hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@78485949d340

     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 org.apidesign.bck2brwsr.core.JavaScriptBody;

    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_invokedynamic: {

  1056                     int indx = readUShortArg(byteCodes, i);

  1057                     println("invoke dynamic: " + indx);

  1058                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1059                     println("  bootmethod: " + jc.getBootMethod(c2.cpx1));

  1060                     println("  name and type: " + jc.stringValue(c2.cpx2, true));

  1061                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1;", "" + indx);

  1062                     i += 4;

  1063                     break;

  1064                 }

  1065                 case opc_new: {

  1066                     int indx = readUShortArg(byteCodes, i);

  1067                     String ci = jc.getClassName(indx);

  1068                     emit(smapper, this, "var @1 = new @2;",

  1069                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1070                     addReference(ci);

  1071                     i += 2;

  1072                     break;

  1073                 }

  1074                 case opc_newarray:

  1075                     int atype = readUByte(byteCodes, ++i);

  1076                     generateNewArray(atype, smapper);

  1077                     break;

  1078                 case opc_anewarray: {

  1079                     int type = readUShortArg(byteCodes, i);

  1080                     i += 2;

  1081                     generateANewArray(type, smapper);

  1082                     break;

  1083                 }

  1084                 case opc_multianewarray: {

  1085                     int type = readUShortArg(byteCodes, i);

  1086                     i += 2;

  1087                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1088                     break;

  1089                 }

  1090                 case opc_arraylength:

  1091                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1092                     break;

  1093                 case opc_lastore:

  1094                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1095                          smapper.popL(), smapper.popI(), smapper.popA());

  1096                     break;

  1097                 case opc_fastore:

  1098                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1099                          smapper.popF(), smapper.popI(), smapper.popA());

  1100                     break;

  1101                 case opc_dastore:

  1102                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1103                          smapper.popD(), smapper.popI(), smapper.popA());

  1104                     break;

  1105                 case opc_aastore:

  1106                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1107                          smapper.popA(), smapper.popI(), smapper.popA());

  1108                     break;

  1109                 case opc_iastore:

  1110                 case opc_bastore:

  1111                 case opc_castore:

  1112                 case opc_sastore:

  1113                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1114                          smapper.popI(), smapper.popI(), smapper.popA());

  1115                     break;

  1116                 case opc_laload:

  1117                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1118                          smapper.popI(), smapper.getA(0));

  1119                     break;

  1120                 case opc_faload:

  1121                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1122                          smapper.popI(), smapper.getA(0));

  1123                     break;

  1124                 case opc_daload:

  1125                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1126                          smapper.popI(), smapper.getA(0));

  1127                     break;

  1128                 case opc_aaload:

  1129                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1130                          smapper.popI(), smapper.getA(0));

  1131                     break;

  1132                 case opc_iaload:

  1133                 case opc_baload:

  1134                 case opc_caload:

  1135                 case opc_saload:

  1136                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1137                          smapper.popI(), smapper.getA(0));

  1138                     break;

  1139                 case opc_pop:

  1140                 case opc_pop2:

  1141                     smapper.pop(1);

  1142                     debug("/* pop */");

  1143                     break;

  1144                 case opc_dup: {

  1145                     final Variable v = smapper.get(0);

  1146                     if (smapper.isDirty()) {

  1147                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1148                     } else {

  1149                         smapper.assign(this, v.getType(), v);

  1150                     }

  1151                     break;

  1152                 }

  1153                 case opc_dup2: {

  1154                     final Variable vi1 = smapper.get(0);

  1156                     if (vi1.isCategory2()) {

  1157                         emit(smapper, this, "var @1 = @2;",

  1158                              smapper.pushT(vi1.getType()), vi1);

  1159                     } else {

  1160                         final Variable vi2 = smapper.get(1);

  1161                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1162                              smapper.pushT(vi2.getType()), vi2,

  1163                              smapper.pushT(vi1.getType()), vi1);

  1164                     }

  1165                     break;

  1166                 }

  1167                 case opc_dup_x1: {

  1168                     final Variable vi1 = smapper.pop(this);

  1169                     final Variable vi2 = smapper.pop(this);

  1170                     final Variable vo3 = smapper.pushT(vi1.getType());

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

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

  1174                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1175                          vo1, vi1, vo2, vi2, vo3, vo1);

  1176                     break;

  1177                 }

  1178                 case opc_dup2_x1: {

  1179                     final Variable vi1 = smapper.pop(this);

  1180                     final Variable vi2 = smapper.pop(this);

  1182                     if (vi1.isCategory2()) {

  1183                         final Variable vo3 = smapper.pushT(vi1.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, vo1);

  1189                     } else {

  1190                         final Variable vi3 = smapper.pop(this);

  1191                         final Variable vo5 = smapper.pushT(vi2.getType());

  1192                         final Variable vo4 = smapper.pushT(vi1.getType());

  1193                         final Variable vo3 = smapper.pushT(vi3.getType());

  1194                         final Variable vo2 = smapper.pushT(vi2.getType());

  1195                         final Variable vo1 = smapper.pushT(vi1.getType());

  1197                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1198                              vo1, vi1, vo2, vi2, vo3, vi3);

