hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@a34e2191b6be

     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,

   102             int params

   103     ) throws IOException {

   104         return object + "." + mangledName + '(';

   105     }

   107     protected void declaredClass(ClassData classData, String mangledName)

   108             throws IOException {

   109     }

   111     protected void declaredField(FieldData fieldData,

   112                                  String destObject,

   113                                  String mangledName) throws IOException {

   114     }

   116     protected void declaredMethod(MethodData methodData,

   117                                   String destObject,

   118                                   String mangledName) throws IOException {

   119     }

   121     /** Prints out a debug message.

   122      *

   123      * @param msg the message

   124      * @return true if the message has been printed

   125      * @throws IOException

   126      */

   127     boolean debug(String msg) throws IOException {

   128         append(msg);

   129         return true;

   130     }

   132     /**

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

   134      *

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

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

   137      *

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

   139      */

   141     public String compile(InputStream classFile) throws IOException {

   142         return compile(new ClassData(classFile));

   143     }

   145     protected String compile(ClassData classData) throws IOException {

   146         this.jc = classData;

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

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

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

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

   151             );

   152         }

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

   154         {

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

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

   157                 "resource", "processByteCode"

   158             );

   159             if (arr != null) {

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

   161                     requireScript(arr[0]);

   162                 }

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

   164                     return null;

   165                 }

   166             }

   167         }

   168         {

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

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

   171                 "value"

   172             );

   173             if (arr != null) {

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

   175                     requireScript(arr[0]);

   176                 } else {

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

   178                     requireScript(

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

   180                     );

   181                 }

   182             }

   183         }

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

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

   186             "container", "prototype"

   187         );

   188         StringArray toInitilize = new StringArray();

   189         final String className = className(jc);

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

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

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

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

   194         if (proto == null) {

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

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

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

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

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

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

   201         } else {

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

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

   204                 proto[0] = "p";

   205             }

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

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

   208         }

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

   210             if (v.isStatic()) {

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

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

   213                         continue;

   214                     }

   215                 }

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

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

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

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

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

   221             } else {

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

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

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

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

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

   227                    .append("; };");

   228             }

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

   231         }

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

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

   234             if (javaScriptOnly(onlyArr)) continue;

   235             String destObject;

   236             String mn;

   237             append("\n    ");

   238             if (m.isStatic()) {

   239                 destObject = "c";

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

   241             } else {

   242                 if (m.isConstructor()) {

   243                     destObject = "CLS";

   244                     mn = generateInstanceMethod(destObject, m);

   245                 } else {

   246                     destObject = "c";

   247                     mn = generateInstanceMethod(destObject, m);

   248                 }

   249             }

   250             declaredMethod(m, destObject, mn);

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

   252             if (runAnno != null) {

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

   254                 generateAnno(jc, runAnno);

   255                 append("\n    };");

   256             }

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

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

   259         }

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

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

   262         String instOfName = "$instOf_" + className;

   263         append("\n        Object.defineProperty(x, '").append(instOfName).append("', { value : true });");

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

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

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

   267             requireReference(superInterface);

   268         }

   269         append("\n    }");

   270         append("\n    try {");

   271         append("\n      Object.defineProperty(c, 'fillInstOf', { value: fillInstOf });");

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

   273         append("\n    } catch (ignore) {");

   274         append("\n    }");

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

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

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

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

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

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

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

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

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

   284         if (classAnno != null) {

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

   286             generateAnno(jc, classAnno);

   287             append("\n    };");

   288         }

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

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

   291         }

   292         append("\n  }");

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

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

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

   296         append("\n    }");

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

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

   299             if (javaScriptOnly(onlyArr)) continue;

   300             if (!v.isStatic()) {

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

   302                     append(className).append('_').

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

   304             }

   305         }

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

   307         append("\n  }");

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

   309         append("\n};");

   311         declaredClass(jc, className);

   313 //        StringBuilder sb = new StringBuilder();

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

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

   316 //        }

   317         return "";

   318     }

   320     private boolean javaScriptOnly(byte[] anno) throws IOException {

   321         String[] only = findAnnotation(anno, jc,

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

   323             "name", "value"

   324         );

   325         if (only != null) {

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

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

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

   329             }

   330             if (ExportedSymbols.isMarkedAsExported(anno, jc)) {

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

   332                     .append(only[0]).append(";");

   333             }

   334             return true;

   335         }

   336         return false;

   337     }

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

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

   340         if (jsb != null) {

   341             return jsb;

   342         }

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

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

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

   346         }

   347         generateMethod(destObject, mn, m);

   348         return mn;

   349     }

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

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

   353         if (jsb != null) {

   354             return jsb;

   355         }

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

   357         generateMethod(destObject, mn, m);

   358         return mn;

   359     }

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

   362             throws IOException {

   363         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   364         TrapDataIterator trap = m.getTrapDataIterator();

   365         final LocalsMapper lmapper =

   366                 new LocalsMapper(stackMapIterator.getArguments());

   368         boolean obj = "java/lang/Object".equals(jc.getClassName());

   370         if (obj) {

   371             append("Object.defineProperty(").append(destObject).

   372             append(", '").append(name).append("', { configurable: true, writable: true, value: function(");

   373         } else {

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

   375         }

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

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

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

   380         if (byteCodes == null) {

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

   382                .append(jc.getClassName()).append('.')

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

   384             if (obj) {

   385                 append("}");

   386             }

   387             append("};");

   388             return;

   389         }

   391         final StackMapper smapper = new StackMapper();

   393         if (!m.isStatic()) {

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

   395         }

   397         int lastStackFrame;

   398         TrapData[] previousTrap = null;

   399         boolean wide = false;

   400         boolean didBranches;

   401         if (stackMapIterator.isEmpty()) {

   402             didBranches = false;

   403             lastStackFrame = 0;

   404         } else {

   405             didBranches = true;

   406             lastStackFrame = -1;

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

   408         }

   410         int openBraces = 0;

   411         int topMostLabel = 0;

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

   413             int prev = i;

   414             outChanged = false;

   415             stackMapIterator.advanceTo(i);

   416             boolean changeInCatch = trap.advanceTo(i);

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

   418                 if (previousTrap != null) {

   419                     generateCatch(previousTrap, i, topMostLabel);

   420                     previousTrap = null;

   421                 }

   422             }

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

   424                 smapper.flush(this);

   425                 if (i != 0) {

   426                     append("    }\n");

   427                 }

   428                 if (openBraces > 64) {

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

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

   431                     }

   432                     openBraces = 1;

   433                     topMostLabel = i;

   434                 }

   436                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   440                 openBraces++;

   441                 changeInCatch = true;

   442             } else {

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

   444             }

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

   446                 append("try {");

   447                 previousTrap = trap.current();

   448             }

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

   450             switch (c) {

   451                 case opc_aload_0:

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

   453                     break;

   454                 case opc_iload_0:

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

   456                     break;

   457                 case opc_lload_0:

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

   459                     break;

   460                 case opc_fload_0:

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

   462                     break;

   463                 case opc_dload_0:

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

   465                     break;

   466                 case opc_aload_1:

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

   468                     break;

   469                 case opc_iload_1:

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

   471                     break;

   472                 case opc_lload_1:

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

   474                     break;

   475                 case opc_fload_1:

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

   477                     break;

   478                 case opc_dload_1:

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

   480                     break;

   481                 case opc_aload_2:

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

   483                     break;

   484                 case opc_iload_2:

