hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@be34f84e9d9f

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

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

   158                         continue;

   159                     }

   160                 }

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

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

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

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

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

   166             } else {

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

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

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

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

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

   172                    .append("; };");

   173             }

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

   176         }

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

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

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

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

   181                 "name", "value"

   182             );

   183             if (only != null) {

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

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

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

   187                 }

   188                 continue;

   189             }

   190             String destObject;

   191             String mn;

   192             out.append("\n    ");

   193             if (m.isStatic()) {

   194                 destObject = "c";

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

   196             } else {

   197                 if (m.isConstructor()) {

   198                     destObject = "CLS";

   199                     mn = generateInstanceMethod(destObject, m);

   200                 } else {

   201                     destObject = "c";

   202                     mn = generateInstanceMethod(destObject, m);

   203                 }

   204             }

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

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

   207             if (runAnno != null) {

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

   209                 generateAnno(jc, out, runAnno);

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

   211             }

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

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

   214         }

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

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

   217         String instOfName = "$instOf_" + className;

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

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

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

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

   222             requireReference(superInterface);

   223         }

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

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

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

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

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

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

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

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

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

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

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

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

   236         if (classAnno != null) {

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

   238             generateAnno(jc, out, classAnno);

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

   240         }

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

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

   243         }

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

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

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

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

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

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

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

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

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

   253                 "name", "value"

   254             );

   255             if (only != null) {

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

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

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

   259                 }

   260                 continue;

   261             }

   262             if (!v.isStatic()) {

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

   264                     append(className).append('_').

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

   266             }

   267         }

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

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

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

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

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

   275 //        StringBuilder sb = new StringBuilder();

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

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

   278 //        }

   279         return "";

   280     }

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

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

   283         if (jsb != null) {

   284             return jsb;

   285         }

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

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

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

   289         }

   290         generateMethod(destObject, mn, m);

   291         return mn;

   292     }

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

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

   296         if (jsb != null) {

   297             return jsb;

   298         }

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

   300         generateMethod(destObject, mn, m);

   301         return mn;

   302     }

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

   305             throws IOException {

   306         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   307         TrapDataIterator trap = m.getTrapDataIterator();

   308         final LocalsMapper lmapper =

   309                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   316         if (byteCodes == null) {

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

   318                .append(jc.getClassName()).append('.')

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

   320             out.append("};");

   321             return;

   322         }

   324         final StackMapper smapper = new StackMapper();

   326         if (!m.isStatic()) {

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

   328         }

   330         int lastStackFrame;

   331         TrapData[] previousTrap = null;

   332         boolean wide = false;

   333         boolean didBranches;

   334         if (stackMapIterator.isEmpty()) {

   335             didBranches = false;

   336             lastStackFrame = 0;

   337         } else {

   338             didBranches = true;

   339             lastStackFrame = -1;

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

   341         }

   343         int openBraces = 0;

   344         int topMostLabel = 0;

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

   346             int prev = i;

   347             stackMapIterator.advanceTo(i);

   348             boolean changeInCatch = trap.advanceTo(i);

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

   350                 if (previousTrap != null) {

   351                     generateCatch(previousTrap, i, topMostLabel);

   352                     previousTrap = null;

   353                 }

   354             }

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

   356                 smapper.flush(out);

   357                 if (i != 0) {

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

   359                 }

   360                 if (openBraces > 64) {

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

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

   363                     }

   364                     openBraces = 1;

   365                     topMostLabel = i;

   366                 }

   368                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   372                 openBraces++;

   373                 changeInCatch = true;

   374             } else {

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

   376             }

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

   378                 out.append("try {");

   379                 previousTrap = trap.current();

   380             }

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

   382             switch (c) {

   383                 case opc_aload_0:

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

   385                     break;

   386                 case opc_iload_0:

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

   388                     break;

   389                 case opc_lload_0:

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

   391                     break;

   392                 case opc_fload_0:

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

   394                     break;

   395                 case opc_dload_0:

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

   397                     break;

   398                 case opc_aload_1:

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

   400                     break;

   401                 case opc_iload_1:

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

   403                     break;

   404                 case opc_lload_1:

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

   406                     break;

   407                 case opc_fload_1:

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

   409                     break;

   410                 case opc_dload_1:

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

   412                     break;

   413                 case opc_aload_2:

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

   415                     break;

   416                 case opc_iload_2:

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

   418                     break;

   419                 case opc_lload_2:

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

   421                     break;

   422                 case opc_fload_2:

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

   424                     break;

   425                 case opc_dload_2:

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

   427                     break;

   428                 case opc_aload_3:

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

   430                     break;

   431                 case opc_iload_3:

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

   433                     break;

   434                 case opc_lload_3:

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

   436                     break;

   437                 case opc_fload_3:

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

   439                     break;

   440                 case opc_dload_3:

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

   442                     break;

   443                 case opc_iload: {

   444                     ++i;

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

   446                                           : readUByte(byteCodes, i);

   447                     wide = false;

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

   449                     break;

   450                 }

   451                 case opc_lload: {

   452                     ++i;

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

   454                                           : readUByte(byteCodes, i);

   455                     wide = false;

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

   457                     break;

   458                 }

   459                 case opc_fload: {

   460                     ++i;

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

   462                                           : readUByte(byteCodes, i);

   463                     wide = false;

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

   465                     break;

   466                 }

   467                 case opc_dload: {

   468                     ++i;

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

   470                                           : readUByte(byteCodes, i);

   471                     wide = false;

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

   473                     break;

   474                 }

   475                 case opc_aload: {

   476                     ++i;

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

   478                                           : readUByte(byteCodes, i);

   479                     wide = false;

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

   481                     break;

   482                 }

   483                 case opc_istore: {

   484                     ++i;

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

   486                                           : readUByte(byteCodes, i);

   487                     wide = false;

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

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

   490                     break;

   491                 }

   492                 case opc_lstore: {

   493                     ++i;

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

   495                                           : readUByte(byteCodes, i);

   496                     wide = false;

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

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

   499                     break;

   500                 }

   501                 case opc_fstore: {

   502                     ++i;

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

   504                                           : readUByte(byteCodes, i);

   505                     wide = false;

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

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

   508                     break;

   509                 }

   510                 case opc_dstore: {

   511                     ++i;

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

   513                                           : readUByte(byteCodes, i);

   514                     wide = false;

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

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

   517                     break;

   518                 }

   519                 case opc_astore: {

   520                     ++i;

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

   522                                           : readUByte(byteCodes, i);

   523                     wide = false;

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

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

   526                     break;

   527                 }

   528                 case opc_astore_0:

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

   530                     break;

   531                 case opc_istore_0:

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

   533                     break;

   534                 case opc_lstore_0:

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

   536                     break;

   537                 case opc_fstore_0:

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

   539                     break;

   540                 case opc_dstore_0:

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

   542                     break;

   543                 case opc_astore_1:

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

   545                     break;

