hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@999cf0169156

     1 /**

     2  * Back 2 Browser Bytecode Translator

     3  * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

    22 import org.apidesign.bck2brwsr.core.JavaScriptBody;

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

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

    26  *

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

    28  */

    29 abstract class ByteCodeToJavaScript implements Appendable {

    30     private ClassData jc;

    31     private final Appendable out;

    32     private final StringArray classRefs = new StringArray();

    33     private boolean outChanged;

    34     private boolean callbacks;

    36     protected ByteCodeToJavaScript(Appendable out) {

    37         this.out = out;

    38     }

    40     @Override

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

    42         out.append(csq);

    43         outChanged = true;

    44         return this;

    45     }

    47     @Override

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

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

    50         outChanged = true;

    51         return this;

    52     }

    54     @Override

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

    56         out.append(c);

    57         outChanged = true;

    58         return this;

    59     }

    61     /* Collects additional required resources.

    62      *

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

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

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

    66      */

    67     protected abstract boolean requireReference(String internalClassName);

    69     /*

    70      * @param resourcePath name of resources to read

    71      */

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

    74     protected abstract void requireResource(String resourcePath) throws IOException;

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

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

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

    79      *

    80      * @param className suggested name of the class

    81      */

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

    83         return className + " = ";

    84     }

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

    86         return classOperation;

    87     }

    89     final String accessClassFalse(String classOperation) {

    90         if (jc.getClassName().replace('/', '_').equals(classOperation)) {

    91             return "c";

    92         }

    93         classRefs.addIfMissing(classOperation);

    94         return "(refs_" + classOperation + " || (refs_" + classOperation + " = " + accessClass(classOperation) + "(false)))";

    95     }

    97     protected String accessField(String object, String mangledName,

    98                                  String[] fieldInfoName) throws IOException {

    99         return object + "." + mangledName;

   100     }

   102     protected String accessStaticMethod(

   103                              String object,

   104                              String mangledName,

   105                              String[] fieldInfoName) throws IOException {

   106         return object + "." + mangledName;

   107     }

   109     protected String accessVirtualMethod(

   110             String object,

   111             String mangledName,

   112             String[] fieldInfoName,

   113             int params

   114     ) throws IOException {

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

   116     }

   118     protected void declaredClass(ClassData classData, String mangledName)

   119             throws IOException {

   120     }

   122     protected void declaredField(FieldData fieldData,

   123                                  String destObject,

   124                                  String mangledName) throws IOException {

   125     }

   127     protected void declaredMethod(MethodData methodData,

   128                                   String destObject,

   129                                   String mangledName) throws IOException {

   130     }

   132     /** Prints out a debug message.

   133      *

   134      * @param msg the message

   135      * @return true if the message has been printed

   136      * @throws IOException

   137      */

   138     boolean debug(String msg) throws IOException {

   139         append(msg);

   140         return true;

   141     }

   143     /**

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

   145      *

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

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

   148      *

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

   150      */

   152     public String compile(InputStream classFile) throws IOException {

   153         return compile(new ClassData(classFile));

   154     }

   156     protected String compile(ClassData classData) throws IOException {

   157         this.jc = classData;

   158         final String cn = this.jc.getClassName();

   159         try {

   160             return compileImpl(cn);

   161         } catch (IOException ex) {

   162             throw new IOException("Cannot compile " + cn + ":", ex);

   163         }

   164     }

   166     private String compileImpl(final String cn) throws IOException {

   167         this.callbacks = cn.endsWith("/$JsCallbacks$");

   168         if (jc.getMajor_version() < 50 && !cn.endsWith("/package-info")) {

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

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

   171             );

   172         }

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

   174         {

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

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

   177                 "resource", "processByteCode"

   178             );

   179             if (arr != null) {

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

   181                     requireScript(arr[0]);

   182                 }

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

   184                     return null;

   185                 }

   186             }

   187         }

   188         final String jsResource;

   189         {

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

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

   192                 "value"

   193             );

   194             if (arr != null) {

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

   196                     jsResource = arr[0];

   197                 } else {

   198                     int last = cn.lastIndexOf('/');

   199                     jsResource = cn.substring(0, last + 1).replace('.', '/') + arr[0];

   200                 }

   201             } else {

   202                 jsResource = null;

   203             }

   204         }

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

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

   207             "container", "prototype"

   208         );

   209         StringArray toInitilize = new StringArray();

   210         final String className = className(jc);

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

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

   213         append("\n  var m;");

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

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

   216         if (proto == null) {

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

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

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

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

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

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

   223         } else {

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

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

   226                 proto[0] = "p";

   227             }

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

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

   230         }

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

   232             if (v.isStatic()) {

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

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

   235                         continue;

   236                     }

   237                 }

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

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

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

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

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

   243             } else {

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

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

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

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

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

   249                     .append("; };");

   250             }

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

   253         }

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

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

   256             if (javaScriptOnly(onlyArr)) continue;

   257             String destObject;

   258             String mn;

   259             append("\n    ");

   260             if (m.isStatic()) {

   261                 destObject = "c";

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

   263             } else {

   264                 if (m.isConstructor()) {

   265                     destObject = "CLS";

   266                     mn = generateInstanceMethod(destObject, m);

   267                 } else {

   268                     destObject = "c";

   269                     mn = generateInstanceMethod(destObject, m);

   270                 }

   271             }

   272             declaredMethod(m, destObject, mn);

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

   274             if (runAnno != null) {

   275                 append("\n    m.anno = {");

   276                 generateAnno(jc, runAnno);

   277                 append("\n    };");

   278             }

   279             append("\n    m.access = " + m.getAccess()).append(";");

   280             append("\n    m.cls = CLS;");

   281         }

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

   283         append("\n    function ").append(className).append("fillInstOf(x) {");

   284         String instOfName = "$instOf_" + className;

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

   286         if (jc.isInterface()) {

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

   288                 if ((m.getAccess() & ACC_ABSTRACT) == 0

   289                     && (m.getAccess() & ACC_STATIC) == 0

   290                     && (m.getAccess() & ACC_PRIVATE) == 0) {

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

   292                     append("\n        if (!x['").append(mn).append("']) Object.defineProperty(x, '").append(mn).append("', { value : c['").append(mn).append("']});");

   293                 }

   294             }

   295         }

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

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

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

   299             requireReference(superInterface);

   300         }

   301         append("\n    }");

   302         append("\n    if (!c.hasOwnProperty('fillInstOf')) Object.defineProperty(c, 'fillInstOf', { value: ").append(className).append("fillInstOf });");

   303         append("\n    ").append(className).append("fillInstOf(c);");

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

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

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

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

   308         append("\n    CLS.$class.jvmName = '").append(cn).append("';");

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

   310         append("\n    CLS.$class.interfaces = function() { return [");

   311         {

   312             boolean first = true;

   313             for (String intrfc : jc.getSuperInterfaces()) {

   314                 if (!first) {

   315                     append(",");

   316                 }

   317                 requireReference(intrfc);

   318                 String mangledIface = mangleClassName(intrfc);

   319                 append("\n        ");

   320                 append(accessClass(mangledIface)).append("(false).constructor.$class");

   321                 first = false;

   322             }

   323         }

   324         append("\n    ]; };");

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

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

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

   328         if (classAnno != null) {

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

   330             generateAnno(jc, classAnno);

   331             append("\n    };");

   332         }

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

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

   335         }

   336         for (String ref : classRefs.toArray()) {

   337             append("\n    var refs_").append(ref).append(";");

   338         }

   339         classRefs.clear();

   341         if (jsResource != null) {

   342             requireResource(jsResource);

   343         }

   345         append("\n  }");

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

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

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

   349         append("\n    }");

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

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

   352             if (javaScriptOnly(onlyArr)) continue;

   353             if (!v.isStatic()) {

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

   355                     append(className).append('_').

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

   357             }

   358         }

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

   360         append("\n  }");

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

   362         append("\n};");

   364         declaredClass(jc, className);

   366 //        StringBuilder sb = new StringBuilder();

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

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

   369 //        }

   370         return "";

   371     }

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

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

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

   376             "name", "value"

   377         );

   378         if (only != null) {

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

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

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

   382             }

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

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

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

   386             }

   387             return true;

   388         }

   389         return false;

   390     }

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

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

   393         if (jsb != null) {

   394             return jsb;

   395         }

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

   397         boolean defineProp = generateMethod(destObject, mn, m);

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

   399             if (defineProp) {

   400                 toInitilize.add(accessClassFalse(className(jc)) + "['" + mn + "']");

   401             } else {

   402                 toInitilize.add(accessClassFalse(className(jc)) + "." + mn);

   403             }

   404         }

   405         return mn;

   406     }

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

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

   410         if (jsb != null) {

   411             return jsb;

   412         }

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

   414         generateMethod(destObject, mn, m);

   415         return mn;

   416     }

   418     private boolean generateMethod(String destObject, String name, MethodData m)

   419             throws IOException {

   420         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   421         TrapDataIterator trap = m.getTrapDataIterator();

   422         final LocalsMapper lmapper =

   423                 new LocalsMapper(stackMapIterator.getArguments());

   425         boolean defineProp =

   426             "java/lang/Object".equals(jc.getClassName()) ||

   427             "java/lang/reflect/Array".equals(jc.getClassName());

   429         if (defineProp) {

   430             append("Object.defineProperty(").append(destObject).

