hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@0c5a8b83182a

     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 java.util.Locale;

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

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

    26  *

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

    28  */

    29 abstract class ByteCodeToJavaScript implements Appendable {

    30     private ClassData jc;

    31     private final Appendable out;

    32     private boolean outChanged;

    33     private boolean callbacks;

    35     protected ByteCodeToJavaScript(Appendable out) {

    36         this.out = out;

    37     }

    39     @Override

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

    41         out.append(csq);

    42         outChanged = true;

    43         return this;

    44     }

    46     @Override

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

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

    49         outChanged = true;

    50         return this;

    51     }

    53     @Override

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

    55         out.append(c);

    56         outChanged = true;

    57         return this;

    58     }

    60     /* Collects additional required resources.

    61      *

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

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

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

    65      */

    66     protected abstract boolean requireReference(String internalClassName);

    68     /*

    69      * @param resourcePath name of resources to read

    70      */

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

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

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

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

    76      *

    77      * @param className suggested name of the class

    78      */

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

    80         return className + " = ";

    81     }

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

    83         return classOperation;

    84     }

    86     protected String accessField(String object, String mangledName,

    87                                  String[] fieldInfoName) throws IOException {

    88         return object + "." + mangledName;

    89     }

    91     protected String accessStaticMethod(

    92                              String object,

    93                              String mangledName,

    94                              String[] fieldInfoName) throws IOException {

    95         return object + "." + mangledName;

    96     }

    98     protected String accessVirtualMethod(

    99                              String object,

   100                              String mangledName,

   101                              String[] fieldInfoName) throws IOException {

   102         return object + "." + mangledName;

   103     }

   105     protected void declaredClass(ClassData classData, String mangledName)

   106             throws IOException {

   107     }

   109     protected void declaredField(FieldData fieldData,

   110                                  String destObject,

   111                                  String mangledName) throws IOException {

   112     }

   114     protected void declaredMethod(MethodData methodData,

   115                                   String destObject,

   116                                   String mangledName) throws IOException {

   117     }

   119     /** Prints out a debug message.

   120      *

   121      * @param msg the message

   122      * @return true if the message has been printed

   123      * @throws IOException

   124      */

   125     boolean debug(String msg) throws IOException {

   126         append(msg);

   127         return true;

   128     }

   130     /**

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

   132      *

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

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

   135      *

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

   137      */

   139     public String compile(InputStream classFile) throws IOException {

   140         return compile(new ClassData(classFile));

   141     }

   143     protected String compile(ClassData classData) throws IOException {

   144         this.jc = classData;

   145         this.callbacks = this.jc.getClassName().endsWith("/$JsCallbacks$");

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

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

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

   149             );

   150         }

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

   152         {

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

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

   155                 "resource", "processByteCode"

   156             );

   157             if (arr != null) {

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

   159                     requireScript(arr[0]);

   160                 }

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

   162                     return null;

   163                 }

   164             }

   165         }

   166         {

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

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

   169                 "value"

   170             );

   171             if (arr != null) {

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

   173                     requireScript(arr[0]);

   174                 } else {

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

   176                     requireScript(

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

   178                     );

   179                 }

   180             }

   181         }

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

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

   184             "container", "prototype"

   185         );

   186         StringArray toInitilize = new StringArray();

   187         final String className = className(jc);

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

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

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

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

   192         if (proto == null) {

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

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

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

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

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

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

   199         } else {

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

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

   202                 proto[0] = "p";

   203             }

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

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

   206         }

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

   208             if (v.isStatic()) {

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

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

   211                         continue;

   212                     }

   213                 }

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

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

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

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

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

   219             } else {

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

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

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

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

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

   225                    .append("; };");

   226             }

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

   229         }

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

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

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

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

   234                 "name", "value"

   235             );

   236             if (only != null) {

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

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

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

   240                 }

   241                 continue;

   242             }

   243             String destObject;

   244             String mn;

   245             append("\n    ");

   246             if (m.isStatic()) {

   247                 destObject = "c";

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

   249             } else {

   250                 if (m.isConstructor()) {

   251                     destObject = "CLS";

   252                     mn = generateInstanceMethod(destObject, m);

   253                 } else {

   254                     destObject = "c";

   255                     mn = generateInstanceMethod(destObject, m);

   256                 }

   257             }

   258             declaredMethod(m, destObject, mn);

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

   260             if (runAnno != null) {

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

   262                 generateAnno(jc, runAnno);

   263                 append("\n    };");

   264             }

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

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

   267         }

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

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

   270         String instOfName = "$instOf_" + className;

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

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

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

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

   275             requireReference(superInterface);

   276         }

   277         append("\n    }");

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

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

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

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

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

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

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

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

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

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

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

   289         if (classAnno != null) {

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

   291             generateAnno(jc, classAnno);

   292             append("\n    };");

   293         }

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

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

   296         }

   297         append("\n  }");

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

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

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

   301         append("\n    }");

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

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

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

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

   306                 "name", "value"

   307             );

   308             if (only != null) {

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

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

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

   312                 }

   313                 continue;

   314             }

   315             if (!v.isStatic()) {

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

   317                     append(className).append('_').

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

   319             }

   320         }

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

   322         append("\n  }");

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

   324         append("\n};");

   326         declaredClass(jc, className);

   328 //        StringBuilder sb = new StringBuilder();

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

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

   331 //        }

   332         return "";

   333     }

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

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

   336         if (jsb != null) {

   337             return jsb;

   338         }

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

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

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

   342         }

   343         generateMethod(destObject, mn, m);

   344         return mn;

   345     }

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

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

   349         if (jsb != null) {

   350             return jsb;

   351         }

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

   353         generateMethod(destObject, mn, m);

   354         return mn;

   355     }

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

   358             throws IOException {

   359         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   360         TrapDataIterator trap = m.getTrapDataIterator();

   361         final LocalsMapper lmapper =

   362                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   369         if (byteCodes == null) {

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

   371                .append(jc.getClassName()).append('.')

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

   373             append("};");

   374             return;

   375         }

   377         final StackMapper smapper = new StackMapper();

   379         if (!m.isStatic()) {

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

   381         }

   383         int lastStackFrame;

   384         TrapData[] previousTrap = null;

   385         boolean wide = false;

   386         boolean didBranches;

   387         if (stackMapIterator.isEmpty()) {

   388             didBranches = false;

   389             lastStackFrame = 0;

   390         } else {

   391             didBranches = true;

   392             lastStackFrame = -1;

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

   394         }

   396         int openBraces = 0;

   397         int topMostLabel = 0;

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

   399             int prev = i;

   400             outChanged = false;

   401             stackMapIterator.advanceTo(i);

   402             boolean changeInCatch = trap.advanceTo(i);

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

   404                 if (previousTrap != null) {

   405                     generateCatch(previousTrap, i, topMostLabel);

   406                     previousTrap = null;

   407                 }

   408             }

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

   410                 smapper.flush(this);

   411                 if (i != 0) {

   412                     append("    }\n");

   413                 }

   414                 if (openBraces > 64) {

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

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

   417                     }

   418                     openBraces = 1;

   419                     topMostLabel = i;

   420                 }

   422                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   426                 openBraces++;

   427                 changeInCatch = true;

   428             } else {

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

   430             }

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

   432                 append("try {");

   433                 previousTrap = trap.current();

   434             }

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

   436             switch (c) {

   437                 case opc_aload_0:

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

   439                     break;

   440                 case opc_iload_0:

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

   442                     break;

   443                 case opc_lload_0:

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

   445                     break;

   446                 case opc_fload_0:

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

   448                     break;

   449                 case opc_dload_0:

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

   451                     break;

   452                 case opc_aload_1:

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

   454                     break;

   455                 case opc_iload_1:

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

   457                     break;

   458                 case opc_lload_1:

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

   460                     break;

   461                 case opc_fload_1:

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

   463                     break;

   464                 case opc_dload_1:

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

   466                     break;

   467                 case opc_aload_2:

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

   469                     break;

   470                 case opc_iload_2:

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

   472                     break;

   473                 case opc_lload_2:

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

   475                     break;

   476                 case opc_fload_2:

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

   478                     break;

   479                 case opc_dload_2:

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

   481                     break;

   482                 case opc_aload_3:

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

   484                     break;

   485                 case opc_iload_3:

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

   487                     break;

   488                 case opc_lload_3:

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

   490                     break;

   491                 case opc_fload_3:

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

   493                     break;

   494                 case opc_dload_3:

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

   496                     break;

   497                 case opc_iload: {

   498                     ++i;

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

   500                                           : readUByte(byteCodes, i);

   501                     wide = false;

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

   503                     break;

   504                 }

   505                 case opc_lload: {

   506                     ++i;

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

   508                                           : readUByte(byteCodes, i);

   509                     wide = false;

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

   511                     break;

   512                 }

   513                 case opc_fload: {

   514                     ++i;

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

   516                                           : readUByte(byteCodes, i);

   517                     wide = false;

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

   519                     break;

   520                 }

   521                 case opc_dload: {

   522                     ++i;

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

   524                                           : readUByte(byteCodes, i);

   525                     wide = false;

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

   527                     break;

   528                 }

   529                 case opc_aload: {

   530                     ++i;

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

   532                                           : readUByte(byteCodes, i);

   533                     wide = false;

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

   535                     break;

   536                 }

   537                 case opc_istore: {

   538                     ++i;

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

   540                                           : readUByte(byteCodes, i);

   541                     wide = false;

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

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

   544                     break;

   545                 }

   546                 case opc_lstore: {

   547                     ++i;

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

   549                                           : readUByte(byteCodes, i);

   550                     wide = false;

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

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

   553                     break;

   554                 }

   555                 case opc_fstore: {

   556                     ++i;

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

   558                                           : readUByte(byteCodes, i);

   559                     wide = false;

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

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

   562                     break;

   563                 }

   564                 case opc_dstore: {

   565                     ++i;

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

   567                                           : readUByte(byteCodes, i);

   568                     wide = false;

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

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

   571                     break;

   572                 }

   573                 case opc_astore: {

   574                     ++i;

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

   576                                           : readUByte(byteCodes, i);

   577                     wide = false;

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

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

   580                     break;

   581                 }

   582                 case opc_astore_0:

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

   584                     break;

   585                 case opc_istore_0:

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

   587                     break;

   588                 case opc_lstore_0:

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

   590                     break;

   591                 case opc_fstore_0:

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

   593                     break;

   594                 case opc_dstore_0:

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

   596                     break;

   597                 case opc_astore_1:

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

   599                     break;

   600                 case opc_istore_1:

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

   602                     break;

   603                 case opc_lstore_1:

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

   605                     break;

   606                 case opc_fstore_1:

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

   608                     break;

   609                 case opc_dstore_1:

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

   611                     break;

   612                 case opc_astore_2:

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

   614                     break;

   615                 case opc_istore_2:

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

   617                     break;

   618                 case opc_lstore_2:

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

   620                     break;

   621                 case opc_fstore_2:

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

   623                     break;

   624                 case opc_dstore_2:

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

   626                     break;

   627                 case opc_astore_3:

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

   629                     break;

   630                 case opc_istore_3:

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

   632                     break;

   633                 case opc_lstore_3:

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

   635                     break;

   636                 case opc_fstore_3:

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

   638                     break;

   639                 case opc_dstore_3:

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

   641                     break;

   642                 case opc_iadd:

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

   644                     break;

   645                 case opc_ladd:

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

   647                     break;

   648                 case opc_fadd:

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

   650                     break;

   651                 case opc_dadd:

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

   653                     break;

   654                 case opc_isub:

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

   656                     break;

   657                 case opc_lsub:

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

   659                     break;

   660                 case opc_fsub:

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

   662                     break;

   663                 case opc_dsub:

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

   665                     break;

   666                 case opc_imul:

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

   668                     break;

   669                 case opc_lmul:

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

   671                     break;

   672                 case opc_fmul:

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

   674                     break;

   675                 case opc_dmul:

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

   677                     break;

   678                 case opc_idiv:

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

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

   681                     break;

   682                 case opc_ldiv:

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

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

   685                     break;

   686                 case opc_fdiv:

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

   688                     break;

   689                 case opc_ddiv:

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

   691                     break;

   692                 case opc_irem:

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

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

   695                     break;

   696                 case opc_lrem:

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

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

   699                     break;

   700                 case opc_frem:

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

   702                     break;

   703                 case opc_drem:

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

   705                     break;

   706                 case opc_iand:

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

   708                     break;

   709                 case opc_land:

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

   711                     break;

   712                 case opc_ior:

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

   714                     break;

   715                 case opc_lor:

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

   717                     break;

   718                 case opc_ixor:

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

   720                     break;

   721                 case opc_lxor:

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

   723                     break;

   724                 case opc_ineg:

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

   726                     break;

   727                 case opc_lneg:

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

   729                     break;

   730                 case opc_fneg:

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

   732                     break;

   733                 case opc_dneg:

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

   735                     break;

   736                 case opc_ishl:

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

   738                     break;

   739                 case opc_lshl:

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

   741                     break;

   742                 case opc_ishr:

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

   744                     break;

   745                 case opc_lshr:

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

   747                     break;

   748                 case opc_iushr:

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

   750                     break;

   751                 case opc_lushr:

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

   753                     break;

   754                 case opc_iinc: {

   755                     ++i;

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

   757                                              : readUByte(byteCodes, i);

   758                     ++i;

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

   760                                             : byteCodes[i];

   761                     wide = false;

   762                     if (incrBy == 1) {

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

   764                     } else {

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

   766                              lmapper.getI(varIndx),

   767                              Integer.toString(incrBy));

   768                     }

   769                     break;

   770                 }

   771                 case opc_return:

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

   773                     break;

   774                 case opc_ireturn:

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

   776                     break;

   777                 case opc_lreturn:

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

   779                     break;

   780                 case opc_freturn:

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

   782                     break;

   783                 case opc_dreturn:

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

   785                     break;

   786                 case opc_areturn:

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

   788                     break;

   789                 case opc_i2l:

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

   791                     break;

   792                 case opc_i2f:

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

   794                     break;

   795                 case opc_i2d:

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

   797                     break;

   798                 case opc_l2i:

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

   800                     break;

   801                     // max int check?

