hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@d6d1fc565854

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

  1122                     break;

  1123                 }

  1124                 case opc_dup2: {

  1125                     final Variable vi1 = smapper.get(0);

  1127                     if (vi1.isCategory2()) {

  1128                         emit(smapper, this, "var @1 = @2;",

  1129                              smapper.pushT(vi1.getType()), vi1);

  1130                     } else {

  1131                         final Variable vi2 = smapper.get(1);

  1132                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1133                              smapper.pushT(vi2.getType()), vi2,

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

  1135                     }

  1136                     break;

  1137                 }

  1138                 case opc_dup_x1: {

  1139                     final Variable vi1 = smapper.pop(this);

  1140                     final Variable vi2 = smapper.pop(this);

  1141                     final Variable vo3 = smapper.pushT(vi1.getType());

  1142                     final Variable vo2 = smapper.pushT(vi2.getType());

  1143                     final Variable vo1 = smapper.pushT(vi1.getType());

  1145                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1146                          vo1, vi1, vo2, vi2, vo3, vo1);

  1147                     break;

  1148                 }

  1149                 case opc_dup2_x1: {

  1150                     final Variable vi1 = smapper.pop(this);

  1151                     final Variable vi2 = smapper.pop(this);

  1153                     if (vi1.isCategory2()) {

  1154                         final Variable vo3 = smapper.pushT(vi1.getType());

  1155                         final Variable vo2 = smapper.pushT(vi2.getType());

  1156                         final Variable vo1 = smapper.pushT(vi1.getType());

  1158                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1159                              vo1, vi1, vo2, vi2, vo3, vo1);

  1160                     } else {

  1161                         final Variable vi3 = smapper.pop(this);

  1162                         final Variable vo5 = smapper.pushT(vi2.getType());

  1163                         final Variable vo4 = smapper.pushT(vi1.getType());

  1164                         final Variable vo3 = smapper.pushT(vi3.getType());

  1165                         final Variable vo2 = smapper.pushT(vi2.getType());

  1166                         final Variable vo1 = smapper.pushT(vi1.getType());

  1168                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1169                              vo1, vi1, vo2, vi2, vo3, vi3);

  1170                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1171                              vo4, vo1, vo5, vo2);

  1172                     }

  1173                     break;

  1174                 }

  1175                 case opc_dup_x2: {

  1176                     final Variable vi1 = smapper.pop(this);

  1177                     final Variable vi2 = smapper.pop(this);

  1179                     if (vi2.isCategory2()) {

  1180                         final Variable vo3 = smapper.pushT(vi1.getType());

  1181                         final Variable vo2 = smapper.pushT(vi2.getType());

  1182                         final Variable vo1 = smapper.pushT(vi1.getType());

  1184                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1185                              vo1, vi1, vo2, vi2, vo3, vo1);

  1186                     } else {

  1187                         final Variable vi3 = smapper.pop(this);

  1188                         final Variable vo4 = smapper.pushT(vi1.getType());

  1189                         final Variable vo3 = smapper.pushT(vi3.getType());

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

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

  1193                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1194                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1195                     }

  1196                     break;

  1197                 }

  1198                 case opc_dup2_x2: {

  1199                     final Variable vi1 = smapper.pop(this);

  1200                     final Variable vi2 = smapper.pop(this);

  1202                     if (vi1.isCategory2()) {

  1203                         if (vi2.isCategory2()) {

  1204                             final Variable vo3 = smapper.pushT(vi1.getType());

  1205                             final Variable vo2 = smapper.pushT(vi2.getType());

  1206                             final Variable vo1 = smapper.pushT(vi1.getType());

  1208                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1209                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1210                         } else {

  1211                             final Variable vi3 = smapper.pop(this);

  1212                             final Variable vo4 = smapper.pushT(vi1.getType());

  1213                             final Variable vo3 = smapper.pushT(vi3.getType());

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

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

  1217                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1218                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1219                         }

  1220                     } else {

  1221                         final Variable vi3 = smapper.pop(this);

  1223                         if (vi3.isCategory2()) {

  1224                             final Variable vo5 = smapper.pushT(vi2.getType());

  1225                             final Variable vo4 = smapper.pushT(vi1.getType());

  1226                             final Variable vo3 = smapper.pushT(vi3.getType());

  1227                             final Variable vo2 = smapper.pushT(vi2.getType());

  1228                             final Variable vo1 = smapper.pushT(vi1.getType());

  1230                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1231                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1232                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1233                                  vo4, vo1, vo5, vo2);

  1234                         } else {

  1235                             final Variable vi4 = smapper.pop(this);

  1236                             final Variable vo6 = smapper.pushT(vi2.getType());