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

   486                     break;

   487                 case opc_lload_2:

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

   489                     break;

   490                 case opc_fload_2:

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

   492                     break;

   493                 case opc_dload_2:

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

   495                     break;

   496                 case opc_aload_3:

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

   498                     break;

   499                 case opc_iload_3:

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

   501                     break;

   502                 case opc_lload_3:

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

   504                     break;

   505                 case opc_fload_3:

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

   507                     break;

   508                 case opc_dload_3:

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

   510                     break;

   511                 case opc_iload: {

   512                     ++i;

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

   514                                           : readUByte(byteCodes, i);

   515                     wide = false;

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

   517                     break;

   518                 }

   519                 case opc_lload: {

   520                     ++i;

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

   522                                           : readUByte(byteCodes, i);

   523                     wide = false;

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

   525                     break;

   526                 }

   527                 case opc_fload: {

   528                     ++i;

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

   530                                           : readUByte(byteCodes, i);

   531                     wide = false;

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

   533                     break;

   534                 }

   535                 case opc_dload: {

   536                     ++i;

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

   538                                           : readUByte(byteCodes, i);

   539                     wide = false;

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

   541                     break;

   542                 }

   543                 case opc_aload: {

   544                     ++i;

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

   546                                           : readUByte(byteCodes, i);

   547                     wide = false;

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

   549                     break;

   550                 }

   551                 case opc_istore: {

   552                     ++i;

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

   554                                           : readUByte(byteCodes, i);

   555                     wide = false;

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

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

   558                     break;

   559                 }

   560                 case opc_lstore: {

   561                     ++i;

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

   563                                           : readUByte(byteCodes, i);

   564                     wide = false;

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

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

   567                     break;

   568                 }

   569                 case opc_fstore: {

   570                     ++i;

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

   572                                           : readUByte(byteCodes, i);

   573                     wide = false;

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

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

   576                     break;

   577                 }

   578                 case opc_dstore: {

   579                     ++i;

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

   581                                           : readUByte(byteCodes, i);

   582                     wide = false;

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

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

   585                     break;

   586                 }

   587                 case opc_astore: {

   588                     ++i;

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

   590                                           : readUByte(byteCodes, i);

   591                     wide = false;

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

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

   594                     break;

   595                 }

   596                 case opc_astore_0:

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

   598                     break;

   599                 case opc_istore_0:

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

   601                     break;

   602                 case opc_lstore_0:

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

   604                     break;

   605                 case opc_fstore_0:

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

   607                     break;

   608                 case opc_dstore_0:

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

   610                     break;

   611                 case opc_astore_1:

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

   613                     break;

   614                 case opc_istore_1:

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

   616                     break;

   617                 case opc_lstore_1:

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

   619                     break;

   620                 case opc_fstore_1:

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

   622                     break;

   623                 case opc_dstore_1:

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

   625                     break;

   626                 case opc_astore_2:

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

   628                     break;

   629                 case opc_istore_2:

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

   631                     break;

   632                 case opc_lstore_2:

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

   634                     break;

   635                 case opc_fstore_2:

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

   637                     break;

   638                 case opc_dstore_2:

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

   640                     break;

   641                 case opc_astore_3:

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

   643                     break;

   644                 case opc_istore_3:

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

   646                     break;

   647                 case opc_lstore_3:

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

   649                     break;

   650                 case opc_fstore_3:

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

   652                     break;

   653                 case opc_dstore_3:

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

   655                     break;

   656                 case opc_iadd:

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

   658                     break;

   659                 case opc_ladd:

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

   661                     break;

   662                 case opc_fadd:

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

   664                     break;

   665                 case opc_dadd:

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

   667                     break;

   668                 case opc_isub:

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

   670                     break;

   671                 case opc_lsub:

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

   673                     break;

   674                 case opc_fsub:

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

   676                     break;

   677                 case opc_dsub:

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

   679                     break;

   680                 case opc_imul:

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

   682                     break;

   683                 case opc_lmul:

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

   685                     break;

   686                 case opc_fmul:

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

   688                     break;

   689                 case opc_dmul:

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

   691                     break;

   692                 case opc_idiv:

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

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

   695                     break;

   696                 case opc_ldiv:

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

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

   699                     break;

   700                 case opc_fdiv:

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

   702                     break;

   703                 case opc_ddiv:

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

   705                     break;

   706                 case opc_irem:

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

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

   709                     break;

   710                 case opc_lrem:

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

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

   713                     break;

   714                 case opc_frem:

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

   716                     break;

   717                 case opc_drem:

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

   719                     break;

   720                 case opc_iand:

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

   722                     break;

   723                 case opc_land:

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

   725                     break;

   726                 case opc_ior:

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

   728                     break;

   729                 case opc_lor:

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

   731                     break;

   732                 case opc_ixor:

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

   734                     break;

   735                 case opc_lxor:

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

   737                     break;

   738                 case opc_ineg:

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

   740                     break;

   741                 case opc_lneg:

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

   743                     break;

   744                 case opc_fneg:

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

   746                     break;

   747                 case opc_dneg:

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

   749                     break;

   750                 case opc_ishl:

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

   752                     break;

   753                 case opc_lshl:

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

   755                     break;

   756                 case opc_ishr:

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

   758                     break;

   759                 case opc_lshr:

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

   761                     break;

   762                 case opc_iushr:

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

   764                     break;

   765                 case opc_lushr:

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

   767                     break;

   768                 case opc_iinc: {

   769                     ++i;

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

   771                                              : readUByte(byteCodes, i);

   772                     ++i;

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

   774                                             : byteCodes[i];

   775                     wide = false;

   776                     if (incrBy == 1) {

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

   778                     } else {

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

   780                              lmapper.getI(varIndx),

   781                              Integer.toString(incrBy));

   782                     }

   783                     break;

   784                 }

   785                 case opc_return:

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

   787                     break;

   788                 case opc_ireturn:

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

   790                     break;

   791                 case opc_lreturn:

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

   793                     break;

   794                 case opc_freturn:

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

   796                     break;

   797                 case opc_dreturn:

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

   799                     break;

   800                 case opc_areturn:

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

   802                     break;

   803                 case opc_i2l:

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

   805                     break;

   806                 case opc_i2f:

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

   808                     break;

   809                 case opc_i2d:

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

   811                     break;

   812                 case opc_l2i:

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

   814                     break;

   815                     // max int check?

