hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@6c1fa412c72d

     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             lastStackFrame = -1;

   470             if (flow == null) {

   471                 didBranches = true;

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

   473             } else {

   474                 didBranches = false;

   475             }

   476         }

   478         int openBraces = 0;

   479         int topMostLabel = 0;

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

   481             int prev = i;

   482             outChanged = false;

   483             stackMapIterator.advanceTo(i);

   484             boolean changeInCatch = trap.advanceTo(i);

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

   486                 if (previousTrap != null) {

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

   488                     previousTrap = null;

   489                 }

   490             }

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

   492                 smapper.flush(this);

   493                 if (flow == null && i != 0) {

   494                     append("    }\n");

   495                 }

   496                 if (openBraces > 64) {

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

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

   499                     }

   500                     openBraces = 1;

   501                     topMostLabel = i;

   502                 }

   504                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

   507                 if (flow == null) {

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

   509                     openBraces++;

   510                 } else {

   511                     if (!flow.isFlow(i)) {

   512                         if (i != 0) {

   513                             throw new IOException("Expecting flow suggestion at " + i);

   514                         }

   515                     }

   516                 }

   517                 changeInCatch = true;

   518             } else {

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

   520             }

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

   522                 append("try {");

   523                 previousTrap = trap.current();

   524             }

   525             if (flow != null) {

   526                 if (flow.isLoop(i)) {

   527                     append("    for (;;) {\n");

   528                 }

   529                 if (flow.isBreak(i)) {

   530                     append("\n    break;");

   531                 }

   532                 for (int j = 0; j < flow.isEnd(i); j++) {

   533                     append("\n    }");

   534                 }

   535                 if (flow.isElse(i)) {

   536                     append("    else {\n");

   537                 }

   538             }

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

   540             switch (c) {

   541                 case opc_aload_0:

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

   543                     break;

   544                 case opc_iload_0:

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

   546                     break;

   547                 case opc_lload_0:

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

   549                     break;

   550                 case opc_fload_0:

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

   552                     break;

   553                 case opc_dload_0:

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

   555                     break;

   556                 case opc_aload_1:

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

   558                     break;

   559                 case opc_iload_1:

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

   561                     break;

   562                 case opc_lload_1:

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

   564                     break;

   565                 case opc_fload_1:

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

   567                     break;

   568                 case opc_dload_1:

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

   570                     break;

   571                 case opc_aload_2:

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

   573                     break;

   574                 case opc_iload_2:

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

   576                     break;

   577                 case opc_lload_2:

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

   579                     break;

   580                 case opc_fload_2:

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

   582                     break;

   583                 case opc_dload_2:

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

   585                     break;

   586                 case opc_aload_3:

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

   588                     break;

   589                 case opc_iload_3:

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

   591                     break;

   592                 case opc_lload_3:

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

   594                     break;

   595                 case opc_fload_3:

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

   597                     break;

   598                 case opc_dload_3:

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

   600                     break;

   601                 case opc_iload: {

   602                     ++i;

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

   604                                           : readUByte(byteCodes, i);

   605                     wide = false;

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

   607                     break;

   608                 }

   609                 case opc_lload: {

   610                     ++i;

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

   612                                           : readUByte(byteCodes, i);

   613                     wide = false;

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

   615                     break;

   616                 }

   617                 case opc_fload: {

   618                     ++i;

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

   620                                           : readUByte(byteCodes, i);

   621                     wide = false;

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

   623                     break;

   624                 }

   625                 case opc_dload: {

   626                     ++i;

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

   628                                           : readUByte(byteCodes, i);

   629                     wide = false;

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

   631                     break;

   632                 }

   633                 case opc_aload: {

   634                     ++i;

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

   636                                           : readUByte(byteCodes, i);

   637                     wide = false;

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

   639                     break;

   640                 }

   641                 case opc_istore: {

   642                     ++i;

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

   644                                           : readUByte(byteCodes, i);

   645                     wide = false;

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

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

   648                     break;

   649                 }

   650                 case opc_lstore: {

   651                     ++i;

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

   653                                           : readUByte(byteCodes, i);

   654                     wide = false;

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

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

   657                     break;

   658                 }

   659                 case opc_fstore: {

   660                     ++i;

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

   662                                           : readUByte(byteCodes, i);

   663                     wide = false;

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

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

   666                     break;

   667                 }

   668                 case opc_dstore: {

   669                     ++i;

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

   671                                           : readUByte(byteCodes, i);

   672                     wide = false;

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

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

   675                     break;

   676                 }

   677                 case opc_astore: {

   678                     ++i;

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

   680                                           : readUByte(byteCodes, i);

   681                     wide = false;

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

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

   684                     break;

   685                 }

   686                 case opc_astore_0:

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

   688                     break;

   689                 case opc_istore_0:

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

   691                     break;

   692                 case opc_lstore_0:

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

   694                     break;

   695                 case opc_fstore_0:

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

   697                     break;

   698                 case opc_dstore_0:

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

   700                     break;

   701                 case opc_astore_1:

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

   703                     break;

   704                 case opc_istore_1:

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

   706                     break;

   707                 case opc_lstore_1:

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

   709                     break;

   710                 case opc_fstore_1:

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

   712                     break;

   713                 case opc_dstore_1:

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

   715                     break;

   716                 case opc_astore_2:

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

   718                     break;

   719                 case opc_istore_2:

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

   721                     break;

   722                 case opc_lstore_2:

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

   724                     break;

   725                 case opc_fstore_2:

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

   727                     break;

   728                 case opc_dstore_2:

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

   730                     break;

   731                 case opc_astore_3:

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

   733                     break;

   734                 case opc_istore_3:

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

   736                     break;

   737                 case opc_lstore_3:

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

   739                     break;

   740                 case opc_fstore_3:

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

   742                     break;

   743                 case opc_dstore_3:

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

   745                     break;

   746                 case opc_iadd:

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

   748                     break;

   749                 case opc_ladd:

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

   751                     break;

   752                 case opc_fadd:

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

   754                     break;

   755                 case opc_dadd:

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

   757                     break;

   758                 case opc_isub:

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

   760                     break;

   761                 case opc_lsub:

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

   763                     break;

   764                 case opc_fsub:

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

   766                     break;

   767                 case opc_dsub:

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

   769                     break;

   770                 case opc_imul:

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

   772                     break;

   773                 case opc_lmul:

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

   775                     break;

   776                 case opc_fmul:

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

   778                     break;

   779                 case opc_dmul:

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

   781                     break;

   782                 case opc_idiv:

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

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

   785                     break;

   786                 case opc_ldiv:

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

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

   789                     break;

   790                 case opc_fdiv:

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

   792                     break;

   793                 case opc_ddiv:

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

   795                     break;

   796                 case opc_irem:

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

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

   799                     break;

   800                 case opc_lrem:

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

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

   803                     break;

   804                 case opc_frem:

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

   806                     break;

   807                 case opc_drem:

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

   809                     break;

   810                 case opc_iand:

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

   812                     break;

   813                 case opc_land:

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

   815                     break;

   816                 case opc_ior:

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

   818                     break;

   819                 case opc_lor:

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

   821                     break;

   822                 case opc_ixor:

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

   824                     break;

   825                 case opc_lxor:

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

   827                     break;

   828                 case opc_ineg:

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

   830                     break;

   831                 case opc_lneg:

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

   833                     break;

   834                 case opc_fneg:

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

   836                     break;

   837                 case opc_dneg:

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

   839                     break;

   840                 case opc_ishl:

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

   842                     break;

   843                 case opc_lshl:

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

   845                     break;

   846                 case opc_ishr:

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

   848                     break;

   849                 case opc_lshr:

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

   851                     break;

   852                 case opc_iushr:

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

   854                     break;

   855                 case opc_lushr:

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

   857                     break;

   858                 case opc_iinc: {

   859                     ++i;

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

   861                                              : readUByte(byteCodes, i);

   862                     ++i;

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

   864                                             : byteCodes[i];

   865                     wide = false;

   866                     if (incrBy == 1) {

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

   868                     } else {

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

   870                              lmapper.getI(varIndx),

   871                              Integer.toString(incrBy));

   872                     }

   873                     break;

   874                 }

   875                 case opc_return:

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

   877                     break;

   878                 case opc_ireturn:

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

   880                     break;

   881                 case opc_lreturn:

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

   883                     break;

   884                 case opc_freturn:

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

   886                     break;

   887                 case opc_dreturn:

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

   889                     break;

   890                 case opc_areturn:

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

   892                     break;

   893                 case opc_i2l:

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

   895                     break;

   896                 case opc_i2f:

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

   898                     break;

   899                 case opc_i2d:

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

   901                     break;

   902                 case opc_l2i:

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

   904                     break;

   905                     // max int check?