  1199                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1200                              vo4, vo1, vo5, vo2);

  1201                     }

  1202                     break;

  1203                 }

  1204                 case opc_dup_x2: {

  1205                     final Variable vi1 = smapper.pop(this);

  1206                     final Variable vi2 = smapper.pop(this);

  1208                     if (vi2.isCategory2()) {

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

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

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

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

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

  1215                     } else {

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

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

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

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

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

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

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

  1224                     }

  1225                     break;

  1226                 }

  1227                 case opc_dup2_x2: {

  1228                     final Variable vi1 = smapper.pop(this);

  1229                     final Variable vi2 = smapper.pop(this);

  1231                     if (vi1.isCategory2()) {

  1232                         if (vi2.isCategory2()) {

  1233                             final Variable vo3 = smapper.pushT(vi1.getType());

  1234                             final Variable vo2 = smapper.pushT(vi2.getType());

  1235                             final Variable vo1 = smapper.pushT(vi1.getType());

  1237                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1238                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1239                         } else {

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

  1241                             final Variable vo4 = smapper.pushT(vi1.getType());

  1242                             final Variable vo3 = smapper.pushT(vi3.getType());

  1243                             final Variable vo2 = smapper.pushT(vi2.getType());

  1244                             final Variable vo1 = smapper.pushT(vi1.getType());

  1246                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1247                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1248                         }

  1249                     } else {

  1250                         final Variable vi3 = smapper.pop(this);

  1252                         if (vi3.isCategory2()) {

  1253                             final Variable vo5 = smapper.pushT(vi2.getType());

  1254                             final Variable vo4 = smapper.pushT(vi1.getType());

  1255                             final Variable vo3 = smapper.pushT(vi3.getType());

  1256                             final Variable vo2 = smapper.pushT(vi2.getType());

  1257                             final Variable vo1 = smapper.pushT(vi1.getType());

  1259                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1260                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1261                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1262                                  vo4, vo1, vo5, vo2);

  1263                         } else {

  1264                             final Variable vi4 = smapper.pop(this);

  1265                             final Variable vo6 = smapper.pushT(vi2.getType());

  1266                             final Variable vo5 = smapper.pushT(vi1.getType());

  1267                             final Variable vo4 = smapper.pushT(vi4.getType());

  1268                             final Variable vo3 = smapper.pushT(vi3.getType());

  1269                             final Variable vo2 = smapper.pushT(vi2.getType());

  1270                             final Variable vo1 = smapper.pushT(vi1.getType());

  1272                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1273                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1274                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1275                                  vo5, vo1, vo6, vo2);

  1276                         }

  1277                     }

  1278                     break;

  1279                 }

  1280                 case opc_swap: {

  1281                     final Variable vi1 = smapper.get(0);

  1282                     final Variable vi2 = smapper.get(1);

  1284                     if (vi1.getType() == vi2.getType()) {

  1285                         final Variable tmp = smapper.pushT(vi1.getType());

  1287                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1288                              tmp, vi1, vi2);

  1289                         smapper.pop(1);

  1290                     } else {

  1291                         smapper.pop(2);

  1292                         smapper.pushT(vi1.getType());

  1293                         smapper.pushT(vi2.getType());

  1294                     }

  1295                     break;

  1296                 }

  1297                 case opc_bipush:

  1298                     smapper.assign(this, VarType.INTEGER,

  1299                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1300                     break;

  1301                 case opc_sipush:

  1302                     smapper.assign(this, VarType.INTEGER,

  1303                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1304                     );

  1305                     i += 2;

  1306                     break;

  1307                 case opc_getfield: {

  1308                     int indx = readUShortArg(byteCodes, i);

  1309                     String[] fi = jc.getFieldInfoName(indx);

  1310                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1311                     final String mangleClass = mangleClassName(fi[0]);

  1312                     final String mangleClassAccess = accessClass(mangleClass);

  1313                     smapper.replace(this, type, "@2.call(@1)",

  1314                          smapper.getA(0),

  1315                          accessField(mangleClassAccess + "(false)",

  1316                                      "_" + fi[1], fi)

  1317                     );

  1318                     i += 2;

  1319                     break;

  1320                 }

  1321                 case opc_putfield: {

  1322                     int indx = readUShortArg(byteCodes, i);

  1323                     String[] fi = jc.getFieldInfoName(indx);

  1324                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1325                     final String mangleClass = mangleClassName(fi[0]);

  1326                     final String mangleClassAccess = accessClass(mangleClass);

  1327                     emit(smapper, this, "@3.call(@2, @1);",

  1328                          smapper.popT(type),

  1329                          smapper.popA(),

  1330                          accessField(mangleClassAccess + "(false)",

  1331                                      "_" + fi[1], fi));

  1332                     i += 2;

  1333                     break;

  1334                 }

  1335                 case opc_getstatic: {

  1336                     int indx = readUShortArg(byteCodes, i);

  1337                     String[] fi = jc.getFieldInfoName(indx);

  1338                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1339                     String ac = accessClass(mangleClassName(fi[0]));

  1340                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1341                     smapper.assign(this, type, af + "()");

  1342                     i += 2;

  1343                     addReference(fi[0]);

  1344                     break;

