 2;

  1262                     addReference(fi[0]);

  1263                     break;

  1264                 }

  1265                 case opc_checkcast: {

  1266                     int indx = readUShortArg(byteCodes, i);

  1267                     generateCheckcast(indx, smapper);

  1268                     i += 2;

  1269                     break;

  1270                 }

  1271                 case opc_instanceof: {

  1272                     int indx = readUShortArg(byteCodes, i);

  1273                     generateInstanceOf(indx, smapper);

  1274                     i += 2;

  1275                     break;

  1276                 }

  1277                 case opc_athrow: {

  1278                     final CharSequence v = smapper.popA();

  1279                     smapper.clear();

  1281                     emit(smapper, out, "{ var @1 = @2; throw @2; }",

  1282                          smapper.pushA(), v);

  1283                     break;

  1284                 }

  1286                 case opc_monitorenter: {

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

  1288                     smapper.popA();

  1289                     break;

  1290                 }

  1292                 case opc_monitorexit: {

  1293                     out.append("/* monitor exit */");

  1294                     smapper.popA();

  1295                     break;

  1296                 }

  1298                 case opc_wide:

  1299                     wide = true;

  1300                     break;

  1302                 default: {

  1303                     wide = false;

  1304                     emit(smapper, out, "throw 'unknown bytecode @1';",

  1305                          Integer.toString(c));

  1306                 }

  1307             }

  1308             if (debug(" //")) {

  1309                 generateByteCodeComment(prev, i, byteCodes);

  1310             }

  1311             out.append("\n");

  1312         }

  1313         if (previousTrap != null) {

  1314             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1315         }

  1316         out.append("\n    }\n");

  1317         while (openBraces-- > 0) {

  1318             out.append('}');

  1319         }

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

  1321     }

  1323     private int generateIf(byte[] byteCodes, int i, final CharSequence v2, final CharSequence v1, final String test, int topMostLabel) throws IOException {

  1324         int indx = i + readShortArg(byteCodes, i);

  1325         out.append("if (").append(v1)

  1326            .append(' ').append(test).append(' ')

  1327            .append(v2).append(") ");

  1328         goTo(out, i, indx, topMostLabel);

  1329         return i + 2;

  1330     }

  1332     private int readInt4(byte[] byteCodes, int offset) {

  1333         final int d = byteCodes[offset + 0] << 24;

  1334         final int c = byteCodes[offset + 1] << 16;

  1335         final int b = byteCodes[offset + 2] << 8;

  1336         final int a = byteCodes[offset + 3];

  1337         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1338     }

  1339     private static int readUByte(byte[] byteCodes, int offset) {

  1340         return byteCodes[offset] & 0xff;

  1341     }

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

  1344         return ((byteCodes[offset] & 0xff) << 8)

  1345                     | (byteCodes[offset + 1] & 0xff);

  1346     }

  1347     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1348         return readUShort(byteCodes, offsetInstruction + 1);

  1349     }

  1351     private static int readShort(byte[] byteCodes, int offset) {

  1352         int signed = byteCodes[offset];

  1353         byte b0 = (byte)signed;

  1354         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1355     }

  1356     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1357         return readShort(byteCodes, offsetInstruction + 1);

  1358     }

  1360     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1361         int i = 0;

  1362         Boolean count = null;

  1363         boolean array = false;

  1364         sig.append("__");

  1365         int firstPos = sig.length();

  1366         while (i < descriptor.length()) {

  1367             char ch = descriptor.charAt(i++);

  1368             switch (ch) {

  1369                 case '(':

  1370                     count = true;

  1371                     continue;

  1372                 case ')':

  1373                     count = false;

  1374                     continue;

  1375                 case 'B':

  1376                 case 'C':

  1377                 case 'D':

  1378                 case 'F':

  1379                 case 'I':

  1380                 case 'J':

  1381                 case 'S':

  1382                 case 'Z':

  1383                     if (count) {

  1384                         if (array) {

  1385                             sig.append("_3");

  1386                         }

  1387                         sig.append(ch);

  1388                         if (ch == 'J' || ch == 'D') {

  1389                             cnt.append('1');