  1237                             final Variable vo5 = smapper.pushT(vi1.getType());

  1238                             final Variable vo4 = smapper.pushT(vi4.getType());

  1239                             final Variable vo3 = smapper.pushT(vi3.getType());

  1240                             final Variable vo2 = smapper.pushT(vi2.getType());

  1241                             final Variable vo1 = smapper.pushT(vi1.getType());

  1243                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1244                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1245                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1246                                  vo5, vo1, vo6, vo2);

  1247                         }

  1248                     }

  1249                     break;

  1250                 }

  1251                 case opc_swap: {

  1252                     final Variable vi1 = smapper.get(0);

  1253                     final Variable vi2 = smapper.get(1);

  1255                     if (vi1.getType() == vi2.getType()) {

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

  1258                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1259                              tmp, vi1, vi2);

  1260                         smapper.pop(1);

  1261                     } else {

  1262                         smapper.pop(2);

  1263                         smapper.pushT(vi1.getType());

  1264                         smapper.pushT(vi2.getType());

  1265                     }

  1266                     break;

  1267                 }

  1268                 case opc_bipush:

  1269                     smapper.assign(this, VarType.INTEGER,

  1270                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1271                     break;

  1272                 case opc_sipush:

  1273                     smapper.assign(this, VarType.INTEGER,

  1274                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1275                     );

  1276                     i += 2;

  1277                     break;

  1278                 case opc_getfield: {

  1279                     int indx = readUShortArg(byteCodes, i);

  1280                     String[] fi = jc.getFieldInfoName(indx);

  1281                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1282                     final String mangleClass = mangleClassName(fi[0]);

  1283                     final String mangleClassAccess = accessClass(mangleClass);

  1284                     smapper.replace(this, type, "@2.call(@1)",

  1285                          smapper.getA(0),

  1286                          accessField(mangleClassAccess + "(false)",

  1287                                      "_" + fi[1], fi)

  1288                     );

  1289                     i += 2;

  1290                     break;

  1291                 }

  1292                 case opc_putfield: {

  1293                     int indx = readUShortArg(byteCodes, i);

  1294                     String[] fi = jc.getFieldInfoName(indx);

  1295                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1296                     final String mangleClass = mangleClassName(fi[0]);

  1297                     final String mangleClassAccess = accessClass(mangleClass);

  1298                     emit(smapper, this, "@3.call(@2, @1);",

  1299                          smapper.popT(type),

  1300                          smapper.popA(),

  1301                          accessField(mangleClassAccess + "(false)",

  1302                                      "_" + fi[1], fi));

  1303                     i += 2;

  1304                     break;

  1305                 }

  1306                 case opc_getstatic: {

  1307                     int indx = readUShortArg(byteCodes, i);

  1308                     String[] fi = jc.getFieldInfoName(indx);

  1309                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1310                     String ac = accessClass(mangleClassName(fi[0]));

  1311                     smapper.assign(this, type, ac + "(false)._" + fi[1] + "()");

  1312                     i += 2;

  1313                     addReference(fi[0]);

  1314                     break;

  1315                 }

  1316                 case opc_putstatic: {

  1317                     int indx = readUShortArg(byteCodes, i);

  1318                     String[] fi = jc.getFieldInfoName(indx);

  1319                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1320                     emit(smapper, this, "@1(false)._@2(@3);",

  1321                          accessClass(mangleClassName(fi[0])), fi[1],

  1322                          smapper.popT(type));

  1323                     i += 2;

  1324                     addReference(fi[0]);

  1325                     break;

  1326                 }

  1327                 case opc_checkcast: {

  1328                     int indx = readUShortArg(byteCodes, i);

  1329                     generateCheckcast(indx, smapper);

  1330                     i += 2;

  1331                     break;

  1332                 }

  1333                 case opc_instanceof: {

  1334                     int indx = readUShortArg(byteCodes, i);

  1335                     generateInstanceOf(indx, smapper);

  1336                     i += 2;

  1337                     break;

  1338                 }

  1339                 case opc_athrow: {

  1340                     final CharSequence v = smapper.popA();

  1341                     smapper.clear();

  1343                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1344                          smapper.pushA(), v);

  1345                     break;

  1346                 }

  1348                 case opc_monitorenter: {

  1349                     debug("/* monitor enter */");

  1350                     smapper.popA();

  1351                     break;

  1352                 }

  1354                 case opc_monitorexit: {

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

  1356                     smapper.popA();

  1357                     break;

  1358                 }

  1360                 case opc_wide:

  1361                     wide = true;

  1362                     break;

  1364                 default: {

  1365                     wide = false;

  1366                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1367                          Integer.toString(c));