   431             append(", '").append(name).append("', { configurable: true, writable: true, value: m = function(");

   432         } else {

   433             append("m = ").append(destObject).append(".").append(name).append(" = function(");

   434         }

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

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

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

   439         if (byteCodes == null) {

   440             if (debug("  throw 'no code found for ")) {

   441                this

   442                .append(jc.getClassName()).append('.')

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

   444             }

   445             if (defineProp) {

   446                 append("}});");

   447             } else {

   448                 append("};");

   449             }

   450             return defineProp;

   451         }

   453         final StackMapper smapper = new StackMapper();

   455         if (!m.isStatic()) {

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

   457         }

   459         int lastStackFrame;

   460         TrapData[] previousTrap = null;

   461         boolean wide = false;

   462         boolean didBranches;

   463         if (stackMapIterator.isEmpty()) {

   464             didBranches = false;

   465             lastStackFrame = 0;

   466         } else {

   467             didBranches = true;

   468             lastStackFrame = -1;

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

   470         }

   472         int openBraces = 0;

   473         int topMostLabel = 0;

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

   475             int prev = i;

   476             outChanged = false;

   477             stackMapIterator.advanceTo(i);

   478             boolean changeInCatch = trap.advanceTo(i);

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

   480                 if (previousTrap != null) {

   481                     generateCatch(previousTrap, i, topMostLabel);

   482                     previousTrap = null;

   483                 }

   484             }

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

   486                 smapper.flush(this);

   487                 if (i != 0) {

   488                     append("    }\n");

   489                 }

   490                 if (openBraces > 64) {

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

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

   493                     }

   494                     openBraces = 1;

   495                     topMostLabel = i;

   496                 }

   498                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   502                 openBraces++;

   503                 changeInCatch = true;

   504             } else {

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

   506             }

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

   508                 append("try {");

   509                 previousTrap = trap.current();

   510             }

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

   512             switch (c) {

   513                 case opc_aload_0:

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

   515                     break;

   516                 case opc_iload_0:

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

   518                     break;

   519                 case opc_lload_0:

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

   521                     break;

   522                 case opc_fload_0:

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

   524                     break;

   525                 case opc_dload_0:

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

   527                     break;

   528                 case opc_aload_1:

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

   530                     break;

   531                 case opc_iload_1:

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

   533                     break;

   534                 case opc_lload_1:

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

   536                     break;

   537                 case opc_fload_1:

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

   539                     break;

   540                 case opc_dload_1:

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

   542                     break;

   543                 case opc_aload_2:

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

   545                     break;

   546                 case opc_iload_2:

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

   548                     break;

   549                 case opc_lload_2:

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

   551                     break;

   552                 case opc_fload_2:

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

   554                     break;

   555                 case opc_dload_2:

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

   557                     break;

   558                 case opc_aload_3:

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

   560                     break;

   561                 case opc_iload_3:

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

   563                     break;

   564                 case opc_lload_3:

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

   566                     break;

   567                 case opc_fload_3:

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

   569                     break;

   570                 case opc_dload_3:

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

   572                     break;

   573                 case opc_iload: {

   574                     ++i;

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

   576                                           : readUByte(byteCodes, i);

   577                     wide = false;

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

   579                     break;

   580                 }

   581                 case opc_lload: {

   582                     ++i;

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

   584                                           : readUByte(byteCodes, i);

   585                     wide = false;

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

   587                     break;

   588                 }

   589                 case opc_fload: {

   590                     ++i;

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

   592                                           : readUByte(byteCodes, i);

   593                     wide = false;

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

   595                     break;

   596                 }

   597                 case opc_dload: {

   598                     ++i;

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

   600                                           : readUByte(byteCodes, i);

   601                     wide = false;

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

   603                     break;

   604                 }

   605                 case opc_aload: {

   606                     ++i;

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

   608                                           : readUByte(byteCodes, i);

   609                     wide = false;

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

   611                     break;

   612                 }

   613                 case opc_istore: {

   614                     ++i;

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

   616                                           : readUByte(byteCodes, i);

   617                     wide = false;

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

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

   620                     break;

   621                 }

   622                 case opc_lstore: {

   623                     ++i;

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

   625                                           : readUByte(byteCodes, i);

   626                     wide = false;

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

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

   629                     break;

   630                 }

   631                 case opc_fstore: {

   632                     ++i;

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

   634                                           : readUByte(byteCodes, i);

   635                     wide = false;

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

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

   638                     break;

   639                 }

   640                 case opc_dstore: {

   641                     ++i;

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

   643                                           : readUByte(byteCodes, i);

   644                     wide = false;

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

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

   647                     break;

   648                 }

   649                 case opc_astore: {

   650                     ++i;

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

   652                                           : readUByte(byteCodes, i);

   653                     wide = false;

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

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

   656                     break;

   657                 }

   658                 case opc_astore_0:

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

   660                     break;

   661                 case opc_istore_0:

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

   663                     break;

   664                 case opc_lstore_0:

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

   666                     break;

   667                 case opc_fstore_0:

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

   669                     break;

   670                 case opc_dstore_0:

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

   672                     break;

   673                 case opc_astore_1:

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

   675                     break;

   676                 case opc_istore_1:

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

   678                     break;

   679                 case opc_lstore_1:

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

   681                     break;

   682                 case opc_fstore_1:

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

   684                     break;

   685                 case opc_dstore_1:

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

   687                     break;

   688                 case opc_astore_2:

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

   690                     break;

   691                 case opc_istore_2:

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

   693                     break;

   694                 case opc_lstore_2:

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

   696                     break;

   697                 case opc_fstore_2:

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

   699                     break;

   700                 case opc_dstore_2:

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

   702                     break;

   703                 case opc_astore_3:

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

   705                     break;

   706                 case opc_istore_3:

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

   708                     break;

   709                 case opc_lstore_3:

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

   711                     break;

   712                 case opc_fstore_3:

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

   714                     break;

   715                 case opc_dstore_3:

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

   717                     break;

   718                 case opc_iadd:

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

   720                     break;

   721                 case opc_ladd:

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

   723                     break;

   724                 case opc_fadd:

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

   726                     break;

   727                 case opc_dadd:

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

   729                     break;

   730                 case opc_isub:

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

   732                     break;

   733                 case opc_lsub:

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

   735                     break;

   736                 case opc_fsub:

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

   738                     break;

   739                 case opc_dsub:

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

   741                     break;

   742                 case opc_imul:

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

   744                     break;

   745                 case opc_lmul:

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

   747                     break;

   748                 case opc_fmul:

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

   750                     break;

   751                 case opc_dmul:

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

   753                     break;

   754                 case opc_idiv:

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

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

   757                     break;

   758                 case opc_ldiv:

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

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

   761                     break;

   762                 case opc_fdiv:

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

   764                     break;

   765                 case opc_ddiv:

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

   767                     break;

   768                 case opc_irem:

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

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

   771                     break;

   772                 case opc_lrem:

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

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

   775                     break;

   776                 case opc_frem:

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

   778                     break;

   779                 case opc_drem:

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

   781                     break;

   782                 case opc_iand:

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

   784                     break;

   785                 case opc_land:

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

   787                     break;

   788                 case opc_ior:

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

   790                     break;

   791                 case opc_lor:

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

   793                     break;

   794                 case opc_ixor:

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

   796                     break;

   797                 case opc_lxor:

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

   799                     break;

   800                 case opc_ineg:

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

   802                     break;

   803                 case opc_lneg:

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

   805                     break;

   806                 case opc_fneg:

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

   808                     break;

   809                 case opc_dneg:

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

   811                     break;

   812                 case opc_ishl:

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

   814                     break;

   815                 case opc_lshl:

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

   817                     break;

   818                 case opc_ishr:

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

   820                     break;

   821                 case opc_lshr:

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

   823                     break;

   824                 case opc_iushr:

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

   826                     break;

   827                 case opc_lushr:

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

   829                     break;

   830                 case opc_iinc: {

   831                     ++i;

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

   833                                              : readUByte(byteCodes, i);

   834                     ++i;

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

   836                                             : byteCodes[i];

   837                     wide = false;

   838                     if (incrBy == 1) {

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

   840                     } else {

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

   842                              lmapper.getI(varIndx),

   843                              Integer.toString(incrBy));

   844                     }

   845                     break;

   846                 }

   847                 case opc_return:

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

   849                     break;

   850                 case opc_ireturn:

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

   852                     break;

   853                 case opc_lreturn:

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

   855                     break;

   856                 case opc_freturn:

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

   858                     break;

   859                 case opc_dreturn:

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

   861                     break;

   862                 case opc_areturn:

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

   864                     break;

   865                 case opc_i2l:

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

   867                     break;

   868                 case opc_i2f:

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

   870                     break;

   871                 case opc_i2d:

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

   873                     break;

   874                 case opc_l2i:

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

   876                     break;

   877                     // max int check?