   906                 case opc_l2f:

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

   908                     break;

   909                 case opc_l2d:

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

   911                     break;

   912                 case opc_f2d:

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

   914                          smapper.getF(0));

   915                     break;

   916                 case opc_d2f:

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

   918                          smapper.getD(0));

   919                     break;

   920                 case opc_f2i:

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

   922                          smapper.getF(0));

   923                     break;

   924                 case opc_f2l:

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

   926                          smapper.getF(0));

   927                     break;

   928                 case opc_d2i:

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

   930                          smapper.getD(0));

   931                     break;

   932                 case opc_d2l:

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

   934                     break;

   935                 case opc_i2b:

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

   937                     break;

   938                 case opc_i2c:

   939                 case opc_i2s:

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

   941                     break;

   942                 case opc_aconst_null:

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

   944                     break;

   945                 case opc_iconst_m1:

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

   947                     break;

   948                 case opc_iconst_0:

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

   950                     break;

   951                 case opc_dconst_0:

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

   953                     break;

   954                 case opc_lconst_0:

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

   956                     break;

   957                 case opc_fconst_0:

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

   959                     break;

   960                 case opc_iconst_1:

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

   962                     break;

   963                 case opc_lconst_1:

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

   965                     break;

   966                 case opc_fconst_1:

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

   968                     break;

   969                 case opc_dconst_1:

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

   971                     break;

   972                 case opc_iconst_2:

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

   974                     break;

   975                 case opc_fconst_2:

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

   977                     break;

   978                 case opc_iconst_3:

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

   980                     break;

   981                 case opc_iconst_4:

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

   983                     break;

   984                 case opc_iconst_5:

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

   986                     break;

   987                 case opc_ldc: {

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

   989                     String v = encodeConstant(indx);

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

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

   992                     break;

   993                 }

   994                 case opc_ldc_w:

   995                 case opc_ldc2_w: {

   996                     int indx = readUShortArg(byteCodes, i);

   997                     i += 2;

   998                     String v = encodeConstant(indx);

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

  1000                     if (type == VarType.LONG) {

  1001                         final Long lv = new Long(v);

  1002                         final int low = (int)(lv.longValue() & 0xFFFFFFFF);

  1003                         final int hi = (int)(lv.longValue() >> 32);

  1004                         if (hi == 0) {

  1005                             smapper.assign(this, VarType.LONG, "0x" + Integer.toHexString(low));

  1006                         } else {

  1007                             smapper.assign(this, VarType.LONG,

  1008                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

  1009                                     Integer.toHexString(low) + ")"

  1010                             );

  1011                         }

  1012                     } else {

  1013                         smapper.assign(this, type, v);

  1014                     }

  1015                     break;

  1016                 }

  1017                 case opc_lcmp:

  1018                     smapper.replace(this, VarType.INTEGER, "(@2).compare64(@1)", smapper.popL(), smapper.getL(0));

  1019                     break;

  1020                 case opc_fcmpl:

  1021                 case opc_fcmpg:

  1022                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1023                          smapper.popF(), smapper.popF(), smapper.pushI());

  1024                     break;

  1025                 case opc_dcmpl:

  1026                 case opc_dcmpg:

  1027                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1028                          smapper.popD(), smapper.popD(), smapper.pushI());

  1029                     break;

  1030                 case opc_if_acmpeq:

  1031                     i = generateIf(smapper, flow, byteCodes, i, smapper.popA(), smapper.popA(),

  1032                                    "===", topMostLabel);

  1033                     break;

  1034                 case opc_if_acmpne:

  1035                     i = generateIf(smapper, flow, byteCodes, i, smapper.popA(), smapper.popA(),

  1036                                    "!==", topMostLabel);

  1037                     break;

  1038                 case opc_if_icmpeq:

  1039                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1040                                    "==", topMostLabel);

  1041                     break;

  1042                 case opc_ifeq: {

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

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

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

  1046                     i += 2;

  1047                     break;

  1048                 }

  1049                 case opc_ifne: {

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

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

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

  1053                     i += 2;

  1054                     break;

  1055                 }

  1056                 case opc_iflt: {

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

  1058                     emitIf(smapper, flow, this, "if ((@1) < 0) ",

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

  1060                     i += 2;

  1061                     break;

  1062                 }

  1063                 case opc_ifle: {

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

  1065                     emitIf(smapper, flow, this, "if ((@1) <= 0) ",

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

  1067                     i += 2;

  1068                     break;

  1069                 }

  1070                 case opc_ifgt: {

  1071                     int indx = i + readShortArg(byteCodes, i);

  1072                     emitIf(smapper, flow, this, "if ((@1) > 0) ",

  1073                          smapper.popI(), i, indx, topMostLabel);

  1074                     i += 2;

  1075                     break;

  1076                 }

  1077                 case opc_ifge: {

  1078                     int indx = i + readShortArg(byteCodes, i);

  1079                     emitIf(smapper, flow, this, "if ((@1) >= 0) ",

  1080                          smapper.popI(), i, indx, topMostLabel);

  1081                     i += 2;

  1082                     break;

  1083                 }

  1084                 case opc_ifnonnull: {

  1085                     int indx = i + readShortArg(byteCodes, i);

  1086                     emitIf(smapper, flow, this, "if ((@1) !== null) ",

  1087                          smapper.popA(), i, indx, topMostLabel);

  1088                     i += 2;

  1089                     break;

  1090                 }

  1091                 case opc_ifnull: {

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

  1093                     emitIf(smapper, flow, this, "if ((@1) === null) ",

  1094                          smapper.popA(), i, indx, topMostLabel);

  1095                     i += 2;

  1096                     break;

  1097                 }

  1098                 case opc_if_icmpne:

  1099                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1100                                    "!=", topMostLabel);

  1101                     break;

  1102                 case opc_if_icmplt:

  1103                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1104                                    "<", topMostLabel);

  1105                     break;

  1106                 case opc_if_icmple:

  1107                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1108                                    "<=", topMostLabel);

  1109                     break;

  1110                 case opc_if_icmpgt:

  1111                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1112                                    ">", topMostLabel);

  1113                     break;

  1114                 case opc_if_icmpge:

  1115                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1116                                    ">=", topMostLabel);

  1117                     break;

  1118                 case opc_goto: {

  1119                     smapper.flush(this);

  1120                     if (flow == null) {

  1121                         int indx = i + readShortArg(byteCodes, i);

  1122                         goTo(this, flow, i, indx, topMostLabel);

  1123                     }

  1124                     i += 2;

  1125                     break;

  1126                 }

  1127                 case opc_lookupswitch: {

  1128                     i = generateLookupSwitch(i, byteCodes, smapper, flow, topMostLabel);

  1129                     break;

  1130                 }

  1131                 case opc_tableswitch: {

  1132                     i = generateTableSwitch(i, byteCodes, smapper, flow, topMostLabel);

  1133                     break;