   816                 case opc_l2f:

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

   818                     break;

   819                 case opc_l2d:

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

   821                     break;

   822                 case opc_f2d:

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

   824                          smapper.getF(0));

   825                     break;

   826                 case opc_d2f:

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

   828                          smapper.getD(0));

   829                     break;

   830                 case opc_f2i:

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

   832                          smapper.getF(0));

   833                     break;

   834                 case opc_f2l:

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

   836                          smapper.getF(0));

   837                     break;

   838                 case opc_d2i:

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

   840                          smapper.getD(0));

   841                     break;

   842                 case opc_d2l:

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

   844                     break;

   845                 case opc_i2b:

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

   847                     break;

   848                 case opc_i2c:

   849                     break;

   850                 case opc_i2s:

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

   852                     break;

   853                 case opc_aconst_null:

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

   855                     break;

   856                 case opc_iconst_m1:

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

   858                     break;

   859                 case opc_iconst_0:

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

   861                     break;

   862                 case opc_dconst_0:

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

   864                     break;

   865                 case opc_lconst_0:

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

   867                     break;

   868                 case opc_fconst_0:

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

   870                     break;

   871                 case opc_iconst_1:

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

   873                     break;

   874                 case opc_lconst_1:

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

   876                     break;

   877                 case opc_fconst_1:

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

   879                     break;

   880                 case opc_dconst_1:

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

   882                     break;

   883                 case opc_iconst_2:

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

   885                     break;

   886                 case opc_fconst_2:

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

   888                     break;

   889                 case opc_iconst_3:

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

   891                     break;

   892                 case opc_iconst_4:

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

   894                     break;

   895                 case opc_iconst_5:

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

   897                     break;

   898                 case opc_ldc: {

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

   900                     String v = encodeConstant(indx);

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

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

   903                     break;

   904                 }

   905                 case opc_ldc_w:

   906                 case opc_ldc2_w: {

   907                     int indx = readUShortArg(byteCodes, i);

   908                     i += 2;

   909                     String v = encodeConstant(indx);

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

   911                     if (type == VarType.LONG) {

   912                         final Long lv = new Long(v);

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

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

   915                         if (hi == 0) {

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

   917                         } else {

   918                             smapper.assign(this, VarType.LONG,

   919                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   920                                     Integer.toHexString(low) + ")"

   921                             );

   922                         }

   923                     } else {

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

   925                     }

   926                     break;

   927                 }

   928                 case opc_lcmp:

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

   930                     break;

   931                 case opc_fcmpl:

   932                 case opc_fcmpg:

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

   934                     break;

   935                 case opc_dcmpl:

   936                 case opc_dcmpg:

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

   938                     break;

   939                 case opc_if_acmpeq:

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

   941                                    "===", topMostLabel);

   942                     break;

   943                 case opc_if_acmpne:

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

   945                                    "!==", topMostLabel);

   946                     break;

   947                 case opc_if_icmpeq:

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

   949                                    "==", topMostLabel);

   950                     break;

   951                 case opc_ifeq: {

   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_ifne: {

   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_iflt: {

   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_ifle: {

   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_ifgt: {

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

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

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

   983                     i += 2;

   984                     break;

   985                 }

   986                 case opc_ifge: {

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

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

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

   990                     i += 2;

   991                     break;

   992                 }

   993                 case opc_ifnonnull: {

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

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

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

   997                     i += 2;

   998                     break;

   999                 }

  1000                 case opc_ifnull: {

  1001                     int indx = i + readShortArg(byteCodes, i);

  1002                     emitIf(smapper, this, "if ((@1) === null) ",

  1003                          smapper.popA(), i, indx, topMostLabel);

  1004                     i += 2;

  1005                     break;

  1006                 }

  1007                 case opc_if_icmpne:

  1008                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1009                                    "!=", topMostLabel);

  1010                     break;

  1011                 case opc_if_icmplt:

  1012                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1013                                    "<", topMostLabel);

  1014                     break;

  1015                 case opc_if_icmple:

  1016                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1017                                    "<=", topMostLabel);

  1018                     break;

  1019                 case opc_if_icmpgt:

  1020                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1021                                    ">", topMostLabel);

  1022                     break;

  1023                 case opc_if_icmpge:

  1024                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1025                                    ">=", topMostLabel);

  1026                     break;

  1027                 case opc_goto: {

  1028                     smapper.flush(this);

  1029                     int indx = i + readShortArg(byteCodes, i);

  1030                     goTo(this, i, indx, topMostLabel);

  1031                     i += 2;

  1032                     break;

  1033                 }

  1034                 case opc_lookupswitch: {

  1035                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1036                     break;

  1037                 }

  1038                 case opc_tableswitch: {

  1039                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1040                     break;

  1041                 }

  1042                 case opc_invokeinterface: {

  1043                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1044                     break;

  1045                 }

  1046                 case opc_invokevirtual:

  1047                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1048                     break;

  1049                 case opc_invokespecial:

  1050                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1051                     break;

  1052                 case opc_invokestatic:

  1053                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1054                     break;

  1055                 case opc_new: {

  1056                     int indx = readUShortArg(byteCodes, i);

  1057                     String ci = jc.getClassName(indx);

  1058                     emit(smapper, this, "var @1 = new @2;",

  1059                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1060                     addReference(ci);

  1061                     i += 2;

  1062                     break;

  1063                 }

  1064                 case opc_newarray:

  1065                     int atype = readUByte(byteCodes, ++i);

  1066                     generateNewArray(atype, smapper);

  1067                     break;

  1068                 case opc_anewarray: {

  1069                     int type = readUShortArg(byteCodes, i);

  1070                     i += 2;

  1071                     generateANewArray(type, smapper);

  1072                     break;

  1073                 }

  1074                 case opc_multianewarray: {

  1075                     int type = readUShortArg(byteCodes, i);

  1076                     i += 2;

  1077                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1078                     break;

  1079                 }

  1080                 case opc_arraylength:

  1081                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1082                     break;

  1083                 case opc_lastore:

  1084                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1085                          smapper.popL(), smapper.popI(), smapper.popA());

  1086                     break;

  1087                 case opc_fastore:

  1088                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1089                          smapper.popF(), smapper.popI(), smapper.popA());

  1090                     break;

  1091                 case opc_dastore:

  1092                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1093                          smapper.popD(), smapper.popI(), smapper.popA());

  1094                     break;

  1095                 case opc_aastore:

  1096                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1097                          smapper.popA(), smapper.popI(), smapper.popA());

  1098                     break;

  1099                 case opc_iastore:

  1100                 case opc_bastore:

  1101                 case opc_castore:

  1102                 case opc_sastore:

  1103                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1104                          smapper.popI(), smapper.popI(), smapper.popA());

  1105                     break;

  1106                 case opc_laload:

  1107                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1108                          smapper.popI(), smapper.getA(0));

  1109                     break;

  1110                 case opc_faload:

  1111                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1112                          smapper.popI(), smapper.getA(0));

  1113                     break;

  1114                 case opc_daload:

  1115                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1116                          smapper.popI(), smapper.getA(0));

  1117                     break;

  1118                 case opc_aaload:

  1119                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1120                          smapper.popI(), smapper.getA(0));

  1121                     break;

  1122                 case opc_iaload:

  1123                 case opc_baload:

  1124                 case opc_caload:

  1125                 case opc_saload:

  1126                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1127                          smapper.popI(), smapper.getA(0));

  1128                     break;

  1129                 case opc_pop:

  1130                 case opc_pop2:

  1131                     smapper.pop(1);

  1132                     debug("/* pop */");

  1133                     break;

  1134                 case opc_dup: {

  1135                     final Variable v = smapper.get(0);

  1136                     if (smapper.isDirty()) {

  1137                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1138                     } else {

  1139                         smapper.assign(this, v.getType(), v);

  1140                     }

  1141                     break;

  1142                 }

  1143                 case opc_dup2: {

  1144                     final Variable vi1 = smapper.get(0);

  1146                     if (vi1.isCategory2()) {

  1147                         emit(smapper, this, "var @1 = @2;",

  1148                              smapper.pushT(vi1.getType()), vi1);

  1149                     } else {

  1150                         final Variable vi2 = smapper.get(1);

  1151                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1152                              smapper.pushT(vi2.getType()), vi2,

  1153                              smapper.pushT(vi1.getType()), vi1);

  1154                     }

  1155                     break;