   878                 case opc_l2f:

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

   880                     break;

   881                 case opc_l2d:

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

   883                     break;

   884                 case opc_f2d:

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

   886                          smapper.getF(0));

   887                     break;

   888                 case opc_d2f:

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

   890                          smapper.getD(0));

   891                     break;

   892                 case opc_f2i:

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

   894                          smapper.getF(0));

   895                     break;

   896                 case opc_f2l:

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

   898                          smapper.getF(0));

   899                     break;

   900                 case opc_d2i:

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

   902                          smapper.getD(0));

   903                     break;

   904                 case opc_d2l:

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

   906                     break;

   907                 case opc_i2b:

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

   909                     break;

   910                 case opc_i2c:

   911                 case opc_i2s:

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

   913                     break;

   914                 case opc_aconst_null:

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

   916                     break;

   917                 case opc_iconst_m1:

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

   919                     break;

   920                 case opc_iconst_0:

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

   922                     break;

   923                 case opc_dconst_0:

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

   925                     break;

   926                 case opc_lconst_0:

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

   928                     break;

   929                 case opc_fconst_0:

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

   931                     break;

   932                 case opc_iconst_1:

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

   934                     break;

   935                 case opc_lconst_1:

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

   937                     break;

   938                 case opc_fconst_1:

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

   940                     break;

   941                 case opc_dconst_1:

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

   943                     break;

   944                 case opc_iconst_2:

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

   946                     break;

   947                 case opc_fconst_2:

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

   949                     break;

   950                 case opc_iconst_3:

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

   952                     break;

   953                 case opc_iconst_4:

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

   955                     break;

   956                 case opc_iconst_5:

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

   958                     break;

   959                 case opc_ldc: {

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

   961                     String v = encodeConstant(indx);

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

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

   964                     break;

   965                 }

   966                 case opc_ldc_w:

   967                 case opc_ldc2_w: {

   968                     int indx = readUShortArg(byteCodes, i);

   969                     i += 2;

   970                     String v = encodeConstant(indx);

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

   972                     if (type == VarType.LONG) {

   973                         final Long lv = new Long(v);

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

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

   976                         if (hi == 0) {

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

   978                         } else {

   979                             smapper.assign(this, VarType.LONG,

   980                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   981                                     Integer.toHexString(low) + ")"

   982                             );

   983                         }

   984                     } else {

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

   986                     }

   987                     break;

   988                 }

   989                 case opc_lcmp:

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

   991                     break;

   992                 case opc_fcmpl:

   993                 case opc_fcmpg:

   994                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

   995                          smapper.popF(), smapper.popF(), smapper.pushI());

   996                     break;

   997                 case opc_dcmpl:

   998                 case opc_dcmpg:

   999                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1000                          smapper.popD(), smapper.popD(), smapper.pushI());

  1001                     break;

  1002                 case opc_if_acmpeq:

  1003                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1004                                    "===", topMostLabel);

  1005                     break;

  1006                 case opc_if_acmpne:

  1007                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1008                                    "!==", topMostLabel);

  1009                     break;

  1010                 case opc_if_icmpeq:

  1011                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1012                                    "==", topMostLabel);

  1013                     break;

  1014                 case opc_ifeq: {

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

  1016                     emitIf(smapper, this, "if ((@1) == 0) ",

  1017                          smapper.popI(), i, indx, topMostLabel);

  1018                     i += 2;

  1019                     break;

  1020                 }

  1021                 case opc_ifne: {

  1022                     int indx = i + readShortArg(byteCodes, i);

  1023                     emitIf(smapper, this, "if ((@1) != 0) ",

  1024                          smapper.popI(), i, indx, topMostLabel);

  1025                     i += 2;

  1026                     break;

  1027                 }

  1028                 case opc_iflt: {

  1029                     int indx = i + readShortArg(byteCodes, i);

  1030                     emitIf(smapper, this, "if ((@1) < 0) ",

  1031                          smapper.popI(), i, indx, topMostLabel);

  1032                     i += 2;

  1033                     break;

  1034                 }

  1035                 case opc_ifle: {

  1036                     int indx = i + readShortArg(byteCodes, i);

  1037                     emitIf(smapper, this, "if ((@1) <= 0) ",

  1038                          smapper.popI(), i, indx, topMostLabel);

  1039                     i += 2;

  1040                     break;

  1041                 }

  1042                 case opc_ifgt: {

  1043                     int indx = i + readShortArg(byteCodes, i);

  1044                     emitIf(smapper, this, "if ((@1) > 0) ",

  1045                          smapper.popI(), i, indx, topMostLabel);

  1046                     i += 2;

  1047                     break;

  1048                 }

  1049                 case opc_ifge: {

  1050                     int indx = i + readShortArg(byteCodes, i);

  1051                     emitIf(smapper, this, "if ((@1) >= 0) ",

  1052                          smapper.popI(), i, indx, topMostLabel);

  1053                     i += 2;

  1054                     break;

  1055                 }

  1056                 case opc_ifnonnull: {

  1057                     int indx = i + readShortArg(byteCodes, i);

  1058                     emitIf(smapper, this, "if ((@1) !== null) ",

  1059                          smapper.popA(), i, indx, topMostLabel);

  1060                     i += 2;

  1061                     break;

  1062                 }

  1063                 case opc_ifnull: {

  1064                     int indx = i + readShortArg(byteCodes, i);

  1065                     emitIf(smapper, this, "if ((@1) === null) ",

  1066                          smapper.popA(), i, indx, topMostLabel);

  1067                     i += 2;

  1068                     break;

  1069                 }

  1070                 case opc_if_icmpne:

  1071                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1072                                    "!=", topMostLabel);

  1073                     break;

  1074                 case opc_if_icmplt:

  1075                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1076                                    "<", topMostLabel);

  1077                     break;

  1078                 case opc_if_icmple:

  1079                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1080                                    "<=", topMostLabel);

  1081                     break;

  1082                 case opc_if_icmpgt:

  1083                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1084                                    ">", topMostLabel);

  1085                     break;

  1086                 case opc_if_icmpge:

  1087                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1088                                    ">=", topMostLabel);

  1089                     break;

  1090                 case opc_goto: {

  1091                     smapper.flush(this);

  1092                     int indx = i + readShortArg(byteCodes, i);

  1093                     goTo(this, i, indx, topMostLabel);

  1094                     i += 2;

  1095                     break;

  1096                 }

  1097                 case opc_lookupswitch: {

  1098                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1099                     break;

  1100                 }

  1101                 case opc_tableswitch: {

  1102                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1103                     break;

  1104                 }

  1105                 case opc_invokeinterface: {

  1106                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1107                     break;

  1108                 }

  1109                 case opc_invokevirtual:

  1110                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1111                     break;

  1112                 case opc_invokespecial:

  1113                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1114                     break;

  1115                 case opc_invokestatic:

  1116                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1117                     break;

  1118                 case opc_invokedynamic: {

  1119                     int indx = readUShortArg(byteCodes, i);

  1120                     println("invoke dynamic: " + indx);

  1121                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1122                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1123                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1124                     println("  type: " + methodHandle.cpx1);

  1125                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1126                     String mcn = mangleClassName(mi[0]);

  1127                     char[] returnType = {'V'};

  1128                     StringBuilder cnt = new StringBuilder();

  1129                     String mn = findMethodName(mi, cnt, returnType);

  1130                     StringBuilder sb = new StringBuilder();

  1131                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1132                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1133                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1134                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1135                     sb.append("  mn   : ").append(mn).append("\n");

  1136                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1137                     throw new IOException(sb.toString());

  1138                     /*

  1139                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1140                     String type = jc.StringValue(nameAndType.cpx2);

  1141                     String object = accessClass(mcn) + "(false)";

  1142                     if (mn.startsWith("cons_")) {

  1143                         object += ".constructor";

  1144                     }

  1145                     append("var metHan = ");

  1146                     append(accessStaticMethod(object, mn, mi));

  1147                     append('(');

  1148                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1149                     append(lookup);

  1150                     append(", '").append(mi[1]).append("', ");

  1151                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1152                     append(methodType).append("'").append(type).append("', null)");

  1153 //                    if (numArguments > 0) {

  1154 //                        append(vars[0]);

  1155 //                        for (int j = 1; j < numArguments; ++j) {

  1156 //                            append(", ");