  1368                 }

  1369             }

  1370             if (debug(" //")) {

  1371                 generateByteCodeComment(prev, i, byteCodes);

  1372             }

  1373             if (outChanged) {

  1374                 append("\n");

  1375             }

  1376         }

  1377         if (previousTrap != null) {

  1378             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1379         }

  1380         if (didBranches) {

  1381             append("\n    }\n");

  1382         }

  1383         while (openBraces-- > 0) {

  1384             append('}');

  1385         }

  1386         append("\n};");

  1387     }

  1389     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1390         int i, final CharSequence v2, final CharSequence v1,

  1391         final String test, int topMostLabel

  1392     ) throws IOException {

  1393         mapper.flush(this);

  1394         int indx = i + readShortArg(byteCodes, i);

  1395         append("if ((").append(v1)

  1396            .append(") ").append(test).append(" (")

  1397            .append(v2).append(")) ");

  1398         goTo(this, i, indx, topMostLabel);

  1399         return i + 2;

  1400     }

  1402     private int readInt4(byte[] byteCodes, int offset) {

  1403         final int d = byteCodes[offset + 0] << 24;

  1404         final int c = byteCodes[offset + 1] << 16;

  1405         final int b = byteCodes[offset + 2] << 8;

  1406         final int a = byteCodes[offset + 3];

  1407         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1408     }

  1409     private static int readUByte(byte[] byteCodes, int offset) {

  1410         return byteCodes[offset] & 0xff;

  1411     }

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

  1414         return ((byteCodes[offset] & 0xff) << 8)

  1415                     | (byteCodes[offset + 1] & 0xff);

  1416     }

  1417     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1418         return readUShort(byteCodes, offsetInstruction + 1);

  1419     }

  1421     private static int readShort(byte[] byteCodes, int offset) {

  1422         int signed = byteCodes[offset];

  1423         byte b0 = (byte)signed;

  1424         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1425     }

  1426     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1427         return readShort(byteCodes, offsetInstruction + 1);

  1428     }

  1430     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1431         int i = 0;

  1432         Boolean count = null;

  1433         boolean array = false;

  1434         sig.append("__");

  1435         int firstPos = sig.length();

  1436         while (i < descriptor.length()) {

  1437             char ch = descriptor.charAt(i++);

  1438             switch (ch) {

  1439                 case '(':

  1440                     count = true;

  1441                     continue;

  1442                 case ')':

  1443                     count = false;

  1444                     continue;

  1445                 case 'B':

  1446                 case 'C':

  1447                 case 'D':

  1448                 case 'F':

  1449                 case 'I':

  1450                 case 'J':

  1451                 case 'S':

  1452                 case 'Z':

  1453                     if (count) {

  1454                         if (array) {

  1455                             sig.append("_3");

  1456                         }

  1457                         sig.append(ch);

  1458                         if (ch == 'J' || ch == 'D') {

  1459                             cnt.append('1');

  1460                         } else {

  1461                             cnt.append('0');

  1462                         }

  1463                     } else {

  1464                         sig.insert(firstPos, ch);

  1465                         if (array) {

  1466                             returnType[0] = '[';

  1467                             sig.insert(firstPos, "_3");

  1468                         } else {

  1469                             returnType[0] = ch;

  1470                         }

  1471                     }

  1472                     array = false;

  1473                     continue;

  1474                 case 'V':

  1475                     assert !count;

  1476                     returnType[0] = 'V';

  1477                     sig.insert(firstPos, 'V');

  1478                     continue;

  1479                 case 'L':

  1480                     int next = descriptor.indexOf(';', i);

  1481                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1482                     if (count) {

  1483                         if (array) {

  1484                             sig.append("_3");

  1485                         }

  1486                         sig.append(realSig);

  1487                         cnt.append('0');

  1488                     } else {

  1489                         sig.insert(firstPos, realSig);

  1490                         if (array) {

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

  1492                         }

  1493                         returnType[0] = 'L';

  1494                     }

  1495                     i = next + 1;

  1496                     array = false;

  1497                     continue;

  1498                 case '[':

  1499                     array = true;

  1500                     continue;

  1501                 default:

  1502                     throw new IllegalStateException("Invalid char: " + ch);

  1503             }

  1504         }

  1505     }

  1507     static String mangleSig(String sig) {

  1508         return mangleSig(sig, 0, sig.length());

  1509     }

  1511     private static String mangleMethodName(String name) {

  1512         StringBuilder sb = new StringBuilder(name.length() * 2);

  1513         int last = name.length();

  1514         for (int i = 0; i < last; i++) {

  1515             final char ch = name.charAt(i);

  1516             switch (ch) {

  1517                 case '_': sb.append("_1"); break;

  1518                 default: sb.append(ch); break;

