hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@3d1612be40bc

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

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

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

    25  *

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

    27  */

    28 abstract class ByteCodeToJavaScript {

    29     private ClassData jc;

    30     final Appendable out;

    31     final ObfuscationDelegate obfuscationDelegate;

    33     protected ByteCodeToJavaScript(Appendable out) {

    34         this(out, ObfuscationDelegate.NULL);

    35     }

    37     protected ByteCodeToJavaScript(

    38             Appendable out, ObfuscationDelegate obfuscationDelegate) {

    39         this.out = out;

    40         this.obfuscationDelegate = obfuscationDelegate;

    41     }

    43     /* Collects additional required resources.

    44      *

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

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

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

    48      */

    49     protected abstract boolean requireReference(String internalClassName);

    51     /*

    52      * @param resourcePath name of resources to read

    53      */

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

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

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

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

    59      *

    60      * @param className suggested name of the class

    61      */

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

    63         return className + " = ";

    64     }

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

    66         return classOperation;

    67     }

    69     abstract String getVMObject();

    71     /** Prints out a debug message.

    72      *

    73      * @param msg the message

    74      * @return true if the message has been printed

    75      * @throws IOException

    76      */

    77     boolean debug(String msg) throws IOException {

    78         out.append(msg);

    79         return true;

    80     }

    82     /**

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

    84      *

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

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

    87      *

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

    89      */

    91     public String compile(InputStream classFile) throws IOException {

    92         this.jc = new ClassData(classFile);

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

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

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

    96             );

    97         }

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

    99         {

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

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

   102                 "resource", "processByteCode"

   103             );

   104             if (arr != null) {

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

   106                     requireScript(arr[0]);

   107                 }

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

   109                     return null;

   110                 }

   111             }

   112         }

   113         {

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

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

   116                 "value"

   117             );

   118             if (arr != null) {

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

   120                     requireScript(arr[0]);

   121                 } else {

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

   123                     requireScript(

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

   125                     );

   126                 }

   127             }

   128         }

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

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

   131             "container", "prototype"

   132         );

   133         StringArray toInitilize = new StringArray();

   134         final String className = className(jc);

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

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

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

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

   139         if (proto == null) {

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

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

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

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

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

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

   146         } else {

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

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

   149                 proto[0] = "p";

   150             }

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

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

   153         }

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

   155             if (v.isStatic()) {

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

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

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

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

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

   161             } else {

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

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

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

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

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

   167                    .append("; };");

   168             }

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

   171         }

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

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

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

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

   176                 "name", "value"

   177             );

   178             if (only != null) {

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

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

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

   182                 }

   183                 continue;

   184             }

   185             String destObject;

   186             String mn;

   187             out.append("\n    ");

   188             if (m.isStatic()) {

   189                 destObject = "c";

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

   191             } else {

   192                 if (m.isConstructor()) {

   193                     destObject = "CLS";

   194                     mn = generateInstanceMethod(destObject, m);

   195                 } else {

   196                     destObject = "c";

   197                     mn = generateInstanceMethod(destObject, m);

   198                 }

   199             }

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

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

   202             if (runAnno != null) {

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

   204                 generateAnno(jc, out, runAnno);

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

   206             }

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

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

   209         }

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

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

   212         String instOfName = "$instOf_" + className;

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

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

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

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

   217             requireReference(superInterface);

   218         }

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

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

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

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

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

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

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

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

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

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

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

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

   231         if (classAnno != null) {

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

   233             generateAnno(jc, out, classAnno);

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

   235         }

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

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

   238         }

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

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

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

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

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

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

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

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

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

   248                 "name", "value"

   249             );

   250             if (only != null) {

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

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

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

   254                 }

   255                 continue;

   256             }

   257             if (!v.isStatic()) {

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

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

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

   261             }

   262         }

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

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

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

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

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

   270 //        StringBuilder sb = new StringBuilder();

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

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

   273 //        }

   274         return "";

   275     }

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

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

   278         if (jsb != null) {

   279             return jsb;

   280         }

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

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

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

   284         }

   285         generateMethod(destObject, mn, m);

   286         return mn;

   287     }

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

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

   291         if (jsb != null) {

   292             return jsb;

   293         }

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

   295         generateMethod(destObject, mn, m);

   296         return mn;

   297     }

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

   300             throws IOException {

   301         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   302         TrapDataIterator trap = m.getTrapDataIterator();

   303         final LocalsMapper lmapper =

   304                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   311         if (byteCodes == null) {

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

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

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

   315             out.append("};");

   316             return;

   317         }

   319         final StackMapper smapper = new StackMapper();

   321         if (!m.isStatic()) {

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

   323         }

   325         int lastStackFrame = -1;

   326         TrapData[] previousTrap = null;

   327         boolean wide = false;

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

   330         int openBraces = 0;

   331         int topMostLabel = 0;

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

   333             int prev = i;

   334             stackMapIterator.advanceTo(i);

   335             boolean changeInCatch = trap.advanceTo(i);

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

   337                 if (previousTrap != null) {

   338                     generateCatch(previousTrap, i, topMostLabel);

   339                     previousTrap = null;

   340                 }

   341             }

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

   343                 if (i != 0) {

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

   345                 }

   346                 if (openBraces > 64) {

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

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

   349                     }

   350                     openBraces = 1;

   351                     topMostLabel = i;

   352                 }

   354                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   358                 openBraces++;

   359                 changeInCatch = true;

   360             } else {

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

   362             }

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

   364                 out.append("try {");

   365                 previousTrap = trap.current();

   366             }

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

   368             switch (c) {

   369                 case opc_aload_0:

   370                     emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(0));

   371                     break;

   372                 case opc_iload_0:

   373                     emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(0));

   374                     break;

   375                 case opc_lload_0:

   376                     emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(0));

   377                     break;

   378                 case opc_fload_0:

   379                     emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(0));

   380                     break;

   381                 case opc_dload_0:

   382                     emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(0));

   383                     break;

   384                 case opc_aload_1:

   385                     emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(1));

   386                     break;

   387                 case opc_iload_1:

   388                     emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(1));

   389                     break;

   390                 case opc_lload_1:

   391                     emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(1));

   392                     break;

   393                 case opc_fload_1:

   394                     emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(1));

   395                     break;

   396                 case opc_dload_1:

   397                     emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(1));

   398                     break;

   399                 case opc_aload_2:

   400                     emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(2));

   401                     break;

   402                 case opc_iload_2:

   403                     emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(2));

   404                     break;

   405                 case opc_lload_2:

   406                     emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(2));

   407                     break;

   408                 case opc_fload_2:

   409                     emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(2));

   410                     break;

   411                 case opc_dload_2:

   412                     emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(2));

   413                     break;

   414                 case opc_aload_3:

   415                     emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(3));

   416                     break;

   417                 case opc_iload_3:

   418                     emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(3));

   419                     break;

   420                 case opc_lload_3:

   421                     emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(3));

   422                     break;

   423                 case opc_fload_3:

   424                     emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(3));

   425                     break;

   426                 case opc_dload_3:

   427                     emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(3));

   428                     break;

   429                 case opc_iload: {

   430                     ++i;

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

   432                                           : readUByte(byteCodes, i);

   433                     wide = false;

   434                     emit(out, "var @1 = @2;",

   435                          smapper.pushI(), lmapper.getI(indx));

   436                     break;

   437                 }

   438                 case opc_lload: {

   439                     ++i;

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

   441                                           : readUByte(byteCodes, i);

   442                     wide = false;

   443                     emit(out, "var @1 = @2;",

   444                          smapper.pushL(), lmapper.getL(indx));

   445                     break;

   446                 }

   447                 case opc_fload: {

   448                     ++i;