  1390                         } else {

  1391                             cnt.append('0');

  1392                         }

  1393                     } else {

  1394                         sig.insert(firstPos, ch);

  1395                         if (array) {

  1396                             returnType[0] = '[';

  1397                             sig.insert(firstPos, "_3");

  1398                         } else {

  1399                             returnType[0] = ch;

  1400                         }

  1401                     }

  1402                     array = false;

  1403                     continue;

  1404                 case 'V':

  1405                     assert !count;

  1406                     returnType[0] = 'V';

  1407                     sig.insert(firstPos, 'V');

  1408                     continue;

  1409                 case 'L':

  1410                     int next = descriptor.indexOf(';', i);

  1411                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1412                     if (count) {

  1413                         if (array) {

  1414                             sig.append("_3");

  1415                         }

  1416                         sig.append(realSig);

  1417                         cnt.append('0');

  1418                     } else {

  1419                         sig.insert(firstPos, realSig);

  1420                         if (array) {

  1421                             sig.insert(firstPos, "_3");

  1422                         }

  1423                         returnType[0] = 'L';

  1424                     }

  1425                     i = next + 1;

  1426                     array = false;

  1427                     continue;

  1428                 case '[':

  1429                     array = true;

  1430                     continue;

  1431                 default:

  1432                     throw new IllegalStateException("Invalid char: " + ch);

  1433             }

  1434         }

  1435     }

  1437     static String mangleSig(String sig) {

  1438         return mangleSig(sig, 0, sig.length());

  1439     }

  1441     private static String mangleMethodName(String name) {

  1442         StringBuilder sb = new StringBuilder(name.length() * 2);

  1443         int last = name.length();

  1444         for (int i = 0; i < last; i++) {

  1445             final char ch = name.charAt(i);

  1446             switch (ch) {

  1447                 case '_': sb.append("_1"); break;

  1448                 default: sb.append(ch); break;

  1449             }

  1450         }

  1451         return sb.toString();

  1452     }

  1453     private static String mangleSig(String txt, int first, int last) {

  1454         StringBuilder sb = new StringBuilder((last - first) * 2);

  1455         for (int i = first; i < last; i++) {

  1456             final char ch = txt.charAt(i);

  1457             switch (ch) {

  1458                 case '/': sb.append('_'); break;

  1459                 case '_': sb.append("_1"); break;

  1460                 case ';': sb.append("_2"); break;

  1461                 case '[': sb.append("_3"); break;

  1462                 default: sb.append(ch); break;

  1463             }

  1464         }

  1465         return sb.toString();

  1466     }

  1468     private static String mangleClassName(String name) {

  1469         return mangleSig(name);

  1470     }

  1472     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1473         StringBuilder name = new StringBuilder();

  1474         if ("<init>".equals(m.getName())) { // NOI18N

  1475             name.append("cons"); // NOI18N

  1476         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1477             name.append("class"); // NOI18N

  1478         } else {

  1479             name.append(mangleMethodName(m.getName()));

  1480         }

  1482         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1483         return name.toString();

  1484     }

  1486     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1487         StringBuilder name = new StringBuilder();

  1488         String descr = mi[2];//mi.getDescriptor();

  1489         String nm= mi[1];

  1490         if ("<init>".equals(nm)) { // NOI18N

  1491             name.append("cons"); // NOI18N

  1492         } else {

  1493             name.append(mangleMethodName(nm));

  1494         }

  1495         countArgs(descr, returnType, name, cnt);

  1496         return name.toString();

  1497     }

  1499     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1500     throws IOException {

  1501         int methodIndex = readUShortArg(byteCodes, i);

  1502         String[] mi = jc.getFieldInfoName(methodIndex);

  1503         char[] returnType = { 'V' };

  1504         StringBuilder cnt = new StringBuilder();

  1505         String mn = findMethodName(mi, cnt, returnType);

  1507         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1508         final CharSequence[] vars = new CharSequence[numArguments];

  1510         for (int j = numArguments - 1; j >= 0; --j) {

  1511             vars[j] = mapper.popValue();

