hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@03f1dd008e83

     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        x['").append(instOfName).append("'] = 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    c['fillInstOf'] = fillInstOf;");

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

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

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

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

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

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

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

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

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

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

   281         if (classAnno != null) {

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

   283             generateAnno(jc, classAnno);

   284             append("\n    };");

   285         }

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

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

   288         }

   289         append("\n  }");

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

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

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

   293         append("\n    }");

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

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

   296             if (javaScriptOnly(onlyArr)) continue;

   297             if (!v.isStatic()) {

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

   299                     append(className).append('_').

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

   301             }

   302         }

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

   304         append("\n  }");

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

   306         append("\n};");

   308         declaredClass(jc, className);

   310 //        StringBuilder sb = new StringBuilder();

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

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

   313 //        }

   314         return "";

   315     }

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

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

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

   320             "name", "value"

   321         );

   322         if (only != null) {

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

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

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

   326             }

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

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

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

   330             }

   331             return true;

   332         }

   333         return false;

   334     }

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

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

   337         if (jsb != null) {

   338             return jsb;

   339         }

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

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

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

   343         }

   344         generateMethod(destObject, mn, m);

   345         return mn;

   346     }

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

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

   350         if (jsb != null) {

   351             return jsb;

   352         }

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

   354         generateMethod(destObject, mn, m);

   355         return mn;

   356     }

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

   359             throws IOException {

   360         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   361         TrapDataIterator trap = m.getTrapDataIterator();

   362         final LocalsMapper lmapper =

   363                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   370         if (byteCodes == null) {

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

   372                .append(jc.getClassName()).append('.')

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

   374             append("};");

   375             return;

   376         }

   378         final StackMapper smapper = new StackMapper();

   380         if (!m.isStatic()) {

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

   382         }

   384         int lastStackFrame;

   385         TrapData[] previousTrap = null;

   386         boolean wide = false;

   387         boolean didBranches;

   388         if (stackMapIterator.isEmpty()) {

   389             didBranches = false;

   390             lastStackFrame = 0;

   391         } else {

   392             didBranches = true;

   393             lastStackFrame = -1;

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

   395         }

   397         int openBraces = 0;

   398         int topMostLabel = 0;

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

   400             int prev = i;

   401             outChanged = false;

   402             stackMapIterator.advanceTo(i);

   403             boolean changeInCatch = trap.advanceTo(i);

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

   405                 if (previousTrap != null) {

   406                     generateCatch(previousTrap, i, topMostLabel);

   407                     previousTrap = null;

   408                 }

   409             }

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

   411                 smapper.flush(this);

   412                 if (i != 0) {

   413                     append("    }\n");

   414                 }

   415                 if (openBraces > 64) {

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

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

   418                     }

   419                     openBraces = 1;

   420                     topMostLabel = i;

   421                 }

   423                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   427                 openBraces++;

   428                 changeInCatch = true;

   429             } else {

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

   431             }

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

   433                 append("try {");

   434                 previousTrap = trap.current();

   435             }

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

   437             switch (c) {

   438                 case opc_aload_0:

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

   440                     break;

   441                 case opc_iload_0:

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

   443                     break;

   444                 case opc_lload_0:

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

   446                     break;

   447                 case opc_fload_0:

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

   449                     break;

   450                 case opc_dload_0:

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

   452                     break;

   453                 case opc_aload_1:

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

   455                     break;

   456                 case opc_iload_1:

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

   458                     break;

   459                 case opc_lload_1:

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

   461                     break;

   462                 case opc_fload_1:

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

   464                     break;

   465                 case opc_dload_1:

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

   467                     break;

   468                 case opc_aload_2:

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

   470                     break;

   471                 case opc_iload_2:

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

   473                     break;

   474                 case opc_lload_2:

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

   476                     break;

   477                 case opc_fload_2:

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

   479                     break;

   480                 case opc_dload_2:

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

   482                     break;

   483                 case opc_aload_3:

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

   485                     break;

   486                 case opc_iload_3:

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

   488                     break;

   489                 case opc_lload_3:

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

   491                     break;

   492                 case opc_fload_3:

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

   494                     break;

   495                 case opc_dload_3:

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

   497                     break;

   498                 case opc_iload: {

   499                     ++i;

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

   501                                           : readUByte(byteCodes, i);

   502                     wide = false;

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

   504                     break;

   505                 }

   506                 case opc_lload: {

   507                     ++i;

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

   509                                           : readUByte(byteCodes, i);

   510                     wide = false;

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

   512                     break;

   513                 }

   514                 case opc_fload: {

   515                     ++i;

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

   517                                           : readUByte(byteCodes, i);

   518                     wide = false;

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

   520                     break;

   521                 }

   522                 case opc_dload: {

   523                     ++i;

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

   525                                           : readUByte(byteCodes, i);

   526                     wide = false;

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

   528                     break;

   529                 }

   530                 case opc_aload: {

   531                     ++i;

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

   533                                           : readUByte(byteCodes, i);

   534                     wide = false;

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

   536                     break;

   537                 }

   538                 case opc_istore: {

   539                     ++i;

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

   541                                           : readUByte(byteCodes, i);

   542                     wide = false;

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

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

   545                     break;

   546                 }

   547                 case opc_lstore: {

   548                     ++i;

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

   550                                           : readUByte(byteCodes, i);

   551                     wide = false;

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

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

   554                     break;

