hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@8ac637d7d62a

     1 /**

     2  * Back 2 Browser Bytecode Translator

     3  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

     4  *

     5  * This program is free software: you can redistribute it and/or modify

     6  * it under the terms of the GNU General Public License as published by

     7  * the Free Software Foundation, version 2 of the License.

     8  *

     9  * This program is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12  * GNU General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU General Public License

    15  * along with this program. Look for COPYING file in the top folder.

    16  * If not, see http://opensource.org/licenses/GPL-2.0.

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

    22 import java.util.Locale;

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

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

    26  *

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

    28  */

    29 abstract class ByteCodeToJavaScript implements Appendable {

    30     private ClassData jc;

    31     private final Appendable out;

    32     private boolean outChanged;

    33     private boolean callbacks;

    35     protected ByteCodeToJavaScript(Appendable out) {

    36         this.out = out;

    37     }

    39     @Override

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

    41         out.append(csq);

    42         outChanged = true;

    43         return this;

    44     }

    46     @Override

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

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

    49         outChanged = true;

    50         return this;

    51     }

    53     @Override

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

    55         out.append(c);

    56         outChanged = true;

    57         return this;

    58     }

    60     /* Collects additional required resources.

    61      *

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

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

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

    65      */

    66     protected abstract boolean requireReference(String internalClassName);

    68     /*

    69      * @param resourcePath name of resources to read

    70      */

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

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

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

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

    76      *

    77      * @param className suggested name of the class

    78      */

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

    80         return className + " = ";

    81     }

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

    83         return classOperation;

    84     }

    86     protected String accessField(String object, String mangledName,

    87                                  String[] fieldInfoName) throws IOException {

    88         return object + "." + mangledName;

    89     }

    91     protected String accessStaticMethod(

    92                              String object,

    93                              String mangledName,

    94                              String[] fieldInfoName) throws IOException {

    95         return object + "." + mangledName;

    96     }

    98     protected String accessVirtualMethod(

    99             String object,

   100             String mangledName,

   101             String[] fieldInfoName,

   102             int params

   103     ) throws IOException {

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

   105     }

   107     protected void declaredClass(ClassData classData, String mangledName)

   108             throws IOException {

   109     }

   111     protected void declaredField(FieldData fieldData,

   112                                  String destObject,

   113                                  String mangledName) throws IOException {

   114     }

   116     protected void declaredMethod(MethodData methodData,

   117                                   String destObject,

   118                                   String mangledName) throws IOException {

   119     }

   121     /** Prints out a debug message.

   122      *

   123      * @param msg the message

   124      * @return true if the message has been printed

   125      * @throws IOException

   126      */

   127     boolean debug(String msg) throws IOException {

   128         append(msg);

   129         return true;

   130     }

   132     /**

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

   134      *

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

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

   137      *

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

   139      */

   141     public String compile(InputStream classFile) throws IOException {

   142         return compile(new ClassData(classFile));

   143     }

   145     protected String compile(ClassData classData) throws IOException {

   146         this.jc = classData;

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

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

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

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

   151             );

   152         }

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

   154         {

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

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

   157                 "resource", "processByteCode"

   158             );

   159             if (arr != null) {

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

   161                     requireScript(arr[0]);

   162                 }

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

   164                     return null;

   165                 }

   166             }

   167         }

   168         {

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

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

   171                 "value"

   172             );

   173             if (arr != null) {

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

   175                     requireScript(arr[0]);

   176                 } else {

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

   178                     requireScript(

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

   180                     );

   181                 }

   182             }

   183         }

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

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

   186             "container", "prototype"

   187         );

   188         StringArray toInitilize = new StringArray();

   189         final String className = className(jc);

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

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

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

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

   194         if (proto == null) {

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

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

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

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

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

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

   201         } else {

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

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

   204                 proto[0] = "p";

   205             }

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

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

   208         }

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

   210             if (v.isStatic()) {

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

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

   213                         continue;

   214                     }

   215                 }

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

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

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

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

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

   221             } else {

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

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

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

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

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

   227                    .append("; };");

   228             }

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

   231         }

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

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

   234             if (javaScriptOnly(onlyArr)) continue;

   235             String destObject;

   236             String mn;

   237             append("\n    ");

   238             if (m.isStatic()) {

   239                 destObject = "c";

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

   241             } else {

   242                 if (m.isConstructor()) {

   243                     destObject = "CLS";

   244                     mn = generateInstanceMethod(destObject, m);

   245                 } else {

   246                     destObject = "c";

   247                     mn = generateInstanceMethod(destObject, m);

   248                 }

   249             }

   250             declaredMethod(m, destObject, mn);

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

   252             if (runAnno != null) {

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

   254                 generateAnno(jc, runAnno);

   255                 append("\n    };");

   256             }

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

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

   259         }

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

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

   262         String instOfName = "$instOf_" + className;

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

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

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

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

   267             requireReference(superInterface);

   268         }

   269         append("\n    }");

   270         append("\n    try {");

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

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

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

   274         append("\n    }");

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

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

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

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

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

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

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

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

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

   284         if (classAnno != null) {

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

   286             generateAnno(jc, classAnno);

   287             append("\n    };");

   288         }

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

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

   291         }

   292         append("\n  }");

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

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

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

   296         append("\n    }");

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

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

   299             if (javaScriptOnly(onlyArr)) continue;

   300             if (!v.isStatic()) {

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

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

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

   304             }

   305         }

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

   307         append("\n  }");

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

   309         append("\n};");

   311         declaredClass(jc, className);

   313 //        StringBuilder sb = new StringBuilder();

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

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

   316 //        }

   317         return "";

   318     }

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

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

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

   323             "name", "value"

   324         );

   325         if (only != null) {

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

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

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

   329             }

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

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

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

   333             }

   334             return true;

   335         }

   336         return false;

   337     }

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

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

   340         if (jsb != null) {

   341             return jsb;

   342         }

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

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

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

   346         }

   347         generateMethod(destObject, mn, m);

   348         return mn;

   349     }

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

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

   353         if (jsb != null) {

   354             return jsb;

   355         }

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

   357         generateMethod(destObject, mn, m);

   358         return mn;

   359     }

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

   362             throws IOException {

   363         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   364         TrapDataIterator trap = m.getTrapDataIterator();

   365         final LocalsMapper lmapper =

   366                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   373         if (byteCodes == null) {

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

   375                .append(jc.getClassName()).append('.')

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

   377             append("};");

   378             return;

   379         }

   381         final StackMapper smapper = new StackMapper();

   383         if (!m.isStatic()) {

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

   385         }

   387         int lastStackFrame;

   388         TrapData[] previousTrap = null;

   389         boolean wide = false;

   390         boolean didBranches;

   391         if (stackMapIterator.isEmpty()) {

   392             didBranches = false;

   393             lastStackFrame = 0;

   394         } else {

   395             didBranches = true;

   396             lastStackFrame = -1;

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

   398         }

   400         int openBraces = 0;

   401         int topMostLabel = 0;

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

   403             int prev = i;

   404             outChanged = false;

   405             stackMapIterator.advanceTo(i);

   406             boolean changeInCatch = trap.advanceTo(i);

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

   408                 if (previousTrap != null) {

   409                     generateCatch(previousTrap, i, topMostLabel);

   410                     previousTrap = null;

   411                 }

   412             }

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

   414                 smapper.flush(this);

   415                 if (i != 0) {

   416                     append("    }\n");

   417                 }

   418                 if (openBraces > 64) {

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

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

   421                     }

   422                     openBraces = 1;

