hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@bafa63ac44a2

     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 static org.apidesign.vm4brwsr.ByteCodeParser.*;

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

    25  *

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

    27  */

    28 abstract class ByteCodeToJavaScript implements Appendable {

    29     private ClassData jc;

    30     private final Appendable out;

    31     private boolean outChanged;

    32     private boolean callbacks;

    34     protected ByteCodeToJavaScript(Appendable out) {

    35         this.out = out;

    36     }

    38     @Override

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

    40         out.append(csq);

    41         outChanged = true;

    42         return this;

    43     }

    45     @Override

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

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

    48         outChanged = true;

    49         return this;

    50     }

    52     @Override

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

    54         out.append(c);

    55         outChanged = true;

    56         return this;

    57     }

    59     /* Collects additional required resources.

    60      *

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

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

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

    64      */

    65     protected abstract boolean requireReference(String internalClassName);

    67     /*

    68      * @param resourcePath name of resources to read

    69      */

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

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

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

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

    75      *

    76      * @param className suggested name of the class

    77      */

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

    79         return className + " = ";

    80     }

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

    82         return classOperation;

    83     }

    85     protected String accessField(String object, String mangledName,

    86                                  String[] fieldInfoName) throws IOException {

    87         return object + "." + mangledName;

    88     }

    90     protected String accessStaticMethod(

    91                              String object,

    92                              String mangledName,

    93                              String[] fieldInfoName) throws IOException {

    94         return object + "." + mangledName;

    95     }

    97     protected String accessVirtualMethod(

    98                              String object,

    99                              String mangledName,

   100                              String[] fieldInfoName) throws IOException {

   101         return object + "." + mangledName;

   102     }

   104     protected void declaredClass(ClassData classData, String mangledName)

   105             throws IOException {

   106     }

   108     protected void declaredField(FieldData fieldData,

   109                                  String destObject,

   110                                  String mangledName) throws IOException {

   111     }

   113     protected void declaredMethod(MethodData methodData,

   114                                   String destObject,

   115                                   String mangledName) throws IOException {

   116     }

   118     /** Prints out a debug message.

   119      *

   120      * @param msg the message

   121      * @return true if the message has been printed

   122      * @throws IOException

   123      */

   124     boolean debug(String msg) throws IOException {

   125         append(msg);

   126         return true;

   127     }

   129     /**

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

   131      *

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

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

   134      *

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

   136      */

   138     public String compile(InputStream classFile) throws IOException {

   139         return compile(new ClassData(classFile));

   140     }

   142     protected String compile(ClassData classData) throws IOException {

   143         this.jc = classData;

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

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

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

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

   148             );

   149         }

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

   151         {

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

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

   154                 "resource", "processByteCode"

   155             );

   156             if (arr != null) {

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

   158                     requireScript(arr[0]);

   159                 }

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

   161                     return null;

   162                 }

   163             }

   164         }

   165         {

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

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

   168                 "value"

   169             );

   170             if (arr != null) {

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

   172                     requireScript(arr[0]);

   173                 } else {

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

   175                     requireScript(

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

   177                     );

   178                 }

   179             }

   180         }

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

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

   183             "container", "prototype"

   184         );

   185         StringArray toInitilize = new StringArray();

   186         final String className = className(jc);

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

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

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

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

   191         if (proto == null) {

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

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

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

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

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

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

   198         } else {

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

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

   201                 proto[0] = "p";

   202             }

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

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

   205         }

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

   207             if (v.isStatic()) {

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

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

   210                         continue;

   211                     }

   212                 }

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

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

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

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

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

   218             } else {

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

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

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

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

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

   224                    .append("; };");

   225             }

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

   228         }

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

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

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

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

   233                 "name", "value"

   234             );

   235             if (only != null) {

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

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

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

   239                 }

   240                 continue;

   241             }

   242             String destObject;

   243             String mn;

   244             append("\n    ");

   245             if (m.isStatic()) {

   246                 destObject = "c";

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

   248             } else {

   249                 if (m.isConstructor()) {

   250                     destObject = "CLS";

   251                     mn = generateInstanceMethod(destObject, m);

   252                 } else {

   253                     destObject = "c";

   254                     mn = generateInstanceMethod(destObject, m);

   255                 }

   256             }

   257             declaredMethod(m, destObject, mn);

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

   259             if (runAnno != null) {

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

   261                 generateAnno(jc, runAnno);

   262                 append("\n    };");

   263             }

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

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

   266         }

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

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

   269         String instOfName = "$instOf_" + className;

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

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

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

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

   274             requireReference(superInterface);

   275         }

   276         append("\n    }");

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

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

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

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

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

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

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

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

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

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

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

   288         if (classAnno != null) {

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

   290             generateAnno(jc, classAnno);

   291             append("\n    };");

   292         }

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

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

   295         }

   296         append("\n  }");

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

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

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

   300         append("\n    }");

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

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

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

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

   305                 "name", "value"

   306             );

   307             if (only != null) {

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

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

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

   311                 }

   312                 continue;

   313             }

   314             if (!v.isStatic()) {

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

   316                     append(className).append('_').

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

   318             }

   319         }

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

   321         append("\n  }");

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

   323         append("\n};");

   325         declaredClass(jc, className);

   327 //        StringBuilder sb = new StringBuilder();

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

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

   330 //        }

   331         return "";

   332     }

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

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

   335         if (jsb != null) {

   336             return jsb;

   337         }

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

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

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

   341         }

   342         generateMethod(destObject, mn, m);

   343         return mn;

   344     }

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

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

   348         if (jsb != null) {

   349             return jsb;

   350         }

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

   352         generateMethod(destObject, mn, m);

   353         return mn;

   354     }

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

   357             throws IOException {

   358         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   359         TrapDataIterator trap = m.getTrapDataIterator();

   360         final LocalsMapper lmapper =

   361                 new LocalsMapper(stackMapIterator.getArguments());

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

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

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

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

   368         if (byteCodes == null) {

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

   370                .append(jc.getClassName()).append('.')

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

   372             append("};");

   373             return;

   374         }

   376         final StackMapper smapper = new StackMapper();

   378         if (!m.isStatic()) {

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

   380         }

   382         int lastStackFrame;

   383         TrapData[] previousTrap = null;

   384         boolean wide = false;

   385         boolean didBranches;

   386         if (stackMapIterator.isEmpty()) {

   387             didBranches = false;

   388             lastStackFrame = 0;

   389         } else {

   390             didBranches = true;

   391             lastStackFrame = -1;

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

   393         }

   395         int openBraces = 0;

   396         int topMostLabel = 0;

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

   398             int prev = i;

   399             outChanged = false;

   400             stackMapIterator.advanceTo(i);

   401             boolean changeInCatch = trap.advanceTo(i);

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

   403                 if (previousTrap != null) {

   404                     generateCatch(previousTrap, i, topMostLabel);

   405                     previousTrap = null;

   406                 }

   407             }

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

   409                 smapper.flush(this);

   410                 if (i != 0) {

   411                     append("    }\n");

   412                 }

   413                 if (openBraces > 64) {

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

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

   416                     }

   417                     openBraces = 1;

   418                     topMostLabel = i;

   419                 }

   421                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   425                 openBraces++;

   426                 changeInCatch = true;

   427             } else {

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

   429             }

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

   431                 append("try {");

   432                 previousTrap = trap.current();

   433             }

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

   435             switch (c) {

   436                 case opc_aload_0:

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

   438                     break;

