hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@ea9fd59c8b62

     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 org.apidesign.vm4brwsr.Bck2Brwsr.Flow;

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

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

    27  *

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

    29  */

    30 abstract class ByteCodeToJavaScript implements Appendable {

    31     private ClassData jc;

    32     private final Appendable out;

    33     private final StringArray classRefs = new StringArray();

    34     private boolean outChanged;

    35     private boolean callbacks;

    37     protected ByteCodeToJavaScript(Appendable out) {

    38         this.out = out;

    39     }

    41     @Override

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

    43         out.append(csq);

    44         outChanged = true;

    45         return this;

    46     }

    48     @Override

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

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

    51         outChanged = true;

    52         return this;

    53     }

    55     @Override

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

    57         out.append(c);

    58         outChanged = true;

    59         return this;

    60     }

    62     /* Collects additional required resources.

    63      *

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

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

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

    67      */

    68     protected abstract boolean requireReference(String internalClassName);

    70     /*

    71      * @param resourcePath name of resources to read

    72      */

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

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

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

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

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

    80      *

    81      * @param className suggested name of the class

    82      */

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

    84         return className + " = ";

    85     }

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

    87         return classOperation;

    88     }

    90     final String accessClassFalse(String classOperation) {

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

    92             return "c";

    93         }

    94         classRefs.addIfMissing(classOperation);

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

    96     }

    98     protected String accessField(String object, String mangledName,

    99                                  String[] fieldInfoName) throws IOException {

   100         return object + "." + mangledName;

   101     }

   103     protected String accessStaticMethod(

   104                              String object,

   105                              String mangledName,

   106                              String[] fieldInfoName) throws IOException {

   107         return object + "." + mangledName;

   108     }

   110     protected String accessVirtualMethod(

   111             String object,

   112             String mangledName,

   113             String[] fieldInfoName,

   114             int params

   115     ) throws IOException {

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

   117     }

   119     protected void declaredClass(ClassData classData, String mangledName)

   120             throws IOException {

   121     }

   123     protected void declaredField(FieldData fieldData,

   124                                  String destObject,

   125                                  String mangledName) throws IOException {

   126     }

   128     protected void declaredMethod(MethodData methodData,

   129                                   String destObject,

   130                                   String mangledName) throws IOException {

   131     }

   133     /** Prints out a debug message.

   134      *

   135      * @param msg the message

   136      * @return true if the message has been printed

   137      * @throws IOException

   138      */

   139     boolean debug(String msg) throws IOException {

   140         append(msg);

   141         return true;

   142     }

   144     /**

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

   146      *

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

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

   149      *

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

   151      */

   153     public String compile(InputStream classFile) throws IOException {

   154         return compile(new ClassData(classFile));

   155     }

   157     protected String compile(ClassData classData) throws IOException {

   158         this.jc = classData;

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

   160         try {

   161             return compileImpl(cn);

   162         } catch (IOException ex) {

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

   164         }

   165     }

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

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

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

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

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

   172             );

   173         }

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

   175         {

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

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

   178                 "resource", "processByteCode"

   179             );

   180             if (arr != null) {

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

   182                     requireScript(arr[0]);

   183                 }

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

   185                     return null;

   186                 }

   187             }

   188         }

   189         final String jsResource;

   190         {

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

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

   193                 "value"

   194             );

   195             if (arr != null) {

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

   197                     jsResource = arr[0];

   198                 } else {

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

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

   201                 }

   202             } else {

   203                 jsResource = null;

   204             }

   205         }

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

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

   208             "container", "prototype"

   209         );

   210         StringArray toInitilize = new StringArray();

   211         final String className = className(jc);

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

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

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

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

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

   217         if (proto == null) {

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

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

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

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

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

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

   224         } else {

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

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

   227                 proto[0] = "p";

   228             }

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

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

   231         }

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

   233             if (v.isStatic()) {

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

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

   236                         continue;

   237                     }

   238                 }

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

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

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

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

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

   244             } else {

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

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

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

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

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

   250                     .append("; };");

   251             }

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

   254         }

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

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

   257             if (javaScriptOnly(onlyArr)) continue;

   258             String destObject;

   259             String mn;

   260             append("\n    ");

   261             if (m.isStatic()) {

   262                 destObject = "c";

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

   264             } else {

   265                 if (m.isConstructor()) {

   266                     destObject = "CLS";

   267                     mn = generateInstanceMethod(destObject, m);

   268                 } else {

   269                     destObject = "c";

   270                     mn = generateInstanceMethod(destObject, m);

   271                 }

   272             }

   273             declaredMethod(m, destObject, mn);

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

   275             if (runAnno != null) {

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

   277                 generateAnno(jc, runAnno);

   278                 append("\n    };");

   279             }

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

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

   282         }

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

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

   285         String instOfName = "$instOf_" + className;

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

   287         if (jc.isInterface()) {

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

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

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

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

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

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

   294                 }

   295             }

   296         }

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

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

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

   300             requireReference(superInterface);

   301         }

   302         append("\n    }");

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

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

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

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

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

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

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

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

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

   312         {

   313             boolean first = true;

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

   315                 if (!first) {

   316                     append(",");

   317                 }

   318                 requireReference(intrfc);

   319                 String mangledIface = mangleClassName(intrfc);

   320                 append("\n        ");

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

   322                 first = false;

   323             }

   324         }

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

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

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

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

   329         if (classAnno != null) {

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

   331             generateAnno(jc, classAnno);

   332             append("\n    };");

   333         }

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

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

   336         }

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

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

   339         }

   340         classRefs.clear();

   342         if (jsResource != null) {

   343             requireResource(jsResource);

   344         }

   346         append("\n  }");

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

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

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

   350         append("\n    }");

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

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

   353             if (javaScriptOnly(onlyArr)) continue;

   354             if (!v.isStatic()) {

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

   356                     append(className).append('_').

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

   358             }

   359         }

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

   361         append("\n  }");

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

   363         append("\n};");

   365         declaredClass(jc, className);

   367 //        StringBuilder sb = new StringBuilder();

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

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

   370 //        }

   371         return "";

   372     }

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

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

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

   377             "name", "value"

   378         );

   379         if (only != null) {

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

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

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

   383             }

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

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

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

   387             }

   388             return true;

   389         }

   390         return false;

   391     }

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

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

   394         if (jsb != null) {

   395             return jsb;

   396         }

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

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

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

   400             if (defineProp) {

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

   402             } else {

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

   404             }

   405         }

   406         return mn;

   407     }

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

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

   411         if (jsb != null) {

   412             return jsb;

   413         }

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

   415         generateMethod(destObject, mn, m);

   416         return mn;

   417     }

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

   420             throws IOException {

   421         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   422         TrapDataIterator trap = m.getTrapDataIterator();

   423         final LocalsMapper lmapper =

   424                 new LocalsMapper(stackMapIterator.getArguments());

   426         boolean defineProp =

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

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

   430         if (defineProp) {

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

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

   433         } else {

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

   435         }

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

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

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

   440         if (byteCodes == null) {

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

   442                this

   443                .append(jc.getClassName()).append('.')

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

   445             }

   446             if (defineProp) {

   447                 append("}});");

   448             } else {

   449                 append("};");

   450             }

   451             return defineProp;

   452         }

   453         Flow flow = checkFlow(m);

   455         final StackMapper smapper = new StackMapper();

   457         if (!m.isStatic()) {

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

   459         }

   461         int lastStackFrame;

   462         TrapData[] previousTrap = null;

   463         boolean wide = false;

   464         boolean didBranches;

   465         if (stackMapIterator.isEmpty()) {

   466             didBranches = false;

   467             lastStackFrame = 0;

   468         } else {

   469             didBranches = true;

   470             lastStackFrame = -1;

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

   472         }

   474         int openBraces = 0;

   475         int topMostLabel = 0;

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

   477             int prev = i;

   478             outChanged = false;

   479             stackMapIterator.advanceTo(i);

   480             boolean changeInCatch = trap.advanceTo(i);

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

   482                 if (previousTrap != null) {

   483                     generateCatch(previousTrap, flow, i, topMostLabel);

   484                     previousTrap = null;

   485                 }

   486             }

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

   488                 smapper.flush(this);

   489                 if (i != 0) {

   490                     append("    }\n");

   491                 }

   492                 if (openBraces > 64) {

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

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

   495                     }

   496                     openBraces = 1;

   497                     topMostLabel = i;

   498                 }

   500                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   504                 openBraces++;

   505                 changeInCatch = true;

   506             } else {

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

   508             }

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

   510                 append("try {");

   511                 previousTrap = trap.current();