  1519             }

  1520         }

  1521         return sb.toString();

  1522     }

  1523     private static String mangleSig(String txt, int first, int last) {

  1524         StringBuilder sb = new StringBuilder((last - first) * 2);

  1525         for (int i = first; i < last; i++) {

  1526             final char ch = txt.charAt(i);

  1527             switch (ch) {

  1528                 case '/': sb.append('_'); break;

  1529                 case '_': sb.append("_1"); break;

  1530                 case ';': sb.append("_2"); break;

  1531                 case '[': sb.append("_3"); break;

  1532                 default: sb.append(ch); break;

  1533             }

  1534         }

  1535         return sb.toString();

  1536     }

  1538     private static String mangleClassName(String name) {

  1539         return mangleSig(name);

  1540     }

  1542     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1543         StringBuilder name = new StringBuilder();

  1544         if ("<init>".equals(m.getName())) { // NOI18N

  1545             name.append("cons"); // NOI18N

  1546         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1547             name.append("class"); // NOI18N

  1548         } else {

  1549             name.append(mangleMethodName(m.getName()));

  1550         }

  1552         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1553         return name.toString();

  1554     }

  1556     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1557         StringBuilder name = new StringBuilder();

  1558         String descr = mi[2];//mi.getDescriptor();

  1559         String nm= mi[1];

  1560         if ("<init>".equals(nm)) { // NOI18N

  1561             name.append("cons"); // NOI18N

  1562         } else {

  1563             name.append(mangleMethodName(nm));

  1564         }

  1565         countArgs(descr, returnType, name, cnt);

  1566         return name.toString();

  1567     }

  1569     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1570     throws IOException {

  1571         int methodIndex = readUShortArg(byteCodes, i);

  1572         String[] mi = jc.getFieldInfoName(methodIndex);

  1573         char[] returnType = { 'V' };

  1574         StringBuilder cnt = new StringBuilder();

  1575         String mn = findMethodName(mi, cnt, returnType);

  1577         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1578         final CharSequence[] vars = new CharSequence[numArguments];

  1580         for (int j = numArguments - 1; j >= 0; --j) {

  1581             vars[j] = mapper.popValue();

  1582         }

  1584         if (returnType[0] != 'V') {

  1585             append("var ")

  1586                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1587                .append(" = ");

  1588         }

  1590         final String in = mi[0];

  1591         String mcn;

  1592         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1593             mcn = "java_lang_Class";

  1594         } else {

  1595             mcn = mangleClassName(in);

  1596         }

  1597         String object = accessClass(mcn) + "(false)";

  1598         if (mn.startsWith("cons_")) {

  1599             object += ".constructor";

  1600         }

  1601         append(accessStaticMethod(object, mn, mi));

  1602         if (isStatic) {

  1603             append('(');

  1604         } else {

  1605             append(".call(");

  1606         }

  1607         if (numArguments > 0) {

  1608             append(vars[0]);

  1609             for (int j = 1; j < numArguments; ++j) {

  1610                 append(", ");

  1611                 append(vars[j]);

  1612             }

  1613         }

  1614         append(");");

  1615         i += 2;

  1616         addReference(in);

  1617         return i;

  1618     }

  1619     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1620     throws IOException {

  1621         int methodIndex = readUShortArg(byteCodes, i);

  1622         String[] mi = jc.getFieldInfoName(methodIndex);

  1623         char[] returnType = { 'V' };

  1624         StringBuilder cnt = new StringBuilder();

  1625         String mn = findMethodName(mi, cnt, returnType);

  1627         final int numArguments = cnt.length() + 1;

  1628         final CharSequence[] vars = new CharSequence[numArguments];

  1630         for (int j = numArguments - 1; j >= 0; --j) {

  1631             vars[j] = mapper.popValue();

  1632         }

  1634         if (returnType[0] != 'V') {

  1635             append("var ")

  1636                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1637                .append(" = ");

  1638         }

  1640         append(accessVirtualMethod(vars[0].toString(), mn, mi));

  1641         append('(');

  1642         String sep = "";

  1643         for (int j = 1; j < numArguments; ++j) {

  1644             append(sep);

  1645             append(vars[j]);

  1646             sep = ", ";

  1647         }

  1648         append(");");

  1649         i += 2;

  1650         return i;

  1651     }

  1653     private void addReference(String cn) throws IOException {

  1654         if (requireReference(cn)) {

  1655             debug(" /* needs " + cn + " */");

  1656         }

  1657     }

  1659     private void outType(String d, StringBuilder out) {

  1660         int arr = 0;

  1661         while (d.charAt(0) == '[') {

  1662             out.append('A');

  1663             d = d.substring(1);