   546                 case opc_istore_1:

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

   548                     break;

   549                 case opc_lstore_1:

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

   551                     break;

   552                 case opc_fstore_1:

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

   554                     break;

   555                 case opc_dstore_1:

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

   557                     break;

   558                 case opc_astore_2:

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

   560                     break;

   561                 case opc_istore_2:

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

   563                     break;

   564                 case opc_lstore_2:

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

   566                     break;

   567                 case opc_fstore_2:

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

   569                     break;

   570                 case opc_dstore_2:

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

   572                     break;

   573                 case opc_astore_3:

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

   575                     break;

   576                 case opc_istore_3:

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

   578                     break;

   579                 case opc_lstore_3:

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

   581                     break;

   582                 case opc_fstore_3:

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

   584                     break;

   585                 case opc_dstore_3:

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

   587                     break;

   588                 case opc_iadd:

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

   590                     break;

   591                 case opc_ladd:

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

   593                     break;

   594                 case opc_fadd:

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

   596                     break;

   597                 case opc_dadd:

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

   599                     break;

   600                 case opc_isub:

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

   602                     break;

   603                 case opc_lsub:

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

   605                     break;

   606                 case opc_fsub:

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

   608                     break;

   609                 case opc_dsub:

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

   611                     break;

   612                 case opc_imul:

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

   614                     break;

   615                 case opc_lmul:

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

   617                     break;

   618                 case opc_fmul:

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

   620                     break;

   621                 case opc_dmul:

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

   623                     break;

   624                 case opc_idiv:

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

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

   627                     break;

   628                 case opc_ldiv:

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

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

   631                     break;

   632                 case opc_fdiv:

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

   634                     break;

   635                 case opc_ddiv:

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

   637                     break;

   638                 case opc_irem:

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

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

   641                     break;

   642                 case opc_lrem:

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

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

   645                     break;

   646                 case opc_frem:

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

   648                     break;

   649                 case opc_drem:

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

   651                     break;

   652                 case opc_iand:

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

   654                     break;

   655                 case opc_land:

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

   657                     break;

   658                 case opc_ior:

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

   660                     break;

   661                 case opc_lor:

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

   663                     break;

   664                 case opc_ixor:

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

   666                     break;

   667                 case opc_lxor:

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

   669                     break;

   670                 case opc_ineg:

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

   672                     break;

   673                 case opc_lneg:

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

   675                     break;

   676                 case opc_fneg:

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

   678                     break;

   679                 case opc_dneg:

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

   681                     break;

   682                 case opc_ishl:

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

   684                     break;

   685                 case opc_lshl:

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

   687                     break;

   688                 case opc_ishr:

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

   690                     break;

   691                 case opc_lshr:

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

   693                     break;

   694                 case opc_iushr:

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

   696                     break;

   697                 case opc_lushr:

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

   699                     break;

   700                 case opc_iinc: {

   701                     ++i;

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

   703                                              : readUByte(byteCodes, i);

   704                     ++i;

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

   706                                             : byteCodes[i];

   707                     wide = false;

   708                     if (incrBy == 1) {

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

   710                     } else {

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

   712                              lmapper.getI(varIndx),

   713                              Integer.toString(incrBy));

   714                     }

   715                     break;

   716                 }

   717                 case opc_return:

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

   719                     break;

   720                 case opc_ireturn:

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

   722                     break;

   723                 case opc_lreturn:

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

   725                     break;

   726                 case opc_freturn:

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

   728                     break;

   729                 case opc_dreturn:

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

   731                     break;

   732                 case opc_areturn:

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

   734                     break;

   735                 case opc_i2l:

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

   737                     break;

   738                 case opc_i2f:

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

   740                     break;

   741                 case opc_i2d:

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

   743                     break;

   744                 case opc_l2i:

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

   746                     break;

   747                     // max int check?

   748                 case opc_l2f:

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

   750                     break;

   751                 case opc_l2d:

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

   753                     break;

   754                 case opc_f2d:

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

   756                          smapper.getF(0));

   757                     break;

   758                 case opc_d2f:

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

   760                          smapper.getD(0));

   761                     break;

   762                 case opc_f2i:

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

   764                          smapper.getF(0));

   765                     break;

   766                 case opc_f2l:

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

   768                          smapper.getF(0));

   769                     break;

   770                 case opc_d2i:

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

   772                          smapper.getD(0));

   773                     break;

   774                 case opc_d2l:

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

   776                     break;

   777                 case opc_i2b:

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

   779                     break;

   780                 case opc_i2c:

   781                     break;

   782                 case opc_i2s:

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

   784                     break;

   785                 case opc_aconst_null:

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

   787                     break;

   788                 case opc_iconst_m1:

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

   790                     break;

   791                 case opc_iconst_0:

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

   793                     break;

   794                 case opc_dconst_0:

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

   796                     break;

   797                 case opc_lconst_0:

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

   799                     break;

   800                 case opc_fconst_0:

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

   802                     break;

   803                 case opc_iconst_1:

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

   805                     break;

   806                 case opc_lconst_1:

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

   808                     break;

   809                 case opc_fconst_1:

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

   811                     break;

   812                 case opc_dconst_1:

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

   814                     break;

   815                 case opc_iconst_2:

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

   817                     break;

   818                 case opc_fconst_2:

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

   820                     break;

   821                 case opc_iconst_3:

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

   823                     break;

   824                 case opc_iconst_4:

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

   826                     break;

   827                 case opc_iconst_5:

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

   829                     break;

   830                 case opc_ldc: {

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

   832                     String v = encodeConstant(indx);

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

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

   835                     break;

   836                 }

   837                 case opc_ldc_w:

   838                 case opc_ldc2_w: {

   839                     int indx = readUShortArg(byteCodes, i);

   840                     i += 2;

   841                     String v = encodeConstant(indx);

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

   843                     if (type == VarType.LONG) {

   844                         final Long lv = new Long(v);

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

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

   847                         if (hi == 0) {

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

   849                         } else {

   850                             smapper.assign(out, VarType.LONG,

   851                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   852                                     Integer.toHexString(low) + ")"

   853                             );

   854                         }

   855                     } else {

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

   857                     }

   858                     break;

   859                 }

   860                 case opc_lcmp:

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

   862                     break;

   863                 case opc_fcmpl:

   864                 case opc_fcmpg:

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

   866                     break;

   867                 case opc_dcmpl:

   868                 case opc_dcmpg:

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

   870                     break;

   871                 case opc_if_acmpeq:

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

   873                                    "===", topMostLabel);

   874                     break;

   875                 case opc_if_acmpne:

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

   877                                    "!==", topMostLabel);

   878                     break;

   879                 case opc_if_icmpeq:

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

   881                                    "==", topMostLabel);

   882                     break;

   883                 case opc_ifeq: {

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

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

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

   887                     i += 2;

   888                     break;

   889                 }

   890                 case opc_ifne: {

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

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

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

   894                     i += 2;