   512             }

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

   514             switch (c) {

   515                 case opc_aload_0:

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

   517                     break;

   518                 case opc_iload_0:

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

   520                     break;

   521                 case opc_lload_0:

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

   523                     break;

   524                 case opc_fload_0:

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

   526                     break;

   527                 case opc_dload_0:

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

   529                     break;

   530                 case opc_aload_1:

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

   532                     break;

   533                 case opc_iload_1:

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

   535                     break;

   536                 case opc_lload_1:

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

   538                     break;

   539                 case opc_fload_1:

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

   541                     break;

   542                 case opc_dload_1:

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

   544                     break;

   545                 case opc_aload_2:

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

   547                     break;

   548                 case opc_iload_2:

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

   550                     break;

   551                 case opc_lload_2:

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

   553                     break;

   554                 case opc_fload_2:

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

   556                     break;

   557                 case opc_dload_2:

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

   559                     break;

   560                 case opc_aload_3:

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

   562                     break;

   563                 case opc_iload_3:

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

   565                     break;

   566                 case opc_lload_3:

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

   568                     break;

   569                 case opc_fload_3:

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

   571                     break;

   572                 case opc_dload_3:

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

   574                     break;

   575                 case opc_iload: {

   576                     ++i;

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

   578                                           : readUByte(byteCodes, i);

   579                     wide = false;

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

   581                     break;

   582                 }

   583                 case opc_lload: {

   584                     ++i;

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

   586                                           : readUByte(byteCodes, i);

   587                     wide = false;

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

   589                     break;

   590                 }

   591                 case opc_fload: {

   592                     ++i;

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

   594                                           : readUByte(byteCodes, i);

   595                     wide = false;

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

   597                     break;

   598                 }

   599                 case opc_dload: {

   600                     ++i;

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

   602                                           : readUByte(byteCodes, i);

   603                     wide = false;

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

   605                     break;

   606                 }

   607                 case opc_aload: {

   608                     ++i;

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

   610                                           : readUByte(byteCodes, i);

   611                     wide = false;

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

   613                     break;

   614                 }

   615                 case opc_istore: {

   616                     ++i;

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

   618                                           : readUByte(byteCodes, i);

   619                     wide = false;

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

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

   622                     break;

   623                 }

   624                 case opc_lstore: {

   625                     ++i;

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

   627                                           : readUByte(byteCodes, i);

   628                     wide = false;

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

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

   631                     break;

   632                 }

   633                 case opc_fstore: {

   634                     ++i;

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

   636                                           : readUByte(byteCodes, i);

   637                     wide = false;

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

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

   640                     break;

   641                 }

   642                 case opc_dstore: {

   643                     ++i;

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

   645                                           : readUByte(byteCodes, i);

   646                     wide = false;

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

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

   649                     break;

   650                 }

   651                 case opc_astore: {

   652                     ++i;

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

   654                                           : readUByte(byteCodes, i);

   655                     wide = false;

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

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

   658                     break;

   659                 }

   660                 case opc_astore_0:

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

   662                     break;

   663                 case opc_istore_0:

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

   665                     break;

   666                 case opc_lstore_0:

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

   668                     break;

   669                 case opc_fstore_0:

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

   671                     break;

   672                 case opc_dstore_0:

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

   674                     break;

   675                 case opc_astore_1:

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

   677                     break;

   678                 case opc_istore_1:

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

   680                     break;

   681                 case opc_lstore_1:

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

   683                     break;

   684                 case opc_fstore_1:

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

   686                     break;

   687                 case opc_dstore_1:

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

   689                     break;

   690                 case opc_astore_2:

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

   692                     break;

   693                 case opc_istore_2:

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

   695                     break;

   696                 case opc_lstore_2:

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

   698                     break;

   699                 case opc_fstore_2:

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

   701                     break;

   702                 case opc_dstore_2:

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

   704                     break;

   705                 case opc_astore_3:

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

   707                     break;

   708                 case opc_istore_3:

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

   710                     break;

   711                 case opc_lstore_3:

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

   713                     break;

   714                 case opc_fstore_3:

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

   716                     break;

   717                 case opc_dstore_3:

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

   719                     break;

   720                 case opc_iadd:

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

   722                     break;

   723                 case opc_ladd:

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

   725                     break;

   726                 case opc_fadd:

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

   728                     break;

   729                 case opc_dadd:

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

   731                     break;

   732                 case opc_isub:

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

   734                     break;

   735                 case opc_lsub:

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

   737                     break;

   738                 case opc_fsub:

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

   740                     break;

   741                 case opc_dsub:

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

   743                     break;

   744                 case opc_imul:

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

   746                     break;

   747                 case opc_lmul:

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

   749                     break;

   750                 case opc_fmul:

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

   752                     break;

   753                 case opc_dmul:

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

   755                     break;

   756                 case opc_idiv:

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

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

   759                     break;

   760                 case opc_ldiv:

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

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

   763                     break;

   764                 case opc_fdiv:

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

   766                     break;

   767                 case opc_ddiv:

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

   769                     break;

   770                 case opc_irem:

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

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

   773                     break;

   774                 case opc_lrem:

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

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

   777                     break;

   778                 case opc_frem:

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

   780                     break;

   781                 case opc_drem:

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

   783                     break;

   784                 case opc_iand:

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

   786                     break;

   787                 case opc_land:

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

   789                     break;

   790                 case opc_ior:

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

   792                     break;

   793                 case opc_lor:

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

   795                     break;

   796                 case opc_ixor:

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

   798                     break;

   799                 case opc_lxor:

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

   801                     break;

   802                 case opc_ineg:

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

   804                     break;

   805                 case opc_lneg:

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

   807                     break;

   808                 case opc_fneg:

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

   810                     break;

   811                 case opc_dneg:

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

   813                     break;

   814                 case opc_ishl:

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

   816                     break;

   817                 case opc_lshl:

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

   819                     break;

   820                 case opc_ishr:

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

   822                     break;

   823                 case opc_lshr:

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

   825                     break;

   826                 case opc_iushr:

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

   828                     break;

   829                 case opc_lushr:

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

   831                     break;

   832                 case opc_iinc: {

   833                     ++i;

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

   835                                              : readUByte(byteCodes, i);

   836                     ++i;

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

   838                                             : byteCodes[i];

   839                     wide = false;

   840                     if (incrBy == 1) {

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

   842                     } else {

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

   844                              lmapper.getI(varIndx),

   845                              Integer.toString(incrBy));

   846                     }

   847                     break;

   848                 }

   849                 case opc_return:

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

   851                     break;

   852                 case opc_ireturn:

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

   854                     break;

   855                 case opc_lreturn:

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

   857                     break;

   858                 case opc_freturn:

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

   860                     break;

   861                 case opc_dreturn:

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

   863                     break;

   864                 case opc_areturn:

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

   866                     break;

   867                 case opc_i2l:

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

   869                     break;

   870                 case opc_i2f:

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

   872                     break;

   873                 case opc_i2d:

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

   875                     break;

   876                 case opc_l2i:

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

   878                     break;

   879                     // max int check?

   880                 case opc_l2f:

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

   882                     break;

   883                 case opc_l2d:

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

   885                     break;

   886                 case opc_f2d:

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

   888                          smapper.getF(0));

   889                     break;

   890                 case opc_d2f:

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

   892                          smapper.getD(0));

   893                     break;

   894                 case opc_f2i:

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

   896                          smapper.getF(0));

   897                     break;

   898                 case opc_f2l:

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

   900                          smapper.getF(0));

   901                     break;

   902                 case opc_d2i:

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

   904                          smapper.getD(0));

   905                     break;

   906                 case opc_d2l:

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

   908                     break;

   909                 case opc_i2b:

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

   911                     break;

   912                 case opc_i2c:

   913                 case opc_i2s:

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

   915                     break;

   916                 case opc_aconst_null:

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

   918                     break;

   919                 case opc_iconst_m1:

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

   921                     break;

   922                 case opc_iconst_0:

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

   924                     break;

   925                 case opc_dconst_0:

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

   927                     break;

   928                 case opc_lconst_0:

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

   930                     break;

   931                 case opc_fconst_0:

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

   933                     break;

   934                 case opc_iconst_1:

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

   936                     break;

   937                 case opc_lconst_1:

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

   939                     break;

   940                 case opc_fconst_1:

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

   942                     break;

   943                 case opc_dconst_1:

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

   945                     break;

   946                 case opc_iconst_2:

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

   948                     break;

   949                 case opc_fconst_2:

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

   951                     break;

   952                 case opc_iconst_3:

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

   954                     break;

   955                 case opc_iconst_4:

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

   957                     break;

   958                 case opc_iconst_5:

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

   960                     break;

   961                 case opc_ldc: {

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

   963                     String v = encodeConstant(indx);

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

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

   966                     break;

   967                 }

   968                 case opc_ldc_w:

   969                 case opc_ldc2_w: {

   970                     int indx = readUShortArg(byteCodes, i);

   971                     i += 2;

   972                     String v = encodeConstant(indx);

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

   974                     if (type == VarType.LONG) {

   975                         final Long lv = new Long(v);

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

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

   978                         if (hi == 0) {

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

   980                         } else {

   981                             smapper.assign(this, VarType.LONG,

   982                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   983                                     Integer.toHexString(low) + ")"

   984                             );

   985                         }

   986                     } else {

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

   988                     }

   989                     break;

   990                 }

   991                 case opc_lcmp:

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

   993                     break;

   994                 case opc_fcmpl:

   995                 case opc_fcmpg:

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

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

   998                     break;

   999                 case opc_dcmpl:

  1000                 case opc_dcmpg:

  1001                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1002                          smapper.popD(), smapper.popD(), smapper.pushI());

  1003                     break;

  1004                 case opc_if_acmpeq:

  1005                     i = generateIf(smapper, flow, byteCodes, i, smapper.popA(), smapper.popA(),

  1006                                    "===", topMostLabel);

  1007                     break;

  1008                 case opc_if_acmpne:

  1009                     i = generateIf(smapper, flow, byteCodes, i, smapper.popA(), smapper.popA(),

  1010                                    "!==", topMostLabel);

  1011                     break;

  1012                 case opc_if_icmpeq:

  1013                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1014                                    "==", topMostLabel);

  1015                     break;

  1016                 case opc_ifeq: {

  1017                     int indx = i + readShortArg(byteCodes, i);

  1018                     emitIf(smapper, flow, this, "if ((@1) == 0) ",

  1019                          smapper.popI(), i, indx, topMostLabel);

  1020                     i += 2;

  1021                     break;

  1022                 }

  1023                 case opc_ifne: {

  1024                     int indx = i + readShortArg(byteCodes, i);

  1025                     emitIf(smapper, flow, this, "if ((@1) != 0) ",

  1026                          smapper.popI(), i, indx, topMostLabel);

  1027                     i += 2;

  1028                     break;

  1029                 }

  1030                 case opc_iflt: {

  1031                     int indx = i + readShortArg(byteCodes, i);

  1032                     emitIf(smapper, flow, this, "if ((@1) < 0) ",

  1033                          smapper.popI(), i, indx, topMostLabel);

  1034                     i += 2;

  1035                     break;

  1036                 }

  1037                 case opc_ifle: {

  1038                     int indx = i + readShortArg(byteCodes, i);

  1039                     emitIf(smapper, flow, this, "if ((@1) <= 0) ",

  1040                          smapper.popI(), i, indx, topMostLabel);

  1041                     i += 2;

  1042                     break;

  1043                 }

  1044                 case opc_ifgt: {

  1045                     int indx = i + readShortArg(byteCodes, i);

  1046                     emitIf(smapper, flow, this, "if ((@1) > 0) ",

  1047                          smapper.popI(), i, indx, topMostLabel);

  1048                     i += 2;

  1049                     break;

  1050                 }

  1051                 case opc_ifge: {

  1052                     int indx = i + readShortArg(byteCodes, i);

  1053                     emitIf(smapper, flow, this, "if ((@1) >= 0) ",

  1054                          smapper.popI(), i, indx, topMostLabel);

  1055                     i += 2;

  1056                     break;

  1057                 }

  1058                 case opc_ifnonnull: {

  1059                     int indx = i + readShortArg(byteCodes, i);

  1060                     emitIf(smapper, flow, this, "if ((@1) !== null) ",

  1061                          smapper.popA(), i, indx, topMostLabel);

  1062                     i += 2;

  1063                     break;

  1064                 }

  1065                 case opc_ifnull: {

  1066                     int indx = i + readShortArg(byteCodes, i);

  1067                     emitIf(smapper, flow, this, "if ((@1) === null) ",

  1068                          smapper.popA(), i, indx, topMostLabel);

  1069                     i += 2;

  1070                     break;

  1071                 }

  1072                 case opc_if_icmpne:

  1073                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1074                                    "!=", topMostLabel);

  1075                     break;

  1076                 case opc_if_icmplt:

  1077                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1078                                    "<", topMostLabel);

  1079                     break;

  1080                 case opc_if_icmple:

  1081                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1082                                    "<=", topMostLabel);

  1083                     break;

  1084                 case opc_if_icmpgt:

  1085                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1086                                    ">", topMostLabel);

  1087                     break;

  1088                 case opc_if_icmpge:

  1089                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1090                                    ">=", topMostLabel);

  1091                     break;

  1092                 case opc_goto: {

  1093                     smapper.flush(this);

  1094                     int indx = i + readShortArg(byteCodes, i);

  1095                     goTo(this, flow, i, indx, topMostLabel);

  1096                     i += 2;

  1097                     break;

  1098                 }

  1099                 case opc_lookupswitch: {

  1100                     i = generateLookupSwitch(i, byteCodes, smapper, flow, topMostLabel);

  1101                     break;

  1102                 }

  1103                 case opc_tableswitch: {

  1104                     i = generateTableSwitch(i, byteCodes, smapper, flow, topMostLabel);

  1105                     break;

  1106                 }

  1107                 case opc_invokeinterface: {

  1108                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1109                     break;

  1110                 }

  1111                 case opc_invokevirtual:

  1112                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1113                     break;

  1114                 case opc_invokespecial:

  1115                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1116                     break;

  1117                 case opc_invokestatic:

  1118                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1119                     break;

  1120                 case opc_invokedynamic: {

  1121                     int indx = readUShortArg(byteCodes, i);

  1122                     println("invoke dynamic: " + indx);

  1123                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1124                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1125                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1126                     println("  type: " + methodHandle.cpx1);

  1127                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1128                     String mcn = mangleClassName(mi[0]);

  1129                     char[] returnType = {'V'};

  1130                     StringBuilder cnt = new StringBuilder();

  1131                     String mn = findMethodName(mi, cnt, returnType);

  1132                     StringBuilder sb = new StringBuilder();

  1133                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1134                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1135                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1136                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1137                     sb.append("  mn   : ").append(mn).append("\n");

  1138                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1139                     throw new IOException(sb.toString());

  1140                     /*

  1141                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1142                     String type = jc.StringValue(nameAndType.cpx2);

  1143                     String object = accessClass(mcn) + "(false)";

  1144                     if (mn.startsWith("cons_")) {

  1145                         object += ".constructor";

  1146                     }

  1147                     append("var metHan = ");

  1148                     append(accessStaticMethod(object, mn, mi));

  1149                     append('(');

  1150                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1151                     append(lookup);

  1152                     append(", '").append(mi[1]).append("', ");

  1153                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1154                     append(methodType).append("'").append(type).append("', null)");

  1155 //                    if (numArguments > 0) {

  1156 //                        append(vars[0]);

  1157 //                        for (int j = 1; j < numArguments; ++j) {

  1158 //                            append(", ");

  1159 //                            append(vars[j]);

  1160 //                        }

  1161 //                    }

  1162                     append(");");

  1163                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1164                     i += 4;

  1165                     break;

  1166                     */

  1167                 }

  1168                 case opc_new: {

  1169                     int indx = readUShortArg(byteCodes, i);

  1170                     String ci = jc.getClassName(indx);

  1171                     emit(smapper, this, "var @1 = new @2;",

  1172                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1173                     addReference(ci);

  1174                     i += 2;

  1175                     break;

  1176                 }

  1177                 case opc_newarray:

  1178                     int atype = readUByte(byteCodes, ++i);

  1179                     generateNewArray(atype, smapper);

  1180                     break;

  1181                 case opc_anewarray: {

  1182                     int type = readUShortArg(byteCodes, i);

  1183                     i += 2;

  1184                     generateANewArray(type, smapper);

  1185                     break;

  1186                 }

  1187                 case opc_multianewarray: {

  1188                     int type = readUShortArg(byteCodes, i);

  1189                     i += 2;

  1190                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1191                     break;

  1192                 }

  1193                 case opc_arraylength:

  1194                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1195                     break;

  1196                 case opc_lastore:

  1197                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1198                          smapper.popL(), smapper.popI(), smapper.popA());

  1199                     break;

  1200                 case opc_fastore:

  1201                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1202                          smapper.popF(), smapper.popI(), smapper.popA());

  1203                     break;

  1204                 case opc_dastore:

  1205                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1206                          smapper.popD(), smapper.popI(), smapper.popA());