  1345                 }

  1346                 case opc_putstatic: {

  1347                     int indx = readUShortArg(byteCodes, i);

  1348                     String[] fi = jc.getFieldInfoName(indx);

  1349                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1350                     emit(smapper, this, "@1(false)._@2(@3);",

  1351                          accessClass(mangleClassName(fi[0])), fi[1],

  1352                          smapper.popT(type));

  1353                     i += 2;

  1354                     addReference(fi[0]);

  1355                     break;

  1356                 }

  1357                 case opc_checkcast: {

  1358                     int indx = readUShortArg(byteCodes, i);

  1359                     generateCheckcast(indx, smapper);

  1360                     i += 2;

  1361                     break;

  1362                 }

  1363                 case opc_instanceof: {

  1364                     int indx = readUShortArg(byteCodes, i);

  1365                     generateInstanceOf(indx, smapper);

  1366                     i += 2;

  1367                     break;

  1368                 }

  1369                 case opc_athrow: {

  1370                     final CharSequence v = smapper.popA();

  1371                     smapper.clear();

  1373                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1374                          smapper.pushA(), v);

  1375                     break;

  1376                 }

  1378                 case opc_monitorenter: {

  1379                     debug("/* monitor enter */");

  1380                     smapper.popA();

  1381                     break;

  1382                 }

  1384                 case opc_monitorexit: {

  1385                     debug("/* monitor exit */");

  1386                     smapper.popA();

  1387                     break;

  1388                 }

  1390                 case opc_wide:

  1391                     wide = true;

  1392                     break;

  1394                 default: {

  1395                     wide = false;

  1396                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1397                          Integer.toString(c));

  1398                 }

  1399             }

  1400             if (debug(" //")) {

  1401                 generateByteCodeComment(prev, i, byteCodes);

  1402             }

  1403             if (outChanged) {

  1404                 append("\n");

  1405             }

  1406         }

  1407         if (previousTrap != null) {

  1408             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1409         }

  1410         if (didBranches) {

  1411             append("\n    }\n");

  1412         }

  1413         while (openBraces-- > 0) {

  1414             append('}');

  1415         }

  1416         if (obj) {

  1417             append("\n}});");

  1418         } else {

  1419             append("\n};");

  1420         }

  1421     }

  1423     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1424         int i, final CharSequence v2, final CharSequence v1,

  1425         final String test, int topMostLabel

  1426     ) throws IOException {

  1427         mapper.flush(this);

  1428         int indx = i + readShortArg(byteCodes, i);

  1429         append("if ((").append(v1)

  1430            .append(") ").append(test).append(" (")

  1431            .append(v2).append(")) ");

  1432         goTo(this, i, indx, topMostLabel);

  1433         return i + 2;

  1434     }

  1436     private int readInt4(byte[] byteCodes, int offset) {

  1437         final int d = byteCodes[offset + 0] << 24;

  1438         final int c = byteCodes[offset + 1] << 16;

  1439         final int b = byteCodes[offset + 2] << 8;

  1440         final int a = byteCodes[offset + 3];

  1441         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1442     }

  1443     private static int readUByte(byte[] byteCodes, int offset) {

  1444         return byteCodes[offset] & 0xff;

  1445     }

  1447     private static int readUShort(byte[] byteCodes, int offset) {

  1448         return ((byteCodes[offset] & 0xff) << 8)

  1449                     | (byteCodes[offset + 1] & 0xff);

  1450     }

  1451     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1452         return readUShort(byteCodes, offsetInstruction + 1);

  1453     }

  1455     private static int readShort(byte[] byteCodes, int offset) {

  1456         int signed = byteCodes[offset];

  1457         byte b0 = (byte)signed;

  1458         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1459     }

  1460     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1461         return readShort(byteCodes, offsetInstruction + 1);

  1462     }

  1464     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1465         int i = 0;

  1466         Boolean count = null;

  1467         boolean array = false;

  1468         sig.append("__");

  1469         int firstPos = sig.length();

  1470         while (i < descriptor.length()) {

  1471             char ch = descriptor.charAt(i++);

  1472             switch (ch) {

  1473                 case '(':

  1474                     count = true;

  1475                     continue;

  1476                 case ')':

  1477                     count = false;

  1478                     continue;

  1479                 case 'B':

  1480                 case 'C':

  1481                 case 'D':

  1482                 case 'F':

  1483                 case 'I':

  1484                 case 'J':

  1485                 case 'S':

  1486                 case 'Z':

  1487                     if (count) {

  1488                         if (array) {

  1489                             sig.append("_3");

  1490                         }

  1491                         sig.append(ch);

  1492                         if (ch == 'J' || ch == 'D') {

  1493                             cnt.append('1');

  1494                         } else {

  1495                             cnt.append('0');

  1496                         }

  1497                     } else {

  1498                         sig.insert(firstPos, ch);

  1499                         if (array) {

  1500                             returnType[0] = '[';

  1501                             sig.insert(firstPos, "_3");

  1502                         } else {

  1503                             returnType[0] = ch;

  1504                         }

  1505                     }

  1506                     array = false;

  1507                     continue;

  1508                 case 'V':

  1509                     assert !count;

  1510                     returnType[0] = 'V';

