hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@c3e68a67d46d

     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(sc.replace('/', '_'))).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.").append(v.getName()).append(initField(v));

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

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

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

   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         String instOfName = "$instOf_" + className;

   212         out.append("\n    c.").append(instOfName).append(" = true;");

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

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

   215             instOfName = "$instOf_" + superInterface.replace('/', '_');

   216             out.append("\n    c.").append(instOfName).append(" = true;");

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

   218         }

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

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

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

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

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

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

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

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

   227         if (classAnno != null) {

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

   229             generateAnno(jc, out, classAnno);

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

   231         }

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

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

   234         }

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

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

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

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

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

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

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

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

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

   244                 "name", "value"

   245             );

   246             if (only != null) {

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

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

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

   250                 }

   251                 continue;

   252             }

   253             if (!v.isStatic()) {

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

   255                     append(className).append('_').

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

   257             }

   258         }

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

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

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

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

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

   266 //        StringBuilder sb = new StringBuilder();

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

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

   269 //        }

   270         return "";

   271     }

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

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

   274         if (jsb != null) {

   275             return jsb;

   276         }

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

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

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

   280         }

   281         generateMethod(destObject, mn, m);

   282         return mn;

   283     }

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

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

   287         if (jsb != null) {

   288             return jsb;

   289         }

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

   291         generateMethod(destObject, mn, m);

   292         return mn;

   293     }

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

   296             throws IOException {

   297         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   298         TrapDataIterator trap = m.getTrapDataIterator();

   299         final LocalsMapper lmapper =

   300                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   307         if (byteCodes == null) {

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

   309                .append(jc.getClassName()).append('.')

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

   311             out.append("};");

   312             return;

   313         }

   315         final StackMapper smapper = new StackMapper();

   317         if (!m.isStatic()) {

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

   319         }

   321         int lastStackFrame = -1;

   322         TrapData[] previousTrap = null;

   323         boolean wide = false;

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

   326         int openBraces = 0;

   327         int topMostLabel = 0;

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

   329             int prev = i;

   330             stackMapIterator.advanceTo(i);

   331             boolean changeInCatch = trap.advanceTo(i);

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

   333                 if (previousTrap != null) {

   334                     generateCatch(previousTrap, i, topMostLabel);

   335                     previousTrap = null;

   336                 }

   337             }

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

   339                 if (i != 0) {

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

   341                 }

   342                 if (openBraces > 64) {

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

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

   345                     }

   346                     openBraces = 1;

   347                     topMostLabel = i;

   348                 }

   350                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   354                 openBraces++;

   355                 changeInCatch = true;

   356             } else {

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

   358             }

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

   360                 out.append("try {");

   361                 previousTrap = trap.current();

   362             }

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

   364             switch (c) {

   365                 case opc_aload_0:

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

   367                     break;

   368                 case opc_iload_0:

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

   370                     break;

   371                 case opc_lload_0:

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

   373                     break;

   374                 case opc_fload_0:

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

   376                     break;

   377                 case opc_dload_0:

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

   379                     break;

   380                 case opc_aload_1:

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

   382                     break;

   383                 case opc_iload_1:

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

   385                     break;

   386                 case opc_lload_1:

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

   388                     break;

   389                 case opc_fload_1:

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

   391                     break;

   392                 case opc_dload_1:

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

   394                     break;

   395                 case opc_aload_2:

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

   397                     break;

   398                 case opc_iload_2:

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

   400                     break;

   401                 case opc_lload_2:

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

   403                     break;

   404                 case opc_fload_2:

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

   406                     break;

   407                 case opc_dload_2:

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

   409                     break;

   410                 case opc_aload_3:

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

   412                     break;

   413                 case opc_iload_3:

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

   415                     break;

   416                 case opc_lload_3:

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

   418                     break;

   419                 case opc_fload_3:

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

   421                     break;

   422                 case opc_dload_3:

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

   424                     break;

   425                 case opc_iload: {

   426                     ++i;

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

   428                                           : readUByte(byteCodes, i);

   429                     wide = false;

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

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

   432                     break;

   433                 }

   434                 case opc_lload: {

   435                     ++i;

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

   437                                           : readUByte(byteCodes, i);

   438                     wide = false;

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

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

   441                     break;

   442                 }

   443                 case opc_fload: {

   444                     ++i;

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

   446                                           : readUByte(byteCodes, i);

   447                     wide = false;

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

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

   450                     break;

   451                 }

   452                 case opc_dload: {

   453                     ++i;

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

   455                                           : readUByte(byteCodes, i);

   456                     wide = false;

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

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

   459                     break;

   460                 }

   461                 case opc_aload: {

   462                     ++i;

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

   464                                           : readUByte(byteCodes, i);

   465                     wide = false;

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

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

   468                     break;

   469                 }

   470                 case opc_istore: {

   471                     ++i;

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

   473                                           : readUByte(byteCodes, i);

   474                     wide = false;

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

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

   477                     break;

   478                 }

   479                 case opc_lstore: {

   480                     ++i;

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

   482                                           : readUByte(byteCodes, i);

   483                     wide = false;

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

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

   486                     break;

   487                 }

   488                 case opc_fstore: {

   489                     ++i;

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

   491                                           : readUByte(byteCodes, i);

   492                     wide = false;

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

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

   495                     break;

   496                 }

   497                 case opc_dstore: {

   498                     ++i;

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

   500                                           : readUByte(byteCodes, i);

   501                     wide = false;

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

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

   504                     break;

   505                 }

   506                 case opc_astore: {

   507                     ++i;

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

   509                                           : readUByte(byteCodes, i);

   510                     wide = false;

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

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

   513                     break;

   514                 }

   515                 case opc_astore_0:

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

   517                     break;

   518                 case opc_istore_0:

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

   520                     break;

   521                 case opc_lstore_0:

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

   523                     break;

   524                 case opc_fstore_0:

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

   526                     break;

   527                 case opc_dstore_0:

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

   529                     break;

   530                 case opc_astore_1:

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

   532                     break;

   533                 case opc_istore_1:

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

   535                     break;

   536                 case opc_lstore_1:

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

   538                     break;

   539                 case opc_fstore_1:

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

   541                     break;

   542                 case opc_dstore_1:

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

   544                     break;

   545                 case opc_astore_2:

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

   547                     break;

   548                 case opc_istore_2:

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

   550                     break;

   551                 case opc_lstore_2:

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

   553                     break;

   554                 case opc_fstore_2:

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

   556                     break;

   557                 case opc_dstore_2:

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

   559                     break;

   560                 case opc_astore_3:

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

   562                     break;

   563                 case opc_istore_3:

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

   565                     break;

   566                 case opc_lstore_3:

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

   568                     break;

   569                 case opc_fstore_3:

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

   571                     break;

   572                 case opc_dstore_3:

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

   574                     break;

   575                 case opc_iadd:

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

   577                     break;

   578                 case opc_ladd:

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

   580                     break;

   581                 case opc_fadd:

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

   583                     break;

   584                 case opc_dadd:

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

   586                     break;

   587                 case opc_isub:

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

   589                     break;

   590                 case opc_lsub:

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

   592                     break;

   593                 case opc_fsub:

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

   595                     break;

   596                 case opc_dsub:

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

   598                     break;

   599                 case opc_imul:

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

   601                     break;

   602                 case opc_lmul:

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

   604                     break;

   605                 case opc_fmul:

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

   607                     break;

   608                 case opc_dmul:

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

   610                     break;

   611                 case opc_idiv:

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

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

   614                     break;

   615                 case opc_ldiv:

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

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

   618                     break;

   619                 case opc_fdiv:

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

   621                     break;

   622                 case opc_ddiv:

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

   624                     break;

   625                 case opc_irem:

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

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

   628                     break;

   629                 case opc_lrem:

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

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

   632                     break;

   633                 case opc_frem:

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

   635                     break;

   636                 case opc_drem:

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

   638                     break;

   639                 case opc_iand:

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

   641                     break;

   642                 case opc_land:

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

   644                     break;

   645                 case opc_ior:

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

   647                     break;

   648                 case opc_lor:

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

   650                     break;

   651                 case opc_ixor:

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

   653                     break;

   654                 case opc_lxor:

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

   656                     break;

   657                 case opc_ineg:

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

   659                     break;

   660                 case opc_lneg:

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

   662                     break;

   663                 case opc_fneg:

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

   665                     break;

   666                 case opc_dneg:

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

   668                     break;

   669                 case opc_ishl:

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

   671                     break;

   672                 case opc_lshl:

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

   674                     break;

   675                 case opc_ishr:

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

   677                     break;

   678                 case opc_lshr:

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

   680                     break;

   681                 case opc_iushr:

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

   683                     break;

   684                 case opc_lushr:

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

   686                     break;

   687                 case opc_iinc: {

   688                     ++i;

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

   690                                              : readUByte(byteCodes, i);

   691                     ++i;

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

   693                                             : byteCodes[i];

   694                     wide = false;

   695                     if (incrBy == 1) {

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

   697                     } else {

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

   699                              lmapper.getI(varIndx),

   700                              Integer.toString(incrBy));

   701                     }

   702                     break;

   703                 }

   704                 case opc_return:

   705                     emit(out, "return;");

   706                     break;

   707                 case opc_ireturn:

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

   709                     break;

   710                 case opc_lreturn:

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

   712                     break;

   713                 case opc_freturn:

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

   715                     break;

   716                 case opc_dreturn:

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

   718                     break;

   719                 case opc_areturn:

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

   721                     break;

   722                 case opc_i2l:

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

   724                     break;

   725                 case opc_i2f:

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

   727                     break;

   728                 case opc_i2d:

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

   730                     break;

   731                 case opc_l2i:

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

   733                     break;

   734                     // max int check?

   735                 case opc_l2f:

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

   737                     break;

   738                 case opc_l2d:

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

   740                     break;

   741                 case opc_f2d:

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

   743                     break;

   744                 case opc_d2f:

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

   746                     break;

   747                 case opc_f2i:

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

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

   750                     break;

   751                 case opc_f2l:

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

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

   754                     break;

   755                 case opc_d2i:

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

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

   758                     break;

   759                 case opc_d2l:

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

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

   762                     break;

   763                 case opc_i2b:

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

   765                     break;

   766                 case opc_i2c:

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

   768                     break;

   769                 case opc_i2s:

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

   771                     break;

   772                 case opc_aconst_null:

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

   774                     break;

   775                 case opc_iconst_m1:

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

   777                     break;

   778                 case opc_iconst_0:

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

   780                     break;

   781                 case opc_dconst_0:

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

   783                     break;

   784                 case opc_lconst_0:

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

   786                     break;

   787                 case opc_fconst_0:

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

   789                     break;

   790                 case opc_iconst_1:

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

   792                     break;

   793                 case opc_lconst_1:

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

   795                     break;

   796                 case opc_fconst_1:

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

   798                     break;

   799                 case opc_dconst_1:

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

   801                     break;

   802                 case opc_iconst_2:

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

   804                     break;

   805                 case opc_fconst_2:

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

   807                     break;

   808                 case opc_iconst_3:

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

   810                     break;

   811                 case opc_iconst_4:

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

   813                     break;

   814                 case opc_iconst_5:

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

   816                     break;

   817                 case opc_ldc: {

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

   819                     String v = encodeConstant(indx);

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

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

   822                     break;

   823                 }

   824                 case opc_ldc_w:

   825                 case opc_ldc2_w: {

   826                     int indx = readUShortArg(byteCodes, i);

   827                     i += 2;

   828                     String v = encodeConstant(indx);

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

   830                     if (type == VarType.LONG) {

   831                         final Long lv = new Long(v);

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

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

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

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

   836                     } else {

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

   838                     }

   839                     break;

   840                 }

   841                 case opc_lcmp:

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

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

   844                     break;

   845                 case opc_fcmpl:

   846                 case opc_fcmpg:

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

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

   849                     break;

   850                 case opc_dcmpl:

   851                 case opc_dcmpg:

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

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

   854                     break;

   855                 case opc_if_acmpeq:

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

   857                                    "===", topMostLabel);

   858                     break;

   859                 case opc_if_acmpne:

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

   861                                    "!==", topMostLabel);

   862                     break;

   863                 case opc_if_icmpeq:

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

   865                                    "==", topMostLabel);

   866                     break;

   867                 case opc_ifeq: {

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

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

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

   871                     i += 2;

   872                     break;

   873                 }

   874                 case opc_ifne: {

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

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

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

   878                     i += 2;

   879                     break;

   880                 }

   881                 case opc_iflt: {

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

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

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

   885                     i += 2;

   886                     break;

   887                 }

   888                 case opc_ifle: {

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

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

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

   892                     i += 2;

   893                     break;