  1512         }

  1514         if (returnType[0] != 'V') {

  1515             out.append("var ")

  1516                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1517                .append(" = ");

  1518         }

  1520         final String in = mi[0];

  1521         out.append(accessClass(mangleClassName(in)));

  1522         out.append("(false).");

  1523         if (mn.startsWith("cons_")) {

  1524             out.append("constructor.");

  1525         }

  1526         out.append(mn);

  1527         if (isStatic) {

  1528             out.append('(');

  1529         } else {

  1530             out.append(".call(");

  1531         }

  1532         if (numArguments > 0) {

  1533             out.append(vars[0]);

  1534             for (int j = 1; j < numArguments; ++j) {

  1535                 out.append(", ");

  1536                 out.append(vars[j]);

  1537             }

  1538         }

  1539         out.append(");");

  1540         i += 2;

  1541         addReference(in);

  1542         return i;

  1543     }

  1544     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1545     throws IOException {

  1546         int methodIndex = readUShortArg(byteCodes, i);

  1547         String[] mi = jc.getFieldInfoName(methodIndex);

  1548         char[] returnType = { 'V' };

  1549         StringBuilder cnt = new StringBuilder();

  1550         String mn = findMethodName(mi, cnt, returnType);

  1552         final int numArguments = cnt.length() + 1;

  1553         final CharSequence[] vars = new CharSequence[numArguments];

  1555         for (int j = numArguments - 1; j >= 0; --j) {

  1556             vars[j] = mapper.popValue();

  1557         }

  1559         if (returnType[0] != 'V') {

  1560             out.append("var ")

  1561                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1562                .append(" = ");

  1563         }

  1565         out.append(vars[0]).append('.');

  1566         out.append(mn);

  1567         out.append('(');

  1568         String sep = "";

  1569         for (int j = 1; j < numArguments; ++j) {

  1570             out.append(sep);

  1571             out.append(vars[j]);

  1572             sep = ", ";

  1573         }

  1574         out.append(");");

  1575         i += 2;

  1576         return i;

  1577     }

  1579     private void addReference(String cn) throws IOException {

  1580         if (requireReference(cn)) {

  1581             debug(" /* needs " + cn + " */");

  1582         }

  1583     }

  1585     private void outType(String d, StringBuilder out) {

  1586         int arr = 0;

  1587         while (d.charAt(0) == '[') {

  1588             out.append('A');

  1589             d = d.substring(1);

  1590         }

  1591         if (d.charAt(0) == 'L') {

  1592             assert d.charAt(d.length() - 1) == ';';

  1593             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1594         } else {

  1595             out.append(d);

  1596         }

  1597     }

  1599     private String encodeConstant(int entryIndex) throws IOException {

  1600         String[] classRef = { null };

  1601         String s = jc.stringValue(entryIndex, classRef);

  1602         if (classRef[0] != null) {

  1603             if (classRef[0].startsWith("[")) {

  1604                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1605             } else {

  1606                 addReference(classRef[0]);

  1607                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1608             }

  1609         }

  1610         return s;

  1611     }

  1613     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1614         byte[] arr = m.findAnnotationData(true);

  1615         if (arr == null) {

  1616             return null;

  1617         }

  1618         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1619         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1620         class P extends AnnotationParser {

  1621             public P() {

  1622                 super(false, true);

  1623             }

  1625             int cnt;

  1626             String[] args = new String[30];

  1627             String body;

  1628             boolean javacall;

  1629             boolean html4j;

  1631             @Override

  1632             protected void visitAttr(String type, String attr, String at, String value) {

  1633                 if (type.equals(jvmType)) {

  1634                     if ("body".equals(attr)) {

  1635                         body = value;

  1636                     } else if ("args".equals(attr)) {

  1637                         args[cnt++] = value;

  1638                     } else {

  1639                         throw new IllegalArgumentException(attr);

  1640                     }

  1641                 }

  1642                 if (type.equals(htmlType)) {

  1643                     html4j = true;

  1644                     if ("body".equals(attr)) {

  1645                         body = value;

  1646                     } else if ("args".equals(attr)) {

  1647                         args[cnt++] = value;