   439                 case opc_iload_0:

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

   441                     break;

   442                 case opc_lload_0:

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

   444                     break;

   445                 case opc_fload_0:

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

   447                     break;

   448                 case opc_dload_0:

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

   450                     break;

   451                 case opc_aload_1:

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

   453                     break;

   454                 case opc_iload_1:

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

   456                     break;

   457                 case opc_lload_1:

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

   459                     break;

   460                 case opc_fload_1:

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

   462                     break;

   463                 case opc_dload_1:

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

   465                     break;

   466                 case opc_aload_2:

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

   468                     break;

   469                 case opc_iload_2:

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

   471                     break;

   472                 case opc_lload_2:

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

   474                     break;

   475                 case opc_fload_2:

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

   477                     break;

   478                 case opc_dload_2:

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

   480                     break;

   481                 case opc_aload_3:

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

   483                     break;

   484                 case opc_iload_3:

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

   486                     break;

   487                 case opc_lload_3:

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

   489                     break;

   490                 case opc_fload_3:

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

   492                     break;

   493                 case opc_dload_3:

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

   495                     break;

   496                 case opc_iload: {

   497                     ++i;

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

   499                                           : readUByte(byteCodes, i);

   500                     wide = false;

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

   502                     break;

   503                 }

   504                 case opc_lload: {

   505                     ++i;

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

   507                                           : readUByte(byteCodes, i);

   508                     wide = false;

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

   510                     break;

   511                 }

   512                 case opc_fload: {

   513                     ++i;

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

   515                                           : readUByte(byteCodes, i);

   516                     wide = false;

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

   518                     break;

   519                 }

   520                 case opc_dload: {

   521                     ++i;

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

   523                                           : readUByte(byteCodes, i);

   524                     wide = false;

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

   526                     break;

   527                 }

   528                 case opc_aload: {

   529                     ++i;

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

   531                                           : readUByte(byteCodes, i);

   532                     wide = false;

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

   534                     break;

   535                 }

   536                 case opc_istore: {

   537                     ++i;

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

   539                                           : readUByte(byteCodes, i);

   540                     wide = false;

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

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

   543                     break;

   544                 }

   545                 case opc_lstore: {

   546                     ++i;

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

   548                                           : readUByte(byteCodes, i);

   549                     wide = false;

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

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

   552                     break;

   553                 }

   554                 case opc_fstore: {

   555                     ++i;

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

   557                                           : readUByte(byteCodes, i);

   558                     wide = false;

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

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

   561                     break;

   562                 }

   563                 case opc_dstore: {

   564                     ++i;

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

   566                                           : readUByte(byteCodes, i);

   567                     wide = false;

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

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

   570                     break;

   571                 }

   572                 case opc_astore: {

   573                     ++i;

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

   575                                           : readUByte(byteCodes, i);

   576                     wide = false;

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

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

   579                     break;

   580                 }

   581                 case opc_astore_0:

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

   583                     break;

   584                 case opc_istore_0:

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

   586                     break;

   587                 case opc_lstore_0:

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

   589                     break;

   590                 case opc_fstore_0:

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

   592                     break;

   593                 case opc_dstore_0:

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

   595                     break;

   596                 case opc_astore_1:

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

   598                     break;

   599                 case opc_istore_1:

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

   601                     break;

   602                 case opc_lstore_1:

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

   604                     break;

   605                 case opc_fstore_1:

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

   607                     break;

   608                 case opc_dstore_1:

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

   610                     break;

   611                 case opc_astore_2:

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

   613                     break;

   614                 case opc_istore_2:

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

   616                     break;

   617                 case opc_lstore_2:

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

   619                     break;

   620                 case opc_fstore_2:

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

   622                     break;

   623                 case opc_dstore_2:

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

   625                     break;

   626                 case opc_astore_3:

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

   628                     break;

   629                 case opc_istore_3:

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

   631                     break;

   632                 case opc_lstore_3:

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

   634                     break;

   635                 case opc_fstore_3:

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

   637                     break;

   638                 case opc_dstore_3:

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

   640                     break;

   641                 case opc_iadd:

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

   643                     break;

   644                 case opc_ladd:

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

   646                     break;

   647                 case opc_fadd:

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

   649                     break;

   650                 case opc_dadd:

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

   652                     break;

   653                 case opc_isub:

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

   655                     break;

   656                 case opc_lsub:

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

   658                     break;

   659                 case opc_fsub:

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

   661                     break;

   662                 case opc_dsub:

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

   664                     break;

   665                 case opc_imul:

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

   667                     break;

   668                 case opc_lmul:

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

   670                     break;

   671                 case opc_fmul:

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

   673                     break;

   674                 case opc_dmul:

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

   676                     break;

   677                 case opc_idiv:

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

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

   680                     break;

   681                 case opc_ldiv:

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

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

   684                     break;

   685                 case opc_fdiv:

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

   687                     break;

   688                 case opc_ddiv:

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

   690                     break;

   691                 case opc_irem:

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

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

   694                     break;

   695                 case opc_lrem:

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

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

   698                     break;

   699                 case opc_frem:

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

   701                     break;

   702                 case opc_drem:

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

   704                     break;

   705                 case opc_iand:

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

   707                     break;

   708                 case opc_land:

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

   710                     break;

   711                 case opc_ior:

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

   713                     break;

   714                 case opc_lor:

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

   716                     break;

   717                 case opc_ixor:

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

   719                     break;

   720                 case opc_lxor:

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

   722                     break;

   723                 case opc_ineg:

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

   725                     break;

   726                 case opc_lneg:

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

   728                     break;

   729                 case opc_fneg:

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

   731                     break;

   732                 case opc_dneg:

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

   734                     break;

   735                 case opc_ishl:

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

   737                     break;

   738                 case opc_lshl:

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

   740                     break;

   741                 case opc_ishr:

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

   743                     break;

   744                 case opc_lshr:

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

   746                     break;

   747                 case opc_iushr:

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

   749                     break;

   750                 case opc_lushr:

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

   752                     break;

   753                 case opc_iinc: {

   754                     ++i;

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

   756                                              : readUByte(byteCodes, i);

   757                     ++i;

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

   759                                             : byteCodes[i];

   760                     wide = false;

   761                     if (incrBy == 1) {

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

   763                     } else {

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

   765                              lmapper.getI(varIndx),

   766                              Integer.toString(incrBy));

   767                     }

   768                     break;

   769                 }

   770                 case opc_return:

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

   772                     break;

   773                 case opc_ireturn:

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

   775                     break;

   776                 case opc_lreturn:

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

   778                     break;

   779                 case opc_freturn:

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

   781                     break;

   782                 case opc_dreturn:

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

   784                     break;

   785                 case opc_areturn:

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

   787                     break;

   788                 case opc_i2l:

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

   790                     break;

   791                 case opc_i2f:

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

   793                     break;

   794                 case opc_i2d:

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

   796                     break;

   797                 case opc_l2i:

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

   799                     break;

   800                     // max int check?