  1134                 }

  1135                 case opc_invokeinterface: {

  1136                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1137                     break;

  1138                 }

  1139                 case opc_invokevirtual:

  1140                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1141                     break;

  1142                 case opc_invokespecial:

  1143                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1144                     break;

  1145                 case opc_invokestatic:

  1146                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1147                     break;

  1148                 case opc_invokedynamic: {

  1149                     int indx = readUShortArg(byteCodes, i);

  1150                     println("invoke dynamic: " + indx);

  1151                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1152                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1153                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1154                     println("  type: " + methodHandle.cpx1);

  1155                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1156                     String mcn = mangleClassName(mi[0]);

  1157                     char[] returnType = {'V'};

  1158                     StringBuilder cnt = new StringBuilder();

  1159                     String mn = findMethodName(mi, cnt, returnType);

  1160                     StringBuilder sb = new StringBuilder();

  1161                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1162                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1163                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1164                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1165                     sb.append("  mn   : ").append(mn).append("\n");

  1166                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1167                     throw new IOException(sb.toString());

  1168                     /*

  1169                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1170                     String type = jc.StringValue(nameAndType.cpx2);

  1171                     String object = accessClass(mcn) + "(false)";

  1172                     if (mn.startsWith("cons_")) {

  1173                         object += ".constructor";

  1174                     }

  1175                     append("var metHan = ");

  1176                     append(accessStaticMethod(object, mn, mi));

  1177                     append('(');

  1178                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1179                     append(lookup);

  1180                     append(", '").append(mi[1]).append("', ");

  1181                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1182                     append(methodType).append("'").append(type).append("', null)");

  1183 //                    if (numArguments > 0) {

  1184 //                        append(vars[0]);

  1185 //                        for (int j = 1; j < numArguments; ++j) {

  1186 //                            append(", ");

  1187 //                            append(vars[j]);

  1188 //                        }

  1189 //                    }

  1190                     append(");");

  1191                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1192                     i += 4;

  1193                     break;

  1194                     */

  1195                 }

  1196                 case opc_new: {

  1197                     int indx = readUShortArg(byteCodes, i);

  1198                     String ci = jc.getClassName(indx);

  1199                     emit(smapper, this, "var @1 = new @2;",

  1200                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1201                     addReference(ci);

  1202                     i += 2;

  1203                     break;

  1204                 }

  1205                 case opc_newarray:

  1206                     int atype = readUByte(byteCodes, ++i);

  1207                     generateNewArray(atype, smapper);

  1208                     break;

  1209                 case opc_anewarray: {

  1210                     int type = readUShortArg(byteCodes, i);

  1211                     i += 2;

  1212                     generateANewArray(type, smapper);

  1213                     break;

  1214                 }

  1215                 case opc_multianewarray: {

  1216                     int type = readUShortArg(byteCodes, i);

  1217                     i += 2;

  1218                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1219                     break;

  1220                 }

  1221                 case opc_arraylength:

  1222                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1223                     break;

  1224                 case opc_lastore:

  1225                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1226                          smapper.popL(), smapper.popI(), smapper.popA());

  1227                     break;

  1228                 case opc_fastore:

  1229                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1230                          smapper.popF(), smapper.popI(), smapper.popA());

  1231                     break;

  1232                 case opc_dastore:

  1233                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1234                          smapper.popD(), smapper.popI(), smapper.popA());

  1235                     break;

  1236                 case opc_aastore:

  1237                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1238                          smapper.popA(), smapper.popI(), smapper.popA());

  1239                     break;

  1240                 case opc_iastore:

  1241                 case opc_bastore:

  1242                 case opc_castore:

  1243                 case opc_sastore:

  1244                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1245                          smapper.popI(), smapper.popI(), smapper.popA());

  1246                     break;

  1247                 case opc_laload:

  1248                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1249                          smapper.popI(), smapper.getA(0));

  1250                     break;

  1251                 case opc_faload:

  1252                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1253                          smapper.popI(), smapper.getA(0));

  1254                     break;

  1255                 case opc_daload:

  1256                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1257                          smapper.popI(), smapper.getA(0));

  1258                     break;

  1259                 case opc_aaload:

  1260                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1261                          smapper.popI(), smapper.getA(0));

  1262                     break;

  1263                 case opc_iaload:

  1264                 case opc_baload:

  1265                 case opc_caload:

  1266                 case opc_saload:

  1267                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1268                          smapper.popI(), smapper.getA(0));

  1269                     break;

  1270                 case opc_pop:

  1271                 case opc_pop2:

  1272                     smapper.pop(1);

  1273                     debug("/* pop */");

  1274                     break;

  1275                 case opc_dup: {

  1276                     final Variable v = smapper.get(0);

  1277                     if (smapper.isDirty()) {

  1278                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1279                     } else {

  1280                         smapper.assign(this, v.getType(), v);

  1281                     }

  1282                     break;

  1283                 }

  1284                 case opc_dup2: {

  1285                     final Variable vi1 = smapper.get(0);

  1287                     if (vi1.isCategory2()) {

  1288                         emit(smapper, this, "var @1 = @2;",

  1289                              smapper.pushT(vi1.getType()), vi1);

  1290                     } else {

  1291                         final Variable vi2 = smapper.get(1);

  1292                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1293                              smapper.pushT(vi2.getType()), vi2,

  1294                              smapper.pushT(vi1.getType()), vi1);

  1295                     }

  1296                     break;

  1297                 }

  1298                 case opc_dup_x1: {

  1299                     final Variable vi1 = smapper.pop(this);

  1300                     final Variable vi2 = smapper.pop(this);

  1301                     final Variable vo3 = smapper.pushT(vi1.getType());

  1302                     final Variable vo2 = smapper.pushT(vi2.getType());

  1303                     final Variable vo1 = smapper.pushT(vi1.getType());

  1305                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1306                          vo1, vi1, vo2, vi2, vo3, vo1);

  1307                     break;

  1308                 }

  1309                 case opc_dup2_x1: {

  1310                     final Variable vi1 = smapper.pop(this);

  1311                     final Variable vi2 = smapper.pop(this);

  1313                     if (vi1.isCategory2()) {

  1314                         final Variable vo3 = smapper.pushT(vi1.getType());

  1315                         final Variable vo2 = smapper.pushT(vi2.getType());

  1316                         final Variable vo1 = smapper.pushT(vi1.getType());

  1318                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1319                              vo1, vi1, vo2, vi2, vo3, vo1);

  1320                     } else {

  1321                         final Variable vi3 = smapper.pop(this);

  1322                         final Variable vo5 = smapper.pushT(vi2.getType());

  1323                         final Variable vo4 = smapper.pushT(vi1.getType());

  1324                         final Variable vo3 = smapper.pushT(vi3.getType());

  1325                         final Variable vo2 = smapper.pushT(vi2.getType());

  1326                         final Variable vo1 = smapper.pushT(vi1.getType());

  1328                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1329                              vo1, vi1, vo2, vi2, vo3, vi3);

  1330                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1331                              vo4, vo1, vo5, vo2);

  1332                     }

  1333                     break;

  1334                 }

  1335                 case opc_dup_x2: {

  1336                     final Variable vi1 = smapper.pop(this);

  1337                     final Variable vi2 = smapper.pop(this);

  1339                     if (vi2.isCategory2()) {

  1340                         final Variable vo3 = smapper.pushT(vi1.getType());

  1341                         final Variable vo2 = smapper.pushT(vi2.getType());

  1342                         final Variable vo1 = smapper.pushT(vi1.getType());

  1344                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1345                              vo1, vi1, vo2, vi2, vo3, vo1);

  1346                     } else {

  1347                         final Variable vi3 = smapper.pop(this);

  1348                         final Variable vo4 = smapper.pushT(vi1.getType());

  1349                         final Variable vo3 = smapper.pushT(vi3.getType());