  1648                     } else if ("javacall".equals(attr)) {

  1649                         javacall = "1".equals(value);

  1650                     } else {

  1651                         throw new IllegalArgumentException(attr);

  1652                     }

  1653                 }

  1654             }

  1655         }

  1656         P p = new P();

  1657         p.parse(arr, jc);

  1658         if (p.body == null) {

  1659             return null;

  1660         }

  1661         StringBuilder cnt = new StringBuilder();

  1662         final String mn = findMethodName(m, cnt);

  1663         out.append(destObject).append(".").append(mn);

  1664         out.append(" = function(");

  1665         String space = "";

  1666         int index = 0;

  1667         StringBuilder toValue = new StringBuilder();

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

  1669             out.append(space);

  1670             space = outputArg(out, p.args, index);

  1671             if (p.html4j && space.length() > 0) {

  1672                 toValue.append("\n  ").append(p.args[index]).append(" = vm.org_apidesign_bck2brwsr_emul_lang_System(false).toJS(").

  1673                     append(p.args[index]).append(");");

  1674             }

  1675             index++;

  1676         }

  1677         out.append(") {").append("\n");

  1678         out.append(toValue.toString());

  1679         if (p.javacall) {

  1680             int lastSlash = jc.getClassName().lastIndexOf('/');

  1681             final String pkg = jc.getClassName().substring(0, lastSlash);

  1682             out.append(mangleCallbacks(pkg, p.body));

  1683             requireReference(pkg + "/$JsCallbacks$");

  1684         } else {

  1685             out.append(p.body);

  1686         }

  1687         out.append("\n}\n");

  1688         return mn;

  1689     }

  1691     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1692         StringBuilder sb = new StringBuilder();

  1693         int pos = 0;

  1694         for (;;) {

  1695             int next = body.indexOf(".@", pos);

  1696             if (next == -1) {

  1697                 sb.append(body.substring(pos));

  1698                 body = sb.toString();

  1699                 break;

  1700             }

  1701             int ident = next;

  1702             while (ident > 0) {

  1703                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1704                     ident++;

  1705                     break;

  1706                 }

  1707             }

  1708             String refId = body.substring(ident, next);

  1710             sb.append(body.substring(pos, ident));

  1712             int sigBeg = body.indexOf('(', next);

  1713             int sigEnd = body.indexOf(')', sigBeg);

  1714             int colon4 = body.indexOf("::", next);

  1715             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1716                 throw new IllegalStateException("Malformed body " + body);

  1717             }

  1718             String fqn = body.substring(next + 2, colon4);

  1719             String method = body.substring(colon4 + 2, sigBeg);

  1720             String params = body.substring(sigBeg, sigEnd + 1);

  1722             int paramBeg = body.indexOf('(', sigEnd + 1);

  1724             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1725             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1726             sb.append("(").append(refId);

  1727             if (body.charAt(paramBeg + 1) != ')') {

  1728                 sb.append(",");

  1729             }

  1730             pos = paramBeg + 1;

  1731         }

  1732         sb = null;

  1733         pos = 0;

  1734         for (;;) {

  1735             int next = body.indexOf("@", pos);

  1736             if (next == -1) {

  1737                 if (sb == null) {

  1738                     return body;

  1739                 }

  1740                 sb.append(body.substring(pos));

  1741                 return sb;

  1742             }

  1743             if (sb == null) {

  1744                 sb = new StringBuilder();

  1745             }

  1747             sb.append(body.substring(pos, next));

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

  1750             int sigEnd = body.indexOf(')', sigBeg);

  1751             int colon4 = body.indexOf("::", next);

  1752             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1753                 throw new IllegalStateException("Malformed body " + body);

  1754             }

  1755             String fqn = body.substring(next + 1, colon4);

  1756             String method = body.substring(colon4 + 2, sigBeg);

  1757             String params = body.substring(sigBeg, sigEnd + 1);

  1759             int paramBeg = body.indexOf('(', sigEnd + 1);

  1761             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1762             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1763             sb.append("(");

  1764             pos = paramBeg + 1;