   895                     break;

   896                 }

   897                 case opc_iflt: {

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

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

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

   901                     i += 2;

   902                     break;

   903                 }

   904                 case opc_ifle: {

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

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

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

   908                     i += 2;

   909                     break;

   910                 }

   911                 case opc_ifgt: {

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

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

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

   915                     i += 2;

   916                     break;

   917                 }

   918                 case opc_ifge: {

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

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

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

   922                     i += 2;

   923                     break;

   924                 }

   925                 case opc_ifnonnull: {

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

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

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

   929                     i += 2;

   930                     break;

   931                 }

   932                 case opc_ifnull: {

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

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

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

   936                     i += 2;

   937                     break;

   938                 }

   939                 case opc_if_icmpne:

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

   941                                    "!=", topMostLabel);

   942                     break;

   943                 case opc_if_icmplt:

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

   945                                    "<", topMostLabel);

   946                     break;

   947                 case opc_if_icmple:

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

   949                                    "<=", topMostLabel);

   950                     break;

   951                 case opc_if_icmpgt:

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

   953                                    ">", topMostLabel);

   954                     break;

   955                 case opc_if_icmpge:

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

   957                                    ">=", topMostLabel);

   958                     break;

   959                 case opc_goto: {

   960                     smapper.flush(out);

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

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

   963                     i += 2;

   964                     break;

   965                 }

   966                 case opc_lookupswitch: {

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

   968                     break;

   969                 }

   970                 case opc_tableswitch: {

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

   972                     break;

   973                 }

   974                 case opc_invokeinterface: {

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

   976                     break;

   977                 }

   978                 case opc_invokevirtual:

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

   980                     break;

   981                 case opc_invokespecial:

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

   983                     break;

   984                 case opc_invokestatic:

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

   986                     break;

   987                 case opc_new: {

   988                     int indx = readUShortArg(byteCodes, i);

   989                     String ci = jc.getClassName(indx);

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

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

   992                     addReference(ci);

   993                     i += 2;

   994                     break;

   995                 }

   996                 case opc_newarray:

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

   998                     generateNewArray(atype, smapper);

   999                     break;

  1000                 case opc_anewarray: {

  1001                     int type = readUShortArg(byteCodes, i);

  1002                     i += 2;

  1003                     generateANewArray(type, smapper);

  1004                     break;

  1005                 }

  1006                 case opc_multianewarray: {

  1007                     int type = readUShortArg(byteCodes, i);

  1008                     i += 2;

  1009                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1010                     break;

  1011                 }

  1012                 case opc_arraylength:

  1013                     smapper.replace(out, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1014                     break;

  1015                 case opc_lastore:

  1016                     emit(smapper, out, "Array.at(@3, @2, @1);",

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

  1018                     break;

  1019                 case opc_fastore:

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

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

  1022                     break;

  1023                 case opc_dastore:

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

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

  1026                     break;

  1027                 case opc_aastore:

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

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

  1030                     break;

  1031                 case opc_iastore:

  1032                 case opc_bastore:

  1033                 case opc_castore:

  1034                 case opc_sastore:

  1035                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1036                          smapper.popI(), smapper.popI(), smapper.popA());

  1037                     break;

  1038                 case opc_laload:

  1039                     smapper.replace(out, VarType.LONG, "Array.at(@2, @1)",

  1040                          smapper.popI(), smapper.getA(0));

  1041                     break;

  1042                 case opc_faload:

  1043                     smapper.replace(out, VarType.FLOAT, "Array.at(@2, @1)",

  1044                          smapper.popI(), smapper.getA(0));

  1045                     break;

  1046                 case opc_daload:

  1047                     smapper.replace(out, VarType.DOUBLE, "Array.at(@2, @1)",

  1048                          smapper.popI(), smapper.getA(0));

  1049                     break;

  1050                 case opc_aaload:

  1051                     smapper.replace(out, VarType.REFERENCE, "Array.at(@2, @1)",

  1052                          smapper.popI(), smapper.getA(0));

  1053                     break;

  1054                 case opc_iaload:

  1055                 case opc_baload:

  1056                 case opc_caload:

  1057                 case opc_saload:

  1058                     smapper.replace(out, VarType.INTEGER, "Array.at(@2, @1)",

  1059                          smapper.popI(), smapper.getA(0));

  1060                     break;

  1061                 case opc_pop:

  1062                 case opc_pop2:

  1063                     smapper.pop(1);

  1064                     debug("/* pop */");

  1065                     break;

  1066                 case opc_dup: {

  1067                     final Variable v = smapper.get(0);

  1068                     emit(smapper, out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1069                     break;

  1070                 }

  1071                 case opc_dup2: {

  1072                     final Variable vi1 = smapper.get(0);

  1074                     if (vi1.isCategory2()) {

  1075                         emit(smapper, out, "var @1 = @2;",

  1076                              smapper.pushT(vi1.getType()), vi1);

  1077                     } else {

  1078                         final Variable vi2 = smapper.get(1);

  1079                         emit(smapper, out, "var @1 = @2, @3 = @4;",

  1080                              smapper.pushT(vi2.getType()), vi2,

  1081                              smapper.pushT(vi1.getType()), vi1);

  1082                     }

  1083                     break;

  1084                 }

  1085                 case opc_dup_x1: {

  1086                     final Variable vi1 = smapper.pop(out);

  1087                     final Variable vi2 = smapper.pop(out);

  1088                     final Variable vo3 = smapper.pushT(vi1.getType());

  1089                     final Variable vo2 = smapper.pushT(vi2.getType());

  1090                     final Variable vo1 = smapper.pushT(vi1.getType());

  1092                     emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1093                          vo1, vi1, vo2, vi2, vo3, vo1);

  1094                     break;

  1095                 }

  1096                 case opc_dup2_x1: {

  1097                     final Variable vi1 = smapper.pop(out);

  1098                     final Variable vi2 = smapper.pop(out);

  1100                     if (vi1.isCategory2()) {

  1101                         final Variable vo3 = smapper.pushT(vi1.getType());

  1102                         final Variable vo2 = smapper.pushT(vi2.getType());

  1103                         final Variable vo1 = smapper.pushT(vi1.getType());

  1105                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

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

  1107                     } else {

  1108                         final Variable vi3 = smapper.pop(out);

  1109                         final Variable vo5 = smapper.pushT(vi2.getType());

  1110                         final Variable vo4 = smapper.pushT(vi1.getType());

  1111                         final Variable vo3 = smapper.pushT(vi3.getType());

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

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

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

  1116                              vo1, vi1, vo2, vi2, vo3, vi3);

  1117                         emit(smapper, out, " @1 = @2, @3 = @4;",

  1118                              vo4, vo1, vo5, vo2);

  1119                     }

  1120                     break;

  1121                 }

  1122                 case opc_dup_x2: {

  1123                     final Variable vi1 = smapper.pop(out);

