hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@d2401e2648af

     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 implements Appendable {

    29     private ClassData jc;

    30     private final Appendable out;

    31     private boolean outChanged;

    33     protected ByteCodeToJavaScript(Appendable out) {

    34         this.out = out;

    35     }

    37     @Override

    38     public final Appendable append(CharSequence csq) throws IOException {

    39         out.append(csq);

    40         outChanged = true;

    41         return this;

    42     }

    44     @Override

    45     public final Appendable append(CharSequence csq, int start, int end) throws IOException {

    46         out.append(csq, start, end);

    47         outChanged = true;

    48         return this;

    49     }

    51     @Override

    52     public final Appendable append(char c) throws IOException {

    53         out.append(c);

    54         outChanged = true;

    55         return this;

    56     }

    58     /* Collects additional required resources.

    59      *

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

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

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

    63      */

    64     protected abstract boolean requireReference(String internalClassName);

    66     /*

    67      * @param resourcePath name of resources to read

    68      */

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

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

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

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

    74      *

    75      * @param className suggested name of the class

    76      */

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

    78         return className + " = ";

    79     }

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

    81         return classOperation;

    82     }

    84     protected String accessField(String object, String mangledName,

    85                                  String[] fieldInfoName) throws IOException {

    86         return object + "." + mangledName;

    87     }

    89     protected String accessStaticMethod(

    90                              String object,

    91                              String mangledName,

    92                              String[] fieldInfoName) throws IOException {

    93         return object + "." + mangledName;

    94     }

    96     protected String accessVirtualMethod(

    97                              String object,

    98                              String mangledName,

    99                              String[] fieldInfoName) throws IOException {

   100         return object + "." + mangledName;

   101     }

   103     protected void declaredClass(ClassData classData, String mangledName)

   104             throws IOException {

   105     }

   107     protected void declaredField(FieldData fieldData,

   108                                  String destObject,

   109                                  String mangledName) throws IOException {

   110     }

   112     protected void declaredMethod(MethodData methodData,

   113                                   String destObject,

   114                                   String mangledName) throws IOException {

   115     }

   117     /** Prints out a debug message.

   118      *

   119      * @param msg the message

   120      * @return true if the message has been printed

   121      * @throws IOException

   122      */

   123     boolean debug(String msg) throws IOException {

   124         append(msg);

   125         return true;

   126     }

   128     /**

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

   130      *

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

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

   133      *

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

   135      */

   137     public String compile(InputStream classFile) throws IOException {

   138         return compile(new ClassData(classFile));

   139     }

   141     protected String compile(ClassData classData) throws IOException {

   142         this.jc = classData;

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

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

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

   146             );

   147         }

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

   149         {

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

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

   152                 "resource", "processByteCode"

   153             );

   154             if (arr != null) {

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

   156                     requireScript(arr[0]);

   157                 }

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

   159                     return null;

   160                 }

   161             }

   162         }

   163         {

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

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

   166                 "value"

   167             );

   168             if (arr != null) {

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

   170                     requireScript(arr[0]);

   171                 } else {

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

   173                     requireScript(

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

   175                     );

   176                 }

   177             }

   178         }

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

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

   181             "container", "prototype"

   182         );

   183         StringArray toInitilize = new StringArray();

   184         final String className = className(jc);

   185         append("\n\n").append(assignClass(className));

   186         append("function ").append(className).append("() {");

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

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

   189         if (proto == null) {

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

   191             append("\n    var pp = ").

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

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

   194             append("\n    var c = p;");

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

   196         } else {

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

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

   199                 proto[0] = "p";

   200             }

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

   202             append("\n    var sprcls = null;");

   203         }

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

   205             if (v.isStatic()) {

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

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

   208                         continue;

   209                     }

   210                 }

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

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

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

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

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

   216             } else {

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

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

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

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

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

   222                    .append("; };");

   223             }

   225             declaredField(v, "c", "_" + v.getName());

   226         }

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

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

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

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

   231                 "name", "value"

   232             );

   233             if (only != null) {

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

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

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

   237                 }

   238                 continue;

   239             }

   240             String destObject;

   241             String mn;

   242             append("\n    ");

   243             if (m.isStatic()) {

   244                 destObject = "c";

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

   246             } else {

   247                 if (m.isConstructor()) {

   248                     destObject = "CLS";

   249                     mn = generateInstanceMethod(destObject, m);

   250                 } else {

   251                     destObject = "c";

   252                     mn = generateInstanceMethod(destObject, m);

   253                 }

   254             }

   255             declaredMethod(m, destObject, mn);

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

   257             if (runAnno != null) {

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

   259                 generateAnno(jc, runAnno);

   260                 append("\n    };");

   261             }

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

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

   264         }

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

   266         append("\n    function fillInstOf(x) {");

   267         String instOfName = "$instOf_" + className;

   268         append("\n        x['").append(instOfName).append("'] = true;");

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

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

   271             append("\n      vm.").append(intrfc).append("(false)['fillInstOf'](x);");

   272             requireReference(superInterface);

   273         }

   274         append("\n    }");

   275         append("\n    c['fillInstOf'] = fillInstOf;");

   276         append("\n    fillInstOf(c);");

   277 //        obfuscationDelegate.exportJSProperty(this, "c", instOfName);

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

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

   280         append(accessClass("java_lang_Class(true);"));

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

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

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

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

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

   286         if (classAnno != null) {

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

   288             generateAnno(jc, classAnno);

   289             append("\n    };");

   290         }

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

   292             append("\n    ").append(init).append("();");

   293         }

   294         append("\n  }");

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

   296         append("\n    if (!(this instanceof CLS)) {");

   297         append("\n      return new CLS();");

   298         append("\n    }");

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

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

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

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

   303                 "name", "value"

   304             );

   305             if (only != null) {

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

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

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

   309                 }

   310                 continue;

   311             }

   312             if (!v.isStatic()) {

   313                 append("\n    this.fld_").

   314                     append(className).append('_').

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

   316             }

   317         }

   318         append("\n    return this;");

   319         append("\n  }");

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

   321         append("\n};");

   323         declaredClass(jc, className);

   325 //        StringBuilder sb = new StringBuilder();

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

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

   328 //        }

   329         return "";

   330     }

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

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

   333         if (jsb != null) {

   334             return jsb;

   335         }

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

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

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

   339         }

   340         generateMethod(destObject, mn, m);

   341         return mn;

   342     }

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

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

   346         if (jsb != null) {

   347             return jsb;

   348         }

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

   350         generateMethod(destObject, mn, m);

   351         return mn;

   352     }

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

   355             throws IOException {

   356         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   357         TrapDataIterator trap = m.getTrapDataIterator();

   358         final LocalsMapper lmapper =

   359                 new LocalsMapper(stackMapIterator.getArguments());

   361         append(destObject).append(".").append(name).append(" = function(");

   362         lmapper.outputArguments(this, m.isStatic());

   363         append(") {").append("\n");

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

   366         if (byteCodes == null) {

   367             append("  throw 'no code found for ")

   368                .append(jc.getClassName()).append('.')