   802                 case opc_l2f:

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

   804                     break;

   805                 case opc_l2d:

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

   807                     break;

   808                 case opc_f2d:

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

   810                          smapper.getF(0));

   811                     break;

   812                 case opc_d2f:

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

   814                          smapper.getD(0));

   815                     break;

   816                 case opc_f2i:

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

   818                          smapper.getF(0));

   819                     break;

   820                 case opc_f2l:

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

   822                          smapper.getF(0));

   823                     break;

   824                 case opc_d2i:

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

   826                          smapper.getD(0));

   827                     break;

   828                 case opc_d2l:

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

   830                     break;

   831                 case opc_i2b:

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

   833                     break;

   834                 case opc_i2c:

   835                     break;

   836                 case opc_i2s:

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

   838                     break;

   839                 case opc_aconst_null:

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

   841                     break;

   842                 case opc_iconst_m1:

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

   844                     break;

   845                 case opc_iconst_0:

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

   847                     break;

   848                 case opc_dconst_0:

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

   850                     break;

   851                 case opc_lconst_0:

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

   853                     break;

   854                 case opc_fconst_0:

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

   856                     break;

   857                 case opc_iconst_1:

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

   859                     break;

   860                 case opc_lconst_1:

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

   862                     break;

   863                 case opc_fconst_1:

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

   865                     break;

   866                 case opc_dconst_1:

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

   868                     break;

   869                 case opc_iconst_2:

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

   871                     break;

   872                 case opc_fconst_2:

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

   874                     break;

   875                 case opc_iconst_3:

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

   877                     break;

   878                 case opc_iconst_4:

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

   880                     break;

   881                 case opc_iconst_5:

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

   883                     break;

   884                 case opc_ldc: {

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

   886                     String v = encodeConstant(indx);

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

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

   889                     break;

   890                 }

   891                 case opc_ldc_w:

   892                 case opc_ldc2_w: {

   893                     int indx = readUShortArg(byteCodes, i);

   894                     i += 2;

   895                     String v = encodeConstant(indx);

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

   897                     if (type == VarType.LONG) {

   898                         final Long lv = new Long(v);

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

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

   901                         if (hi == 0) {

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

   903                         } else {

   904                             smapper.assign(this, VarType.LONG,

   905                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   906                                     Integer.toHexString(low) + ")"

   907                             );

   908                         }

   909                     } else {

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

   911                     }

   912                     break;

   913                 }

   914                 case opc_lcmp:

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

   916                     break;

   917                 case opc_fcmpl:

   918                 case opc_fcmpg:

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

   920                     break;

   921                 case opc_dcmpl:

   922                 case opc_dcmpg:

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

   924                     break;

   925                 case opc_if_acmpeq:

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

   927                                    "===", topMostLabel);

   928                     break;

   929                 case opc_if_acmpne:

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

   931                                    "!==", topMostLabel);

   932                     break;

   933                 case opc_if_icmpeq:

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

   935                                    "==", topMostLabel);

   936                     break;

   937                 case opc_ifeq: {

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

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

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

   941                     i += 2;

   942                     break;

   943                 }

   944                 case opc_ifne: {

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

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

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

   948                     i += 2;

   949                     break;

   950                 }

   951                 case opc_iflt: {

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

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

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

   955                     i += 2;

   956                     break;

   957                 }

   958                 case opc_ifle: {

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

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

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

   962                     i += 2;

   963                     break;

   964                 }

   965                 case opc_ifgt: {

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

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

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

   969                     i += 2;

   970                     break;

   971                 }

   972                 case opc_ifge: {

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

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

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

   976                     i += 2;

   977                     break;

   978                 }

   979                 case opc_ifnonnull: {

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

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

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

   983                     i += 2;

   984                     break;

   985                 }

   986                 case opc_ifnull: {

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

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

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

   990                     i += 2;

   991                     break;

   992                 }

   993                 case opc_if_icmpne:

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

   995                                    "!=", topMostLabel);

   996                     break;

   997                 case opc_if_icmplt:

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

   999                                    "<", topMostLabel);

  1000                     break;

  1001                 case opc_if_icmple:

  1002                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1003                                    "<=", topMostLabel);

  1004                     break;

  1005                 case opc_if_icmpgt:

  1006                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1007                                    ">", topMostLabel);

  1008                     break;

  1009                 case opc_if_icmpge:

  1010                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1011                                    ">=", topMostLabel);

  1012                     break;

  1013                 case opc_goto: {

  1014                     smapper.flush(this);

  1015                     int indx = i + readShortArg(byteCodes, i);

  1016                     goTo(this, i, indx, topMostLabel);

  1017                     i += 2;

  1018                     break;

  1019                 }

  1020                 case opc_lookupswitch: {

  1021                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1022                     break;

  1023                 }

  1024                 case opc_tableswitch: {

  1025                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1026                     break;

  1027                 }

  1028                 case opc_invokeinterface: {

  1029                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1030                     break;

  1031                 }

  1032                 case opc_invokevirtual:

  1033                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1034                     break;

  1035                 case opc_invokespecial:

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

  1037                     break;

  1038                 case opc_invokestatic:

  1039                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1040                     break;

  1041                 case opc_new: {

  1042                     int indx = readUShortArg(byteCodes, i);

  1043                     String ci = jc.getClassName(indx);

  1044                     emit(smapper, this, "var @1 = new @2;",

  1045                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1046                     addReference(ci);

  1047                     i += 2;

  1048                     break;

  1049                 }

  1050                 case opc_newarray:

  1051                     int atype = readUByte(byteCodes, ++i);

  1052                     generateNewArray(atype, smapper);

  1053                     break;

  1054                 case opc_anewarray: {

  1055                     int type = readUShortArg(byteCodes, i);

  1056                     i += 2;

  1057                     generateANewArray(type, smapper);

  1058                     break;

  1059                 }

  1060                 case opc_multianewarray: {

  1061                     int type = readUShortArg(byteCodes, i);

  1062                     i += 2;

  1063                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1064                     break;

  1065                 }

  1066                 case opc_arraylength:

  1067                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1068                     break;

  1069                 case opc_lastore:

  1070                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1071                          smapper.popL(), smapper.popI(), smapper.popA());

  1072                     break;

  1073                 case opc_fastore:

  1074                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1075                          smapper.popF(), smapper.popI(), smapper.popA());

  1076                     break;

  1077                 case opc_dastore:

  1078                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1079                          smapper.popD(), smapper.popI(), smapper.popA());

  1080                     break;

  1081                 case opc_aastore:

  1082                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1083                          smapper.popA(), smapper.popI(), smapper.popA());

  1084                     break;

  1085                 case opc_iastore:

  1086                 case opc_bastore:

  1087                 case opc_castore:

  1088                 case opc_sastore:

  1089                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1090                          smapper.popI(), smapper.popI(), smapper.popA());

  1091                     break;

  1092                 case opc_laload:

  1093                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1094                          smapper.popI(), smapper.getA(0));

  1095                     break;

  1096                 case opc_faload:

  1097                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1098                          smapper.popI(), smapper.getA(0));

  1099                     break;

  1100                 case opc_daload:

  1101                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1102                          smapper.popI(), smapper.getA(0));

  1103                     break;

  1104                 case opc_aaload:

  1105                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1106                          smapper.popI(), smapper.getA(0));

  1107                     break;

  1108                 case opc_iaload:

  1109                 case opc_baload:

  1110                 case opc_caload:

  1111                 case opc_saload:

  1112                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1113                          smapper.popI(), smapper.getA(0));

  1114                     break;

  1115                 case opc_pop:

  1116                 case opc_pop2:

  1117                     smapper.pop(1);

  1118                     debug("/* pop */");

  1119                     break;

  1120                 case opc_dup: {

  1121                     final Variable v = smapper.get(0);

  1122                     if (smapper.isDirty()) {

  1123                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1124                     } else {

  1125                         smapper.assign(this, v.getType(), v);

  1126                     }

  1127                     break;

  1128                 }

  1129                 case opc_dup2: {

  1130                     final Variable vi1 = smapper.get(0);

  1132                     if (vi1.isCategory2()) {

  1133                         emit(smapper, this, "var @1 = @2;",

  1134                              smapper.pushT(vi1.getType()), vi1);

  1135                     } else {

  1136                         final Variable vi2 = smapper.get(1);

  1137                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1138                              smapper.pushT(vi2.getType()), vi2,