  1511                     sig.insert(firstPos, 'V');

  1512                     continue;

  1513                 case 'L':

  1514                     int next = descriptor.indexOf(';', i);

  1515                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1516                     if (count) {

  1517                         if (array) {

  1518                             sig.append("_3");

  1519                         }

  1520                         sig.append(realSig);

  1521                         cnt.append('0');

  1522                     } else {

  1523                         sig.insert(firstPos, realSig);

  1524                         if (array) {

  1525                             sig.insert(firstPos, "_3");

  1526                         }

  1527                         returnType[0] = 'L';

  1528                     }

  1529                     i = next + 1;

  1530                     array = false;

  1531                     continue;

  1532                 case '[':

  1533                     array = true;

  1534                     continue;

  1535                 default:

  1536                     throw new IllegalStateException("Invalid char: " + ch);

  1537             }

  1538         }

  1539     }

  1541     static String mangleSig(String sig) {

  1542         return mangleSig(sig, 0, sig.length());

  1543     }

  1545     private static String mangleMethodName(String name) {

  1546         StringBuilder sb = new StringBuilder(name.length() * 2);

  1547         int last = name.length();

  1548         for (int i = 0; i < last; i++) {

  1549             final char ch = name.charAt(i);

  1550             switch (ch) {

  1551                 case '_': sb.append("_1"); break;

  1552                 default: sb.append(ch); break;

  1553             }

  1554         }

  1555         return sb.toString();

  1556     }

  1557     private static String mangleSig(String txt, int first, int last) {

  1558         StringBuilder sb = new StringBuilder((last - first) * 2);

  1559         for (int i = first; i < last; i++) {

  1560             final char ch = txt.charAt(i);

  1561             switch (ch) {

  1562                 case '/': sb.append('_'); break;

  1563                 case '_': sb.append("_1"); break;

  1564                 case ';': sb.append("_2"); break;

  1565                 case '[': sb.append("_3"); break;

  1566                 default:

  1567                     if (Character.isJavaIdentifierPart(ch)) {

  1568                         sb.append(ch);

  1569                     } else {

  1570                         sb.append("_0");

  1571                         String hex = Integer.toHexString(ch).toLowerCase();

  1572                         for (int m = hex.length(); m < 4; m++) {

  1573                             sb.append("0");

  1574                         }

  1575                         sb.append(hex);

  1576                     }

  1577                 break;

  1578             }

  1579         }

  1580         return sb.toString();

  1581     }

  1583     private static String mangleClassName(String name) {

  1584         return mangleSig(name);

  1585     }

  1587     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1588         StringBuilder name = new StringBuilder();

  1589         if ("<init>".equals(m.getName())) { // NOI18N

  1590             name.append("cons"); // NOI18N

  1591         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1592             name.append("class"); // NOI18N

  1593         } else {

  1594             name.append(mangleMethodName(m.getName()));

  1595         }

  1597         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1598         return name.toString();

  1599     }

  1601     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1602         StringBuilder name = new StringBuilder();

  1603         String descr = mi[2];//mi.getDescriptor();

  1604         String nm= mi[1];

  1605         if ("<init>".equals(nm)) { // NOI18N

  1606             name.append("cons"); // NOI18N

  1607         } else {

  1608             name.append(mangleMethodName(nm));

  1609         }

  1610         countArgs(descr, returnType, name, cnt);

  1611         return name.toString();

  1612     }

  1614     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1615     throws IOException {

  1616         int methodIndex = readUShortArg(byteCodes, i);

  1617         String[] mi = jc.getFieldInfoName(methodIndex);

  1618         char[] returnType = { 'V' };

  1619         StringBuilder cnt = new StringBuilder();

  1620         String mn = findMethodName(mi, cnt, returnType);

  1622         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1623         final CharSequence[] vars = new CharSequence[numArguments];

  1625         for (int j = numArguments - 1; j >= 0; --j) {

  1626             vars[j] = mapper.popValue();

  1627         }

  1629         if (returnType[0] != 'V') {

  1630             mapper.flush(this);

  1631             append("var ")

  1632                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1633                .append(" = ");

  1634         }

  1636         final String in = mi[0];

  1637         String mcn;

  1638         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1639             mcn = "java_lang_Class";

  1640         } else {

  1641             mcn = mangleClassName(in);

  1642         }

  1643         String object = accessClass(mcn) + "(false)";

  1644         if (mn.startsWith("cons_")) {

  1645             object += ".constructor";

  1646         }

  1647         append(accessStaticMethod(object, mn, mi));

  1648         if (isStatic) {

  1649             append('(');

  1650         } else {

  1651             append(".call(");

  1652         }

  1653         if (numArguments > 0) {

  1654             append(vars[0]);

  1655             for (int j = 1; j < numArguments; ++j) {

  1656                 append(", ");

  1657                 append(vars[j]);

  1658             }

  1659         }

  1660         append(");");

  1661         i += 2;

  1662         addReference(in);

  1663         return i;

  1664     }

  1665     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1666     throws IOException {

  1667         int methodIndex = readUShortArg(byteCodes, i);

  1668         String[] mi = jc.getFieldInfoName(methodIndex);

  1669         char[] returnType = { 'V' };