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

   370             append("};");

   371             return;

   372         }

   374         final StackMapper smapper = new StackMapper();

   376         if (!m.isStatic()) {

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

   378         }

   380         int lastStackFrame;

   381         TrapData[] previousTrap = null;

   382         boolean wide = false;

   383         boolean didBranches;

   384         if (stackMapIterator.isEmpty()) {

   385             didBranches = false;

   386             lastStackFrame = 0;

   387         } else {

   388             didBranches = true;

   389             lastStackFrame = -1;

   390             append("\n  var gt = 0;\n");

   391         }

   393         int openBraces = 0;

   394         int topMostLabel = 0;

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

   396             int prev = i;

   397             outChanged = false;

   398             stackMapIterator.advanceTo(i);

   399             boolean changeInCatch = trap.advanceTo(i);

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

   401                 if (previousTrap != null) {

   402                     generateCatch(previousTrap, i, topMostLabel);

   403                     previousTrap = null;

   404                 }

   405             }

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

   407                 smapper.flush(this);

   408                 if (i != 0) {

   409                     append("    }\n");

   410                 }

   411                 if (openBraces > 64) {

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

   413                         append("break;}\n");

   414                     }

   415                     openBraces = 1;

   416                     topMostLabel = i;

   417                 }

   419                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   423                 openBraces++;

   424                 changeInCatch = true;

   425             } else {

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

   427             }

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

   429                 append("try {");

   430                 previousTrap = trap.current();

   431             }

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

   433             switch (c) {

   434                 case opc_aload_0:

   435                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(0));

   436                     break;

   437                 case opc_iload_0:

   438                     smapper.assign(this, VarType.INTEGER, lmapper.getI(0));

   439                     break;

   440                 case opc_lload_0:

   441                     smapper.assign(this, VarType.LONG, lmapper.getL(0));

   442                     break;

   443                 case opc_fload_0:

   444                     smapper.assign(this, VarType.FLOAT, lmapper.getF(0));

   445                     break;

   446                 case opc_dload_0:

   447                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(0));

   448                     break;

   449                 case opc_aload_1:

   450                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(1));

   451                     break;

   452                 case opc_iload_1:

   453                     smapper.assign(this, VarType.INTEGER, lmapper.getI(1));

   454                     break;

   455                 case opc_lload_1:

   456                     smapper.assign(this, VarType.LONG, lmapper.getL(1));

   457                     break;

   458                 case opc_fload_1:

   459                     smapper.assign(this, VarType.FLOAT, lmapper.getF(1));

   460                     break;

   461                 case opc_dload_1:

   462                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(1));

   463                     break;

   464                 case opc_aload_2:

   465                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(2));

   466                     break;

   467                 case opc_iload_2:

   468                     smapper.assign(this, VarType.INTEGER, lmapper.getI(2));

   469                     break;

   470                 case opc_lload_2:

   471                     smapper.assign(this, VarType.LONG, lmapper.getL(2));

   472                     break;

   473                 case opc_fload_2:

   474                     smapper.assign(this, VarType.FLOAT, lmapper.getF(2));

   475                     break;

   476                 case opc_dload_2:

   477                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(2));

   478                     break;

   479                 case opc_aload_3:

   480                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(3));

   481                     break;

   482                 case opc_iload_3:

   483                     smapper.assign(this, VarType.INTEGER, lmapper.getI(3));

   484                     break;

   485                 case opc_lload_3:

   486                     smapper.assign(this, VarType.LONG, lmapper.getL(3));

   487                     break;

   488                 case opc_fload_3:

   489                     smapper.assign(this, VarType.FLOAT, lmapper.getF(3));

   490                     break;

   491                 case opc_dload_3:

   492                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(3));

   493                     break;

   494                 case opc_iload: {

   495                     ++i;

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

   497                                           : readUByte(byteCodes, i);

   498                     wide = false;

   499                     smapper.assign(this, VarType.INTEGER, lmapper.getI(indx));

   500                     break;

   501                 }

   502                 case opc_lload: {

   503                     ++i;

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

   505                                           : readUByte(byteCodes, i);

   506                     wide = false;

   507                     smapper.assign(this, VarType.LONG, lmapper.getL(indx));

   508                     break;

   509                 }

   510                 case opc_fload: {

   511                     ++i;

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

   513                                           : readUByte(byteCodes, i);

   514                     wide = false;

   515                     smapper.assign(this, VarType.FLOAT, lmapper.getF(indx));

   516                     break;

   517                 }

   518                 case opc_dload: {

   519                     ++i;

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

   521                                           : readUByte(byteCodes, i);

   522                     wide = false;

   523                     smapper.assign(this, VarType.DOUBLE, lmapper.getD(indx));

   524                     break;

   525                 }

   526                 case opc_aload: {

   527                     ++i;

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

   529                                           : readUByte(byteCodes, i);

   530                     wide = false;

   531                     smapper.assign(this, VarType.REFERENCE, lmapper.getA(indx));

   532                     break;

   533                 }

   534                 case opc_istore: {

   535                     ++i;

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

   537                                           : readUByte(byteCodes, i);

   538                     wide = false;

   539                     emit(smapper, this, "var @1 = @2;",

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

   541                     break;

   542                 }

   543                 case opc_lstore: {

   544                     ++i;

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

   546                                           : readUByte(byteCodes, i);

   547                     wide = false;

   548                     emit(smapper, this, "var @1 = @2;",

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

   550                     break;

   551                 }

   552                 case opc_fstore: {

   553                     ++i;

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

   555                                           : readUByte(byteCodes, i);

   556                     wide = false;

   557                     emit(smapper, this, "var @1 = @2;",

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

   559                     break;

   560                 }

   561                 case opc_dstore: {

   562                     ++i;

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

   564                                           : readUByte(byteCodes, i);

   565                     wide = false;

   566                     emit(smapper, this, "var @1 = @2;",

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

   568                     break;

   569                 }

   570                 case opc_astore: {

   571                     ++i;

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

   573                                           : readUByte(byteCodes, i);

   574                     wide = false;

   575                     emit(smapper, this, "var @1 = @2;",

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

   577                     break;

   578                 }

   579                 case opc_astore_0:

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

   581                     break;

   582                 case opc_istore_0:

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

   584                     break;

   585                 case opc_lstore_0:

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

   587                     break;

   588                 case opc_fstore_0:

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

   590                     break;

   591                 case opc_dstore_0:

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

   593                     break;

   594                 case opc_astore_1:

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

   596                     break;

   597                 case opc_istore_1:

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

   599                     break;

   600                 case opc_lstore_1:

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

   602                     break;

   603                 case opc_fstore_1:

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

   605                     break;

   606                 case opc_dstore_1:

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

   608                     break;

   609                 case opc_astore_2:

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

   611                     break;

   612                 case opc_istore_2:

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

   614                     break;

   615                 case opc_lstore_2:

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

   617                     break;

   618                 case opc_fstore_2:

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

   620                     break;

   621                 case opc_dstore_2:

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

   623                     break;

   624                 case opc_astore_3:

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

   626                     break;

   627                 case opc_istore_3:

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

   629                     break;

   630                 case opc_lstore_3:

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

   632                     break;

   633                 case opc_fstore_3:

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

   635                     break;

   636                 case opc_dstore_3:

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

   638                     break;

   639                 case opc_iadd:

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

   641                     break;

   642                 case opc_ladd:

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

   644                     break;

   645                 case opc_fadd:

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

   647                     break;

   648                 case opc_dadd:

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

   650                     break;

   651                 case opc_isub:

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

   653                     break;

   654                 case opc_lsub:

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

   656                     break;

   657                 case opc_fsub:

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

   659                     break;

   660                 case opc_dsub:

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

   662                     break;

   663                 case opc_imul:

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

   665                     break;

   666                 case opc_lmul:

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

   668                     break;

   669                 case opc_fmul:

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

   671                     break;

   672                 case opc_dmul:

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

   674                     break;

   675                 case opc_idiv:

   676                     smapper.replace(this, VarType.INTEGER, "(@1).div32(@2)",

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

   678                     break;

   679                 case opc_ldiv:

   680                     smapper.replace(this, VarType.LONG, "(@1).div64(@2)",

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

   682                     break;

   683                 case opc_fdiv:

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

   685                     break;

   686                 case opc_ddiv:

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

   688                     break;

   689                 case opc_irem:

   690                     smapper.replace(this, VarType.INTEGER, "(@1).mod32(@2)",

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

   692                     break;

   693                 case opc_lrem:

   694                     smapper.replace(this, VarType.LONG, "(@1).mod64(@2)",

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

   696                     break;

   697                 case opc_frem:

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

   699                     break;

   700                 case opc_drem:

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

   702                     break;

   703                 case opc_iand:

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

   705                     break;

   706                 case opc_land:

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

   708                     break;

   709                 case opc_ior:

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

   711                     break;

   712                 case opc_lor:

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

   714                     break;

   715                 case opc_ixor:

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

   717                     break;

   718                 case opc_lxor:

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

   720                     break;

   721                 case opc_ineg:

   722                     smapper.replace(this, VarType.INTEGER, "(@1).neg32()", smapper.getI(0));

   723                     break;

   724                 case opc_lneg:

   725                     smapper.replace(this, VarType.LONG, "(@1).neg64()", smapper.getL(0));

   726                     break;

   727                 case opc_fneg:

   728                     smapper.replace(this, VarType.FLOAT, "(-@1)", smapper.getF(0));

   729                     break;