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

   450                                           : readUByte(byteCodes, i);

   451                     wide = false;

   452                     emit(out, "var @1 = @2;",

   453                          smapper.pushF(), lmapper.getF(indx));

   454                     break;

   455                 }

   456                 case opc_dload: {

   457                     ++i;

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

   459                                           : readUByte(byteCodes, i);

   460                     wide = false;

   461                     emit(out, "var @1 = @2;",

   462                          smapper.pushD(), lmapper.getD(indx));

   463                     break;

   464                 }

   465                 case opc_aload: {

   466                     ++i;

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

   468                                           : readUByte(byteCodes, i);

   469                     wide = false;

   470                     emit(out, "var @1 = @2;",

   471                          smapper.pushA(), lmapper.getA(indx));

   472                     break;

   473                 }

   474                 case opc_istore: {

   475                     ++i;

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

   477                                           : readUByte(byteCodes, i);

   478                     wide = false;

   479                     emit(out, "var @1 = @2;",

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

   481                     break;

   482                 }

   483                 case opc_lstore: {

   484                     ++i;

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

   486                                           : readUByte(byteCodes, i);

   487                     wide = false;

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

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

   490                     break;

   491                 }

   492                 case opc_fstore: {

   493                     ++i;

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

   495                                           : readUByte(byteCodes, i);

   496                     wide = false;

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

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

   499                     break;

   500                 }

   501                 case opc_dstore: {

   502                     ++i;

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

   504                                           : readUByte(byteCodes, i);

   505                     wide = false;

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

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

   508                     break;

   509                 }

   510                 case opc_astore: {

   511                     ++i;

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

   513                                           : readUByte(byteCodes, i);

   514                     wide = false;

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

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

   517                     break;

   518                 }

   519                 case opc_astore_0:

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

   521                     break;

   522                 case opc_istore_0:

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

   524                     break;

   525                 case opc_lstore_0:

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

   527                     break;

   528                 case opc_fstore_0:

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

   530                     break;

   531                 case opc_dstore_0:

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

   533                     break;

   534                 case opc_astore_1:

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

   536                     break;

   537                 case opc_istore_1:

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

   539                     break;

   540                 case opc_lstore_1:

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

   542                     break;

   543                 case opc_fstore_1:

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

   545                     break;

   546                 case opc_dstore_1:

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

   548                     break;

   549                 case opc_astore_2:

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

   551                     break;

   552                 case opc_istore_2:

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

   554                     break;

   555                 case opc_lstore_2:

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

   557                     break;

   558                 case opc_fstore_2:

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

   560                     break;

   561                 case opc_dstore_2:

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

   563                     break;

   564                 case opc_astore_3:

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

   566                     break;

   567                 case opc_istore_3:

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

   569                     break;

   570                 case opc_lstore_3:

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

   572                     break;

   573                 case opc_fstore_3:

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

   575                     break;

   576                 case opc_dstore_3:

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

   578                     break;

   579                 case opc_iadd:

   580                     emit(out, "@1 = @1.add32(@2);", smapper.getI(1), smapper.popI());

   581                     break;

   582                 case opc_ladd:

   583                     emit(out, "@1 = @1.add64(@2);", smapper.getL(1), smapper.popL());

   584                     break;

   585                 case opc_fadd:

   586                     emit(out, "@1 += @2;", smapper.getF(1), smapper.popF());

   587                     break;

   588                 case opc_dadd:

   589                     emit(out, "@1 += @2;", smapper.getD(1), smapper.popD());

   590                     break;

   591                 case opc_isub:

   592                     emit(out, "@1 = @1.sub32(@2);", smapper.getI(1), smapper.popI());

   593                     break;

   594                 case opc_lsub:

   595                     emit(out, "@1 = @1.sub64(@2);", smapper.getL(1), smapper.popL());

   596                     break;

   597                 case opc_fsub:

   598                     emit(out, "@1 -= @2;", smapper.getF(1), smapper.popF());

   599                     break;

   600                 case opc_dsub:

   601                     emit(out, "@1 -= @2;", smapper.getD(1), smapper.popD());

   602                     break;

   603                 case opc_imul:

   604                     emit(out, "@1 = @1.mul32(@2);", smapper.getI(1), smapper.popI());

   605                     break;

   606                 case opc_lmul:

   607                     emit(out, "@1 = @1.mul64(@2);", smapper.getL(1), smapper.popL());

   608                     break;

   609                 case opc_fmul:

   610                     emit(out, "@1 *= @2;", smapper.getF(1), smapper.popF());

   611                     break;

   612                 case opc_dmul:

   613                     emit(out, "@1 *= @2;", smapper.getD(1), smapper.popD());

   614                     break;

   615                 case opc_idiv:

   616                     emit(out, "@1 = @1.div32(@2);",

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

   618                     break;

   619                 case opc_ldiv:

   620                     emit(out, "@1 = @1.div64(@2);",

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

   622                     break;

   623                 case opc_fdiv:

   624                     emit(out, "@1 /= @2;", smapper.getF(1), smapper.popF());

   625                     break;

   626                 case opc_ddiv:

   627                     emit(out, "@1 /= @2;", smapper.getD(1), smapper.popD());

   628                     break;

   629                 case opc_irem:

   630                     emit(out, "@1 = @1.mod32(@2);",

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

   632                     break;

   633                 case opc_lrem:

   634                     emit(out, "@1 = @1.mod64(@2);",

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

   636                     break;

   637                 case opc_frem:

   638                     emit(out, "@1 %= @2;", smapper.getF(1), smapper.popF());

   639                     break;

   640                 case opc_drem:

   641                     emit(out, "@1 %= @2;", smapper.getD(1), smapper.popD());

   642                     break;

   643                 case opc_iand:

   644                     emit(out, "@1 &= @2;", smapper.getI(1), smapper.popI());

   645                     break;

   646                 case opc_land:

   647                     emit(out, "@1 = @1.and64(@2);", smapper.getL(1), smapper.popL());

   648                     break;

   649                 case opc_ior:

   650                     emit(out, "@1 |= @2;", smapper.getI(1), smapper.popI());

   651                     break;

   652                 case opc_lor:

   653                     emit(out, "@1 = @1.or64(@2);", smapper.getL(1), smapper.popL());

   654                     break;

   655                 case opc_ixor:

   656                     emit(out, "@1 ^= @2;", smapper.getI(1), smapper.popI());

   657                     break;

   658                 case opc_lxor:

   659                     emit(out, "@1 = @1.xor64(@2);", smapper.getL(1), smapper.popL());

   660                     break;

   661                 case opc_ineg:

   662                     emit(out, "@1 = @1.neg32();", smapper.getI(0));

   663                     break;

   664                 case opc_lneg:

   665                     emit(out, "@1 = @1.neg64();", smapper.getL(0));

   666                     break;

   667                 case opc_fneg:

   668                     emit(out, "@1 = -@1;", smapper.getF(0));

   669                     break;

   670                 case opc_dneg:

   671                     emit(out, "@1 = -@1;", smapper.getD(0));

   672                     break;

   673                 case opc_ishl:

   674                     emit(out, "@1 <<= @2;", smapper.getI(1), smapper.popI());

   675                     break;

   676                 case opc_lshl:

   677                     emit(out, "@1 = @1.shl64(@2);", smapper.getL(1), smapper.popI());

   678                     break;

   679                 case opc_ishr:

   680                     emit(out, "@1 >>= @2;", smapper.getI(1), smapper.popI());

   681                     break;

   682                 case opc_lshr:

   683                     emit(out, "@1 = @1.shr64(@2);", smapper.getL(1), smapper.popI());

   684                     break;

   685                 case opc_iushr:

   686                     emit(out, "@1 >>>= @2;", smapper.getI(1), smapper.popI());

   687                     break;

   688                 case opc_lushr:

   689                     emit(out, "@1 = @1.ushr64(@2);", smapper.getL(1), smapper.popI());

   690                     break;

   691                 case opc_iinc: {

   692                     ++i;

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

   694                                              : readUByte(byteCodes, i);

   695                     ++i;

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

   697                                             : byteCodes[i];

   698                     wide = false;

   699                     if (incrBy == 1) {

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

   701                     } else {

   702                         emit(out, "@1 += @2;",

   703                              lmapper.getI(varIndx),

   704                              Integer.toString(incrBy));

   705                     }

   706                     break;

   707                 }

   708                 case opc_return:

   709                     emit(out, "return;");

   710                     break;

   711                 case opc_ireturn:

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

   713                     break;

   714                 case opc_lreturn:

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

   716                     break;

   717                 case opc_freturn:

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

   719                     break;

   720                 case opc_dreturn:

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

   722                     break;

   723                 case opc_areturn:

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

   725                     break;

   726                 case opc_i2l:

   727                     emit(out, "var @2 = @1;", smapper.popI(), smapper.pushL());

   728                     break;

   729                 case opc_i2f:

   730                     emit(out, "var @2 = @1;", smapper.popI(), smapper.pushF());

   731                     break;

   732                 case opc_i2d:

   733                     emit(out, "var @2 = @1;", smapper.popI(), smapper.pushD());

   734                     break;

   735                 case opc_l2i:

   736                     emit(out, "var @2 = @1.toInt32();", smapper.popL(), smapper.pushI());

   737                     break;

   738                     // max int check?

   739                 case opc_l2f:

   740                     emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushF());

   741                     break;

   742                 case opc_l2d:

   743                     emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushD());

   744                     break;

   745                 case opc_f2d:

   746                     emit(out, "var @2 = @1;", smapper.popF(), smapper.pushD());

   747                     break;

   748                 case opc_d2f:

   749                     emit(out, "var @2 = @1;", smapper.popD(), smapper.pushF());

   750                     break;

   751                 case opc_f2i:

   752                     emit(out, "var @2 = @1.toInt32();",

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

   754                     break;

   755                 case opc_f2l:

   756                     emit(out, "var @2 = @1.toLong();",

   757                          smapper.popF(), smapper.pushL());

   758                     break;

   759                 case opc_d2i:

   760                     emit(out, "var @2 = @1.toInt32();",

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

   762                     break;

   763                 case opc_d2l:

   764                     emit(out, "var @2 = @1.toLong();",

   765                          smapper.popD(), smapper.pushL());

   766                     break;

   767                 case opc_i2b:

   768                     emit(out, "var @1 = @1.toInt8();", smapper.getI(0));

   769                     break;

   770                 case opc_i2c:

   771                     out.append("{ /* number conversion */ }");

   772                     break;

   773                 case opc_i2s:

   774                     emit(out, "var @1 = @1.toInt16();", smapper.getI(0));

   775                     break;

   776                 case opc_aconst_null:

   777                     emit(out, "var @1 = null;", smapper.pushA());

   778                     break;

   779                 case opc_iconst_m1:

   780                     emit(out, "var @1 = -1;", smapper.pushI());

   781                     break;

   782                 case opc_iconst_0:

   783                     emit(out, "var @1 = 0;", smapper.pushI());

   784                     break;

   785                 case opc_dconst_0:

   786                     emit(out, "var @1 = 0;", smapper.pushD());

   787                     break;

   788                 case opc_lconst_0:

   789                     emit(out, "var @1 = 0;", smapper.pushL());

   790                     break;

   791                 case opc_fconst_0:

   792                     emit(out, "var @1 = 0;", smapper.pushF());

   793                     break;

   794                 case opc_iconst_1:

   795                     emit(out, "var @1 = 1;", smapper.pushI());

   796                     break;

   797                 case opc_lconst_1:

   798                     emit(out, "var @1 = 1;", smapper.pushL());

   799                     break;

   800                 case opc_fconst_1:

   801                     emit(out, "var @1 = 1;", smapper.pushF());

   802                     break;

   803                 case opc_dconst_1:

   804                     emit(out, "var @1 = 1;", smapper.pushD());

   805                     break;

   806                 case opc_iconst_2:

   807                     emit(out, "var @1 = 2;", smapper.pushI());

   808                     break;

   809                 case opc_fconst_2:

   810                     emit(out, "var @1 = 2;", smapper.pushF());

   811                     break;

   812                 case opc_iconst_3:

   813                     emit(out, "var @1 = 3;", smapper.pushI());

   814                     break;

   815                 case opc_iconst_4:

   816                     emit(out, "var @1 = 4;", smapper.pushI());

   817                     break;

   818                 case opc_iconst_5:

   819                     emit(out, "var @1 = 5;", smapper.pushI());

   820                     break;

   821                 case opc_ldc: {

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

   823                     String v = encodeConstant(indx);

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

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

   826                     break;

   827                 }

   828                 case opc_ldc_w:

   829                 case opc_ldc2_w: {

   830                     int indx = readUShortArg(byteCodes, i);

   831                     i += 2;

   832                     String v = encodeConstant(indx);

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

   834                     if (type == VarType.LONG) {

   835                         final Long lv = new Long(v);

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

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

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

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

   840                     } else {

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

   842                     }

   843                     break;

   844                 }

   845                 case opc_lcmp:

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

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

   848                     break;

   849                 case opc_fcmpl:

   850                 case opc_fcmpg:

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

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

   853                     break;

   854                 case opc_dcmpl:

   855                 case opc_dcmpg:

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

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

   858                     break;

   859                 case opc_if_acmpeq:

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

   861                                    "===", topMostLabel);

   862                     break;

   863                 case opc_if_acmpne:

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

   865                                    "!==", topMostLabel);

   866                     break;

   867                 case opc_if_icmpeq:

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

   869                                    "==", topMostLabel);

   870                     break;

   871                 case opc_ifeq: {

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

   873                     emitIf(out, "if (@1 == 0) ",

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

   875                     i += 2;

   876                     break;

   877                 }

   878                 case opc_ifne: {

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

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

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

   882                     i += 2;

   883                     break;

   884                 }

   885                 case opc_iflt: {

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

   887                     emitIf(out, "if (@1 < 0) ",

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

   889                     i += 2;

   890                     break;

   891                 }

   892                 case opc_ifle: {

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

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

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

   896                     i += 2;

   897                     break;

   898                 }

   899                 case opc_ifgt: {

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

   901                     emitIf(out, "if (@1 > 0) ",

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

   903                     i += 2;

   904                     break;

   905                 }

   906                 case opc_ifge: {

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

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

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

   910                     i += 2;

   911                     break;

   912                 }

   913                 case opc_ifnonnull: {

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

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

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

   917                     i += 2;

   918                     break;

   919                 }

   920                 case opc_ifnull: {

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

   922                     emitIf(out, "if (@1 === null) ",

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

   924                     i += 2;

   925                     break;

   926                 }

   927                 case opc_if_icmpne:

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

   929                                    "!=", topMostLabel);

   930                     break;

   931                 case opc_if_icmplt:

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

   933                                    "<", topMostLabel);

   934                     break;

   935                 case opc_if_icmple:

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

   937                                    "<=", topMostLabel);

   938                     break;

   939                 case opc_if_icmpgt:

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

   941                                    ">", topMostLabel);

   942                     break;

   943                 case opc_if_icmpge:

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

   945                                    ">=", topMostLabel);

   946                     break;

   947                 case opc_goto: {

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

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

   950                     i += 2;

   951                     break;