  1156                 }

  1157                 case opc_dup_x1: {

  1158                     final Variable vi1 = smapper.pop(this);

  1159                     final Variable vi2 = smapper.pop(this);

  1160                     final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1166                     break;

  1167                 }

  1168                 case opc_dup2_x1: {

  1169                     final Variable vi1 = smapper.pop(this);

  1170                     final Variable vi2 = smapper.pop(this);

  1172                     if (vi1.isCategory2()) {

  1173                         final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1179                     } else {

  1180                         final Variable vi3 = smapper.pop(this);

  1181                         final Variable vo5 = smapper.pushT(vi2.getType());

  1182                         final Variable vo4 = smapper.pushT(vi1.getType());

  1183                         final Variable vo3 = smapper.pushT(vi3.getType());

  1184                         final Variable vo2 = smapper.pushT(vi2.getType());

  1185                         final Variable vo1 = smapper.pushT(vi1.getType());

  1187                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1188                              vo1, vi1, vo2, vi2, vo3, vi3);

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

  1190                              vo4, vo1, vo5, vo2);

  1191                     }

  1192                     break;

  1193                 }

  1194                 case opc_dup_x2: {

  1195                     final Variable vi1 = smapper.pop(this);

  1196                     final Variable vi2 = smapper.pop(this);

  1198                     if (vi2.isCategory2()) {

  1199                         final Variable vo3 = smapper.pushT(vi1.getType());

  1200                         final Variable vo2 = smapper.pushT(vi2.getType());

  1201                         final Variable vo1 = smapper.pushT(vi1.getType());

  1203                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1204                              vo1, vi1, vo2, vi2, vo3, vo1);

  1205                     } else {

  1206                         final Variable vi3 = smapper.pop(this);

  1207                         final Variable vo4 = smapper.pushT(vi1.getType());

  1208                         final Variable vo3 = smapper.pushT(vi3.getType());

  1209                         final Variable vo2 = smapper.pushT(vi2.getType());

  1210                         final Variable vo1 = smapper.pushT(vi1.getType());

  1212                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1213                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1214                     }

  1215                     break;

  1216                 }

  1217                 case opc_dup2_x2: {

  1218                     final Variable vi1 = smapper.pop(this);

  1219                     final Variable vi2 = smapper.pop(this);

  1221                     if (vi1.isCategory2()) {

  1222                         if (vi2.isCategory2()) {

  1223                             final Variable vo3 = smapper.pushT(vi1.getType());

  1224                             final Variable vo2 = smapper.pushT(vi2.getType());

  1225                             final Variable vo1 = smapper.pushT(vi1.getType());

  1227                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1228                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1229                         } else {

  1230                             final Variable vi3 = smapper.pop(this);

  1231                             final Variable vo4 = smapper.pushT(vi1.getType());

  1232                             final Variable vo3 = smapper.pushT(vi3.getType());

  1233                             final Variable vo2 = smapper.pushT(vi2.getType());

  1234                             final Variable vo1 = smapper.pushT(vi1.getType());

  1236                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1237                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1238                         }

  1239                     } else {

  1240                         final Variable vi3 = smapper.pop(this);

  1242                         if (vi3.isCategory2()) {

  1243                             final Variable vo5 = smapper.pushT(vi2.getType());

  1244                             final Variable vo4 = smapper.pushT(vi1.getType());

  1245                             final Variable vo3 = smapper.pushT(vi3.getType());

  1246                             final Variable vo2 = smapper.pushT(vi2.getType());

  1247                             final Variable vo1 = smapper.pushT(vi1.getType());

  1249                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1250                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1251                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1252                                  vo4, vo1, vo5, vo2);

  1253                         } else {

  1254                             final Variable vi4 = smapper.pop(this);

  1255                             final Variable vo6 = smapper.pushT(vi2.getType());

  1256                             final Variable vo5 = smapper.pushT(vi1.getType());

  1257                             final Variable vo4 = smapper.pushT(vi4.getType());

  1258                             final Variable vo3 = smapper.pushT(vi3.getType());

  1259                             final Variable vo2 = smapper.pushT(vi2.getType());

  1260                             final Variable vo1 = smapper.pushT(vi1.getType());

  1262                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1263                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1264                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1265                                  vo5, vo1, vo6, vo2);

  1266                         }

  1267                     }

  1268                     break;

  1269                 }

  1270                 case opc_swap: {

  1271                     final Variable vi1 = smapper.get(0);

  1272                     final Variable vi2 = smapper.get(1);

  1274                     if (vi1.getType() == vi2.getType()) {

  1275                         final Variable tmp = smapper.pushT(vi1.getType());

  1277                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1278                              tmp, vi1, vi2);

  1279                         smapper.pop(1);

  1280                     } else {

  1281                         smapper.pop(2);

  1282                         smapper.pushT(vi1.getType());

  1283                         smapper.pushT(vi2.getType());

  1284                     }

  1285                     break;

  1286                 }

  1287                 case opc_bipush:

  1288                     smapper.assign(this, VarType.INTEGER,

  1289                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1290                     break;

  1291                 case opc_sipush:

  1292                     smapper.assign(this, VarType.INTEGER,

  1293                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1294                     );

  1295                     i += 2;

  1296                     break;

  1297                 case opc_getfield: {

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

  1304                          smapper.getA(0),

  1305                          accessField(mangleClassAccess + "(false)",

  1306                                      "_" + fi[1], fi)

  1307                     );

  1308                     i += 2;

  1309                     break;

  1310                 }

  1311                 case opc_putfield: {

  1312                     int indx = readUShortArg(byteCodes, i);

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

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

  1315                     final String mangleClass = mangleClassName(fi[0]);

  1316                     final String mangleClassAccess = accessClass(mangleClass);

  1317                     emit(smapper, this, "@3.call(@2, @1);",

  1318                          smapper.popT(type),

  1319                          smapper.popA(),

  1320                          accessField(mangleClassAccess + "(false)",

  1321                                      "_" + fi[1], fi));

  1322                     i += 2;

  1323                     break;

  1324                 }

  1325                 case opc_getstatic: {

  1326                     int indx = readUShortArg(byteCodes, i);

  1327                     String[] fi = jc.getFieldInfoName(indx);

  1328                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1329                     String ac = accessClass(mangleClassName(fi[0]));

  1330                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1331                     smapper.assign(this, type, af + "()");

  1332                     i += 2;

  1333                     addReference(fi[0]);

  1334                     break;

  1335                 }

  1336                 case opc_putstatic: {

  1337                     int indx = readUShortArg(byteCodes, i);

  1338                     String[] fi = jc.getFieldInfoName(indx);

  1339                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1340                     emit(smapper, this, "@1(false)._@2(@3);",

  1341                          accessClass(mangleClassName(fi[0])), fi[1],

  1342                          smapper.popT(type));

  1343                     i += 2;

  1344                     addReference(fi[0]);

  1345                     break;

  1346                 }

  1347                 case opc_checkcast: {

  1348                     int indx = readUShortArg(byteCodes, i);

  1349                     generateCheckcast(indx, smapper);

  1350                     i += 2;

  1351                     break;

  1352                 }

  1353                 case opc_instanceof: {

  1354                     int indx = readUShortArg(byteCodes, i);

  1355                     generateInstanceOf(indx, smapper);

  1356                     i += 2;

  1357                     break;

  1358                 }

  1359                 case opc_athrow: {

  1360                     final CharSequence v = smapper.popA();

  1361                     smapper.clear();