  1157 //                            append(vars[j]);

  1158 //                        }

  1159 //                    }

  1160                     append(");");

  1161                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1162                     i += 4;

  1163                     break;

  1164                     */

  1165                 }

  1166                 case opc_new: {

  1167                     int indx = readUShortArg(byteCodes, i);

  1168                     String ci = jc.getClassName(indx);

  1169                     emit(smapper, this, "var @1 = new @2;",

  1170                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1171                     addReference(ci);

  1172                     i += 2;

  1173                     break;

  1174                 }

  1175                 case opc_newarray:

  1176                     int atype = readUByte(byteCodes, ++i);

  1177                     generateNewArray(atype, smapper);

  1178                     break;

  1179                 case opc_anewarray: {

  1180                     int type = readUShortArg(byteCodes, i);

  1181                     i += 2;

  1182                     generateANewArray(type, smapper);

  1183                     break;

  1184                 }

  1185                 case opc_multianewarray: {

  1186                     int type = readUShortArg(byteCodes, i);

  1187                     i += 2;

  1188                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1189                     break;

  1190                 }

  1191                 case opc_arraylength:

  1192                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1193                     break;

  1194                 case opc_lastore:

  1195                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1196                          smapper.popL(), smapper.popI(), smapper.popA());

  1197                     break;

  1198                 case opc_fastore:

  1199                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1200                          smapper.popF(), smapper.popI(), smapper.popA());

  1201                     break;

  1202                 case opc_dastore:

  1203                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1204                          smapper.popD(), smapper.popI(), smapper.popA());

  1205                     break;

  1206                 case opc_aastore:

  1207                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1208                          smapper.popA(), smapper.popI(), smapper.popA());

  1209                     break;

  1210                 case opc_iastore:

  1211                 case opc_bastore:

  1212                 case opc_castore:

  1213                 case opc_sastore:

  1214                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1215                          smapper.popI(), smapper.popI(), smapper.popA());

  1216                     break;

  1217                 case opc_laload:

  1218                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1219                          smapper.popI(), smapper.getA(0));

  1220                     break;

  1221                 case opc_faload:

  1222                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1223                          smapper.popI(), smapper.getA(0));

  1224                     break;

  1225                 case opc_daload:

  1226                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1227                          smapper.popI(), smapper.getA(0));

  1228                     break;

  1229                 case opc_aaload:

  1230                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1231                          smapper.popI(), smapper.getA(0));

  1232                     break;

  1233                 case opc_iaload:

  1234                 case opc_baload:

  1235                 case opc_caload:

  1236                 case opc_saload:

  1237                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1238                          smapper.popI(), smapper.getA(0));

  1239                     break;

  1240                 case opc_pop:

  1241                 case opc_pop2:

  1242                     smapper.pop(1);

  1243                     debug("/* pop */");

  1244                     break;

  1245                 case opc_dup: {

  1246                     final Variable v = smapper.get(0);

  1247                     if (smapper.isDirty()) {

  1248                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1249                     } else {

  1250                         smapper.assign(this, v.getType(), v);

  1251                     }

  1252                     break;

  1253                 }

  1254                 case opc_dup2: {

  1255                     final Variable vi1 = smapper.get(0);

  1257                     if (vi1.isCategory2()) {

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

  1259                              smapper.pushT(vi1.getType()), vi1);

  1260                     } else {

  1261                         final Variable vi2 = smapper.get(1);

  1262                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1263                              smapper.pushT(vi2.getType()), vi2,

  1264                              smapper.pushT(vi1.getType()), vi1);

  1265                     }

  1266                     break;

  1267                 }

  1268                 case opc_dup_x1: {

  1269                     final Variable vi1 = smapper.pop(this);

  1270                     final Variable vi2 = smapper.pop(this);

  1271                     final Variable vo3 = smapper.pushT(vi1.getType());

  1272                     final Variable vo2 = smapper.pushT(vi2.getType());

  1273                     final Variable vo1 = smapper.pushT(vi1.getType());

  1275                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1276                          vo1, vi1, vo2, vi2, vo3, vo1);

  1277                     break;

  1278                 }

  1279                 case opc_dup2_x1: {

  1280                     final Variable vi1 = smapper.pop(this);

  1281                     final Variable vi2 = smapper.pop(this);

  1283                     if (vi1.isCategory2()) {

  1284                         final Variable vo3 = smapper.pushT(vi1.getType());

  1285                         final Variable vo2 = smapper.pushT(vi2.getType());

  1286                         final Variable vo1 = smapper.pushT(vi1.getType());

  1288                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1289                              vo1, vi1, vo2, vi2, vo3, vo1);

  1290                     } else {

  1291                         final Variable vi3 = smapper.pop(this);

  1292                         final Variable vo5 = smapper.pushT(vi2.getType());

  1293                         final Variable vo4 = smapper.pushT(vi1.getType());

  1294                         final Variable vo3 = smapper.pushT(vi3.getType());

  1295                         final Variable vo2 = smapper.pushT(vi2.getType());

  1296                         final Variable vo1 = smapper.pushT(vi1.getType());

  1298                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1299                              vo1, vi1, vo2, vi2, vo3, vi3);

  1300                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1301                              vo4, vo1, vo5, vo2);

  1302                     }

  1303                     break;

  1304                 }

  1305                 case opc_dup_x2: {

  1306                     final Variable vi1 = smapper.pop(this);

  1307                     final Variable vi2 = smapper.pop(this);

  1309                     if (vi2.isCategory2()) {

  1310                         final Variable vo3 = smapper.pushT(vi1.getType());

  1311                         final Variable vo2 = smapper.pushT(vi2.getType());

  1312                         final Variable vo1 = smapper.pushT(vi1.getType());

  1314                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1315                              vo1, vi1, vo2, vi2, vo3, vo1);

  1316                     } else {

  1317                         final Variable vi3 = smapper.pop(this);

  1318                         final Variable vo4 = smapper.pushT(vi1.getType());

  1319                         final Variable vo3 = smapper.pushT(vi3.getType());

  1320                         final Variable vo2 = smapper.pushT(vi2.getType());

  1321                         final Variable vo1 = smapper.pushT(vi1.getType());

  1323                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1324                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1325                     }

  1326                     break;

  1327                 }

  1328                 case opc_dup2_x2: {

  1329                     final Variable vi1 = smapper.pop(this);

  1330                     final Variable vi2 = smapper.pop(this);

  1332                     if (vi1.isCategory2()) {

  1333                         if (vi2.isCategory2()) {

  1334                             final Variable vo3 = smapper.pushT(vi1.getType());

  1335                             final Variable vo2 = smapper.pushT(vi2.getType());

  1336                             final Variable vo1 = smapper.pushT(vi1.getType());

  1338                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1339                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1340                         } else {

  1341                             final Variable vi3 = smapper.pop(this);

  1342                             final Variable vo4 = smapper.pushT(vi1.getType());

  1343                             final Variable vo3 = smapper.pushT(vi3.getType());

  1344                             final Variable vo2 = smapper.pushT(vi2.getType());

  1345                             final Variable vo1 = smapper.pushT(vi1.getType());

  1347                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1348                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1349                         }

  1350                     } else {

  1351                         final Variable vi3 = smapper.pop(this);

  1353                         if (vi3.isCategory2()) {

  1354                             final Variable vo5 = smapper.pushT(vi2.getType());

  1355                             final Variable vo4 = smapper.pushT(vi1.getType());

  1356                             final Variable vo3 = smapper.pushT(vi3.getType());

  1357                             final Variable vo2 = smapper.pushT(vi2.getType());

  1358                             final Variable vo1 = smapper.pushT(vi1.getType());

  1360                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1361                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1362                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1363                                  vo4, vo1, vo5, vo2);

  1364                         } else {

  1365                             final Variable vi4 = smapper.pop(this);

  1366                             final Variable vo6 = smapper.pushT(vi2.getType());

  1367                             final Variable vo5 = smapper.pushT(vi1.getType());

  1368                             final Variable vo4 = smapper.pushT(vi4.getType());

  1369                             final Variable vo3 = smapper.pushT(vi3.getType());

  1370                             final Variable vo2 = smapper.pushT(vi2.getType());

  1371                             final Variable vo1 = smapper.pushT(vi1.getType());

  1373                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1374                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1375                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1376                                  vo5, vo1, vo6, vo2);

  1377                         }

  1378                     }

  1379                     break;

  1380                 }

  1381                 case opc_swap: {

  1382                     final Variable vi1 = smapper.get(0);

  1383                     final Variable vi2 = smapper.get(1);

  1385                     if (vi1.getType() == vi2.getType()) {

  1386                         final Variable tmp = smapper.pushT(vi1.getType());

  1388                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1389                              tmp, vi1, vi2);

  1390                         smapper.pop(1);

  1391                     } else {

  1392                         smapper.pop(2);