  1207                     break;

  1208                 case opc_aastore:

  1209                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1210                          smapper.popA(), smapper.popI(), smapper.popA());

  1211                     break;

  1212                 case opc_iastore:

  1213                 case opc_bastore:

  1214                 case opc_castore:

  1215                 case opc_sastore:

  1216                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1217                          smapper.popI(), smapper.popI(), smapper.popA());

  1218                     break;

  1219                 case opc_laload:

  1220                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1221                          smapper.popI(), smapper.getA(0));

  1222                     break;

  1223                 case opc_faload:

  1224                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1225                          smapper.popI(), smapper.getA(0));

  1226                     break;

  1227                 case opc_daload:

  1228                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1229                          smapper.popI(), smapper.getA(0));

  1230                     break;

  1231                 case opc_aaload:

  1232                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1233                          smapper.popI(), smapper.getA(0));

  1234                     break;

  1235                 case opc_iaload:

  1236                 case opc_baload:

  1237                 case opc_caload:

  1238                 case opc_saload:

  1239                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1240                          smapper.popI(), smapper.getA(0));

  1241                     break;

  1242                 case opc_pop:

  1243                 case opc_pop2:

  1244                     smapper.pop(1);

  1245                     debug("/* pop */");

  1246                     break;

  1247                 case opc_dup: {

  1248                     final Variable v = smapper.get(0);

  1249                     if (smapper.isDirty()) {

  1250                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1251                     } else {

  1252                         smapper.assign(this, v.getType(), v);

  1253                     }

  1254                     break;

  1255                 }

  1256                 case opc_dup2: {

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

  1259                     if (vi1.isCategory2()) {

  1260                         emit(smapper, this, "var @1 = @2;",

  1261                              smapper.pushT(vi1.getType()), vi1);

  1262                     } else {

  1263                         final Variable vi2 = smapper.get(1);

  1264                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1265                              smapper.pushT(vi2.getType()), vi2,

  1266                              smapper.pushT(vi1.getType()), vi1);

  1267                     }

  1268                     break;

  1269                 }

  1270                 case opc_dup_x1: {

  1271                     final Variable vi1 = smapper.pop(this);

  1272                     final Variable vi2 = smapper.pop(this);

  1273                     final Variable vo3 = smapper.pushT(vi1.getType());

  1274                     final Variable vo2 = smapper.pushT(vi2.getType());

  1275                     final Variable vo1 = smapper.pushT(vi1.getType());

  1277                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1278                          vo1, vi1, vo2, vi2, vo3, vo1);

  1279                     break;

  1280                 }

  1281                 case opc_dup2_x1: {

  1282                     final Variable vi1 = smapper.pop(this);

  1283                     final Variable vi2 = smapper.pop(this);

  1285                     if (vi1.isCategory2()) {

  1286                         final Variable vo3 = smapper.pushT(vi1.getType());

  1287                         final Variable vo2 = smapper.pushT(vi2.getType());

  1288                         final Variable vo1 = smapper.pushT(vi1.getType());

  1290                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1291                              vo1, vi1, vo2, vi2, vo3, vo1);

  1292                     } else {

  1293                         final Variable vi3 = smapper.pop(this);

  1294                         final Variable vo5 = smapper.pushT(vi2.getType());

  1295                         final Variable vo4 = smapper.pushT(vi1.getType());

  1296                         final Variable vo3 = smapper.pushT(vi3.getType());

  1297                         final Variable vo2 = smapper.pushT(vi2.getType());

  1298                         final Variable vo1 = smapper.pushT(vi1.getType());

  1300                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1301                              vo1, vi1, vo2, vi2, vo3, vi3);

  1302                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1303                              vo4, vo1, vo5, vo2);

  1304                     }

  1305                     break;

  1306                 }

  1307                 case opc_dup_x2: {

  1308                     final Variable vi1 = smapper.pop(this);

  1309                     final Variable vi2 = smapper.pop(this);

  1311                     if (vi2.isCategory2()) {

  1312                         final Variable vo3 = smapper.pushT(vi1.getType());

  1313                         final Variable vo2 = smapper.pushT(vi2.getType());

  1314                         final Variable vo1 = smapper.pushT(vi1.getType());

  1316                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1317                              vo1, vi1, vo2, vi2, vo3, vo1);

  1318                     } else {

  1319                         final Variable vi3 = smapper.pop(this);

  1320                         final Variable vo4 = smapper.pushT(vi1.getType());

  1321                         final Variable vo3 = smapper.pushT(vi3.getType());

  1322                         final Variable vo2 = smapper.pushT(vi2.getType());

  1323                         final Variable vo1 = smapper.pushT(vi1.getType());

  1325                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1326                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1327                     }

  1328                     break;

  1329                 }

  1330                 case opc_dup2_x2: {

  1331                     final Variable vi1 = smapper.pop(this);

  1332                     final Variable vi2 = smapper.pop(this);

  1334                     if (vi1.isCategory2()) {

  1335                         if (vi2.isCategory2()) {

  1336                             final Variable vo3 = smapper.pushT(vi1.getType());

  1337                             final Variable vo2 = smapper.pushT(vi2.getType());

  1338                             final Variable vo1 = smapper.pushT(vi1.getType());

  1340                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1341                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1342                         } else {

  1343                             final Variable vi3 = smapper.pop(this);

  1344                             final Variable vo4 = smapper.pushT(vi1.getType());

  1345                             final Variable vo3 = smapper.pushT(vi3.getType());

  1346                             final Variable vo2 = smapper.pushT(vi2.getType());

  1347                             final Variable vo1 = smapper.pushT(vi1.getType());

  1349                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1350                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1351                         }

  1352                     } else {

  1353                         final Variable vi3 = smapper.pop(this);

  1355                         if (vi3.isCategory2()) {

  1356                             final Variable vo5 = smapper.pushT(vi2.getType());

  1357                             final Variable vo4 = smapper.pushT(vi1.getType());

  1358                             final Variable vo3 = smapper.pushT(vi3.getType());

  1359                             final Variable vo2 = smapper.pushT(vi2.getType());

  1360                             final Variable vo1 = smapper.pushT(vi1.getType());

  1362                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1363                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1364                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1365                                  vo4, vo1, vo5, vo2);

  1366                         } else {

  1367                             final Variable vi4 = smapper.pop(this);

  1368                             final Variable vo6 = smapper.pushT(vi2.getType());

  1369                             final Variable vo5 = smapper.pushT(vi1.getType());

  1370                             final Variable vo4 = smapper.pushT(vi4.getType());

  1371                             final Variable vo3 = smapper.pushT(vi3.getType());

  1372                             final Variable vo2 = smapper.pushT(vi2.getType());

  1373                             final Variable vo1 = smapper.pushT(vi1.getType());

  1375                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1376                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1377                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1378                                  vo5, vo1, vo6, vo2);

  1379                         }

  1380                     }

  1381                     break;

  1382                 }

  1383                 case opc_swap: {

  1384                     final Variable vi1 = smapper.get(0);

  1385                     final Variable vi2 = smapper.get(1);

  1387                     if (vi1.getType() == vi2.getType()) {

  1388                         final Variable tmp = smapper.pushT(vi1.getType());

  1390                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1391                              tmp, vi1, vi2);

  1392                         smapper.pop(1);

  1393                     } else {

  1394                         smapper.pop(2);

  1395                         smapper.pushT(vi1.getType());

  1396                         smapper.pushT(vi2.getType());

  1397                     }

  1398                     break;

  1399                 }

  1400                 case opc_bipush:

  1401                     smapper.assign(this, VarType.INTEGER,

  1402                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1403                     break;

  1404                 case opc_sipush:

  1405                     smapper.assign(this, VarType.INTEGER,

  1406                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1407                     );

  1408                     i += 2;

  1409                     break;

  1410                 case opc_getfield: {

  1411                     int indx = readUShortArg(byteCodes, i);

  1412                     String[] fi = jc.getFieldInfoName(indx);

  1413                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1414                     final String mangleClass = mangleClassName(fi[0]);

  1415                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1416                     smapper.replace(this, type, "@2.call(@1)",

  1417                          smapper.getA(0),

  1418                          accessField(mangleClassAccess,

  1419                                      "_" + fi[1], fi)

  1420                     );

  1421                     i += 2;

  1422                     addReference(fi[0]);

  1423                     break;

  1424                 }

  1425                 case opc_putfield: {

  1426                     int indx = readUShortArg(byteCodes, i);

  1427                     String[] fi = jc.getFieldInfoName(indx);

  1428                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1429                     final String mangleClass = mangleClassName(fi[0]);