  1139                              smapper.pushT(vi1.getType()), vi1);

  1140                     }

  1141                     break;

  1142                 }

  1143                 case opc_dup_x1: {

  1144                     final Variable vi1 = smapper.pop(this);

  1145                     final Variable vi2 = smapper.pop(this);

  1146                     final Variable vo3 = smapper.pushT(vi1.getType());

  1147                     final Variable vo2 = smapper.pushT(vi2.getType());

  1148                     final Variable vo1 = smapper.pushT(vi1.getType());

  1150                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1151                          vo1, vi1, vo2, vi2, vo3, vo1);

  1152                     break;

  1153                 }

  1154                 case opc_dup2_x1: {

  1155                     final Variable vi1 = smapper.pop(this);

  1156                     final Variable vi2 = smapper.pop(this);

  1158                     if (vi1.isCategory2()) {

  1159                         final Variable vo3 = smapper.pushT(vi1.getType());

  1160                         final Variable vo2 = smapper.pushT(vi2.getType());

  1161                         final Variable vo1 = smapper.pushT(vi1.getType());

  1163                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1164                              vo1, vi1, vo2, vi2, vo3, vo1);

  1165                     } else {

  1166                         final Variable vi3 = smapper.pop(this);

  1167                         final Variable vo5 = smapper.pushT(vi2.getType());

  1168                         final Variable vo4 = smapper.pushT(vi1.getType());

  1169                         final Variable vo3 = smapper.pushT(vi3.getType());

  1170                         final Variable vo2 = smapper.pushT(vi2.getType());

  1171                         final Variable vo1 = smapper.pushT(vi1.getType());

  1173                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1174                              vo1, vi1, vo2, vi2, vo3, vi3);

  1175                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1176                              vo4, vo1, vo5, vo2);

  1177                     }

  1178                     break;

  1179                 }

  1180                 case opc_dup_x2: {

  1181                     final Variable vi1 = smapper.pop(this);

  1182                     final Variable vi2 = smapper.pop(this);

  1184                     if (vi2.isCategory2()) {

  1185                         final Variable vo3 = smapper.pushT(vi1.getType());

  1186                         final Variable vo2 = smapper.pushT(vi2.getType());

  1187                         final Variable vo1 = smapper.pushT(vi1.getType());

  1189                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1190                              vo1, vi1, vo2, vi2, vo3, vo1);

  1191                     } else {

  1192                         final Variable vi3 = smapper.pop(this);

  1193                         final Variable vo4 = smapper.pushT(vi1.getType());

  1194                         final Variable vo3 = smapper.pushT(vi3.getType());

  1195                         final Variable vo2 = smapper.pushT(vi2.getType());

  1196                         final Variable vo1 = smapper.pushT(vi1.getType());

  1198                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1199                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1200                     }

  1201                     break;

  1202                 }

  1203                 case opc_dup2_x2: {

  1204                     final Variable vi1 = smapper.pop(this);

  1205                     final Variable vi2 = smapper.pop(this);

  1207                     if (vi1.isCategory2()) {

  1208                         if (vi2.isCategory2()) {

  1209                             final Variable vo3 = smapper.pushT(vi1.getType());

  1210                             final Variable vo2 = smapper.pushT(vi2.getType());

  1211                             final Variable vo1 = smapper.pushT(vi1.getType());

  1213                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1214                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1215                         } else {

  1216                             final Variable vi3 = smapper.pop(this);

  1217                             final Variable vo4 = smapper.pushT(vi1.getType());

  1218                             final Variable vo3 = smapper.pushT(vi3.getType());

  1219                             final Variable vo2 = smapper.pushT(vi2.getType());

  1220                             final Variable vo1 = smapper.pushT(vi1.getType());

  1222                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1223                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1224                         }

  1225                     } else {

  1226                         final Variable vi3 = smapper.pop(this);

  1228                         if (vi3.isCategory2()) {

  1229                             final Variable vo5 = smapper.pushT(vi2.getType());

  1230                             final Variable vo4 = smapper.pushT(vi1.getType());

  1231                             final Variable vo3 = smapper.pushT(vi3.getType());

  1232                             final Variable vo2 = smapper.pushT(vi2.getType());

  1233                             final Variable vo1 = smapper.pushT(vi1.getType());

  1235                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1236                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1237                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1238                                  vo4, vo1, vo5, vo2);

  1239                         } else {

  1240                             final Variable vi4 = smapper.pop(this);

  1241                             final Variable vo6 = smapper.pushT(vi2.getType());

  1242                             final Variable vo5 = smapper.pushT(vi1.getType());

  1243                             final Variable vo4 = smapper.pushT(vi4.getType());

  1244                             final Variable vo3 = smapper.pushT(vi3.getType());

  1245                             final Variable vo2 = smapper.pushT(vi2.getType());

  1246                             final Variable vo1 = smapper.pushT(vi1.getType());

  1248                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1249                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1250                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1251                                  vo5, vo1, vo6, vo2);

  1252                         }

  1253                     }

  1254                     break;

  1255                 }

  1256                 case opc_swap: {

  1257                     final Variable vi1 = smapper.get(0);

  1258                     final Variable vi2 = smapper.get(1);

  1260                     if (vi1.getType() == vi2.getType()) {

  1261                         final Variable tmp = smapper.pushT(vi1.getType());

  1263                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1264                              tmp, vi1, vi2);

  1265                         smapper.pop(1);

  1266                     } else {

  1267                         smapper.pop(2);

  1268                         smapper.pushT(vi1.getType());

  1269                         smapper.pushT(vi2.getType());

  1270                     }

  1271                     break;

  1272                 }

  1273                 case opc_bipush:

  1274                     smapper.assign(this, VarType.INTEGER,

  1275                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1276                     break;

  1277                 case opc_sipush:

  1278                     smapper.assign(this, VarType.INTEGER,

  1279                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1280                     );

  1281                     i += 2;

  1282                     break;

  1283                 case opc_getfield: {

  1284                     int indx = readUShortArg(byteCodes, i);

  1285                     String[] fi = jc.getFieldInfoName(indx);

  1286                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1287                     final String mangleClass = mangleClassName(fi[0]);

  1288                     final String mangleClassAccess = accessClass(mangleClass);

  1289                     smapper.replace(this, type, "@2.call(@1)",

  1290                          smapper.getA(0),

  1291                          accessField(mangleClassAccess + "(false)",

  1292                                      "_" + fi[1], fi)

  1293                     );

  1294                     i += 2;

  1295                     break;

  1296                 }

  1297                 case opc_putfield: {

  1298                     int indx = readUShortArg(byteCodes, i);

  1299                     String[] fi = jc.getFieldInfoName(indx);

  1300                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1301                     final String mangleClass = mangleClassName(fi[0]);

  1302                     final String mangleClassAccess = accessClass(mangleClass);

  1303                     emit(smapper, this, "@3.call(@2, @1);",

  1304                          smapper.popT(type),

  1305                          smapper.popA(),

  1306                          accessField(mangleClassAccess + "(false)",

  1307                                      "_" + fi[1], fi));

  1308                     i += 2;

  1309                     break;

  1310                 }

  1311                 case opc_getstatic: {

  1312                     int indx = readUShortArg(byteCodes, i);

  1313                     String[] fi = jc.getFieldInfoName(indx);

  1314                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1315                     String ac = accessClass(mangleClassName(fi[0]));

  1316                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1317                     smapper.assign(this, type, af + "()");

  1318                     i += 2;

  1319                     addReference(fi[0]);

  1320                     break;

  1321                 }

  1322                 case opc_putstatic: {

  1323                     int indx = readUShortArg(byteCodes, i);