  1350                         final Variable vo2 = smapper.pushT(vi2.getType());

  1351                         final Variable vo1 = smapper.pushT(vi1.getType());

  1353                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1354                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1355                     }

  1356                     break;

  1357                 }

  1358                 case opc_dup2_x2: {

  1359                     final Variable vi1 = smapper.pop(this);

  1360                     final Variable vi2 = smapper.pop(this);

  1362                     if (vi1.isCategory2()) {

  1363                         if (vi2.isCategory2()) {

  1364                             final Variable vo3 = smapper.pushT(vi1.getType());

  1365                             final Variable vo2 = smapper.pushT(vi2.getType());

  1366                             final Variable vo1 = smapper.pushT(vi1.getType());

  1368                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1369                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1370                         } else {

  1371                             final Variable vi3 = smapper.pop(this);

  1372                             final Variable vo4 = smapper.pushT(vi1.getType());

  1373                             final Variable vo3 = smapper.pushT(vi3.getType());

  1374                             final Variable vo2 = smapper.pushT(vi2.getType());

  1375                             final Variable vo1 = smapper.pushT(vi1.getType());

  1377                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1378                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1379                         }

  1380                     } else {

  1381                         final Variable vi3 = smapper.pop(this);

  1383                         if (vi3.isCategory2()) {

  1384                             final Variable vo5 = smapper.pushT(vi2.getType());

  1385                             final Variable vo4 = smapper.pushT(vi1.getType());

  1386                             final Variable vo3 = smapper.pushT(vi3.getType());

  1387                             final Variable vo2 = smapper.pushT(vi2.getType());

  1388                             final Variable vo1 = smapper.pushT(vi1.getType());

  1390                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1391                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1392                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1393                                  vo4, vo1, vo5, vo2);

  1394                         } else {

  1395                             final Variable vi4 = smapper.pop(this);

  1396                             final Variable vo6 = smapper.pushT(vi2.getType());

  1397                             final Variable vo5 = smapper.pushT(vi1.getType());

  1398                             final Variable vo4 = smapper.pushT(vi4.getType());

  1399                             final Variable vo3 = smapper.pushT(vi3.getType());

  1400                             final Variable vo2 = smapper.pushT(vi2.getType());

  1401                             final Variable vo1 = smapper.pushT(vi1.getType());

  1403                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1404                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1405                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1406                                  vo5, vo1, vo6, vo2);

  1407                         }

  1408                     }

  1409                     break;

  1410                 }

  1411                 case opc_swap: {

  1412                     final Variable vi1 = smapper.get(0);

  1413                     final Variable vi2 = smapper.get(1);

  1415                     if (vi1.getType() == vi2.getType()) {

  1416                         final Variable tmp = smapper.pushT(vi1.getType());

  1418                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1419                              tmp, vi1, vi2);

  1420                         smapper.pop(1);

  1421                     } else {

  1422                         smapper.pop(2);

  1423                         smapper.pushT(vi1.getType());

  1424                         smapper.pushT(vi2.getType());

  1425                     }

  1426                     break;

  1427                 }

  1428                 case opc_bipush:

  1429                     smapper.assign(this, VarType.INTEGER,

  1430                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1431                     break;

  1432                 case opc_sipush:

  1433                     smapper.assign(this, VarType.INTEGER,

  1434                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1435                     );

  1436                     i += 2;

  1437                     break;

  1438                 case opc_getfield: {

  1439                     int indx = readUShortArg(byteCodes, i);

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

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

  1442                     final String mangleClass = mangleClassName(fi[0]);

  1443                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1444                     smapper.replace(this, type, "@2.call(@1)",

  1445                          smapper.getA(0),

  1446                          accessField(mangleClassAccess,

  1447                                      "_" + fi[1], fi)

  1448                     );

  1449                     i += 2;

  1450                     addReference(fi[0]);

  1451                     break;

  1452                 }

  1453                 case opc_putfield: {

  1454                     int indx = readUShortArg(byteCodes, i);

  1455                     String[] fi = jc.getFieldInfoName(indx);

  1456                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1457                     final String mangleClass = mangleClassName(fi[0]);

  1458                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1459                     emit(smapper, this, "@3.call(@2, @1);",

  1460                          smapper.popT(type),

  1461                          smapper.popA(),

  1462                          accessField(mangleClassAccess,

  1463                                      "_" + fi[1], fi));

  1464                     i += 2;

  1465                     addReference(fi[0]);

  1466                     break;

  1467                 }

  1468                 case opc_getstatic: {

  1469                     int indx = readUShortArg(byteCodes, i);

  1470                     String[] fi = jc.getFieldInfoName(indx);

  1471                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1472                     String ac = accessClassFalse(mangleClassName(fi[0]));

  1473                     String af = accessField(ac, "_" + fi[1], fi);

  1474                     smapper.assign(this, type, af + "()");

  1475                     i += 2;

  1476                     addReference(fi[0]);

  1477                     break;

  1478                 }

  1479                 case opc_putstatic: {

  1480                     int indx = readUShortArg(byteCodes, i);

  1481                     String[] fi = jc.getFieldInfoName(indx);

  1482                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1483                     emit(smapper, this, "@1._@2(@3);",

  1484                          accessClassFalse(mangleClassName(fi[0])), fi[1],

  1485                          smapper.popT(type));

  1486                     i += 2;

  1487                     addReference(fi[0]);

  1488                     break;

  1489                 }

  1490                 case opc_checkcast: {

  1491                     int indx = readUShortArg(byteCodes, i);

  1492                     generateCheckcast(indx, smapper);

  1493                     i += 2;

  1494                     break;

  1495                 }

  1496                 case opc_instanceof: {

  1497                     int indx = readUShortArg(byteCodes, i);

  1498                     generateInstanceOf(indx, smapper);

  1499                     i += 2;

  1500                     break;

  1501                 }

  1502                 case opc_athrow: {

  1503                     final CharSequence v = smapper.popA();

  1504                     smapper.clear();

  1506                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1507                          smapper.pushA(), v);

  1508                     break;

  1509                 }

  1511                 case opc_monitorenter: {

  1512                     debug("/* monitor enter */");

  1513                     smapper.popA();

  1514                     break;

  1515                 }

  1517                 case opc_monitorexit: {

  1518                     debug("/* monitor exit */");

  1519                     smapper.popA();

  1520                     break;

  1521                 }

  1523                 case opc_wide:

  1524                     wide = true;

  1525                     break;

  1527                 default: {

  1528                     wide = false;

  1529                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1530                          Integer.toString(c));

  1531                 }

  1532             }

  1533             if (debug(" //")) {

  1534                 generateByteCodeComment(prev, i, byteCodes);

  1535             }

  1536             if (outChanged) {

  1537                 append("\n");

  1538             }

  1539         }

  1540         if (previousTrap != null) {

  1541             generateCatch(previousTrap, flow, byteCodes.length, topMostLabel);

  1542         }

  1543         if (didBranches) {

  1544             append("\n    }\n");

  1545         }

  1546         while (openBraces-- > 0) {

  1547             append('}');

  1548         }

  1549         if (defineProp) {

  1550             append("\n}});");

  1551         } else {

  1552             append("\n};");

  1553         }

  1554         return defineProp;

  1555     }

  1557     private int generateIf(StackMapper mapper, Flow flow, byte[] byteCodes, int i, final CharSequence v2, final CharSequence v1, final String test, int topMostLabel) throws IOException {

  1558         mapper.flush(this);

  1559         int indx = i + readShortArg(byteCodes, i);

  1560         append("if ((").append(v1)

  1561            .append(") ").append(test).append(" (")

  1562            .append(v2).append(")) ");

  1563         goTo(this, flow, i, indx, topMostLabel);

  1564         return i + 2;