   423                     topMostLabel = i;

   424                 }

   426                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   430                 openBraces++;

   431                 changeInCatch = true;

   432             } else {

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

   434             }

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

   436                 append("try {");

   437                 previousTrap = trap.current();

   438             }

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

   440             switch (c) {

   441                 case opc_aload_0:

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

   443                     break;

   444                 case opc_iload_0:

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

   446                     break;

   447                 case opc_lload_0:

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

   449                     break;

   450                 case opc_fload_0:

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

   452                     break;

   453                 case opc_dload_0:

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

   455                     break;

   456                 case opc_aload_1:

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

   458                     break;

   459                 case opc_iload_1:

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

   461                     break;

   462                 case opc_lload_1:

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

   464                     break;

   465                 case opc_fload_1:

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

   467                     break;

   468                 case opc_dload_1:

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

   470                     break;

   471                 case opc_aload_2:

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

   473                     break;

   474                 case opc_iload_2:

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

   476                     break;

   477                 case opc_lload_2:

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

   479                     break;

   480                 case opc_fload_2:

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

   482                     break;

   483                 case opc_dload_2:

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

   485                     break;

   486                 case opc_aload_3:

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

   488                     break;

   489                 case opc_iload_3:

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

   491                     break;

   492                 case opc_lload_3:

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

   494                     break;

   495                 case opc_fload_3:

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

   497                     break;

   498                 case opc_dload_3:

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

   500                     break;

   501                 case opc_iload: {

   502                     ++i;

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

   504                                           : readUByte(byteCodes, i);

   505                     wide = false;

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

   507                     break;

   508                 }

   509                 case opc_lload: {

   510                     ++i;

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

   512                                           : readUByte(byteCodes, i);

   513                     wide = false;

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

   515                     break;

   516                 }

   517                 case opc_fload: {

   518                     ++i;

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

   520                                           : readUByte(byteCodes, i);

   521                     wide = false;

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

   523                     break;

   524                 }

   525                 case opc_dload: {

   526                     ++i;

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

   528                                           : readUByte(byteCodes, i);

   529                     wide = false;

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

   531                     break;

   532                 }

   533                 case opc_aload: {

   534                     ++i;

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

   536                                           : readUByte(byteCodes, i);

   537                     wide = false;

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

   539                     break;

   540                 }

   541                 case opc_istore: {

   542                     ++i;

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

   544                                           : readUByte(byteCodes, i);

   545                     wide = false;

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

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

   548                     break;

   549                 }

   550                 case opc_lstore: {

   551                     ++i;

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

   553                                           : readUByte(byteCodes, i);

   554                     wide = false;

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

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

   557                     break;

   558                 }

   559                 case opc_fstore: {

   560                     ++i;

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

   562                                           : readUByte(byteCodes, i);

   563                     wide = false;

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

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

   566                     break;

   567                 }

   568                 case opc_dstore: {

   569                     ++i;

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

   571                                           : readUByte(byteCodes, i);

   572                     wide = false;

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

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

   575                     break;

   576                 }

   577                 case opc_astore: {

   578                     ++i;

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

   580                                           : readUByte(byteCodes, i);

   581                     wide = false;

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

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

   584                     break;

   585                 }

   586                 case opc_astore_0:

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

   588                     break;

   589                 case opc_istore_0:

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

   591                     break;

   592                 case opc_lstore_0:

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

   594                     break;

   595                 case opc_fstore_0:

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

   597                     break;

   598                 case opc_dstore_0:

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

   600                     break;

   601                 case opc_astore_1:

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

   603                     break;

   604                 case opc_istore_1:

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

   606                     break;

   607                 case opc_lstore_1:

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

   609                     break;

   610                 case opc_fstore_1:

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

   612                     break;

   613                 case opc_dstore_1:

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

   615                     break;

   616                 case opc_astore_2:

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

   618                     break;

   619                 case opc_istore_2:

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

   621                     break;

   622                 case opc_lstore_2:

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

   624                     break;

   625                 case opc_fstore_2:

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

   627                     break;

   628                 case opc_dstore_2:

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

   630                     break;

   631                 case opc_astore_3:

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

   633                     break;

   634                 case opc_istore_3:

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

   636                     break;

   637                 case opc_lstore_3:

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

   639                     break;

   640                 case opc_fstore_3:

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

   642                     break;

   643                 case opc_dstore_3:

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

   645                     break;

   646                 case opc_iadd:

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

   648                     break;

   649                 case opc_ladd:

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

   651                     break;

   652                 case opc_fadd:

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

   654                     break;

   655                 case opc_dadd:

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

   657                     break;

   658                 case opc_isub:

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

   660                     break;

   661                 case opc_lsub:

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

   663                     break;

   664                 case opc_fsub:

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

   666                     break;

   667                 case opc_dsub:

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

   669                     break;

   670                 case opc_imul:

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

   672                     break;

   673                 case opc_lmul:

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

   675                     break;

   676                 case opc_fmul:

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

   678                     break;

   679                 case opc_dmul:

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

   681                     break;

   682                 case opc_idiv:

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

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

   685                     break;

   686                 case opc_ldiv:

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

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

   689                     break;

   690                 case opc_fdiv:

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

   692                     break;

   693                 case opc_ddiv:

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

   695                     break;

   696                 case opc_irem:

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

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

   699                     break;

   700                 case opc_lrem:

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

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

   703                     break;

   704                 case opc_frem:

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

   706                     break;

   707                 case opc_drem:

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

   709                     break;

   710                 case opc_iand:

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

   712                     break;

   713                 case opc_land:

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

   715                     break;

   716                 case opc_ior:

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

   718                     break;

   719                 case opc_lor:

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

   721                     break;

   722                 case opc_ixor:

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

   724                     break;

   725                 case opc_lxor:

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

   727                     break;

   728                 case opc_ineg:

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

   730                     break;

   731                 case opc_lneg:

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

   733                     break;

   734                 case opc_fneg:

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

   736                     break;

   737                 case opc_dneg:

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

   739                     break;

   740                 case opc_ishl:

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

   742                     break;

   743                 case opc_lshl:

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

   745                     break;

   746                 case opc_ishr:

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

   748                     break;

   749                 case opc_lshr:

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

   751                     break;

   752                 case opc_iushr:

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

   754                     break;

   755                 case opc_lushr:

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

   757                     break;

   758                 case opc_iinc: {

   759                     ++i;

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

   761                                              : readUByte(byteCodes, i);

   762                     ++i;

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

   764                                             : byteCodes[i];

   765                     wide = false;

   766                     if (incrBy == 1) {

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

   768                     } else {

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

   770                              lmapper.getI(varIndx),

   771                              Integer.toString(incrBy));

   772                     }

   773                     break;

   774                 }

   775                 case opc_return:

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

   777                     break;

   778                 case opc_ireturn:

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

   780                     break;

   781                 case opc_lreturn:

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

   783                     break;

   784                 case opc_freturn:

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

   786                     break;

   787                 case opc_dreturn:

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

   789                     break;

   790                 case opc_areturn:

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

   792                     break;

   793                 case opc_i2l:

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

   795                     break;

   796                 case opc_i2f:

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

   798                     break;

   799                 case opc_i2d:

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

   801                     break;

   802                 case opc_l2i:

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

   804                     break;

   805                     // max int check?