  1393                         smapper.pushT(vi1.getType());

  1394                         smapper.pushT(vi2.getType());

  1395                     }

  1396                     break;

  1397                 }

  1398                 case opc_bipush:

  1399                     smapper.assign(this, VarType.INTEGER,

  1400                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1401                     break;

  1402                 case opc_sipush:

  1403                     smapper.assign(this, VarType.INTEGER,

  1404                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1405                     );

  1406                     i += 2;

  1407                     break;

  1408                 case opc_getfield: {

  1409                     int indx = readUShortArg(byteCodes, i);

  1410                     String[] fi = jc.getFieldInfoName(indx);

  1411                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1412                     final String mangleClass = mangleClassName(fi[0]);

  1413                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1414                     smapper.replace(this, type, "@2.call(@1)",

  1415                          smapper.getA(0),

  1416                          accessField(mangleClassAccess,

  1417                                      "_" + fi[1], fi)

  1418                     );

  1419                     i += 2;

  1420                     addReference(fi[0]);

  1421                     break;

  1422                 }

  1423                 case opc_putfield: {

  1424                     int indx = readUShortArg(byteCodes, i);

  1425                     String[] fi = jc.getFieldInfoName(indx);

  1426                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1427                     final String mangleClass = mangleClassName(fi[0]);

  1428                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1429                     emit(smapper, this, "@3.call(@2, @1);",

  1430                          smapper.popT(type),

  1431                          smapper.popA(),

  1432                          accessField(mangleClassAccess,

  1433                                      "_" + fi[1], fi));

  1434                     i += 2;

  1435                     addReference(fi[0]);

  1436                     break;

  1437                 }

  1438                 case opc_getstatic: {

  1439                     int indx = readUShortArg(byteCodes, i);

  1440                     String[] fi = jc.getFieldInfoName(indx);

  1441                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1442                     String ac = accessClassFalse(mangleClassName(fi[0]));

  1443                     String af = accessField(ac, "_" + fi[1], fi);

  1444                     smapper.assign(this, type, af + "()");

  1445                     i += 2;

  1446                     addReference(fi[0]);

  1447                     break;

  1448                 }

  1449                 case opc_putstatic: {

  1450                     int indx = readUShortArg(byteCodes, i);

  1451                     String[] fi = jc.getFieldInfoName(indx);

  1452                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1453                     emit(smapper, this, "@1._@2(@3);",

  1454                          accessClassFalse(mangleClassName(fi[0])), fi[1],

  1455                          smapper.popT(type));

  1456                     i += 2;

  1457                     addReference(fi[0]);

  1458                     break;

  1459                 }

  1460                 case opc_checkcast: {

  1461                     int indx = readUShortArg(byteCodes, i);

  1462                     generateCheckcast(indx, smapper);

  1463                     i += 2;

  1464                     break;

  1465                 }

  1466                 case opc_instanceof: {

  1467                     int indx = readUShortArg(byteCodes, i);

  1468                     generateInstanceOf(indx, smapper);

  1469                     i += 2;

  1470                     break;

  1471                 }

  1472                 case opc_athrow: {

  1473                     final CharSequence v = smapper.popA();

  1474                     smapper.clear();

  1476                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1477                          smapper.pushA(), v);

  1478                     break;

  1479                 }

  1481                 case opc_monitorenter: {

  1482                     debug("/* monitor enter */");

  1483                     smapper.popA();

  1484                     break;

  1485                 }

  1487                 case opc_monitorexit: {

  1488                     debug("/* monitor exit */");

  1489                     smapper.popA();

  1490                     break;

  1491                 }

  1493                 case opc_wide:

  1494                     wide = true;

  1495                     break;

  1497                 default: {

  1498                     wide = false;

  1499                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1500                          Integer.toString(c));

  1501                 }

  1502             }

  1503             if (debug(" //")) {

  1504                 generateByteCodeComment(prev, i, byteCodes);

  1505             }

  1506             if (outChanged) {

  1507                 append("\n");

  1508             }

  1509         }

  1510         if (previousTrap != null) {

  1511             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1512         }

  1513         if (didBranches) {

  1514             append("\n    }\n");

  1515         }

  1516         while (openBraces-- > 0) {

  1517             append('}');

  1518         }

  1519         if (defineProp) {

  1520             append("\n}});");

  1521         } else {

  1522             append("\n};");

  1523         }

  1524         return defineProp;

  1525     }

  1527     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1528         int i, final CharSequence v2, final CharSequence v1,

  1529         final String test, int topMostLabel

  1530     ) throws IOException {

  1531         mapper.flush(this);

  1532         int indx = i + readShortArg(byteCodes, i);

  1533         append("if ((").append(v1)

  1534            .append(") ").append(test).append(" (")

  1535            .append(v2).append(")) ");

  1536         goTo(this, i, indx, topMostLabel);

  1537         return i + 2;

  1538     }

  1540     private int readInt4(byte[] byteCodes, int offset) {

  1541         final int d = byteCodes[offset + 0] << 24;

  1542         final int c = byteCodes[offset + 1] << 16;

  1543         final int b = byteCodes[offset + 2] << 8;

  1544         final int a = byteCodes[offset + 3];

  1545         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1546     }

  1547     private static int readUByte(byte[] byteCodes, int offset) {

  1548         return byteCodes[offset] & 0xff;

  1549     }

  1551     private static int readUShort(byte[] byteCodes, int offset) {

  1552         return ((byteCodes[offset] & 0xff) << 8)

  1553                     | (byteCodes[offset + 1] & 0xff);

  1554     }

  1555     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1556         return readUShort(byteCodes, offsetInstruction + 1);

  1557     }

  1559     private static int readShort(byte[] byteCodes, int offset) {

  1560         int signed = byteCodes[offset];

  1561         byte b0 = (byte)signed;

  1562         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1563     }

  1564     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1565         return readShort(byteCodes, offsetInstruction + 1);

  1566     }

  1568     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1569         int i = 0;

  1570         Boolean count = null;

  1571         boolean array = false;

  1572         sig.append("__");

  1573         int firstPos = sig.length();

  1574         while (i < descriptor.length()) {

  1575             char ch = descriptor.charAt(i++);

  1576             switch (ch) {

  1577                 case '(':

  1578                     count = true;

  1579                     continue;

  1580                 case ')':

  1581                     count = false;

  1582                     continue;

  1583                 case 'B':

  1584                 case 'C':

  1585                 case 'D':

  1586                 case 'F':

  1587                 case 'I':

  1588                 case 'J':

  1589                 case 'S':

  1590                 case 'Z':

  1591                     if (count) {

  1592                         if (array) {

  1593                             sig.append("_3");

  1594                         }

  1595                         sig.append(ch);

  1596                         if (ch == 'J' || ch == 'D') {

  1597                             cnt.append('1');

  1598                         } else {

  1599                             cnt.append('0');

  1600                         }

  1601                     } else {

  1602                         sig.insert(firstPos, ch);

  1603                         if (array) {

  1604                             returnType[0] = '[';

  1605                             sig.insert(firstPos, "_3");

  1606                         } else {

  1607                             returnType[0] = ch;

  1608                         }

  1609                     }

  1610                     array = false;

  1611                     continue;

  1612                 case 'V':

  1613                     assert !count;

  1614                     returnType[0] = 'V';

  1615                     sig.insert(firstPos, 'V');

  1616                     continue;

  1617                 case 'L':

  1618                     int next = descriptor.indexOf(';', i);

  1619                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1620                     if (count) {

  1621                         if (array) {

  1622                             sig.append("_3");

  1623                         }

  1624                         sig.append(realSig);

  1625                         cnt.append('0');

  1626                     } else {

  1627                         sig.insert(firstPos, realSig);

  1628                         if (array) {

  1629                             sig.insert(firstPos, "_3");

  1630                         }

  1631                         returnType[0] = 'L';

  1632                     }

  1633                     i = next + 1;

  1634                     array = false;

  1635                     continue;

  1636                 case '[':

  1637                     array = true;

  1638                     continue;

  1639                 default:

  1640                     throw new IllegalStateException("Invalid char: " + ch);

  1641             }

  1642         }

  1643     }

  1645     static String mangleSig(String sig) {

  1646         return mangleSig(sig, 0, sig.length());

  1647     }

  1649     private static String mangleMethodName(String name) {

  1650         StringBuilder sb = new StringBuilder(name.length() * 2);

  1651         int last = name.length();

  1652         for (int i = 0; i < last; i++) {

  1653             final char ch = name.charAt(i);

  1654             switch (ch) {

  1655                 case '_': sb.append("_1"); break;

  1656                 default: sb.append(ch); break;

  1657             }

  1658         }

  1659         return sb.toString();

  1660     }

  1661     private static String mangleSig(String txt, int first, int last) {

  1662         StringBuilder sb = new StringBuilder((last - first) * 2);

  1663         for (int i = first; i < last; i++) {

  1664             final char ch = txt.charAt(i);