  1565     }

  1567     private int readInt4(byte[] byteCodes, int offset) {

  1568         final int d = byteCodes[offset + 0] << 24;

  1569         final int c = byteCodes[offset + 1] << 16;

  1570         final int b = byteCodes[offset + 2] << 8;

  1571         final int a = byteCodes[offset + 3];

  1572         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1573     }

  1574     private static int readUByte(byte[] byteCodes, int offset) {

  1575         return byteCodes[offset] & 0xff;

  1576     }

  1578     private static int readUShort(byte[] byteCodes, int offset) {

  1579         return ((byteCodes[offset] & 0xff) << 8)

  1580                     | (byteCodes[offset + 1] & 0xff);

  1581     }

  1582     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1583         return readUShort(byteCodes, offsetInstruction + 1);

  1584     }

  1586     private static int readShort(byte[] byteCodes, int offset) {

  1587         int signed = byteCodes[offset];

  1588         byte b0 = (byte)signed;

  1589         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1590     }

  1591     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1592         return readShort(byteCodes, offsetInstruction + 1);

  1593     }

  1595     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1596         int i = 0;

  1597         Boolean count = null;

  1598         boolean array = false;

  1599         sig.append("__");

  1600         int firstPos = sig.length();

  1601         while (i < descriptor.length()) {

  1602             char ch = descriptor.charAt(i++);

  1603             switch (ch) {

  1604                 case '(':

  1605                     count = true;

  1606                     continue;

  1607                 case ')':

  1608                     count = false;

  1609                     continue;

  1610                 case 'B':

  1611                 case 'C':

  1612                 case 'D':

  1613                 case 'F':

  1614                 case 'I':

  1615                 case 'J':

  1616                 case 'S':

  1617                 case 'Z':

  1618                     if (count) {

  1619                         if (array) {

  1620                             sig.append("_3");

  1621                         }

  1622                         sig.append(ch);

  1623                         if (ch == 'J' || ch == 'D') {

  1624                             cnt.append('1');

  1625                         } else {

  1626                             cnt.append('0');

  1627                         }

  1628                     } else {

  1629                         sig.insert(firstPos, ch);

  1630                         if (array) {

  1631                             returnType[0] = '[';

  1632                             sig.insert(firstPos, "_3");

  1633                         } else {

  1634                             returnType[0] = ch;

  1635                         }

  1636                     }

  1637                     array = false;

  1638                     continue;

  1639                 case 'V':

  1640                     assert !count;

  1641                     returnType[0] = 'V';

  1642                     sig.insert(firstPos, 'V');

  1643                     continue;

  1644                 case 'L':

  1645                     int next = descriptor.indexOf(';', i);

  1646                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1647                     if (count) {

  1648                         if (array) {

  1649                             sig.append("_3");

  1650                         }

  1651                         sig.append(realSig);

  1652                         cnt.append('0');

  1653                     } else {

  1654                         sig.insert(firstPos, realSig);

  1655                         if (array) {

  1656                             sig.insert(firstPos, "_3");

  1657                         }

  1658                         returnType[0] = 'L';

  1659                     }

  1660                     i = next + 1;

  1661                     array = false;

  1662                     continue;

  1663                 case '[':

  1664                     array = true;

  1665                     continue;

  1666                 default:

  1667                     throw new IllegalStateException("Invalid char: " + ch);

  1668             }

  1669         }

  1670     }

  1672     static String mangleSig(String sig) {

  1673         return mangleSig(sig, 0, sig.length());

  1674     }

  1676     private static String mangleMethodName(String name) {

  1677         StringBuilder sb = new StringBuilder(name.length() * 2);

  1678         int last = name.length();

  1679         for (int i = 0; i < last; i++) {

  1680             final char ch = name.charAt(i);

  1681             switch (ch) {

  1682                 case '_': sb.append("_1"); break;

  1683                 default: sb.append(ch); break;

  1684             }

  1685         }

  1686         return sb.toString();

  1687     }

  1688     private static String mangleSig(String txt, int first, int last) {

  1689         StringBuilder sb = new StringBuilder((last - first) * 2);

  1690         for (int i = first; i < last; i++) {

  1691             final char ch = txt.charAt(i);

  1692             switch (ch) {

  1693                 case '/': sb.append('_'); break;

  1694                 case '_': sb.append("_1"); break;

  1695                 case ';': sb.append("_2"); break;

  1696                 case '[': sb.append("_3"); break;

  1697                 default:

  1698                     if (Character.isJavaIdentifierPart(ch)) {

  1699                         sb.append(ch);

  1700                     } else {

  1701                         sb.append("_0");

  1702                         String hex = Integer.toHexString(ch).toLowerCase();

  1703                         for (int m = hex.length(); m < 4; m++) {

  1704                             sb.append("0");

  1705                         }

  1706                         sb.append(hex);

  1707                     }

  1708                 break;

  1709             }

  1710         }

  1711         return sb.toString();

  1712     }

  1714     private static String mangleClassName(String name) {

  1715         return mangleSig(name);

  1716     }

  1718     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1719         StringBuilder name = new StringBuilder();

  1720         if ("<init>".equals(m.getName())) { // NOI18N

  1721             name.append("cons"); // NOI18N

  1722         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1723             name.append("class"); // NOI18N

  1724         } else {

  1725             name.append(mangleMethodName(m.getName()));

  1726         }

  1728         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1729         return name.toString();

  1730     }

  1732     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1733         StringBuilder name = new StringBuilder();

  1734         String descr = mi[2];//mi.getDescriptor();

  1735         String nm= mi[1];

  1736         if ("<init>".equals(nm)) { // NOI18N

  1737             name.append("cons"); // NOI18N

  1738         } else {

  1739             name.append(mangleMethodName(nm));

  1740         }

  1741         countArgs(descr, returnType, name, cnt);

  1742         return name.toString();

  1743     }

  1745     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1746     throws IOException {

  1747         int methodIndex = readUShortArg(byteCodes, i);

  1748         String[] mi = jc.getFieldInfoName(methodIndex);

  1749         char[] returnType = { 'V' };

  1750         StringBuilder cnt = new StringBuilder();

  1751         String mn = findMethodName(mi, cnt, returnType);

  1753         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1754         final CharSequence[] vars = new CharSequence[numArguments];

  1756         for (int j = numArguments - 1; j >= 0; --j) {

  1757             vars[j] = mapper.popValue();

  1758         }

  1760         if ((

  1761             "newUpdater__Ljava_util_concurrent_atomic_AtomicIntegerFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1762             && "java/util/concurrent/atomic/AtomicIntegerFieldUpdater".equals(mi[0])

  1763         ) || (

  1764             "newUpdater__Ljava_util_concurrent_atomic_AtomicLongFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1765             && "java/util/concurrent/atomic/AtomicLongFieldUpdater".equals(mi[0])

  1766         )) {

  1767             if (vars[1] instanceof String) {

  1768                 String field = vars[1].toString();

  1769                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1770                     vars[1] = "c._" + field.substring(1, field.length() - 1);

  1771                 }

  1772             }

  1773         }

  1774         if (

  1775             "newUpdater__Ljava_util_concurrent_atomic_AtomicReferenceFieldUpdater_2Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1776             && "java/util/concurrent/atomic/AtomicReferenceFieldUpdater".equals(mi[0])

  1777         ) {

  1778             if (vars[1] instanceof String) {

  1779                 String field = vars[2].toString();

  1780                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1781                     vars[2] = "c._" + field.substring(1, field.length() - 1);

  1782                 }

  1783             }

  1784         }

  1786         if (returnType[0] != 'V') {

  1787             mapper.flush(this);

  1788             append("var ")

  1789                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1790                .append(" = ");

  1791         }

  1793         final String in = mi[0];

  1794         String mcn;

  1795         if (callbacks && (

  1796             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1797             in.equals("org/netbeans/html/boot/spi/Fn")