  1124                     final Variable vi2 = smapper.pop(out);

  1126                     if (vi2.isCategory2()) {

  1127                         final Variable vo3 = smapper.pushT(vi1.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;",

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

  1133                     } else {

  1134                         final Variable vi3 = smapper.pop(out);

  1135                         final Variable vo4 = smapper.pushT(vi1.getType());

  1136                         final Variable vo3 = smapper.pushT(vi3.getType());

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

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

  1140                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1141                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1142                     }

  1143                     break;

  1144                 }

  1145                 case opc_dup2_x2: {

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

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

  1149                     if (vi1.isCategory2()) {

  1150                         if (vi2.isCategory2()) {

  1151                             final Variable vo3 = smapper.pushT(vi1.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;",

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

  1157                         } else {

  1158                             final Variable vi3 = smapper.pop(out);

  1159                             final Variable vo4 = smapper.pushT(vi1.getType());

  1160                             final Variable vo3 = smapper.pushT(vi3.getType());

  1161                             final Variable vo2 = smapper.pushT(vi2.getType());

  1162                             final Variable vo1 = smapper.pushT(vi1.getType());

  1164                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1165                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1166                         }

  1167                     } else {

  1168                         final Variable vi3 = smapper.pop(out);

  1170                         if (vi3.isCategory2()) {

  1171                             final Variable vo5 = smapper.pushT(vi2.getType());

  1172                             final Variable vo4 = smapper.pushT(vi1.getType());

  1173                             final Variable vo3 = smapper.pushT(vi3.getType());

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

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

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

  1178                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1179                             emit(smapper, out, " @1 = @2, @3 = @4;",

  1180                                  vo4, vo1, vo5, vo2);

  1181                         } else {

  1182                             final Variable vi4 = smapper.pop(out);

  1183                             final Variable vo6 = smapper.pushT(vi2.getType());

  1184                             final Variable vo5 = smapper.pushT(vi1.getType());

  1185                             final Variable vo4 = smapper.pushT(vi4.getType());

  1186                             final Variable vo3 = smapper.pushT(vi3.getType());

  1187                             final Variable vo2 = smapper.pushT(vi2.getType());

  1188                             final Variable vo1 = smapper.pushT(vi1.getType());

  1190                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1191                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1192                             emit(smapper, out, " @1 = @2, @3 = @4;",

  1193                                  vo5, vo1, vo6, vo2);

  1194                         }

  1195                     }

  1196                     break;

  1197                 }

  1198                 case opc_swap: {

  1199                     final Variable vi1 = smapper.get(0);

  1200                     final Variable vi2 = smapper.get(1);

  1202                     if (vi1.getType() == vi2.getType()) {

  1203                         final Variable tmp = smapper.pushT(vi1.getType());

  1205                         emit(smapper, out, "var @1 = @2, @2 = @3, @3 = @1;",

  1206                              tmp, vi1, vi2);

  1207                         smapper.pop(1);

  1208                     } else {

  1209                         smapper.pop(2);

  1210                         smapper.pushT(vi1.getType());

  1211                         smapper.pushT(vi2.getType());

  1212                     }

  1213                     break;

  1214                 }

  1215                 case opc_bipush:

  1216                     smapper.assign(out, VarType.INTEGER,

  1217                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1218                     break;

  1219                 case opc_sipush:

  1220                     smapper.assign(out, VarType.INTEGER,

  1221                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1222                     );

  1223                     i += 2;

  1224                     break;

  1225                 case opc_getfield: {

  1226                     int indx = readUShortArg(byteCodes, i);

  1227                     String[] fi = jc.getFieldInfoName(indx);

  1228                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1229                     final String mangleClass = mangleClassName(fi[0]);

  1230                     final String mangleClassAccess = accessClass(mangleClass);

  1231                     smapper.replace(out, type, "@3(false)._@2.call(@1)",

  1232                          smapper.getA(0),

  1233                          fi[1], mangleClassAccess

  1234                     );

  1235                     i += 2;

  1236                     break;

  1237                 }

  1238                 case opc_putfield: {

  1239                     int indx = readUShortArg(byteCodes, i);

  1240                     String[] fi = jc.getFieldInfoName(indx);

  1241                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1242                     final String mangleClass = mangleClassName(fi[0]);

  1243                     final String mangleClassAccess = accessClass(mangleClass);

  1244                     emit(smapper, out, "@4(false)._@3.call(@2, @1);",

  1245                          smapper.popT(type),

  1246                          smapper.popA(), fi[1],

  1247                          mangleClassAccess

  1248                     );

  1249                     i += 2;

  1250                     break;

  1251                 }

  1252                 case opc_getstatic: {

  1253                     int indx = readUShortArg(byteCodes, i);

  1254                     String[] fi = jc.getFieldInfoName(indx);

  1255                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1256                     String ac = accessClass(mangleClassName(fi[0]));

  1257                     smapper.assign(out, type, ac + "(false)._" + fi[1] + "()");

  1258                     i += 2;

  1259                     addReference(fi[0]);

  1260                     break;

  1261                 }

  1262                 case opc_putstatic: {

  1263                     int indx = readUShortArg(byteCodes, i);

  1264                     String[] fi = jc.getFieldInfoName(indx);

  1265                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1266                     emit(smapper, out, "@1(false)._@2(@3);",

  1267                          accessClass(mangleClassName(fi[0])), fi[1],

  1268                          smapper.popT(type));

  1269                     i += 2;

  1270                     addReference(fi[0]);

  1271                     break;

  1272                 }

  1273                 case opc_checkcast: {

  1274                     int indx = readUShortArg(byteCodes, i);

  1275                     generateCheckcast(indx, smapper);

  1276                     i += 2;

  1277                     break;

  1278                 }

  1279                 case opc_instanceof: {

  1280                     int indx = readUShortArg(byteCodes, i);

  1281                     generateInstanceOf(indx, smapper);

  1282                     i += 2;

  1283                     break;

  1284                 }

  1285                 case opc_athrow: {

  1286                     final CharSequence v = smapper.popA();

  1287                     smapper.clear();

  1289                     emit(smapper, out, "{ var @1 = @2; throw @2; }",

  1290                          smapper.pushA(), v);

  1291                     break;

  1292                 }

  1294                 case opc_monitorenter: {

  1295                     debug("/* monitor enter */");

  1296                     smapper.popA();

  1297                     break;

  1298                 }

  1300                 case opc_monitorexit: {

  1301                     debug("/* monitor exit */");

  1302                     smapper.popA();

  1303                     break;

  1304                 }

  1306                 case opc_wide:

  1307                     wide = true;

  1308                     break;

  1310                 default: {

  1311                     wide = false;

  1312                     emit(smapper, out, "throw 'unknown bytecode @1';",

  1313                          Integer.toString(c));

  1314                 }

  1315             }

  1316             if (debug(" //")) {

  1317                 generateByteCodeComment(prev, i, byteCodes);