  1363                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1364                          smapper.pushA(), v);

  1365                     break;

  1366                 }

  1368                 case opc_monitorenter: {

  1369                     debug("/* monitor enter */");

  1370                     smapper.popA();

  1371                     break;

  1372                 }

  1374                 case opc_monitorexit: {

  1375                     debug("/* monitor exit */");

  1376                     smapper.popA();

  1377                     break;

  1378                 }

  1380                 case opc_wide:

  1381                     wide = true;

  1382                     break;

  1384                 default: {

  1385                     wide = false;

  1386                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1387                          Integer.toString(c));

  1388                 }

  1389             }

  1390             if (debug(" //")) {

  1391                 generateByteCodeComment(prev, i, byteCodes);

  1392             }

  1393             if (outChanged) {

  1394                 append("\n");

  1395             }

  1396         }

  1397         if (previousTrap != null) {

  1398             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1399         }

  1400         if (didBranches) {

  1401             append("\n    }\n");

  1402         }

  1403         while (openBraces-- > 0) {

  1404             append('}');

  1405         }

  1406         if (obj) {

  1407             append("\n}});");

  1408         } else {

  1409             append("\n};");

  1410         }

  1411     }

  1413     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1414         int i, final CharSequence v2, final CharSequence v1,

  1415         final String test, int topMostLabel

  1416     ) throws IOException {

  1417         mapper.flush(this);

  1418         int indx = i + readShortArg(byteCodes, i);

  1419         append("if ((").append(v1)

  1420            .append(") ").append(test).append(" (")

  1421            .append(v2).append(")) ");

  1422         goTo(this, i, indx, topMostLabel);

  1423         return i + 2;

  1424     }

  1426     private int readInt4(byte[] byteCodes, int offset) {

  1427         final int d = byteCodes[offset + 0] << 24;

  1428         final int c = byteCodes[offset + 1] << 16;

  1429         final int b = byteCodes[offset + 2] << 8;

  1430         final int a = byteCodes[offset + 3];

  1431         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1432     }

  1433     private static int readUByte(byte[] byteCodes, int offset) {

  1434         return byteCodes[offset] & 0xff;

  1435     }

  1437     private static int readUShort(byte[] byteCodes, int offset) {

  1438         return ((byteCodes[offset] & 0xff) << 8)

  1439                     | (byteCodes[offset + 1] & 0xff);

  1440     }

  1441     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1442         return readUShort(byteCodes, offsetInstruction + 1);

  1443     }

  1445     private static int readShort(byte[] byteCodes, int offset) {

  1446         int signed = byteCodes[offset];

  1447         byte b0 = (byte)signed;

  1448         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1449     }

  1450     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1451         return readShort(byteCodes, offsetInstruction + 1);

  1452     }

  1454     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1455         int i = 0;

  1456         Boolean count = null;

  1457         boolean array = false;

  1458         sig.append("__");

  1459         int firstPos = sig.length();

  1460         while (i < descriptor.length()) {

  1461             char ch = descriptor.charAt(i++);

  1462             switch (ch) {

  1463                 case '(':

  1464                     count = true;

  1465                     continue;

  1466                 case ')':

  1467                     count = false;

  1468                     continue;

  1469                 case 'B':

  1470                 case 'C':

  1471                 case 'D':

  1472                 case 'F':

  1473                 case 'I':

  1474                 case 'J':

  1475                 case 'S':

  1476                 case 'Z':

  1477                     if (count) {

  1478                         if (array) {

  1479                             sig.append("_3");

  1480                         }

  1481                         sig.append(ch);

  1482                         if (ch == 'J' || ch == 'D') {

  1483                             cnt.append('1');

  1484                         } else {

  1485                             cnt.append('0');

  1486                         }

  1487                     } else {

  1488                         sig.insert(firstPos, ch);

  1489                         if (array) {

  1490                             returnType[0] = '[';

  1491                             sig.insert(firstPos, "_3");

  1492                         } else {

  1493                             returnType[0] = ch;

  1494                         }

  1495                     }

  1496                     array = false;

  1497                     continue;

  1498                 case 'V':

  1499                     assert !count;

  1500                     returnType[0] = 'V';

  1501                     sig.insert(firstPos, 'V');

  1502                     continue;

  1503                 case 'L':

  1504                     int next = descriptor.indexOf(';', i);

  1505                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1506                     if (count) {

  1507                         if (array) {

  1508                             sig.append("_3");

  1509                         }

  1510                         sig.append(realSig);

  1511                         cnt.append('0');

  1512                     } else {

  1513                         sig.insert(firstPos, realSig);

  1514                         if (array) {

  1515                             sig.insert(firstPos, "_3");

  1516                         }

  1517                         returnType[0] = 'L';

  1518                     }

  1519                     i = next + 1;

  1520                     array = false;

  1521                     continue;

  1522                 case '[':

  1523                     array = true;

  1524                     continue;

  1525                 default:

  1526                     throw new IllegalStateException("Invalid char: " + ch);

  1527             }

  1528         }

  1529     }

  1531     static String mangleSig(String sig) {

  1532         return mangleSig(sig, 0, sig.length());

  1533     }

  1535     private static String mangleMethodName(String name) {

  1536         StringBuilder sb = new StringBuilder(name.length() * 2);

  1537         int last = name.length();

  1538         for (int i = 0; i < last; i++) {

  1539             final char ch = name.charAt(i);

  1540             switch (ch) {

  1541                 case '_': sb.append("_1"); break;

  1542                 default: sb.append(ch); break;

  1543             }

  1544         }

  1545         return sb.toString();

  1546     }

  1547     private static String mangleSig(String txt, int first, int last) {

  1548         StringBuilder sb = new StringBuilder((last - first) * 2);

  1549         for (int i = first; i < last; i++) {

  1550             final char ch = txt.charAt(i);

  1551             switch (ch) {

  1552                 case '/': sb.append('_'); break;

  1553                 case '_': sb.append("_1"); break;

  1554                 case ';': sb.append("_2"); break;

  1555                 case '[': sb.append("_3"); break;

  1556                 default:

  1557                     if (Character.isJavaIdentifierPart(ch)) {

  1558                         sb.append(ch);

  1559                     } else {

  1560                         sb.append("_0");

  1561                         String hex = Integer.toHexString(ch).toLowerCase(Locale.ENGLISH);

  1562                         for (int m = hex.length(); m < 4; m++) {

  1563                             sb.append("0");

  1564                         }

  1565                         sb.append(hex);

  1566                     }

  1567                 break;

  1568             }

  1569         }

  1570         return sb.toString();

  1571     }

  1573     private static String mangleClassName(String name) {

  1574         return mangleSig(name);

  1575     }

  1577     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1578         StringBuilder name = new StringBuilder();

  1579         if ("<init>".equals(m.getName())) { // NOI18N

  1580             name.append("cons"); // NOI18N

  1581         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1582             name.append("class"); // NOI18N

  1583         } else {

  1584             name.append(mangleMethodName(m.getName()));

  1585         }

  1587         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1588         return name.toString();

  1589     }

  1591     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1592         StringBuilder name = new StringBuilder();

  1593         String descr = mi[2];//mi.getDescriptor();

  1594         String nm= mi[1];

  1595         if ("<init>".equals(nm)) { // NOI18N

  1596             name.append("cons"); // NOI18N

  1597         } else {

  1598             name.append(mangleMethodName(nm));