   952                 }

   953                 case opc_lookupswitch: {

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

   955                     break;

   956                 }

   957                 case opc_tableswitch: {

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

   959                     break;

   960                 }

   961                 case opc_invokeinterface: {

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

   963                     break;

   964                 }

   965                 case opc_invokevirtual:

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

   967                     break;

   968                 case opc_invokespecial:

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

   970                     break;

   971                 case opc_invokestatic:

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

   973                     break;

   974                 case opc_new: {

   975                     int indx = readUShortArg(byteCodes, i);

   976                     String ci = jc.getClassName(indx);

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

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

   979                     addReference(ci);

   980                     i += 2;

   981                     break;

   982                 }

   983                 case opc_newarray:

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

   985                     generateNewArray(atype, smapper);

   986                     break;

   987                 case opc_anewarray: {

   988                     int type = readUShortArg(byteCodes, i);

   989                     i += 2;

   990                     generateANewArray(type, smapper);

   991                     break;

   992                 }

   993                 case opc_multianewarray: {

   994                     int type = readUShortArg(byteCodes, i);

   995                     i += 2;

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

   997                     break;

   998                 }

   999                 case opc_arraylength:

  1000                     emit(out, "var @2 = @1.length;",

  1001                          smapper.popA(), smapper.pushI());

  1002                     break;

  1003                 case opc_lastore:

  1004                     emit(out, "Array.at(@3, @2, @1);",

  1005                          smapper.popL(), smapper.popI(), smapper.popA());

  1006                     break;

  1007                 case opc_fastore:

  1008                     emit(out, "Array.at(@3, @2, @1);",

  1009                          smapper.popF(), smapper.popI(), smapper.popA());

  1010                     break;

  1011                 case opc_dastore:

  1012                     emit(out, "Array.at(@3, @2, @1);",

  1013                          smapper.popD(), smapper.popI(), smapper.popA());

  1014                     break;

  1015                 case opc_aastore:

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

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

  1018                     break;

  1019                 case opc_iastore:

  1020                 case opc_bastore:

  1021                 case opc_castore:

  1022                 case opc_sastore:

  1023                     emit(out, "Array.at(@3, @2, @1);",

  1024                          smapper.popI(), smapper.popI(), smapper.popA());

  1025                     break;

  1026                 case opc_laload:

  1027                     emit(out, "var @3 = Array.at(@2, @1);",

  1028                          smapper.popI(), smapper.popA(), smapper.pushL());

  1029                     break;

  1030                 case opc_faload:

  1031                     emit(out, "var @3 = Array.at(@2, @1);",

  1032                          smapper.popI(), smapper.popA(), smapper.pushF());

  1033                     break;

  1034                 case opc_daload:

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

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

  1037                     break;

  1038                 case opc_aaload:

  1039                     emit(out, "var @3 = Array.at(@2, @1);",

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

  1041                     break;

  1042                 case opc_iaload:

  1043                 case opc_baload:

  1044                 case opc_caload:

  1045                 case opc_saload:

  1046                     emit(out, "var @3 = Array.at(@2, @1);",

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

  1048                     break;

  1049                 case opc_pop:

  1050                 case opc_pop2:

  1051                     smapper.pop(1);

  1052                     debug("/* pop */");

  1053                     break;

  1054                 case opc_dup: {

  1055                     final Variable v = smapper.get(0);

  1056                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1057                     break;

  1058                 }

  1059                 case opc_dup2: {

  1060                     final Variable vi1 = smapper.get(0);

  1062                     if (vi1.isCategory2()) {

  1063                         emit(out, "var @1 = @2;",

  1064                              smapper.pushT(vi1.getType()), vi1);

  1065                     } else {

  1066                         final Variable vi2 = smapper.get(1);

  1067                         emit(out, "var @1 = @2, @3 = @4;",

  1068                              smapper.pushT(vi2.getType()), vi2,

  1069                              smapper.pushT(vi1.getType()), vi1);

  1070                     }

  1071                     break;

  1072                 }

  1073                 case opc_dup_x1: {

  1074                     final Variable vi1 = smapper.pop();

  1075                     final Variable vi2 = smapper.pop();

  1076                     final Variable vo3 = smapper.pushT(vi1.getType());

  1077                     final Variable vo2 = smapper.pushT(vi2.getType());

  1078                     final Variable vo1 = smapper.pushT(vi1.getType());

  1080                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1081                          vo1, vi1, vo2, vi2, vo3, vo1);

  1082                     break;

  1083                 }

  1084                 case opc_dup2_x1: {

  1085                     final Variable vi1 = smapper.pop();

  1086                     final Variable vi2 = smapper.pop();

  1088                     if (vi1.isCategory2()) {

  1089                         final Variable vo3 = smapper.pushT(vi1.getType());

  1090                         final Variable vo2 = smapper.pushT(vi2.getType());

  1091                         final Variable vo1 = smapper.pushT(vi1.getType());

  1093                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1094                              vo1, vi1, vo2, vi2, vo3, vo1);

  1095                     } else {

  1096                         final Variable vi3 = smapper.pop();

  1097                         final Variable vo5 = smapper.pushT(vi2.getType());

  1098                         final Variable vo4 = smapper.pushT(vi1.getType());

  1099                         final Variable vo3 = smapper.pushT(vi3.getType());

  1100                         final Variable vo2 = smapper.pushT(vi2.getType());

  1101                         final Variable vo1 = smapper.pushT(vi1.getType());

  1103                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1104                              vo1, vi1, vo2, vi2, vo3, vi3);

  1105                         emit(out, " @1 = @2, @3 = @4;",

  1106                              vo4, vo1, vo5, vo2);

  1107                     }

  1108                     break;

  1109                 }

  1110                 case opc_dup_x2: {

  1111                     final Variable vi1 = smapper.pop();

  1112                     final Variable vi2 = smapper.pop();

  1114                     if (vi2.isCategory2()) {

  1115                         final Variable vo3 = smapper.pushT(vi1.getType());

  1116                         final Variable vo2 = smapper.pushT(vi2.getType());

  1117                         final Variable vo1 = smapper.pushT(vi1.getType());

  1119                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1120                              vo1, vi1, vo2, vi2, vo3, vo1);

  1121                     } else {

  1122                         final Variable vi3 = smapper.pop();

  1123                         final Variable vo4 = smapper.pushT(vi1.getType());

  1124                         final Variable vo3 = smapper.pushT(vi3.getType());

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

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

  1128                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1129                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1130                     }

  1131                     break;

  1132                 }

  1133                 case opc_dup2_x2: {

  1134                     final Variable vi1 = smapper.pop();

  1135                     final Variable vi2 = smapper.pop();

  1137                     if (vi1.isCategory2()) {

  1138                         if (vi2.isCategory2()) {

  1139                             final Variable vo3 = smapper.pushT(vi1.getType());

  1140                             final Variable vo2 = smapper.pushT(vi2.getType());

  1141                             final Variable vo1 = smapper.pushT(vi1.getType());

  1143                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1144                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1145                         } else {

  1146                             final Variable vi3 = smapper.pop();

  1147                             final Variable vo4 = smapper.pushT(vi1.getType());

  1148                             final Variable vo3 = smapper.pushT(vi3.getType());

  1149                             final Variable vo2 = smapper.pushT(vi2.getType());

  1150                             final Variable vo1 = smapper.pushT(vi1.getType());

  1152                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1153                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1154                         }

  1155                     } else {

  1156                         final Variable vi3 = smapper.pop();

  1158                         if (vi3.isCategory2()) {

  1159                             final Variable vo5 = smapper.pushT(vi2.getType());

  1160                             final Variable vo4 = smapper.pushT(vi1.getType());