  1665             switch (ch) {

  1666                 case '/': sb.append('_'); break;

  1667                 case '_': sb.append("_1"); break;

  1668                 case ';': sb.append("_2"); break;

  1669                 case '[': sb.append("_3"); break;

  1670                 default:

  1671                     if (Character.isJavaIdentifierPart(ch)) {

  1672                         sb.append(ch);

  1673                     } else {

  1674                         sb.append("_0");

  1675                         String hex = Integer.toHexString(ch).toLowerCase();

  1676                         for (int m = hex.length(); m < 4; m++) {

  1677                             sb.append("0");

  1678                         }

  1679                         sb.append(hex);

  1680                     }

  1681                 break;

  1682             }

  1683         }

  1684         return sb.toString();

  1685     }

  1687     private static String mangleClassName(String name) {

  1688         return mangleSig(name);

  1689     }

  1691     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1692         StringBuilder name = new StringBuilder();

  1693         if ("<init>".equals(m.getName())) { // NOI18N

  1694             name.append("cons"); // NOI18N

  1695         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1696             name.append("class"); // NOI18N

  1697         } else {

  1698             name.append(mangleMethodName(m.getName()));

  1699         }

  1701         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1702         return name.toString();

  1703     }

  1705     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1706         StringBuilder name = new StringBuilder();

  1707         String descr = mi[2];//mi.getDescriptor();

  1708         String nm= mi[1];

  1709         if ("<init>".equals(nm)) { // NOI18N

  1710             name.append("cons"); // NOI18N

  1711         } else {

  1712             name.append(mangleMethodName(nm));

  1713         }

  1714         countArgs(descr, returnType, name, cnt);

  1715         return name.toString();

  1716     }

  1718     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1719     throws IOException {

  1720         int methodIndex = readUShortArg(byteCodes, i);

  1721         String[] mi = jc.getFieldInfoName(methodIndex);

  1722         char[] returnType = { 'V' };

  1723         StringBuilder cnt = new StringBuilder();

  1724         String mn = findMethodName(mi, cnt, returnType);

  1726         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1727         final CharSequence[] vars = new CharSequence[numArguments];

  1729         for (int j = numArguments - 1; j >= 0; --j) {

  1730             vars[j] = mapper.popValue();

  1731         }

  1733         if ((

  1734             "newUpdater__Ljava_util_concurrent_atomic_AtomicIntegerFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1735             && "java/util/concurrent/atomic/AtomicIntegerFieldUpdater".equals(mi[0])

  1736         ) || (

  1737             "newUpdater__Ljava_util_concurrent_atomic_AtomicLongFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1738             && "java/util/concurrent/atomic/AtomicLongFieldUpdater".equals(mi[0])

  1739         )) {

  1740             if (vars[1] instanceof String) {

  1741                 String field = vars[1].toString();

  1742                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1743                     vars[1] = "c._" + field.substring(1, field.length() - 1);

  1744                 }

  1745             }

  1746         }

  1747         if (

  1748             "newUpdater__Ljava_util_concurrent_atomic_AtomicReferenceFieldUpdater_2Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1749             && "java/util/concurrent/atomic/AtomicReferenceFieldUpdater".equals(mi[0])

  1750         ) {

  1751             if (vars[1] instanceof String) {

  1752                 String field = vars[2].toString();

  1753                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1754                     vars[2] = "c._" + field.substring(1, field.length() - 1);

  1755                 }

  1756             }

  1757         }

  1759         if (returnType[0] != 'V') {

  1760             mapper.flush(this);

  1761             append("var ")

  1762                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1763                .append(" = ");

  1764         }

  1766         final String in = mi[0];

  1767         String mcn;

  1768         if (callbacks && (

  1769             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1770             in.equals("org/netbeans/html/boot/spi/Fn")

  1771         )) {

  1772             mcn = "java_lang_Class";

  1773         } else {

  1774             mcn = mangleClassName(in);

  1775         }

  1776         String object = accessClassFalse(mcn);

  1777         if (mn.startsWith("cons_")) {

  1778             object += ".constructor";

  1779         }

  1780         append(accessStaticMethod(object, mn, mi));

  1781         if (isStatic) {

  1782             append('(');

  1783         } else {

  1784             append(".call(");

  1785         }

  1786         if (numArguments > 0) {

  1787             append(vars[0]);

  1788             for (int j = 1; j < numArguments; ++j) {

  1789                 append(", ");

  1790                 append(vars[j]);

  1791             }

  1792         }

  1793         append(");");

  1794         i += 2;

  1795         addReference(in);

  1796         return i;

  1797     }

  1798     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1799     throws IOException {

  1800         int methodIndex = readUShortArg(byteCodes, i);

  1801         String[] mi = jc.getFieldInfoName(methodIndex);

  1802         char[] returnType = { 'V' };

  1803         StringBuilder cnt = new StringBuilder();

  1804         String mn = findMethodName(mi, cnt, returnType);

  1806         final int numArguments = cnt.length() + 1;

  1807         final CharSequence[] vars =  new CharSequence[numArguments];

  1809         for (int j = numArguments - 1; j >= 0; --j) {

  1810             vars[j] = mapper.popValue();

  1811         }

  1813         if (returnType[0] != 'V') {

  1814             mapper.flush(this);

  1815             append("var ")

  1816                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1817                .append(" = ");

  1818         }

  1820         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1821         String sep = "";

  1822         for (int j = 1; j < numArguments; ++j) {

  1823             append(sep);

  1824             append(vars[j]);

  1825             sep = ", ";

  1826         }

  1827         append(");");

  1828         i += 2;

  1829         return i;

  1830     }

  1832     private void addReference(String cn) throws IOException {

  1833         if (requireReference(cn)) {

  1834             debug(" /* needs " + cn + " */");

  1835         }

  1836     }

  1838     private void outType(String d, StringBuilder out) {

  1839         int arr = 0;

  1840         while (d.charAt(0) == '[') {

  1841             out.append('A');

  1842             d = d.substring(1);

  1843         }

  1844         if (d.charAt(0) == 'L') {

  1845             assert d.charAt(d.length() - 1) == ';';

  1846             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1847         } else {

  1848             out.append(d);

  1849         }

  1850     }

  1852     private String encodeConstant(int entryIndex) throws IOException {

  1853         String[] classRef = { null };

  1854         String s = jc.stringValue(entryIndex, classRef);

  1855         if (classRef[0] != null) {

  1856             if (classRef[0].startsWith("[")) {

  1857                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1858             } else {

  1859                 addReference(classRef[0]);

  1860                 s = accessClassFalse(mangleClassName(s)) + ".constructor.$class";

  1861             }

  1862         }

  1863         return s;

  1864     }

  1866     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1867         byte[] arr = m.findAnnotationData(true);

  1868         if (arr == null) {

  1869             return null;

  1870         }

  1871         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1872         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1873         class P extends AnnotationParser {

  1874             public P() {

  1875                 super(false, true);

  1876             }

  1878             int cnt;

  1879             String[] args = new String[30];

  1880             String body;

  1881             boolean javacall;

  1882             boolean html4j;

  1884             @Override

  1885             protected void visitAttr(String type, String attr, String at, String value) {

  1886                 if (type.equals(jvmType)) {

  1887                     if ("body".equals(attr)) {

  1888                         body = value;

  1889                     } else if ("args".equals(attr)) {

  1890                         args[cnt++] = value;

  1891                     } else {

  1892                         throw new IllegalArgumentException(attr);

  1893                     }

  1894                 }

  1895                 if (type.equals(htmlType)) {

  1896                     html4j = true;

  1897                     if ("body".equals(attr)) {

  1898                         body = value;

  1899                     } else if ("args".equals(attr)) {

  1900                         args[cnt++] = value;

  1901                     } else if ("javacall".equals(attr)) {

  1902                         javacall = "1".equals(value);

  1903                     } else if ("wait4js".equals(attr)) {

  1904                         // ignore, we always invoke synchronously

  1905                     } else {

  1906                         throw new IllegalArgumentException(attr);

  1907                     }

  1908                 }

  1909             }

  1910         }

  1911         P p = new P();

  1912         p.parse(arr, jc);

  1913         if (p.body == null) {

  1914             return null;

  1915         }

  1916         StringBuilder cnt = new StringBuilder();

  1917         final String mn = findMethodName(m, cnt);

  1918         append("m = ").append(destObject).append(".").append(mn);

  1919         append(" = function(");

  1920         String space = "";

  1921         int index = 0;

  1922         StringBuilder toValue = new StringBuilder();

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

  1924             append(space);

  1925             space = outputArg(this, p.args, index);

  1926             if (p.html4j && space.length() > 0) {

  1927                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1928                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1929                     append(p.args[index]).append(");");