  1670         StringBuilder cnt = new StringBuilder();

  1671         String mn = findMethodName(mi, cnt, returnType);

  1673         final int numArguments = cnt.length() + 1;

  1674         final CharSequence[] vars = new CharSequence[numArguments];

  1676         for (int j = numArguments - 1; j >= 0; --j) {

  1677             vars[j] = mapper.popValue();

  1678         }

  1680         if (returnType[0] != 'V') {

  1681             append("var ")

  1682                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1683                .append(" = ");

  1684         }

  1686         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1687         String sep = "";

  1688         for (int j = 1; j < numArguments; ++j) {

  1689             append(sep);

  1690             append(vars[j]);

  1691             sep = ", ";

  1692         }

  1693         append(");");

  1694         i += 2;

  1695         return i;

  1696     }

  1698     private void addReference(String cn) throws IOException {

  1699         if (requireReference(cn)) {

  1700             debug(" /* needs " + cn + " */");

  1701         }

  1702     }

  1704     private void outType(String d, StringBuilder out) {

  1705         int arr = 0;

  1706         while (d.charAt(0) == '[') {

  1707             out.append('A');

  1708             d = d.substring(1);

  1709         }

  1710         if (d.charAt(0) == 'L') {

  1711             assert d.charAt(d.length() - 1) == ';';

  1712             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1713         } else {

  1714             out.append(d);

  1715         }

  1716     }

  1718     private String encodeConstant(int entryIndex) throws IOException {

  1719         String[] classRef = { null };

  1720         String s = jc.stringValue(entryIndex, classRef);

  1721         if (classRef[0] != null) {

  1722             if (classRef[0].startsWith("[")) {

  1723                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1724             } else {

  1725                 addReference(classRef[0]);

  1726                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1727             }

  1728         }

  1729         return s;

  1730     }

  1732     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1733         byte[] arr = m.findAnnotationData(true);

  1734         if (arr == null) {

  1735             return null;

  1736         }

  1737         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1738         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1739         class P extends AnnotationParser {

  1740             public P() {

  1741                 super(false, true);

  1742             }

  1744             int cnt;

  1745             String[] args = new String[30];

  1746             String body;

  1747             boolean javacall;

  1748             boolean html4j;

  1750             @Override

  1751             protected void visitAttr(String type, String attr, String at, String value) {

  1752                 if (type.equals(jvmType)) {

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

  1754                         body = value;

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

  1756                         args[cnt++] = value;

  1757                     } else {

  1758                         throw new IllegalArgumentException(attr);

  1759                     }

  1760                 }

  1761                 if (type.equals(htmlType)) {

  1762                     html4j = true;

  1763                     if ("body".equals(attr)) {

  1764                         body = value;

  1765                     } else if ("args".equals(attr)) {

  1766                         args[cnt++] = value;

  1767                     } else if ("javacall".equals(attr)) {

  1768                         javacall = "1".equals(value);

  1769                     } else if ("wait4js".equals(attr)) {

  1770                         // ignore, we always invoke synchronously

  1771                     } else {

  1772                         throw new IllegalArgumentException(attr);

  1773                     }

  1774                 }

  1775             }

  1776         }

  1777         P p = new P();

  1778         p.parse(arr, jc);

  1779         if (p.body == null) {

  1780             return null;

  1781         }

  1782         StringBuilder cnt = new StringBuilder();

  1783         final String mn = findMethodName(m, cnt);

  1784         append(destObject).append(".").append(mn);

  1785         append(" = function(");

  1786         String space = "";

  1787         int index = 0;

  1788         StringBuilder toValue = new StringBuilder();

  1789         for (int i = 0; i < cnt.length(); i++) {

  1790             append(space);

  1791             space = outputArg(this, p.args, index);

  1792             if (p.html4j && space.length() > 0) {

  1793                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1794                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1795                     append(p.args[index]).append(");");

  1796             }

  1797             index++;

  1798         }

  1799         append(") {").append("\n");

  1800         append(toValue.toString());

  1801         if (p.javacall) {

  1802             int lastSlash = jc.getClassName().lastIndexOf('/');

  1803             final String pkg = jc.getClassName().substring(0, lastSlash);

  1804             append(mangleCallbacks(pkg, p.body));

  1805             requireReference(pkg + "/$JsCallbacks$");

  1806         } else {

  1807             append(p.body);

  1808         }

  1809         append("\n}\n");

  1810         return mn;

  1811     }

  1813     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1814         StringBuilder sb = new StringBuilder();

  1815         int pos = 0;

  1816         for (;;) {

  1817             int next = body.indexOf(".@", pos);

  1818             if (next == -1) {

  1819                 sb.append(body.substring(pos));

  1820                 body = sb.toString();

  1821                 break;

  1822             }

  1823             int ident = next;

  1824             while (ident > 0) {

  1825                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1826                     ident++;

  1827                     break;

  1828                 }

  1829             }

  1830             String refId = body.substring(ident, next);

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

  1834             int sigBeg = body.indexOf('(', next);

  1835             int sigEnd = body.indexOf(')', sigBeg);

  1836             int colon4 = body.indexOf("::", next);

  1837             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1838                 throw new IllegalStateException("Malformed body " + body);