  1664         }

  1665         if (d.charAt(0) == 'L') {

  1666             assert d.charAt(d.length() - 1) == ';';

  1667             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1668         } else {

  1669             out.append(d);

  1670         }

  1671     }

  1673     private String encodeConstant(int entryIndex) throws IOException {

  1674         String[] classRef = { null };

  1675         String s = jc.stringValue(entryIndex, classRef);

  1676         if (classRef[0] != null) {

  1677             if (classRef[0].startsWith("[")) {

  1678                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1679             } else {

  1680                 addReference(classRef[0]);

  1681                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1682             }

  1683         }

  1684         return s;

  1685     }

  1687     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1688         byte[] arr = m.findAnnotationData(true);

  1689         if (arr == null) {

  1690             return null;

  1691         }

  1692         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1693         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1694         class P extends AnnotationParser {

  1695             public P() {

  1696                 super(false, true);

  1697             }

  1699             int cnt;

  1700             String[] args = new String[30];

  1701             String body;

  1702             boolean javacall;

  1703             boolean html4j;

  1705             @Override

  1706             protected void visitAttr(String type, String attr, String at, String value) {

  1707                 if (type.equals(jvmType)) {

  1708                     if ("body".equals(attr)) {

  1709                         body = value;

  1710                     } else if ("args".equals(attr)) {

  1711                         args[cnt++] = value;

  1712                     } else {

  1713                         throw new IllegalArgumentException(attr);

  1714                     }

  1715                 }

  1716                 if (type.equals(htmlType)) {

  1717                     html4j = true;

  1718                     if ("body".equals(attr)) {

  1719                         body = value;

  1720                     } else if ("args".equals(attr)) {

  1721                         args[cnt++] = value;

  1722                     } else if ("javacall".equals(attr)) {

  1723                         javacall = "1".equals(value);

  1724                     } else {

  1725                         throw new IllegalArgumentException(attr);

  1726                     }

  1727                 }

  1728             }

  1729         }

  1730         P p = new P();

  1731         p.parse(arr, jc);

  1732         if (p.body == null) {

  1733             return null;

  1734         }

  1735         StringBuilder cnt = new StringBuilder();

  1736         final String mn = findMethodName(m, cnt);

  1737         append(destObject).append(".").append(mn);

  1738         append(" = function(");

  1739         String space = "";

  1740         int index = 0;

  1741         StringBuilder toValue = new StringBuilder();

  1742         for (int i = 0; i < cnt.length(); i++) {

  1743             append(space);

  1744             space = outputArg(this, p.args, index);

  1745             if (p.html4j && space.length() > 0) {

  1746                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1747                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1748                     append(p.args[index]).append(");");

  1749             }

  1750             index++;

  1751         }

  1752         append(") {").append("\n");

  1753         append(toValue.toString());

  1754         if (p.javacall) {

  1755             int lastSlash = jc.getClassName().lastIndexOf('/');

  1756             final String pkg = jc.getClassName().substring(0, lastSlash);

  1757             append(mangleCallbacks(pkg, p.body));

  1758             requireReference(pkg + "/$JsCallbacks$");

  1759         } else {

  1760             append(p.body);

  1761         }

  1762         append("\n}\n");

  1763         return mn;

  1764     }

  1766     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1767         StringBuilder sb = new StringBuilder();

  1768         int pos = 0;

  1769         for (;;) {

  1770             int next = body.indexOf(".@", pos);

  1771             if (next == -1) {

  1772                 sb.append(body.substring(pos));

  1773                 body = sb.toString();

  1774                 break;

  1775             }

  1776             int ident = next;

  1777             while (ident > 0) {

  1778                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1779                     ident++;

  1780                     break;

  1781                 }

  1782             }

  1783             String refId = body.substring(ident, next);

  1785             sb.append(body.substring(pos, ident));

  1787             int sigBeg = body.indexOf('(', next);

  1788             int sigEnd = body.indexOf(')', sigBeg);

  1789             int colon4 = body.indexOf("::", next);

  1790             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1791                 throw new IllegalStateException("Malformed body " + body);

  1792             }

  1793             String fqn = body.substring(next + 2, colon4);

  1794             String method = body.substring(colon4 + 2, sigBeg);

  1795             String params = body.substring(sigBeg, sigEnd + 1);

  1797             int paramBeg = body.indexOf('(', sigEnd + 1);

  1799             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1800             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1801             sb.append("(").append(refId);

  1802             if (body.charAt(paramBeg + 1) != ')') {

  1803                 sb.append(",");

  1804             }

  1805             pos = paramBeg + 1;

  1806         }

  1807         sb = null;

  1808         pos = 0;

  1809         for (;;) {

  1810             int next = body.indexOf("@", pos);