  1324                     String[] fi = jc.getFieldInfoName(indx);

  1325                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1326                     emit(smapper, this, "@1(false)._@2(@3);",

  1327                          accessClass(mangleClassName(fi[0])), fi[1],

  1328                          smapper.popT(type));

  1329                     i += 2;

  1330                     addReference(fi[0]);

  1331                     break;

  1332                 }

  1333                 case opc_checkcast: {

  1334                     int indx = readUShortArg(byteCodes, i);

  1335                     generateCheckcast(indx, smapper);

  1336                     i += 2;

  1337                     break;

  1338                 }

  1339                 case opc_instanceof: {

  1340                     int indx = readUShortArg(byteCodes, i);

  1341                     generateInstanceOf(indx, smapper);

  1342                     i += 2;

  1343                     break;

  1344                 }

  1345                 case opc_athrow: {

  1346                     final CharSequence v = smapper.popA();

  1347                     smapper.clear();

  1349                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1350                          smapper.pushA(), v);

  1351                     break;

  1352                 }

  1354                 case opc_monitorenter: {

  1355                     debug("/* monitor enter */");

  1356                     smapper.popA();

  1357                     break;

  1358                 }

  1360                 case opc_monitorexit: {

  1361                     debug("/* monitor exit */");

  1362                     smapper.popA();

  1363                     break;

  1364                 }

  1366                 case opc_wide:

  1367                     wide = true;

  1368                     break;

  1370                 default: {

  1371                     wide = false;

  1372                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1373                          Integer.toString(c));

  1374                 }

  1375             }

  1376             if (debug(" //")) {

  1377                 generateByteCodeComment(prev, i, byteCodes);

  1378             }

  1379             if (outChanged) {

  1380                 append("\n");

  1381             }

  1382         }

  1383         if (previousTrap != null) {

  1384             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1385         }

  1386         if (didBranches) {

  1387             append("\n    }\n");

  1388         }

  1389         while (openBraces-- > 0) {

  1390             append('}');

  1391         }

  1392         append("\n};");

  1393     }

  1395     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1396         int i, final CharSequence v2, final CharSequence v1,

  1397         final String test, int topMostLabel

  1398     ) throws IOException {

  1399         mapper.flush(this);

  1400         int indx = i + readShortArg(byteCodes, i);

  1401         append("if ((").append(v1)

  1402            .append(") ").append(test).append(" (")

  1403            .append(v2).append(")) ");

  1404         goTo(this, i, indx, topMostLabel);

  1405         return i + 2;

  1406     }

  1408     private int readInt4(byte[] byteCodes, int offset) {

  1409         final int d = byteCodes[offset + 0] << 24;

  1410         final int c = byteCodes[offset + 1] << 16;

  1411         final int b = byteCodes[offset + 2] << 8;

  1412         final int a = byteCodes[offset + 3];

  1413         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1414     }

  1415     private static int readUByte(byte[] byteCodes, int offset) {

  1416         return byteCodes[offset] & 0xff;

  1417     }

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

  1420         return ((byteCodes[offset] & 0xff) << 8)

  1421                     | (byteCodes[offset + 1] & 0xff);

  1422     }

  1423     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1424         return readUShort(byteCodes, offsetInstruction + 1);

  1425     }

  1427     private static int readShort(byte[] byteCodes, int offset) {

  1428         int signed = byteCodes[offset];

  1429         byte b0 = (byte)signed;

  1430         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1431     }

  1432     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1433         return readShort(byteCodes, offsetInstruction + 1);

  1434     }

  1436     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1437         int i = 0;

  1438         Boolean count = null;

  1439         boolean array = false;

  1440         sig.append("__");

  1441         int firstPos = sig.length();

  1442         while (i < descriptor.length()) {

  1443             char ch = descriptor.charAt(i++);

  1444             switch (ch) {

  1445                 case '(':

  1446                     count = true;

  1447                     continue;

  1448                 case ')':

  1449                     count = false;

  1450                     continue;

  1451                 case 'B':

  1452                 case 'C':

  1453                 case 'D':

  1454                 case 'F':

  1455                 case 'I':

  1456                 case 'J':

  1457                 case 'S':

  1458                 case 'Z':

  1459                     if (count) {

  1460                         if (array) {

  1461                             sig.append("_3");

  1462                         }

  1463                         sig.append(ch);

  1464                         if (ch == 'J' || ch == 'D') {

  1465                             cnt.append('1');

  1466                         } else {

  1467                             cnt.append('0');

  1468                         }

  1469                     } else {

  1470                         sig.insert(firstPos, ch);

  1471                         if (array) {

  1472                             returnType[0] = '[';

  1473                             sig.insert(firstPos, "_3");

  1474                         } else {

  1475                             returnType[0] = ch;

  1476                         }

  1477                     }

  1478                     array = false;

  1479                     continue;

  1480                 case 'V':

  1481                     assert !count;

  1482                     returnType[0] = 'V';

  1483                     sig.insert(firstPos, 'V');

  1484                     continue;

  1485                 case 'L':

  1486                     int next = descriptor.indexOf(';', i);

  1487                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1488                     if (count) {

  1489                         if (array) {

  1490                             sig.append("_3");

  1491                         }

  1492                         sig.append(realSig);

  1493                         cnt.append('0');

  1494                     } else {

  1495                         sig.insert(firstPos, realSig);

  1496                         if (array) {

  1497                             sig.insert(firstPos, "_3");

  1498                         }

  1499                         returnType[0] = 'L';

  1500                     }

  1501                     i = next + 1;

  1502                     array = false;

  1503                     continue;

  1504                 case '[':

  1505                     array = true;

  1506                     continue;

  1507                 default:

  1508                     throw new IllegalStateException("Invalid char: " + ch);

  1509             }

  1510         }

  1511     }

  1513     static String mangleSig(String sig) {

  1514         return mangleSig(sig, 0, sig.length());

  1515     }

  1517     private static String mangleMethodName(String name) {

  1518         StringBuilder sb = new StringBuilder(name.length() * 2);

  1519         int last = name.length();

  1520         for (int i = 0; i < last; i++) {

  1521             final char ch = name.charAt(i);

  1522             switch (ch) {

  1523                 case '_': sb.append("_1"); break;

  1524                 default: sb.append(ch); break;

  1525             }

  1526         }

  1527         return sb.toString();

  1528     }

  1529     private static String mangleSig(String txt, int first, int last) {

  1530         StringBuilder sb = new StringBuilder((last - first) * 2);

  1531         for (int i = first; i < last; i++) {

  1532             final char ch = txt.charAt(i);

  1533             switch (ch) {

  1534                 case '/': sb.append('_'); break;

  1535                 case '_': sb.append("_1"); break;

  1536                 case ';': sb.append("_2"); break;

  1537                 case '[': sb.append("_3"); break;

  1538                 default:

  1539                     if (Character.isJavaIdentifierPart(ch)) {

  1540                         sb.append(ch);

  1541                     } else {

  1542                         sb.append("_0");

  1543                         String hex = Integer.toHexString(ch).toLowerCase(Locale.ENGLISH);

  1544                         for (int m = hex.length(); m < 4; m++) {

  1545                             sb.append("0");

  1546                         }

  1547                         sb.append(hex);

  1548                     }

  1549                 break;

  1550             }

  1551         }

  1552         return sb.toString();

  1553     }

  1555     private static String mangleClassName(String name) {

  1556         return mangleSig(name);

  1557     }

  1559     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1560         StringBuilder name = new StringBuilder();