  1839             }

  1840             String fqn = body.substring(next + 2, colon4);

  1841             String method = body.substring(colon4 + 2, sigBeg);

  1842             String params = body.substring(sigBeg, sigEnd + 1);

  1844             int paramBeg = body.indexOf('(', sigEnd + 1);

  1846             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1847             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1848             sb.append("(").append(refId);

  1849             if (body.charAt(paramBeg + 1) != ')') {

  1850                 sb.append(",");

  1851             }

  1852             pos = paramBeg + 1;

  1853         }

  1854         sb = null;

  1855         pos = 0;

  1856         for (;;) {

  1857             int next = body.indexOf("@", pos);

  1858             if (next == -1) {

  1859                 if (sb == null) {

  1860                     return body;

  1861                 }

  1862                 sb.append(body.substring(pos));

  1863                 return sb;

  1864             }

  1865             if (sb == null) {

  1866                 sb = new StringBuilder();

  1867             }

  1869             sb.append(body.substring(pos, next));

  1871             int sigBeg = body.indexOf('(', next);

  1872             int sigEnd = body.indexOf(')', sigBeg);

  1873             int colon4 = body.indexOf("::", next);

  1874             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1875                 throw new IllegalStateException("Malformed body " + body);

  1876             }

  1877             String fqn = body.substring(next + 1, colon4);

  1878             String method = body.substring(colon4 + 2, sigBeg);

  1879             String params = body.substring(sigBeg, sigEnd + 1);

  1881             int paramBeg = body.indexOf('(', sigEnd + 1);

  1883             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1884             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1885             sb.append("(");

  1886             pos = paramBeg + 1;

  1887         }

  1888     }

  1890     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1891         if (params.startsWith("(")) {

  1892             params = params.substring(1);

  1893         }

  1894         if (params.endsWith(")")) {

  1895             params = params.substring(0, params.length() - 1);

  1896         }

  1897         StringBuilder sb = new StringBuilder();

  1898         final String fqnu = fqn.replace('.', '_');

  1899         final String rfqn = mangleClassName(fqnu);

  1900         final String rm = mangleMethodName(method);

  1901         final String srp;

  1902         {

  1903             StringBuilder pb = new StringBuilder();

  1904             int len = params.length();

  1905             int indx = 0;

  1906             while (indx < len) {

  1907                 char ch = params.charAt(indx);

  1908                 if (ch == '[' || ch == 'L') {

  1909                     pb.append("Ljava/lang/Object;");

  1910                     indx = params.indexOf(';', indx) + 1;

  1911                 } else {

  1912                     pb.append(ch);

  1913                     indx++;

  1914                 }

  1915             }

  1916             srp = mangleSig(pb.toString());

  1917         }

  1918         final String rp = mangleSig(params);

  1919         final String mrp = mangleMethodName(rp);

  1920         sb.append(rfqn).append("$").append(rm).

  1921             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1922         if (!isStatic) {

  1923             sb.append('L').append(fqnu).append("_2");

  1924         }

  1925         sb.append(srp);

  1926         return sb.toString();

  1927     }

  1929     private static String className(ClassData jc) {

  1930         //return jc.getName().getInternalName().replace('/', '_');

  1931         return mangleClassName(jc.getClassName());

  1932     }

  1934     private static String[] findAnnotation(

  1935         byte[] arr, ClassData cd, final String className,

  1936         final String... attrNames

  1937     ) throws IOException {

  1938         if (arr == null) {

  1939             return null;

  1940         }

  1941         final String[] values = new String[attrNames.length];

  1942         final boolean[] found = { false };

  1943         final String jvmType = "L" + className.replace('.', '/') + ";";

  1944         AnnotationParser ap = new AnnotationParser(false, true) {

  1945             @Override

  1946             protected void visitAttr(String type, String attr, String at, String value) {

  1947                 if (type.equals(jvmType)) {

  1948                     found[0] = true;

  1949                     for (int i = 0; i < attrNames.length; i++) {

  1950                         if (attrNames[i].equals(attr)) {

  1951                             values[i] = value;

  1952                         }

  1953                     }

  1954                 }

  1955             }

  1957         };

  1958         ap.parse(arr, cd);

  1959         return found[0] ? values : null;

  1960     }

  1962     private CharSequence initField(FieldData v) {

  1963         final String is = v.getInternalSig();

  1964         if (is.length() == 1) {

  1965             switch (is.charAt(0)) {

  1966                 case 'S':

  1967                 case 'J':

  1968                 case 'B':

  1969                 case 'Z':

  1970                 case 'C':

  1971                 case 'I': return " = 0;";

  1972                 case 'F':

  1973                 case 'D': return " = 0.0;";

  1974                 default:

  1975                     throw new IllegalStateException(is);

  1976             }

  1977         }

  1978         return " = null;";

  1979     }

  1981     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  1982         AnnotationParser ap = new AnnotationParser(true, false) {

  1983             int[] cnt = new int[32];

  1984             int depth;

  1986             @Override

  1987             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1988                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1989                 requireReference(slashType);

  1991                 if (cnt[depth]++ > 0) {

  1992                     append(",");