  1811             if (next == -1) {

  1812                 if (sb == null) {

  1813                     return body;

  1814                 }

  1815                 sb.append(body.substring(pos));

  1816                 return sb;

  1817             }

  1818             if (sb == null) {

  1819                 sb = new StringBuilder();

  1820             }

  1822             sb.append(body.substring(pos, next));

  1824             int sigBeg = body.indexOf('(', next);

  1825             int sigEnd = body.indexOf(')', sigBeg);

  1826             int colon4 = body.indexOf("::", next);

  1827             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1828                 throw new IllegalStateException("Malformed body " + body);

  1829             }

  1830             String fqn = body.substring(next + 1, colon4);

  1831             String method = body.substring(colon4 + 2, sigBeg);

  1832             String params = body.substring(sigBeg, sigEnd + 1);

  1834             int paramBeg = body.indexOf('(', sigEnd + 1);

  1836             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1837             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1838             sb.append("(");

  1839             pos = paramBeg + 1;

  1840         }

  1841     }

  1843     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1844         if (params.startsWith("(")) {

  1845             params = params.substring(1);

  1846         }

  1847         if (params.endsWith(")")) {

  1848             params = params.substring(0, params.length() - 1);

  1849         }

  1850         StringBuilder sb = new StringBuilder();

  1851         final String fqnu = fqn.replace('.', '_');

  1852         final String rfqn = mangleClassName(fqnu);

  1853         final String rm = mangleMethodName(method);

  1854         final String srp;

  1855         {

  1856             StringBuilder pb = new StringBuilder();

  1857             int len = params.length();

  1858             int indx = 0;

  1859             while (indx < len) {

  1860                 char ch = params.charAt(indx);

  1861                 if (ch == '[' || ch == 'L') {

  1862                     pb.append("Ljava/lang/Object;");

  1863                     indx = params.indexOf(';', indx) + 1;

  1864                 } else {

  1865                     pb.append(ch);

  1866                     indx++;

  1867                 }

  1868             }

  1869             srp = mangleSig(pb.toString());

  1870         }

  1871         final String rp = mangleSig(params);

  1872         final String mrp = mangleMethodName(rp);

  1873         sb.append(rfqn).append("$").append(rm).

  1874             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1875         if (!isStatic) {

  1876             sb.append('L').append(fqnu).append("_2");

  1877         }

  1878         sb.append(srp);

  1879         return sb.toString();

  1880     }

  1882     private static String className(ClassData jc) {

  1883         //return jc.getName().getInternalName().replace('/', '_');

  1884         return mangleClassName(jc.getClassName());

  1885     }

  1887     private static String[] findAnnotation(

  1888         byte[] arr, ClassData cd, final String className,

  1889         final String... attrNames

  1890     ) throws IOException {

  1891         if (arr == null) {

  1892             return null;

  1893         }

  1894         final String[] values = new String[attrNames.length];

  1895         final boolean[] found = { false };

  1896         final String jvmType = "L" + className.replace('.', '/') + ";";

  1897         AnnotationParser ap = new AnnotationParser(false, true) {

  1898             @Override

  1899             protected void visitAttr(String type, String attr, String at, String value) {

  1900                 if (type.equals(jvmType)) {

  1901                     found[0] = true;

  1902                     for (int i = 0; i < attrNames.length; i++) {

  1903                         if (attrNames[i].equals(attr)) {

  1904                             values[i] = value;

  1905                         }

  1906                     }

  1907                 }

  1908             }

  1910         };

  1911         ap.parse(arr, cd);

  1912         return found[0] ? values : null;

  1913     }

  1915     private CharSequence initField(FieldData v) {

  1916         final String is = v.getInternalSig();

  1917         if (is.length() == 1) {

  1918             switch (is.charAt(0)) {

  1919                 case 'S':

  1920                 case 'J':

  1921                 case 'B':

  1922                 case 'Z':

  1923                 case 'C':

  1924                 case 'I': return " = 0;";

  1925                 case 'F':

  1926                 case 'D': return " = 0.0;";

  1927                 default:

  1928                     throw new IllegalStateException(is);

  1929             }

  1930         }

  1931         return " = null;";

  1932     }

  1934     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  1935         AnnotationParser ap = new AnnotationParser(true, false) {

  1936             int[] cnt = new int[32];

  1937             int depth;

  1939             @Override

  1940             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1941                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1942                 requireReference(slashType);

  1944                 if (cnt[depth]++ > 0) {

  1945                     append(",");

  1946                 }

  1947                 if (top) {

  1948                     append('"').append(attrType).append("\" : ");

  1949                 }

  1950                 append("{\n");