  1161                             final Variable vo3 = smapper.pushT(vi3.getType());

  1162                             final Variable vo2 = smapper.pushT(vi2.getType());

  1163                             final Variable vo1 = smapper.pushT(vi1.getType());

  1165                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1166                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1167                             emit(out, " @1 = @2, @3 = @4;",

  1168                                  vo4, vo1, vo5, vo2);

  1169                         } else {

  1170                             final Variable vi4 = smapper.pop();

  1171                             final Variable vo6 = smapper.pushT(vi2.getType());

  1172                             final Variable vo5 = smapper.pushT(vi1.getType());

  1173                             final Variable vo4 = smapper.pushT(vi4.getType());

  1174                             final Variable vo3 = smapper.pushT(vi3.getType());

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

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

  1178                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1179                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1180                             emit(out, " @1 = @2, @3 = @4;",

  1181                                  vo5, vo1, vo6, vo2);

  1182                         }

  1183                     }

  1184                     break;

  1185                 }

  1186                 case opc_swap: {

  1187                     final Variable vi1 = smapper.get(0);

  1188                     final Variable vi2 = smapper.get(1);

  1190                     if (vi1.getType() == vi2.getType()) {

  1191                         final Variable tmp = smapper.pushT(vi1.getType());

  1193                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1194                              tmp, vi1, vi2);

  1195                         smapper.pop(1);

  1196                     } else {

  1197                         smapper.pop(2);

  1198                         smapper.pushT(vi1.getType());

  1199                         smapper.pushT(vi2.getType());

  1200                     }

  1201                     break;

  1202                 }

  1203                 case opc_bipush:

  1204                     emit(out, "var @1 = @2;",

  1205                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1206                     break;

  1207                 case opc_sipush:

  1208                     emit(out, "var @1 = @2;",

  1209                          smapper.pushI(),

  1210                          Integer.toString(readShortArg(byteCodes, i)));

  1211                     i += 2;

  1212                     break;

  1213                 case opc_getfield: {

  1214                     int indx = readUShortArg(byteCodes, i);

  1215                     String[] fi = jc.getFieldInfoName(indx);

  1216                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1217                     final String mangleClass = mangleClassName(fi[0]);

  1218                     final String mangleClassAccess = accessClass(mangleClass);

  1219                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1220                          smapper.popA(),

  1221                          smapper.pushT(type), fi[1], mangleClassAccess

  1222                     );

  1223                     i += 2;

  1224                     break;

  1225                 }

  1226                 case opc_putfield: {

  1227                     int indx = readUShortArg(byteCodes, i);

  1228                     String[] fi = jc.getFieldInfoName(indx);

  1229                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1230                     final String mangleClass = mangleClassName(fi[0]);

  1231                     final String mangleClassAccess = accessClass(mangleClass);

  1232                     emit(out, "@4(false)._@3.call(@2, @1);",

  1233                          smapper.popT(type),

  1234                          smapper.popA(), fi[1],

  1235                          mangleClassAccess

  1236                     );

  1237                     i += 2;

  1238                     break;

  1239                 }

  1240                 case opc_getstatic: {

  1241                     int indx = readUShortArg(byteCodes, i);

  1242                     String[] fi = jc.getFieldInfoName(indx);

  1243                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1244                     emit(out, "var @1 = @2(false)._@3();",

  1245                          smapper.pushT(type),

  1246                          accessClass(mangleClassName(fi[0])), fi[1]);

  1247                     i += 2;

  1248                     addReference(fi[0]);

  1249                     break;

  1250                 }

  1251                 case opc_putstatic: {

  1252                     int indx = readUShortArg(byteCodes, i);

  1253                     String[] fi = jc.getFieldInfoName(indx);

  1254                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1255                     emit(out, "@1(false)._@2(@3);",

  1256                          accessClass(mangleClassName(fi[0])), fi[1],

  1257                          smapper.popT(type));

  1258                     i += 2;

  1259                     addReference(fi[0]);

  1260                     break;

  1261                 }

  1262                 case opc_checkcast: {

  1263                     int indx = readUShortArg(byteCodes, i);

  1264                     generateCheckcast(indx, smapper);

  1265                     i += 2;

  1266                     break;

  1267                 }

  1268                 case opc_instanceof: {

  1269                     int indx = readUShortArg(byteCodes, i);

  1270                     generateInstanceOf(indx, smapper);

  1271                     i += 2;

  1272                     break;

  1273                 }

  1274                 case opc_athrow: {

  1275                     final Variable v = smapper.popA();

  1276                     smapper.clear();

  1278                     emit(out, "{ var @1 = @2; throw @2; }",

  1279                          smapper.pushA(), v);

  1280                     break;

  1281                 }

  1283                 case opc_monitorenter: {

  1284                     out.append("/* monitor enter */");

  1285                     smapper.popA();

  1286                     break;

  1287                 }

  1289                 case opc_monitorexit: {

  1290                     out.append("/* monitor exit */");

  1291                     smapper.popA();

  1292                     break;

  1293                 }

  1295                 case opc_wide:

  1296                     wide = true;

  1297                     break;

  1299                 default: {

  1300                     wide = false;

  1301                     emit(out, "throw 'unknown bytecode @1';",

  1302                          Integer.toString(c));

  1303                 }

  1304             }

  1305             if (debug(" //")) {

  1306                 generateByteCodeComment(prev, i, byteCodes);

  1307             }

  1308             out.append("\n");

  1309         }

  1310         if (previousTrap != null) {

  1311             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1312         }

  1313         out.append("\n    }\n");

  1314         while (openBraces-- > 0) {

  1315             out.append('}');

  1316         }

  1317         out.append("\n};");

  1318     }

  1320     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1321         int indx = i + readShortArg(byteCodes, i);

  1322         out.append("if (").append(v1)

  1323            .append(' ').append(test).append(' ')

  1324            .append(v2).append(") ");

  1325         goTo(out, i, indx, topMostLabel);

  1326         return i + 2;

  1327     }

  1329     private int readInt4(byte[] byteCodes, int offset) {

  1330         final int d = byteCodes[offset + 0] << 24;

  1331         final int c = byteCodes[offset + 1] << 16;

  1332         final int b = byteCodes[offset + 2] << 8;

  1333         final int a = byteCodes[offset + 3];

  1334         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1335     }

  1336     private static int readUByte(byte[] byteCodes, int offset) {

  1337         return byteCodes[offset] & 0xff;

  1338     }

  1340     private static int readUShort(byte[] byteCodes, int offset) {

  1341         return ((byteCodes[offset] & 0xff) << 8)

  1342                     | (byteCodes[offset + 1] & 0xff);

  1343     }

  1344     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1345         return readUShort(byteCodes, offsetInstruction + 1);

  1346     }

  1348     private static int readShort(byte[] byteCodes, int offset) {

  1349         int signed = byteCodes[offset];

  1350         byte b0 = (byte)signed;

  1351         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1352     }

  1353     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1354         return readShort(byteCodes, offsetInstruction + 1);

  1355     }

  1357     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1358         int i = 0;

  1359         Boolean count = null;

  1360         boolean array = false;

  1361         sig.append("__");

  1362         int firstPos = sig.length();

  1363         while (i < descriptor.length()) {

  1364             char ch = descriptor.charAt(i++);

  1365             switch (ch) {

  1366                 case '(':

  1367                     count = true;

  1368                     continue;

  1369                 case ')':

  1370                     count = false;

  1371                     continue;

  1372                 case 'B':

  1373                 case 'C':

  1374                 case 'D':

  1375                 case 'F':

  1376                 case 'I':

  1377                 case 'J':

  1378                 case 'S':

  1379                 case 'Z':

  1380                     if (count) {

  1381                         if (array) {

  1382                             sig.append("_3");