   801                 case opc_l2f:

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

   803                     break;

   804                 case opc_l2d:

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

   806                     break;

   807                 case opc_f2d:

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

   809                          smapper.getF(0));

   810                     break;

   811                 case opc_d2f:

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

   813                          smapper.getD(0));

   814                     break;

   815                 case opc_f2i:

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

   817                          smapper.getF(0));

   818                     break;

   819                 case opc_f2l:

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

   821                          smapper.getF(0));

   822                     break;

   823                 case opc_d2i:

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

   825                          smapper.getD(0));

   826                     break;

   827                 case opc_d2l:

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

   829                     break;

   830                 case opc_i2b:

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

   832                     break;

   833                 case opc_i2c:

   834                     break;

   835                 case opc_i2s:

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

   837                     break;

   838                 case opc_aconst_null:

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

   840                     break;

   841                 case opc_iconst_m1:

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

   843                     break;

   844                 case opc_iconst_0:

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

   846                     break;

   847                 case opc_dconst_0:

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

   849                     break;

   850                 case opc_lconst_0:

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

   852                     break;

   853                 case opc_fconst_0:

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

   855                     break;

   856                 case opc_iconst_1:

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

   858                     break;

   859                 case opc_lconst_1:

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

   861                     break;

   862                 case opc_fconst_1:

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

   864                     break;

   865                 case opc_dconst_1:

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

   867                     break;

   868                 case opc_iconst_2:

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

   870                     break;

   871                 case opc_fconst_2:

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

   873                     break;

   874                 case opc_iconst_3:

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

   876                     break;

   877                 case opc_iconst_4:

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

   879                     break;

   880                 case opc_iconst_5:

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

   882                     break;

   883                 case opc_ldc: {

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

   885                     String v = encodeConstant(indx);

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

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

   888                     break;

   889                 }

   890                 case opc_ldc_w:

   891                 case opc_ldc2_w: {

   892                     int indx = readUShortArg(byteCodes, i);

   893                     i += 2;

   894                     String v = encodeConstant(indx);

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

   896                     if (type == VarType.LONG) {

   897                         final Long lv = new Long(v);

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

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

   900                         if (hi == 0) {

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

   902                         } else {

   903                             smapper.assign(this, VarType.LONG,

   904                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   905                                     Integer.toHexString(low) + ")"

   906                             );

   907                         }

   908                     } else {

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

   910                     }

   911                     break;

   912                 }

   913                 case opc_lcmp:

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

   915                     break;

   916                 case opc_fcmpl:

   917                 case opc_fcmpg:

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

   919                     break;

   920                 case opc_dcmpl:

   921                 case opc_dcmpg:

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

   923                     break;

   924                 case opc_if_acmpeq:

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

   926                                    "===", topMostLabel);

   927                     break;

   928                 case opc_if_acmpne:

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

   930                                    "!==", topMostLabel);

   931                     break;

   932                 case opc_if_icmpeq:

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

   934                                    "==", topMostLabel);

   935                     break;

   936                 case opc_ifeq: {

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

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

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

   940                     i += 2;

   941                     break;

   942                 }

   943                 case opc_ifne: {

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

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

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

   947                     i += 2;

   948                     break;

   949                 }

   950                 case opc_iflt: {

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

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

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

   954                     i += 2;

   955                     break;

   956                 }

   957                 case opc_ifle: {

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

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

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

   961                     i += 2;

   962                     break;

   963                 }

   964                 case opc_ifgt: {

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

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

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

   968                     i += 2;

   969                     break;

   970                 }

   971                 case opc_ifge: {

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

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

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

   975                     i += 2;

   976                     break;

   977                 }

   978                 case opc_ifnonnull: {

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

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

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

   982                     i += 2;

   983                     break;

   984                 }

   985                 case opc_ifnull: {

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

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

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

   989                     i += 2;

   990                     break;

   991                 }

   992                 case opc_if_icmpne:

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

   994                                    "!=", topMostLabel);

   995                     break;

   996                 case opc_if_icmplt:

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

   998                                    "<", topMostLabel);

   999                     break;

  1000                 case opc_if_icmple:

  1001                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1002                                    "<=", topMostLabel);

  1003                     break;

  1004                 case opc_if_icmpgt:

  1005                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1006                                    ">", topMostLabel);

  1007                     break;

  1008                 case opc_if_icmpge:

  1009                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1010                                    ">=", topMostLabel);

  1011                     break;

  1012                 case opc_goto: {

  1013                     smapper.flush(this);

  1014                     int indx = i + readShortArg(byteCodes, i);

  1015                     goTo(this, i, indx, topMostLabel);

  1016                     i += 2;

  1017                     break;

  1018                 }

  1019                 case opc_lookupswitch: {

  1020                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1021                     break;

  1022                 }

  1023                 case opc_tableswitch: {

  1024                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1025                     break;

  1026                 }

  1027                 case opc_invokeinterface: {

  1028                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1029                     break;

  1030                 }

  1031                 case opc_invokevirtual:

  1032                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1033                     break;

  1034                 case opc_invokespecial:

  1035                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1036                     break;

  1037                 case opc_invokestatic:

  1038                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1039                     break;

  1040                 case opc_new: {

  1041                     int indx = readUShortArg(byteCodes, i);

  1042                     String ci = jc.getClassName(indx);

  1043                     emit(smapper, this, "var @1 = new @2;",

  1044                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1045                     addReference(ci);

  1046                     i += 2;

  1047                     break;

  1048                 }

  1049                 case opc_newarray:

  1050                     int atype = readUByte(byteCodes, ++i);

  1051                     generateNewArray(atype, smapper);

  1052                     break;

  1053                 case opc_anewarray: {

  1054                     int type = readUShortArg(byteCodes, i);

  1055                     i += 2;

  1056                     generateANewArray(type, smapper);

  1057                     break;

  1058                 }

  1059                 case opc_multianewarray: {

  1060                     int type = readUShortArg(byteCodes, i);

  1061                     i += 2;

  1062                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1063                     break;

  1064                 }

  1065                 case opc_arraylength:

  1066                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1067                     break;

  1068                 case opc_lastore:

  1069                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1070                          smapper.popL(), smapper.popI(), smapper.popA());

  1071                     break;

  1072                 case opc_fastore:

  1073                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1074                          smapper.popF(), smapper.popI(), smapper.popA());

  1075                     break;

  1076                 case opc_dastore:

  1077                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1078                          smapper.popD(), smapper.popI(), smapper.popA());

  1079                     break;

  1080                 case opc_aastore:

  1081                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1082                          smapper.popA(), smapper.popI(), smapper.popA());

  1083                     break;

  1084                 case opc_iastore:

  1085                 case opc_bastore:

  1086                 case opc_castore:

  1087                 case opc_sastore:

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

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

  1090                     break;

  1091                 case opc_laload:

  1092                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1093                          smapper.popI(), smapper.getA(0));

  1094                     break;

  1095                 case opc_faload:

  1096                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1097                          smapper.popI(), smapper.getA(0));

  1098                     break;

  1099                 case opc_daload:

  1100                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1101                          smapper.popI(), smapper.getA(0));

  1102                     break;

  1103                 case opc_aaload:

  1104                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1105                          smapper.popI(), smapper.getA(0));

  1106                     break;

  1107                 case opc_iaload:

  1108                 case opc_baload:

  1109                 case opc_caload:

  1110                 case opc_saload:

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

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

  1113                     break;

  1114                 case opc_pop:

  1115                 case opc_pop2:

  1116                     smapper.pop(1);

  1117                     debug("/* pop */");

  1118                     break;

  1119                 case opc_dup: {

  1120                     final Variable v = smapper.get(0);

  1121                     if (smapper.isDirty()) {

  1122                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1123                     } else {

  1124                         smapper.assign(this, v.getType(), v);

  1125                     }

  1126                     break;

  1127                 }

  1128                 case opc_dup2: {

  1129                     final Variable vi1 = smapper.get(0);