   555                 }

   556                 case opc_fstore: {

   557                     ++i;

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

   559                                           : readUByte(byteCodes, i);

   560                     wide = false;

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

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

   563                     break;

   564                 }

   565                 case opc_dstore: {

   566                     ++i;

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

   568                                           : readUByte(byteCodes, i);

   569                     wide = false;

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

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

   572                     break;

   573                 }

   574                 case opc_astore: {

   575                     ++i;

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

   577                                           : readUByte(byteCodes, i);

   578                     wide = false;

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

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

   581                     break;

   582                 }

   583                 case opc_astore_0:

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

   585                     break;

   586                 case opc_istore_0:

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

   588                     break;

   589                 case opc_lstore_0:

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

   591                     break;

   592                 case opc_fstore_0:

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

   594                     break;

   595                 case opc_dstore_0:

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

   597                     break;

   598                 case opc_astore_1:

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

   600                     break;

   601                 case opc_istore_1:

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

   603                     break;

   604                 case opc_lstore_1:

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

   606                     break;

   607                 case opc_fstore_1:

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

   609                     break;

   610                 case opc_dstore_1:

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

   612                     break;

   613                 case opc_astore_2:

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

   615                     break;

   616                 case opc_istore_2:

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

   618                     break;

   619                 case opc_lstore_2:

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

   621                     break;

   622                 case opc_fstore_2:

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

   624                     break;

   625                 case opc_dstore_2:

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

   627                     break;

   628                 case opc_astore_3:

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

   630                     break;

   631                 case opc_istore_3:

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

   633                     break;

   634                 case opc_lstore_3:

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

   636                     break;

   637                 case opc_fstore_3:

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

   639                     break;

   640                 case opc_dstore_3:

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

   642                     break;

   643                 case opc_iadd:

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

   645                     break;

   646                 case opc_ladd:

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

   648                     break;

   649                 case opc_fadd:

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

   651                     break;

   652                 case opc_dadd:

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

   654                     break;

   655                 case opc_isub:

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

   657                     break;

   658                 case opc_lsub:

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

   660                     break;

   661                 case opc_fsub:

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

   663                     break;

   664                 case opc_dsub:

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

   666                     break;

   667                 case opc_imul:

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

   669                     break;

   670                 case opc_lmul:

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

   672                     break;

   673                 case opc_fmul:

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

   675                     break;

   676                 case opc_dmul:

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

   678                     break;

   679                 case opc_idiv:

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

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

   682                     break;

   683                 case opc_ldiv:

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

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

   686                     break;

   687                 case opc_fdiv:

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

   689                     break;

   690                 case opc_ddiv:

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

   692                     break;

   693                 case opc_irem:

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

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

   696                     break;

   697                 case opc_lrem:

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

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

   700                     break;

   701                 case opc_frem:

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

   703                     break;

   704                 case opc_drem:

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

   706                     break;

   707                 case opc_iand:

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

   709                     break;

   710                 case opc_land:

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

   712                     break;

   713                 case opc_ior:

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

   715                     break;

   716                 case opc_lor:

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

   718                     break;

   719                 case opc_ixor:

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

   721                     break;

   722                 case opc_lxor:

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

   724                     break;

   725                 case opc_ineg:

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

   727                     break;

   728                 case opc_lneg:

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

   730                     break;

   731                 case opc_fneg:

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

   733                     break;

   734                 case opc_dneg:

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

   736                     break;

   737                 case opc_ishl:

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

   739                     break;

   740                 case opc_lshl:

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

   742                     break;

   743                 case opc_ishr:

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

   745                     break;

   746                 case opc_lshr:

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

   748                     break;

   749                 case opc_iushr:

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

   751                     break;

   752                 case opc_lushr:

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

   754                     break;

   755                 case opc_iinc: {

   756                     ++i;

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

   758                                              : readUByte(byteCodes, i);

   759                     ++i;

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

   761                                             : byteCodes[i];

   762                     wide = false;

   763                     if (incrBy == 1) {

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

   765                     } else {

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

   767                              lmapper.getI(varIndx),

   768                              Integer.toString(incrBy));

   769                     }

   770                     break;

   771                 }

   772                 case opc_return:

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

   774                     break;

   775                 case opc_ireturn:

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

   777                     break;

   778                 case opc_lreturn:

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

   780                     break;

   781                 case opc_freturn:

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

   783                     break;

   784                 case opc_dreturn:

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

   786                     break;

   787                 case opc_areturn:

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

   789                     break;

   790                 case opc_i2l:

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

   792                     break;

   793                 case opc_i2f:

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

   795                     break;

   796                 case opc_i2d:

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

   798                     break;

   799                 case opc_l2i:

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

   801                     break;

   802                     // max int check?