  1798         )) {

  1799             mcn = "java_lang_Class";

  1800         } else {

  1801             mcn = mangleClassName(in);

  1802         }

  1803         String object = accessClassFalse(mcn);

  1804         if (mn.startsWith("cons_")) {

  1805             object += ".constructor";

  1806         }

  1807         append(accessStaticMethod(object, mn, mi));

  1808         if (isStatic) {

  1809             append('(');

  1810         } else {

  1811             append(".call(");

  1812         }

  1813         if (numArguments > 0) {

  1814             append(vars[0]);

  1815             for (int j = 1; j < numArguments; ++j) {

  1816                 append(", ");

  1817                 append(vars[j]);

  1818             }

  1819         }

  1820         append(");");

  1821         i += 2;

  1822         addReference(in);

  1823         return i;

  1824     }

  1825     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1826     throws IOException {

  1827         int methodIndex = readUShortArg(byteCodes, i);

  1828         String[] mi = jc.getFieldInfoName(methodIndex);

  1829         char[] returnType = { 'V' };

  1830         StringBuilder cnt = new StringBuilder();

  1831         String mn = findMethodName(mi, cnt, returnType);

  1833         final int numArguments = cnt.length() + 1;

  1834         final CharSequence[] vars =  new CharSequence[numArguments];

  1836         for (int j = numArguments - 1; j >= 0; --j) {

  1837             vars[j] = mapper.popValue();

  1838         }

  1840         if (returnType[0] != 'V') {

  1841             mapper.flush(this);

  1842             append("var ")

  1843                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1844                .append(" = ");

  1845         }

  1847         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1848         String sep = "";

  1849         for (int j = 1; j < numArguments; ++j) {

  1850             append(sep);

  1851             append(vars[j]);

  1852             sep = ", ";

  1853         }

  1854         append(");");

  1855         i += 2;

  1856         return i;

  1857     }

  1859     private void addReference(String cn) throws IOException {

  1860         if (requireReference(cn)) {

  1861             debug(" /* needs " + cn + " */");

  1862         }

  1863     }

  1865     private void outType(String d, StringBuilder out) {

  1866         int arr = 0;

  1867         while (d.charAt(0) == '[') {

  1868             out.append('A');

  1869             d = d.substring(1);

  1870         }

  1871         if (d.charAt(0) == 'L') {

  1872             assert d.charAt(d.length() - 1) == ';';

  1873             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1874         } else {

  1875             out.append(d);

  1876         }

  1877     }

  1879     private String encodeConstant(int entryIndex) throws IOException {

  1880         String[] classRef = { null };

  1881         String s = jc.stringValue(entryIndex, classRef);

  1882         if (classRef[0] != null) {

  1883             if (classRef[0].startsWith("[")) {

  1884                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1885             } else {

  1886                 addReference(classRef[0]);

  1887                 s = accessClassFalse(mangleClassName(s)) + ".constructor.$class";

  1888             }

  1889         }

  1890         return s;

  1891     }

  1893     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1894         byte[] arr = m.findAnnotationData(true);

  1895         if (arr == null) {

  1896             return null;

  1897         }

  1898         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1899         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1900         class P extends AnnotationParser {

  1901             public P() {

  1902                 super(false, true);

  1903             }

  1905             int cnt;

  1906             String[] args = new String[30];

  1907             String body;

  1908             boolean javacall;

  1909             boolean html4j;

  1911             @Override

  1912             protected void visitAttr(String type, String attr, String at, String value) {

  1913                 if (type.equals(jvmType)) {

  1914                     if ("body".equals(attr)) {

  1915                         body = value;

  1916                     } else if ("args".equals(attr)) {

  1917                         args[cnt++] = value;

  1918                     } else {

  1919                         throw new IllegalArgumentException(attr);

  1920                     }

  1921                 }

  1922                 if (type.equals(htmlType)) {

  1923                     html4j = true;

  1924                     if ("body".equals(attr)) {

  1925                         body = value;

  1926                     } else if ("args".equals(attr)) {

  1927                         args[cnt++] = value;

  1928                     } else if ("javacall".equals(attr)) {

  1929                         javacall = "1".equals(value);

  1930                     } else if ("wait4js".equals(attr)) {

  1931                         // ignore, we always invoke synchronously

  1932                     } else {

  1933                         throw new IllegalArgumentException(attr);

  1934                     }

  1935                 }

  1936             }

  1937         }

  1938         P p = new P();

  1939         p.parse(arr, jc);

  1940         if (p.body == null) {

  1941             return null;

  1942         }

  1943         StringBuilder cnt = new StringBuilder();

  1944         final String mn = findMethodName(m, cnt);

  1945         append("m = ").append(destObject).append(".").append(mn);

  1946         append(" = function(");

  1947         String space = "";

  1948         int index = 0;

  1949         StringBuilder toValue = new StringBuilder();

  1950         for (int i = 0; i < cnt.length(); i++) {

  1951             append(space);

  1952             space = outputArg(this, p.args, index);

  1953             if (p.html4j && space.length() > 0) {

  1954                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1955                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1956                     append(p.args[index]).append(");");

  1957             }

  1958             index++;

  1959         }

  1960         append(") {").append("\n");

  1961         append(toValue.toString());

  1962         if (p.javacall) {

  1963             int lastSlash = jc.getClassName().lastIndexOf('/');

  1964             final String pkg = jc.getClassName().substring(0, lastSlash);

  1965             append(mangleCallbacks(pkg, p.body));

  1966             requireReference(pkg + "/$JsCallbacks$");

  1967         } else {

  1968             append(p.body);

  1969         }

  1970         append("\n}\n");

  1971         return mn;

  1972     }

  1974     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1975         StringBuilder sb = new StringBuilder();

  1976         int pos = 0;

  1977         for (;;) {

  1978             int next = body.indexOf(".@", pos);

  1979             if (next == -1) {

  1980                 sb.append(body.substring(pos));

  1981                 body = sb.toString();

  1982                 break;

  1983             }

  1984             int ident = next;

  1985             while (ident > 0) {

  1986                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1987                     ident++;

  1988                     break;

  1989                 }

  1990             }

  1991             String refId = body.substring(ident, next);

  1993             sb.append(body.substring(pos, ident));

  1995             int sigBeg = body.indexOf('(', next);

  1996             int sigEnd = body.indexOf(')', sigBeg);

  1997             int colon4 = body.indexOf("::", next);

  1998             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1999                 throw new IllegalStateException("Malformed body " + body);

  2000             }

  2001             String fqn = body.substring(next + 2, colon4);

  2002             String method = body.substring(colon4 + 2, sigBeg);

  2003             String params = body.substring(sigBeg, sigEnd + 1);

  2005             int paramBeg = body.indexOf('(', sigEnd + 1);

  2007             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  2008             sb.append(mangleJsCallbacks(fqn, method, params, false));

  2009             sb.append("(").append(refId);

  2010             if (body.charAt(paramBeg + 1) != ')') {

  2011                 sb.append(",");

  2012             }

  2013             pos = paramBeg + 1;

  2014         }

  2015         sb = null;

  2016         pos = 0;

  2017         for (;;) {

  2018             int next = body.indexOf("@", pos);

  2019             if (next == -1) {

  2020                 if (sb == null) {

  2021                     return body;

  2022                 }

  2023                 sb.append(body.substring(pos));

  2024                 return sb;

  2025             }

  2026             if (sb == null) {

  2027                 sb = new StringBuilder();

  2028             }

  2030             sb.append(body.substring(pos, next));

  2032             int sigBeg = body.indexOf('(', next);

  2033             int sigEnd = body.indexOf(')', sigBeg);

  2034             int colon4 = body.indexOf("::", next);

  2035             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2036                 throw new IllegalStateException("Malformed body " + body);