  1430                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1431                     emit(smapper, this, "@3.call(@2, @1);",

  1432                          smapper.popT(type),

  1433                          smapper.popA(),

  1434                          accessField(mangleClassAccess,

  1435                                      "_" + fi[1], fi));

  1436                     i += 2;

  1437                     addReference(fi[0]);

  1438                     break;

  1439                 }

  1440                 case opc_getstatic: {

  1441                     int indx = readUShortArg(byteCodes, i);

  1442                     String[] fi = jc.getFieldInfoName(indx);

  1443                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1444                     String ac = accessClassFalse(mangleClassName(fi[0]));

  1445                     String af = accessField(ac, "_" + fi[1], fi);

  1446                     smapper.assign(this, type, af + "()");

  1447                     i += 2;

  1448                     addReference(fi[0]);

  1449                     break;

  1450                 }

  1451                 case opc_putstatic: {

  1452                     int indx = readUShortArg(byteCodes, i);

  1453                     String[] fi = jc.getFieldInfoName(indx);

  1454                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1455                     emit(smapper, this, "@1._@2(@3);",

  1456                          accessClassFalse(mangleClassName(fi[0])), fi[1],

  1457                          smapper.popT(type));

  1458                     i += 2;

  1459                     addReference(fi[0]);

  1460                     break;

  1461                 }

  1462                 case opc_checkcast: {

  1463                     int indx = readUShortArg(byteCodes, i);

  1464                     generateCheckcast(indx, smapper);

  1465                     i += 2;

  1466                     break;

  1467                 }

  1468                 case opc_instanceof: {

  1469                     int indx = readUShortArg(byteCodes, i);

  1470                     generateInstanceOf(indx, smapper);

  1471                     i += 2;

  1472                     break;

  1473                 }

  1474                 case opc_athrow: {

  1475                     final CharSequence v = smapper.popA();

  1476                     smapper.clear();

  1478                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1479                          smapper.pushA(), v);

  1480                     break;

  1481                 }

  1483                 case opc_monitorenter: {

  1484                     debug("/* monitor enter */");

  1485                     smapper.popA();

  1486                     break;

  1487                 }

  1489                 case opc_monitorexit: {

  1490                     debug("/* monitor exit */");

  1491                     smapper.popA();

  1492                     break;

  1493                 }

  1495                 case opc_wide:

  1496                     wide = true;

  1497                     break;

  1499                 default: {

  1500                     wide = false;

  1501                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1502                          Integer.toString(c));

  1503                 }

  1504             }

  1505             if (debug(" //")) {

  1506                 generateByteCodeComment(prev, i, byteCodes);

  1507             }

  1508             if (outChanged) {

  1509                 append("\n");

  1510             }

  1511         }

  1512         if (previousTrap != null) {

  1513             generateCatch(previousTrap, flow, byteCodes.length, topMostLabel);

  1514         }

  1515         if (didBranches) {

  1516             append("\n    }\n");

  1517         }

  1518         while (openBraces-- > 0) {

  1519             append('}');

  1520         }

  1521         if (defineProp) {

  1522             append("\n}});");

  1523         } else {

  1524             append("\n};");

  1525         }

  1526         return defineProp;

  1527     }

  1529     private int generateIf(StackMapper mapper, Flow flow, byte[] byteCodes, int i, final CharSequence v2, final CharSequence v1, final String test, int topMostLabel) throws IOException {

  1530         mapper.flush(this);

  1531         int indx = i + readShortArg(byteCodes, i);

  1532         append("if ((").append(v1)

  1533            .append(") ").append(test).append(" (")

  1534            .append(v2).append(")) ");

  1535         goTo(this, flow, i, indx, topMostLabel);

  1536         return i + 2;

  1537     }

  1539     private int readInt4(byte[] byteCodes, int offset) {

  1540         final int d = byteCodes[offset + 0] << 24;

  1541         final int c = byteCodes[offset + 1] << 16;

  1542         final int b = byteCodes[offset + 2] << 8;

  1543         final int a = byteCodes[offset + 3];

  1544         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1545     }

  1546     private static int readUByte(byte[] byteCodes, int offset) {

  1547         return byteCodes[offset] & 0xff;

  1548     }

  1550     private static int readUShort(byte[] byteCodes, int offset) {

  1551         return ((byteCodes[offset] & 0xff) << 8)

  1552                     | (byteCodes[offset + 1] & 0xff);

  1553     }

  1554     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1555         return readUShort(byteCodes, offsetInstruction + 1);

  1556     }

  1558     private static int readShort(byte[] byteCodes, int offset) {

  1559         int signed = byteCodes[offset];

  1560         byte b0 = (byte)signed;

  1561         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1562     }

  1563     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1564         return readShort(byteCodes, offsetInstruction + 1);

  1565     }

  1567     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1568         int i = 0;

  1569         Boolean count = null;

  1570         boolean array = false;

  1571         sig.append("__");

  1572         int firstPos = sig.length();

  1573         while (i < descriptor.length()) {

  1574             char ch = descriptor.charAt(i++);

  1575             switch (ch) {

  1576                 case '(':

  1577                     count = true;

  1578                     continue;

  1579                 case ')':

  1580                     count = false;

  1581                     continue;

  1582                 case 'B':

  1583                 case 'C':

  1584                 case 'D':

  1585                 case 'F':

  1586                 case 'I':

  1587                 case 'J':

  1588                 case 'S':

  1589                 case 'Z':

  1590                     if (count) {

  1591                         if (array) {

  1592                             sig.append("_3");

  1593                         }

  1594                         sig.append(ch);

  1595                         if (ch == 'J' || ch == 'D') {

  1596                             cnt.append('1');

  1597                         } else {

  1598                             cnt.append('0');

  1599                         }

  1600                     } else {

  1601                         sig.insert(firstPos, ch);

  1602                         if (array) {

  1603                             returnType[0] = '[';

  1604                             sig.insert(firstPos, "_3");

  1605                         } else {

  1606                             returnType[0] = ch;

  1607                         }

  1608                     }

  1609                     array = false;

  1610                     continue;

  1611                 case 'V':

  1612                     assert !count;

  1613                     returnType[0] = 'V';

  1614                     sig.insert(firstPos, 'V');

  1615                     continue;

  1616                 case 'L':

  1617                     int next = descriptor.indexOf(';', i);

  1618                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1619                     if (count) {

  1620                         if (array) {

  1621                             sig.append("_3");

  1622                         }

  1623                         sig.append(realSig);

  1624                         cnt.append('0');

  1625                     } else {

  1626                         sig.insert(firstPos, realSig);

  1627                         if (array) {

  1628                             sig.insert(firstPos, "_3");

  1629                         }

  1630                         returnType[0] = 'L';

  1631                     }

  1632                     i = next + 1;

  1633                     array = false;

  1634                     continue;

  1635                 case '[':

  1636                     array = true;

  1637                     continue;

  1638                 default:

  1639                     throw new IllegalStateException("Invalid char: " + ch);

  1640             }

  1641         }

  1642     }

  1644     static String mangleSig(String sig) {

  1645         return mangleSig(sig, 0, sig.length());

  1646     }

  1648     private static String mangleMethodName(String name) {

  1649         StringBuilder sb = new StringBuilder(name.length() * 2);

  1650         int last = name.length();

  1651         for (int i = 0; i < last; i++) {

  1652             final char ch = name.charAt(i);

  1653             switch (ch) {

  1654                 case '_': sb.append("_1"); break;

  1655                 default: sb.append(ch); break;

  1656             }

  1657         }

  1658         return sb.toString();

  1659     }

  1660     private static String mangleSig(String txt, int first, int last) {

  1661         StringBuilder sb = new StringBuilder((last - first) * 2);

  1662         for (int i = first; i < last; i++) {

  1663             final char ch = txt.charAt(i);

  1664             switch (ch) {

  1665                 case '/': sb.append('_'); break;

  1666                 case '_': sb.append("_1"); break;

  1667                 case ';': sb.append("_2"); break;

  1668                 case '[': sb.append("_3"); break;

  1669                 default:

  1670                     if (Character.isJavaIdentifierPart(ch)) {

  1671                         sb.append(ch);

  1672                     } else {

  1673                         sb.append("_0");

  1674                         String hex = Integer.toHexString(ch).toLowerCase();

  1675                         for (int m = hex.length(); m < 4; m++) {

  1676                             sb.append("0");

  1677                         }

  1678                         sb.append(hex);

  1679                     }

  1680                 break;

  1681             }

  1682         }

  1683         return sb.toString();

  1684     }

  1686     private static String mangleClassName(String name) {

  1687         return mangleSig(name);