   730                 case opc_dneg:

   731                     smapper.replace(this, VarType.DOUBLE, "(-@1)", smapper.getD(0));

   732                     break;

   733                 case opc_ishl:

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

   735                     break;

   736                 case opc_lshl:

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

   738                     break;

   739                 case opc_ishr:

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

   741                     break;

   742                 case opc_lshr:

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

   744                     break;

   745                 case opc_iushr:

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

   747                     break;

   748                 case opc_lushr:

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

   750                     break;

   751                 case opc_iinc: {

   752                     ++i;

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

   754                                              : readUByte(byteCodes, i);

   755                     ++i;

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

   757                                             : byteCodes[i];

   758                     wide = false;

   759                     if (incrBy == 1) {

   760                         emit(smapper, this, "@1++;", lmapper.getI(varIndx));

   761                     } else {

   762                         emit(smapper, this, "@1 += @2;",

   763                              lmapper.getI(varIndx),

   764                              Integer.toString(incrBy));

   765                     }

   766                     break;

   767                 }

   768                 case opc_return:

   769                     emit(smapper, this, "return;");

   770                     break;

   771                 case opc_ireturn:

   772                     emit(smapper, this, "return @1;", smapper.popI());

   773                     break;

   774                 case opc_lreturn:

   775                     emit(smapper, this, "return @1;", smapper.popL());

   776                     break;

   777                 case opc_freturn:

   778                     emit(smapper, this, "return @1;", smapper.popF());

   779                     break;

   780                 case opc_dreturn:

   781                     emit(smapper, this, "return @1;", smapper.popD());

   782                     break;

   783                 case opc_areturn:

   784                     emit(smapper, this, "return @1;", smapper.popA());

   785                     break;

   786                 case opc_i2l:

   787                     smapper.replace(this, VarType.LONG, "@1", smapper.getI(0));

   788                     break;

   789                 case opc_i2f:

   790                     smapper.replace(this, VarType.FLOAT, "@1", smapper.getI(0));

   791                     break;

   792                 case opc_i2d:

   793                     smapper.replace(this, VarType.DOUBLE, "@1", smapper.getI(0));

   794                     break;

   795                 case opc_l2i:

   796                     smapper.replace(this, VarType.INTEGER, "(@1).toInt32()", smapper.getL(0));

   797                     break;

   798                     // max int check?

   799                 case opc_l2f:

   800                     smapper.replace(this, VarType.FLOAT, "(@1).toFP()", smapper.getL(0));

   801                     break;

   802                 case opc_l2d:

   803                     smapper.replace(this, VarType.DOUBLE, "(@1).toFP()", smapper.getL(0));

   804                     break;

   805                 case opc_f2d:

   806                     smapper.replace(this, VarType.DOUBLE, "@1",

   807                          smapper.getF(0));

   808                     break;

   809                 case opc_d2f:

   810                     smapper.replace(this, VarType.FLOAT, "@1",

   811                          smapper.getD(0));

   812                     break;

   813                 case opc_f2i:

   814                     smapper.replace(this, VarType.INTEGER, "(@1).toInt32()",

   815                          smapper.getF(0));

   816                     break;

   817                 case opc_f2l:

   818                     smapper.replace(this, VarType.LONG, "(@1).toLong()",

   819                          smapper.getF(0));

   820                     break;

   821                 case opc_d2i:

   822                     smapper.replace(this, VarType.INTEGER, "(@1).toInt32()",

   823                          smapper.getD(0));

   824                     break;

   825                 case opc_d2l:

   826                     smapper.replace(this, VarType.LONG, "(@1).toLong()", smapper.getD(0));

   827                     break;

   828                 case opc_i2b:

   829                     smapper.replace(this, VarType.INTEGER, "(@1).toInt8()", smapper.getI(0));

   830                     break;

   831                 case opc_i2c:

   832                     break;

   833                 case opc_i2s:

   834                     smapper.replace(this, VarType.INTEGER, "(@1).toInt16()", smapper.getI(0));

   835                     break;

   836                 case opc_aconst_null:

   837                     smapper.assign(this, VarType.REFERENCE, "null");

   838                     break;

   839                 case opc_iconst_m1:

   840                     smapper.assign(this, VarType.INTEGER, "-1");

   841                     break;

   842                 case opc_iconst_0:

   843                     smapper.assign(this, VarType.INTEGER, "0");

   844                     break;

   845                 case opc_dconst_0:

   846                     smapper.assign(this, VarType.DOUBLE, "0");

   847                     break;

   848                 case opc_lconst_0:

   849                     smapper.assign(this, VarType.LONG, "0");

   850                     break;

   851                 case opc_fconst_0:

   852                     smapper.assign(this, VarType.FLOAT, "0");

   853                     break;

   854                 case opc_iconst_1:

   855                     smapper.assign(this, VarType.INTEGER, "1");

   856                     break;

   857                 case opc_lconst_1:

   858                     smapper.assign(this, VarType.LONG, "1");

   859                     break;

   860                 case opc_fconst_1:

   861                     smapper.assign(this, VarType.FLOAT, "1");

   862                     break;

   863                 case opc_dconst_1:

   864                     smapper.assign(this, VarType.DOUBLE, "1");

   865                     break;

   866                 case opc_iconst_2:

   867                     smapper.assign(this, VarType.INTEGER, "2");

   868                     break;

   869                 case opc_fconst_2:

   870                     smapper.assign(this, VarType.FLOAT, "2");

   871                     break;

   872                 case opc_iconst_3:

   873                     smapper.assign(this, VarType.INTEGER, "3");

   874                     break;

   875                 case opc_iconst_4:

   876                     smapper.assign(this, VarType.INTEGER, "4");

   877                     break;

   878                 case opc_iconst_5:

   879                     smapper.assign(this, VarType.INTEGER, "5");

   880                     break;

   881                 case opc_ldc: {

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

   883                     String v = encodeConstant(indx);

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

   885                     smapper.assign(this, type, v);

   886                     break;

   887                 }

   888                 case opc_ldc_w:

   889                 case opc_ldc2_w: {

   890                     int indx = readUShortArg(byteCodes, i);

   891                     i += 2;

   892                     String v = encodeConstant(indx);

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

   894                     if (type == VarType.LONG) {

   895                         final Long lv = new Long(v);

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

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

   898                         if (hi == 0) {

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

   900                         } else {

   901                             smapper.assign(this, VarType.LONG,

   902                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   903                                     Integer.toHexString(low) + ")"

   904                             );

   905                         }

   906                     } else {

   907                         smapper.assign(this, type, v);

   908                     }

   909                     break;

   910                 }

   911                 case opc_lcmp:

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

   913                     break;

   914                 case opc_fcmpl:

   915                 case opc_fcmpg:

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

   917                     break;

   918                 case opc_dcmpl:

   919                 case opc_dcmpg:

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

   921                     break;

   922                 case opc_if_acmpeq:

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

   924                                    "===", topMostLabel);

   925                     break;

   926                 case opc_if_acmpne:

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

   928                                    "!==", topMostLabel);

   929                     break;

   930                 case opc_if_icmpeq:

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

   932                                    "==", topMostLabel);

   933                     break;

   934                 case opc_ifeq: {

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

   936                     emitIf(smapper, this, "if ((@1) == 0) ",

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

   938                     i += 2;

   939                     break;

   940                 }

   941                 case opc_ifne: {

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

   943                     emitIf(smapper, this, "if ((@1) != 0) ",

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

   945                     i += 2;

   946                     break;

   947                 }

   948                 case opc_iflt: {

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

   950                     emitIf(smapper, this, "if ((@1) < 0) ",

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

   952                     i += 2;

   953                     break;

   954                 }

   955                 case opc_ifle: {

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

   957                     emitIf(smapper, this, "if ((@1) <= 0) ",

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

   959                     i += 2;

   960                     break;

   961                 }

   962                 case opc_ifgt: {

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

   964                     emitIf(smapper, this, "if ((@1) > 0) ",

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

   966                     i += 2;

   967                     break;

   968                 }

   969                 case opc_ifge: {

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

   971                     emitIf(smapper, this, "if ((@1) >= 0) ",

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

   973                     i += 2;

   974                     break;

   975                 }

   976                 case opc_ifnonnull: {

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

   978                     emitIf(smapper, this, "if ((@1) !== null) ",

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

   980                     i += 2;