   894                 }

   895                 case opc_ifgt: {

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

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

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

   899                     i += 2;

   900                     break;

   901                 }

   902                 case opc_ifge: {

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

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

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

   906                     i += 2;

   907                     break;

   908                 }

   909                 case opc_ifnonnull: {

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

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

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

   913                     i += 2;

   914                     break;

   915                 }

   916                 case opc_ifnull: {

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

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

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

   920                     i += 2;

   921                     break;

   922                 }

   923                 case opc_if_icmpne:

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

   925                                    "!=", topMostLabel);

   926                     break;

   927                 case opc_if_icmplt:

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

   929                                    "<", topMostLabel);

   930                     break;

   931                 case opc_if_icmple:

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

   933                                    "<=", topMostLabel);

   934                     break;

   935                 case opc_if_icmpgt:

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

   937                                    ">", topMostLabel);

   938                     break;

   939                 case opc_if_icmpge:

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

   941                                    ">=", topMostLabel);

   942                     break;

   943                 case opc_goto: {

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

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

   946                     i += 2;

   947                     break;

   948                 }

   949                 case opc_lookupswitch: {

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

   951                     break;

   952                 }

   953                 case opc_tableswitch: {

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

   955                     break;

   956                 }

   957                 case opc_invokeinterface: {

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

   959                     break;

   960                 }

   961                 case opc_invokevirtual:

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

   963                     break;

   964                 case opc_invokespecial:

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

   966                     break;

   967                 case opc_invokestatic:

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

   969                     break;

   970                 case opc_new: {

   971                     int indx = readUShortArg(byteCodes, i);

   972                     String ci = jc.getClassName(indx);

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

   974                          smapper.pushA(), accessClass(ci.replace('/', '_')));

   975                     addReference(ci);

   976                     i += 2;

   977                     break;

   978                 }

   979                 case opc_newarray:

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

   981                     generateNewArray(atype, smapper);

   982                     break;

   983                 case opc_anewarray: {

   984                     int type = readUShortArg(byteCodes, i);

   985                     i += 2;

   986                     generateANewArray(type, smapper);

   987                     break;

   988                 }

   989                 case opc_multianewarray: {

   990                     int type = readUShortArg(byteCodes, i);

   991                     i += 2;

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

   993                     break;

   994                 }

   995                 case opc_arraylength:

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

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

   998                     break;

   999                 case opc_lastore:

  1000                     emit(out, "@3.at(@2, @1);",

  1001                          smapper.popL(), smapper.popI(), smapper.popA());

  1002                     break;

  1003                 case opc_fastore:

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

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

  1006                     break;

  1007                 case opc_dastore:

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

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

  1010                     break;

  1011                 case opc_aastore:

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

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

  1014                     break;

  1015                 case opc_iastore:

  1016                 case opc_bastore:

  1017                 case opc_castore:

  1018                 case opc_sastore:

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

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

  1021                     break;

  1022                 case opc_laload:

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

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

  1025                     break;

  1026                 case opc_faload:

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

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

  1029                     break;

  1030                 case opc_daload:

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

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

  1033                     break;

  1034                 case opc_aaload:

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

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

  1037                     break;

  1038                 case opc_iaload:

  1039                 case opc_baload:

  1040                 case opc_caload:

  1041                 case opc_saload:

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

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

  1044                     break;

  1045                 case opc_pop:

  1046                 case opc_pop2:

  1047                     smapper.pop(1);

  1048                     debug("/* pop */");

  1049                     break;

  1050                 case opc_dup: {

  1051                     final Variable v = smapper.get(0);

  1052                     emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1053                     break;

  1054                 }

  1055                 case opc_dup2: {

  1056                     final Variable vi1 = smapper.get(0);

  1058                     if (vi1.isCategory2()) {

  1059                         emit(out, "var @1 = @2;",

  1060                              smapper.pushT(vi1.getType()), vi1);

  1061                     } else {

  1062                         final Variable vi2 = smapper.get(1);

  1063                         emit(out, "var @1 = @2, @3 = @4;",

  1064                              smapper.pushT(vi2.getType()), vi2,

  1065                              smapper.pushT(vi1.getType()), vi1);

  1066                     }

  1067                     break;

  1068                 }

  1069                 case opc_dup_x1: {

  1070                     final Variable vi1 = smapper.pop();

  1071                     final Variable vi2 = smapper.pop();

  1072                     final Variable vo3 = smapper.pushT(vi1.getType());

  1073                     final Variable vo2 = smapper.pushT(vi2.getType());

  1074                     final Variable vo1 = smapper.pushT(vi1.getType());

  1076                     emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1077                          vo1, vi1, vo2, vi2, vo3, vo1);

  1078                     break;

  1079                 }

  1080                 case opc_dup2_x1: {

  1081                     final Variable vi1 = smapper.pop();

  1082                     final Variable vi2 = smapper.pop();

  1084                     if (vi1.isCategory2()) {

  1085                         final Variable vo3 = smapper.pushT(vi1.getType());

  1086                         final Variable vo2 = smapper.pushT(vi2.getType());

  1087                         final Variable vo1 = smapper.pushT(vi1.getType());

  1089                         emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1090                              vo1, vi1, vo2, vi2, vo3, vo1);

  1091                     } else {

  1092                         final Variable vi3 = smapper.pop();

  1093                         final Variable vo5 = smapper.pushT(vi2.getType());

  1094                         final Variable vo4 = smapper.pushT(vi1.getType());

  1095                         final Variable vo3 = smapper.pushT(vi3.getType());

  1096                         final Variable vo2 = smapper.pushT(vi2.getType());

  1097                         final Variable vo1 = smapper.pushT(vi1.getType());

  1099                         emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1100                              vo1, vi1, vo2, vi2, vo3, vi3);

  1101                         emit(out, " @1 = @2, @3 = @4;",

  1102                              vo4, vo1, vo5, vo2);

  1103                     }

  1104                     break;

  1105                 }

  1106                 case opc_dup_x2: {

  1107                     final Variable vi1 = smapper.pop();

  1108                     final Variable vi2 = smapper.pop();

  1110                     if (vi2.isCategory2()) {

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

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

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

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

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

  1117                     } else {

  1118                         final Variable vi3 = smapper.pop();

  1119                         final Variable vo4 = smapper.pushT(vi1.getType());

  1120                         final Variable vo3 = smapper.pushT(vi3.getType());

  1121                         final Variable vo2 = smapper.pushT(vi2.getType());