  2037             }

  2038             String fqn = body.substring(next + 1, colon4);

  2039             String method = body.substring(colon4 + 2, sigBeg);

  2040             String params = body.substring(sigBeg, sigEnd + 1);

  2042             int paramBeg = body.indexOf('(', sigEnd + 1);

  2044             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  2045             sb.append(mangleJsCallbacks(fqn, method, params, true));

  2046             sb.append("(");

  2047             pos = paramBeg + 1;

  2048         }

  2049     }

  2051     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  2052         if (params.startsWith("(")) {

  2053             params = params.substring(1);

  2054         }

  2055         if (params.endsWith(")")) {

  2056             params = params.substring(0, params.length() - 1);

  2057         }

  2058         StringBuilder sb = new StringBuilder();

  2059         final String fqnu = fqn.replace('.', '_');

  2060         final String rfqn = mangleClassName(fqnu);

  2061         final String rm = mangleMethodName(method);

  2062         final String srp;

  2063         {

  2064             StringBuilder pb = new StringBuilder();

  2065             int len = params.length();

  2066             int indx = 0;

  2067             while (indx < len) {

  2068                 char ch = params.charAt(indx);

  2069                 if (ch == '[' || ch == 'L') {

  2070                     int column = params.indexOf(';', indx) + 1;

  2071                     if (column > indx) {

  2072                         String real = params.substring(indx, column);

  2073                         if ("Ljava/lang/String;".equals(real)) {

  2074                             pb.append("Ljava/lang/String;");

  2075                             indx = column;

  2076                             continue;

  2077                         }

  2078                     }

  2079                     pb.append("Ljava/lang/Object;");

  2080                     indx = column;

  2081                 } else {

  2082                     pb.append(ch);

  2083                     indx++;

  2084                 }

  2085             }

  2086             srp = mangleSig(pb.toString());

  2087         }

  2088         final String rp = mangleSig(params);

  2089         final String mrp = mangleMethodName(rp);

  2090         sb.append(rfqn).append("$").append(rm).

  2091             append('$').append(mrp).append("__Ljava_lang_Object_2");

  2092         if (!isStatic) {

  2093             sb.append('L').append(fqnu).append("_2");

  2094         }

  2095         sb.append(srp);

  2096         return sb.toString();

  2097     }

  2099     private static String className(ClassData jc) {

  2100         //return jc.getName().getInternalName().replace('/', '_');

  2101         return mangleClassName(jc.getClassName());

  2102     }

  2104     private static String[] findAnnotation(

  2105         byte[] arr, ClassData cd, final String className,

  2106         final String... attrNames

  2107     ) throws IOException {

  2108         if (arr == null) {

  2109             return null;

  2110         }

  2111         final String[] values = new String[attrNames.length];

  2112         final boolean[] found = { false };

  2113         final String jvmType = "L" + className.replace('.', '/') + ";";

  2114         AnnotationParser ap = new AnnotationParser(false, true) {

  2115             @Override

  2116             protected void visitAttr(String type, String attr, String at, String value) {

  2117                 if (type.equals(jvmType)) {

  2118                     found[0] = true;

  2119                     for (int i = 0; i < attrNames.length; i++) {

  2120                         if (attrNames[i].equals(attr)) {

  2121                             values[i] = value;

  2122                         }

  2123                     }

  2124                 }

  2125             }

  2127         };

  2128         ap.parse(arr, cd);

  2129         return found[0] ? values : null;

  2130     }

  2132     private CharSequence initField(FieldData v) {

  2133         final String is = v.getInternalSig();

  2134         if (is.length() == 1) {

  2135             switch (is.charAt(0)) {

  2136                 case 'S':

  2137                 case 'J':

  2138                 case 'B':

  2139                 case 'Z':

  2140                 case 'C':

  2141                 case 'I': return " = 0;";

  2142                 case 'F':

  2143                 case 'D': return " = 0.0;";

  2144                 default:

  2145                     throw new IllegalStateException(is);

  2146             }

  2147         }

  2148         return " = null;";

  2149     }

  2151     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2152         AnnotationParser ap = new AnnotationParser(true, false) {

  2153             int[] cnt = new int[32];

  2154             int depth;

  2156             @Override

  2157             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2158                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2159                 requireReference(slashType);

  2161                 if (cnt[depth]++ > 0) {

  2162                     append(",");

  2163                 }

  2164                 if (top) {

  2165                     append('"').append(attrType).append("\" : ");

  2166                 }

  2167                 append("{\n");

  2168                 cnt[++depth] = 0;

  2169             }

  2171             @Override

  2172             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2173                 append("\n}\n");

  2174                 depth--;

  2175             }

  2177             @Override

  2178             protected void visitValueStart(String attrName, char type) throws IOException {

  2179                 if (cnt[depth]++ > 0) {

  2180                     append(",\n");

  2181                 }

  2182                 cnt[++depth] = 0;

  2183                 if (attrName != null) {

  2184                     append('"').append(attrName).append("\" : ");

  2185                 }

  2186                 if (type == '[') {

  2187                     append("[");

  2188                 }

  2189             }

  2191             @Override

  2192             protected void visitValueEnd(String attrName, char type) throws IOException {

  2193                 if (type == '[') {

  2194                     append("]");

  2195                 }

  2196                 depth--;

  2197             }

  2199             @Override

  2200             protected void visitAttr(String type, String attr, String attrType, String value)

  2201             throws IOException {

  2202                 if (attr == null && value == null) {

  2203                     return;

  2204                 }

  2205                 append(value);

  2206             }

  2208             @Override

  2209             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2210             throws IOException {

  2211                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2212                 requireReference(slashType);

  2214                 final String cn = mangleClassName(slashType);

  2215                 append(accessClassFalse(cn))

  2216                    .append("['valueOf__L").

  2217                     append(cn).

  2218                     append("_2Ljava_lang_String_2']('").

  2219                     append(value).

  2220                     append("')");

  2221             }

  2222         };

  2223         ap.parse(data, cd);

  2224     }

  2226     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2227         final String name = args[indx];

  2228         if (name == null) {

  2229             return "";

  2230         }

  2231         if (name.contains(",")) {

  2232             throw new IOException("Wrong parameter with ',': " + name);

  2233         }

  2234         out.append(name);

  2235         return ",";

  2236     }

  2238     final void emitNoFlush(

  2239         StackMapper sm,

  2240         final String format, final CharSequence... params

  2241     ) throws IOException {

  2242         emitImpl(this, format, params);

  2243     }

  2244     static final void emit(

  2245         StackMapper sm,

  2246         final Appendable out,

  2247         final String format, final CharSequence... params

  2248     ) throws IOException {

  2249         sm.flush(out);

  2250         emitImpl(out, format, params);

  2251     }

  2252     static void emitImpl(final Appendable out,

  2253                              final String format,

  2254                              final CharSequence... params) throws IOException {

  2255         final int length = format.length();

  2257         int processed = 0;

  2258         int paramOffset = format.indexOf('@');

  2259         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2260             final char paramChar = format.charAt(paramOffset + 1);

  2261             if ((paramChar >= '1') && (paramChar <= '9')) {

  2262                 final int paramIndex = paramChar - '0' - 1;

  2264                 out.append(format, processed, paramOffset);

  2265                 out.append(params[paramIndex]);

  2267                 ++paramOffset;

  2268                 processed = paramOffset + 1;

  2269             }

  2271             paramOffset = format.indexOf('@', paramOffset + 1);

  2272         }

  2274         out.append(format, processed, length);

  2275     }

  2277     private void generateCatch(TrapData[] traps, Flow flow, int current, int topMostLabel) throws IOException {

  2278         append("} catch (e) {\n");

  2279         int finallyPC = -1;

  2280         for (TrapData e : traps) {

  2281             if (e == null) {

  2282                 break;

  2283             }

  2284             if (e.catch_cpx != 0) { //not finally

  2285                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2286                 addReference(classInternalName);