   806                 case opc_l2f:

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

   808                     break;

   809                 case opc_l2d:

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

   811                     break;

   812                 case opc_f2d:

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

   814                          smapper.getF(0));

   815                     break;

   816                 case opc_d2f:

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

   818                          smapper.getD(0));

   819                     break;

   820                 case opc_f2i:

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

   822                          smapper.getF(0));

   823                     break;

   824                 case opc_f2l:

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

   826                          smapper.getF(0));

   827                     break;

   828                 case opc_d2i:

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

   830                          smapper.getD(0));

   831                     break;

   832                 case opc_d2l:

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

   834                     break;

   835                 case opc_i2b:

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

   837                     break;

   838                 case opc_i2c:

   839                     break;

   840                 case opc_i2s:

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

   842                     break;

   843                 case opc_aconst_null:

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

   845                     break;

   846                 case opc_iconst_m1:

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

   848                     break;

   849                 case opc_iconst_0:

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

   851                     break;

   852                 case opc_dconst_0:

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

   854                     break;

   855                 case opc_lconst_0:

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

   857                     break;

   858                 case opc_fconst_0:

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

   860                     break;

   861                 case opc_iconst_1:

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

   863                     break;

   864                 case opc_lconst_1:

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

   866                     break;

   867                 case opc_fconst_1:

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

   869                     break;

   870                 case opc_dconst_1:

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

   872                     break;

   873                 case opc_iconst_2:

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

   875                     break;

   876                 case opc_fconst_2:

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

   878                     break;

   879                 case opc_iconst_3:

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

   881                     break;

   882                 case opc_iconst_4:

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

   884                     break;

   885                 case opc_iconst_5:

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

   887                     break;

   888                 case opc_ldc: {

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

   890                     String v = encodeConstant(indx);

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

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

   893                     break;

   894                 }

   895                 case opc_ldc_w:

   896                 case opc_ldc2_w: {

   897                     int indx = readUShortArg(byteCodes, i);

   898                     i += 2;

   899                     String v = encodeConstant(indx);

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

   901                     if (type == VarType.LONG) {

   902                         final Long lv = new Long(v);

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

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

   905                         if (hi == 0) {

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

   907                         } else {

   908                             smapper.assign(this, VarType.LONG,

   909                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   910                                     Integer.toHexString(low) + ")"

   911                             );

   912                         }

   913                     } else {

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

   915                     }

   916                     break;

   917                 }

   918                 case opc_lcmp:

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

   920                     break;

   921                 case opc_fcmpl:

   922                 case opc_fcmpg:

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

   924                     break;

   925                 case opc_dcmpl:

   926                 case opc_dcmpg:

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

   928                     break;

   929                 case opc_if_acmpeq:

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

   931                                    "===", topMostLabel);

   932                     break;

   933                 case opc_if_acmpne:

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

   935                                    "!==", topMostLabel);

   936                     break;

   937                 case opc_if_icmpeq:

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

   939                                    "==", topMostLabel);

   940                     break;

   941                 case opc_ifeq: {

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

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

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

   945                     i += 2;

   946                     break;

   947                 }

   948                 case opc_ifne: {

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

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

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

   952                     i += 2;

   953                     break;

   954                 }

   955                 case opc_iflt: {

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

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

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

   959                     i += 2;

   960                     break;

   961                 }

   962                 case opc_ifle: {

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

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

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

   966                     i += 2;

   967                     break;

   968                 }

   969                 case opc_ifgt: {

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

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

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

   973                     i += 2;

   974                     break;

   975                 }

   976                 case opc_ifge: {

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

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

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

   980                     i += 2;

   981                     break;

   982                 }

   983                 case opc_ifnonnull: {

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

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

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

   987                     i += 2;

   988                     break;

   989                 }

   990                 case opc_ifnull: {

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

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

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

   994                     i += 2;

   995                     break;

   996                 }

   997                 case opc_if_icmpne:

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

   999                                    "!=", topMostLabel);

  1000                     break;

  1001                 case opc_if_icmplt:

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

  1003                                    "<", topMostLabel);

  1004                     break;

  1005                 case opc_if_icmple:

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

  1007                                    "<=", topMostLabel);

  1008                     break;

  1009                 case opc_if_icmpgt:

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

  1011                                    ">", topMostLabel);

  1012                     break;

  1013                 case opc_if_icmpge:

  1014                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1015                                    ">=", topMostLabel);

  1016                     break;

  1017                 case opc_goto: {

  1018                     smapper.flush(this);

  1019                     int indx = i + readShortArg(byteCodes, i);

  1020                     goTo(this, i, indx, topMostLabel);

  1021                     i += 2;

  1022                     break;

  1023                 }

  1024                 case opc_lookupswitch: {

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

  1026                     break;

  1027                 }

  1028                 case opc_tableswitch: {

  1029                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1030                     break;

  1031                 }

  1032                 case opc_invokeinterface: {

  1033                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1034                     break;

  1035                 }

  1036                 case opc_invokevirtual:

  1037                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1038                     break;

  1039                 case opc_invokespecial:

  1040                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1041                     break;

  1042                 case opc_invokestatic:

  1043                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1044                     break;

  1045                 case opc_new: {

  1046                     int indx = readUShortArg(byteCodes, i);

  1047                     String ci = jc.getClassName(indx);

  1048                     emit(smapper, this, "var @1 = new @2;",

  1049                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1050                     addReference(ci);

  1051                     i += 2;

  1052                     break;

  1053                 }

  1054                 case opc_newarray:

  1055                     int atype = readUByte(byteCodes, ++i);

  1056                     generateNewArray(atype, smapper);

  1057                     break;

  1058                 case opc_anewarray: {

  1059                     int type = readUShortArg(byteCodes, i);

  1060                     i += 2;

  1061                     generateANewArray(type, smapper);

  1062                     break;

  1063                 }

  1064                 case opc_multianewarray: {

  1065                     int type = readUShortArg(byteCodes, i);

  1066                     i += 2;

  1067                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1068                     break;

  1069                 }

  1070                 case opc_arraylength:

  1071                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1072                     break;

  1073                 case opc_lastore:

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

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

  1076                     break;

  1077                 case opc_fastore:

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

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

  1080                     break;

  1081                 case opc_dastore:

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

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

  1084                     break;

  1085                 case opc_aastore:

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

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

  1088                     break;

  1089                 case opc_iastore:

  1090                 case opc_bastore:

  1091                 case opc_castore:

  1092                 case opc_sastore:

  1093                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1094                          smapper.popI(), smapper.popI(), smapper.popA());

  1095                     break;

  1096                 case opc_laload:

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

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

  1099                     break;

  1100                 case opc_faload:

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

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

  1103                     break;

  1104                 case opc_daload:

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

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

  1107                     break;

  1108                 case opc_aaload:

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

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

  1111                     break;

  1112                 case opc_iaload:

  1113                 case opc_baload:

  1114                 case opc_caload:

  1115                 case opc_saload:

  1116                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1117                          smapper.popI(), smapper.getA(0));

  1118                     break;

  1119                 case opc_pop:

  1120                 case opc_pop2:

  1121                     smapper.pop(1);

  1122                     debug("/* pop */");

  1123                     break;

  1124                 case opc_dup: {

  1125                     final Variable v = smapper.get(0);

  1126                     if (smapper.isDirty()) {

  1127                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1128                     } else {

  1129                         smapper.assign(this, v.getType(), v);

  1130                     }

  1131                     break;

  1132                 }

  1133                 case opc_dup2: {

  1134                     final Variable vi1 = smapper.get(0);

  1136                     if (vi1.isCategory2()) {

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

  1138                              smapper.pushT(vi1.getType()), vi1);

  1139                     } else {

  1140                         final Variable vi2 = smapper.get(1);