  1383                         }

  1384                         sig.append(ch);

  1385                         if (ch == 'J' || ch == 'D') {

  1386                             cnt.append('1');

  1387                         } else {

  1388                             cnt.append('0');

  1389                         }

  1390                     } else {

  1391                         sig.insert(firstPos, ch);

  1392                         if (array) {

  1393                             returnType[0] = '[';

  1394                             sig.insert(firstPos, "_3");

  1395                         } else {

  1396                             returnType[0] = ch;

  1397                         }

  1398                     }

  1399                     array = false;

  1400                     continue;

  1401                 case 'V':

  1402                     assert !count;

  1403                     returnType[0] = 'V';

  1404                     sig.insert(firstPos, 'V');

  1405                     continue;

  1406                 case 'L':

  1407                     int next = descriptor.indexOf(';', i);

  1408                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1409                     if (count) {

  1410                         if (array) {

  1411                             sig.append("_3");

  1412                         }

  1413                         sig.append(realSig);

  1414                         cnt.append('0');

  1415                     } else {

  1416                         sig.insert(firstPos, realSig);

  1417                         if (array) {

  1418                             sig.insert(firstPos, "_3");

  1419                         }

  1420                         returnType[0] = 'L';

  1421                     }

  1422                     i = next + 1;

  1423                     array = false;

  1424                     continue;

  1425                 case '[':

  1426                     array = true;

  1427                     continue;

  1428                 default:

  1429                     throw new IllegalStateException("Invalid char: " + ch);

  1430             }

  1431         }

  1432     }

  1434     static String mangleSig(String sig) {

  1435         return mangleSig(sig, 0, sig.length());

  1436     }

  1438     private static String mangleMethodName(String name) {

  1439         StringBuilder sb = new StringBuilder(name.length() * 2);

  1440         int last = name.length();

  1441         for (int i = 0; i < last; i++) {

  1442             final char ch = name.charAt(i);

  1443             switch (ch) {

  1444                 case '_': sb.append("_1"); break;

  1445                 default: sb.append(ch); break;

  1446             }

  1447         }

  1448         return sb.toString();

  1449     }

  1450     private static String mangleSig(String txt, int first, int last) {

  1451         StringBuilder sb = new StringBuilder((last - first) * 2);

  1452         for (int i = first; i < last; i++) {

  1453             final char ch = txt.charAt(i);

  1454             switch (ch) {

  1455                 case '/': sb.append('_'); break;

  1456                 case '_': sb.append("_1"); break;

  1457                 case ';': sb.append("_2"); break;

  1458                 case '[': sb.append("_3"); break;

  1459                 default: sb.append(ch); break;

  1460             }

  1461         }

  1462         return sb.toString();

  1463     }

  1465     private static String mangleClassName(String name) {

  1466         return mangleSig(name);

  1467     }

  1469     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1470         StringBuilder name = new StringBuilder();

  1471         if ("<init>".equals(m.getName())) { // NOI18N

  1472             name.append("cons"); // NOI18N

  1473         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1474             name.append("class"); // NOI18N

  1475         } else {

  1476             name.append(mangleMethodName(m.getName()));

  1477         }

  1479         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1480         return name.toString();

  1481     }

  1483     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1484         StringBuilder name = new StringBuilder();

  1485         String descr = mi[2];//mi.getDescriptor();

  1486         String nm= mi[1];

  1487         if ("<init>".equals(nm)) { // NOI18N

  1488             name.append("cons"); // NOI18N

  1489         } else {

  1490             name.append(mangleMethodName(nm));

  1491         }

  1492         countArgs(descr, returnType, name, cnt);

  1493         return name.toString();

  1494     }

  1496     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1497     throws IOException {

  1498         int methodIndex = readUShortArg(byteCodes, i);

  1499         String[] mi = jc.getFieldInfoName(methodIndex);

  1500         char[] returnType = { 'V' };

  1501         StringBuilder cnt = new StringBuilder();

  1502         String mn = findMethodName(mi, cnt, returnType);

  1504         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1505         final Variable[] vars = new Variable[numArguments];

  1507         for (int j = numArguments - 1; j >= 0; --j) {

  1508             vars[j] = mapper.pop();

  1509         }

  1511         if (returnType[0] != 'V') {

  1512             out.append("var ")

  1513                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1514                .append(" = ");

  1515         }

  1517         final String in = mi[0];

  1518         out.append(accessClass(mangleClassName(in)));

  1519         out.append("(false).");

  1520         if (mn.startsWith("cons_")) {

  1521             out.append("constructor.");

  1522         }

  1523         out.append(mn);

  1524         if (isStatic) {

  1525             out.append('(');

  1526         } else {

  1527             out.append(".call(");

  1528         }

  1529         if (numArguments > 0) {

  1530             out.append(vars[0]);

  1531             for (int j = 1; j < numArguments; ++j) {

  1532                 out.append(", ");

  1533                 out.append(vars[j]);

  1534             }

  1535         }

  1536         out.append(");");

  1537         i += 2;

  1538         addReference(in);

  1539         return i;

  1540     }

  1541     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1542     throws IOException {

  1543         int methodIndex = readUShortArg(byteCodes, i);

  1544         String[] mi = jc.getFieldInfoName(methodIndex);

  1545         char[] returnType = { 'V' };

  1546         StringBuilder cnt = new StringBuilder();

  1547         String mn = findMethodName(mi, cnt, returnType);

  1549         final int numArguments = cnt.length() + 1;

  1550         final Variable[] vars = new Variable[numArguments];

  1552         for (int j = numArguments - 1; j >= 0; --j) {

  1553             vars[j] = mapper.pop();

  1554         }

  1556         if (returnType[0] != 'V') {

  1557             out.append("var ")

  1558                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1559                .append(" = ");

  1560         }

  1562         out.append(vars[0]).append('.');

  1563         out.append(mn);

  1564         out.append('(');

  1565         String sep = "";

  1566         for (int j = 1; j < numArguments; ++j) {

  1567             out.append(sep);

  1568             out.append(vars[j]);

  1569             sep = ", ";

  1570         }

  1571         out.append(");");

  1572         i += 2;

  1573         return i;

  1574     }

  1576     private void addReference(String cn) throws IOException {

  1577         if (requireReference(cn)) {

  1578             debug(" /* needs " + cn + " */");

  1579         }

  1580     }

  1582     private void outType(String d, StringBuilder out) {

  1583         int arr = 0;

  1584         while (d.charAt(0) == '[') {

  1585             out.append('A');

  1586             d = d.substring(1);

  1587         }

  1588         if (d.charAt(0) == 'L') {

  1589             assert d.charAt(d.length() - 1) == ';';

  1590             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1591         } else {

  1592             out.append(d);

  1593         }

  1594     }

  1596     private String encodeConstant(int entryIndex) throws IOException {

  1597         String[] classRef = { null };

  1598         String s = jc.stringValue(entryIndex, classRef);

  1599         if (classRef[0] != null) {

  1600             if (classRef[0].startsWith("[")) {

  1601                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1602             } else {

  1603                 addReference(classRef[0]);

  1604                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1605             }

  1606         }

  1607         return s;

  1608     }

  1610     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1611         byte[] arr = m.findAnnotationData(true);

  1612         if (arr == null) {

  1613             return null;

  1614         }

  1615         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1616         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1617         class P extends AnnotationParser {

  1618             public P() {

  1619                 super(false, true);

  1620             }

  1622             int cnt;

  1623             String[] args = new String[30];

  1624             String body;

  1625             boolean javacall;

  1627             @Override

  1628             protected void visitAttr(String type, String attr, String at, String value) {