   981                     break;

   982                 }

   983                 case opc_ifnull: {

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

   985                     emitIf(smapper, this, "if ((@1) === null) ",

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

   987                     i += 2;

   988                     break;

   989                 }

   990                 case opc_if_icmpne:

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

   992                                    "!=", topMostLabel);

   993                     break;

   994                 case opc_if_icmplt:

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

   996                                    "<", topMostLabel);

   997                     break;

   998                 case opc_if_icmple:

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

  1000                                    "<=", topMostLabel);

  1001                     break;

  1002                 case opc_if_icmpgt:

  1003                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1004                                    ">", topMostLabel);

  1005                     break;

  1006                 case opc_if_icmpge:

  1007                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1008                                    ">=", topMostLabel);

  1009                     break;

  1010                 case opc_goto: {

  1011                     smapper.flush(this);

  1012                     int indx = i + readShortArg(byteCodes, i);

  1013                     goTo(this, i, indx, topMostLabel);

  1014                     i += 2;

  1015                     break;

  1016                 }

  1017                 case opc_lookupswitch: {

  1018                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1019                     break;

  1020                 }

  1021                 case opc_tableswitch: {

  1022                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1023                     break;

  1024                 }

  1025                 case opc_invokeinterface: {

  1026                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1027                     break;

  1028                 }

  1029                 case opc_invokevirtual:

  1030                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1031                     break;

  1032                 case opc_invokespecial:

  1033                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1034                     break;

  1035                 case opc_invokestatic:

  1036                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1037                     break;

  1038                 case opc_new: {

  1039                     int indx = readUShortArg(byteCodes, i);

  1040                     String ci = jc.getClassName(indx);

  1041                     emit(smapper, this, "var @1 = new @2;",

  1042                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1043                     addReference(ci);

  1044                     i += 2;

  1045                     break;

  1046                 }

  1047                 case opc_newarray:

  1048                     int atype = readUByte(byteCodes, ++i);

  1049                     generateNewArray(atype, smapper);

  1050                     break;

  1051                 case opc_anewarray: {

  1052                     int type = readUShortArg(byteCodes, i);

  1053                     i += 2;

  1054                     generateANewArray(type, smapper);

  1055                     break;

  1056                 }

  1057                 case opc_multianewarray: {

  1058                     int type = readUShortArg(byteCodes, i);

  1059                     i += 2;

  1060                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1061                     break;

  1062                 }

  1063                 case opc_arraylength:

  1064                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1065                     break;

  1066                 case opc_lastore:

  1067                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1068                          smapper.popL(), smapper.popI(), smapper.popA());

  1069                     break;

  1070                 case opc_fastore:

  1071                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1072                          smapper.popF(), smapper.popI(), smapper.popA());

  1073                     break;

  1074                 case opc_dastore:

  1075                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1076                          smapper.popD(), smapper.popI(), smapper.popA());

  1077                     break;

  1078                 case opc_aastore:

  1079                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1080                          smapper.popA(), smapper.popI(), smapper.popA());

  1081                     break;

  1082                 case opc_iastore:

  1083                 case opc_bastore:

  1084                 case opc_castore:

  1085                 case opc_sastore:

  1086                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1087                          smapper.popI(), smapper.popI(), smapper.popA());

  1088                     break;

  1089                 case opc_laload:

  1090                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1091                          smapper.popI(), smapper.getA(0));

  1092                     break;

  1093                 case opc_faload:

  1094                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1095                          smapper.popI(), smapper.getA(0));

  1096                     break;

  1097                 case opc_daload:

  1098                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1099                          smapper.popI(), smapper.getA(0));

  1100                     break;

  1101                 case opc_aaload:

  1102                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1103                          smapper.popI(), smapper.getA(0));

  1104                     break;

  1105                 case opc_iaload:

  1106                 case opc_baload:

  1107                 case opc_caload:

  1108                 case opc_saload:

  1109                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1110                          smapper.popI(), smapper.getA(0));

  1111                     break;

  1112                 case opc_pop:

  1113                 case opc_pop2:

  1114                     smapper.pop(1);

  1115                     debug("/* pop */");

  1116                     break;

  1117                 case opc_dup: {

  1118                     final Variable v = smapper.get(0);

  1119                     emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1120                     break;

  1121                 }

  1122                 case opc_dup2: {

  1123                     final Variable vi1 = smapper.get(0);

  1125                     if (vi1.isCategory2()) {

  1126                         emit(smapper, this, "var @1 = @2;",

  1127                              smapper.pushT(vi1.getType()), vi1);

  1128                     } else {

  1129                         final Variable vi2 = smapper.get(1);

  1130                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1131                              smapper.pushT(vi2.getType()), vi2,

  1132                              smapper.pushT(vi1.getType()), vi1);

  1133                     }

  1134                     break;

  1135                 }

  1136                 case opc_dup_x1: {

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

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

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

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

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

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

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

  1145                     break;

  1146                 }

  1147                 case opc_dup2_x1: {

  1148                     final Variable vi1 = smapper.pop(this);

  1149                     final Variable vi2 = smapper.pop(this);

  1151                     if (vi1.isCategory2()) {

  1152                         final Variable vo3 = smapper.pushT(vi1.getType());

  1153                         final Variable vo2 = smapper.pushT(vi2.getType());

  1154                         final Variable vo1 = smapper.pushT(vi1.getType());

  1156                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1157                              vo1, vi1, vo2, vi2, vo3, vo1);

  1158                     } else {

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

  1160                         final Variable vo5 = smapper.pushT(vi2.getType());

  1161                         final Variable vo4 = smapper.pushT(vi1.getType());

  1162                         final Variable vo3 = smapper.pushT(vi3.getType());

  1163                         final Variable vo2 = smapper.pushT(vi2.getType());

  1164                         final Variable vo1 = smapper.pushT(vi1.getType());

  1166                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1167                              vo1, vi1, vo2, vi2, vo3, vi3);

  1168                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1169                              vo4, vo1, vo5, vo2);

  1170                     }

  1171                     break;

  1172                 }

  1173                 case opc_dup_x2: {

  1174                     final Variable vi1 = smapper.pop(this);

  1175                     final Variable vi2 = smapper.pop(this);

  1177                     if (vi2.isCategory2()) {

  1178                         final Variable vo3 = smapper.pushT(vi1.getType());

  1179                         final Variable vo2 = smapper.pushT(vi2.getType());

  1180                         final Variable vo1 = smapper.pushT(vi1.getType());

  1182                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1183                              vo1, vi1, vo2, vi2, vo3, vo1);

  1184                     } else {

  1185                         final Variable vi3 = smapper.pop(this);

  1186                         final Variable vo4 = smapper.pushT(vi1.getType());

  1187                         final Variable vo3 = smapper.pushT(vi3.getType());

  1188                         final Variable vo2 = smapper.pushT(vi2.getType());

  1189                         final Variable vo1 = smapper.pushT(vi1.getType());

  1191                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1192                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1193                     }

  1194                     break;

  1195                 }

  1196                 case opc_dup2_x2: {

  1197                     final Variable vi1 = smapper.pop(this);

  1198                     final Variable vi2 = smapper.pop(this);

  1200                     if (vi1.isCategory2()) {

  1201                         if (vi2.isCategory2()) {

  1202                             final Variable vo3 = smapper.pushT(vi1.getType());

  1203                             final Variable vo2 = smapper.pushT(vi2.getType());

  1204                             final Variable vo1 = smapper.pushT(vi1.getType());

  1206                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1207                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1208                         } else {

  1209                             final Variable vi3 = smapper.pop(this);

  1210                             final Variable vo4 = smapper.pushT(vi1.getType());

  1211                             final Variable vo3 = smapper.pushT(vi3.getType());

  1212                             final Variable vo2 = smapper.pushT(vi2.getType());

  1213                             final Variable vo1 = smapper.pushT(vi1.getType());

  1215                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1216                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1217                         }

  1218                     } else {

  1219                         final Variable vi3 = smapper.pop(this);

  1221                         if (vi3.isCategory2()) {

  1222                             final Variable vo5 = smapper.pushT(vi2.getType());

  1223                             final Variable vo4 = smapper.pushT(vi1.getType());