  1688     }

  1690     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1691         StringBuilder name = new StringBuilder();

  1692         if ("<init>".equals(m.getName())) { // NOI18N

  1693             name.append("cons"); // NOI18N

  1694         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1695             name.append("class"); // NOI18N

  1696         } else {

  1697             name.append(mangleMethodName(m.getName()));

  1698         }

  1700         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1701         return name.toString();

  1702     }

  1704     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1705         StringBuilder name = new StringBuilder();

  1706         String descr = mi[2];//mi.getDescriptor();

  1707         String nm= mi[1];

  1708         if ("<init>".equals(nm)) { // NOI18N

  1709             name.append("cons"); // NOI18N

  1710         } else {

  1711             name.append(mangleMethodName(nm));

  1712         }

  1713         countArgs(descr, returnType, name, cnt);

  1714         return name.toString();

  1715     }

  1717     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1718     throws IOException {

  1719         int methodIndex = readUShortArg(byteCodes, i);

  1720         String[] mi = jc.getFieldInfoName(methodIndex);

  1721         char[] returnType = { 'V' };

  1722         StringBuilder cnt = new StringBuilder();

  1723         String mn = findMethodName(mi, cnt, returnType);

  1725         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1726         final CharSequence[] vars = new CharSequence[numArguments];

  1728         for (int j = numArguments - 1; j >= 0; --j) {

  1729             vars[j] = mapper.popValue();

  1730         }

  1732         if ((

  1733             "newUpdater__Ljava_util_concurrent_atomic_AtomicIntegerFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1734             && "java/util/concurrent/atomic/AtomicIntegerFieldUpdater".equals(mi[0])

  1735         ) || (

  1736             "newUpdater__Ljava_util_concurrent_atomic_AtomicLongFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1737             && "java/util/concurrent/atomic/AtomicLongFieldUpdater".equals(mi[0])

  1738         )) {

  1739             if (vars[1] instanceof String) {

  1740                 String field = vars[1].toString();

  1741                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1742                     vars[1] = "c._" + field.substring(1, field.length() - 1);

  1743                 }

  1744             }

  1745         }

  1746         if (

  1747             "newUpdater__Ljava_util_concurrent_atomic_AtomicReferenceFieldUpdater_2Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1748             && "java/util/concurrent/atomic/AtomicReferenceFieldUpdater".equals(mi[0])

  1749         ) {

  1750             if (vars[1] instanceof String) {

  1751                 String field = vars[2].toString();

  1752                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1753                     vars[2] = "c._" + field.substring(1, field.length() - 1);

  1754                 }

  1755             }

  1756         }

  1758         if (returnType[0] != 'V') {

  1759             mapper.flush(this);

  1760             append("var ")

  1761                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1762                .append(" = ");

  1763         }

  1765         final String in = mi[0];

  1766         String mcn;

  1767         if (callbacks && (

  1768             in.equals("org/apidesign/html/boot/spi/Fn") ||

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

  1770         )) {

  1771             mcn = "java_lang_Class";

  1772         } else {

  1773             mcn = mangleClassName(in);

  1774         }

  1775         String object = accessClassFalse(mcn);

  1776         if (mn.startsWith("cons_")) {

  1777             object += ".constructor";

  1778         }

  1779         append(accessStaticMethod(object, mn, mi));

  1780         if (isStatic) {

  1781             append('(');

  1782         } else {

  1783             append(".call(");

  1784         }

  1785         if (numArguments > 0) {

  1786             append(vars[0]);

  1787             for (int j = 1; j < numArguments; ++j) {

  1788                 append(", ");

  1789                 append(vars[j]);

  1790             }

  1791         }

  1792         append(");");

  1793         i += 2;

  1794         addReference(in);

  1795         return i;

  1796     }

  1797     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1798     throws IOException {

  1799         int methodIndex = readUShortArg(byteCodes, i);

  1800         String[] mi = jc.getFieldInfoName(methodIndex);

  1801         char[] returnType = { 'V' };

  1802         StringBuilder cnt = new StringBuilder();

  1803         String mn = findMethodName(mi, cnt, returnType);

  1805         final int numArguments = cnt.length() + 1;

  1806         final CharSequence[] vars =  new CharSequence[numArguments];

  1808         for (int j = numArguments - 1; j >= 0; --j) {

  1809             vars[j] = mapper.popValue();

  1810         }

  1812         if (returnType[0] != 'V') {

  1813             mapper.flush(this);

  1814             append("var ")

  1815                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1816                .append(" = ");

  1817         }

  1819         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1820         String sep = "";

  1821         for (int j = 1; j < numArguments; ++j) {

  1822             append(sep);

  1823             append(vars[j]);

  1824             sep = ", ";

  1825         }

  1826         append(");");

  1827         i += 2;

  1828         return i;

  1829     }

  1831     private void addReference(String cn) throws IOException {

  1832         if (requireReference(cn)) {

  1833             debug(" /* needs " + cn + " */");

  1834         }

  1835     }

  1837     private void outType(String d, StringBuilder out) {

  1838         int arr = 0;

  1839         while (d.charAt(0) == '[') {

  1840             out.append('A');

  1841             d = d.substring(1);

  1842         }

  1843         if (d.charAt(0) == 'L') {

  1844             assert d.charAt(d.length() - 1) == ';';

  1845             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1846         } else {

  1847             out.append(d);

  1848         }

  1849     }

  1851     private String encodeConstant(int entryIndex) throws IOException {

  1852         String[] classRef = { null };

  1853         String s = jc.stringValue(entryIndex, classRef);

  1854         if (classRef[0] != null) {

  1855             if (classRef[0].startsWith("[")) {

  1856                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1857             } else {

  1858                 addReference(classRef[0]);

  1859                 s = accessClassFalse(mangleClassName(s)) + ".constructor.$class";

  1860             }

  1861         }

  1862         return s;

  1863     }

  1865     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1866         byte[] arr = m.findAnnotationData(true);

  1867         if (arr == null) {

  1868             return null;

  1869         }

  1870         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1871         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1872         class P extends AnnotationParser {

  1873             public P() {

  1874                 super(false, true);

  1875             }

  1877             int cnt;

  1878             String[] args = new String[30];

  1879             String body;

  1880             boolean javacall;

  1881             boolean html4j;

  1883             @Override

  1884             protected void visitAttr(String type, String attr, String at, String value) {

  1885                 if (type.equals(jvmType)) {

  1886                     if ("body".equals(attr)) {

  1887                         body = value;

  1888                     } else if ("args".equals(attr)) {

  1889                         args[cnt++] = value;

  1890                     } else {

  1891                         throw new IllegalArgumentException(attr);

  1892                     }

  1893                 }

  1894                 if (type.equals(htmlType)) {

  1895                     html4j = true;

  1896                     if ("body".equals(attr)) {

  1897                         body = value;

  1898                     } else if ("args".equals(attr)) {

  1899                         args[cnt++] = value;

  1900                     } else if ("javacall".equals(attr)) {

  1901                         javacall = "1".equals(value);

  1902                     } else if ("wait4js".equals(attr)) {

  1903                         // ignore, we always invoke synchronously

  1904                     } else {

  1905                         throw new IllegalArgumentException(attr);

  1906                     }

  1907                 }

  1908             }

  1909         }

  1910         P p = new P();

  1911         p.parse(arr, jc);

  1912         if (p.body == null) {

  1913             return null;

  1914         }

  1915         StringBuilder cnt = new StringBuilder();

  1916         final String mn = findMethodName(m, cnt);

  1917         append("m = ").append(destObject).append(".").append(mn);

  1918         append(" = function(");

  1919         String space = "";

  1920         int index = 0;

  1921         StringBuilder toValue = new StringBuilder();

  1922         for (int i = 0; i < cnt.length(); i++) {

  1923             append(space);

  1924             space = outputArg(this, p.args, index);

  1925             if (p.html4j && space.length() > 0) {

  1926                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1927                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1928                     append(p.args[index]).append(");");

  1929             }

  1930             index++;

  1931         }

  1932         append(") {").append("\n");

  1933         append(toValue.toString());

  1934         if (p.javacall) {

  1935             int lastSlash = jc.getClassName().lastIndexOf('/');

  1936             final String pkg = jc.getClassName().substring(0, lastSlash);

  1937             append(mangleCallbacks(pkg, p.body));

  1938             requireReference(pkg + "/$JsCallbacks$");

  1939         } else {

  1940             append(p.body);

  1941         }

  1942         append("\n}\n");

  1943         return mn;

  1944     }

  1946     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1947         StringBuilder sb = new StringBuilder();

  1948         int pos = 0;