  1122                         final Variable vo1 = smapper.pushT(vi1.getType());

  1124                         emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1125                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1126                     }

  1127                     break;

  1128                 }

  1129                 case opc_dup2_x2: {

  1130                     final Variable vi1 = smapper.pop();

  1131                     final Variable vi2 = smapper.pop();

  1133                     if (vi1.isCategory2()) {

  1134                         if (vi2.isCategory2()) {

  1135                             final Variable vo3 = smapper.pushT(vi1.getType());

  1136                             final Variable vo2 = smapper.pushT(vi2.getType());

  1137                             final Variable vo1 = smapper.pushT(vi1.getType());

  1139                             emit(out, "var @1 = @2, @3 = @4, @5 = @6;",

  1140                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1141                         } else {

  1142                             final Variable vi3 = smapper.pop();

  1143                             final Variable vo4 = smapper.pushT(vi1.getType());

  1144                             final Variable vo3 = smapper.pushT(vi3.getType());

  1145                             final Variable vo2 = smapper.pushT(vi2.getType());

  1146                             final Variable vo1 = smapper.pushT(vi1.getType());

  1148                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1149                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1150                         }

  1151                     } else {

  1152                         final Variable vi3 = smapper.pop();

  1154                         if (vi3.isCategory2()) {

  1155                             final Variable vo5 = smapper.pushT(vi2.getType());

  1156                             final Variable vo4 = smapper.pushT(vi1.getType());

  1157                             final Variable vo3 = smapper.pushT(vi3.getType());

  1158                             final Variable vo2 = smapper.pushT(vi2.getType());

  1159                             final Variable vo1 = smapper.pushT(vi1.getType());

  1161                             emit(out, "var @1 = @2, @3 = @4, @5 = @6,",

  1162                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1163                             emit(out, " @1 = @2, @3 = @4;",

  1164                                  vo4, vo1, vo5, vo2);

  1165                         } else {

  1166                             final Variable vi4 = smapper.pop();

  1167                             final Variable vo6 = smapper.pushT(vi2.getType());

  1168                             final Variable vo5 = smapper.pushT(vi1.getType());

  1169                             final Variable vo4 = smapper.pushT(vi4.getType());

  1170                             final Variable vo3 = smapper.pushT(vi3.getType());

  1171                             final Variable vo2 = smapper.pushT(vi2.getType());

  1172                             final Variable vo1 = smapper.pushT(vi1.getType());

  1174                             emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1175                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1176                             emit(out, " @1 = @2, @3 = @4;",

  1177                                  vo5, vo1, vo6, vo2);

  1178                         }

  1179                     }

  1180                     break;

  1181                 }

  1182                 case opc_swap: {

  1183                     final Variable vi1 = smapper.get(0);

  1184                     final Variable vi2 = smapper.get(1);

  1186                     if (vi1.getType() == vi2.getType()) {

  1187                         final Variable tmp = smapper.pushT(vi1.getType());

  1189                         emit(out, "var @1 = @2, @2 = @3, @3 = @1;",

  1190                              tmp, vi1, vi2);

  1191                         smapper.pop(1);

  1192                     } else {

  1193                         smapper.pop(2);

  1194                         smapper.pushT(vi1.getType());

  1195                         smapper.pushT(vi2.getType());

  1196                     }

  1197                     break;

  1198                 }

  1199                 case opc_bipush:

  1200                     emit(out, "var @1 = @2;",

  1201                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1202                     break;

  1203                 case opc_sipush:

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

  1205                          smapper.pushI(),

  1206                          Integer.toString(readShortArg(byteCodes, i)));

  1207                     i += 2;

  1208                     break;

  1209                 case opc_getfield: {

  1210                     int indx = readUShortArg(byteCodes, i);

  1211                     String[] fi = jc.getFieldInfoName(indx);

  1212                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1213                     final String mangleClass = mangleSig(fi[0]);

  1214                     final String mangleClassAccess = accessClass(mangleClass);

  1215                     emit(out, "var @2 = @4(false)._@3.call(@1);",

  1216                          smapper.popA(),

  1217                          smapper.pushT(type), fi[1], mangleClassAccess

  1218                     );

  1219                     i += 2;

  1220                     break;

  1221                 }

  1222                 case opc_putfield: {

  1223                     int indx = readUShortArg(byteCodes, i);

  1224                     String[] fi = jc.getFieldInfoName(indx);

  1225                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1226                     final String mangleClass = mangleSig(fi[0]);

  1227                     final String mangleClassAccess = accessClass(mangleClass);

  1228                     emit(out, "@4(false)._@3.call(@2, @1);",

  1229                          smapper.popT(type),

  1230                          smapper.popA(), fi[1],

  1231                          mangleClassAccess

  1232                     );

  1233                     i += 2;

  1234                     break;

  1235                 }

  1236                 case opc_getstatic: {

  1237                     int indx = readUShortArg(byteCodes, i);

  1238                     String[] fi = jc.getFieldInfoName(indx);

  1239                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1240                     emit(out, "var @1 = @2(false)._@3();",

  1241                          smapper.pushT(type),

  1242                          accessClass(fi[0].replace('/', '_')), fi[1]);

  1243                     i += 2;

  1244                     addReference(fi[0]);

  1245                     break;

  1246                 }

  1247                 case opc_putstatic: {

  1248                     int indx = readUShortArg(byteCodes, i);

  1249                     String[] fi = jc.getFieldInfoName(indx);

  1250                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1251                     emit(out, "@1(false)._@2(@3);",

  1252                          accessClass(fi[0].replace('/', '_')), fi[1],

  1253                          smapper.popT(type));

  1254                     i += 2;

  1255                     addReference(fi[0]);

  1256                     break;

  1257                 }

  1258                 case opc_checkcast: {

  1259                     int indx = readUShortArg(byteCodes, i);

  1260                     generateCheckcast(indx, smapper);

  1261                     i += 2;

  1262                     break;

  1263                 }

  1264                 case opc_instanceof: {

  1265                     int indx = readUShortArg(byteCodes, i);

  1266                     generateInstanceOf(indx, smapper);

  1267                     i += 2;

  1268                     break;

  1269                 }

  1270                 case opc_athrow: {

  1271                     final Variable v = smapper.popA();

  1272                     smapper.clear();

  1274                     emit(out, "{ var @1 = @2; throw @2; }",

  1275                          smapper.pushA(), v);

  1276                     break;