  1224                             final Variable vo3 = smapper.pushT(vi3.getType());

  1225                             final Variable vo2 = smapper.pushT(vi2.getType());

  1226                             final Variable vo1 = smapper.pushT(vi1.getType());

  1228                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1229                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1230                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1231                                  vo4, vo1, vo5, vo2);

  1232                         } else {

  1233                             final Variable vi4 = smapper.pop(this);

  1234                             final Variable vo6 = smapper.pushT(vi2.getType());

  1235                             final Variable vo5 = smapper.pushT(vi1.getType());

  1236                             final Variable vo4 = smapper.pushT(vi4.getType());

  1237                             final Variable vo3 = smapper.pushT(vi3.getType());

  1238                             final Variable vo2 = smapper.pushT(vi2.getType());

  1239                             final Variable vo1 = smapper.pushT(vi1.getType());

  1241                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1242                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1243                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1244                                  vo5, vo1, vo6, vo2);

  1245                         }

  1246                     }

  1247                     break;

  1248                 }

  1249                 case opc_swap: {

  1250                     final Variable vi1 = smapper.get(0);

  1251                     final Variable vi2 = smapper.get(1);

  1253                     if (vi1.getType() == vi2.getType()) {

  1254                         final Variable tmp = smapper.pushT(vi1.getType());

  1256                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1257                              tmp, vi1, vi2);

  1258                         smapper.pop(1);

  1259                     } else {

  1260                         smapper.pop(2);

  1261                         smapper.pushT(vi1.getType());

  1262                         smapper.pushT(vi2.getType());

  1263                     }

  1264                     break;

  1265                 }

  1266                 case opc_bipush:

  1267                     smapper.assign(this, VarType.INTEGER,

  1268                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1269                     break;

  1270                 case opc_sipush:

  1271                     smapper.assign(this, VarType.INTEGER,

  1272                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1273                     );

  1274                     i += 2;

  1275                     break;

  1276                 case opc_getfield: {

  1277                     int indx = readUShortArg(byteCodes, i);

  1278                     String[] fi = jc.getFieldInfoName(indx);

  1279                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1280                     final String mangleClass = mangleClassName(fi[0]);

  1281                     final String mangleClassAccess = accessClass(mangleClass);

  1282                     smapper.replace(this, type, "@2.call(@1)",

  1283                          smapper.getA(0),

  1284                          accessField(mangleClassAccess + "(false)",

  1285                                      "_" + fi[1], fi)

  1286                     );

  1287                     i += 2;

  1288                     break;

  1289                 }

  1290                 case opc_putfield: {

  1291                     int indx = readUShortArg(byteCodes, i);

  1292                     String[] fi = jc.getFieldInfoName(indx);

  1293                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1294                     final String mangleClass = mangleClassName(fi[0]);

  1295                     final String mangleClassAccess = accessClass(mangleClass);

  1296                     emit(smapper, this, "@3.call(@2, @1);",

  1297                          smapper.popT(type),

  1298                          smapper.popA(),

  1299                          accessField(mangleClassAccess + "(false)",

  1300                                      "_" + fi[1], fi));

  1301                     i += 2;

  1302                     break;

  1303                 }

  1304                 case opc_getstatic: {

  1305                     int indx = readUShortArg(byteCodes, i);

  1306                     String[] fi = jc.getFieldInfoName(indx);

  1307                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1308                     String ac = accessClass(mangleClassName(fi[0]));

  1309                     smapper.assign(this, type, ac + "(false)._" + fi[1] + "()");

  1310                     i += 2;

  1311                     addReference(fi[0]);

  1312                     break;

  1313                 }

  1314                 case opc_putstatic: {

  1315                     int indx = readUShortArg(byteCodes, i);

  1316                     String[] fi = jc.getFieldInfoName(indx);

  1317                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1318                     emit(smapper, this, "@1(false)._@2(@3);",

  1319                          accessClass(mangleClassName(fi[0])), fi[1],

  1320                          smapper.popT(type));

  1321                     i += 2;

  1322                     addReference(fi[0]);

  1323                     break;

  1324                 }

  1325                 case opc_checkcast: {

  1326                     int indx = readUShortArg(byteCodes, i);

  1327                     generateCheckcast(indx, smapper);

  1328                     i += 2;

  1329                     break;

  1330                 }

  1331                 case opc_instanceof: {

  1332                     int indx = readUShortArg(byteCodes, i);

  1333                     generateInstanceOf(indx, smapper);

  1334                     i += 2;

  1335                     break;

  1336                 }

  1337                 case opc_athrow: {

  1338                     final CharSequence v = smapper.popA();

  1339                     smapper.clear();

  1341                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1342                          smapper.pushA(), v);

  1343                     break;

  1344                 }

  1346                 case opc_monitorenter: {

  1347                     debug("/* monitor enter */");

  1348                     smapper.popA();

  1349                     break;

  1350                 }

  1352                 case opc_monitorexit: {

  1353                     debug("/* monitor exit */");

  1354                     smapper.popA();

  1355                     break;

  1356                 }

  1358                 case opc_wide:

  1359                     wide = true;

  1360                     break;

  1362                 default: {

  1363                     wide = false;

  1364                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1365                          Integer.toString(c));

  1366                 }

  1367             }

  1368             if (debug(" //")) {

  1369                 generateByteCodeComment(prev, i, byteCodes);

  1370             }

  1371             if (outChanged) {

  1372                 append("\n");

  1373             }

  1374         }

  1375         if (previousTrap != null) {

  1376             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1377         }

  1378         if (didBranches) {

  1379             append("\n    }\n");

  1380         }

  1381         while (openBraces-- > 0) {

  1382             append('}');

  1383         }

  1384         append("\n};");

  1385     }

  1387     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1388         int i, final CharSequence v2, final CharSequence v1,

  1389         final String test, int topMostLabel

  1390     ) throws IOException {

  1391         mapper.flush(this);

  1392         int indx = i + readShortArg(byteCodes, i);

  1393         append("if ((").append(v1)

  1394            .append(") ").append(test).append(" (")

  1395            .append(v2).append(")) ");

  1396         goTo(this, i, indx, topMostLabel);

  1397         return i + 2;

  1398     }

  1400     private int readInt4(byte[] byteCodes, int offset) {

  1401         final int d = byteCodes[offset + 0] << 24;

  1402         final int c = byteCodes[offset + 1] << 16;

  1403         final int b = byteCodes[offset + 2] << 8;

  1404         final int a = byteCodes[offset + 3];

  1405         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1406     }

  1407     private static int readUByte(byte[] byteCodes, int offset) {

  1408         return byteCodes[offset] & 0xff;

  1409     }

  1411     private static int readUShort(byte[] byteCodes, int offset) {

  1412         return ((byteCodes[offset] & 0xff) << 8)

  1413                     | (byteCodes[offset + 1] & 0xff);

  1414     }

  1415     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1416         return readUShort(byteCodes, offsetInstruction + 1);

  1417     }

  1419     private static int readShort(byte[] byteCodes, int offset) {

  1420         int signed = byteCodes[offset];

  1421         byte b0 = (byte)signed;

  1422         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1423     }

  1424     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1425         return readShort(byteCodes, offsetInstruction + 1);

  1426     }

  1428     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1429         int i = 0;

  1430         Boolean count = null;

  1431         boolean array = false;

  1432         sig.append("__");

  1433         int firstPos = sig.length();

  1434         while (i < descriptor.length()) {

  1435             char ch = descriptor.charAt(i++);

  1436             switch (ch) {

  1437                 case '(':

  1438                     count = true;

  1439                     continue;

  1440                 case ')':

  1441                     count = false;

  1442                     continue;

  1443                 case 'B':

  1444                 case 'C':

  1445                 case 'D':

  1446                 case 'F':

  1447                 case 'I':

  1448                 case 'J':

  1449                 case 'S':

  1450                 case 'Z':

  1451                     if (count) {

  1452                         if (array) {

  1453                             sig.append("_3");

  1454                         }

  1455                         sig.append(ch);

  1456                         if (ch == 'J' || ch == 'D') {

  1457                             cnt.append('1');

  1458                         } else {

  1459                             cnt.append('0');

  1460                         }

  1461                     } else {

  1462                         sig.insert(firstPos, ch);

  1463                         if (array) {

  1464                             returnType[0] = '[';