  1318             }

  1319             out.append("\n");

  1320         }

  1321         if (previousTrap != null) {

  1322             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1323         }

  1324         if (didBranches) {

  1325             out.append("\n    }\n");

  1326         }

  1327         while (openBraces-- > 0) {

  1328             out.append('}');

  1329         }

  1330         out.append("\n};");

  1331     }

  1333     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1334         int i, final CharSequence v2, final CharSequence v1,

  1335         final String test, int topMostLabel

  1336     ) throws IOException {

  1337         mapper.flush(out);

  1338         int indx = i + readShortArg(byteCodes, i);

  1339         out.append("if ((").append(v1)

  1340            .append(") ").append(test).append(" (")

  1341            .append(v2).append(")) ");

  1342         goTo(out, i, indx, topMostLabel);

  1343         return i + 2;

  1344     }

  1346     private int readInt4(byte[] byteCodes, int offset) {

  1347         final int d = byteCodes[offset + 0] << 24;

  1348         final int c = byteCodes[offset + 1] << 16;

  1349         final int b = byteCodes[offset + 2] << 8;

  1350         final int a = byteCodes[offset + 3];

  1351         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1352     }

  1353     private static int readUByte(byte[] byteCodes, int offset) {

  1354         return byteCodes[offset] & 0xff;

  1355     }

  1357     private static int readUShort(byte[] byteCodes, int offset) {

  1358         return ((byteCodes[offset] & 0xff) << 8)

  1359                     | (byteCodes[offset + 1] & 0xff);

  1360     }

  1361     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1362         return readUShort(byteCodes, offsetInstruction + 1);

  1363     }

  1365     private static int readShort(byte[] byteCodes, int offset) {

  1366         int signed = byteCodes[offset];

  1367         byte b0 = (byte)signed;

  1368         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1369     }

  1370     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1371         return readShort(byteCodes, offsetInstruction + 1);

  1372     }

  1374     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1375         int i = 0;

  1376         Boolean count = null;

  1377         boolean array = false;

  1378         sig.append("__");

  1379         int firstPos = sig.length();

  1380         while (i < descriptor.length()) {

  1381             char ch = descriptor.charAt(i++);

  1382             switch (ch) {

  1383                 case '(':

  1384                     count = true;

  1385                     continue;

  1386                 case ')':

  1387                     count = false;

  1388                     continue;

  1389                 case 'B':

  1390                 case 'C':

  1391                 case 'D':

  1392                 case 'F':

  1393                 case 'I':

  1394                 case 'J':

  1395                 case 'S':

  1396                 case 'Z':

  1397                     if (count) {

  1398                         if (array) {

  1399                             sig.append("_3");

  1400                         }

  1401                         sig.append(ch);

  1402                         if (ch == 'J' || ch == 'D') {

  1403                             cnt.append('1');

  1404                         } else {

  1405                             cnt.append('0');

  1406                         }

  1407                     } else {

  1408                         sig.insert(firstPos, ch);

  1409                         if (array) {

  1410                             returnType[0] = '[';

  1411                             sig.insert(firstPos, "_3");

  1412                         } else {

  1413                             returnType[0] = ch;

  1414                         }

  1415                     }

  1416                     array = false;

  1417                     continue;

  1418                 case 'V':

  1419                     assert !count;

  1420                     returnType[0] = 'V';

  1421                     sig.insert(firstPos, 'V');

  1422                     continue;

  1423                 case 'L':

  1424                     int next = descriptor.indexOf(';', i);

  1425                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1426                     if (count) {

  1427                         if (array) {

  1428                             sig.append("_3");

  1429                         }

  1430                         sig.append(realSig);

  1431                         cnt.append('0');

  1432                     } else {

  1433                         sig.insert(firstPos, realSig);

  1434                         if (array) {

  1435                             sig.insert(firstPos, "_3");

  1436                         }

  1437                         returnType[0] = 'L';

  1438                     }

  1439                     i = next + 1;

  1440                     array = false;

  1441                     continue;

  1442                 case '[':

  1443                     array = true;

  1444                     continue;

  1445                 default:

  1446                     throw new IllegalStateException("Invalid char: " + ch);

  1447             }

  1448         }

  1449     }

  1451     static String mangleSig(String sig) {

  1452         return mangleSig(sig, 0, sig.length());

  1453     }

  1455     private static String mangleMethodName(String name) {

  1456         StringBuilder sb = new StringBuilder(name.length() * 2);

  1457         int last = name.length();

  1458         for (int i = 0; i < last; i++) {

  1459             final char ch = name.charAt(i);

  1460             switch (ch) {

  1461                 case '_': sb.append("_1"); break;

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

  1463             }

  1464         }

  1465         return sb.toString();

  1466     }

  1467     private static String mangleSig(String txt, int first, int last) {

  1468         StringBuilder sb = new StringBuilder((last - first) * 2);

  1469         for (int i = first; i < last; i++) {

  1470             final char ch = txt.charAt(i);

  1471             switch (ch) {

  1472                 case '/': sb.append('_'); break;

  1473                 case '_': sb.append("_1"); break;

  1474                 case ';': sb.append("_2"); break;

  1475                 case '[': sb.append("_3"); break;

  1476                 default: sb.append(ch); break;

  1477             }

  1478         }

  1479         return sb.toString();

  1480     }

  1482     private static String mangleClassName(String name) {

  1483         return mangleSig(name);

  1484     }

  1486     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1487         StringBuilder name = new StringBuilder();

  1488         if ("<init>".equals(m.getName())) { // NOI18N

  1489             name.append("cons"); // NOI18N

  1490         } else if ("<clinit>".equals(m.getName())) { // NOI18N

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

  1492         } else {

  1493             name.append(mangleMethodName(m.getName()));

  1494         }

  1496         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1497         return name.toString();

  1498     }

  1500     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1501         StringBuilder name = new StringBuilder();

  1502         String descr = mi[2];//mi.getDescriptor();

  1503         String nm= mi[1];

  1504         if ("<init>".equals(nm)) { // NOI18N

  1505             name.append("cons"); // NOI18N

  1506         } else {

  1507             name.append(mangleMethodName(nm));

  1508         }

  1509         countArgs(descr, returnType, name, cnt);

  1510         return name.toString();

  1511     }

  1513     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1514     throws IOException {

  1515         int methodIndex = readUShortArg(byteCodes, i);

  1516         String[] mi = jc.getFieldInfoName(methodIndex);

  1517         char[] returnType = { 'V' };

  1518         StringBuilder cnt = new StringBuilder();

  1519         String mn = findMethodName(mi, cnt, returnType);

  1521         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1522         final CharSequence[] vars = new CharSequence[numArguments];

  1524         for (int j = numArguments - 1; j >= 0; --j) {

  1525             vars[j] = mapper.popValue();

  1526         }

  1528         if (returnType[0] != 'V') {

  1529             out.append("var ")