  1993                 }

  1994                 if (top) {

  1995                     append('"').append(attrType).append("\" : ");

  1996                 }

  1997                 append("{\n");

  1998                 cnt[++depth] = 0;

  1999             }

  2001             @Override

  2002             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2003                 append("\n}\n");

  2004                 depth--;

  2005             }

  2007             @Override

  2008             protected void visitValueStart(String attrName, char type) throws IOException {

  2009                 if (cnt[depth]++ > 0) {

  2010                     append(",\n");

  2011                 }

  2012                 cnt[++depth] = 0;

  2013                 if (attrName != null) {

  2014                     append('"').append(attrName).append("\" : ");

  2015                 }

  2016                 if (type == '[') {

  2017                     append("[");

  2018                 }

  2019             }

  2021             @Override

  2022             protected void visitValueEnd(String attrName, char type) throws IOException {

  2023                 if (type == '[') {

  2024                     append("]");

  2025                 }

  2026                 depth--;

  2027             }

  2029             @Override

  2030             protected void visitAttr(String type, String attr, String attrType, String value)

  2031             throws IOException {

  2032                 if (attr == null && value == null) {

  2033                     return;

  2034                 }

  2035                 append(value);

  2036             }

  2038             @Override

  2039             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2040             throws IOException {

  2041                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2042                 requireReference(slashType);

  2044                 final String cn = mangleClassName(slashType);

  2045                 append(accessClass(cn))

  2046                    .append("(false)['valueOf__L").

  2047                     append(cn).

  2048                     append("_2Ljava_lang_String_2']('").

  2049                     append(value).

  2050                     append("')");

  2051             }

  2052         };

  2053         ap.parse(data, cd);

  2054     }

  2056     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2057         final String name = args[indx];

  2058         if (name == null) {

  2059             return "";

  2060         }

  2061         if (name.contains(",")) {

  2062             throw new IOException("Wrong parameter with ',': " + name);

  2063         }

  2064         out.append(name);

  2065         return ",";

  2066     }

  2068     final void emitNoFlush(

  2069         StackMapper sm,

  2070         final String format, final CharSequence... params

  2071     ) throws IOException {

  2072         emitImpl(this, format, params);

  2073     }

  2074     static final void emit(

  2075         StackMapper sm,

  2076         final Appendable out,

  2077         final String format, final CharSequence... params

  2078     ) throws IOException {

  2079         sm.flush(out);

  2080         emitImpl(out, format, params);

  2081     }

  2082     static void emitImpl(final Appendable out,

  2083                              final String format,

  2084                              final CharSequence... params) throws IOException {

  2085         final int length = format.length();

  2087         int processed = 0;

  2088         int paramOffset = format.indexOf('@');

  2089         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2090             final char paramChar = format.charAt(paramOffset + 1);

  2091             if ((paramChar >= '1') && (paramChar <= '9')) {

  2092                 final int paramIndex = paramChar - '0' - 1;

  2094                 out.append(format, processed, paramOffset);

  2095                 out.append(params[paramIndex]);

  2097                 ++paramOffset;

  2098                 processed = paramOffset + 1;

  2099             }

  2101             paramOffset = format.indexOf('@', paramOffset + 1);

  2102         }

  2104         out.append(format, processed, length);

  2105     }

  2107     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2108         append("} catch (e) {\n");

  2109         int finallyPC = -1;

  2110         for (TrapData e : traps) {

  2111             if (e == null) {

  2112                 break;

  2113             }

  2114             if (e.catch_cpx != 0) { //not finally

  2115                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2116                 addReference(classInternalName);

  2117                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2118                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2119                 append("var stA0 = e;");

  2120                 goTo(this, current, e.handler_pc, topMostLabel);

  2121                 append("}\n");

  2122             } else {

  2123                 finallyPC = e.handler_pc;

  2124             }

  2125         }

  2126         if (finallyPC == -1) {

  2127             append("throw e;");

  2128         } else {

  2129             append("var stA0 = e;");

  2130             goTo(this, current, finallyPC, topMostLabel);

  2131         }

  2132         append("\n}");

  2133     }

  2135     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2136         if (to < current) {

  2137             if (canBack < to) {

  2138                 out.append("{ gt = 0; continue X_" + to + "; }");

  2139             } else {

  2140                 out.append("{ gt = " + to + "; continue X_0; }");

  2141             }

  2142         } else {

  2143             out.append("{ gt = " + to + "; break IF; }");

  2144         }

  2145     }

  2147     private static void emitIf(

  2148         StackMapper sm,

  2149         Appendable out, String pattern,

  2150         CharSequence param,

  2151         int current, int to, int canBack

  2152     ) throws IOException {

  2153         sm.flush(out);

  2154         emitImpl(out, pattern, param);

  2155         goTo(out, current, to, canBack);

  2156     }

  2158     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2159         String jvmType;

  2160         switch (atype) {

  2161             case 4: jvmType = "[Z"; break;

  2162             case 5: jvmType = "[C"; break;

  2163             case 6: jvmType = "[F"; break;

  2164             case 7: jvmType = "[D"; break;

  2165             case 8: jvmType = "[B"; break;

  2166             case 9: jvmType = "[S"; break;

  2167             case 10: jvmType = "[I"; break;