  1465                             sig.insert(firstPos, "_3");

  1466                         } else {

  1467                             returnType[0] = ch;

  1468                         }

  1469                     }

  1470                     array = false;

  1471                     continue;

  1472                 case 'V':

  1473                     assert !count;

  1474                     returnType[0] = 'V';

  1475                     sig.insert(firstPos, 'V');

  1476                     continue;

  1477                 case 'L':

  1478                     int next = descriptor.indexOf(';', i);

  1479                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1480                     if (count) {

  1481                         if (array) {

  1482                             sig.append("_3");

  1483                         }

  1484                         sig.append(realSig);

  1485                         cnt.append('0');

  1486                     } else {

  1487                         sig.insert(firstPos, realSig);

  1488                         if (array) {

  1489                             sig.insert(firstPos, "_3");

  1490                         }

  1491                         returnType[0] = 'L';

  1492                     }

  1493                     i = next + 1;

  1494                     array = false;

  1495                     continue;

  1496                 case '[':

  1497                     array = true;

  1498                     continue;

  1499                 default:

  1500                     throw new IllegalStateException("Invalid char: " + ch);

  1501             }

  1502         }

  1503     }

  1505     static String mangleSig(String sig) {

  1506         return mangleSig(sig, 0, sig.length());

  1507     }

  1509     private static String mangleMethodName(String name) {

  1510         StringBuilder sb = new StringBuilder(name.length() * 2);

  1511         int last = name.length();

  1512         for (int i = 0; i < last; i++) {

  1513             final char ch = name.charAt(i);

  1514             switch (ch) {

  1515                 case '_': sb.append("_1"); break;

  1516                 default: sb.append(ch); break;

  1517             }

  1518         }

  1519         return sb.toString();

  1520     }

  1521     private static String mangleSig(String txt, int first, int last) {

  1522         StringBuilder sb = new StringBuilder((last - first) * 2);

  1523         for (int i = first; i < last; i++) {

  1524             final char ch = txt.charAt(i);

  1525             switch (ch) {

  1526                 case '/': sb.append('_'); break;

  1527                 case '_': sb.append("_1"); break;

  1528                 case ';': sb.append("_2"); break;

  1529                 case '[': sb.append("_3"); break;

  1530                 default: sb.append(ch); break;

  1531             }

  1532         }

  1533         return sb.toString();

  1534     }

  1536     private static String mangleClassName(String name) {

  1537         return mangleSig(name);

  1538     }

  1540     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1541         StringBuilder name = new StringBuilder();

  1542         if ("<init>".equals(m.getName())) { // NOI18N

  1543             name.append("cons"); // NOI18N

  1544         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1545             name.append("class"); // NOI18N

  1546         } else {

  1547             name.append(mangleMethodName(m.getName()));

  1548         }

  1550         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1551         return name.toString();

  1552     }

  1554     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1555         StringBuilder name = new StringBuilder();

  1556         String descr = mi[2];//mi.getDescriptor();

  1557         String nm= mi[1];

  1558         if ("<init>".equals(nm)) { // NOI18N

  1559             name.append("cons"); // NOI18N

  1560         } else {

  1561             name.append(mangleMethodName(nm));

  1562         }

  1563         countArgs(descr, returnType, name, cnt);

  1564         return name.toString();

  1565     }

  1567     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1568     throws IOException {

  1569         int methodIndex = readUShortArg(byteCodes, i);

  1570         String[] mi = jc.getFieldInfoName(methodIndex);

  1571         char[] returnType = { 'V' };

  1572         StringBuilder cnt = new StringBuilder();

  1573         String mn = findMethodName(mi, cnt, returnType);

  1575         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1576         final CharSequence[] vars = new CharSequence[numArguments];

  1578         for (int j = numArguments - 1; j >= 0; --j) {

  1579             vars[j] = mapper.popValue();

  1580         }

  1582         if (returnType[0] != 'V') {

  1583             append("var ")

  1584                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1585                .append(" = ");

  1586         }

  1588         final String in = mi[0];

  1589         String object = accessClass(mangleClassName(in)) + "(false)";

  1590         if (mn.startsWith("cons_")) {

  1591             object += ".constructor";

  1592         }

  1593         append(accessStaticMethod(object, mn, mi));

  1594         if (isStatic) {

  1595             append('(');

  1596         } else {

  1597             append(".call(");

  1598         }

  1599         if (numArguments > 0) {

  1600             append(vars[0]);

  1601             for (int j = 1; j < numArguments; ++j) {

  1602                 append(", ");

  1603                 append(vars[j]);

  1604             }

  1605         }

  1606         append(");");

  1607         i += 2;

  1608         addReference(in);

  1609         return i;

  1610     }

  1611     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1612     throws IOException {

  1613         int methodIndex = readUShortArg(byteCodes, i);

  1614         String[] mi = jc.getFieldInfoName(methodIndex);

  1615         char[] returnType = { 'V' };

  1616         StringBuilder cnt = new StringBuilder();

  1617         String mn = findMethodName(mi, cnt, returnType);

  1619         final int numArguments = cnt.length() + 1;

  1620         final CharSequence[] vars = new CharSequence[numArguments];

  1622         for (int j = numArguments - 1; j >= 0; --j) {

  1623             vars[j] = mapper.popValue();

  1624         }

  1626         if (returnType[0] != 'V') {

  1627             append("var ")

  1628                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1629                .append(" = ");

  1630         }

  1632         append(accessVirtualMethod(vars[0].toString(), mn, mi));

  1633         append('(');

  1634         String sep = "";

  1635         for (int j = 1; j < numArguments; ++j) {

  1636             append(sep);

  1637             append(vars[j]);

  1638             sep = ", ";

  1639         }

  1640         append(");");

  1641         i += 2;

  1642         return i;

  1643     }

  1645     private void addReference(String cn) throws IOException {

  1646         if (requireReference(cn)) {

  1647             debug(" /* needs " + cn + " */");

  1648         }

  1649     }

  1651     private void outType(String d, StringBuilder out) {

  1652         int arr = 0;

  1653         while (d.charAt(0) == '[') {

  1654             out.append('A');

  1655             d = d.substring(1);

  1656         }

  1657         if (d.charAt(0) == 'L') {

  1658             assert d.charAt(d.length() - 1) == ';';

  1659             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1660         } else {

  1661             out.append(d);

  1662         }

  1663     }

  1665     private String encodeConstant(int entryIndex) throws IOException {

  1666         String[] classRef = { null };

  1667         String s = jc.stringValue(entryIndex, classRef);

  1668         if (classRef[0] != null) {

  1669             if (classRef[0].startsWith("[")) {

  1670                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1671             } else {

  1672                 addReference(classRef[0]);

  1673                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1674             }

  1675         }

  1676         return s;

  1677     }

  1679     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1680         byte[] arr = m.findAnnotationData(true);

  1681         if (arr == null) {

  1682             return null;

  1683         }

  1684         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1685         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1686         class P extends AnnotationParser {

  1687             public P() {

  1688                 super(false, true);

  1689             }

  1691             int cnt;

  1692             String[] args = new String[30];

  1693             String body;

  1694             boolean javacall;

  1695             boolean html4j;

  1697             @Override

  1698             protected void visitAttr(String type, String attr, String at, String value) {

  1699                 if (type.equals(jvmType)) {

  1700                     if ("body".equals(attr)) {

  1701                         body = value;

  1702                     } else if ("args".equals(attr)) {

  1703                         args[cnt++] = value;

  1704                     } else {

  1705                         throw new IllegalArgumentException(attr);

  1706                     }

  1707                 }

  1708                 if (type.equals(htmlType)) {

  1709                     html4j = true;

  1710                     if ("body".equals(attr)) {

  1711                         body = value;

  1712                     } else if ("args".equals(attr)) {

  1713                         args[cnt++] = value;

  1714                     } else if ("javacall".equals(attr)) {

  1715                         javacall = "1".equals(value);

  1716                     } else {

  1717                         throw new IllegalArgumentException(attr);

  1718                     }

  1719                 }

  1720             }

  1721         }

  1722         P p = new P();

  1723         p.parse(arr, jc);

  1724         if (p.body == null) {

  1725             return null;

  1726         }

  1727         StringBuilder cnt = new StringBuilder();

  1728         final String mn = findMethodName(m, cnt);

  1729         append(destObject).append(".").append(mn);

  1730         append(" = function(");

  1731         String space = "";

  1732         int index = 0;

  1733         StringBuilder toValue = new StringBuilder();

  1734         for (int i = 0; i < cnt.length(); i++) {

  1735             append(space);

  1736             space = outputArg(this, p.args, index);

  1737             if (p.html4j && space.length() > 0) {

  1738                 toValue.append("\n  ").append(p.args[index]).append(" = vm.org_apidesign_bck2brwsr_emul_lang_System(false).toJS(").