  1765         }

  1766     }

  1768     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1769         if (params.startsWith("(")) {

  1770             params = params.substring(1);

  1771         }

  1772         if (params.endsWith(")")) {

  1773             params = params.substring(0, params.length() - 1);

  1774         }

  1775         StringBuilder sb = new StringBuilder();

  1776         final String fqnu = fqn.replace('.', '_');

  1777         final String rfqn = mangleClassName(fqnu);

  1778         final String rm = mangleMethodName(method);

  1779         final String srp;

  1780         {

  1781             StringBuilder pb = new StringBuilder();

  1782             int len = params.length();

  1783             int indx = 0;

  1784             while (indx < len) {

  1785                 char ch = params.charAt(indx);

  1786                 if (ch == '[' || ch == 'L') {

  1787                     pb.append("Ljava/lang/Object;");

  1788                     indx = params.indexOf(';', indx) + 1;

  1789                 } else {

  1790                     pb.append(ch);

  1791                     indx++;

  1792                 }

  1793             }

  1794             srp = mangleSig(pb.toString());

  1795         }

  1796         final String rp = mangleSig(params);

  1797         final String mrp = mangleMethodName(rp);

  1798         sb.append(rfqn).append("$").append(rm).

  1799             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1800         if (!isStatic) {

  1801             sb.append('L').append(fqnu).append("_2");

  1802         }

  1803         sb.append(srp);

  1804         return sb.toString();

  1805     }

  1807     private static String className(ClassData jc) {

  1808         //return jc.getName().getInternalName().replace('/', '_');

  1809         return mangleClassName(jc.getClassName());

  1810     }

  1812     private static String[] findAnnotation(

  1813         byte[] arr, ClassData cd, final String className,

  1814         final String... attrNames

  1815     ) throws IOException {

  1816         if (arr == null) {

  1817             return null;

  1818         }

  1819         final String[] values = new String[attrNames.length];

  1820         final boolean[] found = { false };

  1821         final String jvmType = "L" + className.replace('.', '/') + ";";

  1822         AnnotationParser ap = new AnnotationParser(false, true) {

  1823             @Override

  1824             protected void visitAttr(String type, String attr, String at, String value) {

  1825                 if (type.equals(jvmType)) {

  1826                     found[0] = true;

  1827                     for (int i = 0; i < attrNames.length; i++) {

  1828                         if (attrNames[i].equals(attr)) {

  1829                             values[i] = value;

  1830                         }

  1831                     }

  1832                 }

  1833             }

  1835         };

  1836         ap.parse(arr, cd);

  1837         return found[0] ? values : null;

  1838     }

  1840     private CharSequence initField(FieldData v) {

  1841         final String is = v.getInternalSig();

  1842         if (is.length() == 1) {

  1843             switch (is.charAt(0)) {

  1844                 case 'S':

  1845                 case 'J':

  1846                 case 'B':

  1847                 case 'Z':

  1848                 case 'C':

  1849                 case 'I': return " = 0;";

  1850                 case 'F':

  1851                 case 'D': return " = 0.0;";

  1852                 default:

  1853                     throw new IllegalStateException(is);

  1854             }

  1855         }

  1856         return " = null;";

  1857     }

  1859     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1860         AnnotationParser ap = new AnnotationParser(true, false) {

  1861             int[] cnt = new int[32];

  1862             int depth;

  1864             @Override

  1865             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1866                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1867                 requireReference(slashType);

  1869                 if (cnt[depth]++ > 0) {

  1870                     out.append(",");

  1871                 }

  1872                 if (top) {

  1873                     out.append('"').append(attrType).append("\" : ");

  1874                 }

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

  1876                 cnt[++depth] = 0;

  1877             }

  1879             @Override

  1880             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1881                 out.append("\n}\n");

  1882                 depth--;

  1883             }

  1885             @Override

  1886             protected void visitValueStart(String attrName, char type) throws IOException {

  1887                 if (cnt[depth]++ > 0) {

  1888                     out.append(",\n");

  1889                 }

  1890                 cnt[++depth] = 0;

  1891                 if (attrName != null) {

  1892                     out.append(attrName).append(" : ");