  1530                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1531                .append(" = ");

  1532         }

  1534         final String in = mi[0];

  1535         out.append(accessClass(mangleClassName(in)));

  1536         out.append("(false).");

  1537         if (mn.startsWith("cons_")) {

  1538             out.append("constructor.");

  1539         }

  1540         out.append(mn);

  1541         if (isStatic) {

  1542             out.append('(');

  1543         } else {

  1544             out.append(".call(");

  1545         }

  1546         if (numArguments > 0) {

  1547             out.append(vars[0]);

  1548             for (int j = 1; j < numArguments; ++j) {

  1549                 out.append(", ");

  1550                 out.append(vars[j]);

  1551             }

  1552         }

  1553         out.append(");");

  1554         i += 2;

  1555         addReference(in);

  1556         return i;

  1557     }

  1558     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1559     throws IOException {

  1560         int methodIndex = readUShortArg(byteCodes, i);

  1561         String[] mi = jc.getFieldInfoName(methodIndex);

  1562         char[] returnType = { 'V' };

  1563         StringBuilder cnt = new StringBuilder();

  1564         String mn = findMethodName(mi, cnt, returnType);

  1566         final int numArguments = cnt.length() + 1;

  1567         final CharSequence[] vars = new CharSequence[numArguments];

  1569         for (int j = numArguments - 1; j >= 0; --j) {

  1570             vars[j] = mapper.popValue();

  1571         }

  1573         if (returnType[0] != 'V') {

  1574             out.append("var ")

  1575                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1576                .append(" = ");

  1577         }

  1579         out.append(vars[0]).append('.');

  1580         out.append(mn);

  1581         out.append('(');

  1582         String sep = "";

  1583         for (int j = 1; j < numArguments; ++j) {

  1584             out.append(sep);

  1585             out.append(vars[j]);

  1586             sep = ", ";

  1587         }

  1588         out.append(");");

  1589         i += 2;

  1590         return i;

  1591     }

  1593     private void addReference(String cn) throws IOException {

  1594         if (requireReference(cn)) {

  1595             debug(" /* needs " + cn + " */");

  1596         }

  1597     }

  1599     private void outType(String d, StringBuilder out) {

  1600         int arr = 0;

  1601         while (d.charAt(0) == '[') {

  1602             out.append('A');

  1603             d = d.substring(1);

  1604         }

  1605         if (d.charAt(0) == 'L') {

  1606             assert d.charAt(d.length() - 1) == ';';

  1607             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1608         } else {

  1609             out.append(d);

  1610         }

  1611     }

  1613     private String encodeConstant(int entryIndex) throws IOException {

  1614         String[] classRef = { null };

  1615         String s = jc.stringValue(entryIndex, classRef);

  1616         if (classRef[0] != null) {

  1617             if (classRef[0].startsWith("[")) {

  1618                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "')";

  1619             } else {

  1620                 addReference(classRef[0]);

  1621                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1622             }

  1623         }

  1624         return s;

  1625     }

  1627     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1628         byte[] arr = m.findAnnotationData(true);

  1629         if (arr == null) {

  1630             return null;

  1631         }

  1632         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1633         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1634         class P extends AnnotationParser {

  1635             public P() {

  1636                 super(false, true);

  1637             }

  1639             int cnt;

  1640             String[] args = new String[30];

  1641             String body;

  1642             boolean javacall;

  1643             boolean html4j;

  1645             @Override

  1646             protected void visitAttr(String type, String attr, String at, String value) {

  1647                 if (type.equals(jvmType)) {

  1648                     if ("body".equals(attr)) {

  1649                         body = value;

  1650                     } else if ("args".equals(attr)) {

  1651                         args[cnt++] = value;

  1652                     } else {

  1653                         throw new IllegalArgumentException(attr);

  1654                     }

  1655                 }

  1656                 if (type.equals(htmlType)) {

  1657                     html4j = true;

  1658                     if ("body".equals(attr)) {

  1659                         body = value;

  1660                     } else if ("args".equals(attr)) {

  1661                         args[cnt++] = value;

  1662                     } else if ("javacall".equals(attr)) {

  1663                         javacall = "1".equals(value);

  1664                     } else {

  1665                         throw new IllegalArgumentException(attr);

  1666                     }

  1667                 }

  1668             }

  1669         }

  1670         P p = new P();

  1671         p.parse(arr, jc);

  1672         if (p.body == null) {

  1673             return null;

  1674         }

  1675         StringBuilder cnt = new StringBuilder();

  1676         final String mn = findMethodName(m, cnt);

  1677         out.append(destObject).append(".").append(mn);

  1678         out.append(" = function(");

  1679         String space = "";

  1680         int index = 0;

  1681         StringBuilder toValue = new StringBuilder();

  1682         for (int i = 0; i < cnt.length(); i++) {

  1683             out.append(space);

  1684             space = outputArg(out, p.args, index);

  1685             if (p.html4j && space.length() > 0) {

  1686                 toValue.append("\n  ").append(p.args[index]).append(" = vm.org_apidesign_bck2brwsr_emul_lang_System(false).toJS(").

  1687                     append(p.args[index]).append(");");

  1688             }

  1689             index++;

  1690         }

  1691         out.append(") {").append("\n");

  1692         out.append(toValue.toString());

  1693         if (p.javacall) {

  1694             int lastSlash = jc.getClassName().lastIndexOf('/');

  1695             final String pkg = jc.getClassName().substring(0, lastSlash);

  1696             out.append(mangleCallbacks(pkg, p.body));

  1697             requireReference(pkg + "/$JsCallbacks$");

  1698         } else {

  1699             out.append(p.body);

  1700         }

  1701         out.append("\n}\n");

  1702         return mn;

  1703     }

  1705     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1706         StringBuilder sb = new StringBuilder();

  1707         int pos = 0;

  1708         for (;;) {

  1709             int next = body.indexOf(".@", pos);

  1710             if (next == -1) {

  1711                 sb.append(body.substring(pos));

  1712                 body = sb.toString();

  1713                 break;

  1714             }

  1715             int ident = next;

  1716             while (ident > 0) {

  1717                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1718                     ident++;

  1719                     break;

  1720                 }

  1721             }

  1722             String refId = body.substring(ident, next);

  1724             sb.append(body.substring(pos, ident));

  1726             int sigBeg = body.indexOf('(', next);

  1727             int sigEnd = body.indexOf(')', sigBeg);

  1728             int colon4 = body.indexOf("::", next);

  1729             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1730                 throw new IllegalStateException("Malformed body " + body);

  1731             }

  1732             String fqn = body.substring(next + 2, colon4);

  1733             String method = body.substring(colon4 + 2, sigBeg);

  1734             String params = body.substring(sigBeg, sigEnd + 1);

  1736             int paramBeg = body.indexOf('(', sigEnd + 1);

  1738             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1739             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1740             sb.append("(").append(refId);