  1561         if ("<init>".equals(m.getName())) { // NOI18N

  1562             name.append("cons"); // NOI18N

  1563         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1564             name.append("class"); // NOI18N

  1565         } else {

  1566             name.append(mangleMethodName(m.getName()));

  1567         }

  1569         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1570         return name.toString();

  1571     }

  1573     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1574         StringBuilder name = new StringBuilder();

  1575         String descr = mi[2];//mi.getDescriptor();

  1576         String nm= mi[1];

  1577         if ("<init>".equals(nm)) { // NOI18N

  1578             name.append("cons"); // NOI18N

  1579         } else {

  1580             name.append(mangleMethodName(nm));

  1581         }

  1582         countArgs(descr, returnType, name, cnt);

  1583         return name.toString();

  1584     }

  1586     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1587     throws IOException {

  1588         int methodIndex = readUShortArg(byteCodes, i);

  1589         String[] mi = jc.getFieldInfoName(methodIndex);

  1590         char[] returnType = { 'V' };

  1591         StringBuilder cnt = new StringBuilder();

  1592         String mn = findMethodName(mi, cnt, returnType);

  1594         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1595         final CharSequence[] vars = new CharSequence[numArguments];

  1597         for (int j = numArguments - 1; j >= 0; --j) {

  1598             vars[j] = mapper.popValue();

  1599         }

  1601         if (returnType[0] != 'V') {

  1602             append("var ")

  1603                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1604                .append(" = ");

  1605         }

  1607         final String in = mi[0];

  1608         String mcn;

  1609         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1610             mcn = "java_lang_Class";

  1611         } else {

  1612             mcn = mangleClassName(in);

  1613         }

  1614         String object = accessClass(mcn) + "(false)";

  1615         if (mn.startsWith("cons_")) {

  1616             object += ".constructor";

  1617         }

  1618         append(accessStaticMethod(object, mn, mi));

  1619         if (isStatic) {

  1620             append('(');

  1621         } else {

  1622             append(".call(");

  1623         }

  1624         if (numArguments > 0) {

  1625             append(vars[0]);

  1626             for (int j = 1; j < numArguments; ++j) {

  1627                 append(", ");

  1628                 append(vars[j]);

  1629             }

  1630         }

  1631         append(");");

  1632         i += 2;

  1633         addReference(in);

  1634         return i;

  1635     }

  1636     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1637     throws IOException {

  1638         int methodIndex = readUShortArg(byteCodes, i);

  1639         String[] mi = jc.getFieldInfoName(methodIndex);

  1640         char[] returnType = { 'V' };

  1641         StringBuilder cnt = new StringBuilder();

  1642         String mn = findMethodName(mi, cnt, returnType);

  1644         final int numArguments = cnt.length() + 1;

  1645         final CharSequence[] vars = new CharSequence[numArguments];

  1647         for (int j = numArguments - 1; j >= 0; --j) {

  1648             vars[j] = mapper.popValue();

  1649         }

  1651         if (returnType[0] != 'V') {

  1652             append("var ")

  1653                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1654                .append(" = ");

  1655         }

  1657         append(accessVirtualMethod(vars[0].toString(), mn, mi));

  1658         append('(');

  1659         String sep = "";

  1660         for (int j = 1; j < numArguments; ++j) {

  1661             append(sep);

  1662             append(vars[j]);

  1663             sep = ", ";

  1664         }

  1665         append(");");

  1666         i += 2;

  1667         return i;

  1668     }

  1670     private void addReference(String cn) throws IOException {

  1671         if (requireReference(cn)) {

  1672             debug(" /* needs " + cn + " */");

  1673         }

  1674     }

  1676     private void outType(String d, StringBuilder out) {

  1677         int arr = 0;

  1678         while (d.charAt(0) == '[') {

  1679             out.append('A');

  1680             d = d.substring(1);

  1681         }

  1682         if (d.charAt(0) == 'L') {

  1683             assert d.charAt(d.length() - 1) == ';';

  1684             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1685         } else {

  1686             out.append(d);

  1687         }

  1688     }

  1690     private String encodeConstant(int entryIndex) throws IOException {

  1691         String[] classRef = { null };

  1692         String s = jc.stringValue(entryIndex, classRef);

  1693         if (classRef[0] != null) {

  1694             if (classRef[0].startsWith("[")) {

  1695                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1696             } else {

  1697                 addReference(classRef[0]);

  1698                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1699             }

  1700         }

  1701         return s;

  1702     }

  1704     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1705         byte[] arr = m.findAnnotationData(true);

  1706         if (arr == null) {

  1707             return null;

  1708         }

  1709         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1710         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1711         class P extends AnnotationParser {

  1712             public P() {

  1713                 super(false, true);

  1714             }

  1716             int cnt;

  1717             String[] args = new String[30];

  1718             String body;

  1719             boolean javacall;

  1720             boolean html4j;

  1722             @Override

  1723             protected void visitAttr(String type, String attr, String at, String value) {

  1724                 if (type.equals(jvmType)) {

  1725                     if ("body".equals(attr)) {

  1726                         body = value;

  1727                     } else if ("args".equals(attr)) {

  1728                         args[cnt++] = value;

  1729                     } else {

  1730                         throw new IllegalArgumentException(attr);

  1731                     }

  1732                 }

  1733                 if (type.equals(htmlType)) {

  1734                     html4j = true;

  1735                     if ("body".equals(attr)) {

  1736                         body = value;

  1737                     } else if ("args".equals(attr)) {

  1738                         args[cnt++] = value;

  1739                     } else if ("javacall".equals(attr)) {

  1740                         javacall = "1".equals(value);

  1741                     } else {

  1742                         throw new IllegalArgumentException(attr);

  1743                     }

  1744                 }

  1745             }

  1746         }

  1747         P p = new P();

  1748         p.parse(arr, jc);

  1749         if (p.body == null) {

  1750             return null;

  1751         }

  1752         StringBuilder cnt = new StringBuilder();

  1753         final String mn = findMethodName(m, cnt);

  1754         append(destObject).append(".").append(mn);

  1755         append(" = function(");

  1756         String space = "";

  1757         int index = 0;

  1758         StringBuilder toValue = new StringBuilder();

  1759         for (int i = 0; i < cnt.length(); i++) {

  1760             append(space);

  1761             space = outputArg(this, p.args, index);

  1762             if (p.html4j && space.length() > 0) {

  1763                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1764                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1765                     append(p.args[index]).append(");");

  1766             }

  1767             index++;

  1768         }

  1769         append(") {").append("\n");

  1770         append(toValue.toString());

  1771         if (p.javacall) {

  1772             int lastSlash = jc.getClassName().lastIndexOf('/');

  1773             final String pkg = jc.getClassName().substring(0, lastSlash);

  1774             append(mangleCallbacks(pkg, p.body));

  1775             requireReference(pkg + "/$JsCallbacks$");

  1776         } else {

  1777             append(p.body);

  1778         }

  1779         append("\n}\n");

  1780         return mn;

  1781     }

  1783     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1784         StringBuilder sb = new StringBuilder();

  1785         int pos = 0;

  1786         for (;;) {

  1787             int next = body.indexOf(".@", pos);

  1788             if (next == -1) {

  1789                 sb.append(body.substring(pos));

  1790                 body = sb.toString();

  1791                 break;

  1792             }

  1793             int ident = next;

  1794             while (ident > 0) {

  1795                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1796                     ident++;

  1797                     break;

  1798                 }

  1799             }

  1800             String refId = body.substring(ident, next);

  1802             sb.append(body.substring(pos, ident));

  1804             int sigBeg = body.indexOf('(', next);

  1805             int sigEnd = body.indexOf(')', sigBeg);