  1131                     if (vi1.isCategory2()) {

  1132                         emit(smapper, this, "var @1 = @2;",

  1133                              smapper.pushT(vi1.getType()), vi1);

  1134                     } else {

  1135                         final Variable vi2 = smapper.get(1);

  1136                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1137                              smapper.pushT(vi2.getType()), vi2,

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

  1139                     }

  1140                     break;

  1141                 }

  1142                 case opc_dup_x1: {

  1143                     final Variable vi1 = smapper.pop(this);

  1144                     final Variable vi2 = smapper.pop(this);

  1145                     final Variable vo3 = smapper.pushT(vi1.getType());

  1146                     final Variable vo2 = smapper.pushT(vi2.getType());

  1147                     final Variable vo1 = smapper.pushT(vi1.getType());

  1149                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1150                          vo1, vi1, vo2, vi2, vo3, vo1);

  1151                     break;

  1152                 }

  1153                 case opc_dup2_x1: {

  1154                     final Variable vi1 = smapper.pop(this);

  1155                     final Variable vi2 = smapper.pop(this);

  1157                     if (vi1.isCategory2()) {

  1158                         final Variable vo3 = smapper.pushT(vi1.getType());

  1159                         final Variable vo2 = smapper.pushT(vi2.getType());

  1160                         final Variable vo1 = smapper.pushT(vi1.getType());

  1162                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1163                              vo1, vi1, vo2, vi2, vo3, vo1);

  1164                     } else {

  1165                         final Variable vi3 = smapper.pop(this);

  1166                         final Variable vo5 = smapper.pushT(vi2.getType());

  1167                         final Variable vo4 = smapper.pushT(vi1.getType());

  1168                         final Variable vo3 = smapper.pushT(vi3.getType());

  1169                         final Variable vo2 = smapper.pushT(vi2.getType());

  1170                         final Variable vo1 = smapper.pushT(vi1.getType());

  1172                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1173                              vo1, vi1, vo2, vi2, vo3, vi3);

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

  1175                              vo4, vo1, vo5, vo2);

  1176                     }

  1177                     break;

  1178                 }

  1179                 case opc_dup_x2: {

  1180                     final Variable vi1 = smapper.pop(this);

  1181                     final Variable vi2 = smapper.pop(this);

  1183                     if (vi2.isCategory2()) {

  1184                         final Variable vo3 = smapper.pushT(vi1.getType());

  1185                         final Variable vo2 = smapper.pushT(vi2.getType());

  1186                         final Variable vo1 = smapper.pushT(vi1.getType());

  1188                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1189                              vo1, vi1, vo2, vi2, vo3, vo1);

  1190                     } else {

  1191                         final Variable vi3 = smapper.pop(this);

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

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

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

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

  1197                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1198                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1199                     }

  1200                     break;

  1201                 }

  1202                 case opc_dup2_x2: {

  1203                     final Variable vi1 = smapper.pop(this);

  1204                     final Variable vi2 = smapper.pop(this);

  1206                     if (vi1.isCategory2()) {

  1207                         if (vi2.isCategory2()) {

  1208                             final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1214                         } else {

  1215                             final Variable vi3 = smapper.pop(this);

  1216                             final Variable vo4 = smapper.pushT(vi1.getType());

  1217                             final Variable vo3 = smapper.pushT(vi3.getType());

  1218                             final Variable vo2 = smapper.pushT(vi2.getType());

  1219                             final Variable vo1 = smapper.pushT(vi1.getType());

  1221                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1222                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1223                         }

  1224                     } else {

  1225                         final Variable vi3 = smapper.pop(this);

  1227                         if (vi3.isCategory2()) {

  1228                             final Variable vo5 = smapper.pushT(vi2.getType());

  1229                             final Variable vo4 = smapper.pushT(vi1.getType());

  1230                             final Variable vo3 = smapper.pushT(vi3.getType());

  1231                             final Variable vo2 = smapper.pushT(vi2.getType());

  1232                             final Variable vo1 = smapper.pushT(vi1.getType());

  1234                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1235                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1236                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1237                                  vo4, vo1, vo5, vo2);

  1238                         } else {

  1239                             final Variable vi4 = smapper.pop(this);

  1240                             final Variable vo6 = smapper.pushT(vi2.getType());

  1241                             final Variable vo5 = smapper.pushT(vi1.getType());

  1242                             final Variable vo4 = smapper.pushT(vi4.getType());

  1243                             final Variable vo3 = smapper.pushT(vi3.getType());

  1244                             final Variable vo2 = smapper.pushT(vi2.getType());

  1245                             final Variable vo1 = smapper.pushT(vi1.getType());

  1247                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1248                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1249                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1250                                  vo5, vo1, vo6, vo2);

  1251                         }

  1252                     }

  1253                     break;

  1254                 }

  1255                 case opc_swap: {

  1256                     final Variable vi1 = smapper.get(0);

  1257                     final Variable vi2 = smapper.get(1);

  1259                     if (vi1.getType() == vi2.getType()) {

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

  1262                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1263                              tmp, vi1, vi2);

  1264                         smapper.pop(1);

  1265                     } else {

  1266                         smapper.pop(2);

  1267                         smapper.pushT(vi1.getType());

  1268                         smapper.pushT(vi2.getType());

  1269                     }

  1270                     break;

  1271                 }

  1272                 case opc_bipush:

  1273                     smapper.assign(this, VarType.INTEGER,

  1274                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1275                     break;

  1276                 case opc_sipush:

  1277                     smapper.assign(this, VarType.INTEGER,

  1278                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1279                     );

  1280                     i += 2;

  1281                     break;

  1282                 case opc_getfield: {

  1283                     int indx = readUShortArg(byteCodes, i);

  1284                     String[] fi = jc.getFieldInfoName(indx);

  1285                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1286                     final String mangleClass = mangleClassName(fi[0]);

  1287                     final String mangleClassAccess = accessClass(mangleClass);

  1288                     smapper.replace(this, type, "@2.call(@1)",

  1289                          smapper.getA(0),

  1290                          accessField(mangleClassAccess + "(false)",

  1291                                      "_" + fi[1], fi)

  1292                     );

  1293                     i += 2;

  1294                     break;

  1295                 }

  1296                 case opc_putfield: {

  1297                     int indx = readUShortArg(byteCodes, i);

  1298                     String[] fi = jc.getFieldInfoName(indx);

  1299                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1300                     final String mangleClass = mangleClassName(fi[0]);

  1301                     final String mangleClassAccess = accessClass(mangleClass);

  1302                     emit(smapper, this, "@3.call(@2, @1);",

  1303                          smapper.popT(type),

  1304                          smapper.popA(),

  1305                          accessField(mangleClassAccess + "(false)",

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

  1307                     i += 2;

  1308                     break;

  1309                 }

  1310                 case opc_getstatic: {

  1311                     int indx = readUShortArg(byteCodes, i);

  1312                     String[] fi = jc.getFieldInfoName(indx);

  1313                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1314                     String ac = accessClass(mangleClassName(fi[0]));

  1315                     smapper.assign(this, type, ac + "(false)._" + fi[1] + "()");

  1316                     i += 2;

  1317                     addReference(fi[0]);

  1318                     break;

  1319                 }

  1320                 case opc_putstatic: {

  1321                     int indx = readUShortArg(byteCodes, i);

  1322                     String[] fi = jc.getFieldInfoName(indx);

  1323                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1324                     emit(smapper, this, "@1(false)._@2(@3);",