  1893                 }

  1894                 if (type == '[') {

  1895                     out.append("[");

  1896                 }

  1897             }

  1899             @Override

  1900             protected void visitValueEnd(String attrName, char type) throws IOException {

  1901                 if (type == '[') {

  1902                     out.append("]");

  1903                 }

  1904                 depth--;

  1905             }

  1907             @Override

  1908             protected void visitAttr(String type, String attr, String attrType, String value)

  1909             throws IOException {

  1910                 if (attr == null && value == null) {

  1911                     return;

  1912                 }

  1913                 out.append(value);

  1914             }

  1916             @Override

  1917             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1918             throws IOException {

  1919                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1920                 requireReference(slashType);

  1922                 out.append(accessClass(mangleClassName(slashType)))

  1923                    .append("(false).constructor.fld_").append(value);

  1924             }

  1925         };

  1926         ap.parse(data, cd);

  1927     }

  1929     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1930         final String name = args[indx];

  1931         if (name == null) {

  1932             return "";

  1933         }

  1934         if (name.contains(",")) {

  1935             throw new IOException("Wrong parameter with ',': " + name);

  1936         }

  1937         out.append(name);

  1938         return ",";

  1939     }

  1941     final void emit(

  1942         StackMapper sm,

  1943         final Appendable out,

  1944         final String format, final CharSequence... params

  1945     ) throws IOException {

  1946         sm.flush(out);

  1947         emitImpl(out, format, params);

  1948     }

  1949     static void emitImpl(final Appendable out,

  1950                              final String format,

  1951                              final CharSequence... params) throws IOException {

  1952         final int length = format.length();

  1954         int processed = 0;

  1955         int paramOffset = format.indexOf('@');

  1956         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1957             final char paramChar = format.charAt(paramOffset + 1);

  1958             if ((paramChar >= '1') && (paramChar <= '9')) {

  1959                 final int paramIndex = paramChar - '0' - 1;

  1961                 out.append(format, processed, paramOffset);

  1962                 out.append(params[paramIndex]);

  1964                 ++paramOffset;

  1965                 processed = paramOffset + 1;

  1966             }

  1968             paramOffset = format.indexOf('@', paramOffset + 1);

  1969         }

  1971         out.append(format, processed, length);

  1972     }

  1974     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1975         out.append("} catch (e) {\n");

  1976         int finallyPC = -1;

  1977         for (TrapData e : traps) {

  1978             if (e == null) {

  1979                 break;

  1980             }

  1981             if (e.catch_cpx != 0) { //not finally

  1982                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1983                 addReference(classInternalName);

  1984                 out.append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  1985                 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1986                 out.append("var stA0 = e;");

  1987                 goTo(out, current, e.handler_pc, topMostLabel);

  1988                 out.append("}\n");

  1989             } else {

  1990                 finallyPC = e.handler_pc;

  1991             }

  1992         }

  1993         if (finallyPC == -1) {

  1994             out.append("throw e;");

  1995         } else {

  1996             out.append("var stA0 = e;");

  1997             goTo(out, current, finallyPC, topMostLabel);

  1998         }

  1999         out.append("\n}");

  2000     }

  2002     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2003         if (to < current) {

  2004             if (canBack < to) {

  2005                 out.append("{ gt = 0; continue X_" + to + "; }");

  2006             } else {

  2007                 out.append("{ gt = " + to + "; continue X_0; }");

  2008             }

  2009         } else {

  2010             out.append("{ gt = " + to + "; break IF; }");

  2011         }

  2012     }

  2014     private static void emitIf(

  2015         StackMapper sm,

  2016         Appendable out, String pattern,

  2017         CharSequence param,

  2018         int current, int to, int canBack

  2019     ) throws IOException {

  2020         sm.flush(out);

  2021         emitImpl(out, pattern, param);

  2022         goTo(out, current, to, canBack);

  2023     }

  2025     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2026         String jvmType;

  2027         switch (atype) {

  2028             case 4: jvmType = "[Z"; break;

  2029             case 5: jvmType = "[C"; break;

  2030             case 6: jvmType = "[F"; break;