   803                 case opc_l2f:

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

   805                     break;

   806                 case opc_l2d:

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

   808                     break;

   809                 case opc_f2d:

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

   811                          smapper.getF(0));

   812                     break;

   813                 case opc_d2f:

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

   815                          smapper.getD(0));

   816                     break;

   817                 case opc_f2i:

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

   819                          smapper.getF(0));

   820                     break;

   821                 case opc_f2l:

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

   823                          smapper.getF(0));

   824                     break;

   825                 case opc_d2i:

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

   827                          smapper.getD(0));

   828                     break;

   829                 case opc_d2l:

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

   831                     break;

   832                 case opc_i2b:

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

   834                     break;

   835                 case opc_i2c:

   836                 case opc_i2s:

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

   838                     break;

   839                 case opc_aconst_null:

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

   841                     break;

   842                 case opc_iconst_m1:

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

   844                     break;

   845                 case opc_iconst_0:

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

   847                     break;

   848                 case opc_dconst_0:

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

   850                     break;

   851                 case opc_lconst_0:

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

   853                     break;

   854                 case opc_fconst_0:

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

   856                     break;

   857                 case opc_iconst_1:

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

   859                     break;

   860                 case opc_lconst_1:

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

   862                     break;

   863                 case opc_fconst_1:

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

   865                     break;

   866                 case opc_dconst_1:

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

   868                     break;

   869                 case opc_iconst_2:

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

   871                     break;

   872                 case opc_fconst_2:

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

   874                     break;

   875                 case opc_iconst_3:

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

   877                     break;

   878                 case opc_iconst_4:

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

   880                     break;

   881                 case opc_iconst_5:

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

   883                     break;

   884                 case opc_ldc: {

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

   886                     String v = encodeConstant(indx);

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

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

   889                     break;

   890                 }

   891                 case opc_ldc_w:

   892                 case opc_ldc2_w: {

   893                     int indx = readUShortArg(byteCodes, i);

   894                     i += 2;

   895                     String v = encodeConstant(indx);

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

   897                     if (type == VarType.LONG) {

   898                         final Long lv = new Long(v);

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

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

   901                         if (hi == 0) {

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

   903                         } else {

   904                             smapper.assign(this, VarType.LONG,

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

   906                                     Integer.toHexString(low) + ")"

   907                             );

   908                         }

   909                     } else {

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

   911                     }

   912                     break;

   913                 }

   914                 case opc_lcmp:

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

   916                     break;

   917                 case opc_fcmpl:

   918                 case opc_fcmpg:

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

   920                     break;

   921                 case opc_dcmpl:

   922                 case opc_dcmpg:

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

   924                     break;

   925                 case opc_if_acmpeq:

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

   927                                    "===", topMostLabel);

   928                     break;

   929                 case opc_if_acmpne:

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

   931                                    "!==", topMostLabel);

   932                     break;

   933                 case opc_if_icmpeq:

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

   935                                    "==", topMostLabel);

   936                     break;

   937                 case opc_ifeq: {

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

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

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

   941                     i += 2;

   942                     break;

   943                 }

   944                 case opc_ifne: {

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

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

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

   948                     i += 2;

   949                     break;

   950                 }

   951                 case opc_iflt: {

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

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

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

   955                     i += 2;

   956                     break;

   957                 }

   958                 case opc_ifle: {

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

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

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

   962                     i += 2;

   963                     break;

   964                 }

   965                 case opc_ifgt: {

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

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

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

   969                     i += 2;

   970                     break;

   971                 }

   972                 case opc_ifge: {

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

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

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

   976                     i += 2;

   977                     break;

   978                 }

   979                 case opc_ifnonnull: {

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

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

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

   983                     i += 2;

   984                     break;

   985                 }

   986                 case opc_ifnull: {

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

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

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

   990                     i += 2;

   991                     break;

   992                 }

   993                 case opc_if_icmpne:

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

   995                                    "!=", topMostLabel);

   996                     break;

   997                 case opc_if_icmplt:

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

   999                                    "<", topMostLabel);

  1000                     break;

  1001                 case opc_if_icmple:

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

  1003                                    "<=", topMostLabel);

  1004                     break;

  1005                 case opc_if_icmpgt:

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

  1007                                    ">", topMostLabel);

  1008                     break;

  1009                 case opc_if_icmpge:

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

  1011                                    ">=", topMostLabel);

  1012                     break;

  1013                 case opc_goto: {

  1014                     smapper.flush(this);

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

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

  1017                     i += 2;

  1018                     break;

  1019                 }

  1020                 case opc_lookupswitch: {

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

  1022                     break;

  1023                 }

  1024                 case opc_tableswitch: {

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

  1026                     break;

  1027                 }

  1028                 case opc_invokeinterface: {

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

  1030                     break;

  1031                 }

  1032                 case opc_invokevirtual:

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

  1034                     break;

  1035                 case opc_invokespecial:

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

  1037                     break;

  1038                 case opc_invokestatic:

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

  1040                     break;

  1041                 case opc_new: {

  1042                     int indx = readUShortArg(byteCodes, i);

  1043                     String ci = jc.getClassName(indx);

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

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

  1046                     addReference(ci);

  1047                     i += 2;

  1048                     break;

  1049                 }

  1050                 case opc_newarray:

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

  1052                     generateNewArray(atype, smapper);

  1053                     break;

  1054                 case opc_anewarray: {

  1055                     int type = readUShortArg(byteCodes, i);

  1056                     i += 2;

  1057                     generateANewArray(type, smapper);

  1058                     break;

  1059                 }

  1060                 case opc_multianewarray: {

  1061                     int type = readUShortArg(byteCodes, i);

  1062                     i += 2;

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

  1064                     break;

  1065                 }

  1066                 case opc_arraylength:

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

  1068                     break;

  1069                 case opc_lastore:

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

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

  1072                     break;

  1073                 case opc_fastore:

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

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

  1076                     break;

  1077                 case opc_dastore:

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

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

  1080                     break;

  1081                 case opc_aastore:

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

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

  1084                     break;

  1085                 case opc_iastore:

  1086                 case opc_bastore:

  1087                 case opc_castore:

  1088                 case opc_sastore:

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

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

  1091                     break;

  1092                 case opc_laload:

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

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

  1095                     break;

  1096                 case opc_faload:

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

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

  1099                     break;

  1100                 case opc_daload:

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

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

  1103                     break;

  1104                 case opc_aaload:

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

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

  1107                     break;

  1108                 case opc_iaload:

  1109                 case opc_baload:

  1110                 case opc_caload:

  1111                 case opc_saload:

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

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

  1114                     break;

  1115                 case opc_pop:

  1116                 case opc_pop2:

  1117                     smapper.pop(1);

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

  1119                     break;

  1120                 case opc_dup: {

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

  1122                     if (smapper.isDirty()) {

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

  1124                     } else {

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

  1126                     }

  1127                     break;

  1128                 }

  1129                 case opc_dup2: {

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

  1132                     if (vi1.isCategory2()) {

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

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

  1135                     } else {

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

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

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

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

  1140                     }

  1141                     break;

  1142                 }

  1143                 case opc_dup_x1: {

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

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

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

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

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

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

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

  1152                     break;

  1153                 }

  1154                 case opc_dup2_x1: {

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

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

  1158                     if (vi1.isCategory2()) {

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

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

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

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

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

  1165                     } else {

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

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

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

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

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

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

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

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

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

  1176                              vo4, vo1, vo5, vo2);

  1177                     }

  1178                     break;

  1179                 }

  1180                 case opc_dup_x2: {

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

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

  1184                     if (vi2.isCategory2()) {

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

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

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

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

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

  1191                     } else {

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

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

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

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

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

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

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

  1200                     }

  1201                     break;

  1202                 }

  1203                 case opc_dup2_x2: {

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

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

  1207                     if (vi1.isCategory2()) {

  1208                         if (vi2.isCategory2()) {

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

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

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

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

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

  1215                         } else {

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

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

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

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

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

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

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

  1224                         }

  1225                     } else {

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

  1228                         if (vi3.isCategory2()) {

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

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

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

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

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

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

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

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

  1238                                  vo4, vo1, vo5, vo2);

  1239                         } else {

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

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

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

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

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

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

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

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

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

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

  1251                                  vo5, vo1, vo6, vo2);

  1252                         }

  1253                     }

  1254                     break;

  1255                 }

  1256                 case opc_swap: {

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

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

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

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

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

  1264                              tmp, vi1, vi2);

  1265                         smapper.pop(1);

  1266                     } else {

  1267                         smapper.pop(2);

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

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

  1270                     }

  1271                     break;

  1272                 }

  1273                 case opc_bipush:

  1274                     smapper.assign(this, VarType.INTEGER,

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

  1276                     break;

  1277                 case opc_sipush:

  1278                     smapper.assign(this, VarType.INTEGER,

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

  1280                     );

  1281                     i += 2;

  1282                     break;

  1283                 case opc_getfield: {

  1284                     int indx = readUShortArg(byteCodes, i);

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

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

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

  1288                     final String mangleClassAccess = accessClass(mangleClass);

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

  1290                          smapper.getA(0),

  1291                          accessField(mangleClassAccess + "(false)",

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

  1293                     );

  1294                     i += 2;

  1295                     break;

  1296                 }

  1297                 case opc_putfield: {

  1298                     int indx = readUShortArg(byteCodes, i);

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

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

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

  1302                     final String mangleClassAccess = accessClass(mangleClass);

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

  1304                          smapper.popT(type),

  1305                          smapper.popA(),

  1306                          accessField(mangleClassAccess + "(false)",

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

  1308                     i += 2;

  1309                     break;

  1310                 }

  1311                 case opc_getstatic: {

  1312                     int indx = readUShortArg(byteCodes, i);

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

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

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

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

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

  1318                     i += 2;

  1319                     addReference(fi[0]);

  1320                     break;

  1321                 }

  1322                 case opc_putstatic: {

  1323                     int indx = readUShortArg(byteCodes, i);

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

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

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

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

  1328                          smapper.popT(type));

  1329                     i += 2;

  1330                     addReference(fi[0]);

  1331                     break;

  1332                 }

  1333                 case opc_checkcast: {

  1334                     int indx = readUShortArg(byteCodes, i);

  1335                     generateCheckcast(indx, smapper);

  1336                     i += 2;

  1337                     break;

  1338                 }

  1339                 case opc_instanceof: {

  1340                     int indx = readUShortArg(byteCodes, i);

  1341                     generateInstanceOf(indx, smapper);

  1342                     i += 2;

  1343                     break;

  1344                 }

  1345                 case opc_athrow: {

  1346                     final CharSequence v = smapper.popA();

  1347                     smapper.clear();

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

  1350                          smapper.pushA(), v);

  1351                     break;

  1352                 }

  1354                 case opc_monitorenter: {

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

  1356                     smapper.popA();

  1357                     break;

  1358                 }

  1360                 case opc_monitorexit: {

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

  1362                     smapper.popA();

  1363                     break;

  1364                 }

  1366                 case opc_wide:

  1367                     wide = true;

  1368                     break;

  1370                 default: {

  1371                     wide = false;

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

  1373                          Integer.toString(c));

  1374                 }

  1375             }

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

  1377                 generateByteCodeComment(prev, i, byteCodes);