  1141                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1142                              smapper.pushT(vi2.getType()), vi2,

  1143                              smapper.pushT(vi1.getType()), vi1);

  1144                     }

  1145                     break;

  1146                 }

  1147                 case opc_dup_x1: {

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

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

  1150                     final Variable vo3 = smapper.pushT(vi1.getType());

  1151                     final Variable vo2 = smapper.pushT(vi2.getType());

  1152                     final Variable vo1 = smapper.pushT(vi1.getType());

  1154                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1155                          vo1, vi1, vo2, vi2, vo3, vo1);

  1156                     break;

  1157                 }

  1158                 case opc_dup2_x1: {

  1159                     final Variable vi1 = smapper.pop(this);

  1160                     final Variable vi2 = smapper.pop(this);

  1162                     if (vi1.isCategory2()) {

  1163                         final Variable vo3 = smapper.pushT(vi1.getType());

  1164                         final Variable vo2 = smapper.pushT(vi2.getType());

  1165                         final Variable vo1 = smapper.pushT(vi1.getType());

  1167                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1168                              vo1, vi1, vo2, vi2, vo3, vo1);

  1169                     } else {

  1170                         final Variable vi3 = smapper.pop(this);

  1171                         final Variable vo5 = smapper.pushT(vi2.getType());

  1172                         final Variable vo4 = smapper.pushT(vi1.getType());

  1173                         final Variable vo3 = smapper.pushT(vi3.getType());

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

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

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

  1178                              vo1, vi1, vo2, vi2, vo3, vi3);

  1179                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1180                              vo4, vo1, vo5, vo2);

  1181                     }

  1182                     break;

  1183                 }

  1184                 case opc_dup_x2: {

  1185                     final Variable vi1 = smapper.pop(this);

  1186                     final Variable vi2 = smapper.pop(this);

  1188                     if (vi2.isCategory2()) {

  1189                         final Variable vo3 = smapper.pushT(vi1.getType());

  1190                         final Variable vo2 = smapper.pushT(vi2.getType());

  1191                         final Variable vo1 = smapper.pushT(vi1.getType());

  1193                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1194                              vo1, vi1, vo2, vi2, vo3, vo1);

  1195                     } else {

  1196                         final Variable vi3 = smapper.pop(this);

  1197                         final Variable vo4 = smapper.pushT(vi1.getType());

  1198                         final Variable vo3 = smapper.pushT(vi3.getType());

  1199                         final Variable vo2 = smapper.pushT(vi2.getType());

  1200                         final Variable vo1 = smapper.pushT(vi1.getType());

  1202                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1203                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1204                     }

  1205                     break;

  1206                 }

  1207                 case opc_dup2_x2: {

  1208                     final Variable vi1 = smapper.pop(this);

  1209                     final Variable vi2 = smapper.pop(this);

  1211                     if (vi1.isCategory2()) {

  1212                         if (vi2.isCategory2()) {

  1213                             final Variable vo3 = smapper.pushT(vi1.getType());

  1214                             final Variable vo2 = smapper.pushT(vi2.getType());

  1215                             final Variable vo1 = smapper.pushT(vi1.getType());

  1217                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1218                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1219                         } else {

  1220                             final Variable vi3 = smapper.pop(this);

  1221                             final Variable vo4 = smapper.pushT(vi1.getType());

  1222                             final Variable vo3 = smapper.pushT(vi3.getType());

  1223                             final Variable vo2 = smapper.pushT(vi2.getType());

  1224                             final Variable vo1 = smapper.pushT(vi1.getType());

  1226                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1227                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1228                         }

  1229                     } else {

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

  1232                         if (vi3.isCategory2()) {

  1233                             final Variable vo5 = smapper.pushT(vi2.getType());

  1234                             final Variable vo4 = smapper.pushT(vi1.getType());

  1235                             final Variable vo3 = smapper.pushT(vi3.getType());

  1236                             final Variable vo2 = smapper.pushT(vi2.getType());

  1237                             final Variable vo1 = smapper.pushT(vi1.getType());

  1239                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1240                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1241                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1242                                  vo4, vo1, vo5, vo2);

  1243                         } else {

  1244                             final Variable vi4 = smapper.pop(this);

  1245                             final Variable vo6 = smapper.pushT(vi2.getType());

  1246                             final Variable vo5 = smapper.pushT(vi1.getType());

  1247                             final Variable vo4 = smapper.pushT(vi4.getType());

  1248                             final Variable vo3 = smapper.pushT(vi3.getType());

  1249                             final Variable vo2 = smapper.pushT(vi2.getType());

  1250                             final Variable vo1 = smapper.pushT(vi1.getType());

  1252                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1253                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1254                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1255                                  vo5, vo1, vo6, vo2);

  1256                         }

  1257                     }

  1258                     break;

  1259                 }

  1260                 case opc_swap: {

  1261                     final Variable vi1 = smapper.get(0);

  1262                     final Variable vi2 = smapper.get(1);

  1264                     if (vi1.getType() == vi2.getType()) {

  1265                         final Variable tmp = smapper.pushT(vi1.getType());

  1267                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1268                              tmp, vi1, vi2);

  1269                         smapper.pop(1);

  1270                     } else {

  1271                         smapper.pop(2);

  1272                         smapper.pushT(vi1.getType());

  1273                         smapper.pushT(vi2.getType());

  1274                     }

  1275                     break;

  1276                 }

  1277                 case opc_bipush:

  1278                     smapper.assign(this, VarType.INTEGER,

  1279                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1280                     break;

  1281                 case opc_sipush:

  1282                     smapper.assign(this, VarType.INTEGER,

  1283                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1284                     );

  1285                     i += 2;

  1286                     break;

  1287                 case opc_getfield: {

  1288                     int indx = readUShortArg(byteCodes, i);

  1289                     String[] fi = jc.getFieldInfoName(indx);

  1290                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1291                     final String mangleClass = mangleClassName(fi[0]);

  1292                     final String mangleClassAccess = accessClass(mangleClass);

  1293                     smapper.replace(this, type, "@2.call(@1)",

  1294                          smapper.getA(0),

  1295                          accessField(mangleClassAccess + "(false)",

  1296                                      "_" + fi[1], fi)

  1297                     );

  1298                     i += 2;

  1299                     break;

  1300                 }

  1301                 case opc_putfield: {

  1302                     int indx = readUShortArg(byteCodes, i);

  1303                     String[] fi = jc.getFieldInfoName(indx);

  1304                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1305                     final String mangleClass = mangleClassName(fi[0]);

  1306                     final String mangleClassAccess = accessClass(mangleClass);

  1307                     emit(smapper, this, "@3.call(@2, @1);",

  1308                          smapper.popT(type),

  1309                          smapper.popA(),

  1310                          accessField(mangleClassAccess + "(false)",

  1311                                      "_" + fi[1], fi));

  1312                     i += 2;

  1313                     break;

  1314                 }

  1315                 case opc_getstatic: {

  1316                     int indx = readUShortArg(byteCodes, i);

  1317                     String[] fi = jc.getFieldInfoName(indx);

  1318                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1319                     String ac = accessClass(mangleClassName(fi[0]));

  1320                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1321                     smapper.assign(this, type, af + "()");

  1322                     i += 2;

  1323                     addReference(fi[0]);

  1324                     break;

  1325                 }

  1326                 case opc_putstatic: {

  1327                     int indx = readUShortArg(byteCodes, i);

  1328                     String[] fi = jc.getFieldInfoName(indx);

  1329                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1330                     emit(smapper, this, "@1(false)._@2(@3);",