  1277                 }

  1279                 case opc_monitorenter: {

  1280                     out.append("/* monitor enter */");

  1281                     smapper.popA();

  1282                     break;

  1283                 }

  1285                 case opc_monitorexit: {

  1286                     out.append("/* monitor exit */");

  1287                     smapper.popA();

  1288                     break;

  1289                 }

  1291                 case opc_wide:

  1292                     wide = true;

  1293                     break;

  1295                 default: {

  1296                     wide = false;

  1297                     emit(out, "throw 'unknown bytecode @1';",

  1298                          Integer.toString(c));

  1299                 }

  1300             }

  1301             if (debug(" //")) {

  1302                 generateByteCodeComment(prev, i, byteCodes);

  1303             }

  1304             out.append("\n");

  1305         }

  1306         if (previousTrap != null) {

  1307             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1308         }

  1309         out.append("\n    }\n");

  1310         while (openBraces-- > 0) {

  1311             out.append('}');

  1312         }

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

  1314     }

  1316     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1317         int indx = i + readShortArg(byteCodes, i);

  1318         out.append("if (").append(v1)

  1319            .append(' ').append(test).append(' ')

  1320            .append(v2).append(") ");

  1321         goTo(out, i, indx, topMostLabel);

  1322         return i + 2;

  1323     }

  1325     private int readInt4(byte[] byteCodes, int offset) {

  1326         final int d = byteCodes[offset + 0] << 24;

  1327         final int c = byteCodes[offset + 1] << 16;

  1328         final int b = byteCodes[offset + 2] << 8;

  1329         final int a = byteCodes[offset + 3];

  1330         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1331     }

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

  1333         return byteCodes[offset] & 0xff;

  1334     }

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

  1337         return ((byteCodes[offset] & 0xff) << 8)

  1338                     | (byteCodes[offset + 1] & 0xff);

  1339     }

  1340     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1341         return readUShort(byteCodes, offsetInstruction + 1);

  1342     }

  1344     private static int readShort(byte[] byteCodes, int offset) {

  1345         int signed = byteCodes[offset];

  1346         byte b0 = (byte)signed;

  1347         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1348     }

  1349     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1350         return readShort(byteCodes, offsetInstruction + 1);

  1351     }

  1353     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1354         int i = 0;

  1355         Boolean count = null;

  1356         boolean array = false;

  1357         sig.append("__");

  1358         int firstPos = sig.length();

  1359         while (i < descriptor.length()) {

  1360             char ch = descriptor.charAt(i++);

  1361             switch (ch) {

  1362                 case '(':

  1363                     count = true;

  1364                     continue;

  1365                 case ')':

  1366                     count = false;

  1367                     continue;

  1368                 case 'B':

  1369                 case 'C':

  1370                 case 'D':

  1371                 case 'F':

  1372                 case 'I':

  1373                 case 'J':

  1374                 case 'S':

  1375                 case 'Z':

  1376                     if (count) {

  1377                         if (array) {

  1378                             sig.append("_3");

  1379                         }

  1380                         sig.append(ch);

  1381                         if (ch == 'J' || ch == 'D') {

  1382                             cnt.append('1');

  1383                         } else {

  1384                             cnt.append('0');

  1385                         }

  1386                     } else {

  1387                         sig.insert(firstPos, ch);

  1388                         if (array) {

  1389                             returnType[0] = '[';

  1390                             sig.insert(firstPos, "_3");

  1391                         } else {

  1392                             returnType[0] = ch;

  1393                         }

  1394                     }

  1395                     array = false;

  1396                     continue;

  1397                 case 'V':

  1398                     assert !count;

  1399                     returnType[0] = 'V';

  1400                     sig.insert(firstPos, 'V');

  1401                     continue;

  1402                 case 'L':

  1403                     int next = descriptor.indexOf(';', i);

  1404                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1405                     if (count) {

  1406                         if (array) {

  1407                             sig.append("_3");

  1408                         }

  1409                         sig.append(realSig);

  1410                         cnt.append('0');

  1411                     } else {

  1412                         sig.insert(firstPos, realSig);

  1413                         if (array) {

  1414                             sig.insert(firstPos, "_3");

  1415                         }

  1416                         returnType[0] = 'L';

  1417                     }

  1418                     i = next + 1;

  1419                     array = false;

  1420                     continue;

  1421                 case '[':

  1422                     array = true;

  1423                     continue;

  1424                 default:

  1425                     throw new IllegalStateException("Invalid char: " + ch);

  1426             }

  1427         }

  1428     }

  1430     static String mangleSig(String sig) {

  1431         return mangleSig(sig, 0, sig.length());

  1432     }

  1434     private static String mangleSig(String txt, int first, int last) {

  1435         StringBuilder sb = new StringBuilder();

  1436         for (int i = first; i < last; i++) {

  1437             final char ch = txt.charAt(i);

  1438             switch (ch) {

  1439                 case '/': sb.append('_'); break;

  1440                 case '_': sb.append("_1"); break;

  1441                 case ';': sb.append("_2"); break;

  1442                 case '[': sb.append("_3"); break;

  1443                 default: sb.append(ch); break;

  1444             }

  1445         }

  1446         return sb.toString();

  1447     }

  1449     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1450         StringBuilder name = new StringBuilder();

  1451         if ("<init>".equals(m.getName())) { // NOI18N

  1452             name.append("cons"); // NOI18N

  1453         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1454             name.append("class"); // NOI18N

  1455         } else {

  1456             name.append(m.getName());

  1457         }

  1459         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1460         return name.toString();

  1461     }

  1463     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1464         StringBuilder name = new StringBuilder();

  1465         String descr = mi[2];//mi.getDescriptor();

  1466         String nm= mi[1];

  1467         if ("<init>".equals(nm)) { // NOI18N

  1468             name.append("cons"); // NOI18N

  1469         } else {

  1470             name.append(nm);

  1471         }

  1472         countArgs(descr, returnType, name, cnt);

  1473         return name.toString();

  1474     }

  1476     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1477     throws IOException {

  1478         int methodIndex = readUShortArg(byteCodes, i);

  1479         String[] mi = jc.getFieldInfoName(methodIndex);

  1480         char[] returnType = { 'V' };

  1481         StringBuilder cnt = new StringBuilder();

  1482         String mn = findMethodName(mi, cnt, returnType);

  1484         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1485         final Variable[] vars = new Variable[numArguments];