  1325                          accessClass(mangleClassName(fi[0])), fi[1],

  1326                          smapper.popT(type));

  1327                     i += 2;

  1328                     addReference(fi[0]);

  1329                     break;

  1330                 }

  1331                 case opc_checkcast: {

  1332                     int indx = readUShortArg(byteCodes, i);

  1333                     generateCheckcast(indx, smapper);

  1334                     i += 2;

  1335                     break;

  1336                 }

  1337                 case opc_instanceof: {

  1338                     int indx = readUShortArg(byteCodes, i);

  1339                     generateInstanceOf(indx, smapper);

  1340                     i += 2;

  1341                     break;

  1342                 }

  1343                 case opc_athrow: {

  1344                     final CharSequence v = smapper.popA();

  1345                     smapper.clear();

  1347                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1348                          smapper.pushA(), v);

  1349                     break;

  1350                 }

  1352                 case opc_monitorenter: {

  1353                     debug("/* monitor enter */");

  1354                     smapper.popA();

  1355                     break;

  1356                 }

  1358                 case opc_monitorexit: {

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

  1360                     smapper.popA();

  1361                     break;

  1362                 }

  1364                 case opc_wide:

  1365                     wide = true;

  1366                     break;

  1368                 default: {

  1369                     wide = false;

  1370                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1371                          Integer.toString(c));

  1372                 }

  1373             }

  1374             if (debug(" //")) {

  1375                 generateByteCodeComment(prev, i, byteCodes);

  1376             }

  1377             if (outChanged) {

  1378                 append("\n");

  1379             }

  1380         }

  1381         if (previousTrap != null) {

  1382             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1383         }

  1384         if (didBranches) {

  1385             append("\n    }\n");

  1386         }

  1387         while (openBraces-- > 0) {

  1388             append('}');

  1389         }

  1390         append("\n};");

  1391     }

  1393     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1394         int i, final CharSequence v2, final CharSequence v1,

  1395         final String test, int topMostLabel

  1396     ) throws IOException {

  1397         mapper.flush(this);

  1398         int indx = i + readShortArg(byteCodes, i);

  1399         append("if ((").append(v1)

  1400            .append(") ").append(test).append(" (")

  1401            .append(v2).append(")) ");

  1402         goTo(this, i, indx, topMostLabel);

  1403         return i + 2;

  1404     }

  1406     private int readInt4(byte[] byteCodes, int offset) {

  1407         final int d = byteCodes[offset + 0] << 24;

  1408         final int c = byteCodes[offset + 1] << 16;

  1409         final int b = byteCodes[offset + 2] << 8;

  1410         final int a = byteCodes[offset + 3];

  1411         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1412     }

  1413     private static int readUByte(byte[] byteCodes, int offset) {

  1414         return byteCodes[offset] & 0xff;

  1415     }

  1417     private static int readUShort(byte[] byteCodes, int offset) {

  1418         return ((byteCodes[offset] & 0xff) << 8)

  1419                     | (byteCodes[offset + 1] & 0xff);

  1420     }

  1421     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1422         return readUShort(byteCodes, offsetInstruction + 1);

  1423     }

  1425     private static int readShort(byte[] byteCodes, int offset) {

  1426         int signed = byteCodes[offset];

  1427         byte b0 = (byte)signed;

  1428         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1429     }

  1430     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1431         return readShort(byteCodes, offsetInstruction + 1);

  1432     }

  1434     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1435         int i = 0;

  1436         Boolean count = null;

  1437         boolean array = false;

  1438         sig.append("__");

  1439         int firstPos = sig.length();

  1440         while (i < descriptor.length()) {

  1441             char ch = descriptor.charAt(i++);

  1442             switch (ch) {

  1443                 case '(':

  1444                     count = true;

  1445                     continue;

  1446                 case ')':

  1447                     count = false;

  1448                     continue;

  1449                 case 'B':

  1450                 case 'C':

  1451                 case 'D':

  1452                 case 'F':

  1453                 case 'I':

  1454                 case 'J':

  1455                 case 'S':

  1456                 case 'Z':

  1457                     if (count) {

  1458                         if (array) {

  1459                             sig.append("_3");

  1460                         }

  1461                         sig.append(ch);

  1462                         if (ch == 'J' || ch == 'D') {

  1463                             cnt.append('1');

  1464                         } else {

  1465                             cnt.append('0');

  1466                         }

  1467                     } else {

  1468                         sig.insert(firstPos, ch);

  1469                         if (array) {

  1470                             returnType[0] = '[';

  1471                             sig.insert(firstPos, "_3");

  1472                         } else {

  1473                             returnType[0] = ch;

  1474                         }

  1475                     }

  1476                     array = false;

  1477                     continue;

  1478                 case 'V':

  1479                     assert !count;

  1480                     returnType[0] = 'V';

  1481                     sig.insert(firstPos, 'V');

  1482                     continue;

  1483                 case 'L':

  1484                     int next = descriptor.indexOf(';', i);

  1485                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1486                     if (count) {

  1487                         if (array) {

  1488                             sig.append("_3");

  1489                         }

  1490                         sig.append(realSig);

  1491                         cnt.append('0');

  1492                     } else {

  1493                         sig.insert(firstPos, realSig);

  1494                         if (array) {

  1495                             sig.insert(firstPos, "_3");

  1496                         }

  1497                         returnType[0] = 'L';

  1498                     }

  1499                     i = next + 1;

  1500                     array = false;

  1501                     continue;

  1502                 case '[':

  1503                     array = true;

  1504                     continue;

  1505                 default:

  1506                     throw new IllegalStateException("Invalid char: " + ch);

  1507             }

  1508         }

  1509     }

  1511     static String mangleSig(String sig) {

  1512         return mangleSig(sig, 0, sig.length());

  1513     }

  1515     private static String mangleMethodName(String name) {

  1516         StringBuilder sb = new StringBuilder(name.length() * 2);

  1517         int last = name.length();

  1518         for (int i = 0; i < last; i++) {

  1519             final char ch = name.charAt(i);

  1520             switch (ch) {

  1521                 case '_': sb.append("_1"); break;

  1522                 default: sb.append(ch); break;

  1523             }

  1524         }

  1525         return sb.toString();

  1526     }

  1527     private static String mangleSig(String txt, int first, int last) {

  1528         StringBuilder sb = new StringBuilder((last - first) * 2);

  1529         for (int i = first; i < last; i++) {

  1530             final char ch = txt.charAt(i);

  1531             switch (ch) {

  1532                 case '/': sb.append('_'); break;

  1533                 case '_': sb.append("_1"); break;

  1534                 case ';': sb.append("_2"); break;

  1535                 case '[': sb.append("_3"); break;

  1536                 default: sb.append(ch); break;

  1537             }

  1538         }

  1539         return sb.toString();

  1540     }

  1542     private static String mangleClassName(String name) {

  1543         return mangleSig(name);

  1544     }

  1546     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1547         StringBuilder name = new StringBuilder();

  1548         if ("<init>".equals(m.getName())) { // NOI18N

  1549             name.append("cons"); // NOI18N

  1550         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1551             name.append("class"); // NOI18N

  1552         } else {

  1553             name.append(mangleMethodName(m.getName()));

  1554         }

  1556         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1557         return name.toString();

  1558     }

  1560     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1561         StringBuilder name = new StringBuilder();