  1951                 cnt[++depth] = 0;

  1952             }

  1954             @Override

  1955             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1956                 append("\n}\n");

  1957                 depth--;

  1958             }

  1960             @Override

  1961             protected void visitValueStart(String attrName, char type) throws IOException {

  1962                 if (cnt[depth]++ > 0) {

  1963                     append(",\n");

  1964                 }

  1965                 cnt[++depth] = 0;

  1966                 if (attrName != null) {

  1967                     append(attrName).append(" : ");

  1968                 }

  1969                 if (type == '[') {

  1970                     append("[");

  1971                 }

  1972             }

  1974             @Override

  1975             protected void visitValueEnd(String attrName, char type) throws IOException {

  1976                 if (type == '[') {

  1977                     append("]");

  1978                 }

  1979                 depth--;

  1980             }

  1982             @Override

  1983             protected void visitAttr(String type, String attr, String attrType, String value)

  1984             throws IOException {

  1985                 if (attr == null && value == null) {

  1986                     return;

  1987                 }

  1988                 append(value);

  1989             }

  1991             @Override

  1992             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1993             throws IOException {

  1994                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1995                 requireReference(slashType);

  1997                 append(accessClass(mangleClassName(slashType)))

  1998                    .append("(false).constructor.fld_").append(value);

  1999             }

  2000         };

  2001         ap.parse(data, cd);

  2002     }

  2004     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2005         final String name = args[indx];

  2006         if (name == null) {

  2007             return "";

  2008         }

  2009         if (name.contains(",")) {

  2010             throw new IOException("Wrong parameter with ',': " + name);

  2011         }

  2012         out.append(name);

  2013         return ",";

  2014     }

  2016     final void emitNoFlush(

  2017         StackMapper sm,

  2018         final String format, final CharSequence... params

  2019     ) throws IOException {

  2020         emitImpl(this, format, params);

  2021     }

  2022     static final void emit(

  2023         StackMapper sm,

  2024         final Appendable out,

  2025         final String format, final CharSequence... params

  2026     ) throws IOException {

  2027         sm.flush(out);

  2028         emitImpl(out, format, params);

  2029     }

  2030     static void emitImpl(final Appendable out,

  2031                              final String format,

  2032                              final CharSequence... params) throws IOException {

  2033         final int length = format.length();

  2035         int processed = 0;

  2036         int paramOffset = format.indexOf('@');

  2037         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2038             final char paramChar = format.charAt(paramOffset + 1);

  2039             if ((paramChar >= '1') && (paramChar <= '9')) {

  2040                 final int paramIndex = paramChar - '0' - 1;

  2042                 out.append(format, processed, paramOffset);

  2043                 out.append(params[paramIndex]);

  2045                 ++paramOffset;

  2046                 processed = paramOffset + 1;

  2047             }

  2049             paramOffset = format.indexOf('@', paramOffset + 1);

  2050         }

  2052         out.append(format, processed, length);

  2053     }

  2055     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2056         append("} catch (e) {\n");

  2057         int finallyPC = -1;

  2058         for (TrapData e : traps) {

  2059             if (e == null) {

  2060                 break;

  2061             }

  2062             if (e.catch_cpx != 0) { //not finally

  2063                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2064                 addReference(classInternalName);

  2065                 append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  2066                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2067                 append("var stA0 = e;");

  2068                 goTo(this, current, e.handler_pc, topMostLabel);

  2069                 append("}\n");

  2070             } else {

  2071                 finallyPC = e.handler_pc;

  2072             }

  2073         }

  2074         if (finallyPC == -1) {

  2075             append("throw e;");

  2076         } else {

  2077             append("var stA0 = e;");

  2078             goTo(this, current, finallyPC, topMostLabel);

  2079         }

  2080         append("\n}");

  2081     }

  2083     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2084         if (to < current) {

  2085             if (canBack < to) {

  2086                 out.append("{ gt = 0; continue X_" + to + "; }");

  2087             } else {

  2088                 out.append("{ gt = " + to + "; continue X_0; }");

  2089             }

  2090         } else {

  2091             out.append("{ gt = " + to + "; break IF; }");

  2092         }

  2093     }

  2095     private static void emitIf(

  2096         StackMapper sm,

  2097         Appendable out, String pattern,

  2098         CharSequence param,

  2099         int current, int to, int canBack

  2100     ) throws IOException {

  2101         sm.flush(out);

  2102         emitImpl(out, pattern, param);

  2103         goTo(out, current, to, canBack);

  2104     }

  2106     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2107         String jvmType;

  2108         switch (atype) {

  2109             case 4: jvmType = "[Z"; break;

  2110             case 5: jvmType = "[C"; break;

  2111             case 6: jvmType = "[F"; break;