  1629                 if (type.equals(jvmType)) {

  1630                     if ("body".equals(attr)) {

  1631                         body = value;

  1632                     } else if ("args".equals(attr)) {

  1633                         args[cnt++] = value;

  1634                     } else {

  1635                         throw new IllegalArgumentException(attr);

  1636                     }

  1637                 }

  1638                 if (type.equals(htmlType)) {

  1639                     if ("body".equals(attr)) {

  1640                         body = value;

  1641                     } else if ("args".equals(attr)) {

  1642                         args[cnt++] = value;

  1643                     } else if ("javacall".equals(attr)) {

  1644                         javacall = "1".equals(value);

  1645                     } else {

  1646                         throw new IllegalArgumentException(attr);

  1647                     }

  1648                 }

  1649             }

  1650         }

  1651         P p = new P();

  1652         p.parse(arr, jc);

  1653         if (p.body == null) {

  1654             return null;

  1655         }

  1656         StringBuilder cnt = new StringBuilder();

  1657         final String mn = findMethodName(m, cnt);

  1658         out.append(destObject).append(".").append(mn);

  1659         out.append(" = function(");

  1660         String space = "";

  1661         int index = 0;

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

  1663             out.append(space);

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

  1665             index++;

  1666         }

  1667         out.append(") {").append("\n");

  1668         if (p.javacall) {

  1669             int lastSlash = jc.getClassName().lastIndexOf('/');

  1670             final String pkg = jc.getClassName().substring(0, lastSlash);

  1671             out.append(mangleCallbacks(pkg, p.body));

  1672             requireReference(pkg + "/$JsCallbacks$");

  1673         } else {

  1674             out.append(p.body);

  1675         }

  1676         out.append("\n}\n");

  1677         return mn;

  1678     }

  1680     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1681         StringBuilder sb = new StringBuilder();

  1682         int pos = 0;

  1683         for (;;) {

  1684             int next = body.indexOf(".@", pos);

  1685             if (next == -1) {

  1686                 sb.append(body.substring(pos));

  1687                 body = sb.toString();

  1688                 break;

  1689             }

  1690             int ident = next;

  1691             while (ident > 0) {

  1692                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1693                     ident++;

  1694                     break;

  1695                 }

  1696             }

  1697             String refId = body.substring(ident, next);

  1699             sb.append(body.substring(pos, ident));

  1701             int sigBeg = body.indexOf('(', next);

  1702             int sigEnd = body.indexOf(')', sigBeg);

  1703             int colon4 = body.indexOf("::", next);

  1704             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1705                 throw new IllegalStateException("Malformed body " + body);

  1706             }

  1707             String fqn = body.substring(next + 2, colon4);

  1708             String method = body.substring(colon4 + 2, sigBeg);

  1709             String params = body.substring(sigBeg, sigEnd + 1);

  1711             int paramBeg = body.indexOf('(', sigEnd + 1);

  1713             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1714             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1715             sb.append("(").append(refId);

  1716             if (body.charAt(paramBeg + 1) != ')') {

  1717                 sb.append(",");

  1718             }

  1719             pos = paramBeg + 1;

  1720         }

  1721         sb = null;

  1722         pos = 0;

  1723         for (;;) {

  1724             int next = body.indexOf("@", pos);

  1725             if (next == -1) {

  1726                 if (sb == null) {

  1727                     return body;

  1728                 }

  1729                 sb.append(body.substring(pos));

  1730                 return sb;

  1731             }

  1732             if (sb == null) {

  1733                 sb = new StringBuilder();

  1734             }

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

  1738             int sigBeg = body.indexOf('(', next);

  1739             int sigEnd = body.indexOf(')', sigBeg);

  1740             int colon4 = body.indexOf("::", next);

  1741             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1742                 throw new IllegalStateException("Malformed body " + body);

  1743             }

  1744             String fqn = body.substring(next + 1, colon4);

  1745             String method = body.substring(colon4 + 2, sigBeg);

  1746             String params = body.substring(sigBeg, sigEnd + 1);

  1748             int paramBeg = body.indexOf('(', sigEnd + 1);

  1750             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1751             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1752             sb.append("(");

  1753             pos = paramBeg + 1;

  1754         }

  1755     }

  1757     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1758         if (params.startsWith("(")) {

  1759             params = params.substring(1);

  1760         }

  1761         if (params.endsWith(")")) {

  1762             params = params.substring(0, params.length() - 1);

  1763         }

  1764         StringBuilder sb = new StringBuilder();

  1765         final String fqnu = fqn.replace('.', '_');

  1766         final String rfqn = mangleClassName(fqnu);

  1767         final String rm = mangleMethodName(method);

  1768         final String rp = mangleSig(params);

  1769         final String mrp = mangleMethodName(rp);

  1770         sb.append(rfqn).append("$").append(rm).

  1771             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1772         if (!isStatic) {

  1773             sb.append('L').append(fqnu).append("_2");

  1774         }

  1775         sb.append(rp);

  1776         return sb.toString();

  1777     }

  1779     private static String className(ClassData jc) {

  1780         //return jc.getName().getInternalName().replace('/', '_');

  1781         return mangleClassName(jc.getClassName());

  1782     }

  1784     private static String[] findAnnotation(

  1785         byte[] arr, ClassData cd, final String className,

  1786         final String... attrNames

  1787     ) throws IOException {

  1788         if (arr == null) {

  1789             return null;

  1790         }

  1791         final String[] values = new String[attrNames.length];

  1792         final boolean[] found = { false };

  1793         final String jvmType = "L" + className.replace('.', '/') + ";";

  1794         AnnotationParser ap = new AnnotationParser(false, true) {

  1795             @Override

  1796             protected void visitAttr(String type, String attr, String at, String value) {

  1797                 if (type.equals(jvmType)) {

  1798                     found[0] = true;

  1799                     for (int i = 0; i < attrNames.length; i++) {

  1800                         if (attrNames[i].equals(attr)) {

  1801                             values[i] = value;

  1802                         }

  1803                     }

  1804                 }

  1805             }

  1807         };

  1808         ap.parse(arr, cd);

  1809         return found[0] ? values : null;

  1810     }

  1812     private CharSequence initField(FieldData v) {

  1813         final String is = v.getInternalSig();

  1814         if (is.length() == 1) {

  1815             switch (is.charAt(0)) {

  1816                 case 'S':

  1817                 case 'J':

  1818                 case 'B':

  1819                 case 'Z':

  1820                 case 'C':

  1821                 case 'I': return " = 0;";

  1822                 case 'F':

  1823                 case 'D': return " = 0.0;";

  1824                 default:

  1825                     throw new IllegalStateException(is);

  1826             }

  1827         }

  1828         return " = null;";

  1829     }

  1831     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1832         AnnotationParser ap = new AnnotationParser(true, false) {

  1833             int[] cnt = new int[32];

  1834             int depth;

  1836             @Override

  1837             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1838                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1839                 requireReference(slashType);

  1841                 if (cnt[depth]++ > 0) {

  1842                     out.append(",");

  1843                 }

  1844                 if (top) {

  1845                     out.append('"').append(attrType).append("\" : ");

  1846                 }

  1847                 out.append("{\n");

  1848                 cnt[++depth] = 0;

  1849             }

  1851             @Override

  1852             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1853                 out.append("\n}\n");

  1854                 depth--;

  1855             }

  1857             @Override

  1858             protected void visitValueStart(String attrName, char type) throws IOException {

  1859                 if (cnt[depth]++ > 0) {

  1860                     out.append(",\n");

  1861                 }

  1862                 cnt[++depth] = 0;

  1863                 if (attrName != null) {

  1864                     out.append(attrName).append(" : ");

  1865                 }

  1866                 if (type == '[') {

  1867                     out.append("[");