  1562         String descr = mi[2];//mi.getDescriptor();

  1563         String nm= mi[1];

  1564         if ("<init>".equals(nm)) { // NOI18N

  1565             name.append("cons"); // NOI18N

  1566         } else {

  1567             name.append(mangleMethodName(nm));

  1568         }

  1569         countArgs(descr, returnType, name, cnt);

  1570         return name.toString();

  1571     }

  1573     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1574     throws IOException {

  1575         int methodIndex = readUShortArg(byteCodes, i);

  1576         String[] mi = jc.getFieldInfoName(methodIndex);

  1577         char[] returnType = { 'V' };

  1578         StringBuilder cnt = new StringBuilder();

  1579         String mn = findMethodName(mi, cnt, returnType);

  1581         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1582         final CharSequence[] vars = new CharSequence[numArguments];

  1584         for (int j = numArguments - 1; j >= 0; --j) {

  1585             vars[j] = mapper.popValue();

  1586         }

  1588         if (returnType[0] != 'V') {

  1589             append("var ")

  1590                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1591                .append(" = ");

  1592         }

  1594         final String in = mi[0];

  1595         String mcn;

  1596         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1597             mcn = "java_lang_Class";

  1598         } else {

  1599             mcn = mangleClassName(in);

  1600         }

  1601         String object = accessClass(mcn) + "(false)";

  1602         if (mn.startsWith("cons_")) {

  1603             object += ".constructor";

  1604         }

  1605         append(accessStaticMethod(object, mn, mi));

  1606         if (isStatic) {

  1607             append('(');

  1608         } else {

  1609             append(".call(");

  1610         }

  1611         if (numArguments > 0) {

  1612             append(vars[0]);

  1613             for (int j = 1; j < numArguments; ++j) {

  1614                 append(", ");

  1615                 append(vars[j]);

  1616             }

  1617         }

  1618         append(");");

  1619         i += 2;

  1620         addReference(in);

  1621         return i;

  1622     }

  1623     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1624     throws IOException {

  1625         int methodIndex = readUShortArg(byteCodes, i);

  1626         String[] mi = jc.getFieldInfoName(methodIndex);

  1627         char[] returnType = { 'V' };

  1628         StringBuilder cnt = new StringBuilder();

  1629         String mn = findMethodName(mi, cnt, returnType);

  1631         final int numArguments = cnt.length() + 1;

  1632         final CharSequence[] vars = new CharSequence[numArguments];

  1634         for (int j = numArguments - 1; j >= 0; --j) {

  1635             vars[j] = mapper.popValue();

  1636         }

  1638         if (returnType[0] != 'V') {

  1639             append("var ")

  1640                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1641                .append(" = ");

  1642         }

  1644         append(accessVirtualMethod(vars[0].toString(), mn, mi));

  1645         append('(');

  1646         String sep = "";

  1647         for (int j = 1; j < numArguments; ++j) {

  1648             append(sep);

  1649             append(vars[j]);

  1650             sep = ", ";

  1651         }

  1652         append(");");

  1653         i += 2;

  1654         return i;

  1655     }

  1657     private void addReference(String cn) throws IOException {

  1658         if (requireReference(cn)) {

  1659             debug(" /* needs " + cn + " */");

  1660         }

  1661     }

  1663     private void outType(String d, StringBuilder out) {

  1664         int arr = 0;

  1665         while (d.charAt(0) == '[') {

  1666             out.append('A');

  1667             d = d.substring(1);

  1668         }

  1669         if (d.charAt(0) == 'L') {

  1670             assert d.charAt(d.length() - 1) == ';';

  1671             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1672         } else {

  1673             out.append(d);

  1674         }

  1675     }

  1677     private String encodeConstant(int entryIndex) throws IOException {

  1678         String[] classRef = { null };

  1679         String s = jc.stringValue(entryIndex, classRef);

  1680         if (classRef[0] != null) {

  1681             if (classRef[0].startsWith("[")) {

  1682                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1683             } else {

  1684                 addReference(classRef[0]);

  1685                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1686             }

  1687         }

  1688         return s;

  1689     }

  1691     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1692         byte[] arr = m.findAnnotationData(true);

  1693         if (arr == null) {

  1694             return null;

  1695         }

  1696         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1697         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1698         class P extends AnnotationParser {

  1699             public P() {

  1700                 super(false, true);

  1701             }

  1703             int cnt;

  1704             String[] args = new String[30];

  1705             String body;

  1706             boolean javacall;

  1707             boolean html4j;

  1709             @Override

  1710             protected void visitAttr(String type, String attr, String at, String value) {

  1711                 if (type.equals(jvmType)) {

  1712                     if ("body".equals(attr)) {

  1713                         body = value;

  1714                     } else if ("args".equals(attr)) {

  1715                         args[cnt++] = value;

  1716                     } else {

  1717                         throw new IllegalArgumentException(attr);

  1718                     }

  1719                 }

  1720                 if (type.equals(htmlType)) {

  1721                     html4j = true;

  1722                     if ("body".equals(attr)) {

  1723                         body = value;

  1724                     } else if ("args".equals(attr)) {

  1725                         args[cnt++] = value;

  1726                     } else if ("javacall".equals(attr)) {

  1727                         javacall = "1".equals(value);

  1728                     } else {

  1729                         throw new IllegalArgumentException(attr);

  1730                     }

  1731                 }

  1732             }

  1733         }

  1734         P p = new P();

  1735         p.parse(arr, jc);

  1736         if (p.body == null) {

  1737             return null;

  1738         }

  1739         StringBuilder cnt = new StringBuilder();

  1740         final String mn = findMethodName(m, cnt);

  1741         append(destObject).append(".").append(mn);

  1742         append(" = function(");

  1743         String space = "";

  1744         int index = 0;

  1745         StringBuilder toValue = new StringBuilder();

  1746         for (int i = 0; i < cnt.length(); i++) {

  1747             append(space);

  1748             space = outputArg(this, p.args, index);

  1749             if (p.html4j && space.length() > 0) {

  1750                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1751                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1752                     append(p.args[index]).append(");");

  1753             }

  1754             index++;

  1755         }

  1756         append(") {").append("\n");

  1757         append(toValue.toString());

  1758         if (p.javacall) {

  1759             int lastSlash = jc.getClassName().lastIndexOf('/');

  1760             final String pkg = jc.getClassName().substring(0, lastSlash);

  1761             append(mangleCallbacks(pkg, p.body));

  1762             requireReference(pkg + "/$JsCallbacks$");

  1763         } else {

  1764             append(p.body);

  1765         }

  1766         append("\n}\n");

  1767         return mn;

  1768     }

  1770     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1771         StringBuilder sb = new StringBuilder();

  1772         int pos = 0;

  1773         for (;;) {

  1774             int next = body.indexOf(".@", pos);

  1775             if (next == -1) {

  1776                 sb.append(body.substring(pos));

  1777                 body = sb.toString();

  1778                 break;

  1779             }

  1780             int ident = next;

  1781             while (ident > 0) {

  1782                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1783                     ident++;

  1784                     break;

  1785                 }

  1786             }

  1787             String refId = body.substring(ident, next);

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

  1791             int sigBeg = body.indexOf('(', next);

  1792             int sigEnd = body.indexOf(')', sigBeg);

  1793             int colon4 = body.indexOf("::", next);

  1794             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1795                 throw new IllegalStateException("Malformed body " + body);