  1331                          accessClass(mangleClassName(fi[0])), fi[1],

  1332                          smapper.popT(type));

  1333                     i += 2;

  1334                     addReference(fi[0]);

  1335                     break;

  1336                 }

  1337                 case opc_checkcast: {

  1338                     int indx = readUShortArg(byteCodes, i);

  1339                     generateCheckcast(indx, smapper);

  1340                     i += 2;

  1341                     break;

  1342                 }

  1343                 case opc_instanceof: {

  1344                     int indx = readUShortArg(byteCodes, i);

  1345                     generateInstanceOf(indx, smapper);

  1346                     i += 2;

  1347                     break;

  1348                 }

  1349                 case opc_athrow: {

  1350                     final CharSequence v = smapper.popA();

  1351                     smapper.clear();

  1353                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1354                          smapper.pushA(), v);

  1355                     break;

  1356                 }

  1358                 case opc_monitorenter: {

  1359                     debug("/* monitor enter */");

  1360                     smapper.popA();

  1361                     break;

  1362                 }

  1364                 case opc_monitorexit: {

  1365                     debug("/* monitor exit */");

  1366                     smapper.popA();

  1367                     break;

  1368                 }

  1370                 case opc_wide:

  1371                     wide = true;

  1372                     break;

  1374                 default: {

  1375                     wide = false;

  1376                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1377                          Integer.toString(c));

  1378                 }

  1379             }

  1380             if (debug(" //")) {

  1381                 generateByteCodeComment(prev, i, byteCodes);

  1382             }

  1383             if (outChanged) {

  1384                 append("\n");

  1385             }

  1386         }

  1387         if (previousTrap != null) {

  1388             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1389         }

  1390         if (didBranches) {

  1391             append("\n    }\n");

  1392         }

  1393         while (openBraces-- > 0) {

  1394             append('}');

  1395         }

  1396         append("\n};");

  1397     }

  1399     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1400         int i, final CharSequence v2, final CharSequence v1,

  1401         final String test, int topMostLabel

  1402     ) throws IOException {

  1403         mapper.flush(this);

  1404         int indx = i + readShortArg(byteCodes, i);

  1405         append("if ((").append(v1)

  1406            .append(") ").append(test).append(" (")

  1407            .append(v2).append(")) ");

  1408         goTo(this, i, indx, topMostLabel);

  1409         return i + 2;

  1410     }

  1412     private int readInt4(byte[] byteCodes, int offset) {

  1413         final int d = byteCodes[offset + 0] << 24;

  1414         final int c = byteCodes[offset + 1] << 16;

  1415         final int b = byteCodes[offset + 2] << 8;

  1416         final int a = byteCodes[offset + 3];

  1417         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1418     }

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

  1420         return byteCodes[offset] & 0xff;

  1421     }

  1423     private static int readUShort(byte[] byteCodes, int offset) {

  1424         return ((byteCodes[offset] & 0xff) << 8)

  1425                     | (byteCodes[offset + 1] & 0xff);

  1426     }

  1427     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1428         return readUShort(byteCodes, offsetInstruction + 1);

  1429     }

  1431     private static int readShort(byte[] byteCodes, int offset) {

  1432         int signed = byteCodes[offset];

  1433         byte b0 = (byte)signed;

  1434         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1435     }

  1436     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1437         return readShort(byteCodes, offsetInstruction + 1);

  1438     }

  1440     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1441         int i = 0;

  1442         Boolean count = null;

  1443         boolean array = false;

  1444         sig.append("__");

  1445         int firstPos = sig.length();

  1446         while (i < descriptor.length()) {

  1447             char ch = descriptor.charAt(i++);

  1448             switch (ch) {

  1449                 case '(':

  1450                     count = true;

  1451                     continue;

  1452                 case ')':

  1453                     count = false;

  1454                     continue;

  1455                 case 'B':

  1456                 case 'C':

  1457                 case 'D':

  1458                 case 'F':

  1459                 case 'I':

  1460                 case 'J':

  1461                 case 'S':

  1462                 case 'Z':

  1463                     if (count) {

  1464                         if (array) {

  1465                             sig.append("_3");

  1466                         }

  1467                         sig.append(ch);

  1468                         if (ch == 'J' || ch == 'D') {

  1469                             cnt.append('1');

  1470                         } else {

  1471                             cnt.append('0');

  1472                         }

  1473                     } else {

  1474                         sig.insert(firstPos, ch);

  1475                         if (array) {

  1476                             returnType[0] = '[';

  1477                             sig.insert(firstPos, "_3");

  1478                         } else {

  1479                             returnType[0] = ch;

  1480                         }

  1481                     }

  1482                     array = false;

  1483                     continue;

  1484                 case 'V':

  1485                     assert !count;

  1486                     returnType[0] = 'V';

  1487                     sig.insert(firstPos, 'V');

  1488                     continue;

  1489                 case 'L':

  1490                     int next = descriptor.indexOf(';', i);

  1491                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1492                     if (count) {

  1493                         if (array) {

  1494                             sig.append("_3");

  1495                         }

  1496                         sig.append(realSig);

  1497                         cnt.append('0');

  1498                     } else {

  1499                         sig.insert(firstPos, realSig);

  1500                         if (array) {

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

  1502                         }

  1503                         returnType[0] = 'L';

  1504                     }

  1505                     i = next + 1;

  1506                     array = false;

  1507                     continue;

  1508                 case '[':

  1509                     array = true;

  1510                     continue;

  1511                 default:

  1512                     throw new IllegalStateException("Invalid char: " + ch);

  1513             }

  1514         }

  1515     }

  1517     static String mangleSig(String sig) {

  1518         return mangleSig(sig, 0, sig.length());

  1519     }

  1521     private static String mangleMethodName(String name) {

  1522         StringBuilder sb = new StringBuilder(name.length() * 2);

  1523         int last = name.length();

  1524         for (int i = 0; i < last; i++) {

  1525             final char ch = name.charAt(i);

  1526             switch (ch) {

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

  1528                 default: sb.append(ch); break;

  1529             }

  1530         }

  1531         return sb.toString();

  1532     }

  1533     private static String mangleSig(String txt, int first, int last) {

  1534         StringBuilder sb = new StringBuilder((last - first) * 2);

  1535         for (int i = first; i < last; i++) {

  1536             final char ch = txt.charAt(i);

  1537             switch (ch) {

  1538                 case '/': sb.append('_'); break;

  1539                 case '_': sb.append("_1"); break;

  1540                 case ';': sb.append("_2"); break;

  1541                 case '[': sb.append("_3"); break;

  1542                 default:

  1543                     if (Character.isJavaIdentifierPart(ch)) {

  1544                         sb.append(ch);

  1545                     } else {

  1546                         sb.append("_0");

  1547                         String hex = Integer.toHexString(ch).toLowerCase(Locale.ENGLISH);

  1548                         for (int m = hex.length(); m < 4; m++) {

  1549                             sb.append("0");

  1550                         }

  1551                         sb.append(hex);

  1552                     }

  1553                 break;

  1554             }

  1555         }

  1556         return sb.toString();

  1557     }

  1559     private static String mangleClassName(String name) {

  1560         return mangleSig(name);

  1561     }

  1563     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1564         StringBuilder name = new StringBuilder();

  1565         if ("<init>".equals(m.getName())) { // NOI18N

  1566             name.append("cons"); // NOI18N

  1567         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1568             name.append("class"); // NOI18N

  1569         } else {

  1570             name.append(mangleMethodName(m.getName()));