  1741             if (body.charAt(paramBeg + 1) != ')') {

  1742                 sb.append(",");

  1743             }

  1744             pos = paramBeg + 1;

  1745         }

  1746         sb = null;

  1747         pos = 0;

  1748         for (;;) {

  1749             int next = body.indexOf("@", pos);

  1750             if (next == -1) {

  1751                 if (sb == null) {

  1752                     return body;

  1753                 }

  1754                 sb.append(body.substring(pos));

  1755                 return sb;

  1756             }

  1757             if (sb == null) {

  1758                 sb = new StringBuilder();

  1759             }

  1761             sb.append(body.substring(pos, next));

  1763             int sigBeg = body.indexOf('(', next);

  1764             int sigEnd = body.indexOf(')', sigBeg);

  1765             int colon4 = body.indexOf("::", next);

  1766             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1767                 throw new IllegalStateException("Malformed body " + body);

  1768             }

  1769             String fqn = body.substring(next + 1, colon4);

  1770             String method = body.substring(colon4 + 2, sigBeg);

  1771             String params = body.substring(sigBeg, sigEnd + 1);

  1773             int paramBeg = body.indexOf('(', sigEnd + 1);

  1775             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1776             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1777             sb.append("(");

  1778             pos = paramBeg + 1;

  1779         }

  1780     }

  1782     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1783         if (params.startsWith("(")) {

  1784             params = params.substring(1);

  1785         }

  1786         if (params.endsWith(")")) {

  1787             params = params.substring(0, params.length() - 1);

  1788         }

  1789         StringBuilder sb = new StringBuilder();

  1790         final String fqnu = fqn.replace('.', '_');

  1791         final String rfqn = mangleClassName(fqnu);

  1792         final String rm = mangleMethodName(method);

  1793         final String srp;

  1794         {

  1795             StringBuilder pb = new StringBuilder();

  1796             int len = params.length();

  1797             int indx = 0;

  1798             while (indx < len) {

  1799                 char ch = params.charAt(indx);

  1800                 if (ch == '[' || ch == 'L') {

  1801                     pb.append("Ljava/lang/Object;");

  1802                     indx = params.indexOf(';', indx) + 1;

  1803                 } else {

  1804                     pb.append(ch);

  1805                     indx++;

  1806                 }

  1807             }

  1808             srp = mangleSig(pb.toString());

  1809         }

  1810         final String rp = mangleSig(params);

  1811         final String mrp = mangleMethodName(rp);

  1812         sb.append(rfqn).append("$").append(rm).

  1813             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1814         if (!isStatic) {

  1815             sb.append('L').append(fqnu).append("_2");

  1816         }

  1817         sb.append(srp);

  1818         return sb.toString();

  1819     }

  1821     private static String className(ClassData jc) {

  1822         //return jc.getName().getInternalName().replace('/', '_');

  1823         return mangleClassName(jc.getClassName());

  1824     }

  1826     private static String[] findAnnotation(

  1827         byte[] arr, ClassData cd, final String className,

  1828         final String... attrNames

  1829     ) throws IOException {

  1830         if (arr == null) {

  1831             return null;

  1832         }

  1833         final String[] values = new String[attrNames.length];

  1834         final boolean[] found = { false };

  1835         final String jvmType = "L" + className.replace('.', '/') + ";";

  1836         AnnotationParser ap = new AnnotationParser(false, true) {

  1837             @Override

  1838             protected void visitAttr(String type, String attr, String at, String value) {

  1839                 if (type.equals(jvmType)) {

  1840                     found[0] = true;

  1841                     for (int i = 0; i < attrNames.length; i++) {

  1842                         if (attrNames[i].equals(attr)) {

  1843                             values[i] = value;

  1844                         }

  1845                     }

  1846                 }

  1847             }

  1849         };

  1850         ap.parse(arr, cd);

  1851         return found[0] ? values : null;

  1852     }

  1854     private CharSequence initField(FieldData v) {

  1855         final String is = v.getInternalSig();

  1856         if (is.length() == 1) {

  1857             switch (is.charAt(0)) {

  1858                 case 'S':

  1859                 case 'J':

  1860                 case 'B':

  1861                 case 'Z':

  1862                 case 'C':

  1863                 case 'I': return " = 0;";

  1864                 case 'F':

  1865                 case 'D': return " = 0.0;";

  1866                 default:

  1867                     throw new IllegalStateException(is);

  1868             }

  1869         }

  1870         return " = null;";

  1871     }

  1873     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1874         AnnotationParser ap = new AnnotationParser(true, false) {

  1875             int[] cnt = new int[32];

  1876             int depth;

  1878             @Override

  1879             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1880                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1881                 requireReference(slashType);

  1883                 if (cnt[depth]++ > 0) {

  1884                     out.append(",");

  1885                 }

  1886                 if (top) {

  1887                     out.append('"').append(attrType).append("\" : ");

  1888                 }

  1889                 out.append("{\n");

  1890                 cnt[++depth] = 0;

  1891             }

  1893             @Override

  1894             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1895                 out.append("\n}\n");

  1896                 depth--;

  1897             }

  1899             @Override

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

  1901                 if (cnt[depth]++ > 0) {

  1902                     out.append(",\n");

  1903                 }

  1904                 cnt[++depth] = 0;

  1905                 if (attrName != null) {

  1906                     out.append(attrName).append(" : ");

  1907                 }

  1908                 if (type == '[') {

  1909                     out.append("[");

  1910                 }

  1911             }

  1913             @Override

  1914             protected void visitValueEnd(String attrName, char type) throws IOException {

  1915                 if (type == '[') {

  1916                     out.append("]");

  1917                 }

  1918                 depth--;

  1919             }

  1921             @Override

  1922             protected void visitAttr(String type, String attr, String attrType, String value)

  1923             throws IOException {

  1924                 if (attr == null && value == null) {

  1925                     return;

  1926                 }

  1927                 out.append(value);

  1928             }

  1930             @Override

  1931             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1932             throws IOException {

  1933                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1934                 requireReference(slashType);

  1936                 out.append(accessClass(mangleClassName(slashType)))

  1937                    .append("(false).constructor.fld_").append(value);

  1938             }

  1939         };

  1940         ap.parse(data, cd);

  1941     }

  1943     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1944         final String name = args[indx];

  1945         if (name == null) {

  1946             return "";

  1947         }

  1948         if (name.contains(",")) {

  1949             throw new IOException("Wrong parameter with ',': " + name);

  1950         }

  1951         out.append(name);

  1952         return ",";

  1953     }

  1955     final void emitNoFlush(

  1956         StackMapper sm,

  1957         final Appendable out,

  1958         final String format, final CharSequence... params

  1959     ) throws IOException {

  1960         emitImpl(out, format, params);

  1961     }

  1962     final void emit(

  1963         StackMapper sm,

  1964         final Appendable out,

  1965         final String format, final CharSequence... params

  1966     ) throws IOException {

  1967         sm.flush(out);