  1378             }

  1379             if (outChanged) {

  1380                 append("\n");

  1381             }

  1382         }

  1383         if (previousTrap != null) {

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

  1385         }

  1386         if (didBranches) {

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

  1388         }

  1389         while (openBraces-- > 0) {

  1390             append('}');

  1391         }

  1392         append("\n};");

  1393     }

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

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

  1397         final String test, int topMostLabel

  1398     ) throws IOException {

  1399         mapper.flush(this);

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

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

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

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

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

  1405         return i + 2;

  1406     }

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

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

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

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

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

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

  1414     }

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

  1416         return byteCodes[offset] & 0xff;

  1417     }

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

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

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

  1422     }

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

  1424         return readUShort(byteCodes, offsetInstruction + 1);

  1425     }

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

  1428         int signed = byteCodes[offset];

  1429         byte b0 = (byte)signed;

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

  1431     }

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

  1433         return readShort(byteCodes, offsetInstruction + 1);

  1434     }

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

  1437         int i = 0;

  1438         Boolean count = null;

  1439         boolean array = false;

  1440         sig.append("__");

  1441         int firstPos = sig.length();

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

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

  1444             switch (ch) {

  1445                 case '(':

  1446                     count = true;

  1447                     continue;

  1448                 case ')':

  1449                     count = false;

  1450                     continue;

  1451                 case 'B':

  1452                 case 'C':

  1453                 case 'D':

  1454                 case 'F':

  1455                 case 'I':

  1456                 case 'J':

  1457                 case 'S':

  1458                 case 'Z':

  1459                     if (count) {

  1460                         if (array) {

  1461                             sig.append("_3");

  1462                         }

  1463                         sig.append(ch);

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

  1465                             cnt.append('1');

  1466                         } else {

  1467                             cnt.append('0');

  1468                         }

  1469                     } else {

  1470                         sig.insert(firstPos, ch);

  1471                         if (array) {

  1472                             returnType[0] = '[';

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

  1474                         } else {

  1475                             returnType[0] = ch;

  1476                         }

  1477                     }

  1478                     array = false;

  1479                     continue;

  1480                 case 'V':

  1481                     assert !count;

  1482                     returnType[0] = 'V';

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

  1484                     continue;

  1485                 case 'L':

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

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

  1488                     if (count) {

  1489                         if (array) {

  1490                             sig.append("_3");

  1491                         }

  1492                         sig.append(realSig);

  1493                         cnt.append('0');

  1494                     } else {

  1495                         sig.insert(firstPos, realSig);

  1496                         if (array) {

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

  1498                         }

  1499                         returnType[0] = 'L';

  1500                     }

  1501                     i = next + 1;

  1502                     array = false;

  1503                     continue;

  1504                 case '[':

  1505                     array = true;

  1506                     continue;

  1507                 default:

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

  1509             }

  1510         }

  1511     }

  1513     static String mangleSig(String sig) {

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

  1515     }

  1517     private static String mangleMethodName(String name) {

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

  1519         int last = name.length();

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

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

  1522             switch (ch) {

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

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

  1525             }

  1526         }

  1527         return sb.toString();

  1528     }

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

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

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

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

  1533             switch (ch) {

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

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

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

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

  1538                 default:

  1539                     if (Character.isJavaIdentifierPart(ch)) {

  1540                         sb.append(ch);

  1541                     } else {

  1542                         sb.append("_0");

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

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

  1545                             sb.append("0");

  1546                         }

  1547                         sb.append(hex);

  1548                     }

  1549                 break;

  1550             }

  1551         }

  1552         return sb.toString();

  1553     }

  1555     private static String mangleClassName(String name) {

  1556         return mangleSig(name);

  1557     }

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

  1560         StringBuilder name = new StringBuilder();

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

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

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

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

  1565         } else {

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

  1567         }

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

  1570         return name.toString();

  1571     }

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

  1574         StringBuilder name = new StringBuilder();

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

  1576         String nm= mi[1];

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

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

  1579         } else {

  1580             name.append(mangleMethodName(nm));

  1581         }

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

  1583         return name.toString();

  1584     }

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

  1587     throws IOException {

  1588         int methodIndex = readUShortArg(byteCodes, i);

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

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

  1591         StringBuilder cnt = new StringBuilder();

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

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

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

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

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

  1599         }

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

  1602             mapper.flush(this);

  1603             append("var ")

  1604                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1605                .append(" = ");

  1606         }

  1608         final String in = mi[0];

  1609         String mcn;

  1610         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1611             mcn = "java_lang_Class";

  1612         } else {

  1613             mcn = mangleClassName(in);

  1614         }

  1615         String object = accessClass(mcn) + "(false)";

  1616         if (mn.startsWith("cons_")) {

  1617             object += ".constructor";

  1618         }

  1619         append(accessStaticMethod(object, mn, mi));

  1620         if (isStatic) {

  1621             append('(');

  1622         } else {

  1623             append(".call(");

  1624         }

  1625         if (numArguments > 0) {

  1626             append(vars[0]);

  1627             for (int j = 1; j < numArguments; ++j) {

  1628                 append(", ");

  1629                 append(vars[j]);

  1630             }

  1631         }

  1632         append(");");

  1633         i += 2;

  1634         addReference(in);

  1635         return i;

  1636     }

  1637     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1638     throws IOException {