  1571         }

  1573         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1574         return name.toString();

  1575     }

  1577     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1578         StringBuilder name = new StringBuilder();

  1579         String descr = mi[2];//mi.getDescriptor();

  1580         String nm= mi[1];

  1581         if ("<init>".equals(nm)) { // NOI18N

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

  1583         } else {

  1584             name.append(mangleMethodName(nm));

  1585         }

  1586         countArgs(descr, returnType, name, cnt);

  1587         return name.toString();

  1588     }

  1590     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1591     throws IOException {

  1592         int methodIndex = readUShortArg(byteCodes, i);

  1593         String[] mi = jc.getFieldInfoName(methodIndex);

  1594         char[] returnType = { 'V' };

  1595         StringBuilder cnt = new StringBuilder();

  1596         String mn = findMethodName(mi, cnt, returnType);

  1598         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1599         final CharSequence[] vars = new CharSequence[numArguments];

  1601         for (int j = numArguments - 1; j >= 0; --j) {

  1602             vars[j] = mapper.popValue();

  1603         }

  1605         if (returnType[0] != 'V') {

  1606             mapper.flush(this);

  1607             append("var ")

  1608                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1609                .append(" = ");

  1610         }

  1612         final String in = mi[0];

  1613         String mcn;

  1614         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1615             mcn = "java_lang_Class";

  1616         } else {

  1617             mcn = mangleClassName(in);

  1618         }

  1619         String object = accessClass(mcn) + "(false)";

  1620         if (mn.startsWith("cons_")) {

  1621             object += ".constructor";

  1622         }

  1623         append(accessStaticMethod(object, mn, mi));

  1624         if (isStatic) {

  1625             append('(');

  1626         } else {

  1627             append(".call(");

  1628         }

  1629         if (numArguments > 0) {

  1630             append(vars[0]);

  1631             for (int j = 1; j < numArguments; ++j) {

  1632                 append(", ");

  1633                 append(vars[j]);

  1634             }

  1635         }

  1636         append(");");

  1637         i += 2;

  1638         addReference(in);

  1639         return i;

  1640     }

  1641     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1642     throws IOException {

  1643         int methodIndex = readUShortArg(byteCodes, i);

  1644         String[] mi = jc.getFieldInfoName(methodIndex);

  1645         char[] returnType = { 'V' };

  1646         StringBuilder cnt = new StringBuilder();

  1647         String mn = findMethodName(mi, cnt, returnType);

  1649         final int numArguments = cnt.length() + 1;

  1650         final CharSequence[] vars = new CharSequence[numArguments];

  1652         for (int j = numArguments - 1; j >= 0; --j) {

  1653             vars[j] = mapper.popValue();

  1654         }

  1656         if (returnType[0] != 'V') {

  1657             append("var ")

  1658                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1659                .append(" = ");

  1660         }

  1662         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1663         String sep = "";

  1664         for (int j = 1; j < numArguments; ++j) {

  1665             append(sep);

  1666             append(vars[j]);

  1667             sep = ", ";

  1668         }

  1669         append(");");

  1670         i += 2;

  1671         return i;

  1672     }

  1674     private void addReference(String cn) throws IOException {

  1675         if (requireReference(cn)) {

  1676             debug(" /* needs " + cn + " */");

  1677         }

  1678     }

  1680     private void outType(String d, StringBuilder out) {

  1681         int arr = 0;

  1682         while (d.charAt(0) == '[') {

  1683             out.append('A');

  1684             d = d.substring(1);

  1685         }

  1686         if (d.charAt(0) == 'L') {

  1687             assert d.charAt(d.length() - 1) == ';';

  1688             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1689         } else {

  1690             out.append(d);

  1691         }

  1692     }

  1694     private String encodeConstant(int entryIndex) throws IOException {

  1695         String[] classRef = { null };

  1696         String s = jc.stringValue(entryIndex, classRef);

  1697         if (classRef[0] != null) {

  1698             if (classRef[0].startsWith("[")) {

  1699                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1700             } else {

  1701                 addReference(classRef[0]);

  1702                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1703             }

  1704         }

  1705         return s;

  1706     }

  1708     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1709         byte[] arr = m.findAnnotationData(true);

  1710         if (arr == null) {

  1711             return null;

  1712         }

  1713         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1714         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1715         class P extends AnnotationParser {

  1716             public P() {

  1717                 super(false, true);

  1718             }

  1720             int cnt;

  1721             String[] args = new String[30];

  1722             String body;

  1723             boolean javacall;

  1724             boolean html4j;

  1726             @Override

  1727             protected void visitAttr(String type, String attr, String at, String value) {

  1728                 if (type.equals(jvmType)) {

  1729                     if ("body".equals(attr)) {

  1730                         body = value;

  1731                     } else if ("args".equals(attr)) {

  1732                         args[cnt++] = value;

  1733                     } else {

  1734                         throw new IllegalArgumentException(attr);

  1735                     }

  1736                 }

  1737                 if (type.equals(htmlType)) {

  1738                     html4j = true;

  1739                     if ("body".equals(attr)) {

  1740                         body = value;

  1741                     } else if ("args".equals(attr)) {

  1742                         args[cnt++] = value;

  1743                     } else if ("javacall".equals(attr)) {

  1744                         javacall = "1".equals(value);

  1745                     } else {

  1746                         throw new IllegalArgumentException(attr);

  1747                     }

  1748                 }

  1749             }

  1750         }

  1751         P p = new P();

  1752         p.parse(arr, jc);

  1753         if (p.body == null) {

  1754             return null;

  1755         }

  1756         StringBuilder cnt = new StringBuilder();

  1757         final String mn = findMethodName(m, cnt);

  1758         append(destObject).append(".").append(mn);

  1759         append(" = function(");

  1760         String space = "";

  1761         int index = 0;

  1762         StringBuilder toValue = new StringBuilder();

  1763         for (int i = 0; i < cnt.length(); i++) {

  1764             append(space);

  1765             space = outputArg(this, p.args, index);

  1766             if (p.html4j && space.length() > 0) {

  1767                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1768                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1769                     append(p.args[index]).append(");");

  1770             }

  1771             index++;

  1772         }

  1773         append(") {").append("\n");

  1774         append(toValue.toString());

  1775         if (p.javacall) {

  1776             int lastSlash = jc.getClassName().lastIndexOf('/');

  1777             final String pkg = jc.getClassName().substring(0, lastSlash);

  1778             append(mangleCallbacks(pkg, p.body));

  1779             requireReference(pkg + "/$JsCallbacks$");

  1780         } else {

  1781             append(p.body);

  1782         }

  1783         append("\n}\n");

  1784         return mn;

  1785     }

  1787     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1788         StringBuilder sb = new StringBuilder();

  1789         int pos = 0;

  1790         for (;;) {

  1791             int next = body.indexOf(".@", pos);

  1792             if (next == -1) {

  1793                 sb.append(body.substring(pos));

  1794                 body = sb.toString();

  1795                 break;

  1796             }

  1797             int ident = next;

  1798             while (ident > 0) {

  1799                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1800                     ident++;

  1801                     break;

  1802                 }

  1803             }

  1804             String refId = body.substring(ident, next);

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

  1808             int sigBeg = body.indexOf('(', next);

  1809             int sigEnd = body.indexOf(')', sigBeg);

  1810             int colon4 = body.indexOf("::", next);

  1811             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1812                 throw new IllegalStateException("Malformed body " + body);