  1599         }

  1600         countArgs(descr, returnType, name, cnt);

  1601         return name.toString();

  1602     }

  1604     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1605     throws IOException {

  1606         int methodIndex = readUShortArg(byteCodes, i);

  1607         String[] mi = jc.getFieldInfoName(methodIndex);

  1608         char[] returnType = { 'V' };

  1609         StringBuilder cnt = new StringBuilder();

  1610         String mn = findMethodName(mi, cnt, returnType);

  1612         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1613         final CharSequence[] vars = new CharSequence[numArguments];

  1615         for (int j = numArguments - 1; j >= 0; --j) {

  1616             vars[j] = mapper.popValue();

  1617         }

  1619         if (returnType[0] != 'V') {

  1620             mapper.flush(this);

  1621             append("var ")

  1622                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1623                .append(" = ");

  1624         }

  1626         final String in = mi[0];

  1627         String mcn;

  1628         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1629             mcn = "java_lang_Class";

  1630         } else {

  1631             mcn = mangleClassName(in);

  1632         }

  1633         String object = accessClass(mcn) + "(false)";

  1634         if (mn.startsWith("cons_")) {

  1635             object += ".constructor";

  1636         }

  1637         append(accessStaticMethod(object, mn, mi));

  1638         if (isStatic) {

  1639             append('(');

  1640         } else {

  1641             append(".call(");

  1642         }

  1643         if (numArguments > 0) {

  1644             append(vars[0]);

  1645             for (int j = 1; j < numArguments; ++j) {

  1646                 append(", ");

  1647                 append(vars[j]);

  1648             }

  1649         }

  1650         append(");");

  1651         i += 2;

  1652         addReference(in);

  1653         return i;

  1654     }

  1655     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1656     throws IOException {

  1657         int methodIndex = readUShortArg(byteCodes, i);

  1658         String[] mi = jc.getFieldInfoName(methodIndex);

  1659         char[] returnType = { 'V' };

  1660         StringBuilder cnt = new StringBuilder();

  1661         String mn = findMethodName(mi, cnt, returnType);

  1663         final int numArguments = cnt.length() + 1;

  1664         final CharSequence[] vars = new CharSequence[numArguments];

  1666         for (int j = numArguments - 1; j >= 0; --j) {

  1667             vars[j] = mapper.popValue();

  1668         }

  1670         if (returnType[0] != 'V') {

  1671             append("var ")

  1672                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1673                .append(" = ");

  1674         }

  1676         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1677         String sep = "";

  1678         for (int j = 1; j < numArguments; ++j) {

  1679             append(sep);

  1680             append(vars[j]);

  1681             sep = ", ";

  1682         }

  1683         append(");");

  1684         i += 2;

  1685         return i;

  1686     }

  1688     private void addReference(String cn) throws IOException {

  1689         if (requireReference(cn)) {

  1690             debug(" /* needs " + cn + " */");

  1691         }

  1692     }

  1694     private void outType(String d, StringBuilder out) {

  1695         int arr = 0;

  1696         while (d.charAt(0) == '[') {

  1697             out.append('A');

  1698             d = d.substring(1);

  1699         }

  1700         if (d.charAt(0) == 'L') {

  1701             assert d.charAt(d.length() - 1) == ';';

  1702             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1703         } else {

  1704             out.append(d);

  1705         }

  1706     }

  1708     private String encodeConstant(int entryIndex) throws IOException {

  1709         String[] classRef = { null };

  1710         String s = jc.stringValue(entryIndex, classRef);

  1711         if (classRef[0] != null) {

  1712             if (classRef[0].startsWith("[")) {

  1713                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1714             } else {

  1715                 addReference(classRef[0]);

  1716                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1717             }

  1718         }

  1719         return s;

  1720     }

  1722     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1723         byte[] arr = m.findAnnotationData(true);

  1724         if (arr == null) {

  1725             return null;

  1726         }

  1727         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1728         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1729         class P extends AnnotationParser {

  1730             public P() {

  1731                 super(false, true);

  1732             }

  1734             int cnt;

  1735             String[] args = new String[30];

  1736             String body;

  1737             boolean javacall;

  1738             boolean html4j;

  1740             @Override

  1741             protected void visitAttr(String type, String attr, String at, String value) {

  1742                 if (type.equals(jvmType)) {

  1743                     if ("body".equals(attr)) {

  1744                         body = value;

  1745                     } else if ("args".equals(attr)) {

  1746                         args[cnt++] = value;

  1747                     } else {

  1748                         throw new IllegalArgumentException(attr);

  1749                     }

  1750                 }

  1751                 if (type.equals(htmlType)) {

  1752                     html4j = true;

  1753                     if ("body".equals(attr)) {

  1754                         body = value;

  1755                     } else if ("args".equals(attr)) {

  1756                         args[cnt++] = value;

  1757                     } else if ("javacall".equals(attr)) {

  1758                         javacall = "1".equals(value);

  1759                     } else {

  1760                         throw new IllegalArgumentException(attr);

  1761                     }

  1762                 }

  1763             }

  1764         }

  1765         P p = new P();

  1766         p.parse(arr, jc);

  1767         if (p.body == null) {

  1768             return null;

  1769         }

  1770         StringBuilder cnt = new StringBuilder();

  1771         final String mn = findMethodName(m, cnt);

  1772         append(destObject).append(".").append(mn);

  1773         append(" = function(");

  1774         String space = "";

  1775         int index = 0;

  1776         StringBuilder toValue = new StringBuilder();

  1777         for (int i = 0; i < cnt.length(); i++) {

  1778             append(space);

  1779             space = outputArg(this, p.args, index);

  1780             if (p.html4j && space.length() > 0) {

  1781                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1782                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1783                     append(p.args[index]).append(");");

  1784             }

  1785             index++;

  1786         }

  1787         append(") {").append("\n");

  1788         append(toValue.toString());

  1789         if (p.javacall) {

  1790             int lastSlash = jc.getClassName().lastIndexOf('/');

  1791             final String pkg = jc.getClassName().substring(0, lastSlash);

  1792             append(mangleCallbacks(pkg, p.body));

  1793             requireReference(pkg + "/$JsCallbacks$");

  1794         } else {

  1795             append(p.body);

  1796         }

  1797         append("\n}\n");

  1798         return mn;

  1799     }

  1801     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1802         StringBuilder sb = new StringBuilder();

  1803         int pos = 0;

  1804         for (;;) {

  1805             int next = body.indexOf(".@", pos);

  1806             if (next == -1) {

  1807                 sb.append(body.substring(pos));

  1808                 body = sb.toString();

  1809                 break;

  1810             }

  1811             int ident = next;

  1812             while (ident > 0) {

  1813                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1814                     ident++;

  1815                     break;

  1816                 }

  1817             }

  1818             String refId = body.substring(ident, next);

  1820             sb.append(body.substring(pos, ident));

  1822             int sigBeg = body.indexOf('(', next);

  1823             int sigEnd = body.indexOf(')', sigBeg);

  1824             int colon4 = body.indexOf("::", next);

  1825             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1826                 throw new IllegalStateException("Malformed body " + body);

  1827             }

  1828             String fqn = body.substring(next + 2, colon4);

  1829             String method = body.substring(colon4 + 2, sigBeg);

  1830             String params = body.substring(sigBeg, sigEnd + 1);

  1832             int paramBeg = body.indexOf('(', sigEnd + 1);

  1834             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1835             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1836             sb.append("(").append(refId);