  1739                     append(p.args[index]).append(");");

  1740             }

  1741             index++;

  1742         }

  1743         append(") {").append("\n");

  1744         append(toValue.toString());

  1745         if (p.javacall) {

  1746             int lastSlash = jc.getClassName().lastIndexOf('/');

  1747             final String pkg = jc.getClassName().substring(0, lastSlash);

  1748             append(mangleCallbacks(pkg, p.body));

  1749             requireReference(pkg + "/$JsCallbacks$");

  1750         } else {

  1751             append(p.body);

  1752         }

  1753         append("\n}\n");

  1754         return mn;

  1755     }

  1757     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1758         StringBuilder sb = new StringBuilder();

  1759         int pos = 0;

  1760         for (;;) {

  1761             int next = body.indexOf(".@", pos);

  1762             if (next == -1) {

  1763                 sb.append(body.substring(pos));

  1764                 body = sb.toString();

  1765                 break;

  1766             }

  1767             int ident = next;

  1768             while (ident > 0) {

  1769                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1770                     ident++;

  1771                     break;

  1772                 }

  1773             }

  1774             String refId = body.substring(ident, next);

  1776             sb.append(body.substring(pos, ident));

  1778             int sigBeg = body.indexOf('(', next);

  1779             int sigEnd = body.indexOf(')', sigBeg);

  1780             int colon4 = body.indexOf("::", next);

  1781             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1782                 throw new IllegalStateException("Malformed body " + body);

  1783             }

  1784             String fqn = body.substring(next + 2, colon4);

  1785             String method = body.substring(colon4 + 2, sigBeg);

  1786             String params = body.substring(sigBeg, sigEnd + 1);

  1788             int paramBeg = body.indexOf('(', sigEnd + 1);

  1790             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1791             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1792             sb.append("(").append(refId);

  1793             if (body.charAt(paramBeg + 1) != ')') {

  1794                 sb.append(",");

  1795             }

  1796             pos = paramBeg + 1;

  1797         }

  1798         sb = null;

  1799         pos = 0;

  1800         for (;;) {

  1801             int next = body.indexOf("@", pos);

  1802             if (next == -1) {

  1803                 if (sb == null) {

  1804                     return body;

  1805                 }

  1806                 sb.append(body.substring(pos));

  1807                 return sb;

  1808             }

  1809             if (sb == null) {

  1810                 sb = new StringBuilder();

  1811             }

  1813             sb.append(body.substring(pos, next));

  1815             int sigBeg = body.indexOf('(', next);

  1816             int sigEnd = body.indexOf(')', sigBeg);

  1817             int colon4 = body.indexOf("::", next);

  1818             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1819                 throw new IllegalStateException("Malformed body " + body);

  1820             }

  1821             String fqn = body.substring(next + 1, colon4);

  1822             String method = body.substring(colon4 + 2, sigBeg);

  1823             String params = body.substring(sigBeg, sigEnd + 1);

  1825             int paramBeg = body.indexOf('(', sigEnd + 1);

  1827             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1828             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1829             sb.append("(");

  1830             pos = paramBeg + 1;

  1831         }

  1832     }

  1834     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1835         if (params.startsWith("(")) {

  1836             params = params.substring(1);

  1837         }

  1838         if (params.endsWith(")")) {

  1839             params = params.substring(0, params.length() - 1);

  1840         }

  1841         StringBuilder sb = new StringBuilder();

  1842         final String fqnu = fqn.replace('.', '_');

  1843         final String rfqn = mangleClassName(fqnu);

  1844         final String rm = mangleMethodName(method);

  1845         final String srp;

  1846         {

  1847             StringBuilder pb = new StringBuilder();

  1848             int len = params.length();

  1849             int indx = 0;

  1850             while (indx < len) {

  1851                 char ch = params.charAt(indx);

  1852                 if (ch == '[' || ch == 'L') {

  1853                     pb.append("Ljava/lang/Object;");

  1854                     indx = params.indexOf(';', indx) + 1;

  1855                 } else {

  1856                     pb.append(ch);

  1857                     indx++;

  1858                 }

  1859             }

  1860             srp = mangleSig(pb.toString());

  1861         }

  1862         final String rp = mangleSig(params);

  1863         final String mrp = mangleMethodName(rp);

  1864         sb.append(rfqn).append("$").append(rm).

  1865             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1866         if (!isStatic) {

  1867             sb.append('L').append(fqnu).append("_2");

  1868         }

  1869         sb.append(srp);

  1870         return sb.toString();

  1871     }

  1873     private static String className(ClassData jc) {

  1874         //return jc.getName().getInternalName().replace('/', '_');

  1875         return mangleClassName(jc.getClassName());

  1876     }

  1878     private static String[] findAnnotation(

  1879         byte[] arr, ClassData cd, final String className,

  1880         final String... attrNames

  1881     ) throws IOException {

  1882         if (arr == null) {

  1883             return null;

  1884         }

  1885         final String[] values = new String[attrNames.length];

  1886         final boolean[] found = { false };

  1887         final String jvmType = "L" + className.replace('.', '/') + ";";

  1888         AnnotationParser ap = new AnnotationParser(false, true) {

  1889             @Override

  1890             protected void visitAttr(String type, String attr, String at, String value) {

  1891                 if (type.equals(jvmType)) {

  1892                     found[0] = true;

  1893                     for (int i = 0; i < attrNames.length; i++) {

  1894                         if (attrNames[i].equals(attr)) {

  1895                             values[i] = value;

  1896                         }

  1897                     }

  1898                 }

  1899             }

  1901         };

  1902         ap.parse(arr, cd);

  1903         return found[0] ? values : null;

  1904     }

  1906     private CharSequence initField(FieldData v) {

  1907         final String is = v.getInternalSig();

  1908         if (is.length() == 1) {

  1909             switch (is.charAt(0)) {

  1910                 case 'S':

  1911                 case 'J':

  1912                 case 'B':

  1913                 case 'Z':

  1914                 case 'C':

  1915                 case 'I': return " = 0;";

  1916                 case 'F':

  1917                 case 'D': return " = 0.0;";

  1918                 default:

  1919                     throw new IllegalStateException(is);

  1920             }

  1921         }

  1922         return " = null;";

  1923     }

  1925     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  1926         AnnotationParser ap = new AnnotationParser(true, false) {

  1927             int[] cnt = new int[32];

  1928             int depth;

  1930             @Override

  1931             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1932                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1933                 requireReference(slashType);

  1935                 if (cnt[depth]++ > 0) {

  1936                     append(",");

  1937                 }

  1938                 if (top) {

  1939                     append('"').append(attrType).append("\" : ");

  1940                 }

  1941                 append("{\n");

  1942                 cnt[++depth] = 0;

  1943             }

  1945             @Override

  1946             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1947                 append("\n}\n");

  1948                 depth--;

  1949             }

  1951             @Override

  1952             protected void visitValueStart(String attrName, char type) throws IOException {

  1953                 if (cnt[depth]++ > 0) {

  1954                     append(",\n");

  1955                 }

  1956                 cnt[++depth] = 0;

  1957                 if (attrName != null) {

  1958                     append(attrName).append(" : ");

  1959                 }

  1960                 if (type == '[') {

  1961                     append("[");

  1962                 }

  1963             }

  1965             @Override

  1966             protected void visitValueEnd(String attrName, char type) throws IOException {

  1967                 if (type == '[') {

  1968                     append("]");

  1969                 }

  1970                 depth--;

  1971             }

  1973             @Override

  1974             protected void visitAttr(String type, String attr, String attrType, String value)

  1975             throws IOException {

  1976                 if (attr == null && value == null) {

  1977                     return;

  1978                 }

  1979                 append(value);