  1806             int colon4 = body.indexOf("::", next);

  1807             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1808                 throw new IllegalStateException("Malformed body " + body);

  1809             }

  1810             String fqn = body.substring(next + 2, colon4);

  1811             String method = body.substring(colon4 + 2, sigBeg);

  1812             String params = body.substring(sigBeg, sigEnd + 1);

  1814             int paramBeg = body.indexOf('(', sigEnd + 1);

  1816             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1817             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1818             sb.append("(").append(refId);

  1819             if (body.charAt(paramBeg + 1) != ')') {

  1820                 sb.append(",");

  1821             }

  1822             pos = paramBeg + 1;

  1823         }

  1824         sb = null;

  1825         pos = 0;

  1826         for (;;) {

  1827             int next = body.indexOf("@", pos);

  1828             if (next == -1) {

  1829                 if (sb == null) {

  1830                     return body;

  1831                 }

  1832                 sb.append(body.substring(pos));

  1833                 return sb;

  1834             }

  1835             if (sb == null) {

  1836                 sb = new StringBuilder();

  1837             }

  1839             sb.append(body.substring(pos, next));

  1841             int sigBeg = body.indexOf('(', next);

  1842             int sigEnd = body.indexOf(')', sigBeg);

  1843             int colon4 = body.indexOf("::", next);

  1844             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1845                 throw new IllegalStateException("Malformed body " + body);

  1846             }

  1847             String fqn = body.substring(next + 1, colon4);

  1848             String method = body.substring(colon4 + 2, sigBeg);

  1849             String params = body.substring(sigBeg, sigEnd + 1);

  1851             int paramBeg = body.indexOf('(', sigEnd + 1);

  1853             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1854             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1855             sb.append("(");

  1856             pos = paramBeg + 1;

  1857         }

  1858     }

  1860     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1861         if (params.startsWith("(")) {

  1862             params = params.substring(1);

  1863         }

  1864         if (params.endsWith(")")) {

  1865             params = params.substring(0, params.length() - 1);

  1866         }

  1867         StringBuilder sb = new StringBuilder();

  1868         final String fqnu = fqn.replace('.', '_');

  1869         final String rfqn = mangleClassName(fqnu);

  1870         final String rm = mangleMethodName(method);

  1871         final String srp;

  1872         {

  1873             StringBuilder pb = new StringBuilder();

  1874             int len = params.length();

  1875             int indx = 0;

  1876             while (indx < len) {

  1877                 char ch = params.charAt(indx);

  1878                 if (ch == '[' || ch == 'L') {

  1879                     pb.append("Ljava/lang/Object;");

  1880                     indx = params.indexOf(';', indx) + 1;

  1881                 } else {

  1882                     pb.append(ch);

  1883                     indx++;

  1884                 }

  1885             }

  1886             srp = mangleSig(pb.toString());

  1887         }

  1888         final String rp = mangleSig(params);

  1889         final String mrp = mangleMethodName(rp);

  1890         sb.append(rfqn).append("$").append(rm).

  1891             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1892         if (!isStatic) {

  1893             sb.append('L').append(fqnu).append("_2");

  1894         }

  1895         sb.append(srp);

  1896         return sb.toString();

  1897     }

  1899     private static String className(ClassData jc) {

  1900         //return jc.getName().getInternalName().replace('/', '_');

  1901         return mangleClassName(jc.getClassName());

  1902     }

  1904     private static String[] findAnnotation(

  1905         byte[] arr, ClassData cd, final String className,

  1906         final String... attrNames

  1907     ) throws IOException {

  1908         if (arr == null) {

  1909             return null;

  1910         }

  1911         final String[] values = new String[attrNames.length];

  1912         final boolean[] found = { false };

  1913         final String jvmType = "L" + className.replace('.', '/') + ";";

  1914         AnnotationParser ap = new AnnotationParser(false, true) {

  1915             @Override

  1916             protected void visitAttr(String type, String attr, String at, String value) {

  1917                 if (type.equals(jvmType)) {

  1918                     found[0] = true;

  1919                     for (int i = 0; i < attrNames.length; i++) {

  1920                         if (attrNames[i].equals(attr)) {

  1921                             values[i] = value;

  1922                         }

  1923                     }

  1924                 }

  1925             }

  1927         };

  1928         ap.parse(arr, cd);

  1929         return found[0] ? values : null;

  1930     }

  1932     private CharSequence initField(FieldData v) {

  1933         final String is = v.getInternalSig();

  1934         if (is.length() == 1) {

  1935             switch (is.charAt(0)) {

  1936                 case 'S':

  1937                 case 'J':

  1938                 case 'B':

  1939                 case 'Z':

  1940                 case 'C':

  1941                 case 'I': return " = 0;";

  1942                 case 'F':

  1943                 case 'D': return " = 0.0;";

  1944                 default:

  1945                     throw new IllegalStateException(is);

  1946             }

  1947         }

  1948         return " = null;";

  1949     }

  1951     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  1952         AnnotationParser ap = new AnnotationParser(true, false) {

  1953             int[] cnt = new int[32];

  1954             int depth;

  1956             @Override

  1957             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1958                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1959                 requireReference(slashType);

  1961                 if (cnt[depth]++ > 0) {

  1962                     append(",");

  1963                 }

  1964                 if (top) {

  1965                     append('"').append(attrType).append("\" : ");

  1966                 }

  1967                 append("{\n");

  1968                 cnt[++depth] = 0;

  1969             }

  1971             @Override

  1972             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1973                 append("\n}\n");

  1974                 depth--;

  1975             }

  1977             @Override

  1978             protected void visitValueStart(String attrName, char type) throws IOException {

  1979                 if (cnt[depth]++ > 0) {

  1980                     append(",\n");

  1981                 }

  1982                 cnt[++depth] = 0;

  1983                 if (attrName != null) {

  1984                     append(attrName).append(" : ");

  1985                 }

  1986                 if (type == '[') {

  1987                     append("[");

  1988                 }

  1989             }

  1991             @Override

  1992             protected void visitValueEnd(String attrName, char type) throws IOException {

  1993                 if (type == '[') {

  1994                     append("]");

  1995                 }

  1996                 depth--;

  1997             }

  1999             @Override

  2000             protected void visitAttr(String type, String attr, String attrType, String value)

  2001             throws IOException {

  2002                 if (attr == null && value == null) {

  2003                     return;

  2004                 }

  2005                 append(value);

  2006             }

  2008             @Override

  2009             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2010             throws IOException {

  2011                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2012                 requireReference(slashType);

  2014                 append(accessClass(mangleClassName(slashType)))

  2015                    .append("(false).constructor.fld_").append(value);

  2016             }

  2017         };

  2018         ap.parse(data, cd);

  2019     }

  2021     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2022         final String name = args[indx];

  2023         if (name == null) {

  2024             return "";

  2025         }

  2026         if (name.contains(",")) {

  2027             throw new IOException("Wrong parameter with ',': " + name);

  2028         }

  2029         out.append(name);

  2030         return ",";

  2031     }

  2033     final void emitNoFlush(

  2034         StackMapper sm,

  2035         final String format, final CharSequence... params

  2036     ) throws IOException {

  2037         emitImpl(this, format, params);

  2038     }

  2039     static final void emit(

  2040         StackMapper sm,

  2041         final Appendable out,

  2042         final String format, final CharSequence... params

  2043     ) throws IOException {

  2044         sm.flush(out);

  2045         emitImpl(out, format, params);

  2046     }

  2047     static void emitImpl(final Appendable out,

  2048                              final String format,

  2049                              final CharSequence... params) throws IOException {