  1837             if (body.charAt(paramBeg + 1) != ')') {

  1838                 sb.append(",");

  1839             }

  1840             pos = paramBeg + 1;

  1841         }

  1842         sb = null;

  1843         pos = 0;

  1844         for (;;) {

  1845             int next = body.indexOf("@", pos);

  1846             if (next == -1) {

  1847                 if (sb == null) {

  1848                     return body;

  1849                 }

  1850                 sb.append(body.substring(pos));

  1851                 return sb;

  1852             }

  1853             if (sb == null) {

  1854                 sb = new StringBuilder();

  1855             }

  1857             sb.append(body.substring(pos, next));

  1859             int sigBeg = body.indexOf('(', next);

  1860             int sigEnd = body.indexOf(')', sigBeg);

  1861             int colon4 = body.indexOf("::", next);

  1862             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1863                 throw new IllegalStateException("Malformed body " + body);

  1864             }

  1865             String fqn = body.substring(next + 1, colon4);

  1866             String method = body.substring(colon4 + 2, sigBeg);

  1867             String params = body.substring(sigBeg, sigEnd + 1);

  1869             int paramBeg = body.indexOf('(', sigEnd + 1);

  1871             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1872             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1873             sb.append("(");

  1874             pos = paramBeg + 1;

  1875         }

  1876     }

  1878     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1879         if (params.startsWith("(")) {

  1880             params = params.substring(1);

  1881         }

  1882         if (params.endsWith(")")) {

  1883             params = params.substring(0, params.length() - 1);

  1884         }

  1885         StringBuilder sb = new StringBuilder();

  1886         final String fqnu = fqn.replace('.', '_');

  1887         final String rfqn = mangleClassName(fqnu);

  1888         final String rm = mangleMethodName(method);

  1889         final String srp;

  1890         {

  1891             StringBuilder pb = new StringBuilder();

  1892             int len = params.length();

  1893             int indx = 0;

  1894             while (indx < len) {

  1895                 char ch = params.charAt(indx);

  1896                 if (ch == '[' || ch == 'L') {

  1897                     pb.append("Ljava/lang/Object;");

  1898                     indx = params.indexOf(';', indx) + 1;

  1899                 } else {

  1900                     pb.append(ch);

  1901                     indx++;

  1902                 }

  1903             }

  1904             srp = mangleSig(pb.toString());

  1905         }

  1906         final String rp = mangleSig(params);

  1907         final String mrp = mangleMethodName(rp);

  1908         sb.append(rfqn).append("$").append(rm).

  1909             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1910         if (!isStatic) {

  1911             sb.append('L').append(fqnu).append("_2");

  1912         }

  1913         sb.append(srp);

  1914         return sb.toString();

  1915     }

  1917     private static String className(ClassData jc) {

  1918         //return jc.getName().getInternalName().replace('/', '_');

  1919         return mangleClassName(jc.getClassName());

  1920     }

  1922     private static String[] findAnnotation(

  1923         byte[] arr, ClassData cd, final String className,

  1924         final String... attrNames

  1925     ) throws IOException {

  1926         if (arr == null) {

  1927             return null;

  1928         }

  1929         final String[] values = new String[attrNames.length];

  1930         final boolean[] found = { false };

  1931         final String jvmType = "L" + className.replace('.', '/') + ";";

  1932         AnnotationParser ap = new AnnotationParser(false, true) {

  1933             @Override

  1934             protected void visitAttr(String type, String attr, String at, String value) {

  1935                 if (type.equals(jvmType)) {

  1936                     found[0] = true;

  1937                     for (int i = 0; i < attrNames.length; i++) {

  1938                         if (attrNames[i].equals(attr)) {

  1939                             values[i] = value;

  1940                         }

  1941                     }

  1942                 }

  1943             }

  1945         };

  1946         ap.parse(arr, cd);

  1947         return found[0] ? values : null;

  1948     }

  1950     private CharSequence initField(FieldData v) {

  1951         final String is = v.getInternalSig();

  1952         if (is.length() == 1) {

  1953             switch (is.charAt(0)) {

  1954                 case 'S':

  1955                 case 'J':

  1956                 case 'B':

  1957                 case 'Z':

  1958                 case 'C':

  1959                 case 'I': return " = 0;";

  1960                 case 'F':

  1961                 case 'D': return " = 0.0;";

  1962                 default:

  1963                     throw new IllegalStateException(is);

  1964             }

  1965         }

  1966         return " = null;";

  1967     }

  1969     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  1970         AnnotationParser ap = new AnnotationParser(true, false) {

  1971             int[] cnt = new int[32];

  1972             int depth;

  1974             @Override

  1975             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1976                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1977                 requireReference(slashType);

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

  1980                     append(",");

  1981                 }

  1982                 if (top) {

  1983                     append('"').append(attrType).append("\" : ");

  1984                 }

  1985                 append("{\n");

  1986                 cnt[++depth] = 0;

  1987             }

  1989             @Override

  1990             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1991                 append("\n}\n");

  1992                 depth--;

  1993             }

  1995             @Override

  1996             protected void visitValueStart(String attrName, char type) throws IOException {

  1997                 if (cnt[depth]++ > 0) {

  1998                     append(",\n");

  1999                 }

  2000                 cnt[++depth] = 0;

  2001                 if (attrName != null) {

  2002                     append('"').append(attrName).append("\" : ");

  2003                 }

  2004                 if (type == '[') {

  2005                     append("[");

  2006                 }

  2007             }

  2009             @Override

  2010             protected void visitValueEnd(String attrName, char type) throws IOException {

  2011                 if (type == '[') {

  2012                     append("]");

  2013                 }

  2014                 depth--;

  2015             }

  2017             @Override

  2018             protected void visitAttr(String type, String attr, String attrType, String value)

  2019             throws IOException {

  2020                 if (attr == null && value == null) {

  2021                     return;

  2022                 }

  2023                 append(value);

  2024             }

  2026             @Override

  2027             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2028             throws IOException {

  2029                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2030                 requireReference(slashType);

  2032                 final String cn = mangleClassName(slashType);

  2033                 append(accessClass(cn))

  2034                    .append("(false)['valueOf__L").

  2035                     append(cn).

  2036                     append("_2Ljava_lang_String_2']('").

  2037                     append(value).

  2038                     append("')");

  2039             }

  2040         };

  2041         ap.parse(data, cd);

  2042     }

  2044     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2045         final String name = args[indx];

  2046         if (name == null) {

  2047             return "";

  2048         }

  2049         if (name.contains(",")) {

  2050             throw new IOException("Wrong parameter with ',': " + name);

  2051         }

  2052         out.append(name);

  2053         return ",";

  2054     }

  2056     final void emitNoFlush(

  2057         StackMapper sm,

  2058         final String format, final CharSequence... params

  2059     ) throws IOException {

  2060         emitImpl(this, format, params);

  2061     }

  2062     static final void emit(

  2063         StackMapper sm,

  2064         final Appendable out,

  2065         final String format, final CharSequence... params

  2066     ) throws IOException {

  2067         sm.flush(out);

  2068         emitImpl(out, format, params);

  2069     }

  2070     static void emitImpl(final Appendable out,

  2071                              final String format,

  2072                              final CharSequence... params) throws IOException {

  2073         final int length = format.length();

  2075         int processed = 0;

  2076         int paramOffset = format.indexOf('@');