  1487         for (int j = numArguments - 1; j >= 0; --j) {

  1488             vars[j] = mapper.pop();

  1489         }

  1491         if (returnType[0] != 'V') {

  1492             out.append("var ")

  1493                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1494                .append(" = ");

  1495         }

  1497         final String in = mi[0];

  1498         out.append(accessClass(in.replace('/', '_')));

  1499         out.append("(false).");

  1500         if (mn.startsWith("cons_")) {

  1501             out.append("constructor.");

  1502         }

  1503         out.append(mn);

  1504         if (isStatic) {

  1505             out.append('(');

  1506         } else {

  1507             out.append(".call(");

  1508         }

  1509         if (numArguments > 0) {

  1510             out.append(vars[0]);

  1511             for (int j = 1; j < numArguments; ++j) {

  1512                 out.append(", ");

  1513                 out.append(vars[j]);

  1514             }

  1515         }

  1516         out.append(");");

  1517         i += 2;

  1518         addReference(in);

  1519         return i;

  1520     }

  1521     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1522     throws IOException {

  1523         int methodIndex = readUShortArg(byteCodes, i);

  1524         String[] mi = jc.getFieldInfoName(methodIndex);

  1525         char[] returnType = { 'V' };

  1526         StringBuilder cnt = new StringBuilder();

  1527         String mn = findMethodName(mi, cnt, returnType);

  1529         final int numArguments = cnt.length() + 1;

  1530         final Variable[] vars = new Variable[numArguments];

  1532         for (int j = numArguments - 1; j >= 0; --j) {

  1533             vars[j] = mapper.pop();

  1534         }

  1536         if (returnType[0] != 'V') {

  1537             out.append("var ")

  1538                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1539                .append(" = ");

  1540         }

  1542         out.append(vars[0]).append('.');

  1543         out.append(mn);

  1544         out.append('(');

  1545         String sep = "";

  1546         for (int j = 1; j < numArguments; ++j) {

  1547             out.append(sep);

  1548             out.append(vars[j]);

  1549             sep = ", ";

  1550         }

  1551         out.append(");");

  1552         i += 2;

  1553         return i;

  1554     }

  1556     private void addReference(String cn) throws IOException {

  1557         if (requireReference(cn)) {

  1558             debug(" /* needs " + cn + " */");

  1559         }

  1560     }

  1562     private void outType(String d, StringBuilder out) {

  1563         int arr = 0;

  1564         while (d.charAt(0) == '[') {

  1565             out.append('A');

  1566             d = d.substring(1);

  1567         }

  1568         if (d.charAt(0) == 'L') {

  1569             assert d.charAt(d.length() - 1) == ';';

  1570             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1571         } else {

  1572             out.append(d);

  1573         }

  1574     }

  1576     private String encodeConstant(int entryIndex) throws IOException {

  1577         String[] classRef = { null };

  1578         String s = jc.stringValue(entryIndex, classRef);

  1579         if (classRef[0] != null) {

  1580             if (classRef[0].startsWith("[")) {

  1581                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1582             } else {

  1583                 addReference(classRef[0]);

  1584                 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";

  1585             }

  1586         }

  1587         return s;

  1588     }

  1590     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1591         byte[] arr = m.findAnnotationData(true);

  1592         if (arr == null) {

  1593             return null;

  1594         }

  1595         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1596         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1597         class P extends AnnotationParser {

  1598             public P() {

  1599                 super(false, true);

  1600             }

  1602             int cnt;

  1603             String[] args = new String[30];

  1604             String body;

  1605             boolean javacall;

  1607             @Override

  1608             protected void visitAttr(String type, String attr, String at, String value) {

  1609                 if (type.equals(jvmType)) {

  1610                     if ("body".equals(attr)) {

  1611                         body = value;

  1612                     } else if ("args".equals(attr)) {

  1613                         args[cnt++] = value;

  1614                     } else {

  1615                         throw new IllegalArgumentException(attr);

  1616                     }

  1617                 }

  1618                 if (type.equals(htmlType)) {

  1619                     if ("body".equals(attr)) {

  1620                         body = value;

  1621                     } else if ("args".equals(attr)) {

  1622                         args[cnt++] = value;

  1623                     } else if ("javacall".equals(attr)) {

  1624                         javacall = "1".equals(value);

  1625                     } else {

  1626                         throw new IllegalArgumentException(attr);

  1627                     }

  1628                 }

  1629             }

  1630         }

  1631         P p = new P();

  1632         p.parse(arr, jc);

  1633         if (p.body == null) {

  1634             return null;

  1635         }

  1636         StringBuilder cnt = new StringBuilder();

  1637         final String mn = findMethodName(m, cnt);

  1638         out.append(destObject).append(".").append(mn);

  1639         out.append(" = function(");

  1640         String space = "";

  1641         int index = 0;

  1642         for (int i = 0; i < cnt.length(); i++) {

  1643             out.append(space);

  1644             space = outputArg(out, p.args, index);

  1645             index++;

  1646         }

  1647         out.append(") {").append("\n");

  1648         if (p.javacall) {

  1649             int lastSlash = jc.getClassName().lastIndexOf('/');

  1650             final String pkg = jc.getClassName().substring(0, lastSlash);

  1651             out.append(mangleCallbacks(pkg, p.body));

  1652             requireReference(pkg + "/$JsCallbacks$");

  1653         } else {

  1654             out.append(p.body);

  1655         }

  1656         out.append("\n}\n");

  1657         return mn;

  1658     }

  1660     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1661         StringBuilder sb = new StringBuilder();

  1662         int pos = 0;

  1663         for (;;) {

  1664             int next = body.indexOf(".@", pos);

  1665             if (next == -1) {

  1666                 sb.append(body.substring(pos));

  1667                 body = sb.toString();

  1668                 break;

  1669             }

  1670             int ident = next;

  1671             while (ident > 0) {

  1672                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1673                     ident++;

  1674                     break;

  1675                 }

  1676             }

  1677             String refId = body.substring(ident, next);

  1679             sb.append(body.substring(pos, ident));

  1681             int sigBeg = body.indexOf('(', next);

  1682             int sigEnd = body.indexOf(')', sigBeg);

  1683             int colon4 = body.indexOf("::", next);

  1684             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1685                 throw new IllegalStateException("Malformed body " + body);

  1686             }

  1687             String fqn = body.substring(next + 2, colon4);

  1688             String method = body.substring(colon4 + 2, sigBeg);

  1689             String params = body.substring(sigBeg, sigEnd + 1);

  1691             int paramBeg = body.indexOf('(', sigEnd + 1);