  1813             }

  1814             String fqn = body.substring(next + 2, colon4);

  1815             String method = body.substring(colon4 + 2, sigBeg);

  1816             String params = body.substring(sigBeg, sigEnd + 1);

  1818             int paramBeg = body.indexOf('(', sigEnd + 1);

  1820             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1821             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1822             sb.append("(").append(refId);

  1823             if (body.charAt(paramBeg + 1) != ')') {

  1824                 sb.append(",");

  1825             }

  1826             pos = paramBeg + 1;

  1827         }

  1828         sb = null;

  1829         pos = 0;

  1830         for (;;) {

  1831             int next = body.indexOf("@", pos);

  1832             if (next == -1) {

  1833                 if (sb == null) {

  1834                     return body;

  1835                 }

  1836                 sb.append(body.substring(pos));

  1837                 return sb;

  1838             }

  1839             if (sb == null) {

  1840                 sb = new StringBuilder();

  1841             }

  1843             sb.append(body.substring(pos, next));

  1845             int sigBeg = body.indexOf('(', next);

  1846             int sigEnd = body.indexOf(')', sigBeg);

  1847             int colon4 = body.indexOf("::", next);

  1848             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1849                 throw new IllegalStateException("Malformed body " + body);

  1850             }

  1851             String fqn = body.substring(next + 1, colon4);

  1852             String method = body.substring(colon4 + 2, sigBeg);

  1853             String params = body.substring(sigBeg, sigEnd + 1);

  1855             int paramBeg = body.indexOf('(', sigEnd + 1);

  1857             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1858             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1859             sb.append("(");

  1860             pos = paramBeg + 1;

  1861         }

  1862     }

  1864     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1865         if (params.startsWith("(")) {

  1866             params = params.substring(1);

  1867         }

  1868         if (params.endsWith(")")) {

  1869             params = params.substring(0, params.length() - 1);

  1870         }

  1871         StringBuilder sb = new StringBuilder();

  1872         final String fqnu = fqn.replace('.', '_');

  1873         final String rfqn = mangleClassName(fqnu);

  1874         final String rm = mangleMethodName(method);

  1875         final String srp;

  1876         {

  1877             StringBuilder pb = new StringBuilder();

  1878             int len = params.length();

  1879             int indx = 0;

  1880             while (indx < len) {

  1881                 char ch = params.charAt(indx);

  1882                 if (ch == '[' || ch == 'L') {

  1883                     pb.append("Ljava/lang/Object;");

  1884                     indx = params.indexOf(';', indx) + 1;

  1885                 } else {

  1886                     pb.append(ch);

  1887                     indx++;

  1888                 }

  1889             }

  1890             srp = mangleSig(pb.toString());

  1891         }

  1892         final String rp = mangleSig(params);

  1893         final String mrp = mangleMethodName(rp);

  1894         sb.append(rfqn).append("$").append(rm).

  1895             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1896         if (!isStatic) {

  1897             sb.append('L').append(fqnu).append("_2");

  1898         }

  1899         sb.append(srp);

  1900         return sb.toString();

  1901     }

  1903     private static String className(ClassData jc) {

  1904         //return jc.getName().getInternalName().replace('/', '_');

  1905         return mangleClassName(jc.getClassName());

  1906     }

  1908     private static String[] findAnnotation(

  1909         byte[] arr, ClassData cd, final String className,

  1910         final String... attrNames

  1911     ) throws IOException {

  1912         if (arr == null) {

  1913             return null;

  1914         }

  1915         final String[] values = new String[attrNames.length];

  1916         final boolean[] found = { false };

  1917         final String jvmType = "L" + className.replace('.', '/') + ";";

  1918         AnnotationParser ap = new AnnotationParser(false, true) {

  1919             @Override

  1920             protected void visitAttr(String type, String attr, String at, String value) {

  1921                 if (type.equals(jvmType)) {

  1922                     found[0] = true;

  1923                     for (int i = 0; i < attrNames.length; i++) {

  1924                         if (attrNames[i].equals(attr)) {

  1925                             values[i] = value;

  1926                         }

  1927                     }

  1928                 }

  1929             }

  1931         };

  1932         ap.parse(arr, cd);

  1933         return found[0] ? values : null;

  1934     }

  1936     private CharSequence initField(FieldData v) {

  1937         final String is = v.getInternalSig();

  1938         if (is.length() == 1) {

  1939             switch (is.charAt(0)) {

  1940                 case 'S':

  1941                 case 'J':

  1942                 case 'B':

  1943                 case 'Z':

  1944                 case 'C':

  1945                 case 'I': return " = 0;";

  1946                 case 'F':

  1947                 case 'D': return " = 0.0;";

  1948                 default:

  1949                     throw new IllegalStateException(is);

  1950             }

  1951         }

  1952         return " = null;";

  1953     }

  1955     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  1956         AnnotationParser ap = new AnnotationParser(true, false) {

  1957             int[] cnt = new int[32];

  1958             int depth;

  1960             @Override

  1961             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1962                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1963                 requireReference(slashType);

  1965                 if (cnt[depth]++ > 0) {

  1966                     append(",");

  1967                 }

  1968                 if (top) {

  1969                     append('"').append(attrType).append("\" : ");

  1970                 }

  1971                 append("{\n");

  1972                 cnt[++depth] = 0;

  1973             }

  1975             @Override

  1976             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1977                 append("\n}\n");

  1978                 depth--;

  1979             }

  1981             @Override

  1982             protected void visitValueStart(String attrName, char type) throws IOException {

  1983                 if (cnt[depth]++ > 0) {

  1984                     append(",\n");

  1985                 }

  1986                 cnt[++depth] = 0;

  1987                 if (attrName != null) {

  1988                     append('"').append(attrName).append("\" : ");

  1989                 }

  1990                 if (type == '[') {

  1991                     append("[");

  1992                 }

  1993             }

  1995             @Override

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

  1997                 if (type == '[') {

  1998                     append("]");

  1999                 }

  2000                 depth--;

  2001             }

  2003             @Override

  2004             protected void visitAttr(String type, String attr, String attrType, String value)

  2005             throws IOException {

  2006                 if (attr == null && value == null) {

  2007                     return;

  2008                 }

  2009                 append(value);

  2010             }

  2012             @Override

  2013             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2014             throws IOException {

  2015                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2016                 requireReference(slashType);

  2018                 final String cn = mangleClassName(slashType);

  2019                 append(accessClass(cn))

  2020                    .append("(false)['valueOf__L").

  2021                     append(cn).

  2022                     append("_2Ljava_lang_String_2']('").

  2023                     append(value).