  1639         int methodIndex = readUShortArg(byteCodes, i);

  1640         String[] mi = jc.getFieldInfoName(methodIndex);

  1641         char[] returnType = { 'V' };

  1642         StringBuilder cnt = new StringBuilder();

  1643         String mn = findMethodName(mi, cnt, returnType);

  1645         final int numArguments = cnt.length() + 1;

  1646         final CharSequence[] vars = new CharSequence[numArguments];

  1648         for (int j = numArguments - 1; j >= 0; --j) {

  1649             vars[j] = mapper.popValue();

  1650         }

  1652         if (returnType[0] != 'V') {

  1653             append("var ")

  1654                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1655                .append(" = ");

  1656         }

  1658         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1659         String sep = "";

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

  1661             append(sep);

  1662             append(vars[j]);

  1663             sep = ", ";

  1664         }

  1665         append(");");

  1666         i += 2;

  1667         return i;

  1668     }

  1670     private void addReference(String cn) throws IOException {

  1671         if (requireReference(cn)) {

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

  1673         }

  1674     }

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

  1677         int arr = 0;

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

  1679             out.append('A');

  1680             d = d.substring(1);

  1681         }

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

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

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

  1685         } else {

  1686             out.append(d);

  1687         }

  1688     }

  1690     private String encodeConstant(int entryIndex) throws IOException {

  1691         String[] classRef = { null };

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

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

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

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

  1696             } else {

  1697                 addReference(classRef[0]);

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

  1699             }

  1700         }

  1701         return s;

  1702     }

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

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

  1706         if (arr == null) {

  1707             return null;

  1708         }

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

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

  1711         class P extends AnnotationParser {

  1712             public P() {

  1713                 super(false, true);

  1714             }

  1716             int cnt;

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

  1718             String body;

  1719             boolean javacall;

  1720             boolean html4j;

  1722             @Override

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

  1724                 if (type.equals(jvmType)) {

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

  1726                         body = value;

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

  1728                         args[cnt++] = value;

  1729                     } else {

  1730                         throw new IllegalArgumentException(attr);

  1731                     }

  1732                 }

  1733                 if (type.equals(htmlType)) {

  1734                     html4j = true;

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

  1736                         body = value;

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

  1738                         args[cnt++] = value;

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

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

  1741                     } else {

  1742                         throw new IllegalArgumentException(attr);

  1743                     }

  1744                 }

  1745             }

  1746         }

  1747         P p = new P();

  1748         p.parse(arr, jc);

  1749         if (p.body == null) {

  1750             return null;

  1751         }

  1752         StringBuilder cnt = new StringBuilder();

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

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

  1755         append(" = function(");

  1756         String space = "";

  1757         int index = 0;

  1758         StringBuilder toValue = new StringBuilder();

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

  1760             append(space);

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

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

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

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

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

  1766             }

  1767             index++;

  1768         }

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

  1770         append(toValue.toString());

  1771         if (p.javacall) {

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

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

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

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

  1776         } else {

  1777             append(p.body);

  1778         }

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

  1780         return mn;

  1781     }

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

  1784         StringBuilder sb = new StringBuilder();

  1785         int pos = 0;

  1786         for (;;) {

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

  1788             if (next == -1) {

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

  1790                 body = sb.toString();

  1791                 break;

  1792             }

  1793             int ident = next;

  1794             while (ident > 0) {

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

  1796                     ident++;

  1797                     break;

  1798                 }

  1799             }

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

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

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

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

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

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

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

  1809             }

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

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

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

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

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

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

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

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

  1820                 sb.append(",");

  1821             }

  1822             pos = paramBeg + 1;

  1823         }

  1824         sb = null;

  1825         pos = 0;

  1826         for (;;) {

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

  1828             if (next == -1) {

  1829                 if (sb == null) {

  1830                     return body;

  1831                 }

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

  1833                 return sb;

  1834             }

  1835             if (sb == null) {

  1836                 sb = new StringBuilder();

  1837             }

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

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

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

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

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

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

  1846             }

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

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

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

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

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

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

  1855             sb.append("(");

  1856             pos = paramBeg + 1;

  1857         }

  1858     }

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

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

  1862             params = params.substring(1);

  1863         }

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

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

  1866         }

  1867         StringBuilder sb = new StringBuilder();

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

  1869         final String rfqn = mangleClassName(fqnu);

  1870         final String rm = mangleMethodName(method);

  1871         final String srp;

  1872         {

  1873             StringBuilder pb = new StringBuilder();

  1874             int len = params.length();

  1875             int indx = 0;

  1876             while (indx < len) {

  1877                 char ch = params.charAt(indx);

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

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

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

  1881                 } else {

  1882                     pb.append(ch);

  1883                     indx++;

  1884                 }

  1885             }

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

  1887         }

  1888         final String rp = mangleSig(params);

  1889         final String mrp = mangleMethodName(rp);

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

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

  1892         if (!isStatic) {

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

  1894         }

  1895         sb.append(srp);

  1896         return sb.toString();

  1897     }

  1899     private static String className(ClassData jc) {

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

  1901         return mangleClassName(jc.getClassName());

  1902     }

  1904     private static String[] findAnnotation(

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

  1906         final String... attrNames

  1907     ) throws IOException {

  1908         if (arr == null) {

  1909             return null;

  1910         }

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

  1912         final boolean[] found = { false };