  1980             }

  1982             @Override

  1983             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1984             throws IOException {

  1985                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1986                 requireReference(slashType);

  1988                 append(accessClass(mangleClassName(slashType)))

  1989                    .append("(false).constructor.fld_").append(value);

  1990             }

  1991         };

  1992         ap.parse(data, cd);

  1993     }

  1995     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1996         final String name = args[indx];

  1997         if (name == null) {

  1998             return "";

  1999         }

  2000         if (name.contains(",")) {

  2001             throw new IOException("Wrong parameter with ',': " + name);

  2002         }

  2003         out.append(name);

  2004         return ",";

  2005     }

  2007     final void emitNoFlush(

  2008         StackMapper sm,

  2009         final String format, final CharSequence... params

  2010     ) throws IOException {

  2011         emitImpl(this, format, params);

  2012     }

  2013     static final void emit(

  2014         StackMapper sm,

  2015         final Appendable out,

  2016         final String format, final CharSequence... params

  2017     ) throws IOException {

  2018         sm.flush(out);

  2019         emitImpl(out, format, params);

  2020     }

  2021     static void emitImpl(final Appendable out,

  2022                              final String format,

  2023                              final CharSequence... params) throws IOException {

  2024         final int length = format.length();

  2026         int processed = 0;

  2027         int paramOffset = format.indexOf('@');

  2028         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2029             final char paramChar = format.charAt(paramOffset + 1);

  2030             if ((paramChar >= '1') && (paramChar <= '9')) {

  2031                 final int paramIndex = paramChar - '0' - 1;

  2033                 out.append(format, processed, paramOffset);

  2034                 out.append(params[paramIndex]);

  2036                 ++paramOffset;

  2037                 processed = paramOffset + 1;

  2038             }

  2040             paramOffset = format.indexOf('@', paramOffset + 1);

  2041         }

  2043         out.append(format, processed, length);

  2044     }

  2046     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2047         append("} catch (e) {\n");

  2048         int finallyPC = -1;

  2049         for (TrapData e : traps) {

  2050             if (e == null) {

  2051                 break;

  2052             }

  2053             if (e.catch_cpx != 0) { //not finally

  2054                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2055                 addReference(classInternalName);

  2056                 append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  2057                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2058                 append("var stA0 = e;");

  2059                 goTo(this, current, e.handler_pc, topMostLabel);

  2060                 append("}\n");

  2061             } else {

  2062                 finallyPC = e.handler_pc;

  2063             }

  2064         }

  2065         if (finallyPC == -1) {

  2066             append("throw e;");

  2067         } else {

  2068             append("var stA0 = e;");

  2069             goTo(this, current, finallyPC, topMostLabel);

  2070         }

  2071         append("\n}");

  2072     }

  2074     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2075         if (to < current) {

  2076             if (canBack < to) {

  2077                 out.append("{ gt = 0; continue X_" + to + "; }");

  2078             } else {

  2079                 out.append("{ gt = " + to + "; continue X_0; }");

  2080             }

  2081         } else {

  2082             out.append("{ gt = " + to + "; break IF; }");

  2083         }

  2084     }

  2086     private static void emitIf(

  2087         StackMapper sm,

  2088         Appendable out, String pattern,

  2089         CharSequence param,

  2090         int current, int to, int canBack

  2091     ) throws IOException {

  2092         sm.flush(out);

  2093         emitImpl(out, pattern, param);

  2094         goTo(out, current, to, canBack);

  2095     }

  2097     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2098         String jvmType;

  2099         switch (atype) {

  2100             case 4: jvmType = "[Z"; break;

  2101             case 5: jvmType = "[C"; break;

  2102             case 6: jvmType = "[F"; break;

  2103             case 7: jvmType = "[D"; break;

  2104             case 8: jvmType = "[B"; break;

  2105             case 9: jvmType = "[S"; break;

  2106             case 10: jvmType = "[I"; break;

  2107             case 11: jvmType = "[J"; break;

  2108             default: throw new IllegalStateException("Array type: " + atype);

  2109         }

  2110         emit(smapper, this,

  2111             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2I'](true, '@3', @1);",

  2112              smapper.popI(), smapper.pushA(), jvmType);

  2113     }

  2115     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2116         String typeName = jc.getClassName(type);

  2117         if (typeName.startsWith("[")) {

  2118             typeName = "[" + typeName;

  2119         } else {

  2120             typeName = "[L" + typeName + ";";

  2121         }

  2122         emit(smapper, this,

  2123             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2I'](false, '@3', @1);",

  2124              smapper.popI(), smapper.pushA(), typeName);

  2125     }

  2127     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2128         String typeName = jc.getClassName(type);

  2129         int dim = readUByte(byteCodes, ++i);

  2130         StringBuilder dims = new StringBuilder();

  2131         dims.append('[');

  2132         for (int d = 0; d < dim; d++) {

  2133             if (d != 0) {

  2134                 dims.insert(1, ",");

  2135             }

  2136             dims.insert(1, smapper.popI());

  2137         }

  2138         dims.append(']');

  2139         emit(smapper, this,

  2140             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II']('@3', @1, 0);",

  2141              dims.toString(), smapper.pushA(), typeName);

  2142         return i;

  2143     }

  2145     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2146         int table = i / 4 * 4 + 4;

  2147         int dflt = i + readInt4(byteCodes, table);

  2148         table += 4;

  2149         int low = readInt4(byteCodes, table);

  2150         table += 4;

  2151         int high = readInt4(byteCodes, table);

  2152         table += 4;

  2153         final CharSequence swVar = smapper.popValue();

  2154         smapper.flush(this);

  2155         append("switch (").append(swVar).append(") {\n");

  2156         while (low <= high) {

  2157             int offset = i + readInt4(byteCodes, table);

  2158             table += 4;

  2159             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2160             low++;

  2161         }

  2162         append("  default: ");

  2163         goTo(this, i, dflt, topMostLabel);

  2164         append("\n}");

  2165         i = table - 1;

  2166         return i;

  2167     }

  2169     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2170         int table = i / 4 * 4 + 4;

  2171         int dflt = i + readInt4(byteCodes, table);

  2172         table += 4;

  2173         int n = readInt4(byteCodes, table);

  2174         table += 4;

  2175         final CharSequence swVar = smapper.popValue();

  2176         smapper.flush(this);

  2177         append("switch (").append(swVar).append(") {\n");

  2178         while (n-- > 0) {

  2179             int cnstnt = readInt4(byteCodes, table);

  2180             table += 4;

  2181             int offset = i + readInt4(byteCodes, table);

  2182             table += 4;

  2183             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2184         }

  2185         append("  default: ");

  2186         goTo(this, i, dflt, topMostLabel);

  2187         append("\n}");

  2188         i = table - 1;

  2189         return i;

  2190     }

  2192     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2193         final String type = jc.getClassName(indx);

  2194         if (!type.startsWith("[")) {

  2195             emit(smapper, this,

  2196                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2197                  smapper.popA(), smapper.pushI(),

  2198                  type.replace('/', '_'));

  2199         } else {

  2200             emit(smapper, this,

  2201                 "var @2 = vm.java_lang_Class(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('@3')['isInstance__ZLjava_lang_Object_2'](@1);",

  2202                 smapper.popA(), smapper.pushI(),

  2203                 type

  2204             );

  2205         }

  2206     }

  2208     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2209         final String type = jc.getClassName(indx);

  2210         if (!type.startsWith("[")) {

  2211             emitNoFlush(smapper,

  2212                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2213                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2214         } else {

  2215             emitNoFlush(smapper,

  2216                 "vm.java_lang_Class(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('@2')['cast__Ljava_lang_Object_2Ljava_lang_Object_2'](@1);",

  2217                  smapper.getT(0, VarType.REFERENCE, false), type

  2218             );

  2219         }

  2220     }

  2222     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2223         for (int j = prev; j <= i; j++) {

  2224             append(" ");

  2225             final int cc = readUByte(byteCodes, j);

  2226             append(Integer.toString(cc));

  2227         }

  2228     }

  2229 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Wed, 30 Apr 2014 15:57:56 +0200
branch	closure
changeset 1514	d2401e2648af
parent 1513	ba912ef24b27
child 1515	d6d1fc565854
permissions	-rw-r--r--