  1949         for (;;) {

  1950             int next = body.indexOf(".@", pos);

  1951             if (next == -1) {

  1952                 sb.append(body.substring(pos));

  1953                 body = sb.toString();

  1954                 break;

  1955             }

  1956             int ident = next;

  1957             while (ident > 0) {

  1958                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1959                     ident++;

  1960                     break;

  1961                 }

  1962             }

  1963             String refId = body.substring(ident, next);

  1965             sb.append(body.substring(pos, ident));

  1967             int sigBeg = body.indexOf('(', next);

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

  1969             int colon4 = body.indexOf("::", next);

  1970             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1971                 throw new IllegalStateException("Malformed body " + body);

  1972             }

  1973             String fqn = body.substring(next + 2, colon4);

  1974             String method = body.substring(colon4 + 2, sigBeg);

  1975             String params = body.substring(sigBeg, sigEnd + 1);

  1977             int paramBeg = body.indexOf('(', sigEnd + 1);

  1979             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1980             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1981             sb.append("(").append(refId);

  1982             if (body.charAt(paramBeg + 1) != ')') {

  1983                 sb.append(",");

  1984             }

  1985             pos = paramBeg + 1;

  1986         }

  1987         sb = null;

  1988         pos = 0;

  1989         for (;;) {

  1990             int next = body.indexOf("@", pos);

  1991             if (next == -1) {

  1992                 if (sb == null) {

  1993                     return body;

  1994                 }

  1995                 sb.append(body.substring(pos));

  1996                 return sb;

  1997             }

  1998             if (sb == null) {

  1999                 sb = new StringBuilder();

  2000             }

  2002             sb.append(body.substring(pos, next));

  2004             int sigBeg = body.indexOf('(', next);

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

  2006             int colon4 = body.indexOf("::", next);

  2007             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2008                 throw new IllegalStateException("Malformed body " + body);

  2009             }

  2010             String fqn = body.substring(next + 1, colon4);

  2011             String method = body.substring(colon4 + 2, sigBeg);

  2012             String params = body.substring(sigBeg, sigEnd + 1);

  2014             int paramBeg = body.indexOf('(', sigEnd + 1);

  2016             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  2017             sb.append(mangleJsCallbacks(fqn, method, params, true));

  2018             sb.append("(");

  2019             pos = paramBeg + 1;

  2020         }

  2021     }

  2023     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  2024         if (params.startsWith("(")) {

  2025             params = params.substring(1);

  2026         }

  2027         if (params.endsWith(")")) {

  2028             params = params.substring(0, params.length() - 1);

  2029         }

  2030         StringBuilder sb = new StringBuilder();

  2031         final String fqnu = fqn.replace('.', '_');

  2032         final String rfqn = mangleClassName(fqnu);

  2033         final String rm = mangleMethodName(method);

  2034         final String srp;

  2035         {

  2036             StringBuilder pb = new StringBuilder();

  2037             int len = params.length();

  2038             int indx = 0;

  2039             while (indx < len) {

  2040                 char ch = params.charAt(indx);

  2041                 if (ch == '[' || ch == 'L') {

  2042                     int column = params.indexOf(';', indx) + 1;

  2043                     if (column > indx) {

  2044                         String real = params.substring(indx, column);

  2045                         if ("Ljava/lang/String;".equals(real)) {

  2046                             pb.append("Ljava/lang/String;");

  2047                             indx = column;

  2048                             continue;

  2049                         }

  2050                     }

  2051                     pb.append("Ljava/lang/Object;");

  2052                     indx = column;

  2053                 } else {

  2054                     pb.append(ch);

  2055                     indx++;

  2056                 }

  2057             }

  2058             srp = mangleSig(pb.toString());

  2059         }

  2060         final String rp = mangleSig(params);

  2061         final String mrp = mangleMethodName(rp);

  2062         sb.append(rfqn).append("$").append(rm).

  2063             append('$').append(mrp).append("__Ljava_lang_Object_2");

  2064         if (!isStatic) {

  2065             sb.append('L').append(fqnu).append("_2");

  2066         }

  2067         sb.append(srp);

  2068         return sb.toString();

  2069     }

  2071     private static String className(ClassData jc) {

  2072         //return jc.getName().getInternalName().replace('/', '_');

  2073         return mangleClassName(jc.getClassName());

  2074     }

  2076     private static String[] findAnnotation(

  2077         byte[] arr, ClassData cd, final String className,

  2078         final String... attrNames

  2079     ) throws IOException {

  2080         if (arr == null) {

  2081             return null;

  2082         }

  2083         final String[] values = new String[attrNames.length];

  2084         final boolean[] found = { false };

  2085         final String jvmType = "L" + className.replace('.', '/') + ";";

  2086         AnnotationParser ap = new AnnotationParser(false, true) {

  2087             @Override

  2088             protected void visitAttr(String type, String attr, String at, String value) {

  2089                 if (type.equals(jvmType)) {

  2090                     found[0] = true;

  2091                     for (int i = 0; i < attrNames.length; i++) {

  2092                         if (attrNames[i].equals(attr)) {

  2093                             values[i] = value;

  2094                         }

  2095                     }

  2096                 }

  2097             }

  2099         };

  2100         ap.parse(arr, cd);

  2101         return found[0] ? values : null;

  2102     }

  2104     private CharSequence initField(FieldData v) {

  2105         final String is = v.getInternalSig();

  2106         if (is.length() == 1) {

  2107             switch (is.charAt(0)) {

  2108                 case 'S':

  2109                 case 'J':

  2110                 case 'B':

  2111                 case 'Z':

  2112                 case 'C':

  2113                 case 'I': return " = 0;";

  2114                 case 'F':

  2115                 case 'D': return " = 0.0;";

  2116                 default:

  2117                     throw new IllegalStateException(is);

  2118             }

  2119         }

  2120         return " = null;";

  2121     }

  2123     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2124         AnnotationParser ap = new AnnotationParser(true, false) {

  2125             int[] cnt = new int[32];

  2126             int depth;

  2128             @Override

  2129             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2130                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2131                 requireReference(slashType);

  2133                 if (cnt[depth]++ > 0) {

  2134                     append(",");

  2135                 }

  2136                 if (top) {

  2137                     append('"').append(attrType).append("\" : ");

  2138                 }

  2139                 append("{\n");

  2140                 cnt[++depth] = 0;

  2141             }

  2143             @Override

  2144             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2145                 append("\n}\n");

  2146                 depth--;

  2147             }

  2149             @Override

  2150             protected void visitValueStart(String attrName, char type) throws IOException {

  2151                 if (cnt[depth]++ > 0) {

  2152                     append(",\n");

  2153                 }

  2154                 cnt[++depth] = 0;

  2155                 if (attrName != null) {

  2156                     append('"').append(attrName).append("\" : ");

  2157                 }

  2158                 if (type == '[') {

  2159                     append("[");

  2160                 }

  2161             }

  2163             @Override

  2164             protected void visitValueEnd(String attrName, char type) throws IOException {

  2165                 if (type == '[') {

  2166                     append("]");

  2167                 }

  2168                 depth--;

  2169             }

  2171             @Override

  2172             protected void visitAttr(String type, String attr, String attrType, String value)

  2173             throws IOException {

  2174                 if (attr == null && value == null) {

  2175                     return;

  2176                 }

  2177                 append(value);

  2178             }

  2180             @Override

  2181             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2182             throws IOException {

  2183                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2184                 requireReference(slashType);

  2186                 final String cn = mangleClassName(slashType);

  2187                 append(accessClassFalse(cn))

  2188                    .append("['valueOf__L").

  2189                     append(cn).

  2190                     append("_2Ljava_lang_String_2']('").

  2191                     append(value).