  2050         final int length = format.length();

  2052         int processed = 0;

  2053         int paramOffset = format.indexOf('@');

  2054         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2055             final char paramChar = format.charAt(paramOffset + 1);

  2056             if ((paramChar >= '1') && (paramChar <= '9')) {

  2057                 final int paramIndex = paramChar - '0' - 1;

  2059                 out.append(format, processed, paramOffset);

  2060                 out.append(params[paramIndex]);

  2062                 ++paramOffset;

  2063                 processed = paramOffset + 1;

  2064             }

  2066             paramOffset = format.indexOf('@', paramOffset + 1);

  2067         }

  2069         out.append(format, processed, length);

  2070     }

  2072     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2073         append("} catch (e) {\n");

  2074         int finallyPC = -1;

  2075         for (TrapData e : traps) {

  2076             if (e == null) {

  2077                 break;

  2078             }

  2079             if (e.catch_cpx != 0) { //not finally

  2080                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2081                 addReference(classInternalName);

  2082                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2083                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2084                 append("var stA0 = e;");

  2085                 goTo(this, current, e.handler_pc, topMostLabel);

  2086                 append("}\n");

  2087             } else {

  2088                 finallyPC = e.handler_pc;

  2089             }

  2090         }

  2091         if (finallyPC == -1) {

  2092             append("throw e;");

  2093         } else {

  2094             append("var stA0 = e;");

  2095             goTo(this, current, finallyPC, topMostLabel);

  2096         }

  2097         append("\n}");

  2098     }

  2100     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2101         if (to < current) {

  2102             if (canBack < to) {

  2103                 out.append("{ gt = 0; continue X_" + to + "; }");

  2104             } else {

  2105                 out.append("{ gt = " + to + "; continue X_0; }");

  2106             }

  2107         } else {

  2108             out.append("{ gt = " + to + "; break IF; }");

  2109         }

  2110     }

  2112     private static void emitIf(

  2113         StackMapper sm,

  2114         Appendable out, String pattern,

  2115         CharSequence param,

  2116         int current, int to, int canBack

  2117     ) throws IOException {

  2118         sm.flush(out);

  2119         emitImpl(out, pattern, param);

  2120         goTo(out, current, to, canBack);

  2121     }

  2123     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2124         String jvmType;

  2125         switch (atype) {

  2126             case 4: jvmType = "[Z"; break;

  2127             case 5: jvmType = "[C"; break;

  2128             case 6: jvmType = "[F"; break;

  2129             case 7: jvmType = "[D"; break;

  2130             case 8: jvmType = "[B"; break;

  2131             case 9: jvmType = "[S"; break;

  2132             case 10: jvmType = "[I"; break;

  2133             case 11: jvmType = "[J"; break;

  2134             default: throw new IllegalStateException("Array type: " + atype);

  2135         }

  2136         emit(smapper, this,

  2137             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2138              smapper.popI(), smapper.pushA(), jvmType);

  2139     }

  2141     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2142         String typeName = jc.getClassName(type);

  2143         String ref = "null";

  2144         if (typeName.startsWith("[")) {

  2145             typeName = "'[" + typeName + "'";

  2146         } else {

  2147             ref = "vm." + mangleClassName(typeName);

  2148             typeName = "'[L" + typeName + ";'";

  2149         }

  2150         emit(smapper, this,

  2151             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2152              smapper.popI(), smapper.pushA(), typeName, ref);

  2153     }

  2155     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2156         String typeName = jc.getClassName(type);

  2157         int dim = readUByte(byteCodes, ++i);

  2158         StringBuilder dims = new StringBuilder();

  2159         dims.append('[');

  2160         for (int d = 0; d < dim; d++) {

  2161             if (d != 0) {

  2162                 dims.insert(1, ",");

  2163             }

  2164             dims.insert(1, smapper.popI());

  2165         }

  2166         dims.append(']');

  2167         String fn = "null";

  2168         if (typeName.charAt(dim) == 'L') {

  2169             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2170         }

  2171         emit(smapper, this,

  2172             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2173              dims.toString(), smapper.pushA(), typeName, fn

  2174         );

  2175         return i;

  2176     }

  2178     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2179         int table = i / 4 * 4 + 4;

  2180         int dflt = i + readInt4(byteCodes, table);

  2181         table += 4;

  2182         int low = readInt4(byteCodes, table);

  2183         table += 4;

  2184         int high = readInt4(byteCodes, table);

  2185         table += 4;

  2186         final CharSequence swVar = smapper.popValue();

  2187         smapper.flush(this);

  2188         append("switch (").append(swVar).append(") {\n");

  2189         while (low <= high) {

  2190             int offset = i + readInt4(byteCodes, table);

  2191             table += 4;

  2192             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2193             low++;

  2194         }

  2195         append("  default: ");

  2196         goTo(this, i, dflt, topMostLabel);

  2197         append("\n}");

  2198         i = table - 1;

  2199         return i;

  2200     }

  2202     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2203         int table = i / 4 * 4 + 4;

  2204         int dflt = i + readInt4(byteCodes, table);

  2205         table += 4;

  2206         int n = readInt4(byteCodes, table);

  2207         table += 4;

  2208         final CharSequence swVar = smapper.popValue();

  2209         smapper.flush(this);

  2210         append("switch (").append(swVar).append(") {\n");

  2211         while (n-- > 0) {

  2212             int cnstnt = readInt4(byteCodes, table);

  2213             table += 4;

  2214             int offset = i + readInt4(byteCodes, table);

  2215             table += 4;

  2216             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2217         }

  2218         append("  default: ");

  2219         goTo(this, i, dflt, topMostLabel);

  2220         append("\n}");

  2221         i = table - 1;

  2222         return i;

  2223     }

  2225     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2226         String type = jc.getClassName(indx);

  2227         if (!type.startsWith("[")) {

  2228             emit(smapper, this,

  2229                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2230                  smapper.popA(), smapper.pushI(),

  2231                  type.replace('/', '_'));

  2232         } else {

  2233             int cnt = 0;

  2234             while (type.charAt(cnt) == '[') {

  2235                 cnt++;

  2236             }

  2237             if (type.charAt(cnt) == 'L') {

  2238                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2239                 emit(smapper, this,

  2240                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2241                     smapper.popA(), smapper.pushI(),

  2242                     type, "" + cnt

  2243                 );

  2244             } else {

  2245                 emit(smapper, this,

  2246                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2247                     smapper.popA(), smapper.pushI(), type

  2248                 );

  2249             }

  2250         }

  2251     }

  2253     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2254         String type = jc.getClassName(indx);

  2255         if (!type.startsWith("[")) {

  2256             emitNoFlush(smapper,

  2257                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2258                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2259         } else {

  2260             int cnt = 0;

  2261             while (type.charAt(cnt) == '[') {

  2262                 cnt++;

  2263             }

  2264             if (type.charAt(cnt) == 'L') {

  2265                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2266                 emitNoFlush(smapper,

  2267                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2268                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2269                 );

  2270             } else {

  2271                 emitNoFlush(smapper,

  2272                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2273                      smapper.getT(0, VarType.REFERENCE, false), type

  2274                 );

  2275             }

  2276         }

  2277     }

  2279     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2280         for (int j = prev; j <= i; j++) {

  2281             append(" ");

  2282             final int cc = readUByte(byteCodes, j);

  2283             append(Integer.toString(cc));

  2284         }

  2285     }

  2286 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 11 May 2014 23:06:45 +0200
branch	closure
changeset 1558	0c5a8b83182a
parent 1547	7c10f6d5635c
child 1564	380564345434
permissions	-rw-r--r--