  1968         emitImpl(out, format, params);

  1969     }

  1970     static void emitImpl(final Appendable out,

  1971                              final String format,

  1972                              final CharSequence... params) throws IOException {

  1973         final int length = format.length();

  1975         int processed = 0;

  1976         int paramOffset = format.indexOf('@');

  1977         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1978             final char paramChar = format.charAt(paramOffset + 1);

  1979             if ((paramChar >= '1') && (paramChar <= '9')) {

  1980                 final int paramIndex = paramChar - '0' - 1;

  1982                 out.append(format, processed, paramOffset);

  1983                 out.append(params[paramIndex]);

  1985                 ++paramOffset;

  1986                 processed = paramOffset + 1;

  1987             }

  1989             paramOffset = format.indexOf('@', paramOffset + 1);

  1990         }

  1992         out.append(format, processed, length);

  1993     }

  1995     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1996         out.append("} catch (e) {\n");

  1997         int finallyPC = -1;

  1998         for (TrapData e : traps) {

  1999             if (e == null) {

  2000                 break;

  2001             }

  2002             if (e.catch_cpx != 0) { //not finally

  2003                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2004                 addReference(classInternalName);

  2005                 out.append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  2006                 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  2007                 out.append("var stA0 = e;");

  2008                 goTo(out, current, e.handler_pc, topMostLabel);

  2009                 out.append("}\n");

  2010             } else {

  2011                 finallyPC = e.handler_pc;

  2012             }

  2013         }

  2014         if (finallyPC == -1) {

  2015             out.append("throw e;");

  2016         } else {

  2017             out.append("var stA0 = e;");

  2018             goTo(out, current, finallyPC, topMostLabel);

  2019         }

  2020         out.append("\n}");

  2021     }

  2023     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2024         if (to < current) {

  2025             if (canBack < to) {

  2026                 out.append("{ gt = 0; continue X_" + to + "; }");

  2027             } else {

  2028                 out.append("{ gt = " + to + "; continue X_0; }");

  2029             }

  2030         } else {

  2031             out.append("{ gt = " + to + "; break IF; }");

  2032         }

  2033     }

  2035     private static void emitIf(

  2036         StackMapper sm,

  2037         Appendable out, String pattern,

  2038         CharSequence param,

  2039         int current, int to, int canBack

  2040     ) throws IOException {

  2041         sm.flush(out);

  2042         emitImpl(out, pattern, param);

  2043         goTo(out, current, to, canBack);

  2044     }

  2046     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2047         String jvmType;

  2048         switch (atype) {

  2049             case 4: jvmType = "[Z"; break;

  2050             case 5: jvmType = "[C"; break;

  2051             case 6: jvmType = "[F"; break;

  2052             case 7: jvmType = "[D"; break;

  2053             case 8: jvmType = "[B"; break;

  2054             case 9: jvmType = "[S"; break;

  2055             case 10: jvmType = "[I"; break;

  2056             case 11: jvmType = "[J"; break;

  2057             default: throw new IllegalStateException("Array type: " + atype);

  2058         }

  2059         emit(smapper, out, "var @2 = Array.alloc(true, '@3', @1);",

  2060              smapper.popI(), smapper.pushA(), jvmType);

  2061     }

  2063     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2064         String typeName = jc.getClassName(type);

  2065         if (typeName.startsWith("[")) {

  2066             typeName = "[" + typeName;

  2067         } else {

  2068             typeName = "[L" + typeName + ";";

  2069         }

  2070         emit(smapper, out, "var @2 = Array.alloc(false, '@3', @1);",

  2071              smapper.popI(), smapper.pushA(), typeName);

  2072     }

  2074     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2075         String typeName = jc.getClassName(type);

  2076         int dim = readUByte(byteCodes, ++i);

  2077         StringBuilder dims = new StringBuilder();

  2078         dims.append('[');

  2079         for (int d = 0; d < dim; d++) {

  2080             if (d != 0) {

  2081                 dims.insert(1, ",");

  2082             }

  2083             dims.insert(1, smapper.popI());

  2084         }

  2085         dims.append(']');

  2086         emit(smapper, out, "var @2 = Array.malloc('@3', @1, 0);",

  2087              dims.toString(), smapper.pushA(), typeName);

  2088         return i;

  2089     }

  2091     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2092         int table = i / 4 * 4 + 4;

  2093         int dflt = i + readInt4(byteCodes, table);

  2094         table += 4;

  2095         int low = readInt4(byteCodes, table);

  2096         table += 4;

  2097         int high = readInt4(byteCodes, table);

  2098         table += 4;

  2099         final CharSequence swVar = smapper.popValue();

  2100         smapper.flush(out);

  2101         out.append("switch (").append(swVar).append(") {\n");

  2102         while (low <= high) {

  2103             int offset = i + readInt4(byteCodes, table);

  2104             table += 4;

  2105             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  2106             low++;

  2107         }

  2108         out.append("  default: ");

  2109         goTo(out, i, dflt, topMostLabel);

  2110         out.append("\n}");

  2111         i = table - 1;

  2112         return i;

  2113     }

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

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

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

  2118         table += 4;

  2119         int n = readInt4(byteCodes, table);

  2120         table += 4;

  2121         final CharSequence swVar = smapper.popValue();

  2122         smapper.flush(out);

  2123         out.append("switch (").append(swVar).append(") {\n");

  2124         while (n-- > 0) {

  2125             int cnstnt = readInt4(byteCodes, table);

  2126             table += 4;

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

  2128             table += 4;

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

  2130         }

  2131         out.append("  default: ");

  2132         goTo(out, i, dflt, topMostLabel);

  2133         out.append("\n}");

  2134         i = table - 1;

  2135         return i;

  2136     }

  2138     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2139         final String type = jc.getClassName(indx);

  2140         if (!type.startsWith("[")) {

  2141             emit(smapper, out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  2142                  smapper.popA(), smapper.pushI(),

  2143                  type.replace('/', '_'));

  2144         } else {

  2145             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);",

  2146                 smapper.popA(), smapper.pushI(),

  2147                 type

  2148             );

  2149         }

  2150     }

  2152     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2153         final String type = jc.getClassName(indx);

  2154         if (!type.startsWith("[")) {

  2155             emitNoFlush(smapper, out,

  2156                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  2157                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2158         } else {

  2159             emitNoFlush(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);",

  2160                  smapper.getT(0, VarType.REFERENCE, false), type

  2161             );

  2162         }

  2163     }

  2165     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2166         for (int j = prev; j <= i; j++) {

  2167             out.append(" ");

  2168             final int cc = readUByte(byteCodes, j);

  2169             out.append(Integer.toString(cc));

  2170         }

  2171     }

  2172 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Tue, 18 Feb 2014 22:29:25 +0100
branch	ReducedStack
changeset 1479	be34f84e9d9f
parent 1477	b012365f8fb7
permissions	-rw-r--r--