  2077         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2078             final char paramChar = format.charAt(paramOffset + 1);

  2079             if ((paramChar >= '1') && (paramChar <= '9')) {

  2080                 final int paramIndex = paramChar - '0' - 1;

  2082                 out.append(format, processed, paramOffset);

  2083                 out.append(params[paramIndex]);

  2085                 ++paramOffset;

  2086                 processed = paramOffset + 1;

  2087             }

  2089             paramOffset = format.indexOf('@', paramOffset + 1);

  2090         }

  2092         out.append(format, processed, length);

  2093     }

  2095     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2096         append("} catch (e) {\n");

  2097         int finallyPC = -1;

  2098         for (TrapData e : traps) {

  2099             if (e == null) {

  2100                 break;

  2101             }

  2102             if (e.catch_cpx != 0) { //not finally

  2103                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2104                 addReference(classInternalName);

  2105                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2106                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2107                 append("var stA0 = e;");

  2108                 goTo(this, current, e.handler_pc, topMostLabel);

  2109                 append("}\n");

  2110             } else {

  2111                 finallyPC = e.handler_pc;

  2112             }

  2113         }

  2114         if (finallyPC == -1) {

  2115             append("throw e;");

  2116         } else {

  2117             append("var stA0 = e;");

  2118             goTo(this, current, finallyPC, topMostLabel);

  2119         }

  2120         append("\n}");

  2121     }

  2123     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2124         if (to < current) {

  2125             if (canBack < to) {

  2126                 out.append("{ gt = 0; continue X_" + to + "; }");

  2127             } else {

  2128                 out.append("{ gt = " + to + "; continue X_0; }");

  2129             }

  2130         } else {

  2131             out.append("{ gt = " + to + "; break IF; }");

  2132         }

  2133     }

  2135     private static void emitIf(

  2136         StackMapper sm,

  2137         Appendable out, String pattern,

  2138         CharSequence param,

  2139         int current, int to, int canBack

  2140     ) throws IOException {

  2141         sm.flush(out);

  2142         emitImpl(out, pattern, param);

  2143         goTo(out, current, to, canBack);

  2144     }

  2146     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2147         String jvmType;

  2148         switch (atype) {

  2149             case 4: jvmType = "[Z"; break;

  2150             case 5: jvmType = "[C"; break;

  2151             case 6: jvmType = "[F"; break;

  2152             case 7: jvmType = "[D"; break;

  2153             case 8: jvmType = "[B"; break;

  2154             case 9: jvmType = "[S"; break;

  2155             case 10: jvmType = "[I"; break;

  2156             case 11: jvmType = "[J"; break;

  2157             default: throw new IllegalStateException("Array type: " + atype);

  2158         }

  2159         emit(smapper, this,

  2160             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2161              smapper.popI(), smapper.pushA(), jvmType);

  2162     }

  2164     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2165         String typeName = jc.getClassName(type);

  2166         String ref = "null";

  2167         if (typeName.startsWith("[")) {

  2168             typeName = "'[" + typeName + "'";

  2169         } else {

  2170             ref = "vm." + mangleClassName(typeName);

  2171             typeName = "'[L" + typeName + ";'";

  2172         }

  2173         emit(smapper, this,

  2174             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2175              smapper.popI(), smapper.pushA(), typeName, ref);

  2176     }

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

  2179         String typeName = jc.getClassName(type);

  2180         int dim = readUByte(byteCodes, ++i);

  2181         StringBuilder dims = new StringBuilder();

  2182         dims.append('[');

  2183         for (int d = 0; d < dim; d++) {

  2184             if (d != 0) {

  2185                 dims.insert(1, ",");

  2186             }

  2187             dims.insert(1, smapper.popI());

  2188         }

  2189         dims.append(']');

  2190         String fn = "null";

  2191         if (typeName.charAt(dim) == 'L') {

  2192             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2193         }

  2194         emit(smapper, this,

  2195             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2196              dims.toString(), smapper.pushA(), typeName, fn

  2197         );

  2198         return i;

  2199     }

  2201     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2202         int table = i / 4 * 4 + 4;

  2203         int dflt = i + readInt4(byteCodes, table);

  2204         table += 4;

  2205         int low = readInt4(byteCodes, table);

  2206         table += 4;

  2207         int high = readInt4(byteCodes, table);

  2208         table += 4;

  2209         final CharSequence swVar = smapper.popValue();

  2210         smapper.flush(this);

  2211         append("switch (").append(swVar).append(") {\n");

  2212         while (low <= high) {

  2213             int offset = i + readInt4(byteCodes, table);

  2214             table += 4;

  2215             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2216             low++;

  2217         }

  2218         append("  default: ");

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

  2220         append("\n}");

  2221         i = table - 1;

  2222         return i;

  2223     }

  2225     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2226         int table = i / 4 * 4 + 4;

  2227         int dflt = i + readInt4(byteCodes, table);

  2228         table += 4;

  2229         int n = readInt4(byteCodes, table);

  2230         table += 4;

  2231         final CharSequence swVar = smapper.popValue();

  2232         smapper.flush(this);

  2233         append("switch (").append(swVar).append(") {\n");

  2234         while (n-- > 0) {

  2235             int cnstnt = readInt4(byteCodes, table);

  2236             table += 4;

  2237             int offset = i + readInt4(byteCodes, table);

  2238             table += 4;

  2239             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2240         }

  2241         append("  default: ");

  2242         goTo(this, i, dflt, topMostLabel);

  2243         append("\n}");

  2244         i = table - 1;

  2245         return i;

  2246     }

  2248     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2249         String type = jc.getClassName(indx);

  2250         if (!type.startsWith("[")) {

  2251             emit(smapper, this,

  2252                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2253                  smapper.popA(), smapper.pushI(),

  2254                  type.replace('/', '_'));

  2255         } else {

  2256             int cnt = 0;

  2257             while (type.charAt(cnt) == '[') {

  2258                 cnt++;

  2259             }

  2260             if (type.charAt(cnt) == 'L') {

  2261                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2262                 emit(smapper, this,

  2263                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2264                     smapper.popA(), smapper.pushI(),

  2265                     type, "" + cnt

  2266                 );

  2267             } else {

  2268                 emit(smapper, this,

  2269                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2270                     smapper.popA(), smapper.pushI(), type

  2271                 );

  2272             }

  2273         }

  2274     }

  2276     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2277         String type = jc.getClassName(indx);

  2278         if (!type.startsWith("[")) {

  2279             emitNoFlush(smapper,

  2280                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2281                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2282         } else {

  2283             int cnt = 0;

  2284             while (type.charAt(cnt) == '[') {

  2285                 cnt++;

  2286             }

  2287             if (type.charAt(cnt) == 'L') {

  2288                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2289                 emitNoFlush(smapper,

  2290                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2291                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2292                 );

  2293             } else {

  2294                 emitNoFlush(smapper,

  2295                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2296                      smapper.getT(0, VarType.REFERENCE, false), type

  2297                 );

  2298             }

  2299         }

  2300     }

  2302     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2303         for (int j = prev; j <= i; j++) {

  2304             append(" ");

  2305             final int cc = readUByte(byteCodes, j);

  2306             append(Integer.toString(cc));

  2307         }

  2308     }

  2309 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 22 Jun 2014 17:19:16 +0200
branch	defprop
changeset 1633	a34e2191b6be
parent 1632	8ac637d7d62a
child 1635	deef1427bbe7
permissions	-rw-r--r--