  1930             }

  1931             index++;

  1932         }

  1933         append(") {").append("\n");

  1934         append(toValue.toString());

  1935         if (p.javacall) {

  1936             int lastSlash = jc.getClassName().lastIndexOf('/');

  1937             final String pkg = jc.getClassName().substring(0, lastSlash);

  1938             append(mangleCallbacks(pkg, p.body));

  1939             requireReference(pkg + "/$JsCallbacks$");

  1940         } else {

  1941             append(p.body);

  1942         }

  1943         append("\n}\n");

  1944         return mn;

  1945     }

  1947     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1948         StringBuilder sb = new StringBuilder();

  1949         int pos = 0;

  1950         for (;;) {

  1951             int next = body.indexOf(".@", pos);

  1952             if (next == -1) {

  1953                 sb.append(body.substring(pos));

  1954                 body = sb.toString();

  1955                 break;

  1956             }

  1957             int ident = next;

  1958             while (ident > 0) {

  1959                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1960                     ident++;

  1961                     break;

  1962                 }

  1963             }

  1964             String refId = body.substring(ident, next);

  1966             sb.append(body.substring(pos, ident));

  1968             int sigBeg = body.indexOf('(', next);

  1969             int sigEnd = body.indexOf(')', sigBeg);

  1970             int colon4 = body.indexOf("::", next);

  1971             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1972                 throw new IllegalStateException("Malformed body " + body);

  1973             }

  1974             String fqn = body.substring(next + 2, colon4);

  1975             String method = body.substring(colon4 + 2, sigBeg);

  1976             String params = body.substring(sigBeg, sigEnd + 1);

  1978             int paramBeg = body.indexOf('(', sigEnd + 1);

  1980             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1981             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1982             sb.append("(").append(refId);

  1983             if (body.charAt(paramBeg + 1) != ')') {

  1984                 sb.append(",");

  1985             }

  1986             pos = paramBeg + 1;

  1987         }

  1988         sb = null;

  1989         pos = 0;

  1990         for (;;) {

  1991             int next = body.indexOf("@", pos);

  1992             if (next == -1) {

  1993                 if (sb == null) {

  1994                     return body;

  1995                 }

  1996                 sb.append(body.substring(pos));

  1997                 return sb;

  1998             }

  1999             if (sb == null) {

  2000                 sb = new StringBuilder();

  2001             }

  2003             sb.append(body.substring(pos, next));

  2005             int sigBeg = body.indexOf('(', next);

  2006             int sigEnd = body.indexOf(')', sigBeg);

  2007             int colon4 = body.indexOf("::", next);

  2008             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2009                 throw new IllegalStateException("Malformed body " + body);

  2010             }

  2011             String fqn = body.substring(next + 1, colon4);

  2012             String method = body.substring(colon4 + 2, sigBeg);

  2013             String params = body.substring(sigBeg, sigEnd + 1);

  2015             int paramBeg = body.indexOf('(', sigEnd + 1);

  2017             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  2018             sb.append(mangleJsCallbacks(fqn, method, params, true));

  2019             sb.append("(");

  2020             pos = paramBeg + 1;

  2021         }

  2022     }

  2024     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  2025         if (params.startsWith("(")) {

  2026             params = params.substring(1);

  2027         }

  2028         if (params.endsWith(")")) {

  2029             params = params.substring(0, params.length() - 1);

  2030         }

  2031         StringBuilder sb = new StringBuilder();

  2032         final String fqnu = fqn.replace('.', '_');

  2033         final String rfqn = mangleClassName(fqnu);

  2034         final String rm = mangleMethodName(method);

  2035         final String srp;

  2036         {

  2037             StringBuilder pb = new StringBuilder();

  2038             int len = params.length();

  2039             int indx = 0;

  2040             while (indx < len) {

  2041                 char ch = params.charAt(indx);

  2042                 if (ch == '[' || ch == 'L') {

  2043                     int column = params.indexOf(';', indx) + 1;

  2044                     if (column > indx) {

  2045                         String real = params.substring(indx, column);

  2046                         if ("Ljava/lang/String;".equals(real)) {

  2047                             pb.append("Ljava/lang/String;");

  2048                             indx = column;

  2049                             continue;

  2050                         }

  2051                     }

  2052                     pb.append("Ljava/lang/Object;");

  2053                     indx = column;

  2054                 } else {

  2055                     pb.append(ch);

  2056                     indx++;

  2057                 }

  2058             }

  2059             srp = mangleSig(pb.toString());

  2060         }

  2061         final String rp = mangleSig(params);

  2062         final String mrp = mangleMethodName(rp);

  2063         sb.append(rfqn).append("$").append(rm).

  2064             append('$').append(mrp).append("__Ljava_lang_Object_2");

  2065         if (!isStatic) {

  2066             sb.append('L').append(fqnu).append("_2");

  2067         }

  2068         sb.append(srp);

  2069         return sb.toString();

  2070     }

  2072     private static String className(ClassData jc) {

  2073         //return jc.getName().getInternalName().replace('/', '_');

  2074         return mangleClassName(jc.getClassName());

  2075     }

  2077     private static String[] findAnnotation(

  2078         byte[] arr, ClassData cd, final String className,

  2079         final String... attrNames

  2080     ) throws IOException {

  2081         if (arr == null) {

  2082             return null;

  2083         }

  2084         final String[] values = new String[attrNames.length];

  2085         final boolean[] found = { false };

  2086         final String jvmType = "L" + className.replace('.', '/') + ";";

  2087         AnnotationParser ap = new AnnotationParser(false, true) {

  2088             @Override

  2089             protected void visitAttr(String type, String attr, String at, String value) {

  2090                 if (type.equals(jvmType)) {

  2091                     found[0] = true;

  2092                     for (int i = 0; i < attrNames.length; i++) {

  2093                         if (attrNames[i].equals(attr)) {

  2094                             values[i] = value;

  2095                         }

  2096                     }

  2097                 }

  2098             }

  2100         };

  2101         ap.parse(arr, cd);

  2102         return found[0] ? values : null;

  2103     }

  2105     private CharSequence initField(FieldData v) {

  2106         final String is = v.getInternalSig();

  2107         if (is.length() == 1) {

  2108             switch (is.charAt(0)) {

  2109                 case 'S':

  2110                 case 'J':

  2111                 case 'B':

  2112                 case 'Z':

  2113                 case 'C':

  2114                 case 'I': return " = 0;";

  2115                 case 'F':

  2116                 case 'D': return " = 0.0;";

  2117                 default:

  2118                     throw new IllegalStateException(is);

  2119             }

  2120         }

  2121         return " = null;";

  2122     }

  2124     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2125         AnnotationParser ap = new AnnotationParser(true, false) {

  2126             int[] cnt = new int[32];

  2127             int depth;

  2129             @Override

  2130             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2131                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2132                 requireReference(slashType);

  2134                 if (cnt[depth]++ > 0) {

  2135                     append(",");

  2136                 }

  2137                 if (top) {

  2138                     append('"').append(attrType).append("\" : ");

  2139                 }

  2140                 append("{\n");

  2141                 cnt[++depth] = 0;

  2142             }

  2144             @Override

  2145             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2146                 append("\n}\n");

  2147                 depth--;

  2148             }

  2150             @Override

  2151             protected void visitValueStart(String attrName, char type) throws IOException {

  2152                 if (cnt[depth]++ > 0) {

  2153                     append(",\n");

  2154                 }

  2155                 cnt[++depth] = 0;

  2156                 if (attrName != null) {

  2157                     append('"').append(attrName).append("\" : ");

  2158                 }

  2159                 if (type == '[') {

  2160                     append("[");

  2161                 }

  2162             }

  2164             @Override

  2165             protected void visitValueEnd(String attrName, char type) throws IOException {

  2166                 if (type == '[') {

  2167                     append("]");

  2168                 }

  2169                 depth--;

  2170             }

  2172             @Override

  2173             protected void visitAttr(String type, String attr, String attrType, String value)

  2174             throws IOException {

  2175                 if (attr == null && value == null) {

  2176                     return;

  2177                 }

  2178                 append(value);

  2179             }

  2181             @Override

  2182             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2183             throws IOException {

  2184                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2185                 requireReference(slashType);

  2187                 final String cn = mangleClassName(slashType);

  2188                 append(accessClassFalse(cn))

  2189                    .append("['valueOf__L").

  2190                     append(cn).

  2191                     append("_2Ljava_lang_String_2']('").

  2192                     append(value).