  2112             case 7: jvmType = "[D"; break;

  2113             case 8: jvmType = "[B"; break;

  2114             case 9: jvmType = "[S"; break;

  2115             case 10: jvmType = "[I"; break;

  2116             case 11: jvmType = "[J"; break;

  2117             default: throw new IllegalStateException("Array type: " + atype);

  2118         }

  2119         emit(smapper, this,

  2120             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2I'](true, '@3', @1);",

  2121              smapper.popI(), smapper.pushA(), jvmType);

  2122     }

  2124     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2125         String typeName = jc.getClassName(type);

  2126         if (typeName.startsWith("[")) {

  2127             typeName = "[" + typeName;

  2128         } else {

  2129             typeName = "[L" + typeName + ";";

  2130         }

  2131         emit(smapper, this,

  2132             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2I'](false, '@3', @1);",

  2133              smapper.popI(), smapper.pushA(), typeName);

  2134     }

  2136     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2137         String typeName = jc.getClassName(type);

  2138         int dim = readUByte(byteCodes, ++i);

  2139         StringBuilder dims = new StringBuilder();

  2140         dims.append('[');

  2141         for (int d = 0; d < dim; d++) {

  2142             if (d != 0) {

  2143                 dims.insert(1, ",");

  2144             }

  2145             dims.insert(1, smapper.popI());

  2146         }

  2147         dims.append(']');

  2148         emit(smapper, this,

  2149             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II']('@3', @1, 0);",

  2150              dims.toString(), smapper.pushA(), typeName);

  2151         return i;

  2152     }

  2154     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2155         int table = i / 4 * 4 + 4;

  2156         int dflt = i + readInt4(byteCodes, table);

  2157         table += 4;

  2158         int low = readInt4(byteCodes, table);

  2159         table += 4;

  2160         int high = readInt4(byteCodes, table);

  2161         table += 4;

  2162         final CharSequence swVar = smapper.popValue();

  2163         smapper.flush(this);

  2164         append("switch (").append(swVar).append(") {\n");

  2165         while (low <= high) {

  2166             int offset = i + readInt4(byteCodes, table);

  2167             table += 4;

  2168             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2169             low++;

  2170         }

  2171         append("  default: ");

  2172         goTo(this, i, dflt, topMostLabel);

  2173         append("\n}");

  2174         i = table - 1;

  2175         return i;

  2176     }

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

  2179         int table = i / 4 * 4 + 4;

  2180         int dflt = i + readInt4(byteCodes, table);

  2181         table += 4;

  2182         int n = readInt4(byteCodes, table);

  2183         table += 4;

  2184         final CharSequence swVar = smapper.popValue();

  2185         smapper.flush(this);

  2186         append("switch (").append(swVar).append(") {\n");

  2187         while (n-- > 0) {

  2188             int cnstnt = readInt4(byteCodes, table);

  2189             table += 4;

  2190             int offset = i + readInt4(byteCodes, table);

  2191             table += 4;

  2192             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2193         }

  2194         append("  default: ");

  2195         goTo(this, i, dflt, topMostLabel);

  2196         append("\n}");

  2197         i = table - 1;

  2198         return i;

  2199     }

  2201     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2202         final String type = jc.getClassName(indx);

  2203         if (!type.startsWith("[")) {

  2204             emit(smapper, this,

  2205                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2206                  smapper.popA(), smapper.pushI(),

  2207                  type.replace('/', '_'));

  2208         } else {

  2209             emit(smapper, this,

  2210                 "var @2 = vm.java_lang_Class(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('@3')['isInstance__ZLjava_lang_Object_2'](@1);",

  2211                 smapper.popA(), smapper.pushI(),

  2212                 type

  2213             );

  2214         }

  2215     }

  2217     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2218         final String type = jc.getClassName(indx);

  2219         if (!type.startsWith("[")) {

  2220             emitNoFlush(smapper,

  2221                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2222                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2223         } else {

  2224             emitNoFlush(smapper,

  2225                 "vm.java_lang_Class(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('@2')['cast__Ljava_lang_Object_2Ljava_lang_Object_2'](@1);",

  2226                  smapper.getT(0, VarType.REFERENCE, false), type

  2227             );

  2228         }

  2229     }

  2231     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2232         for (int j = prev; j <= i; j++) {

  2233             append(" ");

  2234             final int cc = readUByte(byteCodes, j);

  2235             append(Integer.toString(cc));

  2236         }

  2237     }

  2238 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Thu, 01 May 2014 13:43:36 +0200
branch	closure
changeset 1515	d6d1fc565854
parent 1514	d2401e2648af
child 1522	0d32bf6b4436
permissions	-rw-r--r--