  1796             }

  1797             String fqn = body.substring(next + 2, colon4);

  1798             String method = body.substring(colon4 + 2, sigBeg);

  1799             String params = body.substring(sigBeg, sigEnd + 1);

  1801             int paramBeg = body.indexOf('(', sigEnd + 1);

  1803             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1804             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1805             sb.append("(").append(refId);

  1806             if (body.charAt(paramBeg + 1) != ')') {

  1807                 sb.append(",");

  1808             }

  1809             pos = paramBeg + 1;

  1810         }

  1811         sb = null;

  1812         pos = 0;

  1813         for (;;) {

  1814             int next = body.indexOf("@", pos);

  1815             if (next == -1) {

  1816                 if (sb == null) {

  1817                     return body;

  1818                 }

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

  1820                 return sb;

  1821             }

  1822             if (sb == null) {

  1823                 sb = new StringBuilder();

  1824             }

  1826             sb.append(body.substring(pos, next));

  1828             int sigBeg = body.indexOf('(', next);

  1829             int sigEnd = body.indexOf(')', sigBeg);

  1830             int colon4 = body.indexOf("::", next);

  1831             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1832                 throw new IllegalStateException("Malformed body " + body);

  1833             }

  1834             String fqn = body.substring(next + 1, colon4);

  1835             String method = body.substring(colon4 + 2, sigBeg);

  1836             String params = body.substring(sigBeg, sigEnd + 1);

  1838             int paramBeg = body.indexOf('(', sigEnd + 1);

  1840             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1841             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1842             sb.append("(");

  1843             pos = paramBeg + 1;

  1844         }

  1845     }

  1847     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1848         if (params.startsWith("(")) {

  1849             params = params.substring(1);

  1850         }

  1851         if (params.endsWith(")")) {

  1852             params = params.substring(0, params.length() - 1);

  1853         }

  1854         StringBuilder sb = new StringBuilder();

  1855         final String fqnu = fqn.replace('.', '_');

  1856         final String rfqn = mangleClassName(fqnu);

  1857         final String rm = mangleMethodName(method);

  1858         final String srp;

  1859         {

  1860             StringBuilder pb = new StringBuilder();

  1861             int len = params.length();

  1862             int indx = 0;

  1863             while (indx < len) {

  1864                 char ch = params.charAt(indx);

  1865                 if (ch == '[' || ch == 'L') {

  1866                     pb.append("Ljava/lang/Object;");

  1867                     indx = params.indexOf(';', indx) + 1;

  1868                 } else {

  1869                     pb.append(ch);

  1870                     indx++;

  1871                 }

  1872             }

  1873             srp = mangleSig(pb.toString());

  1874         }

  1875         final String rp = mangleSig(params);

  1876         final String mrp = mangleMethodName(rp);

  1877         sb.append(rfqn).append("$").append(rm).

  1878             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1879         if (!isStatic) {

  1880             sb.append('L').append(fqnu).append("_2");

  1881         }

  1882         sb.append(srp);

  1883         return sb.toString();

  1884     }

  1886     private static String className(ClassData jc) {

  1887         //return jc.getName().getInternalName().replace('/', '_');

  1888         return mangleClassName(jc.getClassName());

  1889     }

  1891     private static String[] findAnnotation(

  1892         byte[] arr, ClassData cd, final String className,

  1893         final String... attrNames

  1894     ) throws IOException {

  1895         if (arr == null) {

  1896             return null;

  1897         }

  1898         final String[] values = new String[attrNames.length];

  1899         final boolean[] found = { false };

  1900         final String jvmType = "L" + className.replace('.', '/') + ";";

  1901         AnnotationParser ap = new AnnotationParser(false, true) {

  1902             @Override

  1903             protected void visitAttr(String type, String attr, String at, String value) {

  1904                 if (type.equals(jvmType)) {

  1905                     found[0] = true;

  1906                     for (int i = 0; i < attrNames.length; i++) {

  1907                         if (attrNames[i].equals(attr)) {

  1908                             values[i] = value;

  1909                         }

  1910                     }

  1911                 }

  1912             }

  1914         };

  1915         ap.parse(arr, cd);

  1916         return found[0] ? values : null;

  1917     }

  1919     private CharSequence initField(FieldData v) {

  1920         final String is = v.getInternalSig();

  1921         if (is.length() == 1) {

  1922             switch (is.charAt(0)) {

  1923                 case 'S':

  1924                 case 'J':

  1925                 case 'B':

  1926                 case 'Z':

  1927                 case 'C':

  1928                 case 'I': return " = 0;";

  1929                 case 'F':

  1930                 case 'D': return " = 0.0;";

  1931                 default:

  1932                     throw new IllegalStateException(is);

  1933             }

  1934         }

  1935         return " = null;";

  1936     }

  1938     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  1939         AnnotationParser ap = new AnnotationParser(true, false) {

  1940             int[] cnt = new int[32];

  1941             int depth;

  1943             @Override

  1944             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1945                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1946                 requireReference(slashType);

  1948                 if (cnt[depth]++ > 0) {

  1949                     append(",");

  1950                 }

  1951                 if (top) {

  1952                     append('"').append(attrType).append("\" : ");

  1953                 }

  1954                 append("{\n");

  1955                 cnt[++depth] = 0;

  1956             }

  1958             @Override

  1959             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1960                 append("\n}\n");

  1961                 depth--;

  1962             }

  1964             @Override

  1965             protected void visitValueStart(String attrName, char type) throws IOException {

  1966                 if (cnt[depth]++ > 0) {

  1967                     append(",\n");

  1968                 }

  1969                 cnt[++depth] = 0;

  1970                 if (attrName != null) {

  1971                     append(attrName).append(" : ");

  1972                 }

  1973                 if (type == '[') {

  1974                     append("[");

  1975                 }

  1976             }

  1978             @Override

  1979             protected void visitValueEnd(String attrName, char type) throws IOException {

  1980                 if (type == '[') {

  1981                     append("]");

  1982                 }

  1983                 depth--;

  1984             }

  1986             @Override

  1987             protected void visitAttr(String type, String attr, String attrType, String value)

  1988             throws IOException {

  1989                 if (attr == null && value == null) {

  1990                     return;

  1991                 }

  1992                 append(value);

  1993             }

  1995             @Override

  1996             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1997             throws IOException {

  1998                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1999                 requireReference(slashType);

  2001                 append(accessClass(mangleClassName(slashType)))

  2002                    .append("(false).constructor.fld_").append(value);

  2003             }

  2004         };

  2005         ap.parse(data, cd);

  2006     }

  2008     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2009         final String name = args[indx];

  2010         if (name == null) {

  2011             return "";

  2012         }

  2013         if (name.contains(",")) {

  2014             throw new IOException("Wrong parameter with ',': " + name);

  2015         }

  2016         out.append(name);

  2017         return ",";

  2018     }

  2020     final void emitNoFlush(

  2021         StackMapper sm,

  2022         final String format, final CharSequence... params

  2023     ) throws IOException {

  2024         emitImpl(this, format, params);

  2025     }

  2026     static final void emit(

  2027         StackMapper sm,

  2028         final Appendable out,

  2029         final String format, final CharSequence... params

  2030     ) throws IOException {

  2031         sm.flush(out);

  2032         emitImpl(out, format, params);

  2033     }

  2034     static void emitImpl(final Appendable out,

  2035                              final String format,

  2036                              final CharSequence... params) throws IOException {

  2037         final int length = format.length();

  2039         int processed = 0;

  2040         int paramOffset = format.indexOf('@');