  2193                     append("')");

  2194             }

  2195         };

  2196         ap.parse(data, cd);

  2197     }

  2199     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2200         final String name = args[indx];

  2201         if (name == null) {

  2202             return "";

  2203         }

  2204         if (name.contains(",")) {

  2205             throw new IOException("Wrong parameter with ',': " + name);

  2206         }

  2207         out.append(name);

  2208         return ",";

  2209     }

  2211     final void emitNoFlush(

  2212         StackMapper sm,

  2213         final String format, final CharSequence... params

  2214     ) throws IOException {

  2215         emitImpl(this, format, params);

  2216     }

  2217     static final void emit(

  2218         StackMapper sm,

  2219         final Appendable out,

  2220         final String format, final CharSequence... params

  2221     ) throws IOException {

  2222         sm.flush(out);

  2223         emitImpl(out, format, params);

  2224     }

  2225     static void emitImpl(final Appendable out,

  2226                              final String format,

  2227                              final CharSequence... params) throws IOException {

  2228         final int length = format.length();

  2230         int processed = 0;

  2231         int paramOffset = format.indexOf('@');

  2232         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2233             final char paramChar = format.charAt(paramOffset + 1);

  2234             if ((paramChar >= '1') && (paramChar <= '9')) {

  2235                 final int paramIndex = paramChar - '0' - 1;

  2237                 out.append(format, processed, paramOffset);

  2238                 out.append(params[paramIndex]);

  2240                 ++paramOffset;

  2241                 processed = paramOffset + 1;

  2242             }

  2244             paramOffset = format.indexOf('@', paramOffset + 1);

  2245         }

  2247         out.append(format, processed, length);

  2248     }

  2250     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2251         append("} catch (e) {\n");

  2252         int finallyPC = -1;

  2253         for (TrapData e : traps) {

  2254             if (e == null) {

  2255                 break;

  2256             }

  2257             if (e.catch_cpx != 0) { //not finally

  2258                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2259                 addReference(classInternalName);

  2260                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2261                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2262                 append("var stA0 = e;");

  2263                 goTo(this, current, e.handler_pc, topMostLabel);

  2264                 append("}\n");

  2265             } else {

  2266                 finallyPC = e.handler_pc;

  2267             }

  2268         }

  2269         if (finallyPC == -1) {

  2270             append("throw e;");

  2271         } else {

  2272             append("var stA0 = e;");

  2273             goTo(this, current, finallyPC, topMostLabel);

  2274         }

  2275         append("\n}");

  2276     }

  2278     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2279         if (to < current) {

  2280             if (canBack < to) {

  2281                 out.append("{ gt = 0; continue X_" + to + "; }");

  2282             } else {

  2283                 out.append("{ gt = " + to + "; continue X_0; }");

  2284             }

  2285         } else {

  2286             out.append("{ gt = " + to + "; break IF; }");

  2287         }

  2288     }

  2290     private static void emitIf(

  2291         StackMapper sm,

  2292         Appendable out, String pattern,

  2293         CharSequence param,

  2294         int current, int to, int canBack

  2295     ) throws IOException {

  2296         sm.flush(out);

  2297         emitImpl(out, pattern, param);

  2298         goTo(out, current, to, canBack);

  2299     }

  2301     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2302         String jvmType;

  2303         switch (atype) {

  2304             case 4: jvmType = "[Z"; break;

  2305             case 5: jvmType = "[C"; break;

  2306             case 6: jvmType = "[F"; break;

  2307             case 7: jvmType = "[D"; break;

  2308             case 8: jvmType = "[B"; break;

  2309             case 9: jvmType = "[S"; break;

  2310             case 10: jvmType = "[I"; break;

  2311             case 11: jvmType = "[J"; break;

  2312             default: throw new IllegalStateException("Array type: " + atype);

  2313         }

  2314         emit(smapper, this,

  2315             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2316              smapper.popI(), smapper.pushA(), jvmType);

  2317     }

  2319     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2320         String typeName = jc.getClassName(type);

  2321         String ref = "null";

  2322         if (typeName.startsWith("[")) {

  2323             typeName = "'[" + typeName + "'";

  2324         } else {

  2325             ref = "vm." + mangleClassName(typeName);

  2326             typeName = "'[L" + typeName + ";'";

  2327         }

  2328         emit(smapper, this,

  2329             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2330              smapper.popI(), smapper.pushA(), typeName, ref);

  2331     }

  2333     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2334         String typeName = jc.getClassName(type);

  2335         int dim = readUByte(byteCodes, ++i);

  2336         StringBuilder dims = new StringBuilder();

  2337         dims.append('[');

  2338         for (int d = 0; d < dim; d++) {

  2339             if (d != 0) {

  2340                 dims.insert(1, ",");

  2341             }

  2342             dims.insert(1, smapper.popI());

  2343         }

  2344         dims.append(']');

  2345         String fn = "null";

  2346         if (typeName.charAt(dim) == 'L') {

  2347             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2348         }

  2349         emit(smapper, this,

  2350             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2351              dims.toString(), smapper.pushA(), typeName, fn

  2352         );

  2353         return i;

  2354     }

  2356     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2357         int table = i / 4 * 4 + 4;

  2358         int dflt = i + readInt4(byteCodes, table);

  2359         table += 4;

  2360         int low = readInt4(byteCodes, table);

  2361         table += 4;

  2362         int high = readInt4(byteCodes, table);

  2363         table += 4;

  2364         final CharSequence swVar = smapper.popValue();

  2365         smapper.flush(this);

  2366         append("switch (").append(swVar).append(") {\n");

  2367         while (low <= high) {

  2368             int offset = i + readInt4(byteCodes, table);

  2369             table += 4;

  2370             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2371             low++;

  2372         }

  2373         append("  default: ");

  2374         goTo(this, i, dflt, topMostLabel);

  2375         append("\n}");

  2376         i = table - 1;

  2377         return i;

  2378     }

  2380     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2381         int table = i / 4 * 4 + 4;

  2382         int dflt = i + readInt4(byteCodes, table);

  2383         table += 4;

  2384         int n = readInt4(byteCodes, table);

  2385         table += 4;

  2386         final CharSequence swVar = smapper.popValue();

  2387         smapper.flush(this);

  2388         append("switch (").append(swVar).append(") {\n");

  2389         while (n-- > 0) {

  2390             int cnstnt = readInt4(byteCodes, table);

  2391             table += 4;

  2392             int offset = i + readInt4(byteCodes, table);

  2393             table += 4;

  2394             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2395         }

  2396         append("  default: ");

  2397         goTo(this, i, dflt, topMostLabel);

  2398         append("\n}");

  2399         i = table - 1;

  2400         return i;

  2401     }

  2403     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2404         String type = jc.getClassName(indx);

  2405         if (!type.startsWith("[")) {

  2406             emit(smapper, this,

  2407                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2408                  smapper.popA(), smapper.pushI(),

  2409                  type.replace('/', '_'));

  2410         } else {

  2411             int cnt = 0;

  2412             while (type.charAt(cnt) == '[') {

  2413                 cnt++;

  2414             }

  2415             if (type.charAt(cnt) == 'L') {

  2416                 String component = type.substring(cnt + 1, type.length() - 1);

  2417                 requireReference(component);

  2418                 type = "vm." + mangleClassName(component);

  2419                 emit(smapper, this,

  2420                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2421                     smapper.popA(), smapper.pushI(),

  2422                     type, "" + cnt

  2423                 );

  2424             } else {

  2425                 emit(smapper, this,

  2426                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2427                     smapper.popA(), smapper.pushI(), type

  2428                 );

  2429             }

  2430         }

  2431     }

  2433     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2434         String type = jc.getClassName(indx);

  2435         if (!type.startsWith("[")) {

  2436             emitNoFlush(smapper,

  2437                  "if (@1 !== null && !@1['$instOf_@2']) vm.java_lang_Class(false).castEx();",

  2438                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2439         } else {

  2440             int cnt = 0;

  2441             while (type.charAt(cnt) == '[') {

  2442                 cnt++;

  2443             }

  2444             if (type.charAt(cnt) == 'L') {

  2445                 String component = type.substring(cnt + 1, type.length() - 1);

  2446                 requireReference(component);

  2447                 type = "vm." + mangleClassName(component);

  2448                 emitNoFlush(smapper,

  2449                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) vm.java_lang_Class(false).castEx();",

  2450                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2451                 );

  2452             } else {

  2453                 emitNoFlush(smapper,

  2454                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) vm.java_lang_Class(false).castEx();",

  2455                      smapper.getT(0, VarType.REFERENCE, false), type

  2456                 );

  2457             }

  2458         }

  2459     }

  2461     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2462         for (int j = prev; j <= i; j++) {

  2463             append(" ");

  2464             final int cc = readUByte(byteCodes, j);

  2465             append(Integer.toString(cc));

  2466         }

  2467     }

  2469     @JavaScriptBody(args = "msg", body = "")

  2470     private static void println(String msg) {

  2471         System.err.println(msg);

  2472     }

  2473 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Wed, 15 Apr 2015 12:29:45 +0200
changeset 1823	999cf0169156
parent 1811	ff2a253900ed
child 1840	9d011ab3c192
permissions	-rw-r--r--