  1693             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1694             sb.append(mangle(fqn, method, params, false));

  1695             sb.append("(").append(refId);

  1696             if (body.charAt(paramBeg + 1) != ')') {

  1697                 sb.append(",");

  1698             }

  1699             pos = paramBeg + 1;

  1700         }

  1701         sb = null;

  1702         pos = 0;

  1703         for (;;) {

  1704             int next = body.indexOf("@", pos);

  1705             if (next == -1) {

  1706                 if (sb == null) {

  1707                     return body;

  1708                 }

  1709                 sb.append(body.substring(pos));

  1710                 return sb;

  1711             }

  1712             if (sb == null) {

  1713                 sb = new StringBuilder();

  1714             }

  1716             sb.append(body.substring(pos, next));

  1718             int sigBeg = body.indexOf('(', next);

  1719             int sigEnd = body.indexOf(')', sigBeg);

  1720             int colon4 = body.indexOf("::", next);

  1721             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1722                 throw new IllegalStateException("Malformed body " + body);

  1723             }

  1724             String fqn = body.substring(next + 1, colon4);

  1725             String method = body.substring(colon4 + 2, sigBeg);

  1726             String params = body.substring(sigBeg, sigEnd + 1);

  1728             int paramBeg = body.indexOf('(', sigEnd + 1);

  1730             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1731             sb.append(mangle(fqn, method, params, true));

  1732             sb.append("(");

  1733             pos = paramBeg + 1;

  1734         }

  1735     }

  1736     private static String mangle(String fqn, String method, String params, boolean isStatic) {

  1737         if (params.startsWith("(")) {

  1738             params = params.substring(1);

  1739         }

  1740         if (params.endsWith(")")) {

  1741             params = params.substring(0, params.length() - 1);

  1742         }

  1743         StringBuilder sb = new StringBuilder();

  1744         final String rfqn = replace(fqn);

  1745         sb.append(rfqn).append("__").append(method).append("____Ljava_lang_Object_2");

  1746         if (!isStatic) {

  1747             sb.append('L').append(rfqn).append("_2");

  1748         }

  1749         sb.append(params);

  1750         return sb.toString();

  1751     }

  1753     private static String replace(String orig) {

  1754         return orig.replace("_", "_1").

  1755             replace(";", "_2").

  1756             replace("[", "_3").

  1757             replace('.', '_').replace('/', '_');

  1758     }

  1760     private static String className(ClassData jc) {

  1761         //return jc.getName().getInternalName().replace('/', '_');

  1762         return jc.getClassName().replace('/', '_');

  1763     }

  1765     private static String[] findAnnotation(

  1766         byte[] arr, ClassData cd, final String className,

  1767         final String... attrNames

  1768     ) throws IOException {

  1769         if (arr == null) {

  1770             return null;

  1771         }

  1772         final String[] values = new String[attrNames.length];

  1773         final boolean[] found = { false };

  1774         final String jvmType = "L" + className.replace('.', '/') + ";";

  1775         AnnotationParser ap = new AnnotationParser(false, true) {

  1776             @Override

  1777             protected void visitAttr(String type, String attr, String at, String value) {

  1778                 if (type.equals(jvmType)) {

  1779                     found[0] = true;

  1780                     for (int i = 0; i < attrNames.length; i++) {

  1781                         if (attrNames[i].equals(attr)) {

  1782                             values[i] = value;

  1783                         }

  1784                     }

  1785                 }

  1786             }

  1788         };

  1789         ap.parse(arr, cd);

  1790         return found[0] ? values : null;

  1791     }

  1793     private CharSequence initField(FieldData v) {

  1794         final String is = v.getInternalSig();

  1795         if (is.length() == 1) {

  1796             switch (is.charAt(0)) {

  1797                 case 'S':

  1798                 case 'J':

  1799                 case 'B':

  1800                 case 'Z':

  1801                 case 'C':

  1802                 case 'I': return " = 0;";

  1803                 case 'F':

  1804                 case 'D': return " = 0.0;";

  1805                 default:

  1806                     throw new IllegalStateException(is);

  1807             }

  1808         }

  1809         return " = null;";

  1810     }

  1812     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1813         AnnotationParser ap = new AnnotationParser(true, false) {

  1814             int[] cnt = new int[32];

  1815             int depth;

  1817             @Override

  1818             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1819                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1820                 requireReference(slashType);

  1822                 if (cnt[depth]++ > 0) {

  1823                     out.append(",");

  1824                 }

  1825                 if (top) {

  1826                     out.append('"').append(attrType).append("\" : ");

  1827                 }

  1828                 out.append("{\n");

  1829                 cnt[++depth] = 0;

  1830             }

  1832             @Override

  1833             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1834                 out.append("\n}\n");

  1835                 depth--;

  1836             }

  1838             @Override

  1839             protected void visitValueStart(String attrName, char type) throws IOException {

  1840                 if (cnt[depth]++ > 0) {

  1841                     out.append(",\n");

  1842                 }

  1843                 cnt[++depth] = 0;

  1844                 if (attrName != null) {

  1845                     out.append(attrName).append(" : ");

  1846                 }

  1847                 if (type == '[') {

  1848                     out.append("[");

  1849                 }

  1850             }

  1852             @Override

  1853             protected void visitValueEnd(String attrName, char type) throws IOException {

  1854                 if (type == '[') {

  1855                     out.append("]");

  1856                 }

  1857                 depth--;

  1858             }

  1860             @Override

  1861             protected void visitAttr(String type, String attr, String attrType, String value)

  1862             throws IOException {

  1863                 if (attr == null && value == null) {

  1864                     return;

  1865                 }

  1866                 out.append(value);

  1867             }

  1869             @Override

  1870             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1871             throws IOException {

  1872                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1873                 requireReference(slashType);

  1875                 out.append(accessClass(slashType.replace('/', '_')))

  1876                    .append("(false).constructor.").append(value);

  1877             }

  1878         };

  1879         ap.parse(data, cd);

  1880     }

  1882     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1883         final String name = args[indx];

  1884         if (name == null) {

  1885             return "";

  1886         }

  1887         if (name.contains(",")) {

  1888             throw new IOException("Wrong parameter with ',': " + name);

  1889         }

  1890         out.append(name);

  1891         return ",";

  1892     }

  1894     private static void emit(final Appendable out,

  1895                              final String format,

  1896                              final CharSequence... params) throws IOException {