  2041         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2042             final char paramChar = format.charAt(paramOffset + 1);

  2043             if ((paramChar >= '1') && (paramChar <= '9')) {

  2044                 final int paramIndex = paramChar - '0' - 1;

  2046                 out.append(format, processed, paramOffset);

  2047                 out.append(params[paramIndex]);

  2049                 ++paramOffset;

  2050                 processed = paramOffset + 1;

  2051             }

  2053             paramOffset = format.indexOf('@', paramOffset + 1);

  2054         }

  2056         out.append(format, processed, length);

  2057     }

  2059     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2060         append("} catch (e) {\n");

  2061         int finallyPC = -1;

  2062         for (TrapData e : traps) {

  2063             if (e == null) {

  2064                 break;

  2065             }

  2066             if (e.catch_cpx != 0) { //not finally

  2067                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2068                 addReference(classInternalName);

  2069                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2070                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2071                 append("var stA0 = e;");

  2072                 goTo(this, current, e.handler_pc, topMostLabel);

  2073                 append("}\n");

  2074             } else {

  2075                 finallyPC = e.handler_pc;

  2076             }

  2077         }

  2078         if (finallyPC == -1) {

  2079             append("throw e;");

  2080         } else {

  2081             append("var stA0 = e;");

  2082             goTo(this, current, finallyPC, topMostLabel);

  2083         }

  2084         append("\n}");

  2085     }

  2087     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2088         if (to < current) {

  2089             if (canBack < to) {

  2090                 out.append("{ gt = 0; continue X_" + to + "; }");

  2091             } else {

  2092                 out.append("{ gt = " + to + "; continue X_0; }");

  2093             }

  2094         } else {

  2095             out.append("{ gt = " + to + "; break IF; }");

  2096         }

  2097     }

  2099     private static void emitIf(

  2100         StackMapper sm,

  2101         Appendable out, String pattern,

  2102         CharSequence param,

  2103         int current, int to, int canBack

  2104     ) throws IOException {

  2105         sm.flush(out);

  2106         emitImpl(out, pattern, param);

  2107         goTo(out, current, to, canBack);

  2108     }

  2110     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2111         String jvmType;

  2112         switch (atype) {

  2113             case 4: jvmType = "[Z"; break;

  2114             case 5: jvmType = "[C"; break;

  2115             case 6: jvmType = "[F"; break;

  2116             case 7: jvmType = "[D"; break;

  2117             case 8: jvmType = "[B"; break;

  2118             case 9: jvmType = "[S"; break;

  2119             case 10: jvmType = "[I"; break;

  2120             case 11: jvmType = "[J"; break;

  2121             default: throw new IllegalStateException("Array type: " + atype);

  2122         }

  2123         emit(smapper, this,

  2124             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2125              smapper.popI(), smapper.pushA(), jvmType);

  2126     }

  2128     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2129         String typeName = jc.getClassName(type);

  2130         String ref = "null";

  2131         if (typeName.startsWith("[")) {

  2132             typeName = "'[" + typeName + "'";

  2133         } else {

  2134             ref = "vm." + mangleClassName(typeName);

  2135             typeName = "'[L" + typeName + ";'";

  2136         }

  2137         emit(smapper, this,

  2138             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2139              smapper.popI(), smapper.pushA(), typeName, ref);

  2140     }

  2142     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2143         String typeName = jc.getClassName(type);

  2144         int dim = readUByte(byteCodes, ++i);

  2145         StringBuilder dims = new StringBuilder();

  2146         dims.append('[');

  2147         for (int d = 0; d < dim; d++) {

  2148             if (d != 0) {

  2149                 dims.insert(1, ",");

  2150             }

  2151             dims.insert(1, smapper.popI());

  2152         }

  2153         dims.append(']');

  2154         String fn = "null";

  2155         if (typeName.charAt(dim) == 'L') {

  2156             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2157         }

  2158         emit(smapper, this,

  2159             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2160              dims.toString(), smapper.pushA(), typeName, fn

  2161         );

  2162         return i;

  2163     }

  2165     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2166         int table = i / 4 * 4 + 4;

  2167         int dflt = i + readInt4(byteCodes, table);

  2168         table += 4;

  2169         int low = readInt4(byteCodes, table);

  2170         table += 4;

  2171         int high = readInt4(byteCodes, table);

  2172         table += 4;

  2173         final CharSequence swVar = smapper.popValue();

  2174         smapper.flush(this);

  2175         append("switch (").append(swVar).append(") {\n");

  2176         while (low <= high) {

  2177             int offset = i + readInt4(byteCodes, table);

  2178             table += 4;

  2179             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2180             low++;

  2181         }

  2182         append("  default: ");

  2183         goTo(this, i, dflt, topMostLabel);

  2184         append("\n}");

  2185         i = table - 1;

  2186         return i;

  2187     }

  2189     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2190         int table = i / 4 * 4 + 4;

  2191         int dflt = i + readInt4(byteCodes, table);

  2192         table += 4;

  2193         int n = readInt4(byteCodes, table);

  2194         table += 4;

  2195         final CharSequence swVar = smapper.popValue();

  2196         smapper.flush(this);

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

  2198         while (n-- > 0) {

  2199             int cnstnt = readInt4(byteCodes, table);

  2200             table += 4;

  2201             int offset = i + readInt4(byteCodes, table);

  2202             table += 4;

  2203             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2204         }

  2205         append("  default: ");

  2206         goTo(this, i, dflt, topMostLabel);

  2207         append("\n}");

  2208         i = table - 1;

  2209         return i;

  2210     }

  2212     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2213         String type = jc.getClassName(indx);

  2214         if (!type.startsWith("[")) {

  2215             emit(smapper, this,

  2216                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2217                  smapper.popA(), smapper.pushI(),

  2218                  type.replace('/', '_'));

  2219         } else {

  2220             int cnt = 0;

  2221             while (type.charAt(cnt) == '[') {

  2222                 cnt++;

  2223             }

  2224             if (type.charAt(cnt) == 'L') {

  2225                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2226                 emit(smapper, this,

  2227                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2228                     smapper.popA(), smapper.pushI(),

  2229                     type, "" + cnt

  2230                 );

  2231             } else {

  2232                 emit(smapper, this,

  2233                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2234                     smapper.popA(), smapper.pushI(), type

  2235                 );

  2236             }

  2237         }

  2238     }

  2240     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2241         String type = jc.getClassName(indx);

  2242         if (!type.startsWith("[")) {

  2243             emitNoFlush(smapper,

  2244                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2245                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2246         } else {

  2247             int cnt = 0;

  2248             while (type.charAt(cnt) == '[') {

  2249                 cnt++;

  2250             }

  2251             if (type.charAt(cnt) == 'L') {

  2252                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2253                 emitNoFlush(smapper,

  2254                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2255                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2256                 );

  2257             } else {

  2258                 emitNoFlush(smapper,

  2259                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2260                      smapper.getT(0, VarType.REFERENCE, false), type

  2261                 );

  2262             }

  2263         }

  2264     }

  2266     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2267         for (int j = prev; j <= i; j++) {

  2268             append(" ");

  2269             final int cc = readUByte(byteCodes, j);

  2270             append(Integer.toString(cc));

  2271         }

  2272     }

  2273 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Wed, 07 May 2014 10:01:54 +0200
branch	closure
changeset 1543	bafa63ac44a2
parent 1535	c02c6d409461
child 1547	7c10f6d5635c
permissions	-rw-r--r--