  2024                     append("')");

  2025             }

  2026         };

  2027         ap.parse(data, cd);

  2028     }

  2030     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2031         final String name = args[indx];

  2032         if (name == null) {

  2033             return "";

  2034         }

  2035         if (name.contains(",")) {

  2036             throw new IOException("Wrong parameter with ',': " + name);

  2037         }

  2038         out.append(name);

  2039         return ",";

  2040     }

  2042     final void emitNoFlush(

  2043         StackMapper sm,

  2044         final String format, final CharSequence... params

  2045     ) throws IOException {

  2046         emitImpl(this, format, params);

  2047     }

  2048     static final void emit(

  2049         StackMapper sm,

  2050         final Appendable out,

  2051         final String format, final CharSequence... params

  2052     ) throws IOException {

  2053         sm.flush(out);

  2054         emitImpl(out, format, params);

  2055     }

  2056     static void emitImpl(final Appendable out,

  2057                              final String format,

  2058                              final CharSequence... params) throws IOException {

  2059         final int length = format.length();

  2061         int processed = 0;

  2062         int paramOffset = format.indexOf('@');

  2063         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2064             final char paramChar = format.charAt(paramOffset + 1);

  2065             if ((paramChar >= '1') && (paramChar <= '9')) {

  2066                 final int paramIndex = paramChar - '0' - 1;

  2068                 out.append(format, processed, paramOffset);

  2069                 out.append(params[paramIndex]);

  2071                 ++paramOffset;

  2072                 processed = paramOffset + 1;

  2073             }

  2075             paramOffset = format.indexOf('@', paramOffset + 1);

  2076         }

  2078         out.append(format, processed, length);

  2079     }

  2081     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2082         append("} catch (e) {\n");

  2083         int finallyPC = -1;

  2084         for (TrapData e : traps) {

  2085             if (e == null) {

  2086                 break;

  2087             }

  2088             if (e.catch_cpx != 0) { //not finally

  2089                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2090                 addReference(classInternalName);

  2091                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2092                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2093                 append("var stA0 = e;");

  2094                 goTo(this, current, e.handler_pc, topMostLabel);

  2095                 append("}\n");

  2096             } else {

  2097                 finallyPC = e.handler_pc;

  2098             }

  2099         }

  2100         if (finallyPC == -1) {

  2101             append("throw e;");

  2102         } else {

  2103             append("var stA0 = e;");

  2104             goTo(this, current, finallyPC, topMostLabel);

  2105         }

  2106         append("\n}");

  2107     }

  2109     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2110         if (to < current) {

  2111             if (canBack < to) {

  2112                 out.append("{ gt = 0; continue X_" + to + "; }");

  2113             } else {

  2114                 out.append("{ gt = " + to + "; continue X_0; }");

  2115             }

  2116         } else {

  2117             out.append("{ gt = " + to + "; break IF; }");

  2118         }

  2119     }

  2121     private static void emitIf(

  2122         StackMapper sm,

  2123         Appendable out, String pattern,

  2124         CharSequence param,

  2125         int current, int to, int canBack

  2126     ) throws IOException {

  2127         sm.flush(out);

  2128         emitImpl(out, pattern, param);

  2129         goTo(out, current, to, canBack);

  2130     }

  2132     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2133         String jvmType;

  2134         switch (atype) {

  2135             case 4: jvmType = "[Z"; break;

  2136             case 5: jvmType = "[C"; break;

  2137             case 6: jvmType = "[F"; break;

  2138             case 7: jvmType = "[D"; break;

  2139             case 8: jvmType = "[B"; break;

  2140             case 9: jvmType = "[S"; break;

  2141             case 10: jvmType = "[I"; break;

  2142             case 11: jvmType = "[J"; break;

  2143             default: throw new IllegalStateException("Array type: " + atype);

  2144         }

  2145         emit(smapper, this,

  2146             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2147              smapper.popI(), smapper.pushA(), jvmType);

  2148     }

  2150     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2151         String typeName = jc.getClassName(type);

  2152         String ref = "null";

  2153         if (typeName.startsWith("[")) {

  2154             typeName = "'[" + typeName + "'";

  2155         } else {

  2156             ref = "vm." + mangleClassName(typeName);

  2157             typeName = "'[L" + typeName + ";'";

  2158         }

  2159         emit(smapper, this,

  2160             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2161              smapper.popI(), smapper.pushA(), typeName, ref);

  2162     }

  2164     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2165         String typeName = jc.getClassName(type);

  2166         int dim = readUByte(byteCodes, ++i);

  2167         StringBuilder dims = new StringBuilder();

  2168         dims.append('[');

  2169         for (int d = 0; d < dim; d++) {

  2170             if (d != 0) {

  2171                 dims.insert(1, ",");

  2172             }

  2173             dims.insert(1, smapper.popI());

  2174         }

  2175         dims.append(']');

  2176         String fn = "null";

  2177         if (typeName.charAt(dim) == 'L') {

  2178             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2179         }

  2180         emit(smapper, this,

  2181             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2182              dims.toString(), smapper.pushA(), typeName, fn

  2183         );

  2184         return i;

  2185     }

  2187     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2188         int table = i / 4 * 4 + 4;

  2189         int dflt = i + readInt4(byteCodes, table);

  2190         table += 4;

  2191         int low = readInt4(byteCodes, table);

  2192         table += 4;

  2193         int high = readInt4(byteCodes, table);

  2194         table += 4;

  2195         final CharSequence swVar = smapper.popValue();

  2196         smapper.flush(this);

  2197         append("switch (").append(swVar).append(") {\n");

  2198         while (low <= high) {

  2199             int offset = i + readInt4(byteCodes, table);

  2200             table += 4;

  2201             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2202             low++;

  2203         }

  2204         append("  default: ");

  2205         goTo(this, i, dflt, topMostLabel);

  2206         append("\n}");

  2207         i = table - 1;

  2208         return i;

  2209     }

  2211     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2212         int table = i / 4 * 4 + 4;

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

  2214         table += 4;

  2215         int n = readInt4(byteCodes, table);

  2216         table += 4;

  2217         final CharSequence swVar = smapper.popValue();

  2218         smapper.flush(this);

  2219         append("switch (").append(swVar).append(") {\n");

  2220         while (n-- > 0) {

  2221             int cnstnt = readInt4(byteCodes, table);

  2222             table += 4;

  2223             int offset = i + readInt4(byteCodes, table);

  2224             table += 4;

  2225             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2226         }

  2227         append("  default: ");

  2228         goTo(this, i, dflt, topMostLabel);

  2229         append("\n}");

  2230         i = table - 1;

  2231         return i;

  2232     }

  2234     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2235         String type = jc.getClassName(indx);

  2236         if (!type.startsWith("[")) {

  2237             emit(smapper, this,

  2238                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2239                  smapper.popA(), smapper.pushI(),

  2240                  type.replace('/', '_'));

  2241         } else {

  2242             int cnt = 0;

  2243             while (type.charAt(cnt) == '[') {

  2244                 cnt++;

  2245             }

  2246             if (type.charAt(cnt) == 'L') {

  2247                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2248                 emit(smapper, this,

  2249                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2250                     smapper.popA(), smapper.pushI(),

  2251                     type, "" + cnt

  2252                 );

  2253             } else {

  2254                 emit(smapper, this,

  2255                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2256                     smapper.popA(), smapper.pushI(), type

  2257                 );

  2258             }

  2259         }

  2260     }

  2262     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2263         String type = jc.getClassName(indx);

  2264         if (!type.startsWith("[")) {

  2265             emitNoFlush(smapper,

  2266                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2267                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2268         } else {

  2269             int cnt = 0;

  2270             while (type.charAt(cnt) == '[') {

  2271                 cnt++;

  2272             }

  2273             if (type.charAt(cnt) == 'L') {

  2274                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2275                 emitNoFlush(smapper,

  2276                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2277                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2278                 );

  2279             } else {

  2280                 emitNoFlush(smapper,

  2281                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2282                      smapper.getT(0, VarType.REFERENCE, false), type

  2283                 );

  2284             }

  2285         }

  2286     }

  2288     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2289         for (int j = prev; j <= i; j++) {

  2290             append(" ");

  2291             final int cc = readUByte(byteCodes, j);

  2292             append(Integer.toString(cc));

  2293         }

  2294     }

  2295 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 22 Jun 2014 00:09:56 +0200
branch	defprop
changeset 1632	8ac637d7d62a
parent 1613	81926ff11587
child 1633	a34e2191b6be
permissions	-rw-r--r--