  1868                 }

  1869             }

  1871             @Override

  1872             protected void visitValueEnd(String attrName, char type) throws IOException {

  1873                 if (type == '[') {

  1874                     out.append("]");

  1875                 }

  1876                 depth--;

  1877             }

  1879             @Override

  1880             protected void visitAttr(String type, String attr, String attrType, String value)

  1881             throws IOException {

  1882                 if (attr == null && value == null) {

  1883                     return;

  1884                 }

  1885                 out.append(value);

  1886             }

  1888             @Override

  1889             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1890             throws IOException {

  1891                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1892                 requireReference(slashType);

  1894                 out.append(accessClass(mangleClassName(slashType)))

  1895                    .append("(false).constructor.fld_").append(value);

  1896             }

  1897         };

  1898         ap.parse(data, cd);

  1899     }

  1901     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1902         final String name = args[indx];

  1903         if (name == null) {

  1904             return "";

  1905         }

  1906         if (name.contains(",")) {

  1907             throw new IOException("Wrong parameter with ',': " + name);

  1908         }

  1909         out.append(name);

  1910         return ",";

  1911     }

  1913     private static void emit(final Appendable out,

  1914                              final String format,

  1915                              final CharSequence... params) throws IOException {

  1916         final int length = format.length();

  1918         int processed = 0;

  1919         int paramOffset = format.indexOf('@');

  1920         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1921             final char paramChar = format.charAt(paramOffset + 1);

  1922             if ((paramChar >= '1') && (paramChar <= '9')) {

  1923                 final int paramIndex = paramChar - '0' - 1;

  1925                 out.append(format, processed, paramOffset);

  1926                 out.append(params[paramIndex]);

  1928                 ++paramOffset;

  1929                 processed = paramOffset + 1;

  1930             }

  1932             paramOffset = format.indexOf('@', paramOffset + 1);

  1933         }

  1935         out.append(format, processed, length);

  1936     }

  1938     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1939         out.append("} catch (e) {\n");

  1940         int finallyPC = -1;

  1941         for (TrapData e : traps) {

  1942             if (e == null) {

  1943                 break;

  1944             }

  1945             if (e.catch_cpx != 0) { //not finally

  1946                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1947                 addReference(classInternalName);

  1948                 out.append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  1949                 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1950                 out.append("var stA0 = e;");

  1951                 goTo(out, current, e.handler_pc, topMostLabel);

  1952                 out.append("}\n");

  1953             } else {

  1954                 finallyPC = e.handler_pc;

  1955             }

  1956         }

  1957         if (finallyPC == -1) {

  1958             out.append("throw e;");

  1959         } else {

  1960             out.append("var stA0 = e;");

  1961             goTo(out, current, finallyPC, topMostLabel);

  1962         }

  1963         out.append("\n}");

  1964     }

  1966     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1967         if (to < current) {

  1968             if (canBack < to) {

  1969                 out.append("{ gt = 0; continue X_" + to + "; }");

  1970             } else {

  1971                 out.append("{ gt = " + to + "; continue X_0; }");

  1972             }

  1973         } else {

  1974             out.append("{ gt = " + to + "; break IF; }");

  1975         }

  1976     }

  1978     private static void emitIf(

  1979         Appendable out, String pattern, Variable param,

  1980         int current, int to, int canBack

  1981     ) throws IOException {

  1982         emit(out, pattern, param);

  1983         goTo(out, current, to, canBack);

  1984     }

  1986     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1987         String jvmType;

  1988         switch (atype) {

  1989             case 4: jvmType = "[Z"; break;

  1990             case 5: jvmType = "[C"; break;

  1991             case 6: jvmType = "[F"; break;

  1992             case 7: jvmType = "[D"; break;

  1993             case 8: jvmType = "[B"; break;

  1994             case 9: jvmType = "[S"; break;

  1995             case 10: jvmType = "[I"; break;

  1996             case 11: jvmType = "[J"; break;

  1997             default: throw new IllegalStateException("Array type: " + atype);

  1998         }

  1999         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  2000              smapper.popI(), smapper.pushA(), jvmType);

  2001     }

  2003     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2004         String typeName = jc.getClassName(type);

  2005         if (typeName.startsWith("[")) {

  2006             typeName = "[" + typeName;

  2007         } else {

  2008             typeName = "[L" + typeName + ";";

  2009         }

  2010         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  2011              smapper.popI(), smapper.pushA(), typeName);

  2012     }

  2014     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2015         String typeName = jc.getClassName(type);

  2016         int dim = readUByte(byteCodes, ++i);

  2017         StringBuilder dims = new StringBuilder();

  2018         dims.append('[');

  2019         for (int d = 0; d < dim; d++) {

  2020             if (d != 0) {

  2021                 dims.insert(1, ",");

  2022             }

  2023             dims.insert(1, smapper.popI());

  2024         }

  2025         dims.append(']');

  2026         emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  2027              dims.toString(), smapper.pushA(), typeName);

  2028         return i;

  2029     }

  2031     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2032         int table = i / 4 * 4 + 4;

  2033         int dflt = i + readInt4(byteCodes, table);

  2034         table += 4;

  2035         int low = readInt4(byteCodes, table);

  2036         table += 4;

  2037         int high = readInt4(byteCodes, table);

  2038         table += 4;

  2039         out.append("switch (").append(smapper.popI()).append(") {\n");

  2040         while (low <= high) {

  2041             int offset = i + readInt4(byteCodes, table);

  2042             table += 4;

  2043             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  2044             low++;

  2045         }

  2046         out.append("  default: ");

  2047         goTo(out, i, dflt, topMostLabel);

  2048         out.append("\n}");

  2049         i = table - 1;

  2050         return i;

  2051     }

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

  2054         int table = i / 4 * 4 + 4;

  2055         int dflt = i + readInt4(byteCodes, table);

  2056         table += 4;

  2057         int n = readInt4(byteCodes, table);

  2058         table += 4;

  2059         out.append("switch (").append(smapper.popI()).append(") {\n");

  2060         while (n-- > 0) {

  2061             int cnstnt = readInt4(byteCodes, table);

  2062             table += 4;

  2063             int offset = i + readInt4(byteCodes, table);

  2064             table += 4;

  2065             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  2066         }

  2067         out.append("  default: ");

  2068         goTo(out, i, dflt, topMostLabel);

  2069         out.append("\n}");

  2070         i = table - 1;

  2071         return i;

  2072     }

  2074     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2075         final String type = jc.getClassName(indx);

  2076         if (!type.startsWith("[")) {

  2077             emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  2078                  smapper.popA(), smapper.pushI(),

  2079                  type.replace('/', '_'));

  2080         } else {

  2081             emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  2082                 smapper.popA(), smapper.pushI(),

  2083                 type

  2084             );

  2085         }

  2086     }

  2088     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2089         final String type = jc.getClassName(indx);

  2090         if (!type.startsWith("[")) {

  2091             emit(out,

  2092                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  2093                  smapper.getA(0), type.replace('/', '_'));

  2094         } else {

  2095             emit(out, "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@2').cast__Ljava_lang_Object_2Ljava_lang_Object_2(@1);",

  2096                  smapper.getA(0), type

  2097             );

  2098         }

  2099     }

  2101     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2102         for (int j = prev; j <= i; j++) {

  2103             out.append(" ");

  2104             final int cc = readUByte(byteCodes, j);

  2105             out.append(Integer.toString(cc));

  2106         }

  2107     }

  2108 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Thu, 07 Nov 2013 09:41:45 +0100
changeset 1409	3d1612be40bc
parent 1392	da9e5973e699
child 1421	b8e33a00bfab
permissions	-rw-r--r--