  2168             case 11: jvmType = "[J"; break;

  2169             default: throw new IllegalStateException("Array type: " + atype);

  2170         }

  2171         emit(smapper, this,

  2172             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2173              smapper.popI(), smapper.pushA(), jvmType);

  2174     }

  2176     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2177         String typeName = jc.getClassName(type);

  2178         String ref = "null";

  2179         if (typeName.startsWith("[")) {

  2180             typeName = "'[" + typeName + "'";

  2181         } else {

  2182             ref = "vm." + mangleClassName(typeName);

  2183             typeName = "'[L" + typeName + ";'";

  2184         }

  2185         emit(smapper, this,

  2186             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2187              smapper.popI(), smapper.pushA(), typeName, ref);

  2188     }

  2190     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2191         String typeName = jc.getClassName(type);

  2192         int dim = readUByte(byteCodes, ++i);

  2193         StringBuilder dims = new StringBuilder();

  2194         dims.append('[');

  2195         for (int d = 0; d < dim; d++) {

  2196             if (d != 0) {

  2197                 dims.insert(1, ",");

  2198             }

  2199             dims.insert(1, smapper.popI());

  2200         }

  2201         dims.append(']');

  2202         String fn = "null";

  2203         if (typeName.charAt(dim) == 'L') {

  2204             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2205         }

  2206         emit(smapper, this,

  2207             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2208              dims.toString(), smapper.pushA(), typeName, fn

  2209         );

  2210         return i;

  2211     }

  2213     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2214         int table = i / 4 * 4 + 4;

  2215         int dflt = i + readInt4(byteCodes, table);

  2216         table += 4;

  2217         int low = readInt4(byteCodes, table);

  2218         table += 4;

  2219         int high = readInt4(byteCodes, table);

  2220         table += 4;

  2221         final CharSequence swVar = smapper.popValue();

  2222         smapper.flush(this);

  2223         append("switch (").append(swVar).append(") {\n");

  2224         while (low <= high) {

  2225             int offset = i + readInt4(byteCodes, table);

  2226             table += 4;

  2227             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2228             low++;

  2229         }

  2230         append("  default: ");

  2231         goTo(this, i, dflt, topMostLabel);

  2232         append("\n}");

  2233         i = table - 1;

  2234         return i;

  2235     }

  2237     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2238         int table = i / 4 * 4 + 4;

  2239         int dflt = i + readInt4(byteCodes, table);

  2240         table += 4;

  2241         int n = readInt4(byteCodes, table);

  2242         table += 4;

  2243         final CharSequence swVar = smapper.popValue();

  2244         smapper.flush(this);

  2245         append("switch (").append(swVar).append(") {\n");

  2246         while (n-- > 0) {

  2247             int cnstnt = readInt4(byteCodes, table);

  2248             table += 4;

  2249             int offset = i + readInt4(byteCodes, table);

  2250             table += 4;

  2251             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2252         }

  2253         append("  default: ");

  2254         goTo(this, i, dflt, topMostLabel);

  2255         append("\n}");

  2256         i = table - 1;

  2257         return i;

  2258     }

  2260     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2261         String type = jc.getClassName(indx);

  2262         if (!type.startsWith("[")) {

  2263             emit(smapper, this,

  2264                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2265                  smapper.popA(), smapper.pushI(),

  2266                  type.replace('/', '_'));

  2267         } else {

  2268             int cnt = 0;

  2269             while (type.charAt(cnt) == '[') {

  2270                 cnt++;

  2271             }

  2272             if (type.charAt(cnt) == 'L') {

  2273                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2274                 emit(smapper, this,

  2275                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2276                     smapper.popA(), smapper.pushI(),

  2277                     type, "" + cnt

  2278                 );

  2279             } else {

  2280                 emit(smapper, this,

  2281                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2282                     smapper.popA(), smapper.pushI(), type

  2283                 );

  2284             }

  2285         }

  2286     }

  2288     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2289         String type = jc.getClassName(indx);

  2290         if (!type.startsWith("[")) {

  2291             emitNoFlush(smapper,

  2292                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2293                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2294         } else {

  2295             int cnt = 0;

  2296             while (type.charAt(cnt) == '[') {

  2297                 cnt++;

  2298             }

  2299             if (type.charAt(cnt) == 'L') {

  2300                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2301                 emitNoFlush(smapper,

  2302                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2303                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2304                 );

  2305             } else {

  2306                 emitNoFlush(smapper,

  2307                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2308                      smapper.getT(0, VarType.REFERENCE, false), type

  2309                 );

  2310             }

  2311         }

  2312     }

  2314     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2315         for (int j = prev; j <= i; j++) {

  2316             append(" ");

  2317             final int cc = readUByte(byteCodes, j);

  2318             append(Integer.toString(cc));

  2319         }

  2320     }

  2322     @JavaScriptBody(args = "msg", body = "")

  2323     private static void println(String msg) {

  2324         System.err.println(msg);

  2325     }

  2326 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 10 Aug 2014 07:52:49 +0200
branch	jdk8
changeset 1655	78485949d340
parent 1642	c178e0bdce5d
child 1657	c90c5a9b1900
permissions	-rw-r--r--