  2192                     append("')");

  2193             }

  2194         };

  2195         ap.parse(data, cd);

  2196     }

  2198     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2199         final String name = args[indx];

  2200         if (name == null) {

  2201             return "";

  2202         }

  2203         if (name.contains(",")) {

  2204             throw new IOException("Wrong parameter with ',': " + name);

  2205         }

  2206         out.append(name);

  2207         return ",";

  2208     }

  2210     final void emitNoFlush(

  2211         StackMapper sm,

  2212         final String format, final CharSequence... params

  2213     ) throws IOException {

  2214         emitImpl(this, format, params);

  2215     }

  2216     static final void emit(

  2217         StackMapper sm,

  2218         final Appendable out,

  2219         final String format, final CharSequence... params

  2220     ) throws IOException {

  2221         sm.flush(out);

  2222         emitImpl(out, format, params);

  2223     }

  2224     static void emitImpl(final Appendable out,

  2225                              final String format,

  2226                              final CharSequence... params) throws IOException {

  2227         final int length = format.length();

  2229         int processed = 0;

  2230         int paramOffset = format.indexOf('@');

  2231         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2232             final char paramChar = format.charAt(paramOffset + 1);

  2233             if ((paramChar >= '1') && (paramChar <= '9')) {

  2234                 final int paramIndex = paramChar - '0' - 1;

  2236                 out.append(format, processed, paramOffset);

  2237                 out.append(params[paramIndex]);

  2239                 ++paramOffset;

  2240                 processed = paramOffset + 1;

  2241             }

  2243             paramOffset = format.indexOf('@', paramOffset + 1);

  2244         }

  2246         out.append(format, processed, length);

  2247     }

  2249     private void generateCatch(TrapData[] traps, Flow flow, int current, int topMostLabel) throws IOException {

  2250         append("} catch (e) {\n");

  2251         int finallyPC = -1;

  2252         for (TrapData e : traps) {

  2253             if (e == null) {

  2254                 break;

  2255             }

  2256             if (e.catch_cpx != 0) { //not finally

  2257                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2258                 addReference(classInternalName);

  2259                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2260                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2261                 append("var stA0 = e;");

  2262                 goTo(this, flow, current, e.handler_pc, topMostLabel);

  2263                 append("}\n");

  2264             } else {

  2265                 finallyPC = e.handler_pc;

  2266             }

  2267         }

  2268         if (finallyPC == -1) {

  2269             append("throw e;");

  2270         } else {

  2271             append("var stA0 = e;");

  2272             goTo(this, flow, current, finallyPC, topMostLabel);

  2273         }

  2274         append("\n}");

  2275     }

  2277     private static void goTo(Appendable out, Flow flow, int current, int to, int canBack) throws IOException {

  2278         if (to < current) {

  2279             if (canBack < to) {

  2280                 out.append("{ gt = 0; continue X_" + to + "; }");

  2281             } else {

  2282                 out.append("{ gt = " + to + "; continue X_0; }");

  2283             }

  2284         } else {

  2285             out.append("{ gt = " + to + "; break IF; }");

  2286         }

  2287     }

  2289     private static void emitIf(

  2290         StackMapper sm, Flow flow, Appendable out, String pattern, CharSequence param, int current, int to, int canBack

  2291     ) throws IOException {

  2292         sm.flush(out);

  2293         emitImpl(out, pattern, param);

  2294         goTo(out, flow, current, to, canBack);

  2295     }

  2297     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2298         String jvmType;

  2299         switch (atype) {

  2300             case 4: jvmType = "[Z"; break;

  2301             case 5: jvmType = "[C"; break;

  2302             case 6: jvmType = "[F"; break;

  2303             case 7: jvmType = "[D"; break;

  2304             case 8: jvmType = "[B"; break;

  2305             case 9: jvmType = "[S"; break;

  2306             case 10: jvmType = "[I"; break;

  2307             case 11: jvmType = "[J"; break;

  2308             default: throw new IllegalStateException("Array type: " + atype);

  2309         }

  2310         emit(smapper, this,

  2311             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2312              smapper.popI(), smapper.pushA(), jvmType);

  2313     }

  2315     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2316         String typeName = jc.getClassName(type);

  2317         String ref = "null";

  2318         if (typeName.startsWith("[")) {

  2319             typeName = "'[" + typeName + "'";

  2320         } else {

  2321             ref = "vm." + mangleClassName(typeName);

  2322             typeName = "'[L" + typeName + ";'";

  2323         }

  2324         emit(smapper, this,

  2325             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2326              smapper.popI(), smapper.pushA(), typeName, ref);

  2327     }

  2329     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2330         String typeName = jc.getClassName(type);

  2331         int dim = readUByte(byteCodes, ++i);

  2332         StringBuilder dims = new StringBuilder();

  2333         dims.append('[');

  2334         for (int d = 0; d < dim; d++) {

  2335             if (d != 0) {

  2336                 dims.insert(1, ",");

  2337             }

  2338             dims.insert(1, smapper.popI());

  2339         }

  2340         dims.append(']');

  2341         String fn = "null";

  2342         if (typeName.charAt(dim) == 'L') {

  2343             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2344         }

  2345         emit(smapper, this,

  2346             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2347              dims.toString(), smapper.pushA(), typeName, fn

  2348         );

  2349         return i;

  2350     }

  2352     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, Flow flow, int topMostLabel) throws IOException {

  2353         int table = i / 4 * 4 + 4;

  2354         int dflt = i + readInt4(byteCodes, table);

  2355         table += 4;

  2356         int low = readInt4(byteCodes, table);

  2357         table += 4;

  2358         int high = readInt4(byteCodes, table);

  2359         table += 4;

  2360         final CharSequence swVar = smapper.popValue();

  2361         smapper.flush(this);

  2362         append("switch (").append(swVar).append(") {\n");

  2363         while (low <= high) {

  2364             int offset = i + readInt4(byteCodes, table);

  2365             table += 4;

  2366             append("  case " + low).append(":"); goTo(this, flow, i, offset, topMostLabel); append('\n');

  2367             low++;

  2368         }

  2369         append("  default: ");

  2370         goTo(this, flow, i, dflt, topMostLabel);

  2371         append("\n}");

  2372         i = table - 1;

  2373         return i;

  2374     }

  2376     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, Flow flow, int topMostLabel) throws IOException {

  2377         int table = i / 4 * 4 + 4;

  2378         int dflt = i + readInt4(byteCodes, table);

  2379         table += 4;

  2380         int n = readInt4(byteCodes, table);

  2381         table += 4;

  2382         final CharSequence swVar = smapper.popValue();

  2383         smapper.flush(this);

  2384         append("switch (").append(swVar).append(") {\n");

  2385         while (n-- > 0) {

  2386             int cnstnt = readInt4(byteCodes, table);

  2387             table += 4;

  2388             int offset = i + readInt4(byteCodes, table);

  2389             table += 4;

  2390             append("  case " + cnstnt).append(": "); goTo(this, flow, i, offset, topMostLabel); append('\n');

  2391         }

  2392         append("  default: ");

  2393         goTo(this, flow, i, dflt, topMostLabel);

  2394         append("\n}");

  2395         i = table - 1;

  2396         return i;

  2397     }

  2399     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2400         String type = jc.getClassName(indx);

  2401         if (!type.startsWith("[")) {

  2402             emit(smapper, this,

  2403                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2404                  smapper.popA(), smapper.pushI(),

  2405                  type.replace('/', '_'));

  2406         } else {

  2407             int cnt = 0;

  2408             while (type.charAt(cnt) == '[') {

  2409                 cnt++;

  2410             }

  2411             if (type.charAt(cnt) == 'L') {

  2412                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2413                 emit(smapper, this,

  2414                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2415                     smapper.popA(), smapper.pushI(),

  2416                     type, "" + cnt

  2417                 );

  2418             } else {

  2419                 emit(smapper, this,

  2420                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2421                     smapper.popA(), smapper.pushI(), type

  2422                 );

  2423             }

  2424         }

  2425     }

  2427     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2428         String type = jc.getClassName(indx);

  2429         if (!type.startsWith("[")) {

  2430             emitNoFlush(smapper,

  2431                  "if (@1 !== null && !@1['$instOf_@2']) vm.java_lang_Class(false).castEx();",

  2432                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2433         } else {

  2434             int cnt = 0;

  2435             while (type.charAt(cnt) == '[') {

  2436                 cnt++;

  2437             }

  2438             if (type.charAt(cnt) == 'L') {

  2439                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2440                 emitNoFlush(smapper,

  2441                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) vm.java_lang_Class(false).castEx();",

  2442                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2443                 );

  2444             } else {

  2445                 emitNoFlush(smapper,

  2446                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) vm.java_lang_Class(false).castEx();",

  2447                      smapper.getT(0, VarType.REFERENCE, false), type

  2448                 );

  2449             }

  2450         }

  2451     }

  2453     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2454         for (int j = prev; j <= i; j++) {

  2455             append(" ");

  2456             final int cc = readUByte(byteCodes, j);

  2457             append(Integer.toString(cc));

  2458         }

  2459     }

  2461     @JavaScriptBody(args = "msg", body = "")

  2462     private static void println(String msg) {

  2463         System.err.println(msg);

  2464     }

  2466     protected Flow checkFlow(MethodData byteCodes) {

  2467         return null;

  2468     }

  2469 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Thu, 12 Mar 2015 11:16:15 +0100
branch	flow
changeset 1814	ea9fd59c8b62
parent 1813	5c30fa1c8c5b
child 1816	6c1fa412c72d
permissions	-rw-r--r--