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

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

  1915             @Override

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

  1917                 if (type.equals(jvmType)) {

  1918                     found[0] = true;

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

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

  1921                             values[i] = value;

  1922                         }

  1923                     }

  1924                 }

  1925             }

  1927         };

  1928         ap.parse(arr, cd);

  1929         return found[0] ? values : null;

  1930     }

  1932     private CharSequence initField(FieldData v) {

  1933         final String is = v.getInternalSig();

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

  1935             switch (is.charAt(0)) {

  1936                 case 'S':

  1937                 case 'J':

  1938                 case 'B':

  1939                 case 'Z':

  1940                 case 'C':

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

  1942                 case 'F':

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

  1944                 default:

  1945                     throw new IllegalStateException(is);

  1946             }

  1947         }

  1948         return " = null;";

  1949     }

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

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

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

  1954             int depth;

  1956             @Override

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

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

  1959                 requireReference(slashType);

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

  1962                     append(",");

  1963                 }

  1964                 if (top) {

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

  1966                 }

  1967                 append("{\n");

  1968                 cnt[++depth] = 0;

  1969             }

  1971             @Override

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

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

  1974                 depth--;

  1975             }

  1977             @Override

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

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

  1980                     append(",\n");

  1981                 }

  1982                 cnt[++depth] = 0;

  1983                 if (attrName != null) {

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

  1985                 }

  1986                 if (type == '[') {

  1987                     append("[");

  1988                 }

  1989             }

  1991             @Override

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

  1993                 if (type == '[') {

  1994                     append("]");

  1995                 }

  1996                 depth--;

  1997             }

  1999             @Override

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

  2001             throws IOException {

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

  2003                     return;

  2004                 }

  2005                 append(value);

  2006             }

  2008             @Override

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

  2010             throws IOException {

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

  2012                 requireReference(slashType);

  2014                 final String cn = mangleClassName(slashType);

  2015                 append(accessClass(cn))

  2016                    .append("(false)['valueOf__L").

  2017                     append(cn).

  2018                     append("_2Ljava_lang_String_2']('").

  2019                     append(value).

  2020                     append("')");

  2021             }

  2022         };

  2023         ap.parse(data, cd);

  2024     }

  2026     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2027         final String name = args[indx];

  2028         if (name == null) {

  2029             return "";

  2030         }

  2031         if (name.contains(",")) {

  2032             throw new IOException("Wrong parameter with ',': " + name);

  2033         }

  2034         out.append(name);

  2035         return ",";

  2036     }

  2038     final void emitNoFlush(

  2039         StackMapper sm,

  2040         final String format, final CharSequence... params

  2041     ) throws IOException {

  2042         emitImpl(this, format, params);

  2043     }

  2044     static final void emit(

  2045         StackMapper sm,

  2046         final Appendable out,

  2047         final String format, final CharSequence... params

  2048     ) throws IOException {

  2049         sm.flush(out);

  2050         emitImpl(out, format, params);

  2051     }

  2052     static void emitImpl(final Appendable out,

  2053                              final String format,

  2054                              final CharSequence... params) throws IOException {

  2055         final int length = format.length();

  2057         int processed = 0;

  2058         int paramOffset = format.indexOf('@');

  2059         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2060             final char paramChar = format.charAt(paramOffset + 1);

  2061             if ((paramChar >= '1') && (paramChar <= '9')) {

  2062                 final int paramIndex = paramChar - '0' - 1;

  2064                 out.append(format, processed, paramOffset);

  2065                 out.append(params[paramIndex]);

  2067                 ++paramOffset;

  2068                 processed = paramOffset + 1;

  2069             }

  2071             paramOffset = format.indexOf('@', paramOffset + 1);

  2072         }

  2074         out.append(format, processed, length);

  2075     }

  2077     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2078         append("} catch (e) {\n");

  2079         int finallyPC = -1;

  2080         for (TrapData e : traps) {

  2081             if (e == null) {

  2082                 break;

  2083             }

  2084             if (e.catch_cpx != 0) { //not finally

  2085                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2086                 addReference(classInternalName);

  2087                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2088                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2089                 append("var stA0 = e;");

  2090                 goTo(this, current, e.handler_pc, topMostLabel);

  2091                 append("}\n");

  2092             } else {

  2093                 finallyPC = e.handler_pc;

  2094             }

  2095         }

  2096         if (finallyPC == -1) {

  2097             append("throw e;");

  2098         } else {

  2099             append("var stA0 = e;");

  2100             goTo(this, current, finallyPC, topMostLabel);

  2101         }

  2102         append("\n}");

  2103     }

  2105     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2106         if (to < current) {

  2107             if (canBack < to) {

  2108                 out.append("{ gt = 0; continue X_" + to + "; }");

  2109             } else {

  2110                 out.append("{ gt = " + to + "; continue X_0; }");

  2111             }

  2112         } else {

  2113             out.append("{ gt = " + to + "; break IF; }");

  2114         }

  2115     }

  2117     private static void emitIf(

  2118         StackMapper sm,

  2119         Appendable out, String pattern,

  2120         CharSequence param,

  2121         int current, int to, int canBack

  2122     ) throws IOException {

  2123         sm.flush(out);

  2124         emitImpl(out, pattern, param);

  2125         goTo(out, current, to, canBack);

  2126     }

  2128     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2129         String jvmType;