  2031             case 7: jvmType = "[D"; break;

  2032             case 8: jvmType = "[B"; break;

  2033             case 9: jvmType = "[S"; break;

  2034             case 10: jvmType = "[I"; break;

  2035             case 11: jvmType = "[J"; break;

  2036             default: throw new IllegalStateException("Array type: " + atype);

  2037         }

  2038         emit(smapper, out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  2039              smapper.popI(), smapper.pushA(), jvmType);

  2040     }

  2042     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2043         String typeName = jc.getClassName(type);

  2044         if (typeName.startsWith("[")) {

  2045             typeName = "[" + typeName;

  2046         } else {

  2047             typeName = "[L" + typeName + ";";

  2048         }

  2049         emit(smapper, out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  2050              smapper.popI(), smapper.pushA(), typeName);

  2051     }

  2053     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2054         String typeName = jc.getClassName(type);

  2055         int dim = readUByte(byteCodes, ++i);

  2056         StringBuilder dims = new StringBuilder();

  2057         dims.append('[');

  2058         for (int d = 0; d < dim; d++) {

  2059             if (d != 0) {

  2060                 dims.insert(1, ",");

  2061             }

  2062             dims.insert(1, smapper.popI());

  2063         }

  2064         dims.append(']');

  2065         emit(smapper, out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  2066              dims.toString(), smapper.pushA(), typeName);

  2067         return i;

  2068     }

  2070     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2071         int table = i / 4 * 4 + 4;

  2072         int dflt = i + readInt4(byteCodes, table);

  2073         table += 4;

  2074         int low = readInt4(byteCodes, table);

  2075         table += 4;

  2076         int high = readInt4(byteCodes, table);

  2077         table += 4;

  2078         out.append("switch (").append(smapper.popI()).append(") {\n");

  2079         while (low <= high) {

  2080             int offset = i + readInt4(byteCodes, table);

  2081             table += 4;

  2082             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  2083             low++;

  2084         }

  2085         out.append("  default: ");

  2086         goTo(out, i, dflt, topMostLabel);

  2087         out.append("\n}");

  2088         i = table - 1;

  2089         return i;

  2090     }

  2092     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2093         int table = i / 4 * 4 + 4;

  2094         int dflt = i + readInt4(byteCodes, table);

  2095         table += 4;

  2096         int n = readInt4(byteCodes, table);

  2097         table += 4;

  2098         out.append("switch (").append(smapper.popI()).append(") {\n");

  2099         while (n-- > 0) {

  2100             int cnstnt = readInt4(byteCodes, table);

  2101             table += 4;

  2102             int offset = i + readInt4(byteCodes, table);

  2103             table += 4;

  2104             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  2105         }

  2106         out.append("  default: ");

  2107         goTo(out, i, dflt, topMostLabel);

  2108         out.append("\n}");

  2109         i = table - 1;

  2110         return i;

  2111     }

  2113     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2114         final String type = jc.getClassName(indx);

  2115         if (!type.startsWith("[")) {

  2116             emit(smapper, out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  2117                  smapper.popA(), smapper.pushI(),

  2118                  type.replace('/', '_'));

  2119         } else {

  2120             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);",

  2121                 smapper.popA(), smapper.pushI(),

  2122                 type

  2123             );

  2124         }

  2125     }

  2127     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2128         final String type = jc.getClassName(indx);

  2129         if (!type.startsWith("[")) {

  2130             emit(smapper, out,

  2131                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  2132                  smapper.getA(0), type.replace('/', '_'));

  2133         } else {

  2134             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);",

  2135                  smapper.getA(0), type

  2136             );

  2137         }

  2138     }

  2140     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2141         for (int j = prev; j <= i; j++) {

  2142             out.append(" ");

  2143             final int cc = readUByte(byteCodes, j);

  2144             out.append(Integer.toString(cc));

  2145         }

  2146     }

  2147 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 16 Feb 2014 23:33:57 +0100
branch	ReducedStack
changeset 1463	15c1110da559
parent 1462	1e7ff3ba3666
child 1464	851742770741
permissions	-rw-r--r--