  1897         final int length = format.length();

  1899         int processed = 0;

  1900         int paramOffset = format.indexOf('@');

  1901         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1902             final char paramChar = format.charAt(paramOffset + 1);

  1903             if ((paramChar >= '1') && (paramChar <= '9')) {

  1904                 final int paramIndex = paramChar - '0' - 1;

  1906                 out.append(format, processed, paramOffset);

  1907                 out.append(params[paramIndex]);

  1909                 ++paramOffset;

  1910                 processed = paramOffset + 1;

  1911             }

  1913             paramOffset = format.indexOf('@', paramOffset + 1);

  1914         }

  1916         out.append(format, processed, length);

  1917     }

  1919     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1920         out.append("} catch (e) {\n");

  1921         int finallyPC = -1;

  1922         for (TrapData e : traps) {

  1923             if (e == null) {

  1924                 break;

  1925             }

  1926             if (e.catch_cpx != 0) { //not finally

  1927                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1928                 addReference(classInternalName);

  1929                 out.append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  1930                 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1931                 out.append("var stA0 = e;");

  1932                 goTo(out, current, e.handler_pc, topMostLabel);

  1933                 out.append("}\n");

  1934             } else {

  1935                 finallyPC = e.handler_pc;

  1936             }

  1937         }

  1938         if (finallyPC == -1) {

  1939             out.append("throw e;");

  1940         } else {

  1941             out.append("var stA0 = e;");

  1942             goTo(out, current, finallyPC, topMostLabel);

  1943         }

  1944         out.append("\n}");

  1945     }

  1947     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1948         if (to < current) {

  1949             if (canBack < to) {

  1950                 out.append("{ gt = 0; continue X_" + to + "; }");

  1951             } else {

  1952                 out.append("{ gt = " + to + "; continue X_0; }");

  1953             }

  1954         } else {

  1955             out.append("{ gt = " + to + "; break IF; }");

  1956         }

  1957     }

  1959     private static void emitIf(

  1960         Appendable out, String pattern, Variable param,

  1961         int current, int to, int canBack

  1962     ) throws IOException {

  1963         emit(out, pattern, param);

  1964         goTo(out, current, to, canBack);

  1965     }

  1967     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  1968         String jvmType;

  1969         switch (atype) {

  1970             case 4: jvmType = "[Z"; break;

  1971             case 5: jvmType = "[C"; break;

  1972             case 6: jvmType = "[F"; break;

  1973             case 7: jvmType = "[D"; break;

  1974             case 8: jvmType = "[B"; break;

  1975             case 9: jvmType = "[S"; break;

  1976             case 10: jvmType = "[I"; break;

  1977             case 11: jvmType = "[J"; break;

  1978             default: throw new IllegalStateException("Array type: " + atype);

  1979         }

  1980         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  1981              smapper.popI(), smapper.pushA(), jvmType);

  1982     }

  1984     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  1985         String typeName = jc.getClassName(type);

  1986         if (typeName.startsWith("[")) {

  1987             typeName = "[" + typeName;

  1988         } else {

  1989             typeName = "[L" + typeName + ";";

  1990         }

  1991         emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  1992              smapper.popI(), smapper.pushA(), typeName);

  1993     }

  1995     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  1996         String typeName = jc.getClassName(type);

  1997         int dim = readUByte(byteCodes, ++i);

  1998         StringBuilder dims = new StringBuilder();

  1999         dims.append('[');

  2000         for (int d = 0; d < dim; d++) {

  2001             if (d != 0) {

  2002                 dims.insert(1, ",");

  2003             }

  2004             dims.insert(1, smapper.popI());

  2005         }

  2006         dims.append(']');

  2007         emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  2008              dims.toString(), smapper.pushA(), typeName);

  2009         return i;

  2010     }

  2012     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2013         int table = i / 4 * 4 + 4;

  2014         int dflt = i + readInt4(byteCodes, table);

  2015         table += 4;

  2016         int low = readInt4(byteCodes, table);

  2017         table += 4;

  2018         int high = readInt4(byteCodes, table);

  2019         table += 4;

  2020         out.append("switch (").append(smapper.popI()).append(") {\n");

  2021         while (low <= high) {

  2022             int offset = i + readInt4(byteCodes, table);

  2023             table += 4;

  2024             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  2025             low++;

  2026         }

  2027         out.append("  default: ");

  2028         goTo(out, i, dflt, topMostLabel);

  2029         out.append("\n}");

  2030         i = table - 1;

  2031         return i;

  2032     }

  2034     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2035         int table = i / 4 * 4 + 4;

  2036         int dflt = i + readInt4(byteCodes, table);

  2037         table += 4;

  2038         int n = readInt4(byteCodes, table);

  2039         table += 4;

  2040         out.append("switch (").append(smapper.popI()).append(") {\n");

  2041         while (n-- > 0) {

  2042             int cnstnt = readInt4(byteCodes, table);

  2043             table += 4;

  2044             int offset = i + readInt4(byteCodes, table);

  2045             table += 4;

  2046             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  2047         }

  2048         out.append("  default: ");

  2049         goTo(out, i, dflt, topMostLabel);

  2050         out.append("\n}");

  2051         i = table - 1;

  2052         return i;

  2053     }

  2055     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2056         final String type = jc.getClassName(indx);

  2057         if (!type.startsWith("[")) {

  2058             emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  2059                  smapper.popA(), smapper.pushI(),

  2060                  type.replace('/', '_'));

  2061         } else {

  2062             emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  2063                 smapper.popA(), smapper.pushI(),

  2064                 type

  2065             );

  2066         }

  2067     }

  2069     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2070         final String type = jc.getClassName(indx);

  2071         if (!type.startsWith("[")) {

  2072             emit(out,

  2073                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  2074                  smapper.getA(0), type.replace('/', '_'));

  2075         } else {

  2076             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);",

  2077                  smapper.getA(0), type

  2078             );

  2079         }

  2080     }

  2082     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2083         for (int j = prev; j <= i; j++) {

  2084             out.append(" ");

  2085             final int cc = readUByte(byteCodes, j);

  2086             out.append(Integer.toString(cc));

  2087         }

  2088     }

  2089 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Thu, 11 Jul 2013 22:36:01 +0200
changeset 1243	c3e68a67d46d
parent 1242	c1097ab15f48
child 1244	4b43ab1f72e8
permissions	-rw-r--r--