  2130         switch (atype) {

  2131             case 4: jvmType = "[Z"; break;

  2132             case 5: jvmType = "[C"; break;

  2133             case 6: jvmType = "[F"; break;

  2134             case 7: jvmType = "[D"; break;

  2135             case 8: jvmType = "[B"; break;

  2136             case 9: jvmType = "[S"; break;

  2137             case 10: jvmType = "[I"; break;

  2138             case 11: jvmType = "[J"; break;

  2139             default: throw new IllegalStateException("Array type: " + atype);

  2140         }

  2141         emit(smapper, this,

  2142             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2143              smapper.popI(), smapper.pushA(), jvmType);

  2144     }

  2146     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2147         String typeName = jc.getClassName(type);

  2148         String ref = "null";

  2149         if (typeName.startsWith("[")) {

  2150             typeName = "'[" + typeName + "'";

  2151         } else {

  2152             ref = "vm." + mangleClassName(typeName);

  2153             typeName = "'[L" + typeName + ";'";

  2154         }

  2155         emit(smapper, this,

  2156             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2157              smapper.popI(), smapper.pushA(), typeName, ref);

  2158     }

  2160     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2161         String typeName = jc.getClassName(type);

  2162         int dim = readUByte(byteCodes, ++i);

  2163         StringBuilder dims = new StringBuilder();

  2164         dims.append('[');

  2165         for (int d = 0; d < dim; d++) {

  2166             if (d != 0) {

  2167                 dims.insert(1, ",");

  2168             }

  2169             dims.insert(1, smapper.popI());

  2170         }

  2171         dims.append(']');

  2172         String fn = "null";

  2173         if (typeName.charAt(dim) == 'L') {

  2174             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2175         }

  2176         emit(smapper, this,

  2177             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2178              dims.toString(), smapper.pushA(), typeName, fn

  2179         );

  2180         return i;

  2181     }

  2183     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2184         int table = i / 4 * 4 + 4;

  2185         int dflt = i + readInt4(byteCodes, table);

  2186         table += 4;

  2187         int low = readInt4(byteCodes, table);

  2188         table += 4;

  2189         int high = readInt4(byteCodes, table);

  2190         table += 4;

  2191         final CharSequence swVar = smapper.popValue();

  2192         smapper.flush(this);

  2193         append("switch (").append(swVar).append(") {\n");

  2194         while (low <= high) {

  2195             int offset = i + readInt4(byteCodes, table);

  2196             table += 4;

  2197             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2198             low++;

  2199         }

  2200         append("  default: ");

  2201         goTo(this, i, dflt, topMostLabel);

  2202         append("\n}");

  2203         i = table - 1;

  2204         return i;

  2205     }

  2207     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2208         int table = i / 4 * 4 + 4;

  2209         int dflt = i + readInt4(byteCodes, table);

  2210         table += 4;

  2211         int n = readInt4(byteCodes, table);

  2212         table += 4;

  2213         final CharSequence swVar = smapper.popValue();

  2214         smapper.flush(this);

  2215         append("switch (").append(swVar).append(") {\n");

  2216         while (n-- > 0) {

  2217             int cnstnt = readInt4(byteCodes, table);

  2218             table += 4;

  2219             int offset = i + readInt4(byteCodes, table);

  2220             table += 4;

  2221             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2222         }

  2223         append("  default: ");

  2224         goTo(this, i, dflt, topMostLabel);

  2225         append("\n}");

  2226         i = table - 1;

  2227         return i;

  2228     }

  2230     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2231         String type = jc.getClassName(indx);

  2232         if (!type.startsWith("[")) {

  2233             emit(smapper, this,

  2234                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2235                  smapper.popA(), smapper.pushI(),

  2236                  type.replace('/', '_'));

  2237         } else {

  2238             int cnt = 0;

  2239             while (type.charAt(cnt) == '[') {

  2240                 cnt++;

  2241             }

  2242             if (type.charAt(cnt) == 'L') {

  2243                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2244                 emit(smapper, this,

  2245                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2246                     smapper.popA(), smapper.pushI(),

  2247                     type, "" + cnt

  2248                 );

  2249             } else {

  2250                 emit(smapper, this,

  2251                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2252                     smapper.popA(), smapper.pushI(), type

  2253                 );

  2254             }

  2255         }

  2256     }

  2258     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2259         String type = jc.getClassName(indx);

  2260         if (!type.startsWith("[")) {

  2261             emitNoFlush(smapper,

  2262                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2263                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2264         } else {

  2265             int cnt = 0;

  2266             while (type.charAt(cnt) == '[') {

  2267                 cnt++;

  2268             }

  2269             if (type.charAt(cnt) == 'L') {

  2270                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2271                 emitNoFlush(smapper,

  2272                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

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

  2274                 );

  2275             } else {

  2276                 emitNoFlush(smapper,

  2277                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2278                      smapper.getT(0, VarType.REFERENCE, false), type

  2279                 );

  2280             }

  2281         }

  2282     }

  2284     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2285         for (int j = prev; j <= i; j++) {

  2286             append(" ");

  2287             final int cc = readUByte(byteCodes, j);

  2288             append(Integer.toString(cc));

  2289         }

  2290     }

  2291 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Mon, 11 Aug 2014 18:17:18 +0200
changeset 1663	03f1dd008e83
parent 1613	81926ff11587
child 1664	223db336eed8
permissions	-rw-r--r--