  2287                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2288                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2289                 append("var stA0 = e;");

  2290                 goTo(this, flow, current, e.handler_pc, topMostLabel);

  2291                 append("}\n");

  2292             } else {

  2293                 finallyPC = e.handler_pc;

  2294             }

  2295         }

  2296         if (finallyPC == -1) {

  2297             append("throw e;");

  2298         } else {

  2299             append("var stA0 = e;");

  2300             goTo(this, flow, current, finallyPC, topMostLabel);

  2301         }

  2302         append("\n}");

  2303     }

  2305     private static void goTo(Appendable out, Flow flow, int current, int to, int canBack) throws IOException {

  2306         if (flow != null) {

  2307             if (flow.isIf(current)) {

  2308                 out.append("{");

  2309                 return;

  2310             }

  2311             throw new IllegalStateException("Opn: ");

  2312         }

  2313         if (to < current) {

  2314             if (canBack < to) {

  2315                 out.append("{ gt = 0; continue X_" + to + "; }");

  2316             } else {

  2317                 out.append("{ gt = " + to + "; continue X_0; }");

  2318             }

  2319         } else {

  2320             out.append("{ gt = " + to + "; break IF; }");

  2321         }

  2322     }

  2324     private static void emitIf(

  2325         StackMapper sm, Flow flow, Appendable out, String pattern, CharSequence param, int current, int to, int canBack

  2326     ) throws IOException {

  2327         sm.flush(out);

  2328         emitImpl(out, pattern, param);

  2329         goTo(out, flow, current, to, canBack);

  2330     }

  2332     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2333         String jvmType;

  2334         switch (atype) {

  2335             case 4: jvmType = "[Z"; break;

  2336             case 5: jvmType = "[C"; break;

  2337             case 6: jvmType = "[F"; break;

  2338             case 7: jvmType = "[D"; break;

  2339             case 8: jvmType = "[B"; break;

  2340             case 9: jvmType = "[S"; break;

  2341             case 10: jvmType = "[I"; break;

  2342             case 11: jvmType = "[J"; break;

  2343             default: throw new IllegalStateException("Array type: " + atype);

  2344         }

  2345         emit(smapper, this,

  2346             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2347              smapper.popI(), smapper.pushA(), jvmType);

  2348     }

  2350     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2351         String typeName = jc.getClassName(type);

  2352         String ref = "null";

  2353         if (typeName.startsWith("[")) {

  2354             typeName = "'[" + typeName + "'";

  2355         } else {

  2356             ref = "vm." + mangleClassName(typeName);

  2357             typeName = "'[L" + typeName + ";'";

  2358         }

  2359         emit(smapper, this,

  2360             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2361              smapper.popI(), smapper.pushA(), typeName, ref);

  2362     }

  2364     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2365         String typeName = jc.getClassName(type);

  2366         int dim = readUByte(byteCodes, ++i);

  2367         StringBuilder dims = new StringBuilder();

  2368         dims.append('[');

  2369         for (int d = 0; d < dim; d++) {

  2370             if (d != 0) {

  2371                 dims.insert(1, ",");

  2372             }

  2373             dims.insert(1, smapper.popI());

  2374         }

  2375         dims.append(']');

  2376         String fn = "null";

  2377         if (typeName.charAt(dim) == 'L') {

  2378             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2379         }

  2380         emit(smapper, this,

  2381             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2382              dims.toString(), smapper.pushA(), typeName, fn

  2383         );

  2384         return i;

  2385     }

  2387     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, Flow flow, int topMostLabel) throws IOException {

  2388         int table = i / 4 * 4 + 4;

  2389         int dflt = i + readInt4(byteCodes, table);

  2390         table += 4;

  2391         int low = readInt4(byteCodes, table);

  2392         table += 4;

  2393         int high = readInt4(byteCodes, table);

  2394         table += 4;

  2395         final CharSequence swVar = smapper.popValue();

  2396         smapper.flush(this);

  2397         append("switch (").append(swVar).append(") {\n");

  2398         while (low <= high) {

  2399             int offset = i + readInt4(byteCodes, table);

  2400             table += 4;

  2401             append("  case " + low).append(":"); goTo(this, flow, i, offset, topMostLabel); append('\n');

  2402             low++;

  2403         }

  2404         append("  default: ");

  2405         goTo(this, flow, i, dflt, topMostLabel);

  2406         append("\n}");

  2407         i = table - 1;

  2408         return i;

  2409     }

  2411     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, Flow flow, int topMostLabel) throws IOException {

  2412         int table = i / 4 * 4 + 4;

  2413         int dflt = i + readInt4(byteCodes, table);

  2414         table += 4;

  2415         int n = readInt4(byteCodes, table);

  2416         table += 4;

  2417         final CharSequence swVar = smapper.popValue();

  2418         smapper.flush(this);

  2419         append("switch (").append(swVar).append(") {\n");

  2420         while (n-- > 0) {

  2421             int cnstnt = readInt4(byteCodes, table);

  2422             table += 4;

  2423             int offset = i + readInt4(byteCodes, table);

  2424             table += 4;

  2425             append("  case " + cnstnt).append(": "); goTo(this, flow, i, offset, topMostLabel); append('\n');

  2426         }

  2427         append("  default: ");

  2428         goTo(this, flow, i, dflt, topMostLabel);

  2429         append("\n}");

  2430         i = table - 1;

  2431         return i;

  2432     }

  2434     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2435         String type = jc.getClassName(indx);

  2436         if (!type.startsWith("[")) {

  2437             emit(smapper, this,

  2438                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2439                  smapper.popA(), smapper.pushI(),

  2440                  type.replace('/', '_'));

  2441         } else {

  2442             int cnt = 0;

  2443             while (type.charAt(cnt) == '[') {

  2444                 cnt++;

  2445             }

  2446             if (type.charAt(cnt) == 'L') {

  2447                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2448                 emit(smapper, this,

  2449                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2450                     smapper.popA(), smapper.pushI(),

  2451                     type, "" + cnt

  2452                 );

  2453             } else {

  2454                 emit(smapper, this,

  2455                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2456                     smapper.popA(), smapper.pushI(), type

  2457                 );

  2458             }

  2459         }

  2460     }

  2462     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2463         String type = jc.getClassName(indx);

  2464         if (!type.startsWith("[")) {

  2465             emitNoFlush(smapper,

  2466                  "if (@1 !== null && !@1['$instOf_@2']) vm.java_lang_Class(false).castEx();",

  2467                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2468         } else {

  2469             int cnt = 0;

  2470             while (type.charAt(cnt) == '[') {

  2471                 cnt++;

  2472             }

  2473             if (type.charAt(cnt) == 'L') {

  2474                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2475                 emitNoFlush(smapper,

  2476                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) vm.java_lang_Class(false).castEx();",

  2477                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2478                 );

  2479             } else {

  2480                 emitNoFlush(smapper,

  2481                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) vm.java_lang_Class(false).castEx();",

  2482                      smapper.getT(0, VarType.REFERENCE, false), type

  2483                 );

  2484             }

  2485         }

  2486     }

  2488     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2489         for (int j = prev; j <= i; j++) {

  2490             append(" ");

  2491             final int cc = readUByte(byteCodes, j);

  2492             append(Integer.toString(cc));

  2493         }

  2494     }

  2496     @JavaScriptBody(args = "msg", body = "")

  2497     private static void println(String msg) {

  2498         System.err.println(msg);

  2499     }

  2501     protected Flow checkFlow(MethodData byteCodes) {

  2502         return null;

  2503     }

  2504 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Fri, 13 Mar 2015 11:41:04 +0100
branch	flow
changeset 1816	6c1fa412c72d
parent 1814	ea9fd59c8b62
child 1842	dd4dabfead82
permissions	-rw-r--r--